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특허 상세정보

Passenger detection system

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B60R-021/00   
미국특허분류(USC) 701/045 ; 280/735
출원번호 US-0145309 (1998-08-31)
우선권정보 JP0238272 (1997-09-03)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Summerfield
인용정보 피인용 횟수 : 61  인용 특허 : 49
초록

A passenger detection system including a single antenna electrode mounted on a surface of a passenger seat in an automobile. An oscillator generates an AC current having a predetermined voltage amplitude that is transmitted to the antenna electrode to produce a minute electric field around the antenna electrode. An amplitude control circuit is used to control the voltage amplitude of the output signal from the oscillator. The electrical characteristics of an object on the passenger seat alter the current and phase of the signal in the antenna electrode. ...

대표
청구항

[ We claim:] [1.] A passenger detection system comprising:a seat,at least one antenna electrode mounted on a surface of the seat,an oscillation circuit for transmitting an alternating current output signal to the antenna electrode, thereby generating an electric field adjacent to the antenna electrode,a current detection circuit connected between the oscillation circuit and the antenna electrode for generating a current signal indicating an amount of current flowing from the oscillation circuit to the antenna electrode,a phase differential detection circ...

이 특허에 인용된 특허 (49)

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이 특허를 인용한 특허 피인용횟수: 61

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