JPH0746164A - Magnetic communication equipment - Google Patents
Magnetic communication equipmentInfo
- Publication number
- JPH0746164A JPH0746164A JP5204631A JP20463193A JPH0746164A JP H0746164 A JPH0746164 A JP H0746164A JP 5204631 A JP5204631 A JP 5204631A JP 20463193 A JP20463193 A JP 20463193A JP H0746164 A JPH0746164 A JP H0746164A
- Authority
- JP
- Japan
- Prior art keywords
- fixed coil
- coil
- magnetic
- plate
- fixed
- 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
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims description 18
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 208000033748 Device issues Diseases 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
- H01F2038/143—Inductive couplings for signals
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、磁場を利用した非接触
で情報を伝送する装置で、より詳しくは固定コイルと移
動コイルとを有する磁気通信装置における固定コイル周
辺の構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contactless device for transmitting information using a magnetic field, and more particularly to a structure around a fixed coil in a magnetic communication device having a fixed coil and a moving coil.
【０００２】[0002]
【従来の技術】送受信用コイルの片方が固定されてお
り、他方の送受信コイルが移動する非接触情報伝送装置
は、スキー場リフトの自動改札装置や自動列車停止装置
などに実用されている。2. Description of the Related Art A non-contact information transmission device in which one of the transmitting and receiving coils is fixed and the other transmitting and receiving coil moves, has been put to practical use in automatic ticket gates of ski lifts and automatic train stop devices.
【０００３】リフトの自動改札装置は、乗り場の改札口
に固定コイルを含む検札装置を設置して、移動コイルを
収納したカード状利用券を利用者が購入し、利用者がカ
ード状利用券を所持して検札装置を通過すると、固定コ
イルが検札装置内の対向位置を通る移動コイルにより、
瞬時に、乗車券の種別、日時、利用回数などの双方向の
情報伝送を行い、検札装置の制御回路が券情報により各
種の信号を発令し、戸の開放、警報表示などを行うよう
に構成されている。In an automatic ticket gate of a lift, a ticket inspecting device including a fixed coil is installed at a ticket gate of a landing, a user purchases a card-shaped voucher containing a moving coil, and the user purchases the card-shaped voucher. When you have it and pass the ticket inspection device, the fixed coil is moved by the moving coil passing through the opposite position in the ticket inspection device.
It is configured to instantly transmit bidirectional information such as ticket type, date and time, number of times of use, etc., and the control circuit of the ticket inspection device issues various signals according to ticket information, opens doors, displays alarms, etc. Has been done.
【０００４】自動列車停止装置は、運転士が信号を見落
とし、列車が危険な状態になるのを防ぐために、赤信号
や制限速度超過時には車上に警報を与え、無視されたと
きは非常ブレーキをかける設備である。In order to prevent the driver from overlooking the traffic light and putting the train in a dangerous state, the automatic train stopping device gives an alarm on the train at a red light or when the speed limit is exceeded, and when the vehicle is ignored, an emergency brake is applied. It is a facility to call.
【０００５】図３は、車上に情報を与える構成の一例を
示す原理図である。地上子１は、レール間に設置した共
振回路であり、固定コイル２を有している。車上子３
は、車上に備えた発振器である。信号条件により地上子
１のコンデンサを切り換えて、車上子３が地上子１の上
を通過したときだけ、車上の発振周波数が地上子１の共
振周波数に引き込まれることを利用し、地上子１の共振
周波数を選択検知して自動列車停止装置の制御装置にト
リガを与える点制御式と呼ばれる構成である。FIG. 3 is a principle diagram showing an example of a structure for providing information on the vehicle. The ground element 1 is a resonance circuit installed between rails and has a fixed coil 2. Car child 3
Is an oscillator equipped on the vehicle. By utilizing the fact that the oscillation frequency on the vehicle is drawn into the resonance frequency of the ground element 1 only when the top element 3 passes over the ground element 1 by switching the capacitor of the ground element 1 according to the signal condition. This is a configuration called a point control type that selectively detects the resonance frequency of 1 and gives a trigger to the control device of the automatic train stop device.
