A sound source for acoustic communication, navigation, and networking of an underwater glider may include a cylindrical body, a rigid front section disposed anteriorly to the cylindrical body, a plurality of metal rods, a resonant pipe surrounding the rods, and a rod-mounted piezo-ceramic transducer disposed between the body and the front section. Each rod may be attached at a first end to an anterior portion of the body and at a second end to a posterior portion of the front section. The pipe may be disposed between the body and the front section. The transducer may be disposed within the pipe. A posterior end of the pipe may be separated from the anterior portion of the body by a first orifice, and an anterior end of the pipe may be separated from the posterior portion of the front section by a second orifice.
B63G 8/39 - Disposition des instruments de veille sonique, p.ex. basse fréquence, sonar
B06B 1/06 - Procédés ou appareils pour produire des vibrations mécaniques de fréquence infrasonore, sonore ou ultrasonore utilisant l'énergie électrique fonctionnant par effet piézo-électrique ou par électrostriction
A connector assembly includes a first and a second releasable and mateable connector. Each connector includes a front assembly composed of a manifold and a plurality of optical stems. Each manifold includes a plurality of inserts and a plurality of spherical seal assemblies. Each seal assembly is composed of a spherical ball, a ball dowel pin, and a ball actuator pin having a cam. Each spherical ball is configured to rotate about an axis defined by the two pins when the actuator pin cam traverses a groove fabricated in one of a plurality of guide rails disposed in the first connector. When the plurality of seal assemblies are in an open configuration, the optical stems of the first connector may slide through the inserts of the first connector, through the seals, and mate with the optical stems of the second connector within the inserts of the second connector.
A flexible lid seal detector incorporates a compression body having a cavity including a sensor. The detector has a distal end comprising a plurality of concentric compression rings surrounding the cavity. An outer-most ring is defined by outer and inner shaping rims. The distal end includes a recessed lid deflection volume defined by the inner rim and a distal surface of the compression body. The deflection volume may receive a portion of a flexible lid when at least one of the rings applies a compressive force thereto, thereby deforming the lid into the deflection volume. The deflection volume may include a second compression ring and its respective inner and outer shaping rims. A seal detector system may include the detector with a controller configured to receive data from the sensor for a predetermined period of time while the detector applies the compressive force to the lid.
G01M 3/36 - 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 détection des variations dans les dimensions de la structure à tester
An underwater active sonar system and method for measuring instrument velocity with respect to a boundary surface is disclosed. The system includes an acoustic transducer configured to transmit and receive a plurality of acoustic beams in different directions. The system also includes a processor configured to detect a boundary surface within each beam; iteratively filter received acoustic signals backscattered from the transmitted beams with an adaptive filter and associated bandwidth that is successively decreased for each iteration; and measure instrument velocity with respect to the boundary surface.
G01S 15/60 - Systèmes de détermination de la trajectoire ou de la vitesse; Systèmes de détermination du sens d'un mouvement dans lesquels l'émetteur et le récepteur sont montés sur l'objet mobile, p.ex. pour déterminer la vitesse par rapport au sol, l'angle de dérive, le trajet au sol
G01S 7/54 - DÉTERMINATION DE LA DIRECTION PAR RADIO; RADIO-NAVIGATION; DÉTERMINATION DE LA DISTANCE OU DE LA VITESSE EN UTILISANT DES ONDES RADIO; LOCALISATION OU DÉTECTION DE LA PRÉSENCE EN UTILISANT LA RÉFLEXION OU LA RERADIATION D'ONDES RADIO; DISPOSITIONS ANALOGUES UTILISANT D'AUTRES ONDES - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe avec des récepteurs séparés
5.
Electro-pneumatic module for enhanced gas titration/dilution processing
A submersible sound system may include a housing, an end piece, an elastic membrane, an end cap affixed to the elastic membrane, and a subwoofer speaker system disposed within the housing and supported by a speaker support. A bubble sound source may be defined by the speaker support, the speaker diaphragm, an anterior end of the housing, the elastic membrane, and the end cap. The housing, end piece, and a posterior surface of the speaker support may form a sealed enclosure. The sound system may include a tuning pipe disposed between the sealed enclosure and the bubble sound source. A Helmholtz resonator may be disposed anteriorly of the speaker system. Multiple sound system may be assembled to form a cluster. The cluster may be defined by the vertices of regular polyhedron. The sound systems may be controlled to maintain the speaker systems within acceptable thermal limits.
H04R 29/00 - Dispositifs de contrôle; Dispositifs de tests
G10K 11/172 - Procédés ou dispositifs de protection contre le bruit ou les autres ondes acoustiques ou pour amortir ceux-ci, en général utilisant des effets de résonance
G01V 1/133 - Production d'énergie sismique en utilisant des fluides comme moyens d'entraînement hydrauliques, p.ex. en utilisant des fluides à haute pression
An underwater sound source includes a cylindrical body having a front body portion, a rear body portion, a cylindrical piezo-ceramic ring transducer disposed therebetween, a flexible sleeve configured to cover an outer surface of the cylindrical piezo ceramic ring transducer, and a resonant pipe mounted to the cylindrical body and surrounding the cylindrical piezo-ceramic ring transducer. The resonant pipe is disposed around the cylindrical piezo-ceramic ring transducer, forming a gap between an inner surface of the resonant pipe and the outer surface of the cylindrical piezo-ceramic ring transducer.
G01K 9/00 - Mesure de la température basée sur les mouvements provoqués par une redistribution de poids, p.ex. thermomètre basculant
G10K 9/122 - Dispositifs dans lesquels le son est produit par la vibration d'un diaphragme ou un élément analogue, p.ex. cornes de brume, avertisseurs de véhicule ou vibreurs fonctionnant électriquement utilisant des moyens d'entraînement piézo-électriques
B06B 1/06 - Procédés ou appareils pour produire des vibrations mécaniques de fréquence infrasonore, sonore ou ultrasonore utilisant l'énergie électrique fonctionnant par effet piézo-électrique ou par électrostriction
A small aperture acoustic velocity sensor and a method for velocity measurement are disclosed. In one aspect, the disclosed technology uses spatially-shifted sub-arrays for projection and/or hydrophone receipt and cross-correlation of successive pulses to improve correlation and reduce bias. The spatial shift can be created physically by selection of groups of elements or virtually by weighting the contributions of fixed sub-arrays. Spatial modulation can be used to form a projected signal and measured spatial phase of slope across the set of sub-arrays allows correction of both long- and short-term errors. The disclosed technology uses spatial and/or temporal interpolation.
G01S 15/60 - Systèmes de détermination de la trajectoire ou de la vitesse; Systèmes de détermination du sens d'un mouvement dans lesquels l'émetteur et le récepteur sont montés sur l'objet mobile, p.ex. pour déterminer la vitesse par rapport au sol, l'angle de dérive, le trajet au sol
G01S 7/52 - DÉTERMINATION DE LA DIRECTION PAR RADIO; RADIO-NAVIGATION; DÉTERMINATION DE LA DISTANCE OU DE LA VITESSE EN UTILISANT DES ONDES RADIO; LOCALISATION OU DÉTECTION DE LA PRÉSENCE EN UTILISANT LA RÉFLEXION OU LA RERADIATION D'ONDES RADIO; DISPOSITIONS ANALOGUES UTILISANT D'AUTRES ONDES - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe
9.
Acoustic dual-frequency phased array with common beam angles
An acoustic dual-frequency phased array system with common beam angles is disclosed. In one aspect, the system includes a planar array of transducer elements and a multiplexing circuit for selecting between a first state and a second state during either transmit operation, receive operation or both transmit and receive operation. The multiplexer is configured to connect transducer elements to a plurality of connections different between the first state and second state. The system is configured to transmit and receive beams at a first frequency when the multiplexer is in the first state and transmit and receive beams at a second frequency when the multiplexer is in the second state. The angle of the beams from vertical in the first and second state are substantially similar.
G01S 15/89 - Systèmes sonar, spécialement adaptés à des applications spécifiques pour la cartographie ou la représentation
G10K 11/34 - Procédés ou dispositifs pour transmettre, conduire ou diriger le son pour focaliser ou pour diriger le son, p.ex. balayage par commande électrique de systèmes de transducteurs, p.ex. en dirigeant un faisceau acoustique
A submersible sound system may include a housing, an end piece, an elastic membrane, an end cap affixed to the elastic membrane, and a subwoofer speaker system disposed within the housing and supported by a speaker support. A bubble sound source may be defined by the speaker support, the speaker diaphragm, an anterior end of the housing, the elastic membrane, and the end cap. The housing, end piece, and a posterior surface of the speaker support may form a sealed enclosure. The sound system may include a tuning pipe disposed between the sealed enclosure and the bubble sound source. A Helmholtz resonator may be disposed anteriorly of the speaker system. Multiple sound system may be assembled to form a cluster. The cluster may be defined by the vertices of regular polyhedron. The sound systems may be controlled to maintain the speaker systems within acceptable thermal limits.
H04R 1/44 - Adaptation particulière pour usage sous l'eau, p.ex. pour hydrophone
H04R 1/02 - Boîtiers; Meubles; Montages à l'intérieur de ceux-ci
H04R 9/02 - Transducteurs du type à bobine mobile, à lame mobile ou à fil mobile - Détails
G10K 11/172 - Procédés ou dispositifs de protection contre le bruit ou les autres ondes acoustiques ou pour amortir ceux-ci, en général utilisant des effets de résonance
H04R 29/00 - Dispositifs de contrôle; Dispositifs de tests
G01V 1/133 - Production d'énergie sismique en utilisant des fluides comme moyens d'entraînement hydrauliques, p.ex. en utilisant des fluides à haute pression
A connector comprising a contact, a plunger, and a spring activated seal is provided. The contact is positioned within the housing and configured to transmit at least one of an electrical signal and an optical signal between the connector and a secondary device. The plunger is positioned within the housing and in communication with the contact. The spring activated seal comprises a flexible portion and a spring configured to urge the flexible portion to contact the housing and at least one of the plunger and a contact of the secondary device to form a fluid tight seal therebetween.
