JP4749312B2 - Wireless transmission equipment, radio-powerless relay equipment - Google Patents

Wireless transmission equipment, radio-powerless relay equipment Download PDF

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JP4749312B2
JP4749312B2 JP2006314449A JP2006314449A JP4749312B2 JP 4749312 B2 JP4749312 B2 JP 4749312B2 JP 2006314449 A JP2006314449 A JP 2006314449A JP 2006314449 A JP2006314449 A JP 2006314449A JP 4749312 B2 JP4749312 B2 JP 4749312B2
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power transmission
relay device
device provided
tower
directivity
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JP2008131371A (en
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佳之 松田
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Chugoku Electric Power Co Inc
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Description

本発明は、鉄塔間の通信を中継する無線伝送装置、電波の無給電中継装置に関する。   The present invention relates to a wireless transmission device that relays communication between steel towers, and a radio-powerless relay device.

架空送電路を構成する送電線鉄塔列においては、周辺の安全や無事故送電を阻害するおそれのある状況、例えば、落雷、風、氷雪などの気象状況、人為的破壊等の異常発生情報等を鉄塔ごとに常時監視する必要がある。   In the transmission line towers that make up an overhead power transmission line, information on the surroundings that may interfere with safety and accident-free transmission, for example, weather conditions such as lightning, wind, ice and snow, and information on occurrence of abnormalities such as human destruction, etc. It is necessary to monitor every time.

従来、特許文献１には、架空送電路を構成する各鉄塔に基地局を設け、ある鉄塔に設けられた基地局から最も近い鉄塔に設けられた基地局に情報を順次中継していくことで、最終的に所定の情報収集局（監視局）に情報を伝送するシステムが開示されている。この発明では、鉄塔間の通信にＵＨＦ、ＳＨＦの電波を使用している。この周波数帯の電波は、光の性状に近いふるまいをすることが良く知られている。すなわち、直進性が強く、遮蔽物の向こうには電波が到達しにくいという性質である。   Conventionally, in Patent Document 1, a base station is provided for each steel tower constituting the overhead power transmission path, and information is sequentially relayed from a base station provided on a certain steel tower to a base station provided on the nearest steel tower. A system that finally transmits information to a predetermined information collection station (monitoring station) is disclosed. In the present invention, UHF and SHF radio waves are used for communication between steel towers. It is well known that radio waves in this frequency band behave like light properties. That is, it is a property that the straightness is strong and the radio wave hardly reaches beyond the shield.

架空送電路は、一般的に、発電所、変電所、開閉所を最短距離に接続する直線状に構成されることが多く、直進性の強い電波を利用しても問題なくシステムを構成することができる。
特開２００５−２２９７１５号公報 Overhead power transmission lines are generally configured in a straight line that connects power stations, substations, and switch stations to the shortest distance, so that a system can be configured without any problems even if radio waves with high straightness are used. Can do.
JP 2005-229715 A

上述のように、特許文献１記載の発明は、直線状に配列された基地局を中継しながら情報を伝送する。この構成では、送電用鉄塔列にある途中の基地局が通信不能になった場合、そのひとつ向こうの基地局が見通し範囲内であれば、通信不能となった基地局を飛ばして新たなネットワークを再構成することが可能となるが、送電線が山を越えている場合や障害物を迂回している場合は、送信元の基地局と送信先の基地局とが見通し範囲外となり、システムの機能が停止するおそれがある。   As described above, the invention described in Patent Document 1 transmits information while relaying the base stations arranged in a straight line. In this configuration, when a base station in the middle of a power transmission tower is incapable of communication, if the base station in the other side is within the line-of-sight range, the base station that has lost communication is skipped and a new network is established. It is possible to reconfigure, but if the transmission line crosses a mountain or bypasses an obstacle, the source base station and the destination base station are out of line of sight, and the system The function may stop.

