JPH11273976A - Receiving electromagnetic coil - Google Patents

Receiving electromagnetic coil

Info

Publication number
JPH11273976A
JPH11273976A JP10069703A JP6970398A JPH11273976A JP H11273976 A JPH11273976 A JP H11273976A JP 10069703 A JP10069703 A JP 10069703A JP 6970398 A JP6970398 A JP 6970398A JP H11273976 A JPH11273976 A JP H11273976A
Authority
JP
Japan
Prior art keywords
electromagnetic coil
electric field
coil
winding
receiving
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.)
Granted
Application number
JP10069703A
Other languages
Japanese (ja)
Other versions
JP3057563B2 (en
Inventor
Fumio Sakata
文男 坂田
Nobuyoshi Yamazaki
宣悦 山崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
REIDEIKKU KK
Sakata Denki Co Ltd
Original Assignee
REIDEIKKU KK
Sakata Denki Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by REIDEIKKU KK, Sakata Denki Co Ltd filed Critical REIDEIKKU KK
Priority to JP10069703A priority Critical patent/JP3057563B2/en
Publication of JPH11273976A publication Critical patent/JPH11273976A/en
Application granted granted Critical
Publication of JP3057563B2 publication Critical patent/JP3057563B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Arrangements For Transmission Of Measured Signals (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a receiving electromagnetic coil enabling long-distance transmission of signals by sufficiently suppressing noise signals which are due to the components of external electric field. SOLUTION: Magnetic flux which is generated by supplying a current to a transmission electromagnetic coil included in a transmission device placed in the earth or water is received, and a receiving electromagnetic coil 20 included in a receiving device placed on sea or the earth is provided with an electric field shield for forming an electrically insulating area with respect to the periphery of the winding direction of a coil winding 21. The electric field shield includes a non-magnetic metallic band 23 using a non-magnetic material wound helically around the outside of a first insulating material 22 which is provided at the outside of the coil winding 21, and a second insulating material 24 provided between areas where the start and finish of the winding of the non- magnetic metallic band 23 cross each other.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、主として海底地盤
沈下の測定等に適用されると共に、地中又は水中で情報
通信を容易に行わせるための情報通信装置の受信系装置
に備えられる受信用電磁コイルに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mainly applied to the measurement of submarine land subsidence and the like, and is used in a receiving system of an information communication apparatus for facilitating information communication underground or underwater. It relates to an electromagnetic coil.

【0002】[0002]

【従来の技術】従来、海上に人工地盤を構築する場合、
埋め立て工事が行われるが、こうした埋め立て工事では
土砂を海中に落下した際に土砂自体の重量により海底地
盤の沈下が発生する。このような海底地盤の沈下を測定
する場合、通常海底に設置した水圧センサから沈下によ
る水圧データの変化を示すセンサ出力を地中や水中から
海面上へケーブルを用いて伝送するようにしている。
2. Description of the Related Art Conventionally, when constructing artificial ground on the sea,
Landfill works are performed. In such landfill works, when the earth and sand falls into the sea, the submarine ground subsidence occurs due to the weight of the earth and sand itself. When measuring such subsidence of the seabed, a sensor output indicating a change in water pressure data due to subsidence is normally transmitted from a water pressure sensor installed on the seabed from underground or underwater to the sea surface using a cable.

【0003】ところが、こうした構成では例えば海底地
盤の沈下量がケーブルの伸びの許容範囲を越えるときに
はケーブルが切断されるため、沈下量が大きいときには
適用することができなくなってしまう。
However, in such a configuration, for example, the cable is cut when the amount of settlement of the seafloor ground exceeds the allowable range of the elongation of the cable, so that it cannot be applied when the amount of settlement is large.

【0004】そこで、最近ではケーブルを用いずに無線
により測定データの通信を行わせるような情報通信装置
が開発されており、これにより減衰量が少ない低周波の
周波数を搬送波として用いて測定データを伝送するよう
にしている。
[0004] In recent years, information communication devices have been developed that allow measurement data to be communicated wirelessly without using a cable, whereby measurement data can be transmitted using a low-frequency frequency with low attenuation as a carrier wave. I try to transmit.

【0005】図4は、こうした既存の情報通信装置の基
本構成を示したブロック図である。この情報通信装置
は、海底に設置される送信系装置と、海上又は地上に設
置される受信系装置とから成る。
FIG. 4 is a block diagram showing a basic configuration of such an existing information communication device. This information communication apparatus includes a transmission system device installed on the sea floor and a reception system device installed on the sea or on the ground.