A submersible sound system may include a housing, an end piece, an elastic membrane, an end cap affixed to the elastic membrane, and a subwoofer speaker system disposed within the housing and supported by a speaker support. A bubble sound source may be defined by the speaker support, the speaker diaphragm, an anterior end of the housing, the elastic membrane, and the end cap. The housing, end piece, and a posterior surface of the speaker support may form a sealed enclosure. The sound system may include a tuning pipe disposed between the sealed enclosure and the bubble sound source. A Helmholtz resonator may be disposed anteriorly of the speaker system. Multiple sound system may be assembled to form a cluster. The cluster may be defined by the vertices of regular polyhedron. The sound systems may be controlled to maintain the speaker systems within acceptable thermal limits.
H04R 1/44 - Adaptation particulière pour usage sous l'eau, p.ex. pour hydrophone
H04R 1/02 - Boîtiers; Meubles; Montages à l'intérieur de ceux-ci
H04R 9/02 - Transducteurs du type à bobine mobile, à lame mobile ou à fil mobile - Détails
G01V 1/133 - Production d'énergie sismique en utilisant des fluides comme moyens d'entraînement hydrauliques, p.ex. en utilisant des fluides à haute pression
G10K 11/172 - Procédés ou dispositifs de protection contre le bruit ou les autres ondes acoustiques ou pour amortir ceux-ci, en général utilisant des effets de résonance
H04R 29/00 - Dispositifs de contrôle; Dispositifs de tests
A low frequency underwater sound source for use in an autonomous underwater vehicle includes a cylindrical body having a front portion, a rear portion, a cylindrical piezo-ceramic ring transducer disposed therebetween, and a resonant pipe surrounding the transducer. A gap is formed between an inner surface of the pipe and an outer surface of the transducer. Alternatively, the sound source includes a cylindrical body, a front fairing disposed forward of the cylindrical body, a plurality of metal rods connecting the front of the cylindrical body and the rear of the fairing, a spherical piezo-ceramic transducer disposed between the cylindrical body and the fairing, and a resonant pipe mounted at the front end of the cylindrical body. The spherical transducer is disposed within a cavity within the resonant pipe. A cylindrical orifice is formed between the front end of the resonant pipe and the rear of the fairing.
B06B 1/06 - Procédés ou appareils pour produire des vibrations mécaniques de fréquence infrasonore, sonore ou ultrasonore utilisant l'énergie électrique fonctionnant par effet piézo-électrique ou par électrostriction
G10K 9/122 - Dispositifs dans lesquels le son est produit par la vibration d'un diaphragme ou un élément analogue, p.ex. cornes de brume, avertisseurs de véhicule ou vibreurs fonctionnant électriquement utilisant des moyens d'entraînement piézo-électriques
A submersible sound system may include a housing, an end piece, an elastic membrane, an end cap affixed to the elastic membrane, and a subwoofer speaker system disposed within the housing and supported by a speaker support. A bubble sound source may be defined by the speaker support, the speaker diaphragm, an anterior end of the housing, the elastic membrane, and the end cap. The housing, end piece, and a posterior surface of the speaker support may form a sealed enclosure. The sound system may include a tuning pipe disposed between the sealed enclosure and the bubble sound source. A Helmholtz resonator may be disposed anteriorly of the speaker system. Multiple sound system may be assembled to form a cluster. The cluster may be defined by the vertices of regular polyhedron. The sound systems may be controlled to maintain the speaker systems within acceptable thermal limits.
H04R 29/00 - Dispositifs de contrôle; Dispositifs de tests
G10K 11/172 - Procédés ou dispositifs de protection contre le bruit ou les autres ondes acoustiques ou pour amortir ceux-ci, en général utilisant des effets de résonance
G01V 1/133 - Production d'énergie sismique en utilisant des fluides comme moyens d'entraînement hydrauliques, p.ex. en utilisant des fluides à haute pression
A redundant memory for use with an instrument arranged to acquire and store data while underwater. Such an instrument comprises a main housing which contains instrument electronics that acquires and may process data received from one or more sensors, with a primary memory located within the main housing and arranged to store at least some of the acquired and/or processed data, and a secondary memory which stores a copy of the data stored in the primary memory. The instrumentation may be arranged to write data to the primary and secondary memories contemporaneously in either a burst or continuous mode, or with primary memory backed up to secondary memory periodically and/or in response to the occurrence of a triggering event. The instrument may comprise a second housing within which the secondary memory is located. The main and second housings may be contained within a common enclosure.
G06F 1/16 - TRAITEMENT ÉLECTRIQUE DE DONNÉES NUMÉRIQUES - Détails non couverts par les groupes et - Détails ou dispositions de structure
H05K 5/02 - Enveloppes, coffrets ou tiroirs pour appareils électriques - Détails
G06F 13/28 - Gestion de demandes d'interconnexion ou de transfert pour l'accès au bus d'entrée/sortie utilisant le transfert par rafale, p.ex. acces direct à la mémoire, vol de cycle
16.
DYNAMICALLY VARIABLE EXTRACTION DISTANCE BETWEEN EXTRACTION VOLUME AND SAMPLE SURFACE
The present disclosure is directed to a system, method, and apparatus configured to dynamically vary an extraction distance between an extraction volume and a sample surface.
A diffusion system to improve the efficiency, accuracy, and consistency of testing the release rate of an active ingredient in semisolid form through a membrane in between a dosage lid and a cell cap mounted on a cell in which a mixer is placed to mix the receptor medium in the cell as the semisolid diffuses through the membrane. The cell can be placed in a heating system to heat the samples. The cell has a sampling arm through which samples of the receptor medium can be extracted without opening the cell cap and dosage lid. The mixer may be cylindrical and may occupy a large surface area of the cell. The mixer may have grooves and other irregularities to increase turbulence while mixing. The system can be automated using an automated sampling and collection station.
G01N 13/00 - Recherche des effets de surface ou de couche limite, p.ex. pouvoir mouillant; Recherche des effets de diffusion; Analyse des matériaux en déterminant les effets superficiels, limites ou de diffusion
G01N 35/10 - Dispositifs pour transférer les échantillons vers, dans ou à partir de l'appareil d'analyse, p.ex. dispositifs d'aspiration, dispositifs d'injection
G01N 35/00 - Analyse automatique non limitée à des procédés ou à des matériaux spécifiés dans un seul des groupes ; Manipulation de matériaux à cet effet
An acoustic transducer and method of generating acoustic transmit and receive beams is disclosed. The system includes a plurality of transducer elements arranged to form an array, where the elements are electrically connected into groups which operate at the same electrical phase, where the phases of adjacent groups of elements differ by between about 50 and 70 degrees and a beamforming circuit where the transmit and receive signals are operated with appropriate phase shifts to maintain the between about 50 and 70 degrees phase difference between adjacent groups. The resulting transducer generates transmit and receive beams that are nominally inclined less than about 30 degrees from a planar normal axis of the array.
G01S 15/60 - Systèmes de détermination de la trajectoire ou de la vitesse; Systèmes de détermination du sens d'un mouvement dans lesquels l'émetteur et le récepteur sont montés sur l'objet mobile, p.ex. pour déterminer la vitesse par rapport au sol, l'angle de dérive, le trajet au sol
G10K 11/34 - Procédés ou dispositifs pour transmettre, conduire ou diriger le son pour focaliser ou pour diriger le son, p.ex. balayage par commande électrique de systèmes de transducteurs, p.ex. en dirigeant un faisceau acoustique
G01S 15/89 - Systèmes sonar, spécialement adaptés à des applications spécifiques pour la cartographie ou la représentation
19.
Low-frequency broadband sound source for underwater navigation and communication
An underwater sound source includes an acoustical driver, a controller of the acoustical driver, and a resonant tube acoustically coupled to the acoustical driver. The resonant tube has a pair of slotted portions, in which each slotted portion is disposed along the length of the resonant tube at a location corresponding to a node of a harmonic of the resonant tube. The sound system is configured to emit an output signal within a bandwidth defined by a dual resonance characteristic of the resonator tube. The sound source may also include a pair of coaxial tubular sleeves disposed around the resonant tube, each sleeve configured to slidably cover one of the slotted portions, and tune the resonance frequency of the tube over a wide range. At a high frequency end, when slots are uncovered, the frequency response of the resonant tube obtains a dual-resonant form.
