Sensor system with adjustment for ambient conditions

Details Sensor system with adjustment for ambient conditions Sensor system with adjustment for ambient conditions

1991-10-08

1993-07-06

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

307311, H01J 4014

Patent

active

052256693

ABSTRACT:
A sensor system for recording the ambient conditions of an optical sensor having a transmitter unit and a receiver unit linked by an optical gap. An electronic sensor unit is provided that predetermines a basic setting of the optical sensor independent of the ambient conditions. The electronic sensor unit contains a signal processing section with comparators for comparing a reception signal of the optical sensor with threshold values corresponding to certain ambient conditions. The electronic sensor unit recognizes and evaluates changes in the ambient conditions as a function of the comparing, and restores the basic setting of the optical sensor such that the sensor system dependably reacts to subsequent changes in the ambient conditions.

REFERENCES:
patent: 4620141 (1986-10-01), McCumber et al.
patent: 4708482 (1987-11-01), Neiheisel
patent: 4786800 (1988-11-01), Kamen
patent: 4836682 (1989-06-01), Keenan, III
patent: 5008531 (1991-04-01), Ono et al.

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