| 摘要 |
PURPOSE:To prevent a theft crime beforehand by judging the unmanned state of an automobile when an opened door is closed after the engine stop and operating an on-vehicle mounted alarm device, judging the theft crime, when the door is opened afterwards. CONSTITUTION:When a stop detecting circuit 1 detects the stop of an engine and a door opening/closing detecting circuit 2 detects the closure of an opened door, it is judged by a control circuit 3 that the automobile is put into a unmanned state. After wards, if the detecting circuit 2 detects the opening of the door, the control circuit 3 judges a theft crime for the automobile, and outputs an alarm instruction into an on-vehicle mounted alarm device 4, and operates an alarm device 4a, and puts ON a lamp circuit 4b, and informs the people on the periphery. Thus, the theft crime can be prevented. |
