Single line multiplexing system for sensors and actuators

Details Single line multiplexing system for sensors and actuators Single line multiplexing system for sensors and actuators

1978-09-13

1982-01-19

Pitts, Harold I.

Communications: electrical

Continuously variable indicating

With meter reading

34082554, H04Q 900

Patent

active

043119867

ABSTRACT:
A single line refigurable power transmission and signal multiplexing system having a central processor and a plurality of remotely located devices such as sensors, actuators and associated interfaces. Communications between the central processor and the remote devices is accomplished via a single bi-directional transmission line. A negative logic pulse width encoding technique is utilized to facilitate power and signal transmission. Selective activation is accomplished by a pulse width discriminator associated with each interface which employs a two-part recognition test to identify specific pulse width signals.

REFERENCES:
patent: 2708744 (1955-05-01), Neiswinter
patent: 2968022 (1961-01-01), Unterberger
patent: 3059228 (1962-10-01), Beck
patent: 3538504 (1970-11-01), Higginbotham
patent: 3634824 (1972-01-01), Zinn
patent: 3651454 (1972-03-01), Venema
patent: 3651765 (1972-03-01), Grundy
patent: 3678512 (1972-07-01), Fergus
patent: 3717858 (1973-02-01), Hadden
patent: 3796959 (1974-03-01), Mackenzie
patent: 3866146 (1975-02-01), Van Moupik

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