Electric signal transmission system on a road vehicle

Details Electric signal transmission system on a road vehicle Electric signal transmission system on a road vehicle

1982-07-19

1986-08-26

Caldwell, Sr., John W.

Communications: electrical

Selective

Having indication or alarm

180 78, 307 10R, 34087031, G08C 100

Patent

active

046085505

ABSTRACT:
Communication of electric signals between a control board mounted on a steering wheel but held in stationary state irrespective of a rotation of the steering wheel and an electric controller disposed at a position remote from a steering mechanism. The control board is supported by a steering drive shaft through a toothed wheel mechanism, so that it remains stationary regardless of a rotation of the shaft. The control board and the electric controller are electrically coupled to each other through a combination of slip rings and brushes, a pair of coils, or two pairs of coils. The control board and the electric controller include each an FSK modulation circuit, an FSK demodulation circuit and a microprocessor for controlling transmission or reception of the electric signals. Key inputs on the control board are encoded by the control board and then transmitted to the electric controller. The electric controller decodes the received code and then renders operation instructions to load-vehicle equipments.

REFERENCES:
patent: 1944905 (1934-01-01), Rowell
patent: 2206512 (1940-07-01), Reinholz
patent: 3867699 (1975-02-01), Stoffer
patent: 3876998 (1975-04-01), Richter
patent: 4048561 (1977-09-01), Wilcox
patent: 4157854 (1979-06-01), Beauch
patent: 4225851 (1980-09-01), Reschovsky
patent: 4242666 (1980-12-01), Reschovsky
patent: 4354190 (1982-10-01), Reschovsky
patent: 4368454 (1983-01-01), Pilatzki
patent: 4404559 (1983-09-01), Renner
patent: 4442515 (1984-04-01), Meitzler

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