G10K 9/08 - Dispositifs dans lesquels le son est produit par la vibration d'un diaphragme ou un élément analogue, p.ex. cornes de brume, avertisseurs de véhicule ou vibreurs actionnés par de l'eau ou par d'autres liquides
G01V 1/137 - Production d'énergie sismique en utilisant des fluides comme moyens d'entraînement hydrauliques, p.ex. en utilisant des fluides à haute pression dont les fluides s'échappent du générateur d'une manière pulsée, p.ex. pour produire des explosions
G01V 1/133 - Production d'énergie sismique en utilisant des fluides comme moyens d'entraînement hydrauliques, p.ex. en utilisant des fluides à haute pression
G10K 11/172 - Procédés ou dispositifs de protection contre le bruit ou les autres ondes acoustiques ou pour amortir ceux-ci, en général utilisant des effets de résonance
B06B 1/20 - Procédés ou appareils pour produire des vibrations mécaniques de fréquence infrasonore, sonore ou ultrasonore utilisant un fluide vibrant
H04R 1/28 - Supports de transducteurs ou enceintes conçus pour réponse de fréquence spécifique; Enceintes de transducteurs modifiées au moyen d'impédances mécaniques ou acoustiques, p.ex. résonateur, moyen d'amortissement
H04R 1/34 - Dispositions pour obtenir la fréquence désirée ou les caractéristiques directionnelles pour obtenir la caractéristique directionnelle désirée uniquement en utilisant un seul transducteur avec des moyens réfléchissant, diffractant, dirigeant ou guidant des sons
H04R 1/44 - Adaptation particulière pour usage sous l'eau, p.ex. pour hydrophone
H04R 3/04 - Circuits pour transducteurs pour corriger la fréquence de réponse
In one aspect, an acoustic full-duplex communication system includes a transmitter array having at least two transmitters. The transmitters are positioned along an axis of maximum transmission and are separated by about half of a wavelength of a transmission frequency band. The transmitters transmit waveforms of opposing polarity that mutually interfere in a plane orthogonal to the transmission axis. The system includes a receiver array having at least one receiver in the orthogonal plane. In a second aspect, an underwater acoustic full-duplex communication system includes a transmitter and two receivers. The receivers are symmetrically positioned about an axis, separated by about half of a wavelength of a transmission frequency band, and equidistant from the transmitter. The receivers are connected in opposing polarity. Either aspect may include an adaptive filter to improve cancellation of transmitter originated near field transmissions received by the one or more receivers.
H04B 11/00 - Systèmes de transmission utilisant des ondes ultrasonores, sonores ou infrasonores
H04B 13/02 - Systèmes de transmission dans lesquels le milieu de propagation est constitué par la terre ou une grande masse d'eau la recouvrant, p.ex. télégraphie par le sol
21.
Low-frequency sound source for underwater sound propagation research and calibration
A variable inductor includes a three-limbed core first section having an inductor winding wound about a medial limb. An air gap is disposed in the medial limb. The inductor includes a second section having a control limb in which a first end of the control limb is connected to a first outer limb of the three-limbed core, and a second end of the control limb is connected to a second outer limb of the three-limbed core. A control winding is wound about the control limb. The inductor may be used in a control circuit to control a power signal driving a transducer. The inductor may be controlled by a signal derived from a comparison of a voltage phase of a power signal to the transducer and a phase of the current traversing the transducer. A system may include the control circuit, including the variable inductor, and the transducer.
H04R 3/02 - Circuits pour transducteurs pour empêcher la réaction acoustique
B06B 1/02 - Procédés ou appareils pour produire des vibrations mécaniques de fréquence infrasonore, sonore ou ultrasonore utilisant l'énergie électrique
H01F 21/00 - Inductances ou transformateurs variables du type pour signaux
The present invention provides a system for providing a stress reduction apparatus for a ceramic electrical penetrator or pin in a subsea environment. More specifically, the present invention provides a deformable translatable seat in an annular pocket that prevents the transfer of shear forces from a shell or fixture to a ceramic electrical penetrator or pin. The present invention provides a relatively soft metal seat that conforms to the profile of the shoulder of a mating electrical penetrator or pin and deforms to reduce or eliminate concentrated bearing stresses. The deformable translatable seat may also shift and deform within the annular pocket to relieve shearing stresses exerted on the electrical penetrator or pin by the shell or fixture.
H01R 13/52 - Boîtiers protégés contre la poussière, les projections, les éclaboussures, l'eau ou les flammes
H01R 13/523 - Boîtiers protégés contre la poussière, les projections, les éclaboussures, l'eau ou les flammes pour l'emploi sous l'eau
H02G 3/22 - Installations de câbles ou de lignes à travers les murs, les sols ou les plafonds, p.ex. dans les immeubles
H02G 9/02 - Installations de lignes ou de câbles électriques dans ou sur la terre ou sur l'eau tendus directement dans ou sur le sol, lit de rivière ou fond de mer; Leur recouvrement, p.ex. tuiles
H02G 15/007 - Dispositifs pour atténuer la contrainte mécanique
Messages on controller area network (CAN) buses are communicated over subsea links to subsea devices that also require electrical power to function. These subsea devices may be disposed kilometers away from the signal source where electrical signal and power transmission is impractical. The present invention provides a subsea power-over-fiber CAN bus converter for converting CAN bus electrical input and electrical power input into optical signals for transmission over a fiber optic cable for conversion into CAN bus electrical output and electrical power output for use by a subsea sensor or other subsea device. The subsea power-over-fiber CAN bus converter of the present invention is may comprise a flying lead harness that has a first connector end, a second connector end, a first optical converter module, a second optical converter module, and a fiber optic cable disposed between the first and second optical converter modules.
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
H04B 10/50 - 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
An apparatus and a method for a trace oxygen sensor is configured with a floating cathode that has a capability to detect part-per-billion (ppb) level or less of oxygen in a gas background. An electrolyte reservoir can supply electrolyte when electrolyte level is low. An electrolyte reservoir may be connected to the main cell along with a protection electrode.
G01N 27/413 - Cellules de concentration utilisant des électrolytes liquides
G01N 27/404 - Cellules avec l'anode, la cathode et l'électrolyte de la cellule du même côté d'une membrane perméable qui les sépare du fluide de l'échantillon
G01N 27/403 - Ensembles de cellules et d'électrodes
Messages on controller area network (CAN) buses are communicated over subsea links. Messages are sent as electrical or optical signals. The present invention provides a subsea CAN BUS electronic distribution unit (EDU) for transmitting, receiving, converting, and routing electrical or optical signals sent over a subsea CAN BUS network. The CAN BUS EDU of the present invention is contained within a single housing and combines the functions of transmitting, receiving, converting, and routing electrical or optical signals sent over a subsea CAN BUS network that would typically be handled by multiple devices.
H04B 10/50 - 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
H04L 12/44 - Réseaux en étoile ou réseaux arborescents
H04B 13/02 - Systèmes de transmission dans lesquels le milieu de propagation est constitué par la terre ou une grande masse d'eau la recouvrant, p.ex. télégraphie par le sol
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
The light projection assemblies and opacity monitors described in this specification have an integrating sphere with an input aperture, an output aperture, and a spherical-shaped internal chamber. An LED source is located external to the chamber at the input aperture. A light baffle is located within the chamber at the output aperture. A condenser lens is located external to the chamber at the output aperture.
A sound source including a first gas filled underwater resonator, a second gas filled underwater resonator connected to the first resonator, where the second resonator comprises a Helmholtz resonator, and at least one excitation member configured to excite the first resonator and the second resonator is disclosed. The first resonator is permanently tuned to produce a first resonant frequency upon excitation by the at least one excitation member and the second resonator is permanently tuned to produce a second resonant frequency upon excitation by the at least one excitation member. The first resonant frequency is different from the second resonant frequency.
G01V 1/137 - Production d'énergie sismique en utilisant des fluides comme moyens d'entraînement hydrauliques, p.ex. en utilisant des fluides à haute pression dont les fluides s'échappent du générateur d'une manière pulsée, p.ex. pour produire des explosions
G01V 1/133 - Production d'énergie sismique en utilisant des fluides comme moyens d'entraînement hydrauliques, p.ex. en utilisant des fluides à haute pression
28.
System, method, and apparatus for subsea optical to electrical distribution
The present invention provides systems, methods, and apparatuses for subsea optical to electrical distribution. The present invention comprises one or more routing units adapted to convert optical signals to electrical signals and route the converted electrical signals to an appropriate end device. The routing unit is a compact device that may be installed without the use of heavy equipment.
A penetrator device has an outer housing of non-conductive, insulating material having a through bore, at least one conductive pin formed in one or two parts extending through the housing and having a first end portion and a second end portion extending out of the respective first and second ends of the housing, a first cladding layer bonded over the first end portion of the pin to form a first bonded assembly, a second cladding layer bonded over the second end portion of the pin to form a second bonded assembly, and the material of the first and second cladding layer comprising a corrosion resistant conductive material different from the pin material.
The present invention provides a fire-resistant electrical feedthrough system for use in offshore and top-side electrical submersible pump (“ESP”) installations. The fire-resistant electrical feedthrough system includes a minimum of two, redundant pressure barriers, in order to provide for safe operation and increased system reliability. The primary barrier is typically embedded within the wellhead equipment structure, while the secondary barrier is typically externally mounted.
H01R 13/52 - Boîtiers protégés contre la poussière, les projections, les éclaboussures, l'eau ou les flammes
H01R 13/527 - Boîtiers protégés contre les flammes
H01R 13/41 - Fixation d'une manière non démontable, p.ex. par moulage, rivetage par engagement à frottement dans une rondelle isolante, un panneau ou une base
H01R 13/523 - Boîtiers protégés contre la poussière, les projections, les éclaboussures, l'eau ou les flammes pour l'emploi sous l'eau
A small aperture acoustic velocity sensor and a method for velocity measurement are disclosed. In one aspect, the disclosed technology uses spatially-shifted sub-arrays for projection and/or hydrophone receipt and cross-correlation of successive pulses to improve correlation and reduce bias. The spatial shift can be created physically by selection of groups of elements or virtually by weighting the contributions of fixed sub-arrays. Spatial modulation can be used to form a projected signal and measured spatial phase of slope across the set of sub-arrays allows correction of both long- and short-term errors. The disclosed technology uses spatial and/or temporal interpolation.
