摘要
分析了国内外车辆检测的现状和存在的问题,针对车辆检测环境设计了超声波车辆检测器,该系统由超声波探头、主机以及通讯三部分构成,超声波探头以STC12C5412AD为微处理器,利用LM1812超声波收发器检测车辆信息,主机采用STC12C32S2为微处理器,对来自探头的数据进行分析、处理和存储,并把数据发回中央处理机;经过对样机大量的数据测试表明,该检测器检测车流量准确率可达99%,平均车速检测准确率可达90%,车型(三种)分类的精度可达94%,实际运行表明,该检测器工作可靠,可用于检测行驶中机动车的车高、车长、车速等参数。
The paper analyses status quo and problems of vehicle detection sensor at home and abroad. Aimed at environment of vehicle detection, Ultrasonic Vehicle Detection Sensor has been designed. The vehicle detection sensor was made up by ultrasonic probe, host and Communication part, STC12C5412AD was chosen as main processor of the probe, LM1812 Ultrasonic Transceiver was used to test vehicle information, STC12C32S2 as microprocessor of the host, the data from each probe was analyzed, processed and stored, Finally the data was sent back to a central processing unit. Experiments show that the accuracy rate of traffic flow is up to 99%, the accuracy rate of average speed is up to 90%, model （3） is up to 94%, Many data for a moving vehicle as for instance, the heights, length, speed can be measured out reliably in application.
出处
《计算机测量与控制》
CSCD
北大核心
2011年第10期2542-2544,2548,共4页
Computer Measurement &Control
关键词
交通系统
超声波传感器
车辆检测器
探头
traffic system
ultrasonic sensor
vehicle detection sensor
probe