【０００６】[0006]
【発明が解決しようとする課題】この様な磁気通信装置
の固定コイルは、その軸方向の片側で移動コイルに一定
の間隔を置いて対向して情報の送受を行っている。固定
コイルの軸方向の他方側に金属部材が近接して存在する
場合、固定コイルの磁界による渦電流が金属部材に流れ
て固定コイルのＱが低下し、受信アンテナとしての固定
コイルの感度が低下する。そのために情報の伝送を正し
く行えないことがあった。The fixed coil of such a magnetic communication device transmits and receives information on one side in the axial direction of the fixed coil so as to face the moving coil at regular intervals. When a metal member is present close to the other side of the fixed coil in the axial direction, an eddy current due to the magnetic field of the fixed coil flows into the metal member, and the Q of the fixed coil decreases, so that the sensitivity of the fixed coil as a receiving antenna decreases. To do. As a result, information may not be transmitted correctly.
【０００７】本発明の目的は、固定コイルの近傍に対向
して存在する金属部材が、固定コイルのＱの低下を招く
ことを解消した磁気通信装置を提供することにある。An object of the present invention is to provide a magnetic communication device in which the metal member existing in the vicinity of the fixed coil and facing each other is prevented from causing a decrease in Q of the fixed coil.
【０００８】[0008]
【課題を解決するための手段】本発明に係る磁気通信装
置は、固定コイルの主面以上の面積をもつ磁性板を、固
定コイルの軸方向の、移動コイルに対向する側の反対側
に、中心が固定コイルの軸線上にあるように、固定コイ
ルと固定コイルに対向する金属部材との間に配置したこ
とを特徴とする。In a magnetic communication device according to the present invention, a magnetic plate having an area larger than the main surface of a fixed coil is provided on the opposite side of the fixed coil in the axial direction from the side facing the moving coil. It is characterized in that it is arranged between the fixed coil and the metal member facing the fixed coil so that the center is on the axis of the fixed coil.
【０００９】即ち本発明は、所定個所に設置した固定コ
イルの軸方向の片側で、移動体に備えた移動コイルが固
定コイルと間隔を置いて固定コイルに対向して情報の双
方向伝送を行う磁気通信装置において、固定コイルの主
面以上の大きさの磁性板を、固定コイルの移動コイルに
対面する反対側に、中心を固定コイルの軸線上にして固
定コイルと固定コイルに対面する金属部材との間に配置
して、固定コイルと金属部材との磁気的結合を遮断する
ように構成したことを特徴とする磁気通信装置である。That is, according to the present invention, on one side in the axial direction of the fixed coil installed at a predetermined position, the moving coil provided on the moving body faces the fixed coil at a distance from the fixed coil to perform bidirectional transmission of information. In a magnetic communication device, a magnetic plate having a size larger than the main surface of a fixed coil is provided on the opposite side of the fixed coil facing the moving coil, and a metal member facing the fixed coil with the center on the axis of the fixed coil. And a magnetic coil which is arranged between the fixed coil and the metal member so as to interrupt the magnetic coupling between the fixed coil and the metal member.
【００１０】[0010]
【作用】磁性板は、固定コイルに近接して存在する金属
部材と固定コイルとの磁気的結合を遮断して、移動コイ
ルが通過する際の交流信号による金属部材に渦電流が流
れることを防止し、渦電流損による固定コイルのＱの低
下を防ぐ。磁性板は、また、外部からの磁界が固定コイ
ルに及ぼす影響を小さくする。The magnetic plate blocks magnetic coupling between the fixed coil and the metal member existing close to the fixed coil to prevent eddy current from flowing through the metal member due to an AC signal when the moving coil passes through. However, the Q of the fixed coil is prevented from decreasing due to eddy current loss. The magnetic plate also reduces the influence of an external magnetic field on the fixed coil.
