本程序，是汽车电子方面的到速雷达，利用收发同体超声波传感器，来测量车身里障碍物的距离，在1.5米内开始报警，在0.5米内连续报警。次项目能够在－40度到80度范围内不会误报。-this process, the electronic vehicle to the speed radar, using the same transceiver Ultrasonic sensors, Body Lane to measure the distance barrier, the 1.5-meter start alarm, 0.5 meters in a continuous alarm. Sub-item at -40 degrees to 80 degrees will not misinformation.