| 摘要 |
<p>PURPOSE:To make it possible to take a crash preventive action at an appropriate time just before getting off a car by providing a control device which, when a detection signal is sent out from a door opening action detector, generates a control signal if any body is approaching the rearward of the car. CONSTITUTION:A door opening action detector 2 detects a driver's action of opening a car door, and, in the rear section of a car 1, a supersonic transmitter/ receiver 3 is installed, transmitting/receiving supersonic waves to/from the right rearward area of the car. Based on the signal from the detector 2, a signal processing circuit 4 outputs a drive signal to the transmitter/receiver 3, and also arithmetically processes a signal from the transmitter/receiver 3 which receives the waves reflected by an approaching car 6 in the rearward area. The result of signal processing by the processing circuit 4 is reported to the driver by an alarm 5, and the signal between the processing circuit 4 installed in the car room and the get-off detector 2 and the power are transmitted by a transmission device 5.</p> |
