Device for detecting center of steering angle in vehicle

Details Device for detecting center of steering angle in vehicle Device for detecting center of steering angle in vehicle

1984-02-02

1986-12-30

Shoop, Jr., William M.

Communications: electrical

Selective

Having indication or alarm

340 56, B60Q 140, B60Q 142

Patent

active

046332146

ABSTRACT:
The present invention relates to a device for detecting the center of a steering angle in a vehicle.
This device comprises a steering angle sensor provided on a vehicle steering mechanism for electrically detecting a steering angle, a temporary storing portion for temporarily storing a center value calculated in response to an output from the sensor through a first switch, a comparison circuit for comparing the center value stored in the temporary storage portion with an output from the steering angle sensor to ON-OFF operate the first switch, a center storage portion for taking out the center value in the temporary storage portion through a second switch to store the same, and a distance measuring portion controlled by the comparison circuit, for ON-OFF operating the second switch after a lapse of a predetermined running distance upon ON-operation of the first switch, the aforesaid center storage portion including an integration circuit having a resistor and a capacitor.
The device can reliably, electrically take out only the substantially effective change in the steering angle in a vehicle, so that various vehicle controls can be effectively performed.

REFERENCES:
patent: 3955175 (1976-05-01), Holt
patent: 4058797 (1977-11-01), Sekiguchi et al.
patent: 4365233 (1982-12-01), Halmshaw
patent: 4384270 (1983-05-01), Morita et al.
patent: 4403211 (1983-09-01), Shibata et al.
Timbie et al, Principles of Electrical Engineering, Apr. 1957, p. 216.

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