JP2004096566A - Inductive communication equipment - Google Patents
Inductive communication equipment Download PDFInfo
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- JP2004096566A JP2004096566A JP2002257076A JP2002257076A JP2004096566A JP 2004096566 A JP2004096566 A JP 2004096566A JP 2002257076 A JP2002257076 A JP 2002257076A JP 2002257076 A JP2002257076 A JP 2002257076A JP 2004096566 A JP2004096566 A JP 2004096566A
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- 238000004891 communication Methods 0.000 title claims abstract description 60
- 230000001939 inductive effect Effects 0.000 title claims abstract description 34
- 230000008878 coupling Effects 0.000 claims abstract description 42
- 238000010168 coupling process Methods 0.000 claims abstract description 42
- 238000005859 coupling reaction Methods 0.000 claims abstract description 42
- 230000005540 biological transmission Effects 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims description 5
- 230000005236 sound signal Effects 0.000 description 5
- 230000005674 electromagnetic induction Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
Description
【0001】
【発明が属する技術分野】
本発明は、通信ケーブルシース又はメッセンジャーワイヤー等(本明細書においては、単に線状体と言う)のに結合して送受信を行う誘導通信装置に関する。
【0002】
【従来の技術】
従来、この種の誘導通信装置としては、平衡対メタルケーブルの絶縁心線に半割状のトロイダル型に巻回した半割状のトロイダル型コイルを装設し、このトロイダル型コイルから前記平衡対メタルケーブルに流れている信号を取出し、該平衡対メタルコイルに信号を流して送受信するように構成されたものが案出されている(例えば、特許文献1参照。)。
また、コイルを磁性体に巻付けるとともに同調回路を設けた電磁誘導結合器をトランシーバーに設けて、該電磁誘導結合器によって電磁誘導により受発信信号を制御するとともに、電力ケーブルシース又は配線等に各トランシーバーの電磁誘導結合器を電力ケーブルシース又は配線等に近接又は接触させて、一方のトランシーバーの発する電波を誘導して他方のトランシーバーでこれを受信して情報を相互に伝達するように構成されたものが案出されている(例えば、特許文献2参照。)。
【0003】
【特許文献1】
特開昭63−242033号公報(第2−3頁、第1図)
【特許文献2】
特開2000−286759号公報(第2−3頁、図3)
【0004】
【発明が解決しようとする課題】
しかしながら、上記した従来の装置にあって、前者のものにおいては、あくまでも、メタル通信線路の絶縁心線を切断することなく分岐して送受信を行うことにとどまるものあり、後者のものにおいては、とう道トンネル等の閉塞地域内という限られた通信にとどまるもので、片通信携帯式を基本にした無線通信で音声を伝送するものであった。
そこで、本発明は、上記した従来の両装置とは異なる誘導通信装置であって、例えば、工事、保守等臨時に、一時的な回線構成を必要とするときに使用でき、既設の線状体を利用した伝送回線を簡単かつ任意の区間に形成して送受信を可能とした誘導通信装置を提供することを目的とするものである。
【0005】
【課題を解決するための手段】
請求項1記載の発明にあっては、接地された通信線等の線状体の外周を囲むように配置されかつ半割り状に形成されたトロイダル型コイルからなる結合装置と、該結合装置とそれぞれ周波数同調回路を介して接続された送信装置及び受信装置とを備えた誘導通信装置であって、結合装置によって線状体に送信装置及び受信装置の出力を誘導させてアースリタン方式により誘導通信装置の相互間の送受信を行うように構成したことを要旨とする。
【0006】
この構成によれば、送受信装置のそれぞれの結合装置を線状体に配置することによって、該送信装置からの送信信号を結合装置により誘導してその送信信号を線状体に伝送し、線状体からの受信信号を結合装置により誘導して受信装置に伝送する送受信をアースリタン方式によって行うものであり、線状体を利用した伝送回線を簡単かつ任意の区間に形成して誘導通信装置の相互間の送受信を可能にするものである。
