Techniques are directed to using communication metric data associated with multiple modulation schemes to achieve a link quality metric that is representative of the link as a whole, across the multiple modulation schemes that may be employed on the link. A calculation of a link quality metric may be triggered by a network layer transmission attempt, with communication metrics accumulated at the link layer of the link. A filter used to calculate the link quality metric may be updated based on network layer transmission attempts, based on successful and/or unsuccessful transmissions at a Media Access Control (MAC) layer of the link. More generally, a calculation of link quality may be triggered by a higher layer transmission attempt while being calculated based on transmission attempts at a lower layer of the link.
An example pressure-sensing device includes a pipe or conduit having upstream and downstream connectors for respective upstream and downstream transducers to measure fluid (e.g., water) flow. The conduit may be made at least in part of a resiliently deformable material. A deformable electrode of a capacitor may be mounted in contact with a dry-side surface of an area of the resiliently deformable material. The wet-side surface of the area may define part of a pathway for a flow of the fluid. In operation, the area of the resiliently deformable material changes a location and/or a shape of the deformable electrode in response to changes in fluid pressure. A fixed electrode of the capacitor is separated by a dielectric material (e.g., air or an insulator) from the deformable electrode, and a circuit determines a pressure of the fluid based at least in part on a capacitance between the deformable electrode and the fixed electrode.
G01L 9/00 - Mesure de la pression permanente, ou quasi permanente d’un fluide ou d’un matériau solide fluent par des éléments électriques ou magnétiques sensibles à la pression; Transmission ou indication par des moyens électriques ou magnétiques du déplacement des éléments mécaniques sensibles à la pression, utilisés pour mesurer la pression permanente ou quasi permanente d’un fluide ou d’un matériau solide fluent
G01L 19/00 - MESURE DES FORCES, DES CONTRAINTES, DES COUPLES, DU TRAVAIL, DE LA PUISSANCE MÉCANIQUE, DU RENDEMENT MÉCANIQUE OU DE LA PRESSION DES FLUIDES - Détails ou accessoires des appareils pour la mesure de la pression permanente ou quasi permanente d'un milieu fluent dans la mesure où ces détails ou accessoires ne sont pas particuliers à des types particuliers de manomètres
G01F 1/00 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu
An example pressure-sensing device includes a pipe or conduit having upstream and downstream connectors for respective upstream and downstream transducers to measure fluid (e.g., water) flow. The conduit may be made at least in part of a resiliently deformable material. A deformable electrode of a capacitor may be mounted in contact with a dry-side surface of an area of the resiliently deformable material. The wet-side surface of the area may define part of a pathway for a flow of the fluid. In operation, the area of the resiliently deformable material changes a location and/or a shape of the deformable electrode in response to changes in fluid pressure. A fixed electrode of the capacitor is separated by a dielectric material (e.g., air or an insulator) from the deformable electrode, and a circuit determines a pressure of the fluid based at least in part on a capacitance between the deformable electrode and the fixed electrode.
G01F 1/86 - Débitmètres massiques indirects, p.ex. mesurant le débit volumétrique et la densité, la température ou la pression
G01M 3/26 - Examen de l'étanchéité des structures ou ouvrages vis-à-vis d'un fluide par utilisation d'un fluide ou en faisant le vide par mesure du taux de perte ou de gain d'un fluide, p.ex. avec des dispositifs réagissant à la pression, avec des indicateurs de débit
4.
DISCOVERY OF FORWARDERS TO MITIGATE ASYMMETRIC LINKS IN A MULTICAST GROUP
Techniques for establishing communications within a multicast group of nodes included in a mesh network include a method comprising: transmitting, by a node included in a mesh network using unicast, a first request to join a multicast group to a multicast group leader of the multicast group; and in response to determining that no message acknowledging the first request has been received from the multicast group leader, broadcasting, by the node, a second request to join the multicast group.
Cost effective pressure sensors for gas meters are described herein. In an example, responsive to an abnormal condition at an ultrasonic metrology unit of a gas meter, rates of pressure sensor operation are increased. In the example, the operations may include: measuring gas-environment pressure values; measuring contemporaneous air-environment pressure values; calculating pressure difference values of the gas-environment pressure values minus the contemporaneous air-environment pressure values; and comparing pressure difference values to one or more threshold values.
G01F 15/00 - MESURE DES VOLUMES, DES DÉBITS VOLUMÉTRIQUES, DES DÉBITS MASSIQUES OU DU NIVEAU DES LIQUIDES; COMPTAGE VOLUMÉTRIQUE - Détails des appareils des groupes ou accessoires pour ces derniers, dans la mesure où de tels accessoires ou détails ne sont pas adaptés à ces types particuliers d'appareils, p.ex. pour l'indication à distance
Cost effective pressure sensors for gas meters are described herein. In an example, responsive to an abnormal condition at an ultrasonic metrology unit of a gas meter, rates of pressure sensor operation are increased. In the example, the operations may include: measuring gas-environment pressure values; measuring contemporaneous air-environment pressure values; calculating pressure difference values of the gas-environment pressure values minus the contemporaneous air-environment pressure values; and comparing pressure difference values to one or more threshold values.
G01F 1/50 - Moyens de correction ou de compensation
G01F 1/20 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets mécaniques par détection des effets dynamiques de l’écoulement
Cost effective pressure sensors for gas meters are described herein. In an example, responsive to an abnormal condition at an ultrasonic metrology unit of a gas meter, rates of pressure sensor operation are increased. In the example, the operations may include: measuring gas-environment pressure values; measuring contemporaneous air-environment pressure values; calculating pressure difference values of the gas-environment pressure values minus the contemporaneous air-environment pressure values; and comparing pressure difference values to one or more threshold values.
G01F 15/00 - MESURE DES VOLUMES, DES DÉBITS VOLUMÉTRIQUES, DES DÉBITS MASSIQUES OU DU NIVEAU DES LIQUIDES; COMPTAGE VOLUMÉTRIQUE - Détails des appareils des groupes ou accessoires pour ces derniers, dans la mesure où de tels accessoires ou détails ne sont pas adaptés à ces types particuliers d'appareils, p.ex. pour l'indication à distance
8.
METROLOGY MODULE ADAPTABLE FOR USE IN MULTIPLE GAS METERS
A gas meter control system is adapted for use in gas meters having a plurality of different sizes (e.g., ability to measure different flowrates and/or different gas volumes per billing cycle) and different functional capabilities. In an example, the gas meter control system is configured to recognize and identify a metrology unit, sensor(s), switch(es), valve(s), valve motor(s), and/or other device(s) within a gas meter. Having identified devices present within a gas-environment and an air- environment of the meter, the control system selects and executes appropriate software to operate the identified devices. Addition of an additional component to the meter (e.g., an earthquake sensor or a tamper sensor) results in identification of the added component and execution of appropriate control software. Accordingly, the gas meter control system replaces a number of control systems configured to operate a single specific meter and/or configuration.
G01D 3/024 - Dispositions pour la mesure prévues pour les objets particuliers indiqués dans les sous-groupes du présent groupe avec dispositions pour changer ou corriger la fonction de transfert pour changer la plage de fonctionnement; Dispositions pour remplacer un organe sensible par un autre
A gas meter control system is adapted for use in gas meters having a plurality of different sizes (e.g., ability to measure different flowrates and/or different gas volumes per billing cycle) and different functional capabilities. In an example, the gas meter control system is configured to recognize and identify a metrology unit, sensor(s), switch(es), valve(s), valve motor(s), and/or other device(s) within a gas meter. Having identified devices present within a gas-environment and an air- environment of the meter, the control system selects and executes appropriate software to operate the identified devices. Addition of an additional component to the meter (e.g., an earthquake sensor or a tamper sensor) results in identification of the added component and execution of appropriate control software. Accordingly, the gas meter control system replaces a number of control systems configured to operate a single specific meter and/or configuration.
G01F 15/063 - Dispositifs d'indication ou d'enregistrement pour l'indication à distance utilisant des moyens électriques
G01D 3/024 - Dispositions pour la mesure prévues pour les objets particuliers indiqués dans les sous-groupes du présent groupe avec dispositions pour changer ou corriger la fonction de transfert pour changer la plage de fonctionnement; Dispositions pour remplacer un organe sensible par un autre
10.
Metrology module adaptable for use in multiple gas meters
A gas meter control system is adapted for use in gas meters having a plurality of different sizes (e.g., ability to measure different flowrates and/or different gas volumes per billing cycle) and different functional capabilities. In an example, the gas meter control system is configured to recognize and identify a metrology unit, sensor(s), switch(es), valve(s), valve motor(s), and/or other device(s) within a gas meter. Having identified devices present within a gas-environment and an air-environment of the meter, the control system selects and executes appropriate software to operate the identified devices. Addition of an additional component to the meter (e.g., an earthquake sensor or a tamper sensor) results in identification of the added component and execution of appropriate control software. Accordingly, the gas meter control system replaces a number of control systems configured to operate a single specific meter and/or configuration.
G01F 15/063 - Dispositifs d'indication ou d'enregistrement pour l'indication à distance utilisant des moyens électriques
G01F 15/00 - MESURE DES VOLUMES, DES DÉBITS VOLUMÉTRIQUES, DES DÉBITS MASSIQUES OU DU NIVEAU DES LIQUIDES; COMPTAGE VOLUMÉTRIQUE - Détails des appareils des groupes ou accessoires pour ces derniers, dans la mesure où de tels accessoires ou détails ne sont pas adaptés à ces types particuliers d'appareils, p.ex. pour l'indication à distance
G01F 15/18 - Supports ou moyens de raccordement pour les compteurs
G06F 13/38 - Transfert d'informations, p.ex. sur un bus
Techniques are provided for ad-hoc authenticated group discovery and data sharing in a mesh network. A group of devices is created without leaving a security gap due to the open communication needed to establish the discovery of the devices forming the group. The group can be authenticated autonomously following network discovery of the devices. Instead of requiring global pre-assigned keys for authentication, the devices in the group are authenticated with signatures and certificate passing thereby providing strong security. The efficiency of data sharing between the devices of the network, such as a mesh network, can also be increased. One or more devices may act as a bridge device between devices of a same group that are not in direct wireless communication with each other to reduce re-broadcasts within the mesh network.
Secure pairing of computing devices, such as a field tool and a battery- powered device (BPD), may include generating by the BPD a challenge message including a randomly- generated challenge, and receiving at the field tool a challenge message from the BPD via a Bluetooth low-energy (BLE) advertisement message. The challenge message can include a randomly-generated challenge and can be issued in a scannable undirected advertising message. The challenge key can be calculated via a secure hash algorithm (SHA) to obtain a response solution. The response solution can be sent by the field tool to the advertising device in response to the challenge message. The response solution can be verified by the BPD using a cryptographic message authentication code such as an HMAC, and the BPD sends a confirmation message to the field tool indicating that the response solution is verified as correct.
