Object comparing device with discrete sensors and master object

Details Object comparing device with discrete sensors and master object Object comparing device with discrete sensors and master object

1989-09-07

1991-05-14

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356394, G01N 904

Patent

active

050158414

ABSTRACT:
A comparing device for comparing major landmarks and the orientation of a master object to like characteristics of test objects includes a plurality of master sensors arranged in a predetermined pattern corresponding to a desired orientation and/or landmarks of a fixed master object for producing an output representative of the orientation of the fixed master object. A plurality of test sensors are arranged in the same pattern as the plurality of master sensors for sensing major landmarks and the orientation of a test object and for producing an output representative of the orientation and major landmarks of the test object. In addition, a comparison device compares the output of the plurality of master sensors to the output of the plurality of test sensors for providing a signal to indicate incorrectness of the test object corresponding to the desired characteristics of the fixed master object and subsequent ejection of the incorrect test object from the processing line.

REFERENCES:
patent: 3411625 (1968-11-01), Calhoun
patent: 3529169 (1970-09-01), Heaney et al.
patent: 3546377 (1970-12-01), Troll
patent: 4241835 (1980-12-01), Lockett
patent: 4784493 (1988-11-01), Turcheck, Jr. et al.

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