JPS58119299U - Ultrasonic transducer using polymer piezoelectric film - Google Patents
Ultrasonic transducer using polymer piezoelectric filmInfo
- Publication number
- JPS58119299U JPS58119299U JP1451782U JP1451782U JPS58119299U JP S58119299 U JPS58119299 U JP S58119299U JP 1451782 U JP1451782 U JP 1451782U JP 1451782 U JP1451782 U JP 1451782U JP S58119299 U JPS58119299 U JP S58119299U
- Authority
- JP
- Japan
- Prior art keywords
- ultrasonic transducer
- piezoelectric film
- transformer
- polymer piezoelectric
- cable
- 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
Landscapes
- Transducers For Ultrasonic Waves (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は、中心周波数２．２５ ＭＨｚのＰＺＴを用い
た電気音響変換素子の水中駆動時の周波数と直列インピ
ーダンス特性の関係を示す図、第２図は、ＰＶＤＦから
なる高分子圧電膜を用いた電気音響変換素子の水中駆動
時の周波数と直列インピーダンス特性の関係を示す図、
第３図は、本考案に係る超音波トランスデユーサ−の一
実施例を示す概略構成図、第４図は、高分子圧電膜から
なる電気音響変換素子を有する超音波トランスデユーサ
−を。
整合回路なしで直接水中パルス駆動した時の入射信号の
応答時間特性を示す図、第５図は、第３図に示した本考
案に係る超音波トランスデユーサ−を水中駆動した時の
入射信号の応答時間特性を示す図、第６図は、ＰＺＴを
電気音響変換素子とする゛超音波トランスデユーサーを
水中駆動した時の入射信号の応答時間特性を示す図、第
７図は、第３図に示した本考案のシングル型超音波トラ
ンスデユーサ−のより具体的な構成を示す縦断面図、第
８図は第３図に示した本考案のリニア型、センター型超
音波トランスデユーサ−のより具体的な構成を示す縦断
面図である。
１０・・・・・・電気音響変換素子、１１・・・・・・
変成器、１２・・・・・・コネクタ、１３・・・・・・
ケーブル、１４・・・・・・インダクター、１５・・・
・・・駆動回路。 −１
第２図
一−Ｕ、
４
Ｃ：ＬＸ２６Figure 1 shows the relationship between frequency and series impedance characteristics when an electroacoustic transducer using PZT with a center frequency of 2.25 MHz is driven underwater. A diagram showing the relationship between frequency and series impedance characteristics when an electroacoustic transducer is driven underwater,
FIG. 3 is a schematic diagram showing an embodiment of an ultrasonic transducer according to the present invention, and FIG. 4 shows an ultrasonic transducer having an electroacoustic transducer made of a piezoelectric polymer film. Figure 5 shows the response time characteristics of the incident signal when the ultrasonic transducer according to the present invention shown in Figure 3 is driven underwater directly without a matching circuit. Figure 6 is a diagram showing the response time characteristics of an incident signal when an ultrasonic transducer using PZT as an electroacoustic transducer is driven underwater. A vertical cross-sectional view showing a more specific configuration of the single-type ultrasonic transducer of the present invention shown in the figure, and FIG. - is a vertical cross-sectional view showing a more specific configuration. 10... Electro-acoustic conversion element, 11...
Transformer, 12... Connector, 13...
Cable, 14... Inductor, 15...
...Drive circuit. -1 Fig. 2-U, 4 C: LX26
Claims (1)
変換素子を有してなる超音波トランスデユーサ−におい
て、上記素子の構成によって定まる動作中心周波数にお
ける該素子の並列抵抗をＲｐ、および並列容量性リアク
タンスをＸｐとするとき、上記素子とケーブルを含む駆
動電源との間で、かつ、上記素子の直前に該素子の並列
抵抗’Ｒｐと上記駆動電源のインピータンスとを整合さ
せるための変成器を該変成器の２次側と上記素子とが結
合する関係に設け、さらに、上記並列容量性リアクタン
スＸｐと実質的に等価な誘導性リアクタンスを上記変成
器の１次側に結線されたケーブルと駆動電源との間に付
加したことを特徴とする高分子圧電膜を用いた超音波ト
ランスデユーサＯIn an ultrasonic transducer having an electroacoustic transducer including a small diameter or small area polymeric piezoelectric film, the parallel resistance of the element at the operating center frequency determined by the configuration of the element is Rp, and When the parallel capacitive reactance is Xp, between the element and the drive power source including the cable, and immediately before the element, there is a A transformer is provided in a relationship in which the secondary side of the transformer and the element are coupled, and an inductive reactance substantially equivalent to the parallel capacitive reactance Xp is connected to the primary side of the transformer. Ultrasonic transducer O using a polymer piezoelectric film characterized by being added between a cable and a driving power source
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1451782U JPS58119299U (en) | 1982-02-04 | 1982-02-04 | Ultrasonic transducer using polymer piezoelectric film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1451782U JPS58119299U (en) | 1982-02-04 | 1982-02-04 | Ultrasonic transducer using polymer piezoelectric film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58119299U true JPS58119299U (en) | 1983-08-13 |
Family
ID=30026983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1451782U Pending JPS58119299U (en) | 1982-02-04 | 1982-02-04 | Ultrasonic transducer using polymer piezoelectric film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58119299U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49133017A (en) * | 1972-11-17 | 1974-12-20 |
-
1982
- 1982-02-04 JP JP1451782U patent/JPS58119299U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49133017A (en) * | 1972-11-17 | 1974-12-20 |
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