[특허]Anti-collision vehicular radar system

Anti-collision vehicular radar system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01S-009/24
출원번호	US-0479854 (1974-06-17)
발명자 / 주소	Angwin James H. (Merrimack NH) Flannery John B. (Chelmsford MA)
출원인 / 주소	Pierson Merlin A. (Newton MA 04)
인용정보	피인용 횟수 : 89 인용 특허 : 0

초록 ▼

A radar system mounted on a vehicle and having an RF signal transmitted preferably in a confined beam in front of the vehicle and reflected from obstacles in the path of the beam to be reflected back to the vehicle. The system includes an asymmetrical magic tee which receives both the transmitted and received signals and provides a pair of Doppler frequency signals whose relative phase relationship determines whether the signal is an opening or closing Doppler signal. The signal employs a diplex Doppler detection scheme for providing both range and rate data. Under an imminent collision situation the system provides control signals to power means for pulsating the brakes of the vehicle to thereby avoid a collision. To minimize false target detections and to provide target discrimination, there is provided in this system both a range gated circuit for detecting normal closing rates and an amplitude gated circuit that is operable primarily for detecting fast closing rates such as may occur when a vehicle is stopped in the roadway. A ground speed detector is provided and has an output analog voltage which is usable as a gain control voltage for the range and amplitude gated circuits. The system is also provided with means for inhibiting braking action below a predetermined vehicle speed for use in slow traffic, and means for altering the braking action at speeds above a predetermined speed such as on the order of 35 MPH.

대표청구항 ▼

A vehicular radar system for automatically decelerating or stopping a vehicle to avoid a collision with an obstacle, said system comprising: transmitter means mounted on the vehicle for transmitting an electromagnetic signal in the path of motion of the vehicle, means for receiving the transmitted signal after reflection from an obstacle that may appear in the path of the vehicle, means responsive to said transmitted and received signals for providing a pair of doppler frequency signals the relative phase relationship therebetween being asymmetric and indicative of either a closing or opening situation between vehicle and obstacle, means for detecting vehicle speed relative to the ground and providing a signal corresponding to vehicle speed, at least a pair of gain-controlled means for receiving respectively the doppler frequency signals and amplifying said doppler frequency signals, means for coupling said vehicle speed signal to both said gain-controlled means for controlling the gain of both said means in accordance with said vehicle speed, and means responsive to the amplified doppler frequency signals from said at least one pair of gain-controlled means when said signals exceed a predetermined frequency for controlling the applying of the vehicle brakes.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
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연합인증

Anti-collision vehicular radar system 원문보기

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Anti-collision vehicular radar system 원문보기

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연구과제 타임라인

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이 특허를 인용한 특허 (89)

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