そこで、基地局を鉄塔の上部に設置にすると、障害物が少なくなり、基地局の見通し範囲が広がる。しかし、基地局を鉄塔の上部に設置すると、メンテナンスなどの度に作業員が鉄塔の上部に登って、高所作業をしなければならない。また、アンテナのみを鉄塔の上部に延長して取り付けることも可能であるが、この場合、給電線の損失が非常に大きくなるため、設備構築のコストアップにつながる可能性が高い。   Therefore, if the base station is installed at the top of the steel tower, the number of obstacles will be reduced and the range of the base station will be expanded. However, if the base station is installed at the top of the tower, workers must climb up the tower to work at high places for maintenance. In addition, it is possible to extend only the antenna to the upper part of the steel tower, but in this case, since the loss of the feeder line becomes very large, there is a high possibility that the cost for constructing the equipment will increase.

本発明は、かかる課題に鑑みてなされたものであり、その目的とするところは、鉄塔間の通信を中継する通信装置において、作業員の負担を増加させることなく、通信の安定性を向上させることができる無線伝送装置、及び、電波の無給電中継装置を提供することにある。   The present invention has been made in view of such a problem, and an object of the present invention is to improve the stability of communication in a communication device that relays communication between towers without increasing the burden on workers. It is an object of the present invention to provide a wireless transmission device and a radioless parasitic relay device.

前記課題を解決するための発明は、架空送電路を構成する送電用鉄塔に設けられる無線伝送装置であって、前記送電用鉄塔の上部に設けられる無給電中継装置と、前記送電用鉄塔の下部に設けられる無線通信装置と、を備え、前記無給電中継装置は、２方向に指向性を有する第１〜第３のアンテナユニットを組み合わせてなり、第１のアンテナユニットは隣接する２つの送電用鉄塔の上部に設けられた無給電中継装置に指向性が向くように設置され、第２のアンテナユニットは隣接する一方の送電用鉄塔の上部に設けられた無給電中継装置と、当該送電用鉄塔の下部に設けられた前記無線通信装置とに指向性が向くように設置され、第３のアンテナユニットは隣接する他方の送電用鉄塔の上部に設けられた無給電中継装置と、当該送電用鉄塔の下部に設けられた前記無線通信装置とに指向性が向くように設置されていることを特徴とする無線伝送装置である。 The invention for solving the above-mentioned problems is a wireless transmission device provided in a power transmission tower that constitutes an overhead power transmission path, and includes a parasitic relay device provided in an upper portion of the power transmission tower, and a lower portion of the power transmission tower. And the parasitic relay device is a combination of first to third antenna units having directivity in two directions, and the first antenna unit is for two adjacent power transmission devices. The second antenna unit is installed so that the directivity is directed to a parasitic relay device provided at the upper part of the steel tower, and the second antenna unit is provided at the upper part of the adjacent one of the power transmission towers, and the power transmission tower. The third antenna unit is installed in the upper part of the other power transmission tower adjacent to the wireless communication apparatus provided in the lower part of the wireless communication apparatus, and the power transmission tower. The wireless transmission device is installed so as to have directivity to the wireless communication device provided in the lower part of the wireless communication device .

また、前記課題を解決するための発明は、架空送電路を構成する送電線鉄塔の上部に設けられる電波の無給電中継装置であって、２方向に指向性を有する第１〜第３のアンテナユニットを組み合わせてなり、第１のアンテナユニットは隣接する２つの送電用鉄塔の上部に設けられた無給電中継装置に指向性が向くように設置され、第２のアンテナユニットは隣接する一方の送電用鉄塔の上部に設けられた無給電中継装置と、当該送電用鉄塔の下部に設けられた前記無線通信装置とに指向性が向くように設置され、第３のアンテナユニットは隣接する他方の送電用鉄塔の上部に設けられた無給電中継装置と、当該送電用鉄塔の下部に設けられた前記無線通信装置とに指向性が向くように設置されていることを特徴とする無給電中継装置である。 Moreover, the invention for solving the above-mentioned problems is a non-feeding relay apparatus for radio waves provided at an upper part of a transmission line tower that constitutes an overhead power transmission path, wherein the first to third antennas having directivity in two directions Combining the units, the first antenna unit is installed so that the directivity is directed to the parasitic relay device provided at the upper part of two adjacent power transmission towers, and the second antenna unit is one of the adjacent power transmission units The third antenna unit is installed in the other power transmission adjacent to the non-feed relay device provided in the upper part of the steel tower and the wireless communication device provided in the lower part of the power transmission tower. A parasitic relay device, wherein the parasitic relay device provided at the top of the power tower and the wireless communication device provided at the bottom of the power transmission tower are installed so as to have directivity. is there.