G01S 15/00 - Systèmes utilisant la réflexion ou la reradiation d'ondes acoustiques, p.ex. systèmes sonar
G01S 15/60 - Systèmes de détermination de la trajectoire ou de la vitesse; Systèmes de détermination du sens d'un mouvement dans lesquels l'émetteur et le récepteur sont montés sur l'objet mobile, p.ex. pour déterminer la vitesse par rapport au sol, l'angle de dérive, le trajet au sol
G01S 7/52 - DÉTERMINATION DE LA DIRECTION PAR RADIO; RADIO-NAVIGATION; DÉTERMINATION DE LA DISTANCE OU DE LA VITESSE EN UTILISANT DES ONDES RADIO; LOCALISATION OU DÉTECTION DE LA PRÉSENCE EN UTILISANT LA RÉFLEXION OU LA RERADIATION D'ONDES RADIO; DISPOSITIONS ANALOGUES UTILISANT D'AUTRES ONDES - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe
A sound source includes a first gas filled underwater resonator, a second gas filled underwater resonator connected to the first resonator and at least one excitation member configured to excite the first gas filled underwater resonator and the second gas filled underwater resonator, where the first gas filled underwater resonator is permanently tuned to produce a first resonant frequency upon excitation by the at least one excitation member, where the gas filled underwater second resonator is permanently tuned to produce a second resonant frequency upon excitation by the at least one excitation member, and where the first resonant frequency is different from the second resonant frequency.
G01V 1/133 - Production d'énergie sismique en utilisant des fluides comme moyens d'entraînement hydrauliques, p.ex. en utilisant des fluides à haute pression
G01V 1/38 - Séismologie; Prospection ou détection sismique ou acoustique spécialement adaptées aux zones recouvertes d'eau
33.
Wet-mateable connector unit with gas pressure relief
A wet-mateable connector unit for use in vertical or substantially vertical orientation in a subsea gas well has an outer shell and a movable wall inside the shell surrounding a pressure compensated chamber containing dielectric fluid. The chamber wall is exposed to ambient pressure outside the connector unit. At least one relief valve is mounted in the connector unit and has an inlet in communication with the upper end of the chamber and an outlet in communication with the external environment surrounding the connector unit. The relief valve opens to release gas from the upper end of the chamber when the differential pressure between the chamber and external environment exceeds a predetermined valve cracking pressure. A plurality of relief valves may be provided.
E21B 34/08 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits sensibles à l'écoulement ou à la pression du fluide obtenu
H01R 13/523 - Boîtiers protégés contre la poussière, les projections, les éclaboussures, l'eau ou les flammes pour l'emploi sous l'eau
34.
Digital seismic source signature near-field hydrophone
A near-field hydrophone is disclosed. The near-field hydrophone includes a housing, a piezoelectric element configured to produce an analog signal in response to an acoustic signal generated by the release of compressed air into water, an analog circuit coupled to the piezoelectric element, wherein the analog circuit is configured to receive the analog signal and to produce a conditioned analog signal, an analog-to-digital converter configured to receive the conditioned analog signal and to produce a digitized form of the conditioned analog signal, and a processor coupled to a memory circuit and to the analog-to-digital converter, wherein the processor is configured to control the operation of the analog-to-digital converter and to provide a digitized serial communication output corresponding to the digitized form of the conditioned analog signal. The piezoelectric element, the analog circuit, the analog-to-digital converter, the processor, and the memory circuit are located within the housing.
G01V 1/137 - Production d'énergie sismique en utilisant des fluides comme moyens d'entraînement hydrauliques, p.ex. en utilisant des fluides à haute pression dont les fluides s'échappent du générateur d'une manière pulsée, p.ex. pour produire des explosions
The present invention provides a ruggedized heavy duty source connector adapted for use on large air guns. The source connector comprises reinforcing fibers in the cable jacket that are anchored to the connector front shell, an external blast shield in place of a rear shell, and a fatigue resistant strain relief overmold.
The present invention generally relates to an inline pressure compensator that compensates for volumetric changes within Field-Assembled Cable Termination (FACT) structures when exposed to high pressures and extreme subsea depths by transferring a pressure compensating fluid into the internal cavity of the FACT. The present invention may comprise a flexible internal component and an outer shell-like component. The inner component may comprise two concentric rings of edge-welded bellows that are joined together and wrapped around inner components of the termination or of the inner portion of the outer component. The inner void in the bellows may be filled with pressure-compensating fluid. The pressure compensating fluid diffuses directly into the fluid-filled cavity of the termination assembly. The exterior component may comprise a housing adapted to protect the interior bellows component and provide for seawater to fill the space around the periphery of the bellows arrangement.
A sound source includes a first gas filled underwater resonator, a second gas filled underwater resonator connected to the first resonator and at least one excitation member configured to excite the first gas filled underwater resonator and the second gas filled underwater resonator, where the first gas filled underwater resonator is permanently tuned to produce a first resonant frequency upon excitation by the at least one excitation member, where the gas filled underwater second resonator is permanently tuned to produce a second resonant frequency upon excitation by the at least one excitation member, and where the first resonant frequency is different from the second resonant frequency.
G01V 1/133 - Production d'énergie sismique en utilisant des fluides comme moyens d'entraînement hydrauliques, p.ex. en utilisant des fluides à haute pression
38.
Isolated electrical connection assembly and method
An isolated electrical connection assembly having first and second conductive terminals of different conductive materials with a non-metallic, annular spacer sandwiched between opposing inner end faces of the terminals. The first terminal having a bore extending inwards from its inner end face, and a pin projects from the opposing inner end face of the second terminal, through a central opening in the spacer, and into the bore. The pin is releasably secured in the bore to provide electrical connection between the terminals. The interfaces between the inner end faces of the terminals and opposing faces of the spacer are sealed to isolate the connection between the second terminal pin and the first terminal bore.
H01R 13/22 - Contacts pour coopération par aboutage
H01R 13/52 - Boîtiers protégés contre la poussière, les projections, les éclaboussures, l'eau ou les flammes
H01R 13/03 - Contacts caractérisés par le matériau, p.ex. matériaux de plaquage ou de revêtement
H01R 43/26 - Appareils ou procédés spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation de connecteurs de lignes ou de collecteurs de courant ou pour relier les conducteurs électriques pour engager ou séparer les deux pièces d'un dispositif de couplage
39.
Detection and correction of window moisture condensation
Condensation mitigation devices and condensation prediction/detection techniques configured to prevent window condensation with reduced power consumption are disclosed. A condensation mitigation device is configured to predict and/or detect a window condensation event. The condensation mitigation device is powered on only during such an event, and the condensation mitigation device is powered off afterwards to conserve power.
H05B 1/00 - CHAUFFAGE ÉLECTRIQUE; SOURCES LUMINEUSES ÉLECTRIQUES NON PRÉVUES AILLEURS; CIRCUITS POUR SOURCES LUMINEUSES ÉLECTRIQUES, EN GÉNÉRAL - Détails des dispositifs de chauffage électrique
H05B 3/84 - Dispositions pour le chauffage spécialement adaptées à des surfaces transparentes ou réfléchissantes, p.ex. pour désembuer ou dégivrer des fenêtres, des miroirs ou des pare-brise de véhicules
G01N 21/15 - Prévention de la souillure des éléments du système optique ou de l'obstruction du chemin lumineux
A winch is employed for deploying a probe to a precise depth within a water column for making and recording physical measurement within such water column. More particularly, the winch rapidly unspools a line from an underway vessel, while maintaining minimal but constant line tension, as a probe, tethered to such line, descends within the water column in a “near” free-fall to a predetermined depth and then stops. The line lacks means for communicating its depth to the winch. The probe achieves a predictable descent behavior, even though it is tethered by a line to a winch onboard an underway vessel of unknown velocity and in variable weather conditions. The predictable descent behavior is achieved by maintaining a minimal constant tension on the line within a narrow range. The descent behavior of a probe in “near” free-fall has sufficient predictability to construct an algorithm to correlate descent time with depth. The predictability is sufficient to reduce the risk of collision between the probe and the water bottom to an acceptable level.
B66D 1/50 - Dispositifs de commande automatiques pour maintenir une tension prédéterminée de la corde, du câble ou de la chaîne, p.ex. pour des cordes ou des câbles de remorqueur, des chaînes d'ancre; Commande de la tension des câbles de treuils de touage ou d'amarrage
B63B 27/08 - Aménagement des équipements de bord pour l'embarquement ou le débarquement des cargaisons ou des passagers des treuils
41.
Subsea connector with data collection and communication system and method
A subsea data collection and communication system is installed at a subsea interconnect point or subsea connector used for communication between subsea electrical, optical or hybrid electro-optical cables. The data collection and communication system is configured to collect system performance data such as voltage, current, optical pressure and the like from signals carried by the wires or fibers in cables connected to the connector unit, and may also collect data on environmental conditions from sensors installed in or on the connector unit, such as temperature, pressure, or sea water salinity sensors, and the like. The collected data is transmitted to a remote monitoring station or local hub for further processing to detect potential faults or performance degradation either at periodic intervals or on demand, using bi-directional Ethernet, CANBUS, a carrier frequency system over the cable power lines, optical signal over optical fiber, or wireless communication links over short distances.
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
E21B 33/038 - Connecteurs utilisés sur les têtes de puits, p.ex. pour relier l'obturateur anti-éruption et la colonne montante dans l'eau
G06Q 20/32 - Architectures, schémas ou protocoles de paiement caractérisés par l'emploi de dispositifs spécifiques utilisant des dispositifs sans fil
G02B 6/38 - Moyens de couplage mécaniques ayant des moyens d'assemblage fibre à fibre
G02B 6/42 - Couplage de guides de lumière avec des éléments opto-électroniques
G02B 6/44 - Structures mécaniques pour assurer la résistance à la traction et la protection externe des fibres, p.ex. câbles de transmission optique
G02B 6/50 - Installation souterraine ou sous l'eau; Installation à travers des tubes, des conduits ou des canalisations
42.
