Automotive wiper control system with fail-safe feature for preve

Details Automotive wiper control system with fail-safe feature for preve Automotive wiper control system with fail-safe feature for preve

1987-04-07

1991-09-17

Ro, Bentsu

Electricity: motive power systems

Periodic, repetitious or successive operations control of...

318434, 318DIG2, B60S 108

Patent

active

050497944

ABSTRACT:
A wiper control system includes measures an elapsed time of operation cycle, through which a wiper blade assembly performs one cycle of wiper operation. The wiper control system resets the measured elapsed time when ever the wiper blade assembly reaches a predetermined position. On the other hand, wiper control system detects the measured elapsed time exceeding a given period of time to initiate a predetermined fail-safe operation. In practice, the fail-safe operation is performed to intermittently drive the wiper motor with an interval which is long enough to sufficiently cooling off the wiper motor, when fail-safe operation is performed while wiper system is maintained ON, and to terminate driving of the wiper motor when the wiper system is turned OFF.

REFERENCES:
patent: 4314186 (1982-02-01), Gille et al.
patent: 4375610 (1983-03-01), Nagaoka et al.
patent: 4451768 (1984-05-01), Kohler et al.
patent: 4542325 (1985-09-01), Kobayashi et al.
patent: 4584508 (1986-04-01), Kobayashi et al.
patent: 4603316 (1986-07-01), Kobayashi et al.
"Windscreen Wiper Controller", Hobby Electronics, Mar. 1981, pp. 30-31.
Greg Swain, "A Control Unit for Windscreen Wipers", Electronics, Australia, Sep. 1979, pp. 68-73.

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