JP4628439B2 - Electrode plate - Google Patents

Electrode plate Download PDF

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JP4628439B2
JP4628439B2 JP2008064082A JP2008064082A JP4628439B2 JP 4628439 B2 JP4628439 B2 JP 4628439B2 JP 2008064082 A JP2008064082 A JP 2008064082A JP 2008064082 A JP2008064082 A JP 2008064082A JP 4628439 B2 JP4628439 B2 JP 4628439B2
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electrode
electrode plate
electric field
side electrode
paper
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JP2009224838A (en
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龍介 川野
克幸 落合
直志 美濃谷
満 品川
門　　勇一
利彰 朝日
亮一 松本
誠司 矢部
亮二 菊地
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NTT Electronics Corp
Nippon Telegraph and Telephone Corp
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NTT Electronics Corp
Nippon Telegraph and Telephone Corp
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Description

本発明は、電界伝達媒体に電界を誘起して通信を行う電界通信手段に適用する電極板に関する。   The present invention relates to an electrode plate that is applied to an electric field communication means that performs communication by inducing an electric field in an electric field transmission medium.

従来において、電界を人体などの電界伝達媒体に誘起させて、この誘起した電界を介して様々な情報通信を行う電界通信システムが提案されている。この電界通信システムは送信手段と受信手段あるいはそのいずれか一方を備えた電界通信装置を人間が所持し、他の人間や設備（ＰＣ、駅の改札、自動販売機、ドアや門扉など）に同様の電界通信装置を所持あるいは設置し、目的に応じた情報通信を行っている。この情報通信によりセキュリティ認証や課金、位置などのデータ収集などが可能になっている（特許文献１参照）。   Conventionally, there has been proposed an electric field communication system in which an electric field is induced in an electric field transmission medium such as a human body and various information communication is performed via the induced electric field. This electric field communication system has electric field communication devices equipped with transmission means and / or reception means, and is similar to other people and equipment (PCs, station ticket gates, vending machines, doors, gates, etc.) Owns or installs the electric field communication device, and performs information communication according to the purpose. This information communication makes it possible to collect data such as security authentication, billing, and location (see Patent Document 1).

このような電界通信装置を電界通信手段として用いる場合、互いに絶縁され隔離された−側電極と＋側電極の組からなる電極板が電界通信装置に備わる。人体がこの電極に触れることにより、人体内に電界が誘起されて電界伝達媒体となり、電界通信が可能となる。
特開２００６−８１１１１ When such an electric field communication device is used as electric field communication means, the electric field communication device is provided with an electrode plate composed of a pair of a negative electrode and a positive electrode that are insulated and isolated from each other. When the human body touches the electrode, an electric field is induced in the human body to become an electric field transmission medium, and electric field communication is possible.
JP 2006-81111 A

しかしながら上述のような従来の技術においては、電極板間を空間で隔離すると、媒体の歪や温度による伸縮／膨張などにより、電極同士が接触したり電極間の間隔が小さくなり、アンテナ効果（データ送信・受信性能）が小さくなる可能性があった。   However, in the conventional techniques as described above, when the electrode plates are separated from each other by a space, the electrodes are brought into contact with each other or the distance between the electrodes is reduced due to expansion / contraction / expansion due to temperature or the like, and the antenna effect (data (Transmission / reception performance) may be reduced.

また、筐体内に電極を設置する際に、電極の位置を確定するには、筐体内側に貼り付けるなど、固定する必要がある。しかし、筐体内側に電極を固定すると、電池交換など、筐体開閉時に回路基板との間の配線に負荷がかかり、切断してしまう恐れがあった。   Further, when the electrode is installed in the housing, it is necessary to fix the electrode position by fixing it on the inside of the housing. However, if the electrode is fixed inside the casing, there is a risk that the wiring with the circuit board is loaded and disconnected when the casing is opened or closed, such as when replacing the battery.

また、電極を固定しない場合は、電極間隔が小さくなる、電極同士が接触するなどにより、アンテナ効果（データ送信・受信性能）が、小さくなる可能性があった。   Further, when the electrodes are not fixed, there is a possibility that the antenna effect (data transmission / reception performance) may be reduced due to a decrease in the electrode interval or contact between the electrodes.

本発明は上記を鑑みてなされたものであり、その目的は、電極板同士が接触することを防止して電極板間隔を一定に保つことにある。   The present invention has been made in view of the above, and an object thereof is to prevent the electrode plates from coming into contact with each other and keep the electrode plate interval constant.