【００１１】[0011]
【実施例】図１に示す実施例は、リフト乗り場の検札装
置要部の斜視図である。乗り場に設置した検札装置の金
属製シールド筐体（以下、筐体と称す）の背壁の内面に
軟磁気特性を有するフェライト板からなる磁性板５を固
着している。筐体は図において左手前が開口した箱形
（図は背壁４と側壁との一部を示す）である。筐体内に
扁平な固定コイル６が方形主面を背壁４と平行にして背
壁４から離間して配置されている。磁性板５は、中心が
固定コイル６の軸線上にあり、固定コイル６に対向させ
て背壁４に固着する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiment shown in FIG. 1 is a perspective view of the main part of the ticket inspection device at a lift landing. A magnetic plate 5 made of a ferrite plate having soft magnetic characteristics is fixed to the inner surface of a back wall of a metal shield housing (hereinafter referred to as a housing) of a ticket inspection apparatus installed at a landing. The housing has a box shape (the drawing shows a part of the back wall 4 and the side wall) with the front left opening in the drawing. A flat fixed coil 6 is arranged in the housing with its rectangular main surface parallel to the back wall 4 and spaced from the back wall 4. The magnetic plate 5 has its center on the axis of the fixed coil 6, and is fixed to the back wall 4 so as to face the fixed coil 6.
【００１２】乗車券７に内臓した移動コイル８が固定コ
イル６に対向できるように、筐体の開口側に筐体から離
して断面Ｕ字形の浅い券走行路９を、背壁４と平行に、
かつ水平に配置してある。A shallow ticket running path 9 having a U-shaped cross section is provided on the opening side of the housing parallel to the back wall 4 so that the moving coil 8 incorporated in the ticket 7 can face the fixed coil 6. ,
And they are arranged horizontally.
【００１３】図３における地上子１が、鉄橋梁１０上に
設置された場合を、地上子１の要部を縦断して、第２の
実施例として図２に示す。A case where the ground element 1 in FIG. 3 is installed on the iron bridge 10 is shown in FIG. 2 as a second embodiment in which a main part of the ground element 1 is vertically cut.
【００１４】地上子１は、底部が肉厚である樹脂製密閉
容器１１の内底の凹部に例えば複数個のフェライトタイ
ルからなる磁性板１２を敷き詰めて、磁性板１２の中央
部に磁性板１２よりも一回り小さな扁平な固定コイル２
（簡略に図示）を寝かせて載設している。In the grounding element 1, a magnetic plate 12 made of, for example, a plurality of ferrite tiles is laid in a recess on the inner bottom of a resin closed container 11 having a thick bottom, and the magnetic plate 12 is provided in the center of the magnetic plate 12. Flat coil 2 which is one size smaller than
(Simply shown) is placed lying down.
【００１５】なお磁性板に使用する磁性材には、金属
系、酸化金属系、非晶質系あるいは金属磁性微粉末から
なる圧粉磁性材等があるが、使用する信号の周波数に応
じ適宜選定する。The magnetic material used for the magnetic plate may be a metal-based material, a metal oxide-based material, an amorphous material, or a powder magnetic material made of metal magnetic fine powder, etc., which is appropriately selected according to the frequency of the signal to be used. To do.
【００１６】[0016]
【発明の効果】固定コイルと、金属製筐体や、鉄橋梁な
どに近接して対向した金属部材との間に、固定コイルの
主面以上の大きさの磁性板を、固定コイルの周辺を磁気
遮蔽するように配置することにより、固定コイルと金属
部材の磁気的な結合を絶ち、固定コイルと金属部材との
間に固定コイルの主面以上の大きさの磁性板を配置する
ことにより、金属部材に流れる渦電流を阻止し、渦電流
損をなくして固定コイルのＱの低下を防ぐことができ、
装置の正常な動作を維持でき、装置の信頼性を向上す
る。磁性板は、外部からの擾乱磁界に対する防護板にも
なり、伝送装置の誤動作の防止にも有効である。EFFECTS OF THE INVENTION A magnetic plate having a size larger than the main surface of the fixed coil is provided between the fixed coil and a metal member close to and opposed to a metal casing or an iron bridge. By arranging so as to shield magnetically, magnetic coupling between the fixed coil and the metal member is cut off, and by disposing a magnetic plate having a size larger than the main surface of the fixed coil between the fixed coil and the metal member, It is possible to prevent the eddy current flowing in the metal member, eliminate the eddy current loss, and prevent the Q of the fixed coil from decreasing.
