Brake switch abnormality detection device
First Claim
1. A brake switch abnormality detection device for a vehicle having front and rear wheels, comprising:
- brake means operatively provided for applying a braking force to said front and rear wheels;
brake switch means for producing a brake signal while said brake means is operated;
calculation means for calculating an estimated vehicle speed;
detection means for detecting the presence of said brake signal;
comparison means for comparing said estimated vehicle speed with a first predetermined speed and a second predetermined speed, said first speed being greater than said second predetermined speed; and
abnormality detection means for producing an abnormality signal when said detection means fails to detect the presence of said brake signal during at least one detection period which is from a time when said estimated vehicle falls below said first predetermined speed to a time when said estimate vehicle speed reaches said second predetermined speed.
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Accused Products
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.
12 Citations
19 Claims
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1. A brake switch abnormality detection device for a vehicle having front and rear wheels, comprising:
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brake means operatively provided for applying a braking force to said front and rear wheels; brake switch means for producing a brake signal while said brake means is operated; calculation means for calculating an estimated vehicle speed; detection means for detecting the presence of said brake signal; comparison means for comparing said estimated vehicle speed with a first predetermined speed and a second predetermined speed, said first speed being greater than said second predetermined speed; and abnormality detection means for producing an abnormality signal when said detection means fails to detect the presence of said brake signal during at least one detection period which is from a time when said estimated vehicle falls below said first predetermined speed to a time when said estimate vehicle speed reaches said second predetermined speed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification