摘要
磁阻式传感器通过对汽车经过时引起的地磁扰动精确地转换为清晰的电压信号,利用该信号可对车长、车速等多种车辆信息进行监测,从而为交通监管部门提供实时交通信息,构建智能交通监测系统。本文介绍一种利用磁阻式传感器构建的无线智能交通监测系统WiST的系统构成、设计细节,并对此系统中的主要设备磁阻式传感器设备做了详细的介绍。半实物仿真以及实地测试证明,此系统可较好的识别汽车在时速40km/h-80km/h时的车速与车长。
When vehicle passes a magneto-resistive sensor, the produced massive magnetic changes caused by tiffs vehicle will be detected by a magneto-resistive sensor precisely and changed into voltage signal. By using this signal to monitor vehicle information such as length and speed, real-time traffic information can be used by traffic monitor administration and a Smart- traffic monitoring system can be realized. This paper introduces design details, and system construction of a wireless smart-traffic monitoring system using devices of magneto-resistive sensor which named WiST. System simulation and tests on the spot proves that this system can detects the speed and length of a vehicle whose speed range between 40km/h-80km/h.
出处
《数字技术与应用》
2010年第6期73-77,共5页
Digital Technology & Application