また、結合装置による誘導電力の増大を図るとともに、それぞれの送信装置及び受信装置との間に周波数同調回路を設けることにより、誘導通信装置として高品質でかつ多チャンネル化が可能となる。
【0007】
【発明の実施の形態】
以下、本発明を具体化した各実施の形態を図にしたがって詳述する。
図1に示すように、誘導通信装置1は、両端または任意の点で接地されている通信ケーブルのシース又はメッセンジャーワイヤー、吊線等の線状体2Aに配置される結合装置3Aと、該結合装置3Aにケーブル4Aを介して接続された送信装置5と、同じく通信ケーブルのシース又はメッセンジャーワイヤー等の線状体2Bに配置される結合装置3Bと、該結合装置3Bにケーブル4Bを介して接続された受信装置6とから構成されていて、親装置としての一つの誘導通信装置1Aと、該親装置としての誘導通信装置1Aと送受信可能な子装置としての誘導通信装置1aとを備えている。なお、子装置については、周波数分割で複数個、例えば、5台まで追加することができる。
【0008】
図2、図3に示すように、前記結合装置3Aはトロイダル型コイル7によりその主体部が構成され、該トロイダル型コイル7は半割り円形状に形成されるとともに、それぞれのコア7a、7bが半割り状のカバー部材8に装設されている。
【0009】
このカバー部材8は前記トロイダル型コイル7のそれぞれのコア7a、7bの外周を覆うように形成されたほぼ半円弧状の一対のカバー部8a、8bと、該カバー部8a、8bの一方端部に交差状に一体形成された握手部9a、9bとからなり、このカバー部8a、8bを握手部9a、9b側を支点として他方端部を開口及び閉口するように開閉動可能に組付けられるとともに、カバー部8a、8b(握手部9a、9b)間に弾装されたスプリング10により常にはカバー部8a、8bをその他方端部を閉口する方向に付勢されている。
【0010】
なお、カバー部8a、8bのいずれか一方には該結合装置3Aのトロイダル型コイル7と送信装置5とをケーブル4Aを介して接続するための接続端子11が形成されている。また、受信装置6側の結合装置3Bは前述した結合装置3Aと同様に構成されているためその説明を省略する。
【0011】
しかして、両結合装置3A、3Bは、図4、図5に示すように、線状体2A、2Bに対してその半割り構造を介して巻回状態で装設されるものである。
【0012】
また、図2a及び図6aに示すように、前記結合装置3A、3Bにおけるトロイダル型コイル7と送信装置5及び受信装置との間には、コンデンサ12aとトロイダル型コイル7に巻回されたコイル12bによる周波数同調回路12が設けられている。
【0013】
そして、この周波数同調回路12は、図6bに示すように、前記コンデンサ12aとトロイダル型コイル7に巻回されたコイル12bとを2ヶ所に設けて信号に位相差をもたした構成としてもよく、また、トロイダル型コイル7に巻回されたコイル12bと、さらに3つのコイル12c〜12c及びコンデンサ12a〜12aとを接続してフィルタ効果をもたすように構成してもよい。
【0014】
上述のように構成された親装置としての誘導通信装置1A及び複数の子装置としての誘導通信装置1aによる通信方法について説明する。
【0015】
さて、図1に示すように、親装置としての誘導通信装置1Aの送信装置5及び受信装置6のそれぞれの結合装置3A、3Bを線状体2A、2Bに対してその半割り構造を介して巻回状態で配置する。このように、線状体2A、2Bに分割することにより、送信出力が、受信装置に回り込み、妨害を与えのを防止することができる。
【0016】
すなわち、両結合装置3A、3Bにおいて、カバー部材8をスプリング10の付勢力に抗して開動作してその開口部から線状体2A(2B)の外周に対して嵌込み該カバー部材8の開動作を止めて、そのままスプリング10の付勢力により開口部を閉口して線状体2A(2B)に配置する。
【0017】
上記状態において、親装置としての誘導通信装置1Aにおける送信動作については、マイク(図示しない)等により外部から音声を入力すると、該音声の入力信号が音声増幅手段(図示しない)によって一定レベルに増幅されて送信装置5に入力され、該送信装置5において、その変調回路によって所定周波数の変調波に変換され、トロイダル型コイル7を主体とする結合装置3Aを介して線状体2Aに送出(伝送)される。
【0018】
そして、親装置としての誘導通信装置1Aと同様に線状体2A、2Bに対して両結合装置3A、3Bを介して配置された子装置としての誘導通信装置1aは同時に親装置としての誘導通信装置1Aからの信号を受信するものである。
【0019】
次いで、親装置としての誘導通信装置1Aにおける受信動作については、子装置としての誘導通信装置1aからそれぞれ異なった周波数で変調された信号を線状体2Bから結合装置3Bを介して受信装置6により受信し、該受信装置6において、子装置の周波数に該当する受信装置6により音声信号に変換されて音声増幅手段(図示しない)に入力され、該音声増幅手段により一定レベルに増幅されてスピーカ(図示しない)等により外部に音声を出力する。
【0020】
なお、前記トロイダル型コイル7を主体とする結合装置3A、3Bの動作原理については、一般に知られているように、線状体2A、2Bに信号電流が流れると、アンペアの右ねじの法則により、線状体2A、2Bの円周方向に磁界が生起し、その磁界が線状体2A、2Bの周囲にループ上に配置したトロイダル型コイル7に収束され、ニューマンの法則によりトロイダル型に巻回したコア7a、7bに起電力を生起する効果を利用するものである。
【0021】
