JPH0832103B2 - Electromagnetic sound wave transmitter and receiver - Google Patents
Electromagnetic sound wave transmitter and receiverInfo
- Publication number
- JPH0832103B2 JPH0832103B2 JP2115576A JP11557690A JPH0832103B2 JP H0832103 B2 JPH0832103 B2 JP H0832103B2 JP 2115576 A JP2115576 A JP 2115576A JP 11557690 A JP11557690 A JP 11557690A JP H0832103 B2 JPH0832103 B2 JP H0832103B2
- Authority
- JP
- Japan
- Prior art keywords
- conductor
- predetermined length
- sound wave
- magnetic field
- length 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.)
- Expired - Fee Related
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、水中における音波を発生し、又到来音波
を受信する電磁型音波送信器及び受信器に係り、特に、
水中の磁界中に絶縁体で一部が被覆された導体を該導体
の所定長さ方向が磁界に対して直交するように配置し、
該導体に磁界の方向及び該導体の所定長さ方向に対して
直交方向に交流電流を流して音波を発生する構成にし、
又該導体に磁界の方向及び該導体の所定流さ方向に対し
て直交方向に生じる起電力を検出して音波を受信する構
成にすることにより、低周波数帯を含む比較的広い範囲
に亘る周波数の音波を発生させ、又音波を受信すること
のできる電磁型音波送信器及び受信器に関するものであ
る。Description: TECHNICAL FIELD The present invention relates to an electromagnetic sound wave transmitter and receiver that generate sound waves in water and receive incoming sound waves, and more particularly,
A conductor partially covered with an insulator in a magnetic field in water is arranged so that a predetermined length direction of the conductor is orthogonal to the magnetic field,
An alternating current is applied to the conductor in a direction perpendicular to the direction of the magnetic field and the predetermined length of the conductor to generate a sound wave,
In addition, the electromotive force generated in the conductor in the direction perpendicular to the direction of the magnetic field and the predetermined flow direction of the conductor is detected to receive a sound wave, so that the frequency of a wide range including a low frequency band can be detected. The present invention relates to an electromagnetic wave transmitter and receiver capable of generating and receiving sound waves.
従来、圧電効果や磁気ひずみ効果を用いた超音波発振
器が知られている。Conventionally, an ultrasonic oscillator using the piezoelectric effect or the magnetostrictive effect is known.
圧電効率を用いた超音波発振器の原理は、水晶、セラ
ミックなどの圧電材料からなる圧電振動子に交流電圧を
加えると、圧電振動子の厚みが伸縮して超音波を発生す
るものである。発生する超音波の波長は圧電振動子の厚
みに比例する。The principle of an ultrasonic oscillator using piezoelectric efficiency is that when an AC voltage is applied to a piezoelectric vibrator made of a piezoelectric material such as quartz or ceramic, the thickness of the piezoelectric vibrator expands and contracts to generate ultrasonic waves. The wavelength of the generated ultrasonic wave is proportional to the thickness of the piezoelectric vibrator.
磁気ひずみ効果を用いた超音波発振器の原理は、ニッ
ケル、鉄アルミニウム合金、フェライトなどの磁気ひず
み材料からなる磁気ひずみ振動子にコイルを巻き、これ
に交流電流を流すと、発生する磁界により磁気ひずみ振
動子は伸縮して超音波を発生するものである。The principle of the ultrasonic oscillator using the magnetostrictive effect is that a coil is wound around a magnetostrictive oscillator made of a magnetostrictive material such as nickel, iron-aluminum alloy, and ferrite, and when an alternating current is passed through it, the magnetic field generated causes magnetostriction. The vibrator expands and contracts to generate ultrasonic waves.
この磁気ひずみ効果を用いた超音波発振器は、圧電効
果を用いた超音波発振器に比べて強力な超音波を発生さ
せることができる。The ultrasonic oscillator using the magnetostrictive effect can generate stronger ultrasonic waves than the ultrasonic oscillator using the piezoelectric effect.
しかしながら、前述の圧電効果を用いた超音波発振器
は、発生する超音波の波長が圧電振動子の厚みに比例す
るため、波長が長い低周波数の音波を発生させたい場合
には、圧電振動子の厚みをかなり大きくしなければなら
なかった。そして、このための方法として、例えば異な
る材料をサンドイッチ状に積層しており、その構造は複
雑であり、又深海で使用する場合には深海の静圧下にお
けるバッキング（Backing）も困難である等の欠点があ
った。However, in the ultrasonic oscillator using the piezoelectric effect described above, the wavelength of the generated ultrasonic wave is proportional to the thickness of the piezoelectric vibrator. Therefore, if you want to generate a low frequency sound wave with a long wavelength, I had to increase the thickness considerably. And as a method for this, for example, different materials are laminated in a sandwich form, the structure is complicated, and when used in the deep sea, backing under static pressure in the deep sea is difficult. There was a flaw.
