US 12,326,485 B2
Temperature compensation method for hall effect proximity sensors
Igor Giterman, Woodbridge, CT (US)
Assigned to HarcoSemco LLC, Branford, CT (US)
Filed by HarcoSemco LLC, Branford, CT (US)
Filed on Apr. 28, 2019, as Appl. No. 16/396,713.
Prior Publication US 2020/0341076 A1, Oct. 29, 2020
Int. Cl. G01R 33/00 (2006.01); B64D 45/00 (2006.01); G01D 3/036 (2006.01); G01D 5/14 (2006.01); G01R 33/07 (2006.01)
CPC G01R 33/0082 (2013.01) [B64D 45/0005 (2013.01); G01D 3/0365 (2013.01); G01D 5/145 (2013.01); G01R 33/072 (2013.01); G01R 33/0041 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A proximity sensor system, comprising:
a proximity sensor article, wherein the proximity sensor article includes a sensor sensing surface and wherein the proximity sensor article is configured to operate based, at least in part, on the hall-effect principal to sense the magnetic field of a target article located proximate the sensor sensing surface and generate an analog sensor signal;
a temperature compensation article including a plurality of temperature dependent resistors coupled to respective digital-to-analog converters, the digital-to-analog converters being configured to receive digital data responsive to predetermined threshold data, and the temperature compensation article being configured to generate a non-linear analog TCA signal responsive to the predetermined threshold data; and
a processor, wherein the processor is a comparator configured to use analog techniques to achieve proper operation of the proximity sensor article over a predetermined operating temperature range by comparing the analog sensor signal and the non-linear analog TCA signal to generate a processor output signal, wherein the processor output signal is at least one of a digital high signal and a digital low signal and is introduced into the aircraft system as a proximity signal.