次に、子装置としての誘導通信装置1aにおける送信動作については、親装置としての誘導通信装置1Aと同様にして、マイク(図示しない)等により外部から音声を入力すると、該音声の入力信号が音声増幅手段(図示しない)によって一定レベルに増幅されて送信装置5に入力され、該送信装置5において、自局に割り当てられた周波数に変調波に変換され、その変調された信号をトロイダル型コイル7を主体とする結合装置3Aを介して線状体2Aに送出(伝送)される。
【0022】
そして、親装置としての誘導通信装置1Aにおける結合装置3Bを介して受信装置6により受信し、親装置としての誘導通信装置1Aにおいて子装置の周波数に該当する受信装置6によりそれぞれの音声信号に変換されて音声増幅手段(図示しない)に入力され、該音声増幅手段により一定レベルに増幅されてスピーカ(図示しない)等により外部に音声を出力し、当該子装置としての誘導通信装置1aとの受信(通話)を行うものである。
【0023】
つぎに、子装置としての誘導通信装置1aにおける受信動作については、親装置としての誘導通信装置1Aと同様にして、該親装置としての誘導通信装置1Aからの信号を線状体2Aから結合装置3Aを介して受信装置6により受信し、該受信装置6によりそれぞれの音声信号に変換されて音声増幅手段(図示しない)に入力され、該音声増幅手段により一定レベルに増幅されてスピーカ(図示しない)等により外部に音声を出力する。
【0024】
以上のように、親装置としての誘導通信装置1Aと子装置としての誘導通信装置1aとの送受信(通話)を、両端または任意の点で接地されている線状体2A、2Bと、親装置としての誘導通信装置1Aと、子装置としての誘導通信装置1aとで形成されるアースリタン方式によって行うことができる。
【0025】
次に、図7に示す別の実施の形態について説明すると、この場合は、線状体2A、2Bを一般の電灯線2Cとした場合に対応する誘導通信装置1であって、送信装置5及び受信装置6の結合装置3Aに前記電灯線2Cのコンセント15に接続(結合)される差込プラグ16を設けた態様で、その余の構成は前述した実施の形態と同様であり、同様の構成については同符号を付してその説明を省略する。
【0026】
したがって、この実施の形態においては、誘導通信装置1における差込プラグ16を電灯線2Cのコンセント15に接続(結合)して、電灯線2Cを線状体として利用するものであり、前述した実施の形態と同様に、親装置としての誘導通信装置1と、子装置としての誘導通信装置1aとの双方向通信を行うことができる。
【0027】
【発明の効果】
請求項1に記載の発明にあっては、送受信装置のそれぞれの結合装置を線状体に配置することによって、該送信装置からの送信信号を結合装置により誘導してその送信信号を線状体に伝送し、線状体からの受信信号を結合装置により誘導して受信装置に伝送する送受信をアースリタン方式によって行うものであり、線状体を利用した伝送回線を簡単かつ任意の区間に形成して誘導通信装置の相互間の送受信を可能にすることができる。
【0028】
さらに、結合装置による誘導電力の増大を図るとともに、それぞれの送信装置及び受信装置との間に周波数同調回路を設けることにより、誘導通信装置として高品質でかつ多チャンネル化が可能となる。
【図面の簡単な説明】
【図1】本発明の実施の形態における誘導通信装置を略示する説明図である。
【図2】a、bは結合装置を略示する説明図である。
【図3】同じく、結合装置を略示する説明図である。
【図4】同じく、線状体に対する結合装置の配置状態を示す説明図である。
【図5】同じく、線状体に対する結合装置の配置状態を断面で示す説明図である。
【図6】a、b、cは同調回路の説明図である。
【図7】別の実施の形態における誘導通信装置を略示する説明図である。
【符号の説明】
1 誘導通信装置
2A、2B 線状体
3A、3B 結合装置
5 送信装置
6 受信装置
7 トロイダル型コイル
12 周波数同調回路[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an inductive communication device that performs transmission and reception by coupling to a communication cable sheath, a messenger wire, or the like (hereinafter, simply referred to as a linear body).
[0002]
[Prior art]
Conventionally, as this type of inductive communication device, a half-shaped toroidal coil wound in a half-shaped toroidal shape is mounted on the insulated core wire of a balanced pair metal cable, and the balanced pair is wound from this toroidal coil. There has been proposed a configuration in which a signal flowing through a metal cable is extracted, and a signal is transmitted to and received from the balanced pair metal coil (for example, see Patent Document 1).
