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
Links
- 238000001514 detection method Methods 0.000 claims description 2
- 230000005856 abnormality Effects 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Emergency Alarm Devices (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Description
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。
Fig. 1 is a schematic explanatory diagram showing an embodiment of the detection device of the present invention installed in a railway crossing, Fig. 2 is an explanatory diagram of the transducer 1, and Fig. 3 is an explanatory diagram of the transducer 1. FIG. 4 is a time chart showing the timing at which the transducer 12 transmits and receives ultrasonic waves. In the figure, 1...transducer/receiver, 2...reflector.
Claims (1)
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。 A signal is transmitted across the movement space of people and cars, and an abnormality is detected based on whether the signal is cut off for a certain period of time by a moving object such as a car that has entered the movement space. A transducer for transmitting and receiving ultrasonic waves is provided at one position corresponding to the moving space of the moving object, a reflector is arranged at the other position corresponding to the transducer, and further, An abnormality detection device using ultrasonic waves, comprising determining means for outputting an abnormality signal when the transducer does not receive a reflected wave from the reflector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2869190U JPH03120268U (en) | 1990-03-20 | 1990-03-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2869190U JPH03120268U (en) | 1990-03-20 | 1990-03-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03120268U true JPH03120268U (en) | 1991-12-10 |
Family
ID=31531484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2869190U Pending JPH03120268U (en) | 1990-03-20 | 1990-03-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03120268U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000043728A (en) * | 1998-07-29 | 2000-02-15 | Railway Technical Res Inst | Passage abnormality detection device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5068290A (en) * | 1973-10-17 | 1975-06-07 | ||
| JPS50153893A (en) * | 1974-05-31 | 1975-12-11 |
-
1990
- 1990-03-20 JP JP2869190U patent/JPH03120268U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5068290A (en) * | 1973-10-17 | 1975-06-07 | ||
| JPS50153893A (en) * | 1974-05-31 | 1975-12-11 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000043728A (en) * | 1998-07-29 | 2000-02-15 | Railway Technical Res Inst | Passage abnormality detection device |
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