Patent ID: 6438506
Filing Date: 2002-08-20
Classification: A01B,G01P,G01S

Abstract:
An apparatus for determining ground speed of a work vehicle, comprising:a first sensor configured to produce a first signal representative of a first quantity representative of the ground speed of the work vehicle; a second sensor configured to produce a second signal representative of a second quantity representative of the ground speed of the work vehicle; and a control unit coupled to the first sensor and the second sensor, the control unit configured to receive the first and second signals, wherein the control unit determines a first indication of the ground speed of the work vehicle if at least one of the first and the second signals indicates that the ground speed is greater than a first ground speed range, and determines a second indication of the ground speed if the at least one of the first and the second signals indicates that the ground speed is less than a second ground speed range, the second ground speed range being less than or equal to the first ground speed range.