System for detecting reflecting objects

Details System for detecting reflecting objects System for detecting reflecting objects

1974-12-16

1976-08-31

Corbin, John K.

Optics: measuring and testing

Inspection of flaws or impurities

Bore inspection

250202, 250209, G06K 1102

Patent

active

039777928

ABSTRACT:
In a system for optically detecting with a plurality of light detecting elements a reflecting object in the form of long stripe disposed on the surface of a traveling path, the average value of the respective electric quantities derived from the light detecting elements is obtained through arithmetic operation and the reference value is automatically changed according to the degree of the surface being soiled, by multiplying the average value by a certain safety factor, so that accurate detection can be performed independent of the degree of the soil on the traveling path surface.

REFERENCES:
patent: 3624538 (1971-11-01), Gere et al.
patent: 3718821 (1973-02-01), Vischulis
patent: 3881568 (1975-05-01), Ando et al.

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