また、磁気ひずみ効果を用いた超音波発振器は、磁気
ひずみ振動子にコイルを巻線しなければならず、圧電振
動子に比べその分構造が複雑なる欠点があった。In addition, the ultrasonic oscillator using the magnetostrictive effect has a drawback that the coil must be wound around the magnetostrictive oscillator, which makes the structure more complicated than that of the piezoelectric oscillator.
この発明は、上記のような問題点に鑑み、その問題点
を解決すべく創案されたものであって、その目的とする
ところは、水中の磁界中に絶縁体で一部が被覆された導
体を該導体の所定長さ方向が磁界に対して直交するよう
に配置し、該導体に磁界の方向及び該導体の所定長さ方
向に対して直交方向に交流電流を流して音波を発生する
構成にし、又該導体に磁界の方向及び該導体の所定長さ
方向に対して直交方向に生じる起電力を検出して音波を
受信する構成にすることにより、低周波数帯を含む比較
的広い範囲に亘る周波数の音波を発生させ、又音波を受
信することのできる電磁型音波送信器及び受信器を提供
することにある。The present invention was made in view of the above problems to solve the problems, and an object of the invention is to provide a conductor partially covered with an insulator in a magnetic field in water. Is arranged such that a predetermined length direction of the conductor is orthogonal to the magnetic field, and an alternating current is passed through the conductor in a direction orthogonal to the direction of the magnetic field and the predetermined length direction of the conductor to generate a sound wave. In addition, the electromotive force generated in the conductor in the direction perpendicular to the magnetic field direction and the predetermined length direction of the conductor is detected to receive a sound wave, so that a relatively wide range including a low frequency band can be obtained. An object of the present invention is to provide an electromagnetic wave transmitter and receiver capable of generating and receiving sound waves having frequencies.
以上の目的を達成するために、請求項１記載の発明
は、内部が充填され立体型の固体状の躯体で所定長さを
有する導体を形成し、所定長さ方向の両端面を除く該導
体の外面を絶縁体で被覆し、水中の磁界中に絶縁体で一
部が被覆された該導体を該導体の所定長さ方向が磁界に
対して直交するように配置し、該導体に磁界の方向及び
該導体の所定長さ方向に対して直交方向に交流電流を流
して音波を発生する構成よりなる。In order to achieve the above object, the invention according to claim 1 forms a conductor having a predetermined length by a three-dimensional solid-state body whose inside is filled, and excluding both end faces in a predetermined length direction. The outer surface of is covered with an insulator, and the conductor partially covered with an insulator in a magnetic field in water is arranged so that the predetermined length direction of the conductor is orthogonal to the magnetic field. Direction and a direction perpendicular to the predetermined length direction of the conductor, an alternating current is applied to generate an acoustic wave.
ここで、好ましい態様として、音波を発生する導体の
所定長さ方向の両端面の一方に閉塞材を密着して、該導
体の所定長さ方向の片方の端面を閉塞材で被覆して密閉
するのがよい。Here, as a preferred mode, a closing member is closely adhered to one of both end faces in the predetermined length direction of the conductor that generates sound waves, and one end face in the predetermined length direction of the conductor is covered with the closing member and hermetically sealed. Is good.
また、請求項３記載の発明は、内部が充填された立体
型の固体状の躯体で所定長さを有する導体を形成し、所
定長さ方向の両端面を除く該導体の外面を絶縁体で被覆
し、水中の磁界中に絶縁体で一部が被覆された該導体を
該導体の所定長さ方向が磁界に対して直交するように配
置し、該導体に磁界の方向及び該導体の所定長さ方向に
対して直交方向に生じる起電力を検出して音波を受信す
る構成よりなる。Further, the invention according to claim 3 forms a conductor having a predetermined length by a three-dimensional solid body having the inside filled, and the outer surface of the conductor except for both end faces in the predetermined length direction is made of an insulator. The conductor, which is covered and partially covered with an insulator in a magnetic field in water, is arranged so that a predetermined length direction of the conductor is orthogonal to the magnetic field, and the direction of the magnetic field and the predetermined direction of the conductor are set in the conductor. It is configured to detect an electromotive force generated in a direction orthogonal to the length direction and receive a sound wave.
