JPH0419896U

JPH0419896U -

Info

Publication number: JPH0419896U
Application number: JP5648290U
Authority: JP
Priority date: 1990-05-31
Filing date: 1990-05-31
Publication date: 1992-02-19

Description

[Brief explanation of the drawing]

第１図ａ，ｂは本考案の一実施例に係る多周波
数対応型送受波器を示す図で、同図ａは横断面図
、同図ｂは同図ａにおけるＡ−Ａ線断面図、第２
図は本実施例における受波感度の周波数特性を示
す図、第３図ａ，ｂは高次用受波器により形成さ
れる受波ビームの指向性を示すパターン図、第４
図は従来の多周波数対応型送受波器を示す図であ
る。１……ハウジング、２……音響ゴム、３……高
出力振動子、４……マツチングトランス、５……
高次用受波器、６……チユーニングコイル、５１
……第一の受波素子群、５２……第二の受波素子
群。 1A and 1B are diagrams showing a multi-frequency compatible transducer according to an embodiment of the present invention, in which FIG. 1A is a cross-sectional view, FIG. Second
The figure shows the frequency characteristics of the receiving sensitivity in this embodiment, Figures 3a and b are pattern diagrams showing the directivity of the receiving beam formed by the high-order receiver, and Figure 4 shows the directivity of the receiving beam formed by the high-order receiver.
The figure shows a conventional multi-frequency compatible transducer. 1... Housing, 2... Acoustic rubber, 3... High output vibrator, 4... Matching transformer, 5...
High-order receiver, 6...Tuning coil, 51
...first wave receiving element group, 52...second wave receiving element group.

Claims

[Claims for Utility Model Registration] (1) A multi-frequency transceiver that performs wave transmitting and receiving operations using the fundamental resonance mode and higher-order resonance mode frequencies of a high-output vibrator that converts electrical signals into high-output ultrasonic waves. a matching transformer for matching impedance between the high-output vibrator and the transmitter; and an acoustic rubber that transmits the ultrasonic waves sent out from the high-output vibrator and maintains watertightness. The high-order wave receiver includes a high-order wave receiver that resonates at a frequency corresponding to a high-order resonance mode of the high-power vibrator, and a tuning coil that tunes the high-order wave receiver. A multi-frequency transducer is characterized in that a plurality of elements whose fundamental resonance mode is a higher-order resonance mode of the high-output vibrator are linearly arranged. (2) The first and second wave receiving element groups are used in the above-mentioned high-order wave receiver, and these first and second wave receiving element groups are arranged orthogonally to form a cross fan beam. The multi-frequency compatible transducer according to claim 1.