US 12,078,668 B2
Self validation of controller internal circuits
William C. Silliman, Liverpool, NY (US); Gilbert B. Hofsdal, Chittenango, NY (US); Daniel L. Waser, Brewerton, NY (US); and Aryn Shapiro, Liverpool, NY (US)
Assigned to CARRIER CORPORATION, Palm Beach Gardens, FL (US)
Appl. No. 15/734,722
Filed by CARRIER CORPORATION, Palm Beach Gardens, FL (US)
PCT Filed Sep. 9, 2019, PCT No. PCT/US2019/050123
§ 371(c)(1), (2) Date Dec. 3, 2020,
PCT Pub. No. WO2020/060782, PCT Pub. Date Mar. 26, 2020.
Claims priority of provisional application 62/732,290, filed on Sep. 17, 2018.
Prior Publication US 2021/0223302 A1, Jul. 22, 2021
Int. Cl. G01R 31/00 (2006.01); G01R 31/327 (2006.01)
CPC G01R 31/005 (2013.01) [G01R 31/3278 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A system for testing circuit operation, the system comprising:
a circuit comprising a power source, a switching element, and a load;
a processor;
an analog to digital converter configured to receive electrical values from a first node between the switching element and the load, the analog to digital convertor communicatively coupled to the processor, wherein the processor is configured to perform a diagnostic operation for the circuit comprising:
obtaining, from the analog to digital converter, first data associated with the load responsive to operating the switching element to turn ON, wherein the first data comprises electrical values from a second node, wherein the second node is between a first resistor connected to the first node and a second resistor connected to a reference voltage;
obtaining, from the analog to digital convertor, second data associated with an output of the switching element, wherein the second data comprises electrical values obtained at the output of the switching element; and
analyzing the first data and the second data to determine a fault condition for the circuit;
wherein analyzing the first data comprises comparing the electrical values from the second node to an operational range of values for the load;
wherein analyzing the second data comprises comparing the electrical values obtained at the output of the switching element to an operational range of values for the output of the switching element;
wherein the diagnostic operation for the circuit further comprises:
associating the fault condition with the load based on:
a determination that the electrical values from the second node are outside the operational range of values for the load; and
a determination that the electrical values obtained at the output of the switching element are inside the operational range of values for the output of the switching element.