| 摘要 |
PROBLEM TO BE SOLVED: To easily determine a sensor coming in its trouble by providing a sensor monitoring means for detecting a trouble in a sensor as well as monitoring the state of plural sensors, a means for storing the trouble in a sensor as defective sensor information and a means for outputting the information of the stored defective sensor. SOLUTION: The control part 17 of a car security unit 10 checks the state of each sensor and when abnormal state of a sensor is detected, this event is stored in a memory part 14 as defective sensor information. In addition, the control part 17 sounds a siren in a short time to notify the trouble in the sensor to the user. When it is desired to know the sensor just in trouble, by pressing a ballet switch 33, the control part 17 reads out defective sensor information from the memory part 14 and this defective sensor information is outputted to a head unit 1 via a bus line 6a. In the head unit 1, the defective sensor information received via the bus line 6a is indicated in a display part. Thus, the defective sensor can be easily specified. |
