Patent ID: 11951968
Assignee: HYUNDAI MOBIS CO., LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 8:
9. An Electronic Parking Brake (EPB) control method comprising:
transmitting, by a first controller and a second controller, a state request signal for checking a state of a first EPB switch, the first EPB switch having a plurality of terminals including first to fourth terminals;
calculating, by the first controller, a first signal value by combining a first pair of signals received from the first and fourth terminals of the first EPB switch;
calculating, by the second controller, a second signal value by combining a second pair of signals received from the second and third terminals of the first EPB switch;
diagnosing, by the first controller, a state of the first EPB switch based on the first signal value;
diagnosing, by the second controllers, the state of the first EPB switch based on the second signal value;
determining whether any one of the first EPB switch, the first controller and the second controller has failed, based on the first and second signal values;
determining a location and cause of the failure; and
diagnosing a final state of the first EPB switch based on the determined location and cause of the failure,
wherein transmitting the state request signal comprises:
transmitting, by the first controller, a first pair of state request signals to the first and forth terminals, respectively, the first pair of state request signals being different from each other, and
transmitting, by the second controller, a second pair of the state request signals to the second and third terminals, respectively, the second pair of state request signals being different from each other.