【0006】送信系装置では、圧力センサ1からのセン
サ出力を変換回路3で通信用電気信号に変換したものに
基づいて変調回路4によって発振回路2からの発振出力
を被変調信号として振幅変調して変調信号として出力す
る。この変調信号は増幅回路5で増幅された後、送信用
電磁コイル6に伝送される。送信用電磁コイル6では増
幅された変調信号の電流値に応じて磁束を発生して外部
へ送出するが、ここでは発振回路2の発振出力による変
調回路4からの変調信号が磁束の振幅変化を示すものと
なる。
[0006] In the transmission system, the oscillation output from the oscillation circuit 2 is amplitude-modulated as a modulated signal by the modulation circuit 4 based on the sensor output from the pressure sensor 1 converted into a communication electric signal by the conversion circuit 3. And outputs it as a modulation signal. This modulated signal is amplified by the amplifier circuit 5 and then transmitted to the transmission electromagnetic coil 6. The transmitting electromagnetic coil 6 generates a magnetic flux in accordance with the current value of the amplified modulation signal and sends it out to the outside. It will be shown.

【0007】受信系装置では、受信用電気コイル7にお
いて送信用電磁コイル6からの磁束の振幅変化を受信す
ることにより誘起される電圧が送信用電磁コイル6から
送出された磁束に比例した出力となり、これが差動回路
8で差動増幅された後に検波回路9で検波されたものが
記録器10で集録される。
In the receiving system, the voltage induced by receiving the change in the amplitude of the magnetic flux from the transmitting electromagnetic coil 6 in the receiving electric coil 7 becomes an output proportional to the magnetic flux transmitted from the transmitting electromagnetic coil 6. After this is differentially amplified by the differential circuit 8 and then detected by the detection circuit 9, it is collected by the recorder 10.

【0008】ここで無線通信の伝搬媒質である海水や土
砂の電気伝導度は極めて高いため、通常伝搬損失を小さ
くするために使用する搬送波の周波数は低周波のものが
使用される。例えば発振回路2の搬送周波数を10kH
z以下とすれば、伝送距離数kmに比べて波長が30k
m以上と極めて長いことから、受信位置である海上又は
地上に設置された受信用電磁コイル7周辺の信号は全て
磁束による磁界成分となり、信号成分として電界成分が
発生しないことになる。これにより、受信用電磁コイル
7で検出される電界成分は外部からの雑音成分となる。
Here, since the electric conductivity of seawater or earth and sand, which are propagation media for wireless communication, is extremely high, a carrier having a low frequency is usually used to reduce propagation loss. For example, the carrier frequency of the oscillation circuit 2 is 10 kHz.
If it is less than z, the wavelength is 30 k in comparison with the transmission distance of several km.
m, the signals around the receiving electromagnetic coil 7 installed on the sea or on the ground, which is the receiving position, are all magnetic field components due to magnetic flux, and no electric field component is generated as a signal component. As a result, the electric field component detected by the receiving electromagnetic coil 7 becomes an external noise component.

【0009】[0009]

【発明が解決しようとする課題】上述した無線により情
報通信の伝送を行う情報通信装置の場合、減衰量が少な
い低周波の周波数を搬送波として用いて伝送を行うよう
にしているが、伝送距離が長くなると受信用電磁コイル
で受信される磁界成分の信号に対する外部からの電界成
分による雑音信号の比率が上昇するため、長距離の信号
伝送を行うことができないという欠点がある。
In the case of the above-mentioned information communication apparatus for transmitting information communication by radio, transmission is performed using a low-frequency frequency with a small amount of attenuation as a carrier wave. If the length becomes longer, the ratio of the noise signal due to the electric field component from the outside to the signal of the magnetic field component received by the receiving electromagnetic coil increases, so that there is a disadvantage that long-distance signal transmission cannot be performed.

【0010】本発明は、このような問題点を解決すべく
なされたもので、その技術的課題は、外部からの電界成
分による雑音信号を充分に抑制できて長距離の信号伝送
を可能にする受信用電磁コイル及びそれを含む情報通信
装置を提供することにある。
SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and its technical problem is that a noise signal due to an external electric field component can be sufficiently suppressed to enable long-distance signal transmission. An object of the present invention is to provide a receiving electromagnetic coil and an information communication device including the same.

