Vehicle speed sensor utilizing relationship between vehicle whee

Details Vehicle speed sensor utilizing relationship between vehicle whee Vehicle speed sensor utilizing relationship between vehicle whee

1993-06-01

1996-12-10

Trammell, James P.

Boots, shoes, and leggings

324161, 364565, 367 91, G01S 1360, G01S 1364

Patent

active

055838006

ABSTRACT:
The apparatus has a signal processor for determining the ground speed of a motor vehicle on the basis of the frequency of a wave transmitted from a transmitter and the frequency of the wave reflected by the ground surface and received by a receiver. The signal processor includes a relationship obtaining device for obtaining a relationship between an estimated vehicle speed obtained on the basis of the speed of a vehicle wheel, and a provisional speed determined on the basis of the frequencies of the transmitted and reflected waves, when the vehicle is in a steady running state in which the estimated vehicle speed accurately represents the actual vehicle speed. The signal processor determines the final vehicle speed on the basis of the obtained relationship.

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