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특허 상세정보

Vehicle navigation system and method using multiple axes accelerometer

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G06G-007/78   
미국특허분류(USC) 701/220 ; 701/213 ; 701/214 ; 701/216 ; 701/221 ; 701/200 ; 340/723 ; 340/995 ; 340/990 ; 343/450 ; 343/451
출원번호 US-0091430 (1998-11-30)
국제출원번호 PCT/US96/20848 (1996-12-27)
§371/§102 date 19981130 (19981130)
국제공개번호 WO-9724582 (1997-07-10)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Carlson, Gaskey & Olds
인용정보 피인용 횟수 : 120  인용 특허 : 73
초록

The improved vehicle navigation system uses a multiple, orthogonal axes accelerometer, such as two or three accelerometers which are mounted orthogonal to one another. The two axes whose acceleration are to be measured are the longitudinal (nose to rear bumper) axis and lateral (left to right side) axis. The tangential or longitudinal axis acceleration is integrated once to obtain longitudinal speed and is integrated again to produce a vehicle displacement. The lateral accelerometer measures the centripetal force that the vehicle is encountering which is...

대표
청구항

[ What is claimed is:] [1.]1. A vehicle navigation system (10) comprising:an orthogonal axes accelerometer (20) provides longitudinal acceleration information and lateral acceleration information; andsaid vehicle navigation system (10) derives longitudinal speed from said longitudinal acceleration information and derives heading change from said lateral acceleration information and said longitu dinal speed and uses said heading change and said longitudinal acceleration information to propagate a previous position to a current position.

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