Patent ID: 11874139
Assignee: HAMILTON SUNDSTRAND CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 6:
7. A system comprising:
a signal conditioning circuit comprising:
a first signal path comprising a first multiplexer connected to a first filter, wherein the first signal path receives a first secondary signal from a first sensor and a built in test (BIT) signal;
a second signal path comprising a second multiplexer connected to a second filter, wherein the second signal path receives a second secondary signal from the first sensor and the BIT signal;
wherein the first signal path and the second signal path are connected to a third multiplexer; and
a first analog to digital converter (ADC) connected to an output of the third multiplexer; and

a controller connected to an output of the first ADC, wherein the controller is configured to: determine a position measurement for the first sensor based on the first secondary signal, the second secondary signal, and the BIT signal;
wherein the first signal path further receives an excitation signal into an input of the first multiplexer;
wherein the BIT signal comprises a square wave having a first frequency;
wherein excitation signal comprises a second frequency; and wherein the first frequency is equivalent to the second frequency.