The normal operation of the device can be maintained and the reliability of the device is improved. The magnetic plate also serves as a protective plate against a disturbing magnetic field from the outside, and is also effective in preventing malfunction of the transmission device.
【図面の簡単な説明】[Brief description of drawings]
【図１】図１は、本発明の一実施例を示す改札装置の要
部斜視図である。FIG. 1 is a perspective view of a main part of a ticket inspection apparatus showing an embodiment of the present invention.
【図２】図２は、本発明の他の実施例を示す、自動列車
停止装置の地上子の要部縦断面図である。FIG. 2 is a longitudinal sectional view of a main part of a grounding element of an automatic train stopping device, showing another embodiment of the present invention.
【図３】図３は、自動列車停止装置の情報伝送の構成の
一例を示す原理図である。FIG. 3 is a principle diagram showing an example of a configuration of information transmission of an automatic train stop device.
１ 地上子 ２、６ 固定コイル ３ 車上子 ４ 背壁 ５、１２ 磁性板 ７ 乗車券 ８ 移動コイル ９ 券走行路 １０ 鉄橋梁 １１ 樹脂性密閉容器 1 Ground Element 2, 6 Fixed Coil 3 Car Upper Element 4 Back Wall 5, 12 Magnetic Plate 7 Ticket 8 Moving Coil 9 Ticket Runway 10 Iron Bridge 11 Resin Sealed Container
Claims (1)
の片側で、移動体に備えた移動コイルが固定コイルと間
隔を置いて固定コイルに対向して情報の双方向伝送を行
う磁気通信装置において、固定コイルの主面以上の大き
さの磁性板を、固定コイルの移動コイルに対面する反対
側に、中心を固定コイルの軸線上にして固定コイルと固
定コイルに対面する金属部材との間に配置して、固定コ
イルと金属部材との磁気的結合を遮断するように構成し
たことを特徴とする磁気通信装置。1. A magnetic communication device for performing bidirectional transmission of information on one side in the axial direction of a fixed coil installed at a predetermined position, wherein a moving coil provided in a moving body faces the fixed coil at a distance from the fixed coil and faces the fixed coil. In the above, a magnetic plate having a size larger than the main surface of the fixed coil is provided on the opposite side of the fixed coil facing the moving coil, and between the fixed coil and the metal member facing the fixed coil with the center on the axis of the fixed coil. And a magnetic communication device configured to cut off magnetic coupling between the fixed coil and the metal member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5204631A JPH0746164A (en) | 1993-07-26 | 1993-07-26 | Magnetic communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5204631A JPH0746164A (en) | 1993-07-26 | 1993-07-26 | Magnetic communication equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0746164A true JPH0746164A (en) | 1995-02-14 |
Family
ID=16493675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5204631A Pending JPH0746164A (en) | 1993-07-26 | 1993-07-26 | Magnetic communication equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0746164A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000002212A1 (en) * | 1998-07-06 | 2000-01-13 | Abiomed, Inc. | Magnetic shield for primary coil of transcutaneous energy transfer device |
| JP2000259785A (en) * | 1999-03-05 | 2000-09-22 | Tamura Electric Works Ltd | Non-contact ic card reader |
| US6324431B1 (en) | 1998-07-06 | 2001-11-27 | Abiomed, Inc. | Transcutaneous energy transfer device with magnetic field protected components in secondary coil |
| US6324430B1 (en) | 1998-07-06 | 2001-11-27 | Abiomed, Inc. | Magnetic shield for primary coil of transcutaneous energy transfer device |