以上のような構成を有するこの発明は次のように作用
する。The present invention having the above configuration operates as follows.
すなわち、請求項１記載の発明に係る電磁型音波送信
器は、内部が充填され立体型の固体状の躯体で所定長さ
を有する導体を形成し、所定長さ方向の両端面を除く該
導体の外面を絶縁体で被覆し、水中の磁界中に絶縁体で
一部が被覆された該導体を該導体の所定長さ方向が磁界
に対して直交するように配置し、該導体に磁界の方向及
び該導体の所定長さ方向に対して直交方向に交流電流を
流して音波を発生する構成により、磁界及び交流電流の
方向に対して直交方向の該導体の所定上さ方向に音波を
発生することができるように作用し、また、所定長さの
固体状の該導体の長さを変えることにより、所望の音
波、低周波数帯を含む比較的広い範囲に亘る周波数の音
波を発生することができるように作用する。That is, in the electromagnetic sound wave transmitter according to the invention of claim 1, a conductor having a predetermined length is formed by a three-dimensional solid body that is filled inside and the conductor except for both end faces in the predetermined length direction. The outer surface of is covered with an insulator, and the conductor partially covered with an insulator in a magnetic field in water is arranged so that the predetermined length direction of the conductor is orthogonal to the magnetic field. Direction and a predetermined length direction of the conductor, by generating an acoustic wave by passing an alternating current in a direction orthogonal to the direction of the magnetic field and the alternating current, generate a sound wave in a predetermined upward direction of the conductor By generating a desired sound wave and a sound wave having a relatively wide frequency range including a low frequency band by changing the length of the solid conductor having a predetermined length. Act to be able to.
また、請求項３記載の発明に係る電磁型音波受信器
は、内部が充填され立体型の固体状の躯体で所定長さを
有する導体を形成し、所定長さ方向の両端面を除く該導
体の外面を絶縁体で被覆し、水中の磁界中に絶縁体で一
体が被覆された該導体を該導体の所定長さ方向が磁界に
対して直交するように配置し、該導体に磁界の方向及び
該導体の所定長さ方向に対して直交方向に生じる起電力
を検出して音波を受信する構成により、水中の音波を受
信することができるように作用し、また、所定長さの固
体状の該導体の長さを変えることにより、所望の音波、
低周波数帯を含む比較的広い範囲に亘る周波数の音波を
受信することができるように作用する。Further, in the electromagnetic sound wave receiver according to the invention of claim 3, a conductor having a predetermined length is formed by a three-dimensional solid body filled inside, and the conductor except for both end faces in the predetermined length direction is formed. The outer surface of is covered with an insulator, and the conductor integrally covered with the insulator in a magnetic field in water is arranged so that the predetermined length direction of the conductor is orthogonal to the magnetic field. And a structure for detecting an electromotive force generated in a direction orthogonal to a predetermined length direction of the conductor to receive a sound wave, so that the sound wave in the water can be received, and a solid state of a predetermined length is formed. By changing the length of the conductor of
It works so as to be able to receive sound waves of a relatively wide range of frequencies including a low frequency band.
以下、図面に記載の実施例に基づいてこの発明をより
具体的に説明する。Hereinafter, the present invention will be described more specifically based on the embodiments illustrated in the drawings.
−第１実施例− ここで、第１図は電磁型音波送信器の概略断面図、第
２図は電磁型音波送信器の概略斜視図、第３図は電磁型
音波送信器の概略側断面図である。First Embodiment Here, FIG. 1 is a schematic sectional view of an electromagnetic sound wave transmitter, FIG. 2 is a schematic perspective view of an electromagnetic sound wave transmitter, and FIG. 3 is a schematic side cross section of an electromagnetic sound wave transmitter. It is a figure.
図において、電磁型音波送信器１は水中で所望の音
波、低周波数帯を含む比較的広い範囲に亘る周波数の音
波を発生させる機器で、電磁型音波送信器１は磁界を作
る磁石２、導体３、交流電源４などから構成されてい
る。In the figure, an electromagnetic sound wave transmitter 1 is a device that generates a desired sound wave and a sound wave having a frequency in a relatively wide range including a low frequency band in water. The electromagnetic sound wave transmitter 1 is a magnet 2 that creates a magnetic field, and a conductor. 3, an AC power supply 4 and the like.
電磁型音波送信器１を構成する導体３は内部が充填さ
れた固体の躯体形状からなっており、導体３は密度及び
音速が水に近い固体材料、例えばアルミニウムが使用さ
れている。この導体３は磁界中に配置されている。The conductor 3 forming the electromagnetic wave transmitter 1 has a solid core shape with the inside filled, and the conductor 3 is made of a solid material having a density and sound velocity close to that of water, for example, aluminum. This conductor 3 is arranged in a magnetic field.
即ち、導体３は磁石２のＮ極とＳ極の間の空間に配置
されている。導体３の幅方向の左右側面には絶縁体５を
介して磁石２のＮ極及びＳ極が位置している。導体３と
磁石２の間には絶縁体５が介装されており、導体３は磁
石２のＮ極及びＳ極と直には接していない。この絶縁体
５は導体３に流れる電流の一部が磁石２に流れるのを防
ぐ機能を果たしている。That is, the conductor 3 is arranged in the space between the north pole and the south pole of the magnet 2. The N pole and the S pole of the magnet 2 are located on the left and right side surfaces of the conductor 3 in the width direction via an insulator 5. An insulator 5 is interposed between the conductor 3 and the magnet 2, and the conductor 3 is not in direct contact with the N pole and the S pole of the magnet 2. The insulator 5 has a function of preventing a part of the current flowing through the conductor 3 from flowing through the magnet 2.
磁界の方向に平行な導体３の上面及び下面には平板状
の交流電流分散盤６が各々接した状態で取付けられてい
る。上下の各交流電流分散盤６には交流電源４の端子が
各々接続されており、交流電流は交流電流分散盤６を流
れて導体３を流れる。この交流電流分散盤６は導体３の
材料より導電性の高い材料から構成されており、導体３
を流れる交流電流が導体３の全域を可能な限り均一に流
れるように、交流電源４からの交流電流を広く分散させ
る機能を有している。Flat plate-shaped AC current distribution plates 6 are attached in contact with the upper surface and the lower surface of the conductor 3 parallel to the magnetic field direction. The terminals of the AC power supply 4 are connected to the upper and lower AC current distribution plates 6, respectively, and the AC current flows through the AC current distribution plate 6 and the conductor 3. The AC current distribution board 6 is made of a material having higher conductivity than the material of the conductor 3.
It has a function of widely dispersing the alternating current from the alternating current power source 4 so that the alternating current flowing through the conductor 3 flows as uniformly as possible throughout the conductor 3.
導体３の上下の交流電流分散盤６の更に外側の上下に
は上記の絶縁体５が各々延設されている。絶縁体５は内
部が中空な角型の筒状からなっており、この絶縁体５の
中空な内部に上記の導体３及び交流電流分散盤６が配設
されていて、導体３と交流電流分散盤６の接続が図ら
れ、又前述した導体３と磁石２との接触が防がれてい
る。このように、導体３はその幅方向の左右両側面及び
上下両面が絶縁体５で被覆されている。The insulators 5 are provided above and below the AC current distribution board 6 above and below the conductor 3, respectively. The insulator 5 has a hollow rectangular tubular shape, and the conductor 3 and the AC current distribution board 6 are disposed inside the hollow interior of the insulator 5 to disperse the conductor 3 and the AC current. The board 6 is connected, and the above-mentioned contact between the conductor 3 and the magnet 2 is prevented. In this way, the conductor 3 is covered with the insulator 5 on both the left and right side surfaces and the upper and lower surfaces thereof in the width direction.
また、導体３の長さ方向の両端面から音波が発生する
が、この両端面の一方には閉塞材７が密着して設けられ
ていて、１方向にのみ音波を送信できるようになってい
る。閉塞材７は柔らかい材質又は固い材質のいずれから
なるものでもよい。この閉塞材７によって導体３の長さ
方向の一方の端面は密閉されており、電磁型音波送信器
１は開放された長さ方向の一端面から音波を水中に発生
する構造になっている。そして、この導体３の長さを変
更することにより、低周波数帯を含む比較的広い範囲に
亘る周波数の音波を発生させることが可能となる。In addition, sound waves are generated from both end surfaces of the conductor 3 in the length direction, but a blocking member 7 is provided in close contact with one of the both end surfaces so that the sound waves can be transmitted only in one direction. . The occluding material 7 may be made of either a soft material or a hard material. One end face in the length direction of the conductor 3 is sealed by the block member 7, and the electromagnetic sound wave transmitter 1 has a structure in which sound waves are generated in water from the opened one end face in the length direction. Then, by changing the length of the conductor 3, it becomes possible to generate sound waves having a frequency over a relatively wide range including the low frequency band.
