Article detection system with synchronous demodulation

Details Article detection system with synchronous demodulation Article detection system with synchronous demodulation

1977-02-11

1978-10-10

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

340600, 340674, G01D 2104

Patent

active

041198433

ABSTRACT:
An article detection system utilizing optical transducers in a transducer housing designed to minimize detection errors and including additional circuitry for minimizing errors in the processing of the signal. The system produces an output for each article detected which is utilized in control circuitry for controlling external machine operations in response to various detected conditions.

REFERENCES:
patent: 3737666 (1973-06-01), Dutro
patent: 3852592 (1974-12-01), Scoville et al.
patent: 3964041 (1976-06-01), Hinds
patent: 3983373 (1976-09-01), Russell

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