JPS60169515U - sensor circuit - Google Patents

sensor circuit

Info

Publication number
JPS60169515U
JPS60169515U JP5776984U JP5776984U JPS60169515U JP S60169515 U JPS60169515 U JP S60169515U JP 5776984 U JP5776984 U JP 5776984U JP 5776984 U JP5776984 U JP 5776984U JP S60169515 U JPS60169515 U JP S60169515U
Authority
JP
Japan
Prior art keywords
reference voltage
sensor
level
sensor circuit
sensor sensitivity
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
JP5776984U
Other languages
Japanese (ja)
Inventor
長田　英明
吉江　政英
Original Assignee
株式会社三協精機製作所
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 株式会社三協精機製作所 filed Critical 株式会社三協精機製作所
Priority to JP5776984U priority Critical patent/JPS60169515U/en
Publication of JPS60169515U publication Critical patent/JPS60169515U/en
Pending legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices By Optical Means (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Optical Transform (AREA)
  • Control Of Position Or Direction (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図及び第２図は従来のセンサー回路を示す回路図、
第３図は本考案の一実施例を示す回路図、第４図は同実
施例を説明するための図である。 ＬＥＤ・・・発光ダイオード、ＰＴ・・・フォトトラン
ジスタ、Ｒ３−Ｒ８・・・抵抗、ＳＨ２・・・シュミッ
ト回路、ＦＥＴ・・・電界効果トランジスタ。1 and 2 are circuit diagrams showing conventional sensor circuits,
FIG. 3 is a circuit diagram showing an embodiment of the present invention, and FIG. 4 is a diagram for explaining the embodiment. LED...Light emitting diode, PT...Phototransistor, R3-R8...Resistor, SH2...Schmitt circuit, FET...Field effect transistor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] センサーを含む検出回路と、基準電圧を発生する基準電
圧発生手段と、この基準電圧発生手段から基準電圧とし
てセンサー感度のチェックレベルと通常の検出レベルを
選択的に出力させるスイッチング手段と、このスイッチ
ング手段により出力させた基準電圧と上記検出回路の出
力電圧とを比較する比較手段とを有し、上記基準電圧を
センサー感度のチェック時に通常の検出レベルからセン
サー感度のチェックレベルに切換えるようにしたことを
特徴とするセンサー回路。A detection circuit including a sensor, a reference voltage generation means for generating a reference voltage, a switching means for selectively outputting a sensor sensitivity check level and a normal detection level as a reference voltage from the reference voltage generation means, and the switching means. and a comparison means for comparing the reference voltage outputted by the sensor with the output voltage of the detection circuit, and the reference voltage is switched from a normal detection level to a sensor sensitivity check level when checking the sensor sensitivity. Features a sensor circuit.
JP5776984U 1984-04-19 1984-04-19 sensor circuit Pending JPS60169515U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5776984U JPS60169515U (en) 1984-04-19 1984-04-19 sensor circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5776984U JPS60169515U (en) 1984-04-19 1984-04-19 sensor circuit

Publications (1)

Publication Number Publication Date
JPS60169515U true JPS60169515U (en) 1985-11-11

Family

ID=30582612

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5776984U Pending JPS60169515U (en) 1984-04-19 1984-04-19 sensor circuit

Country Status (1)

Country Link
JP (1) JPS60169515U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01116410A (en) * 1987-10-30 1989-05-09 Hitachi Ltd Optical sensor having self-diagnostic function and apparatus using same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01116410A (en) * 1987-10-30 1989-05-09 Hitachi Ltd Optical sensor having self-diagnostic function and apparatus using same

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