JPH0243667U - - Google Patents
Info
- Publication number
- JPH0243667U JPH0243667U JP12189888U JP12189888U JPH0243667U JP H0243667 U JPH0243667 U JP H0243667U JP 12189888 U JP12189888 U JP 12189888U JP 12189888 U JP12189888 U JP 12189888U JP H0243667 U JPH0243667 U JP H0243667U
- Authority
- JP
- Japan
- Prior art keywords
- ultrasonic transducer
- digital waveform
- under test
- switch
- voltage
- 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
- 238000011156 evaluation Methods 0.000 claims description 2
- 230000001052 transient effect Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Transducers For Ultrasonic Waves (AREA)
Description
第１図はこの考案による超音波振動子の特性評
価装置の実施例を示すブロツク図、第２図はこの
考案の測定原理を示す回路図、第３図はこの考案
により磁歪振動子を測定するための基本構成を示
す回路図、第４図はこの考案の実施例による過渡
応答電流と周波数スペクトラムの例を示す波形図
、第５図は第１図の実施例におけるスイツチ駆動
回路の具体例を示す回路図である。
Fig. 1 is a block diagram showing an embodiment of the ultrasonic transducer characteristic evaluation device based on this invention, Fig. 2 is a circuit diagram showing the measurement principle of this invention, and Fig. 3 is a method for measuring magnetostrictive transducers using this invention. 4 is a waveform diagram showing an example of the transient response current and frequency spectrum according to the embodiment of this invention. FIG. 5 is a specific example of the switch drive circuit in the embodiment of FIG. 1. FIG.
Claims (1)
を供給するため直流電源と、 その直流電源と被試験超音波振動子との間の信
号路を開閉するスイツチと、 そのスイツチの動作を制御するスイツチ駆動回
路と、 その被試験超音波振動子から過渡電流が流され
て両端の電圧を検出するための検出抵抗と、 その検出抵抗の端子電圧をデジタル値に変換し
て記憶するデジタル波形記憶装置と、 そのデジタル波形記憶装置に記憶されたデジタ
ル波形値をフーリエ変換する高速フーリエ変換器
と、 により構成される超音波振動子の特性評価装置
。[Scope of Claim for Utility Model Registration] A DC power supply for supplying DC voltage or DC current to the ultrasonic transducer under test, a switch for opening and closing a signal path between the DC power supply and the ultrasonic transducer under test, A switch drive circuit that controls the operation of the switch, a detection resistor that detects the voltage at both ends when a transient current is passed from the ultrasonic transducer under test, and a terminal voltage of the detection resistor that converts it into a digital value. An ultrasonic transducer characteristic evaluation device comprising: a digital waveform storage device that stores digital waveform values; and a fast Fourier transformer that performs Fourier transform on the digital waveform values stored in the digital waveform storage device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12189888U JPH0243667U (en) | 1988-09-19 | 1988-09-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12189888U JPH0243667U (en) | 1988-09-19 | 1988-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0243667U true JPH0243667U (en) | 1990-03-26 |
Family
ID=31369330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12189888U Pending JPH0243667U (en) | 1988-09-19 | 1988-09-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0243667U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005296430A (en) * | 2004-04-14 | 2005-10-27 | Aloka Co Ltd | Ultrasonic surgical system |
-
1988
- 1988-09-19 JP JP12189888U patent/JPH0243667U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005296430A (en) * | 2004-04-14 | 2005-10-27 | Aloka Co Ltd | Ultrasonic surgical system |
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