Non-pressure compensated, wet-mateable plug for feedthrough and other subsea systems
The invention provides a submersible or harsh environment connector for use with electrical, optical or electro-optical cables having first and second connector units which are releasably mateable and that are not pressure compensated. The invention provides a wet-mate without pressure balancing system for making a subsea wet-mate connection. The invention uses a reservoir of fluid and a mechanism energized by mating, such as by a spring, to push that fluid into a small mated connection, discharging an equivalent volume of seawater and creating electrical and/or optical continuity. One-way or back-flow prevent valves ensure there is no return flow of seawater. Typical fluids would be dielectric oil or optical gel.
A system and method for forming acoustic beams is disclosed. One embodiment is an acoustic system configured to generate a plurality of beams non-orthogonal to a transducer array simultaneously with a vertical acoustic beam orthogonal to the array. The acoustic system includes a plurality of transducer elements arranged to form a two-dimensional array and electrically connected into rows in a first dimension and columns in a second dimension.
Underwater vehicles may fix their position from GPS at the surface of the water and use bottom track for dead reckoning once it has descended to within tracking range of the bottom of a body of water. This disclosure describes a method and system for navigation through the water through depths where GPS is not available using current profiles from sonar systems including acoustic Doppler current profilers (ADCP). This extrapolation of earth referenced current profiles can provide a way to estimate vehicle motion below the surface before the vehicle reaches the bottom. Once bottom track is achieved, the corrected reference for vehicle motion improves the vehicle position estimate. A Kalman filter updates vehicle position and current profile estimates during descent, and the bottom track when the bottom comes within range to enable navigation of underwater vehicles.
G01C 21/12 - Navigation; Instruments de navigation non prévus dans les groupes en utilisant des mesures de la vitesse ou de l'accélération exécutées à bord de l'objet navigant; Navigation à l'estime
G01P 5/00 - Mesure de la vitesse des fluides, p.ex. d'un courant atmosphérique; Mesure de la vitesse de corps, p.ex. navires, aéronefs, par rapport à des fluides
G01P 5/24 - Mesure de la vitesse des fluides, p.ex. d'un courant atmosphérique; Mesure de la vitesse de corps, p.ex. navires, aéronefs, par rapport à des fluides en mesurant l'influence directe du courant de fluide sur les propriétés d'une onde acoustique de détection
G01S 15/60 - Systèmes de détermination de la trajectoire ou de la vitesse; Systèmes de détermination du sens d'un mouvement dans lesquels l'émetteur et le récepteur sont montés sur l'objet mobile, p.ex. pour déterminer la vitesse par rapport au sol, l'angle de dérive, le trajet au sol
G01P 3/26 - Dispositifs caractérisés par l'emploi de fluides
An underwater rolling seal connector assembly has releasably mateable connector units with one or more rolling seals mounted in front faces of units. The rolling seals are rotatable back and forth between a closed position sealing one or more chambers within the respective units which contain one or more contacts and an open position in which bores through the seals are open to allow contacts in one unit to pass through the seal openings and engage contact in the other unit. A shell of one connector unit has inwardly facing cam formations and each rolling seal has outwardly directed eccentric rotators configured for engagement with respective cam formations on mating and de-mating of the connector units, whereby travel of the respective rotators along the respective cam formations during mating and de-mating rotates the rolling seals into the open and closed positions, respectively.
Methods and apparatus determining a position of a submersible vehicle within a body of water are provided. A method comprises determining an initial position of the vehicle while the vehicle is at or near a water surface. The method further comprises coupling the vehicle and a base node to a weight and determining a position of the base node once the base node and vehicle have reached the floor of the body of water using acoustic modems of the vehicle and a surface vessel to aid in calculating the position as they descend, and acoustically transferring the at rest position on the seafloor from the vehicle to the node. The method further comprises decoupling the vehicle from the node and weight and determining a position of the vehicle based on the position of the base node and acoustic signals exchanged between acoustic modems of the vehicle and the base node.
G01S 5/00 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de position; Localisation par coordination de plusieurs déterminations de distance
G01S 5/18 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de position; Localisation par coordination de plusieurs déterminations de distance utilisant des ondes ultrasonores, sonores ou infrasonores
G01S 3/808 - Systèmes pour déterminer une direction ou une déviation par rapport à une direction prédéterminée utilisant des transducteurs espacés et mesurant la différence de phase ou de temps entre les signaux provenant de ces transducteurs, c. à d. systèmes à différence de parcours
G01S 15/74 - Systèmes utilisant la reradiation d'ondes acoustiques, p.ex. pour l'identification ami–ennemi
A handheld current profiler (HCP) system and method for wading discharge measurement is disclosed. The disclosed HCP has dual capabilities. It serves as a single point current meter that can measure velocity in as little as 3 cm of water. It becomes a current profiler with an additional near surface velocity measurement cell in water about 15 cm or deeper. The HCP has a surface tracking acoustic beam that measures the water level. Thus, in most cases, no manual measurements for water depth and transducer depth are required because both depths may be measured acoustically. In addition, the disclosed HCP can have a very small transducer with a form factor which can lead to minimum flow disturbance.
G01S 1/72 - Radiophares ou systèmes de balisage émettant des signaux ayant une ou des caractéristiques pouvant être détectées par des récepteurs non directionnels et définissant des directions, situations ou lignes de position déterminées par rapport aux émetteu; Récepteurs travaillant avec ces systèmes utilisant des ondes ultrasonores, sonores ou infrasonores
G01C 13/00 - Géodésie spécialement adaptée à l'eau libre, p.ex. à la mer, aux lacs, aux rivières ou aux canaux
G01S 15/08 - Systèmes pour mesurer la distance uniquement
G01S 15/58 - Systèmes de détermination de la trajectoire ou de la vitesse; Systèmes de détermination du sens d'un mouvement
G01S 15/60 - Systèmes de détermination de la trajectoire ou de la vitesse; Systèmes de détermination du sens d'un mouvement dans lesquels l'émetteur et le récepteur sont montés sur l'objet mobile, p.ex. pour déterminer la vitesse par rapport au sol, l'angle de dérive, le trajet au sol
A laser ablation system and methods are disclosed for performing material analysis. The laser ablation system includes a sample chamber which holds and encloses a sample material to be ablated; a laser source that produces a laser beam which is directed into the sample chamber to a surface of the sample material to cause laser ablation; a laser measuring device which is physically attached to the sample chamber to measure a power/energy value of the laser beam; and a material analyzing module that is coupled to the sample chamber to receive the ablated material from laser ablation of the sample material.
H01J 49/04 - Dispositions pour introduire ou extraire les échantillons devant être analysés, p.ex. fermetures étanches au vide; Dispositions pour le réglage externe des composants électronoptiques ou ionoptiques
49.
Harsh environment connector with rotating end seal assembly
A harsh environment connector has first and second connector units which each have at least one contact chamber in which at least one contact is located. Seal assemblies at the front ends of the respective contact chambers include seal members which rotate about the longitudinal axis of the connector as the units are mated to allow contacts of one connector unit to pass through aligned seal openings and into engagement with contacts in the other connector unit. Each seal assembly has a seal clamp member and the seal and seal clamp members are relatively rotatable during mating and de-mating between a first position when the units are unmated in which the seal openings are clamped shut by the seal clamp member and a second position when the units are mated in which clamp portions of the seal clamp member are offset from the seal openings.
An apparatus to automatically refill a gas laser is disclosed. The apparatus includes a computing device coupled to a memory. The memory storing instructions that when executed by the computing device cause the computing device to monitor a time elapsed since a last recorded gas refill and when a predetermined time interval is reached since the last recorded gas refill, effectuate a gas refill process to refill the gas laser with gas from a gas supply coupled to the gas laser by automatically controlling the gas laser and the gas supply; and upon completing the gas refill process, record a time stamp of the completed gas refill process. A method and system to automatically refill a gas laser also are disclosed.
H01S 3/22 - Lasers, c. à d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet caractérisés par le matériau utilisé comme milieu actif à gaz
H01S 3/036 - Moyens pour obtenir ou maintenir la pression désirée du gaz à l'intérieur du tube, p.ex. au moyen d'un getter ou d'une réactivation; Moyens pour faire circuler le gaz, p.ex. pour uniformiser la pression à l'intérieur du tube
H01S 3/225 - Lasers, c. à d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet caractérisés par le matériau utilisé comme milieu actif à gaz le gaz actif étant polyatomique, c. à d. contenant plusieurs atomes comprenant un excimer ou un exciplex
The present invention provides optical connectors and optical feedthrough systems that can be mated and unmated in a harsh environment, such as underwater, and is particularly concerned with a method and apparatus for securing and sealing an optical feedthrough or connector from the surrounding turbid environment.
A coriolis flow sensor is disclosed. The coriolis flow sensors comprises a first substrate layer, a second substrate layer, and a third substrate layer. The first substrate layer comprises a first wall. The second substrate layer comprises a second wall. The third substrate layer is disposed between the first and second substrate layers in a stacked configuration. The third substrate layer defines a flow path. The first and second walls of the respective first and second substrates and the flow path defined by the third substrate layer define a first flow channel configured to receive a fluid therethrough. A first actuator is configured to generate vibrations in the first flow channel. The first flow channel is mechanically moveable.