Techniques to provide a unified system for fluid pressure and fluid flowrate measurement are described. Upstream and downstream transducers include piezo devices, and are in contact with a fluid flow, such as in a pipe within a metering device. In an example, a first signal is sent from the upstream transducer to a downstream transducer, and time-of-flight of the first signal is measured. A second signal is sent from the downstream transducer to the upstream transducer, and a time-of- flight of the second signal is measured. A flowrate of the fluid flowing within the passage is calculated, based on the times of flight of the first and second signals. An electrical signal is sent to the first transducer. Upon conclusion of the electrical signal, a pressure of the fluid flowing within the passage is calculated, based at least in part on time of decay of a second electrical signal generated by vibration of the first transducer.
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p.ex. en utilisant des débitmètres à ultrasons
G01F 1/667 - Dispositions de transducteurs pour les débitmètres à ultrasons; Circuits pour faire fonctionner les débitmètres à ultrasons
G01L 9/00 - Mesure de la pression permanente, ou quasi permanente d’un fluide ou d’un matériau solide fluent par des éléments électriques ou magnétiques sensibles à la pression; Transmission ou indication par des moyens électriques ou magnétiques du déplacement des éléments mécaniques sensibles à la pression, utilisés pour mesurer la pression permanente ou quasi permanente d’un fluide ou d’un matériau solide fluent
G01L 9/08 - Mesure de la pression permanente, ou quasi permanente d’un fluide ou d’un matériau solide fluent par des éléments électriques ou magnétiques sensibles à la pression; Transmission ou indication par des moyens électriques ou magnétiques du déplacement des éléments mécaniques sensibles à la pression, utilisés pour mesurer la pression permanente ou quasi permanente d’un fluide ou d’un matériau solide fluent en faisant usage de dispositifs piézo-électriques
G01L 9/12 - Mesure de la pression permanente, ou quasi permanente d’un fluide ou d’un matériau solide fluent par des éléments électriques ou magnétiques sensibles à la pression; Transmission ou indication par des moyens électriques ou magnétiques du déplacement des éléments mécaniques sensibles à la pression, utilisés pour mesurer la pression permanente ou quasi permanente d’un fluide ou d’un matériau solide fluent en faisant usage des variations de la capacité
14.
UNIFIED SYSTEM FOR PRESSURE AND FLOWRATE MEASUREMENT
Techniques to provide a unified system for fluid pressure and fluid flowrate measurement are described. Upstream and downstream transducers include piezo devices, and are in contact with a fluid flow, such as in a pipe within a metering device. In an example, a first signal is sent from the upstream transducer to a downstream transducer, and time-of-flight of the first signal is measured. A second signal is sent from the downstream transducer to the upstream transducer, and a time-of- flight of the second signal is measured. A flowrate of the fluid flowing within the passage is calculated, based on the times of flight of the first and second signals. An electrical signal is sent to the first transducer. Upon conclusion of the electrical signal, a pressure of the fluid flowing within the passage is calculated, based at least in part on time of decay of a second electrical signal generated by vibration of the first transducer.
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p.ex. en utilisant des débitmètres à ultrasons
G01L 9/00 - Mesure de la pression permanente, ou quasi permanente d’un fluide ou d’un matériau solide fluent par des éléments électriques ou magnétiques sensibles à la pression; Transmission ou indication par des moyens électriques ou magnétiques du déplacement des éléments mécaniques sensibles à la pression, utilisés pour mesurer la pression permanente ou quasi permanente d’un fluide ou d’un matériau solide fluent
G01L 9/08 - Mesure de la pression permanente, ou quasi permanente d’un fluide ou d’un matériau solide fluent par des éléments électriques ou magnétiques sensibles à la pression; Transmission ou indication par des moyens électriques ou magnétiques du déplacement des éléments mécaniques sensibles à la pression, utilisés pour mesurer la pression permanente ou quasi permanente d’un fluide ou d’un matériau solide fluent en faisant usage de dispositifs piézo-électriques
G01L 9/12 - Mesure de la pression permanente, ou quasi permanente d’un fluide ou d’un matériau solide fluent par des éléments électriques ou magnétiques sensibles à la pression; Transmission ou indication par des moyens électriques ou magnétiques du déplacement des éléments mécaniques sensibles à la pression, utilisés pour mesurer la pression permanente ou quasi permanente d’un fluide ou d’un matériau solide fluent en faisant usage des variations de la capacité
G01F 1/667 - Dispositions de transducteurs pour les débitmètres à ultrasons; Circuits pour faire fonctionner les débitmètres à ultrasons
15.
DISCOVERY OF FORWARDERS TO MITIGATE ASYMMETRIC LINKS IN A MULTICAST GROUP
One embodiment of the present invention sets forth a technique for establishing communications within a multicast group of nodes included in a mesh network. The technique includes detecting that a first message related to the member node joining the multicast group has not been received from a multicast group leader included in the multicast group. The technique also includes in response, generating a first broadcast message for the member node that includes a multicast join request. The technique further includes forwarding the first broadcast message to one or more nodes included in the mesh network that are direct neighbors of the member node, wherein at least one node included in the one or more nodes further forwards the first broadcast message based on a first maximum hop limit.
H04L 12/18 - Dispositions pour la fourniture de services particuliers aux abonnés pour la diffusion ou les conférences
H04W 40/28 - Gestion d'informations sur la connectabilité, p.ex. exploration de connectabilité ou mise à jour de connectabilité pour acheminement réactif
One embodiment of the present invention sets forth a technique for establishing communications within a multicast group of nodes included in a mesh network. The technique includes detecting that a first message related to the member node joining the multicast group has not been received from a multicast group leader included in the multicast group. The technique also includes in response, generating a first broadcast message for the member node that includes a multicast join request. The technique further includes forwarding the first broadcast message to one or more nodes included in the mesh network that are direct neighbors of the member node, wherein at least one node included in the one or more nodes further forwards the first broadcast message based on a first maximum hop limit.
H04W 40/28 - Gestion d'informations sur la connectabilité, p.ex. exploration de connectabilité ou mise à jour de connectabilité pour acheminement réactif
17.
UNICAST DISCOVERY OF FORWARDERS IN A MULTICAST GROUP
One embodiment of the present invention sets forth a technique for establishing communications within a multicast group of nodes included in a mesh network. The technique includes receiving a first unicast message that includes a multicast join request from a member node included in the multicast group, wherein the multicast join request specifies a first shortest path from the member node to a multicast group leader also included in the multicast group. The technique also includes forwarding the first unicast message to the multicast group leader along the first shortest path, and forwarding a second unicast message from the multicast group leader to the member node along a second shortest path, wherein the second unicast message includes a multicast join acknowledgment. The technique further includes declaring a first node as a multicast forwarder in the multicast group, wherein the first node is responsible for forwarding the second unicast message.
One embodiment of the present invention sets forth a technique for establishing communications within a multicast group of nodes included in a mesh network. The technique includes detecting that a first message related to the member node joining the multicast group has not been received from a multicast group leader included in the multicast group. The technique also includes in response, generating a first broadcast message for the member node that includes a multicast join request. The technique further includes forwarding the first broadcast message to one or more nodes included in the mesh network that are direct neighbors of the member node, wherein at least one node included in the one or more nodes further forwards the first broadcast message based on a first maximum hop limit.
Techniques are disclosed for promoting more desirable fluid flow within a section of pipe between upstream and downstream transducers in a fluid meter (e.g., a water or gas meter). To create better fluid flow characteristics, an insert may be installed within the section of pipe. The insert may be configured with an upper portion and a lower portion that are connected in the manufacturing process. The insert may include mirror supports configured to result in low pressure drop and stable flow conditions. The mirror supports (upstream and downstream) reflect the ultrasonic signals sent between the upstream and downstream piezo transducers. A fluid stabilizer may be connected to one of the upper portion or the lower portion of the insert. The fluid stabilizer may include a conical central portion and four blades to smooth fluid flow between the transducers and associated mirrors.
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p.ex. en utilisant des débitmètres à ultrasons
Techniques are disclosed for promoting more desirable fluid flow within a section of pipe between upstream and downstream transducers in a fluid meter (e.g., a water or gas meter). To create better fluid flow characteristics, an insert may be installed within the section of pipe. The insert may be configured with an upper portion and a lower portion that are connected in the manufacturing process. The insert may include mirror supports configured to result in low pressure drop and stable flow conditions. The mirror supports (upstream and downstream) reflect the ultrasonic signals sent between the upstream and downstream piezo transducers. A fluid stabilizer may be connected to one of the upper portion or the lower portion of the insert. The fluid stabilizer may include a conical central portion and four blades to smooth fluid flow between the transducers and associated mirrors.
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p.ex. en utilisant des débitmètres à ultrasons
21.
Insert forming an ultrasonic channel for a fluid meter and including reflector mirrors and a flow stabilizer
Techniques are disclosed for promoting more desirable fluid flow within a section of pipe between upstream and downstream transducers in a fluid meter (e.g., a water or gas meter). To create better fluid flow characteristics, an insert may be installed within the section of pipe. The insert may be configured with an upper portion and a lower portion that are connected in the manufacturing process. The insert may include mirror supports configured to result in low pressure drop and stable flow conditions. The mirror supports (upstream and downstream) reflect the ultrasonic signals sent between the upstream and downstream piezo transducers. A fluid stabilizer may be connected to one of the upper portion or the lower portion of the insert. The fluid stabilizer may include a conical central portion and four blades to smooth fluid flow between the transducers and associated mirrors.
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p.ex. en utilisant des débitmètres à ultrasons
G01F 1/663 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p.ex. en utilisant des débitmètres à ultrasons en mesurant le décalage de fréquence Doppler
G01F 1/667 - Dispositions de transducteurs pour les débitmètres à ultrasons; Circuits pour faire fonctionner les débitmètres à ultrasons
22.
Reliable link quality estimation in multi-rate networks
Techniques are directed to using communication metric data associated with multiple modulation schemes to achieve a link quality metric that is representative of the link as a whole, across the multiple modulation schemes that may be employed on the link. A calculation of a link quality metric may be triggered by a network layer transmission attempt, with communication metrics accumulated at the link layer of the link. A filter used to calculate the link quality metric may be updated based on network layer transmission attempts, based on successful and/or unsuccessful transmissions at a Media Access Control (MAC) layer of the link. More generally, a calculation of link quality may be triggered by a higher layer transmission attempt while being calculated based on transmission attempts at a lower layer of the link.
H04W 24/00 - Dispositions de supervision, de contrôle ou de test
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04B 17/309 - Mesure ou estimation des paramètres de qualité d’un canal
H04W 80/02 - Protocoles de couche liaison de données
H04L 43/08 - Surveillance ou test en fonction de métriques spécifiques, p.ex. la qualité du service [QoS], la consommation d’énergie ou les paramètres environnementaux
Techniques configure a network to relay data from a node to a root device are described herein. In an example, one-hop neighbors of the node are determined and ranked according to link quality. The ranked neighbor nodes may be considered potential “parent nodes” of the node. The ranked nodes may be divided into a plurality of groups according to link quality. A parent node may be selected from among the “best” group of one-hop neighbor nodes and may be used to relay data for the node to and/or from the router or other device. The node continues to use the parent node at least until its ranking removes it from the best group or falls below a threshold value. After the ranking of the parent falls below such a prescribed threshold it may be replaced by selection of a replacement parent from the group of one-hop upstream neighbors having the best link quality.