ところで、１方向にのみ音波を送信するときには、上
述のように導体３の長さ方向の両端面の一方をバッキン
グする必要がある。そして、電磁型音波送信器１が深海
に設置されるときには深海においては静水圧が大きく、
バッキング方法が問題となるが、この発明の構成によれ
ば、導体３の端面に閉塞材７を密着するのみで、そのバ
ッキングを容易に行うことができる。By the way, when transmitting a sound wave only in one direction, it is necessary to back one of both end surfaces in the length direction of the conductor 3 as described above. When the electromagnetic sound wave transmitter 1 is installed in the deep sea, the hydrostatic pressure is large in the deep sea,
Although the backing method poses a problem, according to the configuration of the present invention, the backing can be easily performed only by bringing the blocking member 7 into close contact with the end surface of the conductor 3.
次に、上記実施例の構成による作動について、第４図
の作動説明図に基づいて説明する。Next, the operation of the configuration of the above embodiment will be described with reference to the operation explanatory view of FIG.
交流電源４から交流電流を流すと、交流電流は交流電
流分散盤６で分散されて導体３内の全域をほぼ均一に流
れる。このとき、導体３は磁界中に設置されているた
め、導体３には導体３の長さ方向に電磁力Ｆが働く。原
理的には、 Ｆ＝Ｉ×Bl ここで、I:交流電流 B:磁束密度 l:導体の長さ 上式から、交流電流Ｉが小さくても、磁束Blを大きく
すると、導体３に働く電磁力Ｆを大きくすることができ
る。When an alternating current is made to flow from the alternating current power source 4, the alternating current is dispersed by the alternating current distribution board 6 and flows substantially uniformly throughout the conductor 3. At this time, since the conductor 3 is installed in the magnetic field, the electromagnetic force F acts on the conductor 3 in the length direction of the conductor 3. In principle, F = I × Bl where I: AC current B: Magnetic flux density l: Length of conductor From the above equation, even if the AC current I is small, if the magnetic flux Bl is increased, the electromagnetic force acting on the conductor 3 The force F can be increased.
従って、磁束Blを大きくすることにより、小さな交流
電流Ｉで音波を発生させることが可能となる。Therefore, by increasing the magnetic flux Bl, it is possible to generate a sound wave with a small alternating current I.
また、導体３内部に生じる振動の微分方程式は、 で表される。Moreover, the differential equation of the vibration generated inside the conductor 3 is It is represented by.
ここで、vx:導体３の内部の（振動）速度 t:時間 ρ0:導体３の密度 σ0:導体の電導率 Bz:磁束密度 Ey:電解の強さ c:導体３中での音速 そして、式の微分方程式を解くと、導体３内部のｘ
点での長さ方向の（振動）速度vxは、 で表される。Here, v x : (Vibration) velocity inside conductor 3 t: Time ρ 0 : Density of conductor 3 σ 0 : Conductivity of conductor B z : Magnetic flux density E y : Strength of electrolysis c: In conductor 3 The speed of sound and when the differential equation is solved, x in the conductor 3
The longitudinal (vibration) velocity v x at a point is It is represented by.
ここで、lx:導体３の長さ ω：交流の周波数 v1:x＝０での速度 v2:x＝lxでの速度 p1:導体３の長さ方向の水圧 j:虚数 式より、導体３内部の（振動）速度vxの値は、ｘ点
の位置により異なり、又その正負も異なる。従って、導
体３はその内部の各点で長さ方向に伸長又は収縮してお
り、導体３はその内部で長さ方向に振動を生じているこ
とがわかる。そして、この導体３の内部振動は導体３の
長さ方向の開放された両端面から所定の周波数の音波を
水中に発生する。Here, l x : Length of conductor 3 ω: Frequency of alternating current v 1 : Speed at x = 0 v 2 : Speed at x = l x p 1 : Water pressure in the length direction of conductor 3 j: Imaginary number From the equation, the value of the (vibration) velocity v x inside the conductor 3 differs depending on the position of the point x, and its positive / negative also differs. Therefore, it can be seen that the conductor 3 expands or contracts in the length direction at each point inside the conductor 3, and the conductor 3 vibrates in the length direction inside the conductor 3. The internal vibration of the conductor 3 causes sound waves of a predetermined frequency to be generated in water from both end surfaces of the conductor 3 which are open in the length direction.
