System and method for detecting sensor leakage

G - Physics – 01 – D

Patent

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G01D 18/00 (2006.01) G01R 31/04 (2006.01)

Patent

CA 2759235

A test system for testing a sensor system includes a high-impedance resistor for forming a voltage divider with any corrosion or foreign substance that might be present between a signal conductor and a ground conductor. While a voltage is applied across the voltage divider, the voltage can be measured across the high-impedance resistor for determining whether an undesirable amount of conductance exists between the signal wire and ground. The test system also includes switching means for switching between any number of signal wires of a system undergoing testing.

L'invention porte sur un système de test pour tester un système de capteur, lequel système de test comprend une résistance à haute impédance pour former un diviseur de tension avec une quelconque corrosion ou substance étrangère qui pourrait être présente entre un conducteur de signal et un conducteur de masse. Tandis qu'une tension est appliquée aux bornes du diviseur de tension, la tension peut être mesurée aux bornes de la résistance à haute impédance pour déterminer si une quantité indésirable de conductance existe ou non entre le fil de signal et la masse. Le système de test comprend également de moyens de commutation pour effectuer une commutation entre n'importe quel nombre de fils de signal d'un système subissant un test.

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