| 摘要 |
<p>PURPOSE:To make it possible to obtain obstacle alarm function and burglar alarm function by one apparatus, by reading a state signal showing whether a vehicle is held to a driving state or a parking state and using radar in order to generating a burglar alarm order in the parking state. CONSTITUTION:A means generating state signal P showing whether a vehicle is held to a driving state or a parking state is provided and the state signal P is inputted to a signal processing circuit. For example, an ignition key IG-SW may be utilized in this state signal generating means. When the vehicle is held to the driving state and the measured distance of matter 0 by ultrasonic radar 1 is within a preset obstacle alarm distance range, an obstacle alarm order is generated. When the vehicle is held to the parking state and the measured distance of the matter 0 by the radar 1 is in a preset burglar alarm order distance range, a burglar alarm order is generated.</p> |