また、式より導体３内部の（振動）速度vxの値は、
導体３の長さlxによって変わることがわかり、導体３の
長さを変化させることによって、導体３内部の（振動）
速度vx、つまり音波の周波数を変えることができること
がわかる。From the equation, the value of (vibration) velocity v x inside the conductor 3 is
It can be seen that it changes depending on the length l x of the conductor 3, and by changing the length of the conductor 3, (vibration) inside the conductor 3
It is understood that the velocity v x , that is, the frequency of the sound wave can be changed.
−第２実施例− ここで、第５図は電磁型音波受信器の概略断面図、第
６図は電磁型音波受信器の概略斜視図である。Second Embodiment Here, FIG. 5 is a schematic cross-sectional view of the electromagnetic sound wave receiver, and FIG. 6 is a schematic perspective view of the electromagnetic sound wave receiver.
図において、電磁型音波受信器８は水中で所望の音
波、低周波数帯を含む比較的広い範囲に亘る周波数の音
波を受信する機器であり、電磁型音波受信器８は磁界を
作る磁石２、導体３、交流電圧検出器９などから構成さ
れている。磁石２、導体３の配置関係は前記第１実施例
と同一であり、異なるのは交流電源４の代わりに交流電
圧検出器９が設けられていることである。In the figure, an electromagnetic sound wave receiver 8 is a device that receives a desired sound wave and a sound wave having a relatively wide frequency range including a low frequency band in water. The electromagnetic sound wave receiver 8 is a magnet 2 that creates a magnetic field. The conductor 3 and the AC voltage detector 9 are included. The arrangement relationship between the magnet 2 and the conductor 3 is the same as in the first embodiment, except that an AC voltage detector 9 is provided instead of the AC power supply 4.
電磁型音波受信器８はその作動原理が前記第１実施例
の電磁型音波送信器１と逆の関係にある。即ち、音波を
受けた導体３が微小振動を起こし、磁界中に配置されて
いる導体３の微小振動によって、導体３には磁界の方向
に対して直交方向に起電力Ｅが発生する。原理的には、 Ｅ＝ｖ×Bl ここで、v:導体内部の振動速度 B:磁束密度 l:導体の長さ E:起電力 この起電力Ｅを交流電圧検出器９で測定することによ
り、音波を受信することが可能となる。The operation principle of the electromagnetic sound wave receiver 8 is opposite to that of the electromagnetic sound wave transmitter 1 of the first embodiment. That is, the conductor 3 that receives a sound wave causes a minute vibration, and due to the minute vibration of the conductor 3 arranged in the magnetic field, an electromotive force E is generated in the conductor 3 in a direction orthogonal to the direction of the magnetic field. In principle, E = v × Bl where v: vibration speed inside the conductor B: magnetic flux density l: conductor length E: electromotive force By measuring this electromotive force E with the AC voltage detector 9, It becomes possible to receive sound waves.
なお、この発明は上記実施例に限定されるものではな
く、この発明の精神を逸脱しない範囲で種々の改変をな
し得ることは勿論である。The present invention is not limited to the above embodiments, and it goes without saying that various modifications can be made without departing from the spirit of the present invention.
以上の記載より明らかなように、請求項１記載の発明
に係る電磁型音波送信器によれば、内部が充填され立体
型の固体状の躯体で所定長さを有する導体を形成し、所
定長さ方向の両端面を除く該導体の外面を絶縁体で被覆
し、水中の磁界中に絶縁体で一部が被覆された該導体を
該導体の所定長さ方向が磁界に対して直交するように配
置し、該導体に磁界の方向及び該導体の所定長さ方向に
対して直交方向に交流電流を流して音波を発生する構成
にすることにより、簡単な構造で、又導体の長さを変更
することによって、低周波数帯を含む比較的広い範囲に
亘る周波数の音波を容易に発生することができる。As is clear from the above description, according to the electromagnetic sound wave transmitter of the first aspect of the present invention, the conductor having a predetermined length is formed by the solid body of the three-dimensional type having the inside filled therein and the predetermined length. The outer surface of the conductor except for both end faces in the depth direction is covered with an insulator, and the conductor partially covered with the insulator in a magnetic field in water is arranged so that the predetermined length direction of the conductor is orthogonal to the magnetic field. And a structure that generates an acoustic wave by passing an alternating current in the conductor in a direction orthogonal to the direction of the magnetic field and a predetermined length direction of the conductor, and has a simple structure. By changing it, it is possible to easily generate sound waves of a frequency over a relatively wide range including the low frequency band.
