A SINGLE LINE MULTIPLEXING SYSTEM FOR SENSORS AND ACTUATORS

摘要

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.