【0011】[0011]

【課題を解決するための手段】本発明によれば、送信用
電磁コイルに電流を供給することで発生する磁束を受信
すると共に、コイル巻線の巻線方向の外周囲に対して電
気的な絶縁領域を形成するための電界シールドが設けら
れた受信用電磁コイルが得られる。
According to the present invention, a magnetic flux generated by supplying a current to a transmitting electromagnetic coil is received, and an electric current is applied to an outer periphery of the coil winding in a winding direction. A receiving electromagnetic coil provided with an electric field shield for forming an insulating region is obtained.

【0012】又、本発明によれば、上記受信用電磁コイ
ルにおいて、電界シールドは、非磁性材料を用いた非磁
性金属帯をコイル巻線に螺旋状に巻き付けたものの巻初
めと巻終りとが交差する領域の間に絶縁材を配備して成
る受信用電磁コイルが得られる。
Further, according to the present invention, in the above-described receiving electromagnetic coil, the electric field shield is formed by spirally winding a non-magnetic metal band using a non-magnetic material around the coil winding. A receiving electromagnetic coil having an insulating material provided between the intersecting regions is obtained.

【0013】[0013]

【作用】本発明の受信用電磁コイルでは、コイル巻線に
電界シールドを設けることにより、外部からの電界成分
によって電圧として誘起される雑音信号の発生を抑制し
ているため、その結果として長距離伝送が可能になる。
In the receiving electromagnetic coil according to the present invention, by providing an electric field shield on the coil winding, the generation of a noise signal induced as a voltage by an external electric field component is suppressed. Transmission becomes possible.

【0014】[0014]

【発明の実施の形態】以下に実施例を挙げ、本発明の受
信用電磁コイルについて、図面を参照して詳細に説明す
る。
Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

【0015】図1は、本発明の一実施例に係る受信用電
磁コイル20の外観構成を示した局部の斜視図である。
この受信用電磁コイル20も、図4で説明したように、
地中又は水中に設置される送信系装置に備えられる送信
用電磁コイルに電流を供給することで発生する磁束を受
信すると共に、海上又は地上に設置される受信系装置に
備えられるものであるが、ここでの受信用電磁コイル2
0には、コイル巻線21の巻線方向の外周囲に対して電
気的な絶縁領域を形成するための電界シールドSが設け
られている。
FIG. 1 is a perspective view of a local portion showing an external configuration of a receiving electromagnetic coil 20 according to an embodiment of the present invention.
As described with reference to FIG.
While receiving magnetic flux generated by supplying current to a transmission electromagnetic coil provided in a transmission system device installed in the ground or underwater, it is provided in a reception system device installed on the sea or on the ground. , The receiving electromagnetic coil 2 here
0 is provided with an electric field shield S for forming an electrically insulating region with respect to the outer periphery of the coil winding 21 in the winding direction.

【0016】この電界シールドSは、コイル巻線21の
外側に設けられた第1の絶縁材22の外側に螺旋状に巻
き付けられた非磁性金属帯23を含むように形成されて
いる。ここでは、コイル巻線21及び電界シールドSの
間に第1の絶縁層22を設けることにより、コイルのイ
ンダクタンスとコイルに並列に接続されたキャパシタン
スによるLC共振回路の共振特性とを改善している。
The electric field shield S is formed so as to include a nonmagnetic metal strip 23 spirally wound around a first insulating member 22 provided outside the coil winding 21. Here, by providing the first insulating layer 22 between the coil winding 21 and the electric field shield S, the inductance of the coil and the resonance characteristics of the LC resonance circuit due to the capacitance connected in parallel to the coil are improved. .

【0017】図2は、この受信用電磁コイル20の細部
構成を示した局部の側面断面図である。図2を参照すれ
ば、電界シールドSは、更に非磁性金属帯23の巻初め
と巻終りとが交差する領域の間に第2の絶縁材24を配
備して成っている。この第2の絶縁材24は、非磁性金
属帯23が交差する部分で左右に配置される非磁性金属
帯23が短絡してショートリングを起こすことを防止す
るために設けられている。
FIG. 2 is a side sectional view of a local portion showing a detailed configuration of the electromagnetic coil 20 for reception. Referring to FIG. 2, the electric field shield S is further provided with a second insulating material 24 between the regions where the start and end of the non-magnetic metal strip 23 intersect. The second insulating material 24 is provided in order to prevent the non-magnetic metal strips 23 arranged on the left and right at the intersection of the non-magnetic metal strips 23 from being short-circuited and causing a short ring.

