Process for reliably detecting the passage of a target object us

Details Process for reliably detecting the passage of a target object us Process for reliably detecting the passage of a target object us

1992-12-30

1994-06-28

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250221, G01V 904

Patent

active

053249313

ABSTRACT:
A target acquisition system for a photoelectric control unit which helps avoid interference problems due to optical and electrical noise. The system provides for the interpulse interval between light pulses transmitted by the photoelectric control unit to be varied in accordance with pseudo-random jitter factors during the target acquisition process. Noise which may be on frequency with the normal repetition rate of the photoelectric control unit is then eliminated from the detection process pursuant to synchronous detection procedures.

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patent: 5099113 (1992-03-01), Oi et al.
patent: 5126555 (1992-06-01), Hawryluk
patent: 5151591 (1992-09-01), Johnson et al.
patent: 5187361 (1993-02-01), Ishii

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