US 12,216,177 B2
Motor control device and fault diagnosis method using same
Jin Seob Lee, Seoul (KR)
Assigned to LG INNOTEK CO., LTD., Seoul (KR)
Appl. No. 17/770,079
Filed by LG INNOTEK CO., LTD., Seoul (KR)
PCT Filed Nov. 4, 2020, PCT No. PCT/KR2020/015262
§ 371(c)(1), (2) Date Apr. 19, 2022,
PCT Pub. No. WO2021/101131, PCT Pub. Date May 27, 2021.
Claims priority of application No. 10-2019-0147740 (KR), filed on Nov. 18, 2019.
Prior Publication US 2022/0357412 A1, Nov. 10, 2022
Int. Cl. G01R 31/52 (2020.01)
CPC G01R 31/52 (2020.01) 9 Claims
OG exemplary drawing
 
1. A motor control device comprising:
a first reception circuit which receives a first input signal through a first signal line;
a second reception circuit which receives a second input signal through a second signal line;
a sensing circuit which is connected to the first signal line and the second signal line and outputs a state output value which varies according to whether the second signal line is opened; and
a micro control unit (MCU) which receives the state output value output from the sensing circuit and determines whether the second signal line is opened using the received state output value,
wherein the sensing circuit is not connected to the first signal line when the second signal line is opened and outputs “0” as the state output value, and is connected to the first signal line when the second signal line is not opened and outputs “1” as the state output value.