【0018】このような受信用電磁コイル20を受信系
装置を持たせ、送信系装置との間で情報通信装置におい
て通信を行うと、送信用電磁コイルに電流を供給するこ
とで発生する磁束を受信用電磁コイル20で受信する
際、受信用電磁コイル20に設けられた電界シールドS
によって外部からの電界成分によって電圧として誘起さ
れる雑音信号の発生を充分に抑制するため、磁界成分の
信号に対する外部からの電界成分による雑音信号の比率
が顕著に低下(信号対雑音比が向上)し、結果として信
号の受信距離を長くした上での長距離伝送を行うことが
可能になる。
When such a receiving electromagnetic coil 20 is provided with a receiving system device and communicates with a transmitting system in an information communication device, a magnetic flux generated by supplying a current to the transmitting electromagnetic coil is generated. The electric field shield S provided on the receiving electromagnetic coil 20 when receiving by the receiving electromagnetic coil 20
To sufficiently suppress the generation of a noise signal induced as a voltage by an external electric field component, so that the ratio of the noise signal due to the external electric field component to the magnetic field component signal is remarkably reduced (the signal-to-noise ratio is improved). As a result, it is possible to perform long-distance transmission while increasing the signal reception distance.

【0019】図3は、受信用電磁コイル20及び差動回
路における等価回路を示したものである。この等価回路
において、受信用電磁コイル20はコイルLの両出力側
間にコンデンサCが接続されて成るLC共振回路が電界
シールドSに覆われて構成される。又、電界シールドS
に覆われたLC共振回路は、シールド線26によって金
属容器25に収納された差動回路との接続が行われる。
差動回路は、差動増幅器の入出力側の所定箇所に抵抗を
設けられて構成され、入力側の一方が金属容器25にグ
ランド接続される。又、差動回路は、その出力側に配置
される検波回路にシールド線26によって接続される。
FIG. 3 shows an equivalent circuit in the receiving electromagnetic coil 20 and the differential circuit. In this equivalent circuit, the receiving electromagnetic coil 20 is configured such that an LC resonance circuit in which a capacitor C is connected between both output sides of a coil L is covered with an electric field shield S. Electric field shield S
The LC resonance circuit covered by is connected to the differential circuit housed in the metal container 25 by the shield wire 26.
The differential circuit is configured by providing a resistor at a predetermined location on the input / output side of the differential amplifier, and one of the input sides is grounded to the metal container 25. The differential circuit is connected to a detection circuit arranged on the output side by a shield line 26.

【0020】即ち、こうした等価回路を含む受信系装置
は、図4で説明したものと同様に機能するが、機能上は
受信用電磁コイル20の構成が改良されているため、図
4に示した受信用電磁コイル7よりも外部からの電界成
分によって電圧として誘起される雑音信号の発生を充分
に抑制できる点が相違し、受信系装置自体が信号の受信
距離を長した上での長距離伝送に適用されるものとなっ
ている。
That is, the receiving apparatus including such an equivalent circuit functions in the same manner as that described with reference to FIG. 4, but is functionally improved in the configuration of the receiving electromagnetic coil 20, and is therefore shown in FIG. The difference is that the generation of a noise signal induced as a voltage by an external electric field component can be sufficiently suppressed as compared with the reception electromagnetic coil 7. It has been applied to.

【0021】[0021]

【発明の効果】以上に説明したように、本発明の受信用
電磁コイルによれば、コイル巻線に電界シールドを設け
ることにより、外部からの電界成分によって電圧として
誘起される雑音信号の発生を抑制しているため、磁界成
分の信号に対する外部からの電界成分による雑音信号の
比率が顕著に低下する(信号対雑音比が向上する)よう
になる。従って、この受信用電磁コイルを受信系装置に
持たせ、送信系装置との間で情報通信装置において通信
を行うと、信号の受信距離を長した上での長距離伝送が
可能になる。この結果、情報通信装置により海底地盤の
沈下を測定すると、これまでよりも深い位置まで測定範
囲を広げることができるため、工業的に有益となる。
As described above, according to the receiving electromagnetic coil of the present invention, by providing an electric field shield in the coil winding, generation of a noise signal induced as a voltage by an external electric field component is prevented. As a result, the ratio of the noise signal due to the external electric field component to the signal of the magnetic field component is significantly reduced (the signal-to-noise ratio is improved). Therefore, when the receiving electromagnetic coil is provided in the receiving apparatus and communication is performed with the transmitting apparatus in the information communication apparatus, long-distance transmission is possible with a longer signal receiving distance. As a result, when the settlement of the seafloor ground is measured by the information communication device, the measurement range can be extended to a deeper position than before, which is industrially useful.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の一実施例に係る受信用電磁コイルの外
観構成を示した局部の斜視図である。
FIG. 1 is a perspective view of a local portion showing an external configuration of a receiving electromagnetic coil according to an embodiment of the present invention.

