Method for measuring speed of vehicle using RFID, RFID reader for measuring speed of vehicle, and system for collecting vehicle information using the same
A technique for simultaneously acquiring vehicle identification information and speed information of an RFID tag-attached vehicle by calculating the vehicle speed by using a Doppler shift value extracted from transmission and reception signals between the RFID tag and the RFID reader is disclosed. A method for measuring a vehicle speed by using an RFID reader installed right up on the road or at the roadside includes: transmitting a continuous wave; receiving a reflected wave with respect to the continuous wave from an RFID tag attached to a vehicle which has received the continuous wave; extracting a Doppler shift value from the continuous wave and the reflected wave; and calculating the speed of the vehicle by using the Doppler shift value.
Electronics and Telecommunications Research Institute
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G08G G08G G01S G01S
inventional inventional inventional inventional
Kyung Soo Tae Young Seok Bong Byoung Gun In Gi Sung Weon Kyung Hwan Jung Bum
Kim Kang Hyun Choi Lim Kang Park Kim