Workpiece identification apparatus

Details Workpiece identification apparatus Workpiece identification apparatus

1981-01-02

1982-11-23

Knowles, Allen N.

Optics: measuring and testing

By configuration comparison

With comparison to master, desired shape, or reference voltage

235 92DN, 235 92CA, 356376, 356398, 250559, 250223R, 364556, G01B 1100

Patent

active

043602746

ABSTRACT:
Workpiece identification apparatus for use in identifying to which of a number of predetermined types a workpiece belongs. The apparatus scans workpieces to be learnt and calculates a set of parameters of each workpiece. After scanning all the workpieces to be learnt, the apparatus selects a sub-set of the parameters such that the sub-set is unique for each learnt workpiece with an allowance for a selected number of parameters to be erroneously determined. The apparatus then scans workpieces to be identified and calculates an equivalent sub-set of parameters thereof and identifies the workpiece by comparing this sub-set with the learnt sub-sets.

REFERENCES:
patent: 3395794 (1968-08-01), Petry
patent: 3521749 (1970-07-01), Dijstelbergen et al.
patent: 3525433 (1970-08-01), Babb
patent: 3902811 (1975-09-01), Altman et al.
patent: 4055834 (1977-10-01), Planke
patent: 4105925 (1978-08-01), Rossol et al.
patent: 4259571 (1981-03-01), Dubberly
patent: 4298285 (1981-11-01), Ito
patent: 4325640 (1982-04-01), Dreyfus et al.
"Control Devices and Systems," Control Engineering, vol. 20, Jun. 1973.

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