Airbag control unit
First Claim
1. An airbag control unit that controls an operation of an airbag apparatus that is operated by use of a first power supply which is a vehicle battery or by use of a second power supply which is a backup power supply for the first power supply, the unit comprising:
- a voltage detection section that measures a voltage of the first power supply;
a timer that measures an elapsed time that the voltage measured by the voltage detection section falls in a preset voltage range;
a fault detection section that detects a failure of an other control unit which is different than the airbag control unit and which is operated by the first power supply; and
a recording section that records the elapsed time measured by the timer on a memory when the failure of the other control unit is detected.
1 Assignment
0 Petitions
Accused Products
Abstract
An airbag ECU includes a voltage detection section that detects a voltage in a power supply supplied to other control units (for example, front passenger seat occupancy sensing ECU). In addition, the airbag ECU includes a timer that measures an elapsed time after the voltage detected by the voltage detection section falls in a preset voltage range and a recording section that records the elapsed time measured by the timer on a memory when a failure of the other control units is detected.
-
Citations
10 Claims
-
1. An airbag control unit that controls an operation of an airbag apparatus that is operated by use of a first power supply which is a vehicle battery or by use of a second power supply which is a backup power supply for the first power supply, the unit comprising:
-
a voltage detection section that measures a voltage of the first power supply; a timer that measures an elapsed time that the voltage measured by the voltage detection section falls in a preset voltage range; a fault detection section that detects a failure of an other control unit which is different than the airbag control unit and which is operated by the first power supply; and a recording section that records the elapsed time measured by the timer on a memory when the failure of the other control unit is detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
Specification