【図2】図1に示す受信用電磁コイルの細部構成を示し
た局部の側面断面図である。
FIG. 2 is a side sectional view of a local portion showing a detailed configuration of a receiving electromagnetic coil shown in FIG. 1;

【図3】図1に示す受信用電磁コイル及び差動回路にお
ける等価回路を示したものである。
FIG. 3 shows an equivalent circuit in the receiving electromagnetic coil and the differential circuit shown in FIG. 1;

【図4】従来の情報通信装置の基本構成を示したブロッ
ク図である。
FIG. 4 is a block diagram showing a basic configuration of a conventional information communication device.

【符号の説明】[Explanation of symbols]

1 圧力センサ 2 発振回路 3 変換回路 4 変調回路 5 増幅回路 6 送信用電磁コイル 7,20 受信用電磁コイル 8 差動回路 9 検波回路 10 記録器 21 コイル巻線 22 第1の絶縁材 23 非磁性金属帯 24 第2の絶縁材 25 金属容器 26 シールド線 C コンデンサ L コイル S 電界シールド REFERENCE SIGNS LIST 1 pressure sensor 2 oscillation circuit 3 conversion circuit 4 modulation circuit 5 amplification circuit 6 transmission electromagnetic coil 7, 20 reception electromagnetic coil 8 differential circuit 9 detection circuit 10 recorder 21 coil winding 22 first insulating material 23 non-magnetic Metal strip 24 Second insulating material 25 Metal container 26 Shield wire C Capacitor L Coil S Electric field shield

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【手続補正書】[Procedure amendment]

【提出日】平成11年4月8日[Submission date] April 8, 1999

【手続補正1】[Procedure amendment 1]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】特許請求の範囲[Correction target item name] Claims

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【特許請求の範囲】[Claims]

【手続補正2】[Procedure amendment 2]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0010[Correction target item name] 0010

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【0010】本発明は、このような問題点を解決すべく
なされたもので、その技術的課題は、外部からの電界成
分による雑音信号を充分に抑制できて長距離の信号伝送
を可能にする受信用電磁コイルを提供することにある。
SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and its technical problem is that a noise signal due to an external electric field component can be sufficiently suppressed to enable long-distance signal transmission. An object of the present invention is to provide a receiving electromagnetic coil.

【手続補正3】[Procedure amendment 3]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0011[Correction target item name] 0011

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【0011】[0011]

【課題を解決するための手段】本発明によれば、送信用
電磁コイルに電流を供給することで発生する磁束を受信
すると共に、コイル巻線の巻線方向の外周囲に電気的な
絶縁領域を形成して外部からの電界成分によって電圧と
して誘起される雑音信号の発生を抑制するための電界シ
ールドが設けられた受信用電磁コイルが得られる。
According to the present invention, a magnetic flux generated by supplying a current to a transmitting electromagnetic coil is received, and an electric insulating region is provided around the outer periphery of the coil winding in the winding direction. And a receiving electromagnetic coil provided with an electric field shield for suppressing generation of a noise signal induced as a voltage by an external electric field component is obtained.

【手続補正4】[Procedure amendment 4]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0015[Correction target item name] 0015

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【0015】図1は、本発明の一実施例に係る受信用電
磁コイル20の外観構成を示した局部の斜視図である。
この受信用電磁コイル20も、図4で説明したように、
地中又は水中に設置される送信系装置に備えられる送信
用電磁コイルに電流を供給することで発生する磁束を受
信すると共に、海上又は地上に設置される受信系装置に
備えられるものであるが、ここでの受信用電磁コイル2
0には、コイル巻線21の巻線方向の外周囲に対して電
気的な絶縁領域を形成して外部からの電界成分によって
電圧として誘起される雑音信号の発生を抑制するための
電界シールドSが設けられている。
FIG. 1 is a perspective view of a local portion showing an external configuration of a receiving electromagnetic coil 20 according to an embodiment of the present invention.
As described with reference to FIG.
While receiving magnetic flux generated by supplying current to a transmission electromagnetic coil provided in a transmission system device installed in the ground or underwater, it is provided in a reception system device installed on the sea or on the ground. , The receiving electromagnetic coil 2 here
0, an electric field shield S for forming an electrically insulating region with respect to the outer periphery in the winding direction of the coil winding 21 to suppress the generation of a noise signal induced as a voltage by an external electric field component. Is provided.