本発明によれば、鉄塔間の通信を中継する通信装置において、作業員の負担を増加させることなく、通信の安定性を向上させることができる。   ADVANTAGE OF THE INVENTION According to this invention, in the communication apparatus which relays communication between steel towers, the stability of communication can be improved, without increasing a worker's burden.

＝＝＝全体構成＝＝＝
以下、図面を参照しつつ本発明の一実施の形態について説明する。 === Overall structure ===
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

図１は、送電用鉄塔１の間でデータを伝送する通信システムの構成を説明する模式図である。送電用鉄塔１は、送電線を架設する鉄塔である。複数の送電用鉄塔１からなる送電用鉄塔列は、各送電用鉄塔１で取得された情報を所定の情報収集局（図示せず）へ無線伝送するための架空送電路を構成する。   FIG. 1 is a schematic diagram illustrating a configuration of a communication system that transmits data between power transmission towers 1. The power transmission tower 1 is a steel tower on which a transmission line is erected. A power transmission tower array composed of a plurality of power transmission towers 1 constitutes an overhead power transmission path for wirelessly transmitting information acquired by each power transmission tower 1 to a predetermined information collection station (not shown).

送電用鉄塔１には、無線ＬＡＮ（Local Area Network）の基地局２（無線通信装置）が設けられている。無線ＬＡＮなどで用いられる２．４ＧＨｚ帯の電波は、電波法の制限上、大規模なアンテナを付けることはできない。そこで、送電用鉄塔列は、直接通信をするのではなく、送電用鉄塔１−１、送電用鉄塔１−２、・・・のように順次データを中継していく。   The power transmission tower 1 is provided with a wireless LAN (Local Area Network) base station 2 (wireless communication device). A 2.4 GHz band radio wave used in a wireless LAN or the like cannot be provided with a large-scale antenna due to limitations of the Radio Law. Therefore, the power transmission tower train does not communicate directly, but sequentially relays data like the power transmission tower 1-1, the power transmission tower 1-2, and so on.

なお、以下の説明では、説明の対象となる各送電用鉄塔１を区別する場合は、送信順序を示す添え字を付して、送電用鉄塔１−（ｉ−１）、送電用鉄塔１−（ｉ）、送電用鉄塔を１−（ｉ＋１）のように記載し、また、基地局２及び後述する無給電中継装置３もそれらが設置された送電用鉄塔１と同じ添え字を付けるものとする。   In the following description, when each transmission tower 1 to be described is distinguished, a subscript indicating the transmission order is attached, and the transmission tower 1- (i-1), the transmission tower 1- (I) The power transmission tower is described as 1- (i + 1), and the base station 2 and the parasitic relay device 3 described later also have the same subscript as the power transmission tower 1 in which they are installed. To do.

図２は、各送電用鉄塔１の構造を示す模式図である。図２に示すように、送電用鉄塔１の基部には基地局２、送電用鉄塔１の上部にはアンテナである無給電中継装置３が設けられている。なお、図２では、電波の送信方向を矢印で示している。送電用鉄塔１−（ｉ−１）の無給電中継装置３−（ｉ−１）からの電波は、送電用鉄塔１−（ｉ）の無給電中継装置３−（ｉ）に向けて放射され、無給電中継装置３−（ｉ）により、基地局２−（ｉ）に向けて放射される。基地局２−（ｉ）は、無給電中継装置３−（ｉ）から受信した電波を無給電中継装置３−（ｉ）に向けて出力する。無給電中継装置３−（ｉ）は、基地局２−（ｉ）からの電波を、次の送電用鉄塔１−（ｉ＋１）の無給電中継装置３−（ｉ＋１）に向けて放射する。   FIG. 2 is a schematic diagram showing the structure of each power transmission tower 1. As shown in FIG. 2, a base station 2 is provided at the base of the power transmission tower 1, and a parasitic relay device 3 that is an antenna is provided above the power transmission tower 1. In FIG. 2, the radio wave transmission direction is indicated by arrows. Radio waves from the parasitic relay device 3- (i-1) of the transmission tower 1- (i-1) are radiated toward the parasitic relay device 3- (i) of the transmission tower 1- (i). And radiated toward the base station 2- (i) by the non-feed relay device 3- (i). The base station 2- (i) outputs the radio wave received from the parasitic relay device 3- (i) toward the parasitic relay device 3- (i). The parasitic relay device 3- (i) radiates radio waves from the base station 2- (i) toward the parasitic relay device 3- (i + 1) of the next power transmission tower 1- (i + 1).

