Title:
PHOTOELECTRIC MONITOR DEVICE
Document Type and Number:
Japanese Patent JPS5847768
Kind Code:
A
Abstract:
An optical electronic monitoring apparatus is used to detect undesired coil or lap formation at transport and drive rollers 13. For this purpose the mean 14 of a light barrier is arranged along the surface of the roller 13 parallel to its axis 23 in such a way that it is partially obscured by the cross-section of the roller. The subsequent evaluation circuit has a low pass filter 16, a differentiation stage 17 and a further low pass filter 18 (Figure 2).
Inventors:
GERUHARUTO HERUTSUAA
Application Number:
JP14846482A
Publication Date:
March 19, 1983
Filing Date:
August 25, 1982
Export Citation:
Assignee:
SICK OPTIK ELEKTRONIK ERWIN
International Classes:
B65H54/28; B65H63/00; B65H63/04; (IPC1-7): B65H54/28; B65H63/04
Domestic Patent References:
| JPS50148763A | 1975-11-28 | |||
| JP47050027A |
Attorney, Agent or Firm:
Fujiya Shiga
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