上記の目的を達成するために、請求項１に記載の本発明は、電界伝達媒体に電界を誘起して通信を行う電界通信手段に適用する電極板において、前記電極板は一対の＋側電極板と−側電極板とにより構成され、前記＋側電極板と前記−側電極板の電極板間に電極板間保持材を備え、前記電極板間保持材は、空気を含む立体構造を形成し、前記電極板間において弾力性を発揮する。
In order to achieve the above object, the present invention according to claim 1 is an electrode plate applied to an electric field communication means for performing communication by inducing an electric field in an electric field transmission medium, wherein the electrode plate is a pair of + side electrodes. a plate - is formed by the side electrode plate, the + side electrode plate and the - equipped with the electrode plates of the side electrode plate conductive electrode plates holding material, the electrode plates holding material, the three-dimensional structure including an air formed, it exerts elasticity in the electrode plates.

また、請求項２に記載の本発明は、請求項１において、前記電極板間保持材は、少なくとも紙と前記空気の組み合わせによる立体構造を形成し、前記電極板間において弾力性を発揮する。   According to a second aspect of the present invention, in the first aspect, the interelectrode plate holding material forms a three-dimensional structure by a combination of at least paper and air, and exhibits elasticity between the electrode plates.

また、請求項３に記載の本発明は、請求項２において、前記紙は前記電極板間において略蛇腹状に形成されて前記電極板間に挟持されている。   According to a third aspect of the present invention, in the second aspect, the paper is formed in a substantially bellows shape between the electrode plates and is sandwiched between the electrode plates.

また、請求項４に記載の本発明は、請求項１〜３のいずれかにおいて、前記比誘電率は１以上４以下である。   In addition, according to a fourth aspect of the present invention, in any one of the first to third aspects, the relative dielectric constant is 1 or more and 4 or less.

本発明によれば、電極板同士が接触することを防止して電極板間隔を一定に保つことができる。   According to the present invention, electrode plates can be prevented from contacting each other, and the electrode plate interval can be kept constant.

図１は、本発明の電極板の実施の形態を説明するための概観図を示す。この図１には、電界伝達媒体に結合するための＋側電極１と、グランドと結合するための−側電極２と、前記両電極間の隔離を維持するための電極板間保持材３と、＋側電極１と−側電極２のそれぞれに接続されて電界通信を行うための駆動回路４と、電界通信に必要な構成部材を格納するための筐体５と、からなる電界通信手段の構成例が示されている。   FIG. 1 shows an overview for explaining an embodiment of an electrode plate of the present invention. FIG. 1 shows a + side electrode 1 for coupling to an electric field transmission medium, a − side electrode 2 for coupling to a ground, and an electrode plate holding material 3 for maintaining isolation between the two electrodes. , A drive circuit 4 connected to each of the + side electrode 1 and the − side electrode 2 for performing electric field communication, and a housing 5 for storing components necessary for electric field communication. A configuration example is shown.

筐体５は電気的な絶縁が保たれた略箱型の容器であり、内部に駆動回路４と＋側電極１および−側電極２を収納している。筐体５の大きさは用途により任意に設定されているが、電界通信手段に適用する場合は小型のものが求められる。たとえばクレジットカードサイズと同等の大きさとしてユーザが携帯自在にする必要がある。   The housing 5 is a substantially box-shaped container in which electrical insulation is maintained, and houses the drive circuit 4, the + side electrode 1, and the − side electrode 2 therein. The size of the housing 5 is arbitrarily set depending on the application, but a small size is required when applied to the electric field communication means. For example, it is necessary for the user to be portable with a size equivalent to the credit card size.

このように厚みや面積に制約がある筐体５の内部に電界通信手段を実現するための構成部材を収納するためには、特に、駆動回路４と＋側電極１および−側電極２を筐体５の限られた厚みの範囲内に格納する必要がある。駆動回路４は既存の集積回路技術により必要十分に小型化が可能であり、この技術により実現されている。   In order to house the constituent members for realizing the electric field communication means in the casing 5 having restrictions on the thickness and area, in particular, the drive circuit 4, the + side electrode 1, and the − side electrode 2 are housed. It is necessary to store within the limited thickness range of the body 5. The drive circuit 4 can be reduced in size and size by existing integrated circuit technology, and is realized by this technology.

一方、電界通信においてグランド（−側）と結合する−側電極２と、人体などの電界伝達媒体に結合する＋側電極１が互いが接触しないように所定の距離Ｌを保ちつつ、筐体５の内面に押し付けられて配置され格納される必要がある。   On the other hand, while maintaining a predetermined distance L so that the -side electrode 2 coupled to the ground (-side) and the + side electrode 1 coupled to an electric field transmission medium such as a human body do not contact each other in the electric field communication, the housing 5 It is necessary to be placed and stored while being pressed against the inner surface of the.

