CONTROL UNIT FOR VEHICLE
First Claim
1. A control unit for a vehicle, comprising:
- a redundancy circuit including;
a main power source line being supplied with electric power from a battery of the vehicle;
a back-up power source line performing a voltage compensation operation when a voltage of the main power source line is lower than a predetermined voltage, the back-up power source line being turned on when a predetermined period of time has elapsed after the main power source line is turned on, and the back-up power source line being turned off when a predetermined period of time has elapsed after the main power source line is turned off; and
a diode being disposed on the back-up power source line; and
a fault detector monitoring a voltage of a cathode of the diode, wherein the fault detector detects an open fault of the diode when the voltage of the cathode of the diode is lower than a predetermined threshold within the predetermined period of time after the main power source line is turned off.
1 Assignment
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Accused Products
Abstract
In a control unit for a vehicle, a redundancy circuit includes a main power source line, a back-up power source line, and a diode. The back-up power source line performs a voltage compensation operation when a voltage of the main power source line is lower than a predetermined voltage. The back-up power source line is turned on when a predetermined period of time has elapsed after the main power source line is turned on. The back-up power source line is turned off when a predetermined period of time has elapsed after the main power source line is turned off. The diode is disposed on the back-up power source line. The fault detector detects an open fault of the diode when a voltage of a cathode of the diode is lower than a predetermined threshold within the predetermined period of time after the main power source line is turned off.
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Citations
5 Claims
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1. A control unit for a vehicle, comprising:
a redundancy circuit including; a main power source line being supplied with electric power from a battery of the vehicle; a back-up power source line performing a voltage compensation operation when a voltage of the main power source line is lower than a predetermined voltage, the back-up power source line being turned on when a predetermined period of time has elapsed after the main power source line is turned on, and the back-up power source line being turned off when a predetermined period of time has elapsed after the main power source line is turned off; and a diode being disposed on the back-up power source line; and a fault detector monitoring a voltage of a cathode of the diode, wherein the fault detector detects an open fault of the diode when the voltage of the cathode of the diode is lower than a predetermined threshold within the predetermined period of time after the main power source line is turned off. - View Dependent Claims (2, 3, 4, 5)
Specification