Multiplexed vehicle window wiper control

Details Multiplexed vehicle window wiper control Multiplexed vehicle window wiper control

1992-04-09

1993-04-06

Ro, Bentsu

Electricity: motive power systems

Periodic, repetitious or successive operations control of...

Variable periods or intervals between controlling operations

1525012, 307 101, 34082579, 34087013, 318DIG2, B60S 108

Patent

active

052006760

ABSTRACT:
A window wiper system for an automotive vehicle provides multiplex encoding of a control switch signal and an additional wiper control signal in a two-channel multiplex control signal and decoding of the multiplex control signal by the wiper mechanism for control of wiper operation. The multiplex control signal is a cyclical waveform containing alternating cycles of different first and second periods wherein the duty cycle of the first period cycles is determined by the additional wiper control signal and the duty cycle of the second period cycles is determined by the control switch. The additional wiper control signal may be derived from a rain sensor, an intermittent delay control resistor or any other device on the passenger side of the vehicle firewall which generates a signal controlling wiper operation.

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