An enclosure for an ultrasonic transducer is configured for variable moisture protection. During storage and transport, the enclosure may be kept in a sealed state, which prevents entry of humidity. During operation in a wet environment (e.g., in a water meter attached to a pipe) water leaks into the enclosure very slowly, even when sealed. Accordingly, a tube is opened, allowing water molecules to be exhausted from the enclosure and absorbed by a desiccant within the water meter. In an example, a tube passes from an interior of the enclosure to an exterior of the enclosure. An end cap on the tube prevents humid air from entering the enclosure during storage and transport of the ultrasonic transducer. During operation in a humid environment, removal of the end cap allows air exchange to ventilate the enclosure and allows a desiccant outside the enclosure to absorb humidity exhausted from the enclosure.
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p.ex. en utilisant des débitmètres à ultrasons
G01F 15/14 - Revêtements, p.ex. avec un matériau spécial
H04R 1/02 - Boîtiers; Meubles; Montages à l'intérieur de ceux-ci
G01N 29/22 - Recherche ou analyse des matériaux par l'emploi d'ondes ultrasonores, sonores ou infrasonores; Visualisation de l'intérieur d'objets par transmission d'ondes ultrasonores ou sonores à travers l'objet - Détails
Methods and devices for providing routing path and transit delay time data to a device running traceroute on an IP network comprising routing tunnels are described herein. In examples, a tunnel entrance device may copy a hop limit value associated with a traceroute probe into a hop limit field of a tunneled IP header. In other examples, the tunnel entrance device may perform address spoofing to generate an error message with a source address corresponding to an intermediate device disposed within a routing tunnel. In this way, a device executing traceroute may be able to receive network addresses corresponding to intermediate devices in a routing tunnel in order to perform network diagnostics, construct routing tables, determine more efficient routing paths, and so on.
H04L 69/16 - Implémentation ou adaptation du protocole Internet [IP], du protocole de contrôle de transmission [TCP] ou du protocole datagramme utilisateur [UDP]
H04L 69/18 - Gestionnaires multi-protocoles, p.ex. dispositifs uniques capables de gérer plusieurs protocoles
H04L 69/22 - Analyse syntaxique ou évaluation d’en-têtes
26.
Reliable link quality estimation in multi-rate networks
Techniques are directed to using communication metric data associated with multiple modulation schemes to achieve a link quality metric that is representative of the link as a whole, across the multiple modulation schemes that may be employed on the link. A calculation of a link quality metric may be triggered by a network layer transmission attempt, with communication metrics accumulated at the link layer of the link. A filter used to calculate the link quality metric may be updated based on network layer transmission attempts, based on successful and/or unsuccessful transmissions at a Media Access Control (MAC) layer of the link. More generally, a calculation of link quality may be triggered by a higher layer transmission attempt while being calculated based on transmission attempts at a lower layer of the link.
Techniques are directed to determining, based at least in part on link quality metric data associated with communication over a link between the first node and a second node, to send an information message to the second node preceded by sending a corresponding polling message to the second node or to send the information message to the second node not preceded by sending the corresponding polling message to the second node. Based at least in part on the determining, a node may send the information message to the second node preceded by sending the corresponding polling message to the second node or sending the information message to the second node not preceded by sending the corresponding polling message to the second node. Overhead associated with polling messages may be reduced.
H04L 47/28 - Commande de flux; Commande de la congestion par rapport à des considérations temporelles
H04L 51/00 - Messagerie d'utilisateur à utilisateur dans des réseaux à commutation de paquets, transmise selon des protocoles de stockage et de retransmission ou en temps réel, p.ex. courriel
Techniques are directed to determining, based at least in part on link quality metric data associated with communication over a link between the first node and a second node, to send an information message to the second node preceded by sending a corresponding polling message to the second node or to send the information message to the second node not preceded by sending the corresponding polling message to the second node. Based at least in part on the determining, a node may send the information message to the second node preceded by sending the corresponding polling message to the second node or sending the information message to the second node not preceded by sending the corresponding polling message to the second node. Overhead associated with polling messages may be reduced.
A first node operates in a network. The first node sends a polling message to a second node over a link at a first data rate, receiving an acknowledgement message from the second node. Based at least in part on receiving the acknowledgement message, the first node determines the second node is available to receive an information message. Based at least in part on the determining the second node is available to receive the information message, the first node sends the information message to the second node over the link at a second data rate. The second data rate is based at least on an indication of observed behavior of the link and the first data rate is based at least on the second data rate. For example, the first node may determine the first data rate to be a next slowest available data rate than the second data rate.
A first node operates in a network. The first node sends a polling message to a second node over a link at a first data rate, receiving an acknowledgement message from the second node. Based at least in part on receiving the acknowledgement message, the first node determines the second node is available to receive an information message. Based at least in part on the determining the second node is available to receive the information message, the first node sends the information message to the second node over the link at a second data rate. The second data rate is based at least on an indication of observed behavior of the link and the first data rate is based at least on the second data rate. For example, the first node may determine the first data rate to be a next slowest available data rate than the second data rate.
H04L 1/16 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue en utilisant un canal de retour dans lesquelles le canal de retour transporte des signaux de contrôle, p.ex. répétition de signaux de demande
H04W 40/12 - Sélection d'itinéraire ou de voie de communication, p.ex. routage basé sur l'énergie disponible ou le chemin le plus court sur la base de la qualité d'émission ou de la qualité des canaux
H04W 74/06 - Accès planifié utilisant une invitation à émettre
H04W 84/18 - Réseaux auto-organisés, p.ex. réseaux ad hoc ou réseaux de détection
H04L 1/18 - Systèmes de répétition automatique, p.ex. systèmes Van Duuren
31.
Optimized objective function for routing determination
Techniques are directed to determining a rank value associated with a first network node. An example method includes determining a second network node indicated as being a preferred parent network node for the first network node. A first rank value is processed to determine a second rank value, the first rank value corresponding to a path from the second network node to a destination network node, including rounding up the first rank value in a predetermined manner to at least a second next higher integral rank value than the first rank value, to determine the second rank value. The second rank value is processed with at least a third rank value to determine the rank value associated with the first network node, the third rank value associated with a path from one of a plurality of candidate parent network nodes, for the first network node, to the destination network node.
Techniques are directed to determining a rank value associated with a first network node. An example method includes determining a second network node indicated as being a preferred parent network node for the first network node. A first rank value is processed to determine a second rank value, the first rank value corresponding to a path from the second network node to a destination network node, including rounding up the first rank value in a predetermined manner to at least a second next higher integral rank value than the first rank value, to determine the second rank value. The second rank value is processed with at least a third rank value to determine the rank value associated with the first network node, the third rank value associated with a path from one of a plurality of candidate parent network nodes, for the first network node, to the destination network node.
Techniques configure a network to relay data from a node to a root device are described herein. In an example, one-hop neighbors of the node are determined and ranked according to link quality. The ranked neighbor nodes may be considered potential “parent nodes” of the node. The ranked nodes may be divided into a plurality of groups according to link quality. A parent node may be selected from among the “best” group of one-hop neighbor nodes and may be used to relay data for the node to and/or from the router or other device. The node continues to use the parent node at least until its ranking removes it from the best group or falls below a threshold value. After the ranking of the parent falls below such a prescribed threshold it may be replaced by selection of a replacement parent from the group of one-hop upstream neighbors having the best link quality.
H04L 12/753 - Découverte de l’arborescence de routage, p.ex. conversion de la topologie maillée de réseau en topologie arborescente
H04L 12/751 - Mise à jour ou découverte de la topologie
H04L 12/26 - Dispositions de surveillance; Dispositions de test
H04L 12/721 - Procédures de routage, p.ex. routage par le chemin le plus court, routage par la source, routage à état de lien ou routage par vecteur de distance
H04L 12/707 - Prévention ou récupération du défaut de routage, p.ex. reroutage, redondance de route "virtual router redundancy protocol" [VRRP] ou "hot standby router protocol" [HSRP] par redondance des chemins d’accès
Techniques for operating a static fluid meter are described herein. In an example, a sampling interval is identified. The sampling interval is a period of time within which an electromagnetic or acoustic device measures or samples a rate of the fluid flow. The sampling interval may be approximately 1 second long; however, the interval may be longer or shorter depending on the design requirements of a particular system. A random number is generated and/or received. A sampling time within the sampling interval may be determined based at least in part on the random number. By sampling at a different and randomly determined location within each of a series of sampling intervals a more accurate fluid measurement may be obtained.
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p.ex. en utilisant des débitmètres à ultrasons
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
G01F 15/00 - MESURE DES VOLUMES, DES DÉBITS VOLUMÉTRIQUES, DES DÉBITS MASSIQUES OU DU NIVEAU DES LIQUIDES; COMPTAGE VOLUMÉTRIQUE - Détails des appareils des groupes ou accessoires pour ces derniers, dans la mesure où de tels accessoires ou détails ne sont pas adaptés à ces types particuliers d'appareils, p.ex. pour l'indication à distance
A gas meter having a sensor module and at least one bypass module is described herein. In an example of the gas meter, an enclosure defines an interior cavity within which a manifold may be configured to include a sensor module connector, at least one bypass module connector, and an exhaust port. A sensor module may be connected to the sensor module connector of the manifold and may measure a flowrate through the sensor module and into the manifold. A bypass module may be connected to the bypass module connector of the manifold to bypass gas around the sensor module. A processor may be used to compute a gas flowrate through the meter using inputs including the measured flowrate and data based on the measured flowrate to adjust for gas that bypassed the sensor module.
A gas meter having a sensor module and at least one bypass module is described herein. In an example of the gas meter, an enclosure defines an interior cavity within which a manifold may be configured to include a sensor module connector, at least one bypass module connector, and an exhaust port. A sensor module may be connected to the sensor module connector of the manifold and may measure a flowrate through the sensor module and into the manifold. A bypass module may be connected to the bypass module connector of the manifold to bypass gas around the sensor module. A processor may be used to compute a gas flowrate through the meter using inputs including the measured flowrate and data based on the measured flowrate to adjust for gas that bypassed the sensor module.
A gas meter having a sensor module and at least one bypass module is described herein. In an example of the gas meter, an enclosure defines an interior cavity within which a manifold may be configured to include a sensor module connector, at least one bypass module connector, and an exhaust port. A sensor module may be connected to the sensor module connector of the manifold and may measure a flowrate through the sensor module and into the manifold. A bypass module may be connected to the bypass module connector of the manifold to bypass gas around the sensor module. A processor may be used to compute a gas flowrate through the meter using inputs including the measured flowrate and data based on the measured flowrate to adjust for gas that bypassed the sensor module.
Networked utility services handle data-flow in a system to operate electrical vehicle charging stations. In an example, first and second utility companies may operate in first and second respective areas. A user may have a residence in the first area and may have an electric vehicle at a vehicle charging station in the second area. The user may provide identification at the vehicle charging station in the second area, and the user's vehicle may be charged at that location using electricity from the second utility. Data including the user's identification and the electricity consumed in the charging may be sent to the first utility serving the area including the user's residence. The first utility may bill the user for the electricity used to charge the user's vehicle at the remote vehicle charging station. The charging station, both utilities and/or other parties may share in the receipts.
B60L 53/66 - Transfert de données entre les stations de charge et le véhicule
G06Q 20/20 - Systèmes de réseaux présents sur les points de vente
G06Q 20/40 - Autorisation, p.ex. identification du payeur ou du bénéficiaire, vérification des références du client ou du magasin; Examen et approbation des payeurs, p.ex. contrôle des lignes de crédit ou des listes négatives
39.
Packet servicing for enhanced capability in time-slotted systems
Disclosed are techniques to provide data at listening event offsets, using a buffering scheme having a common buffer. Received data, to be transmitted at the listening event offsets, is stored into the common buffer without classification to listening event offsets. Data to be transmitted at an upcoming listening event offset is identified in the common buffer prior to the listening event offset. Example techniques provide for simpler reconfigurability of listening events offsets, as well as transmitting data at each listening event offset that is responsive to a state of the system prior to the listening event offset.
H04Q 9/00 - Dispositions dans les systèmes de commande à distance ou de télémétrie pour appeler sélectivement une sous-station à partir d'une station principale, sous-station dans laquelle un appareil recherché est choisi pour appliquer un signal de commande ou
H04L 12/863 - Ordonnancement de file d’attente, p.ex. ordonnancement circulaire
H04L 12/861 - Mise en mémoire tampon de paquets ou mise en file d’attente; Ordonnancement de file d’attente
H04W 84/18 - Réseaux auto-organisés, p.ex. réseaux ad hoc ou réseaux de détection
H04W 80/02 - Protocoles de couche liaison de données
Techniques are directed to opportunistically communicating using a modulation scheme that is other than the preferred modulation scheme, to update communication metric data for the second modulation scheme, such as a modulation scheme that has not been used as much as the first modulation scheme. The second modulation scheme may be associated with a higher data rate than the preferred modulation scheme. If communication using the second modulation scheme is successful, subsequent communication may be carried out exclusively using the second modulation scheme, and the communication metrics may develop such that the second modulation scheme becomes the preferred modulation scheme.
Techniques are directed to using communication metric data associated with multiple modulation schemes to achieve a link quality metric that is representative of the link as a whole, across the multiple modulation schemes that may be employed on the link. A calculation of a link quality metric may be triggered by a network layer transmission attempt, with communication metrics accumulated at the link layer of the link. A filter used to calculate the link quality metric may be updated based on network layer transmission attempts, based on successful and/or unsuccessful transmissions at a Media Access Control (MAC) layer of the link. More generally, a calculation of link quality may be triggered by a higher layer transmission attempt while being calculated based on transmission attempts at a lower layer of the link.
H04L 12/28 - Réseaux de données à commutation caractérisés par la configuration des liaisons, p.ex. réseaux locaux [LAN Local Area Networks] ou réseaux étendus [WAN Wide Area Networks]
H04L 12/16 - Dispositions pour la fourniture de services particuliers aux abonnés
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04B 17/309 - Mesure ou estimation des paramètres de qualité d’un canal
H04W 80/02 - Protocoles de couche liaison de données
H04L 43/08 - Surveillance ou test en fonction de métriques spécifiques, p.ex. la qualité du service [QoS], la consommation d’énergie ou les paramètres environnementaux
42.
Reliable link quality estimation in multi-rate networks
Techniques are directed to using communication metric data associated with multiple modulation schemes to achieve a link quality metric that is representative of the link as a whole, across the multiple modulation schemes that may be employed on the link. A calculation of a link quality metric may be triggered by a network layer transmission attempt, with communication metrics accumulated at the link layer of the link. A filter used to calculate the link quality metric may be updated based on network layer transmission attempts, based on successful and/or unsuccessful transmissions at a Media Access Control (MAC) layer of the link. More generally, a calculation of link quality may be triggered by a higher layer transmission attempt while being calculated based on transmission attempts at a lower layer of the link.
Techniques are directed to opportunistically communicating using a modulation scheme that is other than the preferred modulation scheme, to update communication metric data for the second modulation scheme, such as a modulation scheme that has not been used as much as the first modulation scheme. The second modulation scheme may be associated with a higher data rate than the preferred modulation scheme. If communication using the second modulation scheme is successful, subsequent communication may be carried out exclusively using the second modulation scheme, and the communication metrics may develop such that the second modulation scheme becomes the preferred modulation scheme.
Techniques are directed to using communication metric data associated with multiple modulation schemes to achieve a link quality metric that is representative of the link as a whole, across the multiple modulation schemes that may be employed on the link. A calculation of a link quality metric may be triggered by a network layer transmission attempt, with communication metrics accumulated at the link layer of the link. A filter used to calculate the link quality metric may be updated based on network layer transmission attempts, based on successful and/or unsuccessful transmissions at a Media Access Control (MAC) layer of the link. More generally, a calculation of link quality may be triggered by a higher layer transmission attempt while being calculated based on transmission attempts at a lower layer of the link.
Techniques are directed to using communication metric data associated with multiple modulation schemes to achieve a link quality metric that is representative of the link as a whole, across the multiple modulation schemes that may be employed on the link. A calculation of a link quality metric may be triggered by a network layer transmission attempt, with communication metrics accumulated at the link layer of the link. A filter used to calculate the link quality metric may be updated based on network layer transmission attempts, based on successful and/or unsuccessful transmissions at a Media Access Control (MAC) layer of the link. More generally, a calculation of link quality may be triggered by a higher layer transmission attempt while being calculated based on transmission attempts at a lower layer of the link.
H04L 43/08 - Surveillance ou test en fonction de métriques spécifiques, p.ex. la qualité du service [QoS], la consommation d’énergie ou les paramètres environnementaux
H04B 17/309 - Mesure ou estimation des paramètres de qualité d’un canal
H04L 69/321 - Protocoles de communication inter-couches ou définitions d'unité de données de service [SDU]; Interfaces entre les couches
A method for sending communications with dynamic data correction to at least one receiving device includes dividing a message into one or more message blocks and determining corresponding redundancy blocks for the one or more message blocks, the redundancy blocks to be used by at least one of the receiving devices for message block detection or message block correction. The method further includes constructing a data packet including a header and a data payload including the one or more message blocks and the corresponding redundancy blocks. The construction of the data packet is such that it is processable by receiving devices that are configured to recognize and process the corresponding redundancy blocks and also processable by other receiving devices that cannot recognize the presence of the corresponding redundancy blocks. The method further includes sending the constructed data packet to the at least one receiving device.
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H03M 13/05 - Détection d'erreurs ou correction d'erreurs transmises par redondance dans la représentation des données, c.à d. mots de code contenant plus de chiffres que les mots source utilisant un codage par blocs, c.à d. un nombre prédéterminé de bits de contrôle ajouté à un nombre prédéterminé de bits d'information
H03M 13/29 - Codage, décodage ou conversion de code pour détecter ou corriger des erreurs; Hypothèses de base sur la théorie du codage; Limites de codage; Méthodes d'évaluation de la probabilité d'erreur; Modèles de canaux; Simulation ou test des codes combinant plusieurs codes ou structures de codes, p.ex. codes de produits, codes de produits généralisés, codes concaténés, codes interne et externe
47.
Transducer enclosure to protect and position transducer wiring
A plug is adapted for connection to an ultrasonic transducer to protect and guide wiring during storage, transportation, and the manufacturing process. The plug protects and orients wires to allow for automated manufacturing and to provide an improved connection between the transducer and an electronic printed circuit board. The plug may include a first portion having wire guide(s) and a second portion configured for attachment to the transducer. The plug includes at least one wire guide to protect wire(s) that connect the ultrasonic transducer to a printed circuit board. A wire extends through a passage defined in each wire guide on a first portion of the plug. The first portion slides with respect to the second portion to expose portions of first and second wires carried within the first and second channels, respectively. Once exposed, the wires can be soldered to a PCB in an automated manner.
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p.ex. en utilisant des débitmètres à ultrasons
G01F 15/14 - Revêtements, p.ex. avec un matériau spécial
H04R 1/02 - Boîtiers; Meubles; Montages à l'intérieur de ceux-ci
G01N 29/22 - Recherche ou analyse des matériaux par l'emploi d'ondes ultrasonores, sonores ou infrasonores; Visualisation de l'intérieur d'objets par transmission d'ondes ultrasonores ou sonores à travers l'objet - Détails
An enclosure for an ultrasonic transducer is configured for variable moisture protection. During storage and transport, the enclosure may be kept in a sealed state, which prevents entry of humidity. During operation in a wet environment (e.g., in a water meter attached to a pipe) water leaks into the enclosure very slowly, even when sealed. Accordingly, a tube is opened, allowing water molecules to be exhausted from the enclosure and absorbed by a desiccant within the water meter. In an example, a tube passes from an interior of the enclosure to an exterior of the enclosure. An end cap on the tube prevents humid air from entering the enclosure during storage and transport of the ultrasonic transducer. During operation in a humid environment, removal of the end cap allows air exchange to ventilate the enclosure and allows a desiccant outside the enclosure to absorb humidity exhausted from the enclosure.
G01F 1/00 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p.ex. en utilisant des débitmètres à ultrasons
G01F 15/14 - Revêtements, p.ex. avec un matériau spécial
H04R 1/02 - Boîtiers; Meubles; Montages à l'intérieur de ceux-ci
G01N 29/22 - Recherche ou analyse des matériaux par l'emploi d'ondes ultrasonores, sonores ou infrasonores; Visualisation de l'intérieur d'objets par transmission d'ondes ultrasonores ou sonores à travers l'objet - Détails
Techniques are disclosed for configuring a bi-material enclosure for an acoustic sensor assembly, such as for use in a water or gas metering applications, or other applications using piezo and/or transducer devices. A plastic housing with mechanical reinforcements (e.g., 40% glass fiber) provides the advantage of strength and resistance to a high-pressure environment encountered during use. Use of a plastic sleeve having less or no reinforcements provides more consistent signal reception and data generation between different transducer assemblies under the same or similar conditions. Accordingly, the bi-material transducer enclosure provides a high resistance to pressure and/or high reproducibility of signal-transmission characteristics between transducer assemblies.
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p.ex. en utilisant des débitmètres à ultrasons
G01F 15/14 - Revêtements, p.ex. avec un matériau spécial
H04R 1/02 - Boîtiers; Meubles; Montages à l'intérieur de ceux-ci
G01N 29/22 - Recherche ou analyse des matériaux par l'emploi d'ondes ultrasonores, sonores ou infrasonores; Visualisation de l'intérieur d'objets par transmission d'ondes ultrasonores ou sonores à travers l'objet - Détails
Techniques for computing electrical phase of electrical metering devices are described. In an example, data indicating zero-crossing times at first and second metering devices is obtained. A time-difference between the zero-crossing times may be determined. In a first example, the time-difference may be based at least in part on calculations involving a first value of a first free-run timer on a first metering device, a second value of a second free-run timer on a second metering device, and a time of a transmission between the metering devices. In a second example, the time-difference may be based at least in part on calculations involving a start or end time of a time-slot of a spread spectrum radio frequency transmission scheme. A phase difference between the first zero-crossing and the second zero-crossing may be determined, based at least in part on the determined time-difference.
H04L 7/033 - Commande de vitesse ou de phase au moyen des signaux de code reçus, les signaux ne contenant aucune information de synchronisation particulière en utilisant les transitions du signal reçu pour commander la phase de moyens générateurs du signal de synchronisation, p.ex. en utilisant une boucle verrouillée en phase
H04W 4/38 - Services spécialement adaptés à des environnements, à des situations ou à des fins spécifiques pour la collecte d’informations de capteurs
H04Q 9/00 - Dispositions dans les systèmes de commande à distance ou de télémétrie pour appeler sélectivement une sous-station à partir d'une station principale, sous-station dans laquelle un appareil recherché est choisi pour appliquer un signal de commande ou
H04L 7/00 - Dispositions pour synchroniser le récepteur avec l'émetteur
51.
Precise time synchronization for communication devices in networks
Techniques for employing precise transmission capabilities of a physical (PHY) layer to transmit time-synchronization beacons at an edge-of-field-resolution increment of a field of MAC layer frame. In some examples, the PHY layer may transmit beacons with a greater precision than permitted by lower-resolution MAC layer header fields. The communication protocol may specify the size of the field that is populated with timing information at a first precision. However, the PHY layer may be capable of transmitting with a second precision that is greater than the first precision. Thus, to virtually increase the time-synchronization resolution of the beacons, the beacons may be transmitted by the PHY layer at an edge-of-field resolution of the MAC layer header field. In this way, the first precision of the timing information in the MAC layer header field is virtually increased to the second precision of the PHY layer.
Techniques are directed to opportunistically communicating using a modulation scheme that is other than the preferred modulation scheme, to update communication metric data for the second modulation scheme, such as a modulation scheme that has not been used as much as the first modulation scheme. The second modulation scheme may be associated with a higher data rate than the preferred modulation scheme. If communication using the second modulation scheme is successful, subsequent communication may be carried out exclusively using the second modulation scheme, and the communication metrics may develop such that the second modulation scheme becomes the preferred modulation scheme.
A decontamination device removes particles from a gas flow and is usable in a gas metering device. The decontamination device may include an upper portion defining a plurality of openings and a lower portion attached to the upper portion. In an example, the lower portion includes a first curved ramp to redirect the gas flow and a plurality of fingers in a path of the redirected gas flow. First and second flow pipes receive incoming gas and bifurcate the gas flow, which is redirected at the first curved ramp. The fingers contact and remove particles in the redirected gas flow. A second curved ramp may include at least one hole to bifurcate the gas flow into a first gas flow passing through the at least one hole and a second gas flow redirected by the second curved ramp to pass through the plurality of openings defined in the upper portion.
G01F 15/12 - Dispositions pour le nettoyage; Filtres
B01D 45/08 - Séparation de particules dispersées dans des gaz ou des vapeurs par gravité, inertie ou force centrifuge par inertie par projection contre les diaphragmes séparateurs
G01F 15/14 - Revêtements, p.ex. avec un matériau spécial
G01F 15/18 - Supports ou moyens de raccordement pour les compteurs
A decontamination device removes particles from a gas flow and is usable in a gas metering device. The decontamination device may include an upper portion defining a plurality of openings and a lower portion attached to the upper portion. In an example, the lower portion includes a first curved ramp to redirect the gas flow and a plurality of fingers in a path of the redirected gas flow. First and second flow pipes receive incoming gas and bifurcate the gas flow, which is redirected at the first curved ramp. The fingers contact and remove particles in the redirected gas flow. A second curved ramp may include at least one hole to bifurcate the gas flow into a first gas flow passing through the at least one hole and a second gas flow redirected by the second curved ramp to pass through the plurality of openings defined in the upper portion.
B01D 45/08 - Séparation de particules dispersées dans des gaz ou des vapeurs par gravité, inertie ou force centrifuge par inertie par projection contre les diaphragmes séparateurs
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p.ex. en utilisant des débitmètres à ultrasons
G01F 15/12 - Dispositions pour le nettoyage; Filtres
Techniques for controlling packet transmission levels in a multi-hop network may be performed in a distributed manner. Load-control functionality may be distributed among a plurality of nodes within a network, allowing such nodes to send feedback to upstream nodes, and receive feedback from downstream nodes. In an example, received packets are measured, such as by summing sizes of received packets over time, to determine a received traffic-level. Transmitted packets are measured, such as by summing sizes of transmitted packets over time, to determine a transmitted traffic-level. Feedback may be sent to at least one source of the received packets based at least in part on the received traffic-level and the transmitted traffic-level. The feedback may indicate a desired rate for the sender to transmit. A node may receive data from upstream node(s) and from an internal device, such as a metrology unit. Both data sources may be controlled by feedback.
H04L 47/25 - Commande de flux; Commande de la congestion le débit étant modifié par la source lors de la détection d'un changement des conditions du réseau
H04L 47/263 - Modification du taux à la source après avoir reçu des retours
H04L 47/27 - Commande de flux; Commande de la congestion Évaluation ou mise à jour de la taille de la fenêtre, p.ex. en utilisant des informations dérivées de paquets [ACK] d’acquittements
H04L 47/17 - Interaction entre les nœuds intermédiaires, p.ex. nœud après nœud.
Techniques for controlling packet transmission levels in a multi-hop network may be performed in a distributed manner. Load-control functionality may be distributed among a plurality of nodes within a network, allowing such nodes to send feedback to upstream nodes, and receive feedback from downstream nodes. In an example, received packets are measured, such as by summing sizes of received packets over time, to determine a received traffic-level. Transmitted packets are measured, such as by summing sizes of transmitted packets over time, to determine a transmitted traffic-level. Feedback may be sent to at least one source of the received packets based at least in part on the received traffic-level and the transmitted traffic-level. The feedback may indicate a desired rate for the sender to transmit. A node may receive data from upstream node(s) and from an internal device, such as a metrology unit. Both data sources may be controlled by feedback.
Methods and devices for providing routing path and transit delay time data to a device running traceroute on an IP network comprising routing tunnels are described herein. In examples, a tunnel entrance device may copy a hop limit value associated with a traceroute probe into a hop limit field of a tunneled IP header. In other examples, the tunnel entrance device may perform address spoofing to generate an error message with a source address corresponding to an intermediate device disposed within a routing tunnel. In this way, a device executing traceroute may be able to receive network addresses corresponding to intermediate devices in a routing tunnel in order to perform network diagnostics, construct routing tables, determine more efficient routing paths, and so on.
H04L 69/16 - Implémentation ou adaptation du protocole Internet [IP], du protocole de contrôle de transmission [TCP] ou du protocole datagramme utilisateur [UDP]
H04L 69/18 - Gestionnaires multi-protocoles, p.ex. dispositifs uniques capables de gérer plusieurs protocoles
H04L 69/22 - Analyse syntaxique ou évaluation d’en-têtes
Methods and devices for providing routing path and transit delay time data to a device running traceroute on an IP network comprising routing tunnels are described herein. In examples, a tunnel entrance device may copy a hop limit value associated with a traceroute probe into a hop limit field of a tunneled IP header. In other examples, the tunnel entrance device may perform address spoofing to generate an error message with a source address corresponding to an intermediate device disposed within a routing tunnel. In this way, a device executing traceroute may be able to receive network addresses corresponding to intermediate devices in a routing tunnel in order to perform network diagnostics, construct routing tables, determine more efficient routing paths, and so on.
Techniques for controlling packet transmission levels in a multi-hop network may be performed in a distributed manner. Load-control functionality may be distributed among a plurality of nodes within a network, allowing such nodes to send feedback to upstream nodes, and receive feedback from downstream nodes. In an example, received packets are measured, such as by summing sizes of received packets over time, to determine a received traffic-level. Transmitted packets are measured, such as by summing sizes of transmitted packets over time, to determine a transmitted traffic-level. Feedback may be sent to at least one source of the received packets based at least in part on the received traffic-level and the transmitted traffic-level. The feedback may indicate a desired rate for the sender to transmit. A node may receive data from upstream node(s) and from an internal device, such as a metrology unit. Both data sources may be controlled by feedback.
Methods and devices for providing routing path and transit delay time data to a device running traceroute on an IP network comprising routing tunnels are described herein. In examples, a tunnel entrance device may copy a hop limit value associated with a traceroute probe into a hop limit field of a tunneled IP header. In other examples, the tunnel entrance device may perform address spoofing to generate an error message with a source address corresponding to an intermediate device disposed within a routing tunnel. In this way, a device executing traceroute may be able to receive network addresses corresponding to intermediate devices in a routing tunnel in order to perform network diagnostics, construct routing tables, determine more efficient routing paths, and so on.
H04L 12/721 - Procédures de routage, p.ex. routage par le chemin le plus court, routage par la source, routage à état de lien ou routage par vecteur de distance
61.
MESSAGE CORRECTION AND DYNAMIC CORRECTION ADJUSTMENT FOR COMMUNICATION SYSTEMS
A device and method for receiving communications with dynamic data correction, the method including receiving at a receiving device a data packet from a sending device, the data packet including a header, and a data payload including one or more message blocks and corresponding redundancy blocks; recognizing, via pre-configuration of the receiving device, that there are redundancy blocks to receive along with the one or more message blocks and reading in the message blocks and corresponding redundancy blocks; determining that at least one of the message blocks is defective (e.g., corrupt, missing, etc.); processing one or more of the redundancy blocks to correct the defective message blocks; and optionally sending a response message to the sending device. The method may further include identifying which message blocks are defective and sending a request for, and receiving, redundancy blocks corresponding to the identified defective message blocks.
A device and method for receiving communications with dynamic data correction, the method including receiving at a receiving device a data packet from a sending device, the data packet including a header, and a data payload including one or more message blocks and corresponding redundancy blocks; recognizing, via pre-configuration of the receiving device, that there are redundancy blocks to receive along with the one or more message blocks and reading in the message blocks and corresponding redundancy blocks; determining that at least one of the message blocks is defective (e.g., corrupt, missing, etc.); processing one or more of the redundancy blocks to correct the defective message blocks; and optionally sending a response message to the sending device. The method may further include identifying which message blocks are defective and sending a request for, and receiving, redundancy blocks corresponding to the identified defective message blocks.
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H03M 13/29 - Codage, décodage ou conversion de code pour détecter ou corriger des erreurs; Hypothèses de base sur la théorie du codage; Limites de codage; Méthodes d'évaluation de la probabilité d'erreur; Modèles de canaux; Simulation ou test des codes combinant plusieurs codes ou structures de codes, p.ex. codes de produits, codes de produits généralisés, codes concaténés, codes interne et externe
H03M 13/05 - Détection d'erreurs ou correction d'erreurs transmises par redondance dans la représentation des données, c.à d. mots de code contenant plus de chiffres que les mots source utilisant un codage par blocs, c.à d. un nombre prédéterminé de bits de contrôle ajouté à un nombre prédéterminé de bits d'information
63.
