一种适用于门式车辆污染监测仪的雷达测速方案实现

Implementation of a radar speed measurement scheme suitable for portal vehicle pollution monitor

在核辐射监测系统中,针对门式车辆污染监测仪采用通道红外测速方案而带来误报率高、短距离测量精度不够等制约因素,提出一种门式车辆污染监测仪的雷达测速方案。该方案中由红外开关时间变化量测速,改进为多普勒雷达测速,从雷达测速原理出发,以SRR189型雷达为据进行数据实测,参数配置后在实际车辆20km/h速度定速巡航开过测试区时,雷达测速仪反馈的实时速度为19.5km/h,实测数据准确度可达到97%。在满足车辆污染监测的同时对车辆实时速度进行测量,并根据速度数值大小对目标车辆进行管控,达到降低误报率,提高测试精度的效果。

In the nuclear radiation monitoring system,aiming at the restrictive factors such as high false alarm rate and short distance measurement accuracy caused by adopting channel infrared velocity measurement scheme for portal vehicle pollution monitoring instrument,a radar velocity measurement scheme for portal vehicle pollution monitoring instrument is proposed.In this scheme,the infrared switch time change speed measurement is improved to Doppler radar speed measurement.Starting from the principle of radar speed measurement,the SRR189 radar is used as the data measurement.After parameter configuration,when the actual vehicle cruises through the test area at a speed of 20km/h,the real-time feedback speed of the radar velodometer is 19.5km/h.The accuracy of measured data can reach 97%.In order to meet the requirements of vehicle pollution monitoring,the real-time vehicle speed is measured,and the target vehicle is controlled according to the speed value,so as to reduce the false alarm rate and improve the test accuracy.