An underwater rolling seal connector assembly has releasably mateable plug and receptacle units with one or more rolling seals mounted in front faces of receptacle and plug units. The rolling seals are rotatable back and forth between a closed position sealing one or more chambers within the respective units which contain one or more contacts and an open position in which bores through the seals are open to allow contacts in one unit to pass through the seal openings and engage contact in the other unit. Actuators automatically rotate the rolling seals into the open position during mating and back into the closed position on de-mating. At least one actuator assisting device is located in at least one of the units and associated with the rolling seal in that unit to bias the seal back to the closed position during de-mating.
There is described an apparatus for monitoring a conductive fluid conduit arranged to carry a fluid stream. The apparatus comprises a power supply, a plurality of electrical contact points connected to the fluid conduit, a voltage measurement device, and a processor. The power supply has a reference mode of operation and a sample mode of operation. In the reference mode of operation the power supply is operable to supply an alternating electric current through the fluid conduit at a high frequency such that the current is confined near the surface of the fluid conduit due to the skin effect. In the sample mode of operation the power supply is operable to supply an electric current through a full thickness of the fluid conduit. The voltage measurement device is operable to measure the voltage between pairs of said electrical contact points so as to obtain reference values of electrical resistance of the fluid conduit when the power supply is in the reference mode of operation and so as to obtain sample values of electrical resistance of the fluid conduit when the power supply is in the sample mode of operation. The processor is operable to modify the sample values of electrical resistance based on the corresponding reference values of electrical resistance so as to compensate for temperature variations.
There is also described a corresponding method for monitoring a conductive fluid conduit arranged to carry a fluid stream.
In various embodiments, a multilayer jacket for a seismic streamer is disclosed. The multilayer jacket comprises an outer layer comprising a water-resistant and wear-resistant material. The multilayer jacket further comprises an inner layer comprising a hydrocarbon impermeable material.
B29C 47/00 - Moulage par extrusion, c. à d. en exprimant la matière à mouler dans une matrice ou une filière qui lui donne la forme désirée; Appareils à cet effet (moulage par extrusion-soufflage B29C 49/04)
B29C 47/02 - en incorporant des parties ou des couches préformées, p.ex. moulage par extrusion autour d'inserts ou sur des objets à recouvrir
In various embodiments, a flexible lid seal detector is disclosed. The flexible lid seal detector comprises a compression body. A compression rim extends from a distal end of the compression body. The compression rim comprises an outer perimeter and inner perimeter. The inner perimeter defines a recessed lid deflection area. The compression rim is configured to apply a force to a flexible lid coupled to a container. A sensor is coupled to the compression body and positioned to detect the deflection of the flexible lid in response to the force applied to the flexible lid. The sensor is configured to detect an amount of deflection of the flexible lid within the recessed lid deflection area.
G01M 3/00 - Examen de l'étanchéité des structures ou ouvrages vis-à-vis d'un fluide
G01M 3/36 - 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 détection des variations dans les dimensions de la structure à tester
One or more insulated conductive wire assemblies are incorporated in a pressure balanced, oil-filled (PBOF) hose. Each conductive wire assembly has a pair of conductive wires each having an insulation layer, an insulating material surrounding the insulated wires, and an outer insulating layer surrounding the insulating material. The insulating material may be selected to have a dielectric constant substantially matching the dielectric constant of the oil in the PBOF hose, so that the insulated pair of conductors perform in the same way both before and after the assembly is submerged in oil in the jumper hose. One or more parameters of the conductive wire assembly are selected such that the assembly has a predetermined impedance when submerged in oil within the PBOF hose.
H01B 13/06 - Isolation des conducteurs ou des câbles
H01B 11/00 - Câbles ou conducteurs de communication
H01B 7/285 - Protection contre les dommages provoqués par des facteurs extérieurs, p.ex. gaines ou armatures par l'humidité, la corrosion, les attaques chimiques ou les conditions atmosphériques empêchant la pénétration de fluides dans les conducteurs ou les câbles par remplissage total ou partiel d'interstices du câble
H01B 11/12 - Dispositions pour obtenir des caractéristiques de transmission déterminées
58.
Passive acoustic bearing estimation via ultra short baseline wideband methods
In various embodiments, a passive bearing detector is disclosed. The passive bearing detector comprises a plurality of hydrophones. The plurality of hydrophones is arranged in a three-dimensional geometry. The three-dimensional geometry exposes each of the plurality of hydrophones to an ambient aquatic acoustic environment. The passive bearing detector further comprises a processor electrically coupled to the plurality of hydrophones. The processor is configured to determine a direction of arrival of an unknown broadband acoustic signal received by the plurality of hydrophones based on the phase difference of the unknown broadband acoustic signal at each of the plurality of hydrophones.
G01S 3/808 - Systèmes pour déterminer une direction ou une déviation par rapport à une direction prédéterminée utilisant des transducteurs espacés et mesurant la différence de phase ou de temps entre les signaux provenant de ces transducteurs, c. à d. systèmes à différence de parcours
G01S 5/20 - Position de source déterminée par plusieurs goniomètres espacés
G01S 5/00 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de position; Localisation par coordination de plusieurs déterminations de distance
In various embodiments, an engine crankshaft is disclosed. The engine crankshaft comprises a rear bearing journal. The rear bearing journal has an output end. The rear bearing journal defines a substantially cylindrical cavity extending from the output end into the rear bearing journal. The engine crankshaft may further comprise at least one torque sensor operatively coupled to the rear bearing journal. The at least one torque sensor is configured to generate a torque signal corresponding to a torque exerted on the rear bearing journal. The torque exerted on the rear bearing journal is indicative of a torque output of an engine.
F02B 77/08 - Dispositifs de sécurité, d'indication ou de surveillance
G01L 5/00 - Appareils ou procédés pour la mesure des forces, du travail, de la puissance mécanique ou du couple, spécialement adaptés à des fins spécifiques
A system and a method for determining one or more wave characteristics from a moving platform are disclosed. A sonar system, such as an Acoustic Doppler Current Profiler, can profile the water motion relative to the platform, and an earth reference can determine a measure of the platform motion relative to a fixed earth reference. Both water profile and earth reference measurements can be synergistically employed to compensate for motion of the platform. Directional wave spectra and non-directional wave spectrum can be computed and translated via linear wave theory to surface height spectra and used to calculate characteristics, such as significant wave height, peak period, and peak direction.
An electrical connector in the form of a socket assembly defining a plurality of arcuate leaf contacts adapted for insertion of a pin contact therein. The socket assembly comprises an elongate socket core having the leaf contacts formed at a distal end thereof, and a substantially cylindrical hood surrounding the leaf contacts. In one embodiment of the invention, the hood is provided with structure for limiting the radial outward deflection of the leaf contacts when the electrical connector is subjected to shock forces. The limiting structure can be a stepped inner cylindrical sidewall of the hood, defining a reduced inner diameter portion of the hood surrounding at least a distal portion of each leaf contact.
A marine air gun generates an acoustic signal in water, for example, during a marine seismic survey. The marine air gun includes digital electronic circuitry. The digital electronic circuitry may control an actuator of the marine air gun, digitize and store data from sensors located on or near the marine air gun, send and/or receive digital communications, store and/or output electrical energy, and/or perform other functions. A marine seismic source system that includes multiple air gun clusters may have a separate digital communication link between a command center and each air gun cluster. Each communication link may provide power and digital communication between the command center and one of the air gun clusters.
G01V 1/137 - Production d'énergie sismique en utilisant des fluides comme moyens d'entraînement hydrauliques, p.ex. en utilisant des fluides à haute pression dont les fluides s'échappent du générateur d'une manière pulsée, p.ex. pour produire des explosions
G01V 1/133 - Production d'énergie sismique en utilisant des fluides comme moyens d'entraînement hydrauliques, p.ex. en utilisant des fluides à haute pression
G01V 1/22 - Transmission des signaux sismiques aux appareils d'enregistrement ou de traitement
H04B 14/00 - Systèmes de transmission non caractérisés par le milieu utilisé pour la transmission
An electrical penetrator assembly has a ceramic housing with a through bore, a first electrical conductor extending through at least part of the bore and terminating and having an outer end outside the bore and a second end, and a second electrical conductor having a first end in electrical communication with the second end of the first conductor and an outer end. The second end of the first conductor and the first end of the second conductor are in electrical communication and at least one of the conductors is movable relative to the other conductor to accommodate expansion and contraction as a result of temperature variations, and first and second seals extend between respective ends of the ceramic housing and the first and second conductor, respectively.
A system and method of remote sound speed measurement are disclosed. In one embodiment, a system for estimating a sound speed comprises a plurality of transducers configured to i) transmit a first acoustic signal from a first location, ii) receive a first scattered signal at a second location, iii) receive a second scattered signal at a third location, and iv) receive a third scattered signal at a fourth location; and a microprocessor configured to i) estimate a travel time based on at least one of the first, second, or third scattered signals, ii) generate a cross-correlation signal comprising a product of at least two of the first, second, and third scattered signals, iii) estimate a travel time difference based on at least the cross-correlation signal, and iv) estimate a sound speed based on at least the estimated travel time and the estimated travel time difference.