そこで、−側電極２と＋側電極１との間に電極板間保持材３を配置して電極間の距離を保っている。また、この電極板間保持材３は比誘電率が小さい材質が選択されて用いられている。本実施の形態においては、この電極間保持材３として、電極間に弾力性のある（バネ状）、空気を多く含んだ（比誘電率が小さい）材料を挟み、電極を筐体５の内面に押しつけることで、筐体５の内側に貼り付けることなく電極間隔を一定（最大）に保っている。   Therefore, the interelectrode holding material 3 is disposed between the negative electrode 2 and the positive electrode 1 to maintain the distance between the electrodes. In addition, a material having a small relative dielectric constant is selected and used for the interelectrode plate holding member 3. In the present embodiment, as the interelectrode holding member 3, a material having elasticity (spring shape) and containing a lot of air (low relative dielectric constant) is sandwiched between the electrodes, and the electrodes are arranged on the inner surface of the housing 5. The electrode spacing is kept constant (maximum) without being attached to the inside of the housing 5.

この図１に示した電極板間保持材３は、弾力性と低い比誘電率を実現するために、紙を筒状に成型した紙筒として複数を並列に配置している。それぞれの紙の筒内は空洞であり、空気層６を備えている。ここで用いる紙は比誘電率が２．０〜２．６程度であり、空気層６の比誘電率も１．０程度であり、十分に低い比誘電率を実現している。   In order to achieve elasticity and a low relative dielectric constant, a plurality of electrode plate holding members 3 shown in FIG. 1 are arranged in parallel as paper cylinders formed by forming paper into a cylindrical shape. Each paper cylinder is hollow and has an air layer 6. The paper used here has a relative dielectric constant of about 2.0 to 2.6, and the relative dielectric constant of the air layer 6 is about 1.0, realizing a sufficiently low relative dielectric constant.

また、電極板間保持材３に適用した紙筒は自身の弾性変形により−側電極２と＋側電極１の間で柔軟なバネ性を示しつつ両電極間の距離を所定位置に保持している。このようなバネ性により、たとえば筐体５の厚さ方向に寸法上の余裕がない場合において、筐体５内に−側電極２と＋側電極１が格納される際に筐体５の内面と接触して押されても、柔軟に紙筒が変形して両電極間の距離を確保しつつ、両電極を筐体５の内面に弾力性でもって押し付けて良好な格納性を実現している。   Further, the paper tube applied to the interelectrode plate holding member 3 exhibits a flexible spring property between the negative electrode 2 and the positive electrode 1 due to its own elastic deformation, and maintains the distance between both electrodes in a predetermined position. Yes. Due to such a spring property, for example, when there is no dimensional allowance in the thickness direction of the housing 5, the inner surface of the housing 5 is stored when the − side electrode 2 and the + side electrode 1 are stored in the housing 5. Even if pressed in contact with the paper, the paper tube is flexibly deformed to secure the distance between both electrodes, and both electrodes are pressed against the inner surface of the housing 5 with elasticity to achieve good storage performance. Yes.

次に、図２に示すのは、電極板間保持材３の一つの変形例である。   Next, FIG. 2 shows a modification of the interelectrode plate holding member 3.

この図２に示す構成では、＋側電極１と−側電極２の間に配置される電極板間保持材３として、蛇腹状に折畳まれた紙で製作された電極板間保持材７が配置されている。この電極板間保持材７は紙で製作されているので、低い比誘電率であり、＋側電極１と−側電極２の間で弾性変形をすることができる。また蛇腹状に折畳まれ断面が波状にされることにより空気を保持し、この空気のためにより低い比誘電率を実現している。   In the configuration shown in FIG. 2, the interelectrode holding member 7 made of paper folded in a bellows shape is used as the interelectrode holding member 3 disposed between the positive electrode 1 and the negative electrode 2. Has been placed. Since the interelectrode holding member 7 is made of paper, it has a low relative dielectric constant and can be elastically deformed between the + side electrode 1 and the − side electrode 2. In addition, air is held by folding the bellows into a corrugated cross section, and a lower relative dielectric constant is realized for this air.

次に、図３に示すのは、電極板間保持材３の別の変形例である。   Next, FIG. 3 shows another modification of the electrode plate holding member 3.

