System for detecting a failure in a vehicle velocity detector an

Details System for detecting a failure in a vehicle velocity detector an System for detecting a failure in a vehicle velocity detector an

1976-04-27

1978-11-14

Yusko, Donald J.

Communications: electrical

Selective

Having indication or alarm

303 92, 340670, 361242, B60T 810

Patent

active

041258258

ABSTRACT:
In an automatic brake controller having a vehicle velocity detector for detecting vehicle velocity and a wheel velocity detector for detecting wheel velocity, a failure detecting system is provided for the vehicle velocity detector and the wheel velocity detector. A comparator which makes a comparison between the vehicle velocity signal obtained from said vehicle velocity detector and the wheel velocity signal obtained from said wheel velocity detector generates a predetermined output signal when the difference between both the output signals of said detectors exceeds a predetermined value, and a logical circuit is responsive to said output signal from said comparator to provide a failure signal when a signal representative of a normal transit condition is being generated.

REFERENCES:
patent: 3667812 (1972-06-01), Carp et al.
patent: 3701568 (1972-10-01), Lewis et al.
patent: 3759582 (1973-09-01), Ohta et al.
patent: 3863993 (1975-02-01), Fleisher et al.
patent: 3920280 (1975-11-01), Luhdorff et al.
patent: 3944288 (1976-03-01), Bertolasi
patent: 3964796 (1976-06-01), Brener
patent: 4046426 (1977-09-01), Miyake
patent: 4073545 (1978-02-01), Takeuchi et al.

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