G01S 3/80 - Radiogoniomètres pour déterminer la direction d'où proviennent des ondes infrasonores, sonores, ultrasonores ou électromagnétiques ou des émissions de particules sans caractéristiques de direction utilisant des ondes ultrasonores, sonores ou infrasonores
G01S 5/22 - Position de source déterminée par coordination de plusieurs lignes de position définies par des mesures de différence de parcours
An apparatus for testing flexible containers traveling along a production line is disclosed. The apparatus includes a compression assembly in line with the production line. The compression assembly has a flexible section for directly contacting and applying a predetermined compression over a predetermined distance to a plurality of containers as they travel by an inspection station. The apparatus also includes a sensor assembly provided in direct contact with a container while a container is in the inspection station. The sensor assembly is arranged to sense the force applied by the compression assembly to the container. The sensor assembly generates a signal that varies in accordance with the internal pressure of the containers as they pass by the sensor assembly. The apparatus further includes a processing circuit configured to receive the signals from the sensor assembly and to determine the acceptability of the internal pressure of the containers.
G01B 11/16 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la déformation dans un solide, p.ex. indicateur optique de déformation
G01N 3/08 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression
G01M 3/32 - 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 pour récipients, p.ex. radiateurs
G01M 3/36 - 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 détection des variations dans les dimensions de la structure à tester
67.
Methods and systems for configuring sensor acquisition based on pressure steps
Technologies are provided for underwater measurements. A system includes an underwater vessels including: a plurality of sensors disposed thereon for measuring underwater properties; and a programmable controller configured to selectively activate the plurality of sensors based at least in part on underwater pressure. A user may program at what pressure ranges certain sensors are activated to measure selected properties, and may also program the ascent/descent rate of the underwater vessel, which is correlated with the underwater pressure.
The invention is a chromatography apparatus which comprises at least one capillary column, which has a coil assembly of column material and a small diameter wire coated with an electrically insulating high temperature material encased within a high temperature sheath. The small diameter wire is at least one electrically conductive element co-linear with the column material. Also provided is means for directly resistively heating the at least one capillary column, and means for controlling the temperature of the capillary column. Additionally, the apparatus includes an oxygen gas containing inlet, a hydrogen inlet, an analyte port and a flame region, oxygen delivery means for delivering oxygen through the oxygen inlet to the flame region, a hydrogen and analyte delivery system for delivering hydrogen and analyte to the flame region, and a detector arranged to detect flame emission.
Each feed-through pin of a multiple-phase, high voltage plug-pin connector comprises at least one conductor having a first insulation layer extending along at least part of its length, the insulation layer having an enlarged, load-bearing portion of non-circular cross-section having oppositely directed projections, configured for engagement in a correspondingly shaped bore portion of the connector shell. The load-bearing portions may be of a rhomboidal cross sectional shape with rounded corners, with a first diagonal length shorter than a second diagonal length. The pins are spaced around the central longitudinal axis of the shell with the shorter diagonal of each load-bearing portion extending radially and the oppositely directed projections extending into the radial spaces in the shell between adjacent pins. This arrangement allows space within a limited diameter feed through hole for the enlarged, load-bearing shoulder portions of the insulation layer.
A sonar system and method of operating a sonar system are disclosed. In one embodiment, the sonar system comprises an array of transducers and a multiplexer configurable into a plurality of states. In one embodiment, the multiplexer, when in a first state, electrically couples a plurality of connections with the plurality of transducers via a first mapping and, in a second state, electrically couples the plurality of connections with the plurality of transducers via a second mapping.
A subsea connector unit with an integrated, bi-directional electrical to optical (EO) media converter is provided which has a first end configured for connection to standard subsea electrical cable connector unit and a second end joined to a subsea optical or electro-optical ethernet jumper cable. The EO media converter has one or more electrical input/output (I/O) junctions which communicate with electrical signal conductors in a connected electrical ethernet cable and one or more optical I/O junctions which are connected to one or more optical fibers extending from the subsea jumper cable. Electrical input signals received at the electrical I/O junctions are converted into corresponding optical signals provided at the optical I/O junctions for transmission along the subsea jumper cable, and optical input signals received from the jumper cable are converted to electrical signals at the electrical I/O junctions for output to the electrical cable.
G02B 6/00 - OPTIQUE ÉLÉMENTS, SYSTÈMES OU APPAREILS OPTIQUES - Détails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p.ex. des moyens de couplage
A sound source includes a bubble configured to be filled with a gas. The sound source also includes an actuator configured to perturb the gas within the bubble by changing the volume of the gas without adding gas to or removing gas from the bubble. The sound source also includes a processing circuit configured to provide a control signal to the actuator to cause the actuator to perturb the gas within the bubble at a frequency defined by the control signal.
A marine air gun generates an acoustic signal in water, for example, during a marine seismic survey. The marine air gun includes digital electronic circuitry. The digital electronic circuitry may control an actuator of the marine air gun, digitize and store data from sensors located on or near the marine air gun, send and/or receive digital communications, store and/or output electrical energy, and/or perform other functions. A marine seismic source system that includes multiple air gun clusters may have a separate digital communication link between a command center and each air gun cluster. Each communication link may provide power and digital communication between the command center and one of the air gun clusters.
G01V 1/137 - Production d'énergie sismique en utilisant des fluides comme moyens d'entraînement hydrauliques, p.ex. en utilisant des fluides à haute pression dont les fluides s'échappent du générateur d'une manière pulsée, p.ex. pour produire des explosions
74.
Electrical contact for shock-resistant electrical connector
An electrical connector in the form of a socket assembly defining a plurality of arcuate leaf contacts adapted for insertion of a pin contact therein. The socket assembly comprises an elongate socket core having the leaf contacts formed at a distal end thereof, and a substantially cylindrical hood surrounding the leaf contacts. In one embodiment of the invention, the hood is provided with structure for limiting the radial outward deflection of the leaf contacts when the electrical connector is subjected to shock forces. The limiting structure can be a stepped inner cylindrical sidewall of the hood, defining a reduced inner diameter portion of the hood surrounding at least a distal portion of each leaf contact.
To provide a protective coat on a refrigerated sample collector for a corrosive environment a unitary frame includes a support unit with condenser and evaporator coils mounted to the support unit and an orifice connecting the condenser and evaporator coils. The evaporator coils, condenser coils and restrictor are powder coated after being connected, whereby an effective seal is provided for the restrictor, condenser coils and evaporator coils after they are assembled to the support. The unitary frame can be easily removed or connected as a unit to the sample collector. A peristaltic pump may be used for drawing at least one sample into the refrigerated sample collector and depositing said sample into at least one sample bottle. The peristaltic pump may include contoured tube guides to reduce movement of the peristaltic pump as a roller paddle rotates.
A sound source comprises a bubble configured to be filled with a gas, an actuator configured to perturb the gas within the bubble, and a processing circuit configured to provide a control signal to the actuator to cause the actuator to perturb the gas within the bubble at a frequency defined by the control signal.
G10K 9/10 - Dispositifs dans lesquels le son est produit par la vibration d'un diaphragme ou un élément analogue, p.ex. cornes de brume, avertisseurs de véhicule ou vibreurs actionnés par des moyens mécaniques uniquement
G01V 1/04 - Production d'énergie sismique - Détails
A sound source includes a tubular resonator configured to be filled with a gas. The exterior of the resonator includes rigid and elastomeric portions. The interior of the resonator includes a first volume and a second volume. The volumes are separated by a rigid tubular wall containing at least one orifice. The at least one orifice enables a flow of gas between the volumes. The resonator also includes at least one rigid tubular member configured to move along the rigid tubular wall. The position of the at least one rigid tubular member regulates at least one dimension of the path between the volumes. The sound source also includes a volume velocity actuator disposed within the resonator. The sound source also includes a processing circuit configured to provide a control signal to cause the volume velocity actuator to perturb the gas within the resonator at a defined frequency.
Methods and apparatus determining a position of a submersible vehicle within a body of water are provided. A method comprises determining an initial position of the vehicle while the vehicle is at or near a water surface. The method further comprises coupling the vehicle and a base node to a weight and determining a position of the base node once the base node and vehicle have reached the floor of the body of water using acoustic modems of the vehicle and a surface vessel to aid in calculating the position as they descend, and acoustically transferring the at rest position on the seafloor from the vehicle to the node. The method further comprises decoupling the vehicle from the node and weight and determining a position of the vehicle based on the position of the base node and acoustic signals exchanged between acoustic modems of the vehicle and the base node.
G01S 3/80 - Radiogoniomètres pour déterminer la direction d'où proviennent des ondes infrasonores, sonores, ultrasonores ou électromagnétiques ou des émissions de particules sans caractéristiques de direction utilisant des ondes ultrasonores, sonores ou infrasonores
B63G 8/14 - Commande de l'assiette ou de la profondeur
G01S 5/00 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de position; Localisation par coordination de plusieurs déterminations de distance
G01S 3/808 - Systèmes pour déterminer une direction ou une déviation par rapport à une direction prédéterminée utilisant des transducteurs espacés et mesurant la différence de phase ou de temps entre les signaux provenant de ces transducteurs, c. à d. systèmes à différence de parcours
G01S 5/18 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de position; Localisation par coordination de plusieurs déterminations de distance utilisant des ondes ultrasonores, sonores ou infrasonores
G01S 15/74 - Systèmes utilisant la reradiation d'ondes acoustiques, p.ex. pour l'identification ami–ennemi
B65D 88/78 - Grands réceptacles pour utilisation dans ou sous l'eau
The present invention relates to streamer cables. One embodiment of the present invention relates to a method for preparing a streamer cable. The method may comprise retrofitting the streamer cable with a solid void-filler material, where the streamer cable was configured as a liquid-filled streamer cable. The retrofitting may comprise introducing a void-filler material into the streamer cable when the void-filler material is in a liquid state and curing or otherwise solidifying the void-filler material to a solid state. In another embodiment, the present invention relates to a streamer cable comprising an outer skin and-at least one sensor positioned within the outer skin. The streamer cable may also comprise a solid void-filler material positioned between the outer skin and the at least one sensor, wherein the solid void-filler material is coupled to the at least one sensor.