無給電中継装置３が設置された送電用鉄塔１の上部は、おおむね地上高３０ｍから６０ｍ程度と非常に見通しがよい。無線ＬＡＮなどで用いられるギガヘルツ帯の電波は、直進性が強く、遮蔽物の向こうには電波が到達しにくいという性質があるが、高所に設置することで、見通し範囲が広くなり、良好な電波伝搬特性が得られる。また、基地局２を地上近くに設置するので、作業員が送電用鉄塔１上部に登らなくとも基地局２のメンテナンス作業を行うことができる。   The upper part of the power transmission tower 1 where the parasitic relay device 3 is installed has a very good prospect of about 30 to 60 m above the ground. Gigahertz band radio waves used in wireless LANs, etc. have strong straight-line characteristics and are difficult to reach beyond the shield. Radio wave propagation characteristics can be obtained. Moreover, since the base station 2 is installed near the ground, the maintenance work of the base station 2 can be performed without an operator climbing up the power transmission tower 1.

図３は、無給電中継装置３の構成図である。無給電中継装置３は、３つのアンテナユニット４Ａ、４Ｂ、４Ｃからなる。各アンテナユニット４Ａ、４Ｂ、４Ｃは、２つのアンテナ６ａ、６ｂと、これらアンテナ６ａ、６ｂをそれぞれ収容する２つのアンテナケース５ａ、５ｂと、アンテナ６ａ、６ｂを接続する同軸ケーブル７と、を備えている。同軸ケーブル７は、アンテナケース５ａ、５ｂに設けられたコネクタ１６を介してアンテナ６ａ、６ｂを接続している。   FIG. 3 is a configuration diagram of the parasitic relay device 3. The parasitic relay device 3 includes three antenna units 4A, 4B, and 4C. Each antenna unit 4A, 4B, and 4C includes two antennas 6a and 6b, two antenna cases 5a and 5b that accommodate the antennas 6a and 6b, respectively, and a coaxial cable 7 that connects the antennas 6a and 6b. ing. The coaxial cable 7 connects the antennas 6a and 6b via connectors 16 provided on the antenna cases 5a and 5b.