| WO2008018211A1 (en) * | 2006-08-07 | 2008-02-14 | Sony Chemical & Information Device Corporation | Magnetic sheet, antenna device, and method for manufacturing antenna device |
| JP2010093180A (en) * | 2008-10-10 | 2010-04-22 | Showa Aircraft Ind Co Ltd | Non-contact power supply |
| US8862232B2 (en) | 1998-07-06 | 2014-10-14 | Abiomed, Inc. | Transcutaneous energy transfer module with integrated conversion circuitry |
| US9002469B2 (en) | 2010-12-20 | 2015-04-07 | Abiomed, Inc. | Transcutaneous energy transfer system with multiple secondary coils |
| US9002468B2 (en) | 2011-12-16 | 2015-04-07 | Abiomed, Inc. | Automatic power regulation for transcutaneous energy transfer charging system |
| US9220826B2 (en) | 2010-12-20 | 2015-12-29 | Abiomed, Inc. | Method and apparatus for accurately tracking available charge in a transcutaneous energy transfer system |
| US9412513B2 (en) | 2012-03-30 | 2016-08-09 | Tdk Corporation | Wireless power transmission system |
| CN107222031A (en) * | 2016-03-22 | 2017-09-29 | Tdk株式会社 | Electric supply installation and Contactless power transmission device |
-
1993
- 1993-07-26 JP JP5204631A patent/JPH0746164A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8862232B2 (en) | 1998-07-06 | 2014-10-14 | Abiomed, Inc. | Transcutaneous energy transfer module with integrated conversion circuitry |
| US6324431B1 (en) | 1998-07-06 | 2001-11-27 | Abiomed, Inc. | Transcutaneous energy transfer device with magnetic field protected components in secondary coil |
| US6324430B1 (en) | 1998-07-06 | 2001-11-27 | Abiomed, Inc. | Magnetic shield for primary coil of transcutaneous energy transfer device |
| US6389318B1 (en) | 1998-07-06 | 2002-05-14 | Abiomed, Inc. | Magnetic shield for primary coil of transcutaneous energy transfer device |
| US6496733B2 (en) | 1998-07-06 | 2002-12-17 | Abiomed, Inc. | Transcutaneous energy transfer device with magnetic field protected components in secondary coil |
| WO2000002212A1 (en) * | 1998-07-06 | 2000-01-13 | Abiomed, Inc. | Magnetic shield for primary coil of transcutaneous energy transfer device |
| JP2000259785A (en) * | 1999-03-05 | 2000-09-22 | Tamura Electric Works Ltd | Non-contact ic card reader |
| WO2008018211A1 (en) * | 2006-08-07 | 2008-02-14 | Sony Chemical & Information Device Corporation | Magnetic sheet, antenna device, and method for manufacturing antenna device |
| JP2010093180A (en) * | 2008-10-10 | 2010-04-22 | Showa Aircraft Ind Co Ltd | Non-contact power supply |
| US9002469B2 (en) | 2010-12-20 | 2015-04-07 | Abiomed, Inc. | Transcutaneous energy transfer system with multiple secondary coils |
| US9220826B2 (en) | 2010-12-20 | 2015-12-29 | Abiomed, Inc. | Method and apparatus for accurately tracking available charge in a transcutaneous energy transfer system |
| US9002468B2 (en) | 2011-12-16 | 2015-04-07 | Abiomed, Inc. | Automatic power regulation for transcutaneous energy transfer charging system |
| US9412513B2 (en) | 2012-03-30 | 2016-08-09 | Tdk Corporation | Wireless power transmission system |
| CN107222031A (en) * | 2016-03-22 | 2017-09-29 | Tdk株式会社 | Electric supply installation and Contactless power transmission device |
| CN107222031B (en) * | 2016-03-22 | 2020-07-17 | Tdk株式会社 | Power supply device and wireless power transmission device |
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