【手続補正5】[Procedure amendment 5]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0021[Correction target item name] 0021

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【0021】[0021]

【発明の効果】以上に説明したように、本発明の受信用
電磁コイルによれば、コイル巻線に外部からの電界成分
によって電圧として誘起される雑音信号の発生を抑制す
るための電界シールドを設けることにより、磁界成分の
信号に対する外部からの電界成分による雑音信号の比率
を顕著に低下させる(信号対雑音比を向上させる)こと
を可能にした上、電界シールド自体がショートリングに
ならないように電界シールドの交差する領域に絶縁材を
設けて磁界成分の検出効率を高めているので、この受信
用電磁コイルを受信系装置に持たせて情報通信装置にお
ける送信系装置との間で通信を行った場合に信号の受信
距離を長くした上で高感度な長距離伝送が可能になる。
これにより、例えば情報通信装置により海底地盤の沈下
を測定すると、これまでよりも深い位置まで測定範囲を
広げることができるため、工業的に極めて有益となる。
As described above, according to the receiving electromagnetic coil of the present invention, the electric field shield for suppressing the generation of the noise signal induced as a voltage by the electric field component from the outside in the coil winding is provided. By providing this, it is possible to remarkably reduce the ratio of the noise signal due to the external electric field component to the signal of the magnetic field component (improve the signal-to-noise ratio), and to prevent the electric field shield itself from becoming a short ring. An insulating material is provided in the area where the electric field shield intersects to improve the detection efficiency of the magnetic field component. Therefore, this receiving electromagnetic coil is provided in the receiving system to communicate with the transmitting system in the information communication device. In such a case, it is possible to perform a long-distance transmission with high sensitivity after extending the reception distance of the signal.
Accordingly, for example, when the settlement of the seabed is measured by an information communication device, the measurement range can be extended to a deeper position than before, which is extremely useful industrially.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 送信用電磁コイルに電流を供給すること
で発生する磁束を受信すると共に、コイル巻線の巻線方
向の外周囲に電気的な絶縁領域を形成するための電界シ
ールドが設けられたことを特徴とする受信用電磁コイ
ル。
An electric field shield is provided for receiving a magnetic flux generated by supplying a current to a transmission electromagnetic coil, and for forming an electrically insulating region around an outer periphery of a coil winding in a winding direction. An electromagnetic coil for reception.
【請求項2】 請求項1記載の受信用電磁コイルにおい
て、前記電界シールドは、非磁性材料を用いた非磁性金
属帯を前記コイル巻線に螺旋状に巻き付けたものの巻初
めと巻終りとが交差する領域の間に絶縁材を配備して成
ることを特徴とする受信用電磁コイル。
2. The electromagnetic coil for reception according to claim 1, wherein the electric field shield is formed by helically winding a non-magnetic metal band using a non-magnetic material around the coil winding. An electromagnetic coil for reception, wherein an insulating material is provided between intersecting regions.
JP10069703A 1998-03-19 1998-03-19 Receiving electromagnetic coil Expired - Fee Related JP3057563B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10069703A JP3057563B2 (en) 1998-03-19 1998-03-19 Receiving electromagnetic coil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10069703A JP3057563B2 (en) 1998-03-19 1998-03-19 Receiving electromagnetic coil

Publications (2)

Publication Number Publication Date
JPH11273976A true JPH11273976A (en) 1999-10-08
JP3057563B2 JP3057563B2 (en) 2000-06-26

Family

ID=13410483

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10069703A Expired - Fee Related JP3057563B2 (en) 1998-03-19 1998-03-19 Receiving electromagnetic coil

Country Status (1)

Country Link
JP (1) JP3057563B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004068436A1 (en) * 2003-01-30 2004-08-12 National Institute For Rural Engineering Buried meter and structure measurement system
JP2010213064A (en) * 2009-03-11 2010-09-24 Ntt Electornics Corp Transceiver

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004068436A1 (en) * 2003-01-30 2004-08-12 National Institute For Rural Engineering Buried meter and structure measurement system
JP2010213064A (en) * 2009-03-11 2010-09-24 Ntt Electornics Corp Transceiver

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