アンテナ６ａ、６ｂは、同じ構成を有している。図４（Ａ）、（Ｂ）に、アンテナ６ａ、６ｂの構造を示す。なお、同図（Ａ）はアンテナ６ａ、６ｂの表面、同図（Ｂ）アンテナ６ａ、６ｂの裏面を示す。アンテナ６ａ、６ｂは、プリント基板１０の表面にコネクタ１６に近いほうから順に反射素子１１、輻射素子１２、導波素子１３が銅箔でプリントされて構成されている。プリント基板１０には、ガラスエポキシ基板のように柔軟性のある素材を使用する。輻射素子１２は、折返しダイポールアンテナであり、その両端は、プリント基板１０に設けられたスルーホール１３を通って、プリント基板１０の裏面に設けられた給電線１４、及び、インピーダンスマッチングのためのスタブ１５に接続される。給電線１４は、コネクタ１６に接続されており、上記のように、このコネクタ１６に接続された同軸ケーブル７を介して他方のアンテナ６ａ又は６ｂのコネクタ１６に接続されている。従って、アンテナ６ａが受信した電波は、同軸ケーブル７を通って、アンテナ６ｂから放射され、アンテナ６ｂが受信した電波は、同軸ケーブル７を通って、アンテナ６ａから放射される。   The antennas 6a and 6b have the same configuration. 4A and 4B show the structures of the antennas 6a and 6b. 2A shows the front surfaces of the antennas 6a and 6b, and FIG. 2B shows the back surfaces of the antennas 6a and 6b. The antennas 6 a and 6 b are configured by printing a reflective element 11, a radiating element 12, and a waveguide element 13 on a surface of the printed board 10 in order from the side closer to the connector 16 with a copper foil. The printed board 10 is made of a flexible material such as a glass epoxy board. The radiating element 12 is a folded dipole antenna, and both ends of the radiating element 12 pass through through holes 13 provided in the printed circuit board 10, feed lines 14 provided on the back surface of the printed circuit board 10, and stubs for impedance matching. 15 is connected. The feeder 14 is connected to the connector 16 and is connected to the connector 16 of the other antenna 6a or 6b via the coaxial cable 7 connected to the connector 16 as described above. Therefore, the radio wave received by the antenna 6a is radiated from the antenna 6b through the coaxial cable 7, and the radio wave received by the antenna 6b is radiated from the antenna 6a through the coaxial cable 7.

このアンテナ６ａ、６ｂは、反射素子１１から導波素子１３への方向、すなわち、図面矢印方向の指向性を有する。したがって、アンテナユニット４Ａ〜４Ｃは、それぞれのアンテナ６ａ、６ｂの指向性により、２方向の指向性を有することとなり、同軸ケーブル７を屈曲させることで電波の伝搬方向を変化させることができる。   The antennas 6a and 6b have directivity in the direction from the reflective element 11 to the waveguide element 13, that is, in the direction of the arrow in the drawing. Therefore, the antenna units 4 </ b> A to 4 </ b> C have two directions of directivity depending on the directivity of the respective antennas 6 a and 6 b, and the radio wave propagation direction can be changed by bending the coaxial cable 7.

図３の無給電中継装置３−（ｉ）とすると、この無給電中継装置３−（ｉ）では、アンテナユニット４Ａの指向性を手前の送電用鉄塔１−（ｉ−１）に設けられた無給電中継装置３−（ｉ−１）と次の送電用鉄塔１−（ｉ＋１）に設けられた無給電中継装置３−（ｉ＋１）とに向け、アンテナユニット４Ｂの指向性を手前の送電用鉄塔１−（ｉ−１）に設けられた無給電中継装置３−（ｉ−１）と基地局２−（ｉ）とに向け、アンテナユニット４Ｃの指向性を次の送電用鉄塔１−（ｉ＋１）に設けられた無給電中継装置２−（ｉ＋１）と基地局２−（ｉ）に向けている。   When the parasitic relay device 3- (i) in FIG. 3 is used, in this parasitic relay device 3- (i), the directivity of the antenna unit 4A is provided in the power transmission tower 1- (i-1) in the foreground. The directivity of the antenna unit 4B is set to the front for the parasitic relay device 3- (i-1) and the parasitic relay device 3- (i + 1) provided in the next power transmission tower 1- (i + 1). The directivity of the antenna unit 4C is set to the next power transmission tower 1- (1) toward the parasitic relay apparatus 3- (i-1) and the base station 2- (i) provided in the tower 1- (i-1). It is directed to the non-feed relay device 2- (i + 1) and the base station 2- (i) provided in i + 1).

このようにアンテナユニット４Ａ、４Ｂ、４Ｃを配置することで、図５に示すように、手前の送電用鉄塔１−（ｉ―１）に設けられた無給電中継装置３−（ｉ−１）と次の送電用鉄塔１−（ｉ＋１）に設けられた無給電中継装置３−（ｉ＋１）とを繋ぐ第１経路、手前の送電用鉄塔１−（ｉ−１）に設けられた無給電中継装置３−（ｉ−１）と基地局２−（ｉ）とを繋ぐ第２経路、基地局２−（ｉ）と次の送電用鉄塔１−（ｉ＋１）に設けられた無給電中継装置３−（ｉ＋１）とを繋ぐ第３経路の３つの経路を電波が伝播する。   By arranging the antenna units 4A, 4B, and 4C in this way, as shown in FIG. 5, the parasitic relay device 3- (i-1) provided in the front power transmission tower 1- (i-1) is provided. The first path connecting the power transmission tower 1- (i + 1) to the next power transmission tower 1- (i + 1), the powerless relay provided in the front power transmission tower 1- (i-1) The second path connecting the device 3- (i-1) and the base station 2- (i), the parasitic relay device 3 provided in the base station 2- (i) and the next power transmission tower 1- (i + 1). The radio wave propagates through three paths of the third path connecting-(i + 1).