また、請求項２記載の発明によれば、音波を発生する
導体の所定長さ方向の両端面の一方に閉塞材を密着し
て、該導体の所定長さ方向の片方の端面を閉塞材で被覆
して密閉したことにより、音波が一方向にのみ出るよう
にすることができると共に、深海のように静水圧が非常
に大きい箇所では、音波が一方向にのみ出るようにする
ためのバッキング方法が問題になるが、この請求項２記
載の発明の構成によれば、導体の端面に閉塞材を密着す
るのみで、そのバッキングを容易に行うことができる。According to the second aspect of the present invention, a closing member is adhered to one of both end faces of the conductor which generates sound waves in the predetermined length direction, and one end face of the conductor in the predetermined length direction is covered with the closing member. By covering and sealing, sound waves can be emitted only in one direction, and in a place where the hydrostatic pressure is very large, such as in the deep sea, a backing method that allows sound waves to be emitted only in one direction. However, according to the configuration of the invention described in claim 2, the backing can be easily performed only by bringing the closing member into close contact with the end surface of the conductor.
更に、請求項３記載の発明に係る電磁型音波受信器に
よれば、内部が充填され立体型の固体状の躯体で所定長
さを有する導体を形成し、所定長さ方向の両端面を除く
該導体の外面を絶縁体で被覆し、水中の磁界中に絶縁体
で一部が被覆された該導体を該導体の所定長さ方向が磁
界に対して直交するように配置し、該導体に磁界の方向
及び該導体の所定長さ方向に対して直交方向に生じる起
電力を検出して音波を受信する構成にすることにより、
簡単な構造で、又導体の長さを変更することによって、
低周波数帯を含む比較的広い範囲に亘る周波数の音波を
容易に受信することができる。Further, according to the electromagnetic type sound wave receiver of the third aspect of the present invention, a conductor having a predetermined length is formed by a three-dimensional solid-state skeleton body whose inside is filled, and both end surfaces in the predetermined length direction are excluded. The outer surface of the conductor is covered with an insulator, and the conductor partially covered with the insulator in a magnetic field in water is arranged so that a predetermined length direction of the conductor is orthogonal to the magnetic field. By detecting the electromotive force generated in the direction orthogonal to the direction of the magnetic field and the predetermined length direction of the conductor to receive the sound wave,
With a simple structure and by changing the length of the conductor,
It is possible to easily receive sound waves of frequencies over a relatively wide range including the low frequency band.
図面はこの発明に係る電磁型音波送信器及び受信器の実
施例を示すものであって、第１図は電磁型音波送信器の
概略断面図、第２図は電磁型音波送信器の概略斜視図、
第３図は電磁型音波送信器の概略側断面図、第４図は電
磁型音波送信器の作動説明図、第５図は電磁型音波受信
器の概略断面図、第６図は電磁型音波受信器の概略斜視
図である。 〔符号の説明〕 1:電磁型音波送信器 2:磁石、3:導体 4:交流電源、5:絶縁体 6:交流電流分散盤、7:閉塞材 8:電磁型音波受信器 9:交流電圧検出器The drawings show an embodiment of an electromagnetic sound wave transmitter and receiver according to the present invention. FIG. 1 is a schematic sectional view of the electromagnetic sound wave transmitter, and FIG. 2 is a schematic perspective view of the electromagnetic sound wave transmitter. Figure,
FIG. 3 is a schematic side sectional view of an electromagnetic sound wave transmitter, FIG. 4 is an operation explanatory view of the electromagnetic sound wave transmitter, FIG. 5 is a schematic cross sectional view of an electromagnetic sound wave receiver, and FIG. 6 is an electromagnetic sound wave. It is a schematic perspective view of a receiver. (Description of symbols) 1: Electromagnetic wave transmitter 2: Magnet, 3: Conductor 4: AC power supply, 5: Insulator 6: AC current distribution board, 7: Closure material 8: Electromagnetic wave receiver 9: AC voltage Detector
Claims (3)
定長さを有する導体を形成し、所定長さの方向の両端面
を除く該導体の外面を絶縁体で被覆し、水中の磁界中に
絶縁体で一部が被覆された該導体を該導体の所定長さ方
向が磁界に対して直交するように配置し、該導体に磁界
の方向及び該導体の所定長さ方向に対して直交方向に交
流電流を流して音波を発生する構成としたことを特徴と
する電磁型音波送信器。1. A three-dimensional solid body having a filled inside is used to form a conductor having a predetermined length, and the outer surface of the conductor except for both end faces in the direction of the predetermined length is covered with an insulator, The conductor partially covered with an insulator in a magnetic field is arranged so that the predetermined length direction of the conductor is orthogonal to the magnetic field, and the conductor is arranged in the magnetic field direction and the predetermined length direction of the conductor. An electromagnetic sound wave transmitter characterized in that an alternating current is applied in a perpendicular direction to generate sound waves.