MESSAGE CORRECTION AND DYNAMIC CORRECTION ADJUSTMENT FOR COMMUNICATION SYSTEMS
A device and method for receiving communications with dynamic data correction, the method including receiving at a receiving device a data packet from a sending device, the data packet including a header, and a data payload including one or more message blocks and corresponding redundancy blocks; recognizing, via pre-configuration of the receiving device, that there are redundancy blocks to receive along with the one or more message blocks and reading in the message blocks and corresponding redundancy blocks; determining that at least one of the message blocks is defective (e.g., corrupt, missing, etc.); processing one or more of the redundancy blocks to correct the defective message blocks; and optionally sending a response message to the sending device. The method may further include identifying which message blocks are defective and sending a request for, and receiving, redundancy blocks corresponding to the identified defective message blocks.
A device and method for controlling transmission power in a network device (212, 312) is disclosed. The method comprises transmitting, at an initial transmission power, an initial data transmission (228, 346) intended for at least one receiving device (214, 314) on a network, receiving an initial response (242, 348) from the at least one receiving device, the initial response including an initial received signal strength indication (RSSI), determining a power loss based on the value of the initial transmission power and the received RSSI, determining a new transmission power based on the determined power loss, and transmitting, at the new transmission power, one or more additional data transmissions intended for the at least one receiving device. The method further comprises determining whether link quality is deteriorating, and applying additional measures for optimizing transmission power based on the link quality and other factors. A solution for mitigating a loop condition is also disclosed.
H04W 52/36 - Commande de puissance d'émission [TPC Transmission power control] utilisant les limitations de la quantité totale de puissance d'émission disponible avec une plage ou un ensemble discrets de valeurs, p.ex. incrément, variation graduelle ou décalages
H04W 52/24 - Commande de puissance d'émission [TPC Transmission power control] le TPC étant effectué selon des paramètres spécifiques utilisant le rapport signal sur parasite [SIR Signal to Interference Ratio] ou d'autres paramètres de trajet sans fil
A device and method for controlling transmission power in a network device (212, 312) is disclosed. The method comprises transmitting, at an initial transmission power, an initial data transmission (228, 346) intended for at least one receiving device (214, 314) on a network, receiving an initial response (242, 348) from the at least one receiving device, the initial response including an initial received signal strength indication (RSSI), determining a power loss based on the value of the initial transmission power and the received RSSI, determining a new transmission power based on the determined power loss, and transmitting, at the new transmission power, one or more additional data transmissions intended for the at least one receiving device. The method further comprises determining whether link quality is deteriorating, and applying additional measures for optimizing transmission power based on the link quality and other factors. A solution for mitigating a loop condition is also disclosed.
H04W 52/36 - Commande de puissance d'émission [TPC Transmission power control] utilisant les limitations de la quantité totale de puissance d'émission disponible avec une plage ou un ensemble discrets de valeurs, p.ex. incrément, variation graduelle ou décalages
H04W 52/14 - Analyse séparée de la liaison montante ou de la liaison descendante
H04W 52/24 - Commande de puissance d'émission [TPC Transmission power control] le TPC étant effectué selon des paramètres spécifiques utilisant le rapport signal sur parasite [SIR Signal to Interference Ratio] ou d'autres paramètres de trajet sans fil
A sensor for measuring the flow rate of a fluid in a flow tube, the sensor comprising sensing means and a sensor body, wherein a portion of the sensing means is located within the sensor body and a first portion of the sensor body is arranged to fasten the sensor body to the flow tube such that the sensor is positioned for sensing the flow rate of the fluid in the flow tube.
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p.ex. en utilisant des débitmètres à ultrasons
A sensor (230, 240) for measuring the flow rate of a fluid in a flow tube (210), the sensor (230, 240) comprising sensing means (232, 242) and a sensor body (231, 241), wherein a portion of the sensing means (232, 242) is located within the sensor body (231, 241) and a first portion of the sensor body (231, 241) is arranged to fasten the sensor body (231, 241) to the flow tube (210) such that the sensor (230, 240) is positioned for sensing the flow rate of the fluid in the flow tube (210).
A device and method for controlling transmission power in a network device is disclosed. The method comprises transmitting, at an initial transmission power, an initial data transmission intended for at least one receiving device on a network, receiving an initial response from the at least one receiving device, the initial response including an initial received signal strength indication (RSSI), determining a power loss based on the value of the initial transmission power and the received RSSI, determining a new transmission power based on the determined power loss, and transmitting, at the new transmission power, one or more additional data transmissions intended for the at least one receiving device. The method further comprises determining whether link quality is deteriorating, and applying additional measures for optimizing transmission power based on the link quality and other factors. A solution for mitigating a loop condition is also disclosed.
H04W 52/24 - Commande de puissance d'émission [TPC Transmission power control] le TPC étant effectué selon des paramètres spécifiques utilisant le rapport signal sur parasite [SIR Signal to Interference Ratio] ou d'autres paramètres de trajet sans fil
H04W 52/36 - Commande de puissance d'émission [TPC Transmission power control] utilisant les limitations de la quantité totale de puissance d'émission disponible avec une plage ou un ensemble discrets de valeurs, p.ex. incrément, variation graduelle ou décalages
69.
COHERENT LINK QUALITY ACROSS MULTIPLE MODULATIONS BASED ON ERROR RATE PREDICTION FOR DIFFERENT MODULATION SCHEMES
Techniques directed to attributing information regarding communications with a modulation scheme to a different modulation scheme are described. In one example, a successful communication for a higher data rate modulation scheme may be attributed to a lower data rate modulation scheme. Such attribution may infer that the lower data rate modulation scheme would have also been successful if it had been used. In another example, an unsuccessful communication for a lower data rate modulation may be attributed to a higher data rate modulation scheme. Here, such attribution may infer that the higher data rate modulation scheme would have also been unsuccessful if it had been used.
Techniques for employing a Mains Powered Device as a proxy for communicating on behalf of a Battery Powered Device are described herein. In some examples, the Mains Powered Device may be a parent node to the Battery Powered Device in a network which operates using a Routing Protocol for Low-Power and Lossy Networks (RPL). The Mains Powered Device may detect and/or forward a Destination Advertisement Object (DAO) transmitted from the Battery Powered Device to a DODAG root of the network, and begin to perform subsequent transmission of DAOs on behalf of the Battery Powered Device. In this way, the Mains Powered Device updates a routing table of the DODAG root periodically to include an indication of the Battery Powered Device as existing in the network, while extending the battery life of the Battery Powered Device by transmitting DAOs on behalf of the Battery Powered Device.
G06F 1/3234 - Gestion de l’alimentation, c. à d. passage en mode d’économie d’énergie amorcé par événements Économie d’énergie caractérisée par l'action entreprise
H04W 40/20 - Sélection d'itinéraire ou de voie de communication, p.ex. routage basé sur l'énergie disponible ou le chemin le plus court sur la base de la position ou de la localisation géographique
H04L 29/08 - Procédure de commande de la transmission, p.ex. procédure de commande du niveau de la liaison
G06F 1/32 - Moyens destinés à économiser de l'énergie
H04L 12/24 - Dispositions pour la maintenance ou la gestion
H04W 88/18 - Dispositifs de logistique; Dispositifs de gestion de réseaux
Techniques for providing additional timing information in periodic beacons in a network to enable battery powered devices to determine more appropriate listening windows for receiving the periodic beacons are described herein. In some examples, the battery powered devices use the additional information to determine more accurate listening windows based on a drift time of their internal clocks, and a jitter time of the network and/or a Coordinated Universal Time (UTC). Additionally, techniques for modifying when mains powered devices update their internal clocks based on transmission of beacons to downstream devices are described herein. For instance, the mains powered devices may refrain from updating their internal clocks to an updated network reference time until transmission of downstream beacons have occurred. In this way, timing synchronization of devices in a network may be improved, and battery life of battery powered devices in the network may be extended.
Techniques for providing additional timing information in periodic beacons in a network to enable battery powered devices to determine more appropriate listening windows for receiving the periodic beacons are described herein. In some examples, the battery powered devices use the additional information to determine more accurate listening windows based on a drift time of their internal clocks, and a jitter time of the network and/or a Coordinated Universal Time (UTC). Additionally, techniques for modifying when mains powered devices update their internal clocks based on transmission of beacons to downstream devices are described herein. For instance, the mains powered devices may refrain from updating their internal clocks to an updated network reference time until transmission of downstream beacons have occurred. In this way, timing synchronization of devices in a network may be improved, and battery life of battery powered devices in the network may be extended.
Techniques directed to servicing communications based on when communication sessions are initialized for nodes are described. For example, a routing device may prioritize packets in a buffer according to when nodes have initiated communication sessions with a service provider or another node. The routing device may give priority to nodes that have first initiated communication sessions. This may avoid communication sessions ending prematurely due to time-out periods and/or avoid delays in completing communication sessions.
H04L 47/28 - Commande de flux; Commande de la congestion par rapport à des considérations temporelles
H04L 47/6275 - Ordonnancement des files d’attente caractérisé par des critères d’ordonnancement pour des créneaux de service ou des commandes de service basé sur la priorité
H04L 67/00 - Dispositions ou protocoles de réseau pour la prise en charge de services ou d'applications réseau
Techniques for employing a Mains Powered Device as a proxy for communicating on behalf of a Battery Powered Device are described herein. In some examples, the Mains Powered Device may be a parent node to the Battery Powered Device in a network which operates using a Routing Protocol for Low -Power and Lossy Networks (RPL). The Mains Powered Device may detect and/or forward a Destination Advertisement Object (DAO) transmitted from the Battery Powered Device to a DODAG root of the network, and begin to perform subsequent transmission of DAOs on behalf of the Battery Powered Device. In this way, the Mains Powered Device updates a routing table of the DODAG root periodically to include an indication of the Battery Powered Device as existing in the network, while extending the battery life of the Battery Powered Device by transmitting DAOs on behalf of the Battery Powered Device.
H04L 41/12 - Découverte ou gestion des topologies de réseau
H04W 40/20 - Sélection d'itinéraire ou de voie de communication, p.ex. routage basé sur l'énergie disponible ou le chemin le plus court sur la base de la position ou de la localisation géographique
H04L 67/565 - Conversion ou adaptation du format ou du contenu d'applications
75.
Packet servicing priority based on communication initialization
Techniques directed to servicing communications based on when communication sessions are initialized for nodes are described. For example, a routing device may prioritize packets in a buffer according to when nodes have initiated communication sessions with a service provider or another node. The routing device may give priority to nodes that have first initiated communication sessions. This may avoid communication sessions ending prematurely due to time-out periods and/or avoid delays in completing communication sessions.