In addition, the transceiver is provided with an electromagnetic induction coupler having a coil wound around a magnetic material and provided with a tuning circuit, and the transmission and reception signals are controlled by the electromagnetic induction by the electromagnetic induction coupler, and the power cable sheath or the wiring is connected to each other. The electromagnetic induction coupler of the transceiver is brought close to or in contact with the power cable sheath or wiring, etc., so that the radio wave emitted by one transceiver is guided, the other transceiver receives it, and transmits information to each other. Some have been devised (for example, see Patent Document 2).
[0003]
[Patent Document 1]
JP-A-63-242033 (pages 2-3, FIG. 1)
[Patent Document 2]
JP-A-2000-286759 (page 2-3, FIG. 3)
[0004]
[Problems to be solved by the invention]
However, in the above-mentioned conventional devices, the former device only performs transmission and reception without branching without cutting the insulated core wire of the metal communication line, and the latter device does not. It was limited to communication within a closed area such as a road tunnel, and transmitted voice by wireless communication based on one-way communication.
Therefore, the present invention relates to an inductive communication device different from the above-mentioned conventional devices, and can be used when a temporary line configuration is required, for example, for temporary work such as construction and maintenance. It is an object of the present invention to provide an inductive communication device which can easily transmit and receive data by simply forming a transmission line using an arbitrary section.
[0005]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided a coupling device comprising a toroidal coil which is disposed so as to surround an outer periphery of a linear body such as a grounded communication line, and is formed in a half-split shape. An inductive communication device comprising a transmitting device and a receiving device each connected via a frequency tuning circuit, wherein the output of the transmitting device and the receiving device is guided to a linear body by a coupling device, and the inductive communication device is configured by an earth return method. The gist of the present invention is that transmission and reception are performed between each other.
[0006]
According to this configuration, by arranging the respective coupling devices of the transmission / reception devices in the linear body, the transmission signal from the transmission device is guided by the coupling device, and the transmission signal is transmitted to the linear body. The transmission and reception of the signal received from the body by the coupling device and transmission to the receiving device is performed by the earth return method. It enables transmission and reception between the devices.
In addition, by increasing the induced power by the coupling device and providing a frequency tuning circuit between each transmitting device and receiving device, it is possible to achieve high quality and multi-channel as an inductive communication device.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, an
[0008]
As shown in FIGS. 2 and 3, the main body of the
[0009]
The cover member 8 includes a pair of substantially
[0010]
A
[0011]
Thus, as shown in FIGS. 4 and 5, the two
[0012]
As shown in FIGS. 2A and 6A, a
[0013]
As shown in FIG. 6B, the
[0014]
A communication method using the
[0015]
Now, as shown in FIG. 1, the
[0016]
That is, in both the
[0017]
In the above state, in the transmission operation of the
[0018]
Then, similarly to the
[0019]
Next, regarding the receiving operation in the
[0020]
As generally known, when a signal current flows through the
[0021]
Next, as for the transmission operation in the
[0022]
The signal is received by the receiving
[0023]
Next, as for the receiving operation in the
[0024]
As described above, transmission / reception (communication) between the
[0025]
Next, another embodiment shown in FIG. 7 will be described. In this case, the
[0026]
Therefore, in this embodiment, the
[0027]
【The invention's effect】
According to the first aspect of the present invention, by arranging the respective coupling devices of the transmission and reception devices in a linear body, the transmission signal from the transmission device is guided by the coupling device, and the transmission signal is converted into a linear body. Transmission and transmission to the receiving device by guiding the received signal from the linear body by the coupling device and transmitting it to the receiving device by the earth return method.The transmission line using the linear body is formed in a simple and arbitrary section. Thus, transmission and reception between the guidance communication devices can be enabled.
[0028]
Furthermore, by increasing the induced power by the coupling device and providing a frequency tuning circuit between each transmitting device and each receiving device, it is possible to achieve high quality and multi-channel as an inductive communication device.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram schematically illustrating a guidance communication device according to an embodiment of the present invention.
FIGS. 2a and 2b are explanatory views schematically showing a coupling device.
FIG. 3 is an explanatory view schematically showing a coupling device.
FIG. 4 is an explanatory view showing an arrangement state of a coupling device with respect to a linear body.
FIG. 5 is an explanatory view showing the arrangement of the coupling device with respect to the linear body in a cross section.
FIGS. 6A, 6B and 6C are explanatory diagrams of a tuning circuit.
FIG. 7 is an explanatory diagram schematically illustrating a guidance communication device according to another embodiment.
[Explanation of symbols]
DESCRIPTION OF
Claims (1)
Priority Applications (1)
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