JPH01171388U - - Google Patents

Info

Publication number
JPH01171388U
JPH01171388U JP6838688U JP6838688U JPH01171388U JP H01171388 U JPH01171388 U JP H01171388U JP 6838688 U JP6838688 U JP 6838688U JP 6838688 U JP6838688 U JP 6838688U JP H01171388 U JPH01171388 U JP H01171388U
Authority
JP
Japan
Prior art keywords
light
modulated
detection device
beam detection
decimal counter
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.)
Granted
Application number
JP6838688U
Other languages
English (en)
Other versions
JPH0736304Y2 (ja
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 filed Critical
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)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Geophysics And Detection Of Objects (AREA)

Description

【図面の簡単な説明】
第１図は、本校案の構成を示すブロツク図であ
り、第２図はＢＣＤ１０進カウンターのタイミン
グ図である。

Claims (1)

    【実用新案登録請求の範囲】
  1. 高周波の変調光を低周波で振幅変調した形式の
    二重変調パルス光を出力する投光部と、この二重
    変調パルス光を受ける受光部とで構成される光線
    式検知装置において、基本周波数発振部と、分周
    回路と、ＢＣＤ１０進カウンターと波形合成部と
    、投光素子駆動部とを備え、分周回路の次にＢＣ
    Ｄ１０進カウンターを接続し、パルス占有率を制
    御するようにしたことを特徴とする光線式検知装
    置の投光回路。
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 true JPH01171388U (ja) 1989-12-05
JPH0736304Y2 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 (ja)

Citations (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

Patent Citations (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
JPH0736304Y2 (ja) 1995-08-16

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