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

Claim 16:
17. A method comprises:
receiving, through a first signal path, a first secondary signal from a first sensor and a built in test (BIT) signal, wherein the first signal path comprises a first multiplexer connected to a first filter;
receiving, through a second signal path, a second secondary signal from the first sensor and the BIT signal, wherein the second signal path comprises a second multiplexer connected to a second filter;
wherein the first signal path and the second signal path are connected to a third multiplexer;
wherein the third multiplexer is connected to a first analog to digital converter (ADC);
receiving, by a controller, an output signal from an output of the first ADC; and
determining, by the controller, 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.