JPS6355111U - - Google Patents
Info
- Publication number
- JPS6355111U JPS6355111U JP14969486U JP14969486U JPS6355111U JP S6355111 U JPS6355111 U JP S6355111U JP 14969486 U JP14969486 U JP 14969486U JP 14969486 U JP14969486 U JP 14969486U JP S6355111 U JPS6355111 U JP S6355111U
- Authority
- JP
- Japan
- Prior art keywords
- detection coil
- magnetostrictive
- magnetostrictive wire
- comparator
- generated
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 13
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Description
第１図は本考案に係る磁歪信号検出回路の一実
施例の接続図、第２図は第１図のタイミングチヤ
ート、第３図は第１図の動作を説明する為の波形
図、第４図は磁歪信号検出回路の動作原理を説明
する為の図、第５図は第４図の動作を説明する為
の波形図、第６図は従来装置の動作を説明する為
の波形図である。
１…磁歪線、２…駆動コイル、３…検出コイル
、４…直接波、５…反射波。
FIG. 1 is a connection diagram of an embodiment of the magnetostrictive signal detection circuit according to the present invention, FIG. 2 is a timing chart of FIG. 1, FIG. 3 is a waveform diagram for explaining the operation of FIG. 1, and FIG. The figure is a diagram for explaining the operating principle of the magnetostrictive signal detection circuit, Figure 5 is a waveform diagram for explaining the operation of Figure 4, and Figure 6 is a waveform diagram for explaining the operation of the conventional device. . 1...Magnetostrictive wire, 2...Drive coil, 3...Detection coil, 4...Direct wave, 5...Reflected wave.
Claims (1)
配置された磁歪線を有し、前記磁歪線の一端に駆
動パルスを与えることにより発生する縦弾性波が
磁歪線を伝播し前記検出コイルに直接到達するま
での時間ｔ１と磁歪線の開放端部で反射して検出
コイルに到達するまでの時間ｔ２を前記検出コイ
ルに接続された比較器を用いて検出するようにし
た磁歪信号検出回路において、 前記直接波が検出コイルに加わることによりこ
の検出コイルにおいて最初に発生するプラスのパ
ルス出力ａｄと、前記反射波が検出コイルに加わ
ることによりこの検出コイルにおいて発生する２
番目のプラスのパルスｂｒとを一定のスレツシヨ
ールド・レベルをもつ前記比較器に加えこの比較
器の出力より前記時間ｔ１，ｔ２を検出するよう
にしたことを特徴とする磁歪信号検出回路。[Claims for Utility Model Registration] It has a magnetostrictive wire on which a detection coil is arranged so as to be movable in the length direction, and a longitudinal elastic wave generated by applying a driving pulse to one end of the magnetostrictive wire is transmitted to the magnetostrictive wire. A comparator connected to the detection coil is used to detect the time t1 for the magnetostrictive wire to propagate and directly reach the detection coil, and the time t2 for the magnetostrictive wire to reflect at the open end and reach the detection coil. In the magnetostrictive signal detection circuit, a positive pulse output a d is first generated in the detection coil when the direct wave is applied to the detection coil, and a positive pulse output a d is generated in the detection coil when the reflected wave is applied to the detection coil. 2
A magnetostrictive signal detection circuit characterized in that a positive pulse br is added to the comparator having a constant threshold level, and the times t1 and t2 are detected from the output of the comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14969486U JPH04266Y2 (en) | 1986-09-30 | 1986-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14969486U JPH04266Y2 (en) | 1986-09-30 | 1986-09-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6355111U true JPS6355111U (en) | 1988-04-13 |
| JPH04266Y2 JPH04266Y2 (en) | 1992-01-07 |
Family
ID=31065146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14969486U Expired JPH04266Y2 (en) | 1986-09-30 | 1986-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04266Y2 (en) |
-
1986
- 1986-09-30 JP JP14969486U patent/JPH04266Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04266Y2 (en) | 1992-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH02218983A (en) | Ultrasonic sensor | |
| JPS6355110U (en) | ||
| JPS6355109U (en) | ||
| JPH04266Y2 (en) | ||
| KR870010528A (en) | Sound signal synchronous drive device | |
| JPS6172626U (en) | ||
| JPS62152282U (en) | ||
| JPS59166187U (en) | Ultrasonic distance measuring device | |
| JPS6042981U (en) | ultrasonic switch | |
| SU1569889A1 (en) | Device for suppression of noise in video tape recorder | |
| SU1700378A1 (en) | The method of fixation of the moment of acoustic signal entering and device for its realization | |
| JPH0355861Y2 (en) | ||
| JPS58129156U (en) | Oscilloscope sweep trigger pulse generation circuit | |
| JPS62197081U (en) | ||
| JPS6333492U (en) | ||
| JPS648680U (en) | ||
| JPH0187271U (en) | ||
| JPS6083984U (en) | Ultrasonic object detection device | |
| JPS60161880U (en) | Ultrasonic transceiver device | |
| JPH0443257U (en) | ||
| JPS6167568U (en) | ||
| JPH0383898U (en) | ||
| JPH0352689U (en) | ||
| JPS63101545U (en) | ||
| JPS6191179U (en) |