JPS5294029A - Monitoring method of optical detecting circuit - Google Patents

Monitoring method of optical detecting circuit

Info

Publication number
JPS5294029A
JPS5294029A JP1031876A JP1031876A JPS5294029A JP S5294029 A JPS5294029 A JP S5294029A JP 1031876 A JP1031876 A JP 1031876A JP 1031876 A JP1031876 A JP 1031876A JP S5294029 A JPS5294029 A JP S5294029A
Authority
JP
Japan
Prior art keywords
detecting circuit
monitoring method
optical detecting
monitoring
cur
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
Application number
JP1031876A
Other languages
Japanese (ja)
Inventor
Sadao Kito
Akihiko Takiguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP1031876A priority Critical patent/JPS5294029A/en
Publication of JPS5294029A publication Critical patent/JPS5294029A/en
Pending legal-status Critical Current

Links

Landscapes

  • Handling Of Sheets (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE: To provide a monitoring method to prevent failure by detection of high reliability with monitoring operation status of an optical detecting circuit by whether a specified output signal can be obtained or not on its photo sensitive element when driving current of a light emitting element is varied or cur off.
COPYRIGHT: (C)1977,JPO&Japio
JP1031876A 1976-02-04 1976-02-04 Monitoring method of optical detecting circuit Pending JPS5294029A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1031876A JPS5294029A (en) 1976-02-04 1976-02-04 Monitoring method of optical detecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1031876A JPS5294029A (en) 1976-02-04 1976-02-04 Monitoring method of optical detecting circuit

Publications (1)

Publication Number Publication Date
JPS5294029A true JPS5294029A (en) 1977-08-08

Family

ID=11746878

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1031876A Pending JPS5294029A (en) 1976-02-04 1976-02-04 Monitoring method of optical detecting circuit

Country Status (1)

Country Link
JP (1) JPS5294029A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5961226A (en) * 1982-09-30 1984-04-07 Anritsu Corp Device for discriminating fault of optical switch
JPS6068725U (en) * 1983-10-18 1985-05-15 株式会社山武 photoelectric switch
JPH01224689A (en) * 1988-03-04 1989-09-07 Fujitsu Ltd Optical sensor circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4930375A (en) * 1970-06-23 1974-03-18

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4930375A (en) * 1970-06-23 1974-03-18

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5961226A (en) * 1982-09-30 1984-04-07 Anritsu Corp Device for discriminating fault of optical switch
JPH0311577B2 (en) * 1982-09-30 1991-02-18 Anritsu Corp
JPS6068725U (en) * 1983-10-18 1985-05-15 株式会社山武 photoelectric switch
JPH01224689A (en) * 1988-03-04 1989-09-07 Fujitsu Ltd Optical sensor circuit

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