Vehicle navigator for calculating distance based on mean acceler

Details Vehicle navigator for calculating distance based on mean acceler Vehicle navigator for calculating distance based on mean acceler

1997-05-09

1999-11-16

Swarthout, Brent A.

Communications: electrical

Vehicle position indication

73490, 701207, 701208, G08G 1123

Patent

active

059865830

ABSTRACT:
In a vehicle navigator using an acceleration sensor for detecting a running distance, the precision of measuring the running distance is intended to be improved. Output data of the acceleration sensor during a predetermined time duration is stored in an output storage, and the average value or "mean acceleration" of output data is calculated by a mean acceleration calculator A running distance calculator calculates a difference between the acceleration measured with the acceleration sensor and the mean acceleration calculated by the mean acceleration calculator, and this difference is double integrated to obtain the running distance.

REFERENCES:
patent: 4357833 (1982-11-01), Wiklund et al.
patent: 5115238 (1992-05-01), Shimizu et al.
patent: 5267166 (1993-11-01), Takata et al.
patent: 5323152 (1994-06-01), Morita

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