Research on Speed Monitoring and Early Warning Method for Vehicles Based on RFID Sensor Tag

摘要

A new method was proposed for vehicle speed monitoring and early warning based on RFID sensor tag technology to realize real-time speed monitoring in high way.The principle of speed monitoring,the hardware and software of RFID sensor tag and reader network using GPRS technology were introduced in detail.Experimental results show that the actual velocity of vehicles can be acquired by on board RFID sensor tag,when the vehicle drives over the limited speed,the system can voice alarm to the driver.The identity information,actual speed and time of vehicle are read wirelessly by readers installed along the roadside,these messages can be upload to control center through GPRS network to monitor vehicle states,such as the position,average speed,the flow of transportation and so on.