Electronic monitoring system with selective signal inversion

Details Electronic monitoring system with selective signal inversion Electronic monitoring system with selective signal inversion

1983-04-21

1985-09-24

Miller, Stanley D.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

340561, 328 5, H03K 326

Patent

active

045434972

ABSTRACT:
A contactless motion detector is energized from a source of current via a pair of supply leads and delivers an output signal by way of a further lead through an Exclusive-OR gate to a control electrode of a binary electronic switch in circuit with the source and a load to modify the flow of load current upon the approach of a metallic element, for example. The Exclusive-OR gate, having one input connected to that further lead, has another input connected to an ancillary lead which in turn is connected to the other supply lead through a decoupling diode. A selector switch enables completion of the load circuit directly via the latter supply lead, thereby causing inverted transmission of the output signal of the detector to the control electrode, or by way of the ancillary lead to prevent the inversion of that output signal, whereby the load current can be either increased or reduced upon the occurrence of the event to be detected.

REFERENCES:
patent: 4135124 (1979-01-01), Buck

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