| 摘要 |
A vehicle is equipped with a Doppler microwave FMCW radar which points backwards and sideways towards the vehicle's blind spots. The modulation is at a ultrasonic frequency. If any other vehicle persistently within a suitable speed range is detected (eg whilst overtaking) a visual warning is given. If the equipped vehicle is turning (determined by sensing the steering wheel position or actuation of indicators) into the path of the overtaking vehicle, a further audible warning is also given. The transmitter/receiver and amplifier are be mounted on the rear-view mirror, with the rest of the processing being within the vehicle's body. A reversing aid is a modification, actuated by selection of reverse gear. <IMAGE> |
