Abrégé

The invention relates to a method for self-discovery of an array of linear sensors, characterised in that each linear sensor and/or accessory is characterised by a unique identifier, and in that the method comprises at least the following steps: - for each sensor/accessory: ? identifying at least one upstream and/or downstream sensor/accessory, ? sending at least one local request to the identified sensor/accessory, ? sending a general request from the control unit to the plurality of sensors/accessories in the array, ? receiving at least one response to the at least one local request consisting of the unique identifier of the identified sensor/accessory, ? sending at least one response to the general request comprising the unique identifier of the identified sensor/accessory and the unique identifier of said sensor/accessory, and ? processing the at least one response to the general request received by the control unit making it possible to reconstitute the logical topology of the array according to the unique identifiers received.

Classes IPC  ?

• G01D 21/00 - Mesures ou tests non prévus ailleurs
• H04L 41/0853 - Récupération de la configuration du réseau; Suivi de l’historique de configuration du réseau en recueillant activement des informations de configuration ou en sauvegardant les informations de configuration
• H04L 41/12 - Découverte ou gestion des topologies de réseau
• H04L 12/403 - Réseaux à ligne bus avec commande centralisée, p.ex. interrogation

Abrégé

The invention relates to a detecting element (200) used for detecting leaks of electrically nonconductive liquid, in particular of hydrocarbons, as well as a detection cable (500) and a detection system (590-790) using such a detecting element. The detecting element (200) includes a detection member (114) made of a material, such as silicone, which inflates upon contact with said liquid and which is loaded with electrically conductive particles, such as to be conductive when not contaminated by said liquid, and such as to lose the conductivity thereof when inflating from contact with said liquid. Said detection member (114) is electrically connected to an electronic management module (210), which is arranged for detecting the presence of said liquid by noticing a decrease in the conductivity of said detection member, typically by means of an ohmic measurement. In a preferred embodiment, the detection cable includes four insulated conductive wires, one of which is embedded in the detection member (114) which is itself protected by an inflatable casing (116), which is also insulating and water-proof. Said four conductive wires (106, 110, 424, 424) are twisted around a fifth insulated conductive wire, the whole being surrounded by a perforated extruded sheath (116).

Classes IPC  ?

• G01M 3/04 - 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 de la présence du fluide à l'emplacement de la fuite
• G01M 3/16 - 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 de la présence du fluide à l'emplacement de la fuite en utilisant des moyens de détection électrique
• G01M 3/18 - 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 de la présence du fluide à l'emplacement de la fuite en utilisant des moyens de détection électrique pour soupapes

Abrégé

The invention relates to a communication module (100) for a sensor, designed to be used in a detection device, in particular for leakage detection, comprising a plurality of sensors, characterized in that it comprises: - at least one means (102, 104), termed upstream, for receiving an interrogation signal from upstream of said sensor and transporting it to the sensor, and receiving from said sensor a response signal and transporting it to upstream of the sensor; - at least one means (106), termed downstream, for transporting an interrogation signal to downstream of said sensor; - at least one means (110), termed sensor short-circuit, displaceable between an open position in which the upstream means (102) is linked to the sensor, and a closed position in which the upstream means (102) is disconnected from the sensor and connected to the downstream means (106); and - at least one means (112), termed control means, for controlling said short-circuit means (110) and arranged so as to maintain said short-circuit means (110): - in the open position until the emission of the response signal, and - in the closed position after said emission. It also relates to a sensor comprising such a module, a communication circuit comprising such modules, a detection device comprising such sensors and a method of communication used in such a device.

Classes IPC  ?

• G01M 3/16 - 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 de la présence du fluide à l'emplacement de la fuite en utilisant des moyens de détection électrique
• F17D 5/06 - Prévention, interception ou localisation des pertes utilisant des moyens électriques ou acoustiques
• G01D 21/00 - Mesures ou tests non prévus ailleurs
• 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