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1. WO2011003852 - EXCITATION CIRCUIT FOR DC SENSORS

Publication Number WO/2011/003852
Publication Date 13.01.2011
International Application No. PCT/EP2010/059545
International Filing Date 05.07.2010
IPC
G01D 18/00 2006.01
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
18Testing or calibrating apparatus or arrangements provided for in groups G01D1/-G01D15/124
CPC
G01D 18/00
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
18Testing or calibrating of apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
G01R 31/08
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
08Locating faults in cables, transmission lines, or networks
G01R 31/50
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
50Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
Applicants
  • SAGEM DEFENSE SECURITE [FR]/[FR] (AllExceptUS)
  • GENESTE, Nicolas [FR]/[FR] (UsOnly)
  • ESTEVE, Gwenaël [FR]/[FR] (UsOnly)
Inventors
  • GENESTE, Nicolas
  • ESTEVE, Gwenaël
Agents
  • LAVIALLE, Bruno
Priority Data
09/0333807.07.2009FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) EXCITATION CIRCUIT FOR DC SENSORS
(FR) CIRCUIT D'EXCITATION DE CAPTEURS A COURANT CONTINU
Abstract
(EN)
Excitation circuit for at least one DC sensor, comprising a digital regulating computer linked to a main chain and to a regulating loop. The main chain comprises a digital/analog converter linked to the sensor by a direct amplified pathway and a reverse amplified pathway to emit sensor excitation signals having a differential-mode DC component. The regulating chain comprises an analog/digital converter linked to the amplified pathways, the circuit comprising a monitoring chain which is linked to the computer in parallel with the converter so as to emit signals as a function of an AC component of the signals tapped off the amplified pathways. The digital computer is devised so as to inject a common-mode sine wave onto the excitation signals and to analyse signals at the output of the monitoring chain and signals at the output of the analog/digital converter.
(FR)
Circuit d'excitation d'au moins un capteur à courant continu, comportant un calculateur numérique de régulation relié à une chaîne principale et à une boucle de régulation, la chaîne principale comprenant un convertisseur numérique / analogique relié au capteur par une voie amplifiée directe et une voie amplifiée inversée pour émettre des signaux d'excitation du capteur comportant une composante continue en mode différentiel, la chaîne de régulation comprenant un convertisseur analogique / numérique reliés aux voies amplifiées, le circuit comprenant une chaîne de surveillance qui est relié au calculateur en parallèle du convertisseur pour émettre des signaux en fonction d'une composante alternative des signaux prélevés sur les voies amplifiées, le calculateur numérique étant agencé pour injecter une sinusoïde en mode commun sur les signaux d'excitation et pour analyser des signaux en sortie de la chaîne de surveillance et des signaux en sortie du convertisseur analogique / numérique.
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