Techniques directed to attributing information regarding communications with a modulation scheme to a different modulation scheme are described. In one example, a successful communication for a higher data rate modulation scheme may be attributed to a lower data rate modulation scheme. Such attribution may infer that the lower data rate modulation scheme would have also been successful if it had been used. In another example, an unsuccessful communication for a lower data rate modulation may be attributed to a higher data rate modulation scheme. Here, such attribution may infer that the higher data rate modulation scheme would have also been unsuccessful if it had been used.
Techniques for providing additional timing information in periodic beacons in a network to enable battery powered devices to determine more appropriate listening windows for receiving the periodic beacons are described herein. In some examples, the battery powered devices use the additional information to determine more accurate listening windows based on a drift time of their internal clocks, and a jitter time of the network and/or a Coordinated Universal Time (UTC). Additionally, techniques for modifying when mains powered devices update their internal clocks based on transmission of beacons to downstream devices are described herein. For instance, the mains powered devices may refrain from updating their internal clocks to an updated network reference time until transmission of downstream beacons have occurred. In this way, timing synchronization of devices in a network may be improved, and battery life of battery powered devices in the network may be extended.
Techniques directed to servicing communications based on when communication sessions are initialized for nodes are described. For example, a routing device may prioritize packets in a buffer according to when nodes have initiated communication sessions with a service provider or another node. The routing device may give priority to nodes that have first initiated communication sessions. This may avoid communication sessions ending prematurely due to time-out periods and/or avoid delays in completing communication sessions.
Techniques directed to attributing information regarding communications with a modulation scheme to a different modulation scheme are described. In one example, a successful communication for a higher data rate modulation scheme may be attributed to a lower data rate modulation scheme. Such attribution may infer that the lower data rate modulation scheme would have also been successful if it had been used. In another example, an unsuccessful communication for a lower data rate modulation may be attributed to a higher data rate modulation scheme. Here, such attribution may infer that the higher data rate modulation scheme would have also been unsuccessful if it had been used.
Techniques for employing a Mains Powered Device as a proxy for communicating on behalf of a Battery Powered Device are described herein. In some examples, the Mains Powered Device may be a parent node to the Battery Powered Device in a network which operates using a Routing Protocol for Low -Power and Lossy Networks (RPL). The Mains Powered Device may detect and/or forward a Destination Advertisement Object (DAO) transmitted from the Battery Powered Device to a DODAG root of the network, and begin to perform subsequent transmission of DAOs on behalf of the Battery Powered Device. In this way, the Mains Powered Device updates a routing table of the DODAG root periodically to include an indication of the Battery Powered Device as existing in the network, while extending the battery life of the Battery Powered Device by transmitting DAOs on behalf of the Battery Powered Device.
H04L 29/08 - Procédure de commande de la transmission, p.ex. procédure de commande du niveau de la liaison
H04W 40/20 - Sélection d'itinéraire ou de voie de communication, p.ex. routage basé sur l'énergie disponible ou le chemin le plus court sur la base de la position ou de la localisation géographique
81.
Determination of instantaneous impedance of an AC power line used as a transmission line
Given a node of a utility service distribution network, a topology of a subset of the distribution network having the given node as a root node and one or more child nodes branching from the given node is determined. The topology may be determined based on relationships or correlations of utility usage information between the given node and a plurality of potential nodes that are considered in the topology determination. Upon determining the topology associated with the given node, the determined topology may be used to detect fraud and leakage that may occur in the distribution network on a regular basis or upon request. If fraud or leakage is detected in the distribution network, the system may schedule a follow-up and/or field investigation to investigate and fix the fraud or the leakage in the distribution network.
H04Q 9/00 - Dispositions dans les systèmes de commande à distance ou de télémétrie pour appeler sélectivement une sous-station à partir d'une station principale, sous-station dans laquelle un appareil recherché est choisi pour appliquer un signal de commande ou
H02J 13/00 - Circuits pour pourvoir à l'indication à distance des conditions d'un réseau, p.ex. un enregistrement instantané des conditions d'ouverture ou de fermeture de chaque sectionneur du réseau; Circuits pour pourvoir à la commande à distance des moyens de commutation dans un réseau de distribution d'énergie, p.ex. mise en ou hors circuit de consommateurs de courant par l'utilisation de signaux d'impulsion codés transmis par le réseau
A solderless joint arrangement comprising a receptacle (11) of a PCB (10) arranged to receive a conductive compliant pin, the receptacle (11) comprising a conductive portion (12) for contact with the compliant pin wherein the receptacle is positioned on a flexible portion (20) of the PCB.
H05K 1/11 - Eléments imprimés pour réaliser des connexions électriques avec ou entre des circuits imprimés
H05K 3/32 - Connexions électriques des composants électriques ou des fils à des circuits imprimés
H01R 12/58 - Connexions fixes pour circuits imprimés rigides ou structures similaires caractérisées par les bornes bornes pour insertion dans des trous
A method for detection of a utility meter having been tampered with, in particular a water or heat meter having been tampered with, and a meter for detecting such tampering are provided. The utility meter comprises a flow measurement portion in which the flow of water is measured. The method comprises detecting a presence of air in the flow measurement portion and evaluating a fraud condition, wherein the fraud condition comprises that air is present in the flow measurement portion for a first period of time or more. In response to the fraud condition being evaluated as met, an alert is generated.
G01F 15/00 - MESURE DES VOLUMES, DES DÉBITS VOLUMÉTRIQUES, DES DÉBITS MASSIQUES OU DU NIVEAU DES LIQUIDES; COMPTAGE VOLUMÉTRIQUE - Détails des appareils des groupes ou accessoires pour ces derniers, dans la mesure où de tels accessoires ou détails ne sont pas adaptés à ces types particuliers d'appareils, p.ex. pour l'indication à distance
A new device is deployed to an area in which a network is provided. The new device may join the network using a single handshake via a neighboring device that is a member of the network and register with a network management system managing the network. If the network is overloaded or has limited bandwidth remaining, the network may refuse to admit the new device, or if the new device is isolated, may force some devices that are members of the network to leave or migrate from the network to allow the isolated device to join the network.
H04W 28/08 - Gestion du trafic, p.ex. régulation de flux ou d'encombrement Équilibrage ou répartition des charges
H04L 12/911 - Contrôle d’admission au réseau et allocation de ressources, p.ex. allocation de bande passante ou renégociation en cours de communication
H04L 12/919 - Attribution dynamique de ressources, p.ex. renégociation en cours de communication demandée par l’utilisateur ou sur changement de l’état du réseau demandé par le réseau initiée par l’extrémité source
H04L 12/923 - Attribution dynamique de ressources, p.ex. renégociation en cours de communication demandée par l’utilisateur ou sur changement de l’état du réseau demandé par le réseau initiée par le réseau
H04W 36/22 - Exécution d'une resélection à des fins spécifiques pour gérer le trafic
H04W 60/00 - Rattachement à un réseau, p.ex. enregistrement; Suppression du rattachement à un réseau, p.ex. annulation de l'enregistrement
H04W 84/18 - Réseaux auto-organisés, p.ex. réseaux ad hoc ou réseaux de détection
H04W 88/04 - Dispositifs terminaux adapté à la retransmission à destination ou en provenance d'un autre terminal ou utilisateur
H04W 84/12 - Réseaux locaux sans fil [WLAN Wireless Local Area Network]
86.
RELEASE MECHANISM FOR TRAPPED AIR IN A FLUID FLOW DEVICE
Mechanisms and methods for minimizing trapped air in a fluid flow device are disclosed. An example device includes a first chamber having an inlet and outlet for substantially horizontal fluid flow, a second chamber at least partially openly disposed above the first chamber, and a tube vertically disposed in the second chamber from the second chamber ceiling to the first chamber. When fluid flows from the inlet to the outlet, at least a portion of the fluid flows into the second chamber and air collected at its ceiling moves down the tube and into the first chamber. The ceiling of the second chamber may be contoured such that a first internal height at a first location of the second chamber is greater than a second internal height at a second location, forming a pocket at the ceiling at the first location where air can collect before entering the tube.
G01F 1/10 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets mécaniques en utilisant des aubes tournantes avec admission axiale
G01F 1/11 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets mécaniques en utilisant des aubes tournantes avec admission axiale avec accouplement mécanique au dispositif indicateur
G01F 15/14 - Revêtements, p.ex. avec un matériau spécial
G01F 1/05 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets mécaniques
G01F 15/00 - MESURE DES VOLUMES, DES DÉBITS VOLUMÉTRIQUES, DES DÉBITS MASSIQUES OU DU NIVEAU DES LIQUIDES; COMPTAGE VOLUMÉTRIQUE - Détails des appareils des groupes ou accessoires pour ces derniers, dans la mesure où de tels accessoires ou détails ne sont pas adaptés à ces types particuliers d'appareils, p.ex. pour l'indication à distance
G01F 15/08 - Séparateurs d'air ou de gaz en combinaison avec des compteurs de liquides; Séparateurs de liquide en combinaison avec des compteurs de gaz
Techniques detect an electrical phase used by electrical network devices (e.g., a transformer, electrical meter, etc.). Voltage measurement data is obtained, such as from electrical meters. The voltage measurement data may be associated with a timestamp, and may be made at intervals over a period of time. Voltage changes may be calculated using the voltage measurement data. In an example, the voltage change is a difference determined between sequential voltage measurements. In some instances, voltage changes data is removed if it exceeds a threshold. An initial classification of network devices (e.g., randomly or by assumed electrical phase) is determined. A clustering technique (e.g., k-means) is applied, wherein the classification is updated in a manner that segregates the network devices according to actual electrical phase.
H02J 3/12 - Circuits pour réseaux principaux ou de distribution, à courant alternatif pour règler la tension dans des réseaux à courant alternatif par changement d'une caractéristique de la charge du réseau
H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif
G05B 13/02 - Systèmes de commande adaptatifs, c. à d. systèmes se réglant eux-mêmes automatiquement pour obtenir un rendement optimal suivant un critère prédéterminé électriques
G01R 19/25 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe utilisant une méthode de mesure numérique
H02J 3/26 - Dispositions pour l'élimination ou la réduction des asymétries dans les réseaux polyphasés
H02J 13/00 - Circuits pour pourvoir à l'indication à distance des conditions d'un réseau, p.ex. un enregistrement instantané des conditions d'ouverture ou de fermeture de chaque sectionneur du réseau; Circuits pour pourvoir à la commande à distance des moyens de commutation dans un réseau de distribution d'énergie, p.ex. mise en ou hors circuit de consommateurs de courant par l'utilisation de signaux d'impulsion codés transmis par le réseau
Techniques detect an electrical phase used by electrical network devices (e.g., a transformer, electrical meter, etc.). Voltage measurement data is obtained, such as from electrical meters. The voltage measurement data may be associated with a timestamp, and may be made at intervals over a period of time. Voltage changes may be calculated using the voltage measurement data. In an example, the voltage change is a difference determined between sequential voltage measurements. In some instances, voltage changes data is removed if it exceeds a threshold. An initial classification of network devices (e.g., randomly or by assumed electrical phase) is determined. A clustering technique (e.g., k-means) is applied, wherein the classification is updated in a manner that segregates the network devices according to actual electrical phase.
