JPS55124003A - Reflection type photoelectric switch - Google Patents
Reflection type photoelectric switchInfo
- Publication number
- JPS55124003A JPS55124003A JP3212979A JP3212979A JPS55124003A JP S55124003 A JPS55124003 A JP S55124003A JP 3212979 A JP3212979 A JP 3212979A JP 3212979 A JP3212979 A JP 3212979A JP S55124003 A JPS55124003 A JP S55124003A
- Authority
- JP
- Japan
- Prior art keywords
- photoelectric switch
- reference voltage
- reflected light
- output
- reflection type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
PURPOSE: To obtain the reflection type photoelectric switch which is capable of detecting the minute change of object surfaces with high sensitivity and a simple constitution by comparing the output being the ratio of specular reflection and diffused reflection with a reference voltage and producing a signal when this is exceeded.
CONSTITUTION: A photoelectric switch 1 consists of a light source 2, lens 3, photodetectors 4, 5. A photodetector 4 receives specular reflected light and the other photodetector 5 receives the diffusion reflected light from the subject X. These lights are fed to electric circuits then through circuits such as level regulators 8, 9 and the ratio of the both inputs is outputted by a divider 16 and is compared with the output of a reference voltage generator 17. Here, when the divider output is higher than the reference voltage, the detection signal I is outputted from a comparator 18. This enables the change in minute reflected light quantity to be substantially increased of sensitivity and detected and enables the photoelectric switch of extremely high accuracy to be obtained.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3212979A JPS55124003A (en) | 1979-03-19 | 1979-03-19 | Reflection type photoelectric switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3212979A JPS55124003A (en) | 1979-03-19 | 1979-03-19 | Reflection type photoelectric switch |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55124003A true JPS55124003A (en) | 1980-09-24 |
Family
ID=12350268
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3212979A Pending JPS55124003A (en) | 1979-03-19 | 1979-03-19 | Reflection type photoelectric switch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55124003A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5912043U (en) * | 1982-07-14 | 1984-01-25 | 株式会社明電舎 | Flaw detection device |
JPS59142442A (en) * | 1983-02-04 | 1984-08-15 | Mitsutoyo Mfg Co Ltd | Method and device for detecting abnormality of surface of object |
JPS60122306A (en) * | 1983-12-05 | 1985-06-29 | Komatsu Ltd | Detector for road surface crack |
JPS6242007A (en) * | 1985-08-19 | 1987-02-24 | Nok Corp | Detecting method for surface property of workpiece |
JPS63284455A (en) * | 1987-05-15 | 1988-11-21 | Kobe Steel Ltd | Surface defect inspection device |
JPH01131409A (en) * | 1987-08-04 | 1989-05-24 | Kawasaki Steel Corp | Measuring instrument for maximum irregular reflection intensity |
RU2738593C2 (en) * | 2016-02-24 | 2020-12-14 | Томра Сортинг Н.В. | System and method of detecting acrylamide precursors in raw potatoes and potato-based food products |
-
1979
- 1979-03-19 JP JP3212979A patent/JPS55124003A/en active Pending
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5912043U (en) * | 1982-07-14 | 1984-01-25 | 株式会社明電舎 | Flaw detection device |
JPS59142442A (en) * | 1983-02-04 | 1984-08-15 | Mitsutoyo Mfg Co Ltd | Method and device for detecting abnormality of surface of object |
JPH0410583B2 (en) * | 1983-02-04 | 1992-02-25 | ||
JPS60122306A (en) * | 1983-12-05 | 1985-06-29 | Komatsu Ltd | Detector for road surface crack |
JPH0456242B2 (en) * | 1983-12-05 | 1992-09-07 | Komatsu Mfg Co Ltd | |
JPS6242007A (en) * | 1985-08-19 | 1987-02-24 | Nok Corp | Detecting method for surface property of workpiece |
JPS63284455A (en) * | 1987-05-15 | 1988-11-21 | Kobe Steel Ltd | Surface defect inspection device |
JPH0587781B2 (en) * | 1987-05-15 | 1993-12-17 | Kobe Steel Ltd | |
JPH01131409A (en) * | 1987-08-04 | 1989-05-24 | Kawasaki Steel Corp | Measuring instrument for maximum irregular reflection intensity |
RU2738593C2 (en) * | 2016-02-24 | 2020-12-14 | Томра Сортинг Н.В. | System and method of detecting acrylamide precursors in raw potatoes and potato-based food products |
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