A system and method of range estimation are disclosed. In one embodiment, the method comprises transmitting beams through a medium towards a surface, receiving reflected signals from the surface, and estimating range to the surfaced based on the reflected signals and an estimate of sidelobe coupling of the beams.
A system and method of determining a magnetic field and magnetic compass calibration is disclosed. One embodiment is a method of determining a magnetic field vector, the method comprising storing, for each of a plurality of sensor orientations, one or more calibration components, determining, for a sensor orientation not included in the plurality of sensor orientations, a magnetic field vector and a gravity vector, iteratively estimating one or more calibration coefficients based on the stored components, the determined magnetic field vector, and the determined gravity vector, wherein the calibration coefficients are updated during each of a plurality of iterations, and determining a sensor-orientation-independent magnetic field vector based on at least one of the calibration coefficients.
A multiple layer conductor pin for a harsh environment connector or penetrator has a conductive shaft, an outer layer of non-conductive, insulating material extending along at least part of the length of the shaft, and an intermediate layer of conductive or semi-conductive material sandwiched between the outer layer and conductive shaft and bonded substantially void-free to the outer insulating layer.
An electrical penetrator assembly has a ceramic housing with a through bore, a first electrical conductor extending through a first end of the bore and terminating short of a second end of the bore and having an outer end engageable with a first cable, and a second electrical conductor extending through a second end of the bore and terminating short of the first end of the bore, the second conductor having an outer end engageable with a second cable. The conductors are in electrical communication at their inner ends and at least one of the conductors is movable relative to the other conductor to accommodate expansion and contraction as a result of temperature variations, and first and second seals extend between respective ends of the ceramic housing and the first and second conductor, respectively.
A submersible connector has releasably mateable plug and receptacle units. The plug unit has at least one electrical pin while the receptacle unit has at least one electrical socket module which receives a forward portion of the electrical pin when the units are mated. The pin is surrounded by semi-conductive seals and a conductive housing, while the socket module has a semi-conductive outer layer, and front seals of semi-conductive material on the pin and socket modules are in sealing engagement in the mated condition, isolating the pins from sea water exposure and forming a ground plane continuation at least from receptacle to plug in the mated condition and providing shielding from phase to phase interaction in a multiple pin and socket connector.
A system and a method for determining one or more wave characteristics from a moving platform are disclosed. A sonar system, such as an Acoustic Doppler Current Profiler, can profile the water motion relative to the platform, and an earth reference can determine a measure of the platform motion relative to a fixed earth reference. Both water profile and earth reference measurements can be synergistically employed to compensate for motion of the platform. Directional wave spectra and non-directional wave spectrum can be computed and translated via linear wave theory to surface height spectra and used to calculate characteristics, such as significant wave height, peak period, and peak direction.
A system and method of remote sound speed measurement are disclosed. In one embodiment, a system for estimating a sound speed comprises a plurality of transducers configured to i) transmit a first acoustic signal from a first location, ii) transmit a second acoustic signal at a second location, iii) receive a first reflected signal at a third location, and iv) receive a second reflected signal at a fourth location, the reflected signals comprising at least one echo from at least one of the acoustic signals; and a microprocessor configured to i) estimate a travel time based on at least the first or second reflected signals, ii) estimate a travel time difference based on at least the first and second reflected signals, and iii) estimate a sound speed based on at least the estimated travel time and estimated travel time difference.
A marine air gun generates an acoustic signal in water, for example, during a marine seismic survey. The marine air gun includes digital electronic circuitry. The digital electronic circuitry may control an actuator of the marine air gun, digitize and store data from sensors located on or near the marine air gun, send and/or receive digital communications, store and/or output electrical energy, and/or perform other functions. A marine seismic source system that includes multiple air gun clusters may have a separate digital communication link between a command center and each air gun cluster. Each communication link may provide power and digital communication between the command center and one of the air gun clusters.
G01V 1/137 - Production d'énergie sismique en utilisant des fluides comme moyens d'entraînement hydrauliques, p.ex. en utilisant des fluides à haute pression dont les fluides s'échappent du générateur d'une manière pulsée, p.ex. pour produire des explosions
A trans-configurable modular chromatograph assembly is provided with a core unit, at least one column module, and at least one detector module. The core unit includes a controller module having a first computer processing unit, an analogue to digital signal converter, and a thermally insulated enclosure. The enclosure includes a first heater member positioned to heat the thermally insulated first enclosure housing, a first analytes stream inlet, and a first analyte stream conduit. A temperature controller is programmed to maintain the thermally insulated first enclosure at a uniform temperature throughout an analysis. The at least one column module includes a computer processor, means for releasably securing the core unit to a column module, a capillary column, a capillary column heater member, and means for sensing and controlling the temperature of the capillary column. The capillary column has an analyte outlet member in fluid communication with at least one detector module. The at least one detector module has a computer processing unit, and an analogue to digital signal converter, means for releasably securing said core unit to the detector module. The detector module includes detector member within a thermally insulated enclosure.
The present invention relates to an autonomous underwater vehicle (“AUV”) for monitoring underwater fluid currents by detecting electrical currents induced by the flow of a conductive liquid through the Earth's magnetic field. More particularly, the present invention relates to the gathering of data related to underwater fluid currents and the control of AUV motion during data gathering.
The present invention relates to streamer cables. One embodiment of the present invention relates to a method for preparing a streamer cable. The method may comprise retrofitting the streamer cable with a solid void-filler material, where the streamer cable was configured as a liquid-filled streamer cable. The retrofitting may comprise introducing a void-filler material into the streamer cable when the void-filler material is in a liquid state and curing or otherwise solidifying the void-filler material to a solid state. In another embodiment, the present invention relates to a streamer cable comprising an outer skin and-at least one sensor positioned within the outer skin. The streamer cable may also comprise a solid void-filler material positioned between the outer skin and the at least one sensor, wherein the solid void-filler material is coupled to the at least one sensor.
A sonar system and method of operating a sonar system are disclosed. In one embodiment, the sonar system comprises an array of transducers and a multiplexer configurable into a plurality of states. In one embodiment, the multiplexer, when in a first state, electrically couples a plurality of connections with the plurality of transducers via a first mapping and, in a second state, electrically couples the plurality of connections with the plurality of transducers via a second mapping.
A system and method of range estimation are disclosed. In one embodiment, the method comprises transmitting beams through a medium towards a surface, receiving reflected signals from the surface, and estimating range to the surfaced based on the reflected signals and an estimate of sidelobe coupling of the beams.
A submersible connector has releasably mateable first and second connector units. The first connector unit has at least one electrical pin extending through a bore in a retaining base and projecting outward from the forward end of the base. The second connector unit has at least one electrical socket module which receives a forward portion of the electrical pin when the units are mated. A pin seal device is located in one of the connector units and has a through bore which engages part of the pin at least in the mated condition of the units. The seal device has a first and second seals in sealing engagement with portions of the connector units when mated, and a chamber between the seals extends over an opposing portion of the pin at least in the mated condition of the units.
Sample is applied to a chromatographic column containing shape stabilized packing and the liquid phase is pumped through the shape stabilized packing at a rate of flow greater than the standard rate of flow to obtain at least one of a target resolution and target time of run. Because of the improved resolution provided by the shape stabilized packing at higher rates of flow of solvent, the chromatographer can either obtain better resolution with a standard gradient or shorten the time of the run and reduce the amount of solvent needed by increasing the slope of the gradient.
A programmable liquid sampler for obtaining and digitally analyzing multiple, sequential samples in real time from an external source of liquid to be analyzed comprises an adaptive feedback algorithm for correcting sample weight measurements occasioned by vacuum delays. A sampling assembly receives and at least temporarily stores a sample drawn by suction through an air port that can also pressurize the chamber. A load cell determines sample mass through a logic controller that implements adaptive feedback by recognizing a desired target sample size, requesting an initial sample, and measuring the initial sample size. A variable scaling factor is derived by comparing the target sample size to said measured sample size and the subsequent requesting size is scaled. Samples can be stored in multiple compartments of a radial table that is indexed by the computer software for proper sample control.
First and second connector units each have a contact chamber with a front wall having an opening closed by a stopper. Seals in the respective openings surround and seal the stoppers prior to mating. The stopper in the first connector unit is retracted into the housing during mating while the front wall of second connector unit is retracted into its housing during mating, pushed back by the front wall of the first connector unit, separating the stoppers from the end wall openings and allowing communication between the contact chambers through a passageway defined by the aligned openings. The seals in the end walls seal the passageway during and after mating. A contact assembly in the first connector unit moves transversely into alignment with the passageway for contact with a corresponding fixed contact assembly in the second connector unit as the units move into mating engagement.
A system and method for forming acoustic beams is disclosed. One embodiment is an acoustic system configured to generate a plurality of beams non-orthogonal to a transducer array simultaneously with a vertical acoustic beam orthogonal to the array. The acoustic system includes a plurality of transducer elements arranged to form a two-dimensional array and electrically connected into rows in a first dimension and columns in a second dimension.
A liquid chromatographic system includes columns, column mounting fixtures to which the columns are mounted, a detector, a collector, a controller and a plurality of RFIDs. A first RFID communicates with the controller and cooperating RFIDs mounted to other components provide information such as the history of components, parameters and the like. They also receive information from sensors relating to the operation of the liquid chromatograph, store the information and transmit it. Moreover, the RFIDs may substitute for hard wiring in many applications and may enable a central computer to control several liquid chromatographic system.
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