H02J 13/00 - Circuits pour pourvoir à l'indication à distance des conditions d'un réseau, p.ex. un enregistrement instantané des conditions d'ouverture ou de fermeture de chaque sectionneur du réseau; Circuits pour pourvoir à la commande à distance des moyens de commutation dans un réseau de distribution d'énergie, p.ex. mise en ou hors circuit de consommateurs de courant par l'utilisation de signaux d'impulsion codés transmis par le réseau
G01R 19/25 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe utilisant une méthode de mesure numérique
H02J 3/26 - Dispositions pour l'élimination ou la réduction des asymétries dans les réseaux polyphasés
89.
METHODS AND APPARATUS TO DETECT COMPOUND METER FAILURE
Methods and apparatus to determine compound meter failure are disclosed. One disclosed example apparatus includes a receiver to receive fluid flow rate data from a first fluid flow rate meter on a first channel of a compound utility meter and a second fluid flow rate meter on a second channel of the compound utility meter. The example apparatus also includes a processor communicatively coupled to the receiver, where the processor is to determine a failure condition of the compound utility meter based on the flow rate data received from the first and second fluid flow rate meters.
G01F 7/00 - Dispositifs de mesure du débit volumétrique avec plusieurs gammes de mesure; Compteurs composés
G01F 15/10 - Prévention des avaries par le gel ou par suite d'un excès ou d'une insuffisance de pression
G01F 25/00 - Test ou étalonnage des appareils pour la mesure du volume, du débit volumétrique ou du niveau des liquides, ou des appareils pour compter par volume
Techniques detect an electrical phase used by electrical network devices (e.g., a transformer, electrical meter, etc.). Voltage measurement data is obtained, such as from electrical meters. The voltage measurement data may be associated with a timestamp, and may be made at intervals over a period of time. Voltage changes may be calculated using the voltage measurement data. In an example, the voltage change is a difference determined between sequential voltage measurements. In some instances, voltage changes data is removed if it exceeds a threshold. An initial classification of network devices (e.g., randomly or by assumed electrical phase) is determined. A clustering technique (e.g., k-means) is applied, wherein the classification is updated in a manner that segregates the network devices according to actual electrical phase.
H02J 13/00 - Circuits pour pourvoir à l'indication à distance des conditions d'un réseau, p.ex. un enregistrement instantané des conditions d'ouverture ou de fermeture de chaque sectionneur du réseau; Circuits pour pourvoir à la commande à distance des moyens de commutation dans un réseau de distribution d'énergie, p.ex. mise en ou hors circuit de consommateurs de courant par l'utilisation de signaux d'impulsion codés transmis par le réseau
G01R 19/25 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe utilisant une méthode de mesure numérique
H02J 3/26 - Dispositions pour l'élimination ou la réduction des asymétries dans les réseaux polyphasés
91.
A METER AND METHOD FOR DETECTION OF A METER HAVING BEEN TAMPERED WITH
A method for detection of a utility meter having been tampered with, in particular a water or heat meter having been tampered with, and a meter for detecting such tampering are provided. The utility meter comprises a flow measurement portion in which the flow of water is measured. The method comprises detecting a presence of air in the flow measurement portion and evaluating a fraud condition, wherein the fraud condition comprises that air is present in the flow measurement portion for a first period of time or more. In response to the fraud condition being evaluated as met, an alert is generated.
G01F 15/00 - MESURE DES VOLUMES, DES DÉBITS VOLUMÉTRIQUES, DES DÉBITS MASSIQUES OU DU NIVEAU DES LIQUIDES; COMPTAGE VOLUMÉTRIQUE - Détails des appareils des groupes ou accessoires pour ces derniers, dans la mesure où de tels accessoires ou détails ne sont pas adaptés à ces types particuliers d'appareils, p.ex. pour l'indication à distance
Techniques for frequency-hopping sequence-generation are described herein. In one example, a sequence of pseudo random numbers may be used to generate a scrambling sequence. The scrambling sequence may be used to map an unscrambled sequence of channels into a scrambled sequence of channels. Channel-repeats may be detected in the scrambled sequence of channels and resolved. Channel whitening may be performed to reduce channel overuse resulting from the channel-repeat resolutions. The scrambled sequence of channels may be provided to a radio to enable the radio to tune to the channels indicated by the scrambled sequence of channels.
Methods and apparatus for sealed communication interfaces are disclosed. One example apparatus includes a translucent portion of a sealing gasket to allow signals to pass therethrough, a sealing wall of the gasket to define a substantially environmentally-isolated zone proximate the translucent portion, and a transmitter to transmit a signal across the translucent portion. The example apparatus also includes a receiver to detect a reflected signal corresponding to the transmitted signal, where the detection enables data communications across the translucent portion, and where the reflected signal is to be reflected from a surface on an opposite side of the translucent portion from the transmitter and receiver.
H04B 10/40 - Systèmes de transmission utilisant des ondes électromagnétiques autres que les ondes hertziennes, p.ex. les infrarouges, la lumière visible ou ultraviolette, ou utilisant des radiations corpusculaires, p.ex. les communications quantiques Émetteurs-récepteurs
H04B 10/80 - Aspects optiques concernant l’utilisation de la transmission optique pour des applications spécifiques non prévues dans les groupes , p.ex. alimentation par faisceau optique ou transmission optique dans l’eau
Separable endpoints and methods of using the same are disclosed. An example apparatus includes a housing having a first compartment and a second compartment, a demarcation of the housing separates the first and second compartments. The example apparatus also includes a battery disposed in the first compartment and electronic components disposed in the second compartment, the electronic components are coupled to the battery through the demarcation, the housing is configured to be separated along or adjacent to the demarcation to enable at least one of the battery or the electronic components to enter an electronic end-of-life management network.
Determination of electrical network topology and connectivity are described herein. A zero-crossing is indicated at a time when the line voltage of a conducting wire in an electrical grid is zero. Such zero-crossings may be used to measure time within a smart grid, and to determine the connectivity of, and the electrical phase used by, particular network elements. A first meter may receive a phase angle determination (PAD) message, including zero-crossing information, sent from a second meter, hereafter called a reference meter. The first meter may compare the received zero-crossing information to its own zero-crossing information. A phase difference may be determined between the first meter and the reference meter from which the PAD message originated. The first meter may pass the PAD message to additional meters, which propagate the message through the network. Accordingly, an electrical phase used by meters within the network may be determined.
Determination of electrical network topology and connectivity are described herein. A zero-crossing is indicated at a time when the line voltage of a conducting wire in an electrical grid is zero. Such zero-crossings may be used to measure time within a smart grid, and to determine the connectivity of, and the electrical phase used by, particular network elements. A first meter may receive a phase angle determination (PAD) message, including zero-crossing information, sent from a second meter, hereafter called a reference meter. The first meter may compare the received zero-crossing information to its own zero-crossing information. A phase difference may be determined between the first meter and the reference meter from which the PAD message originated. The first meter may pass the PAD message to additional meters, which propagate the message through the network. Accordingly, an electrical phase used by meters within the network may be determined.
Determination of electrical network topology and connectivity are described herein. A zero-crossing is indicated at a time when the line voltage of a conducting wire in an electrical grid is zero. Such zero-crossings may be used to measure time within a smart grid, and to determine the connectivity of, and the electrical phase used by, particular network elements. A first meter may receive a phase angle determination (PAD) message, including zero-crossing information, sent from a second meter, hereafter called a reference meter. The first meter may compare the received zero-crossing information to its own zero-crossing information. A phase difference may be determined between the first meter and the reference meter from which the PAD message originated. The first meter may pass the PAD message to additional meters, which propagate the message through the network. Accordingly, an electrical phase used by meters within the network may be determined.
Disclosed is a metrology assembly that utilizes a multi-Hall effect device configuration which eliminates the necessity of a magnetic concentrator. In some embodiments, the metrology assembly includes a substrate or support platform configured to support at least two Hall effect devices per phase of an electricity meter. The metrology assembly may further include one or more electrical conductors coupled to the substrate and configured to conduct electric current. The at least two Hall effect devices may be coupled to the substrate at opposing sides of an associated electrical conductor, each Hall effect device being configured to detect a magnetic field created by the electric current of the associated electrical conductor, and to generate an output.
G01R 33/00 - Dispositions ou appareils pour la mesure des grandeurs magnétiques
G01R 15/20 - Adaptations fournissant une isolation en tension ou en courant, p.ex. adaptations pour les réseaux à haute tension ou à courant fort utilisant des dispositifs galvano-magnétiques, p.ex. des dispositifs à effet Hall
G01R 22/06 - Dispositions pour la mesure de l'intégrale dans le temps d'une puissance électrique ou d'un courant, p.ex. compteurs d'électricité par des méthodes électroniques
A tamper detection assembly comprising a first resiliently biased member supported on a first portion of a shaft of a first support member, where the first resiliently biased member passes through the shaft, and a second resiliently biased member supported on a second portion of the shaft of the first support member wherein the first resiliently biased member is arranged to electrically bridge contacts on a second support member to indicate a tamper event when the biasing force of the second resiliently biased member is greater than any compression force thereon.
H01H 9/22 - Mécanismes d'interverrouillage, verrouillage ou accrochage pour interverrouillage entre enveloppe, capot ou volet de protection et le mécanisme actionnant les contacts
H01H 13/18 - Organes d'actionnement, p.ex. bouton-poussoir adaptés pour être actionnés dans une position limite ou autre position prédéterminée dans le trajet d'un corps, le mouvement relatif de l'interrupteur et du corps ayant principalement un autre but que d'actionner l'interrupteur, p.ex. interrupteur de
F24D 19/10 - Aménagements ou montage des dispositifs de commande ou de sécurité
G01K 17/08 - Mesure d'une quantité de chaleur transportée par des milieux en écoulement, p.ex. dans les systèmes de chauffage basée sur la mesure d'une différence de température
Disclosed are techniques to minimize the electricity consumption of battery powered devices during network communications and performance of other functions. Example techniques include efficiently discovering other mains powered and battery powered devices within communication range of the battery powered device. In another example, techniques enable a battery powered device to serve as a relay for one or more other battery powered devices. In another example, techniques ensure that transmissions to and/or from battery powered devices are delivered efficiently and with low latency. In yet another example, techniques determine whether and under what conditions a battery powered device should migrate from one network to another. In the event of migration, example techniques minimize battery consumption associated with the migration.
H04W 4/80 - Services utilisant la communication de courte portée, p.ex. la communication en champ proche, l'identification par radiofréquence ou la communication à faible consommation d’énergie
H04Q 9/00 - Dispositions dans les systèmes de commande à distance ou de télémétrie pour appeler sélectivement une sous-station à partir d'une station principale, sous-station dans laquelle un appareil recherché est choisi pour appliquer un signal de commande ou
H04W 8/00 - Gestion de données relatives au réseau
H04L 29/08 - Procédure de commande de la transmission, p.ex. procédure de commande du niveau de la liaison
brevets
