JPH03120268U - - Google Patents

Info

Publication number
JPH03120268U
JPH03120268U JP2869190U JP2869190U JPH03120268U JP H03120268 U JPH03120268 U JP H03120268U JP 2869190 U JP2869190 U JP 2869190U JP 2869190 U JP2869190 U JP 2869190U JP H03120268 U JPH03120268 U JP H03120268U
Authority
JP
Japan
Prior art keywords
transducer
signal
abnormality
reflector
ultrasonic waves
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
JP2869190U
Other languages
English (en)
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 JP2869190U priority Critical patent/JPH03120268U/ja
Publication of JPH03120268U publication Critical patent/JPH03120268U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Emergency Alarm Devices (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Description

【図面の簡単な説明】
第１図は本考案の検知装置を鉄道踏切内に設置
した場合の実施例を示す概略説明図、第２図は送
受波器１の説明図、第３図は制御回路６のマイコ
ン内に書き込まれた制御プログラムの要部説明図
、第４図は振動子１２が超音波を送・受信するタ
イミングを示すタイムチヤートであり、図中、 １…送受波器、２…反射器。

Claims (1)

    【実用新案登録請求の範囲】
  1. 人や自動車の移動空間を横切るように信号を送
    信させると共に、該信号が上記移動空間内に侵入
    した自動車等の移動体で一定時間さえ切られるか
    否かによつて異常を検知するようにしたものにお
    いて、移動体の移動空間を挟んで対応する一方の
    位置には超音波を送受信する送受波器を設け、該
    送受波器に対応する他方の位置には反射器を配設
    し、更に、上記送受波器が上記反射器からの反射
    波を受信しない場合に異常信号を出す判定手段を
    設けた超音波を利用した異常検知装置。
JP2869190U 1990-03-20 1990-03-20 Pending JPH03120268U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2869190U JPH03120268U (ja) 1990-03-20 1990-03-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2869190U JPH03120268U (ja) 1990-03-20 1990-03-20

Publications (1)

Publication Number Publication Date
JPH03120268U true JPH03120268U (ja) 1991-12-10

Family

ID=31531484

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2869190U Pending JPH03120268U (ja) 1990-03-20 1990-03-20

Country Status (1)

Country Link
JP (1) JPH03120268U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000043728A (ja) * 1998-07-29 2000-02-15 Railway Technical Res Inst 通行異常検知装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5068290A (ja) * 1973-10-17 1975-06-07
JPS50153893A (ja) * 1974-05-31 1975-12-11

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5068290A (ja) * 1973-10-17 1975-06-07
JPS50153893A (ja) * 1974-05-31 1975-12-11

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000043728A (ja) * 1998-07-29 2000-02-15 Railway Technical Res Inst 通行異常検知装置

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