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

Claim 10:
11. 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 determining, by the controller, the position measurement for the first sensor based on the first secondary signal, the second secondary signal, and the built in test signal comprises calculating the position, whereby

Position=(E1/BIT1_E1−E2/BIT1_E2)/(E1/BIT1_E1+E2/BIT1_E2),

wherein E1 comprises the first secondary signal, wherein E2 comprises the second secondary signal, wherein BIT1_E1 comprises the built in test signal traversing the first signal path, and wherein BIT1_E2 comprises the built in test signal traversing the second signal path.