これにより、手前の無給電中継装置３−（ｉ−１）からの電波は第２経路を通って基地局２−（ｉ）に向けて放射されるとともに第１経路を通って無給電中継装置３−（ｉ＋１）に向けて放射され、基地局２−（ｉ）からの電波は第３経路を通って次の無給電中継装置３−（ｉ＋１）に放射される。   Thereby, the radio wave from the parasitic feed relay device 3- (i-1) on the near side is radiated toward the base station 2- (i) through the second path and the parasitic feed relay device through the first path. 3- (i + 1) is radiated toward the base station 2- (i), and the radio wave from the base station 2- (i) is radiated to the next parasitic relay device 3- (i + 1) through the third path.

図６は、基地局２の構成を示すブロック図である。基地局２は、無給電中継装置３と通信するアンテナ２１、無線ＬＡＮ等の所定のプロトコルに従い通信を制御する通信制御部２２、外部機器からデータを入力する入力インターフフェイス２３を備える。   FIG. 6 is a block diagram showing the configuration of the base station 2. The base station 2 includes an antenna 21 that communicates with the parasitic relay device 3, a communication control unit 22 that controls communication according to a predetermined protocol such as a wireless LAN, and an input interface 23 that inputs data from an external device.

アンテナ２１は、無給電中継装置３から放射された電波を受信したり、無給電中継装置３に向けて電波を出力する。   The antenna 21 receives radio waves radiated from the parasitic relay device 3 and outputs radio waves toward the parasitic relay device 3.

また、通信制御部２２は、入力インターフェイス２３を介して外部機器に接続されている。外部機器は、例えば、安全や無事故送電の阻害原因、落雷、強風、氷雪などの気象状況、及び、人為的破壊等の異常事態発生などの監視情報を通信制御部２３に供給する。通信制御部２３は、アンテナ２１が受信した電波で搬送された情報を抽出し、これに外部機器から供給された情報を付加して電波にのせてアンテナ２１から出力する。アンテナ２１から放射された電波は、無給電中継装置３−（ｉ）により次の基地局２−（ｉ＋１）に放射される。このデータは、基地局２−（ｉ＋２）、基地局２−（ｉ＋３）、・・・と各基地局で必要に応じて情報が付加されながら順次中継され、最終的な送信先である情報収集局に到達する。   The communication control unit 22 is connected to an external device via the input interface 23. The external device supplies the communication control unit 23 with monitoring information such as the cause of safety and accident-free transmission, weather conditions such as lightning, strong winds, and ice and snow, and occurrence of abnormal situations such as human destruction. The communication control unit 23 extracts the information carried by the radio wave received by the antenna 21, adds the information supplied from the external device to this, puts it on the radio wave, and outputs it from the antenna 21. The radio wave radiated from the antenna 21 is radiated to the next base station 2- (i + 1) by the parasitic relay device 3- (i). This data is sequentially relayed while adding information as necessary at each base station, such as base station 2- (i + 2), base station 2- (i + 3),..., Collecting information as a final transmission destination Reach the station.

以上、本実施の形態における通信装置は、基地局２を送電用鉄塔１の基部、無給電中継装置３を送電用鉄塔１の上部に設けることで、基地局２のメンテナンスが高所作業でなくなる。これにより作業員の負担を増加させることなく通信範囲を拡大することができる。   As described above, in the communication device according to the present embodiment, the base station 2 is provided at the base of the power transmission tower 1 and the parasitic relay device 3 is provided at the top of the power transmission tower 1 so that the maintenance of the base station 2 is not a work at a high place. . As a result, the communication range can be expanded without increasing the burden on the worker.

