Electronic tachograph

Details Electronic tachograph Electronic tachograph

G - Physics

01

D

235/134, 340/30

G01D 9/30 (2006.01) G01F 1/08 (2006.01) G07C 5/08 (2006.01) G07C 5/12 (2006.01)

Patent

CA 1086697

Abstract of the Disclosure: An electronic tachograph for providing a chart recording of the speed of a vehicle and the distance travel- led by the vehicle in relation to time includes an input trans- ducer coupled to the vehicle drive to provide distance pulses representing the distance travelled by the vehicle, a sampling circuit which samples the distance pulses at a predetermined rate and provides pulses to a speed counter and a distance counter which responsively provide control outputs represent- ative of the speed of the vehicle and the distance travelled by She vehicle for controlling stepping motors which effect the positioning of a speedometer shaft and the incrementing of an odometer,, and for moving a speed stylus and an odometer, stylus on a recording chart which is driven by a further stepping motor controlled by outputs of a time base generator which supplies timing pulses to the sampling circuit and the speed control circuits.

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