Patent ID: 9638735
Date: 2017-05-02
CPC Classifications: G01D,G01R

Claim:
1. A method of detecting faults in excitation wiring, comprising: providing an excitation voltage from a power supply to at least a first sensor and a second sensor using excitation wiring that connects the power supply and at least the first and second sensors; determining a first high voltage and a first low voltage related to the excitation voltage using the first sensor; determining a second high voltage and a second low voltage related to the excitation voltage using the second sensor; determining a first sum of the first high voltage and the first low voltage; determining a second sum of the second high voltage and the second low voltage; determining whether each of the first sum and the second sum changes beyond a threshold amount during a first time interval; and after determining that each of the first sum and the second sum has changed beyond the threshold amount during the first time interval, providing an indication of a fault in the excitation wiring.