Electronic parking brake control apparatus and method
AssigneeHyundai Mobis Co., Ltd.
InventorsSang Hyun Lee, Jung Hoon Kim
Life of this patent
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Abstract
An EPB (Electronic Parking Brake) control apparatus may include: a first EPB switch of an EPB; a first controller connected to two terminals among the plurality of terminals of the first EPB switch, and configured to calculate a first signal value by combining signals received from the two terminals, and diagnose the state of the first EPB switch according to the first signal value, and a second controller connected to the other two terminals among the plurality of terminals of the first EPB switch, and configured to calculate a second signal value by combining signals received from the two terminals, and diagnose the state of the first EPB switch according to the second signal value.
Claims18
An Electronic Parking Brake (EPB) control apparatus comprising:
- a first EPB switch having a plurality of terminals;
- a first controller connected to a first pair of the terminals of the first EPB switch, and configured to:
- combine a first pair of signals received from the first pair of the terminals, respectively;
- calculate a first signal value based on the combined first pair of signals;
- and
- diagnose a state of the first EPB switch based on the first signal value;
- and
- a second controller connected to a second pair of the terminals of the first EPB switch, and configured to:
- combine a second pair of signals received from the second pair of the terminals, respectively;
- calculate a second signal value based on the combined second pair of signals;
- and
- diagnose the state of the first EPB switch based on the second signal value,
- wherein the first controller is further configured to:
- determine whether any one of the first EPB switch, the first controller and the second controller exhibits a failure based on the first signal value;
- determine a location and cause of the failure;
- and
- diagnose a final state of the first EPB switch based on the location and cause of the failure,
- wherein the plurality of terminals of the first EPB switch includes first to fourth terminals,
- wherein the first controller is connected to the first and fourth terminals and configured to transmit a first state request signal to the first terminal,
- wherein the second controller is connected to the second and third terminals and configured to transmit a second state request signal to the second terminal, and transmit a third state request signal to the third terminal, the third state request signal being different from the second state request signal, and
- wherein the first controller is further configured to transmit a fourth state request signal to the fourth terminal, the fourth state request signal being different from the first state request signal.
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.
Dependencies are inferred from the claim text.