상세정보
등록 RFID를 이용한 차량속도 측정방법, 차량속도 측정 가능한 RFID 판독장치 및 이를 이용한 차량정보 수집 시스템
- 출원번호
- 12475492 (2009.05.30)
- 공개번호
- 20100123558 (2010.05.20)
- 등록번호
- 8274371 (2012.09.25)
- 출원국
- 미국
- 협약과제
- 08MB2400, 인체통신 컨트롤러 SoC, 강성원
- 초록
- 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.
- KSP 제안 키워드
- Doppler Shift, RFID Tag, RFID reader, continuous wave(CW), identification information, reflected wave, vehicle identification, vehicle speed