この図３に示す構成では、＋側電極１と−側電極２の間に断面が略凸状の電極板間保持材８が配置されている。電極板間保持材８の突起により＋側電極１と−側電極２が隔離されており、突起同士の間の空間は空気である。電極板間保持材８の材質は紙を用いても良いが、例えば他の低い比誘電率をもつゴムなどを用いても良い。ゴムを用いることにより、紙に比してより良好な弾力性を示し、筐体５への格納性と両電極の位置決めを良好に行うことができる。なお、ゴムの場合の比誘電率は約２．０〜３．５程度であり、紙の比誘電率２．０〜２．６と同様の低い比誘電率を実現することができる。   In the configuration shown in FIG. 3, an interelectrode holding member 8 having a substantially convex cross section is disposed between the + side electrode 1 and the − side electrode 2. The + side electrode 1 and the − side electrode 2 are isolated by the protrusions of the interelectrode holding member 8, and the space between the protrusions is air. The electrode plate holding member 8 may be made of paper, but other materials such as rubber having a low relative dielectric constant may also be used. By using rubber, the elasticity is better than that of paper, and the storage in the housing 5 and the positioning of both electrodes can be performed well. In the case of rubber, the relative dielectric constant is about 2.0 to 3.5, and a low relative dielectric constant similar to that of paper 2.0 to 2.6 can be realized.

以上説明したように、＋側電極１と−側電極２の間に空気のような低い比誘電率の物質を保持して空間を確保し、さらに弾力性を備え比誘電率も低い紙などを用いることにより、電極間の距離をバネ性でもって押し広げ両極の接触を阻止して保持し、アンテナ効果の低下も阻止することができる。   As described above, a low dielectric constant material such as air is held between the + side electrode 1 and the − side electrode 2 to secure a space, and paper that has elasticity and low relative dielectric constant is also used. By using it, the distance between the electrodes can be extended with springiness to prevent and hold the contacts of both poles, and the antenna effect can also be prevented from deteriorating.

本発明の電極板の実施の形態を説明するための概要図を示す。The schematic diagram for demonstrating embodiment of the electrode plate of this invention is shown. 本発明の実施の形態の一つの変形例を示す。One modification of embodiment of this invention is shown. 本発明の実施の形態の別の変形例を示す。Another modification of embodiment of this invention is shown.

符号の説明Explanation of symbols

１…＋側電極
２…−側電極
３、７、８…電極板間保持材
４…駆動回路
５…筐体
６…空気層 DESCRIPTION OF SYMBOLS 1 ... + side electrode 2 ...- side electrode 3, 7, 8 ... Interelectrode-plate holding material 4 ... Drive circuit 5 ... Housing 6 ... Air layer

Claims (4)

電界伝達媒体に電界を誘起して通信を行う電界通信手段に適用する電極板において、
前記電極板は一対の＋側電極板と−側電極板とにより構成され、
前記＋側電極板と前記−側電極板の電極板間に電極板間保持材を備え、
前記電極板間保持材は、空気を含む立体構造を形成し、前記電極板間において弾力性を発揮することを特徴とする電極板。 In an electrode plate applied to an electric field communication means for inducing communication in an electric field transmission medium and performing communication,
The electrode plate and the pair of the + side electrode plate - is formed by the side electrode plate,
The + side electrode plate and the - equipped with the electrode plates of the side electrode plate conductive electrode plates holding material,
The electrode plates holding member forms a three-dimensional structure including an air electrode plate characterized that you exert elasticity in the electrode plates. 前記電極板間保持材は、少なくとも紙と前記空気の組み合わせによる立体構造を形成し、前記電極板間において弾力性を発揮することを特徴とする請求項１に記載の電極板。   2. The electrode plate according to claim 1, wherein the electrode plate holding member forms a three-dimensional structure by a combination of at least paper and the air, and exhibits elasticity between the electrode plates. 前記紙は前記電極板間において略蛇腹状に形成されて前記電極板間に挟持されていることを特徴とする請求項２に記載の電極板。   3. The electrode plate according to claim 2, wherein the paper is formed in a substantially bellows shape between the electrode plates and is sandwiched between the electrode plates. 前記比誘電率は１以上４以下であることを特徴とする請求項１〜３のいずれかに記載の電極板。   The said dielectric constant is 1 or more and 4 or less, The electrode plate in any one of Claims 1-3 characterized by the above-mentioned.
JP2008064082A 2008-03-13 2008-03-13 Electrode plate Expired - Fee Related JP4628439B2 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005123845A (en) * 2003-10-16 2005-05-12 Hashiba Shinji Antenna for data transmission/reception and data transmission/reception system
JP2009017467A (en) * 2007-07-09 2009-01-22 Nippon Telegr & Teleph Corp <Ntt> Electrode structure
JP2009017466A (en) * 2007-07-09 2009-01-22 Nippon Telegr & Teleph Corp <Ntt> Casing structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005123845A (en) * 2003-10-16 2005-05-12 Hashiba Shinji Antenna for data transmission/reception and data transmission/reception system
JP2009017467A (en) * 2007-07-09 2009-01-22 Nippon Telegr & Teleph Corp <Ntt> Electrode structure
JP2009017466A (en) * 2007-07-09 2009-01-22 Nippon Telegr & Teleph Corp <Ntt> Casing structure

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