面の一方に閉塞材を密着して、該導体の所定長さ方向の
片方の端面を閉塞材で被覆して密閉した請求項１記載の
電磁型音波送信器。2. An occluding material is closely attached to one of both end surfaces of a conductor for generating sound waves in a predetermined length direction, and one end surface of the conductor in the predetermined length direction is covered with the occluding material and hermetically sealed. 1. The electromagnetic sound wave transmitter according to 1.
定長さを有する導体を形成し、所定長さ方向の両端面を
除く該導体の外面を絶縁体で被覆し、水中の磁界中に絶
縁体で一部が被覆された該導体を該導体の所定長さ方向
が磁界に対して直交するように配置し、該導体に磁界の
方向及び該導体の所定長さ方向に対して直交方向に生じ
る起電力を検出して音波を受信する構成としたことを特
徴とする電磁型音波受信器。3. A magnetic field in water, in which a conductor having a predetermined length is formed by a three-dimensional solid-state frame body which is filled inside and the outer surface of the conductor except for both end faces in the predetermined length direction is covered with an insulator. The conductor partially covered with an insulator is arranged so that the predetermined length direction of the conductor is orthogonal to the magnetic field, and the conductor is arranged in the magnetic field direction and the predetermined length direction of the conductor. An electromagnetic sound wave receiver characterized by being configured to detect an electromotive force generated in an orthogonal direction and receive a sound wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2115576A JPH0832103B2 (en) | 1990-05-01 | 1990-05-01 | Electromagnetic sound wave transmitter and receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2115576A JPH0832103B2 (en) | 1990-05-01 | 1990-05-01 | Electromagnetic sound wave transmitter and receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0413400A JPH0413400A (en) | 1992-01-17 |
| JPH0832103B2 true JPH0832103B2 (en) | 1996-03-27 |
Family
ID=14665997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2115576A Expired - Fee Related JPH0832103B2 (en) | 1990-05-01 | 1990-05-01 | Electromagnetic sound wave transmitter and receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0832103B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113543548B (en) * | 2021-07-14 | 2022-09-09 | 深圳普泰电气有限公司 | Ultrahigh current monitoring and processing system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5430879Y2 (en) * | 1977-06-08 | 1979-09-27 |
-
1990
- 1990-05-01 JP JP2115576A patent/JPH0832103B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0413400A (en) | 1992-01-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101507749B1 (en) | Acoustic generator, acoustic generation device, and electronic device | |
| US2978669A (en) | Underwater electrodynamic acoustic transducer with air-filled composite diaphragm | |
| CN108435523B (en) | Water drop type flextensional transducer | |
| US2550771A (en) | Magnetostriction transducer | |
| US9215531B2 (en) | Acoustic generator, acoustic generating device, and electronic device | |
| Josserand et al. | PVF2 velocity hydrophones | |
| US3460063A (en) | Ultrasonic transducer | |
| US4058002A (en) | Dispersive electromagnetic surface acoustic wave transducer | |
| US5256920A (en) | Acoustic transducer | |
| JPH0832103B2 (en) | Electromagnetic sound wave transmitter and receiver | |
| US7434467B2 (en) | Electromagnetic ultrasound converter | |
| JP2560177B2 (en) | Underwater low frequency wave transmitter using rare earth alloy | |
| JP2002204498A (en) | Ultrasonic wave sensor | |
| US5119343A (en) | Transducers for acoustic logging tool | |
| US3768069A (en) | Encased gradient hydrophone assembly | |
| JPS5621058A (en) | Transducer for electromagnetic supersonic wave flaw detection | |
| JP2002372520A (en) | Ultrasonic probe | |
| CN113262972B (en) | Electromagnetic structure and electromagnetic transducer | |
| JPS585614A (en) | Flowmeter | |
| JP2012191429A (en) | Aerial ultrasonic sensor | |
| JP2002243864A (en) | Vibration source for sound-wave detection | |
| JPH0157736B2 (en) | ||
| GB2142431A (en) | Improvements relating to electro-mechanical transducers | |
| US3281772A (en) | Low frequency electromagnetic hydrophone | |
| JPS62277555A (en) | Electromagnetic ultrasonic probe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |