METHOD FOR MEASURING SPEED OF A VEHICLE USING AN RFID, AN RFID READER, CAPABLE OF MEASURING THE SPEED OF VEHICLE, AND A SYSTEM FOR COLLECTING VEHICLE INFORMATION USING THE SAME, CAPABLE OF DETECTING A VEHICLE HAVING SPEED OVER 300KM

摘要

PURPOSE: A method for measuring speed of a vehicle using an RFID, an RFID reader, capable of measuring the speed of vehicle, and a system for collecting vehicle information using the same are provided to obtain the vehicle identification information and velocity information at the same time by using a Doppler shift.;CONSTITUTION: A vehicle speed is measured by an RFID reader. The RFID reader is installed in the road or in the roadside. A continuous wave is transmitted(S10). The reflected wave to the continuous wave is received from an RFID tag(S20). The RFID tag is attached to the vehicles receiving the continuous wave. A Doppler shift value is extracted from the continuous wave and the reflected wave(S30). The vehicle speed is calculated by using the Doppler shift value(S40).;COPYRIGHT KIPO 2010