Brake switch abnormality detection device

Details Brake switch abnormality detection device Brake switch abnormality detection device

1991-09-12

1993-04-06

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Pipeless valves

188 111, 3031134, F16D 6600, B60T 1718

Patent

active

051997703

ABSTRACT:
A brake switch abnormality detection device is provided for use in a motorcycle. The device includes brake switches for producing brake signals indicative of the respective operations of the brake switches, an estimated vehicle speed calculation, unit, a brake signal detector for detecting the presence or absence of the brake signals, a comparator for comparing the estimated vehicle speed with a first predetermined speed and a second predetermined speed which is smaller than the first predetermined speed, and an abnormality detector. The abnormality detector detects abnormalities and produces an abnormality signal when the estimated vehicle speed is reduced from the first predetermined speed to the second predetermined speed without any detection of the brake signal.

REFERENCES:
patent: 4545623 (1985-10-01), Sato et al.
patent: 4708406 (1987-11-01), Takagi et al.
patent: 4919496 (1990-04-01), Burgdorf et al.
patent: 5005916 (1991-04-01), Fujioka et al.
Leiber et al., Brake Boosters Designed Specifically for Anti-Lock Braking Systems (ABS), May 1984.

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