JPH0736304Y2 - 光線式検知装置の投光回路 - Google Patents

光線式検知装置の投光回路

Info

Publication number
JPH0736304Y2
JPH0736304Y2 JP1988068386U JP6838688U JPH0736304Y2 JP H0736304 Y2 JPH0736304 Y2 JP H0736304Y2 JP 1988068386 U JP1988068386 U JP 1988068386U JP 6838688 U JP6838688 U JP 6838688U JP H0736304 Y2 JPH0736304 Y2 JP H0736304Y2
Authority
JP
Japan
Prior art keywords
light
modulated
frequency
counter
pulse signal
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.)
Expired - Lifetime
Application number
JP1988068386U
Other languages
English (en)
Japanese (ja)
Other versions
JPH01171388U (en]
Inventor
賢 成田
Original Assignee
竹中エンジニアリング工業株式会社
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 竹中エンジニアリング工業株式会社 filed Critical 竹中エンジニアリング工業株式会社
Priority to JP1988068386U priority Critical patent/JPH0736304Y2/ja
Publication of JPH01171388U publication Critical patent/JPH01171388U/ja
Application granted granted Critical
Publication of JPH0736304Y2 publication Critical patent/JPH0736304Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices By Optical Means (AREA)
  • Measurement Of Optical Distance (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
JP1988068386U 1988-05-24 1988-05-24 光線式検知装置の投光回路 Expired - Lifetime JPH0736304Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988068386U JPH0736304Y2 (ja) 1988-05-24 1988-05-24 光線式検知装置の投光回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988068386U JPH0736304Y2 (ja) 1988-05-24 1988-05-24 光線式検知装置の投光回路

Publications (2)

Publication Number Publication Date
JPH01171388U JPH01171388U (en]) 1989-12-05
JPH0736304Y2 true JPH0736304Y2 (ja) 1995-08-16

Family

ID=31293708

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988068386U Expired - Lifetime JPH0736304Y2 (ja) 1988-05-24 1988-05-24 光線式検知装置の投光回路

Country Status (1)

Country Link
JP (1) JPH0736304Y2 (en])

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5844378A (ja) * 1981-09-10 1983-03-15 Koito Ind Co Ltd 踏切障害物検知装置

Also Published As

Publication number Publication date
JPH01171388U (en]) 1989-12-05

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