摘要
讨论了高速公路车辆检测系统IDS。系统采用电磁感应原理 ,对振荡器的频率计数可以测量到车辆通过的基本信息 ,在本底频率确定后 ,过滤掉实际采样频率与其差值在设定测量精度范围内的信号 ,通过数学优化得到车辆信息 ,本系统具有简单可靠 。
In order to detect vehicles informations in expressway,a traffic IDS making use of the principle of electromagnetic induction is designed.Speed,length,go through time,and traffic capacity of vehicles can be detected by analyzing oscillator frequency.Measuring the difference between sampling frequency and background can get the vehicles informations.The system is superior in simple structure and a low cost.
出处
《测控技术》
CSCD
2001年第12期4-5,10,共3页
Measurement & Control Technology
