JPH03125597U - - Google Patents
Info
- Publication number
- JPH03125597U JPH03125597U JP3365190U JP3365190U JPH03125597U JP H03125597 U JPH03125597 U JP H03125597U JP 3365190 U JP3365190 U JP 3365190U JP 3365190 U JP3365190 U JP 3365190U JP H03125597 U JPH03125597 U JP H03125597U
- Authority
- JP
- Japan
- Prior art keywords
- resonant
- tube
- elastic plate
- resonance tube
- longitudinal direction
- 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
- 238000005452 bending Methods 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
Landscapes
- Transducers For Ultrasonic Waves (AREA)
Description
第1図は本考案の一実施例の共振送波器の縦断
面図、第2図a,bはそれぞれ圧電変換器2の平
面図と正面図、第3図a,bはそれぞれ弾性板1
2が共鳴管11の長手方向の中心にあるときと中
心からずれてあるときの本実施例の送波電圧感度
周波数特性を示す図、第4図は本実施例の指向特
性を示す図、第5図は従来の共振送波器の縦断面
図、第6図は第5図の従来の共振送波器20の送
波電圧感度周波数特性を示す図である。
1:共振送波器、2:圧電変換器、11:共鳴
管、12:弾性板、131,132:圧電変換素
子、14:溝、151,152,153,154
:圧電アクチユエータ、161,162,163
,164:ガイド、171,172:開口部、2
0:共振送波器、21:共鳴管、22:弾性板、
23:圧電変換素子、l1,l2,l3:距離、
fr0,fr1,fr2,fr3:共振周波数、
A:指向特性。
FIG. 1 is a longitudinal cross-sectional view of a resonant transmitter according to an embodiment of the present invention, FIGS. 2 a and b are a plan view and a front view of a piezoelectric transducer 2, respectively, and FIGS.
2 is a diagram showing the transmission voltage sensitivity frequency characteristics of this embodiment when it is at the center in the longitudinal direction of the resonance tube 11 and when it is offset from the center. FIG. 4 is a diagram showing the directivity characteristics of this embodiment. FIG. 5 is a longitudinal cross-sectional view of a conventional resonant transmitter, and FIG. 6 is a diagram showing the transmission voltage sensitivity frequency characteristics of the conventional resonant transmitter 20 of FIG. 1: Resonant transmitter, 2: Piezoelectric transducer, 11: Resonant tube, 12: Elastic plate, 13 1 , 13 2 : Piezoelectric conversion element, 14: Groove, 15 1 , 15 2 , 15 3 , 15 4
: Piezoelectric actuator, 16 1 , 16 2 , 16 3
, 16 4 : Guide, 17 1 , 17 2 : Opening, 2
0: Resonant transmitter, 21: Resonant tube, 22: Elastic plate,
23: Piezoelectric conversion element, l 1 , l 2 , l 3 : distance,
f r0 , f r1 , f r2 , f r3 : resonance frequency,
A: Directional characteristics.
Claims (1)
て、 発生させる音波の水中での波長の半分の長さと
ほぼ等しい長さの、両端に開口部を有する金属製
共鳴管と、 該共鳴管内の該共鳴管の長手方向の中央付近に
該長手方向に垂直に該共鳴管の内壁との間にすき
間が生じないように設けられた弾性板と、 該弾性板の両面にそれぞれ固着された曲げ振動
型圧電変換素子と、 該弾性板を該共鳴管の長手方向に移動させる移
動機構とを有する共振送波器。[Claims for Utility Model Registration] A resonant transmitter that generates and radiates sound waves into water, which is a metal having openings at both ends with a length approximately equal to half the underwater wavelength of the sound waves to be generated. an elastic plate provided in the resonance tube near the longitudinal center of the resonance tube and perpendicular to the longitudinal direction so that no gap is created between the resonance tube and the inner wall of the resonance tube; and the elastic plate. A resonant transmitter comprising: bending vibration type piezoelectric transducers fixed to both surfaces of the resonant tube; and a moving mechanism for moving the elastic plate in the longitudinal direction of the resonant tube.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3365190U JPH03125597U (en) | 1990-03-30 | 1990-03-30 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3365190U JPH03125597U (en) | 1990-03-30 | 1990-03-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH03125597U true JPH03125597U (en) | 1991-12-18 |
Family
ID=31537483
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3365190U Pending JPH03125597U (en) | 1990-03-30 | 1990-03-30 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH03125597U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013539254A (en) * | 2010-07-30 | 2013-10-17 | コーニンクレッカ フィリップス エヌ ヴェ | Thin film ultrasonic transducer |
-
1990
- 1990-03-30 JP JP3365190U patent/JPH03125597U/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013539254A (en) * | 2010-07-30 | 2013-10-17 | コーニンクレッカ フィリップス エヌ ヴェ | Thin film ultrasonic transducer |
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