さらに、本実施の形態では、ある基地局２−（ｉ）に不具合が生じたとき、図５の第１経路により無給電中継装置３（ｉ−１）から基地局２−（ｉ）を経由せずに直接無給電中継装置３−（ｉ＋１）へ向けて電波が放射されるので、無給電中継装置３（ｉ−１）５お無給電中継装置３（ｉ＋１）との見通しが悪いときにも中継が途切れることはない。   Furthermore, in the present embodiment, when a problem occurs in a certain base station 2- (i), it passes through the base station 2- (i) from the parasitic relay device 3 (i-1) by the first route in FIG. Since the radio waves are radiated directly to the parasitic relay device 3- (i + 1) without the prospect of the parasitic relay device 3 (i-1) 5 and the parasitic relay device 3 (i + 1) being poor. Even the relay will not be interrupted.

なお、基地局２−（ｉ）の正常動作時には、第１経路を通った電波と、第２経路及び第３経路を通った電波との両方が次の送電用鉄塔１−（ｉ＋１）の基地局２−（ｉ＋１）に到達し、また、送電用鉄塔１−（ｉ−１）と送電用鉄塔１−（ｉ＋１）の見通しがよい場合、無給電中継装置３−（ｉ−１）からの電波と無給電中継装置３−（ｉ）からの電波の両方が、基地局２−（ｉ）に到達することになるが、基地局２−（ｉ）は、無線ＬＡＮが有するＣＳＭＡ／ＣＤ（Carrier Sense Access with Collision Detection）の機能により、データの衝突を起こさないように管理している。   During normal operation of the base station 2- (i), both the radio wave passing through the first path and the radio wave passing through the second path and the third path are transmitted to the base of the next power transmission tower 1- (i + 1). When the station 2- (i + 1) is reached and the lines of power transmission tower 1- (i-1) and power transmission tower 1- (i + 1) are good, Both the radio wave and the radio wave from the non-feed relay device 3- (i) reach the base station 2- (i). The base station 2- (i) has a CSMA / CD ( Carrier Sense Access with Collision Detection) is managed to prevent data collisions.

また、本実施の形態では、アンテナケース５ａ、５ｂとして、ＦＲＰ（Fiberglass Reinforced Plastics）のように耐候性、耐久性の優れた素材を用い、アンテナ６ａ、６ｂを保護するため、アンテナユニット４の維持点検作業の頻度が少なくてすむので、維持にかかる労力が低くなる。   In the present embodiment, the antenna cases 5a and 5b are made of a material having excellent weather resistance and durability such as FRP (Fiberglass Reinforced Plastics), and the antennas 6a and 6b are protected. Since less frequent inspection work is required, the labor required for maintenance is reduced.

また、ギガヘルツ帯のアンテナ６は非常に小型かつ軽量であるため、送電線作業の邪魔になることもなく、送電線鉄塔１の受風面積に影響を与えることもない。   Further, since the gigahertz band antenna 6 is very small and light, it does not interfere with the transmission line work and does not affect the wind receiving area of the transmission line tower 1.

さらに、鉄塔間通信に無線ＬＡＮの電波を利用することにより、送電線周辺での無線ＬＡＮ利用の利便性が向上する。   Furthermore, the convenience of using the wireless LAN around the power transmission line is improved by using the radio wave of the wireless LAN for the communication between the towers.

以上、上記実施形態は本発明の理解を容易にするためのものであり、本発明を限定して解釈するためのものではない。本発明は、その趣旨を逸脱することなく、変更、改良され得ると共に、本発明にはその等価物も含まれる。   As mentioned above, the said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention includes equivalents thereof.

さらに、本実施の形態では、無線の電波は、無線ＬＡＮで使用されるギガヘルツ帯としたが、他の周波数帯の電波を用いてもよい。   Furthermore, in this embodiment, the radio wave is a gigahertz band used in a wireless LAN, but a radio wave in another frequency band may be used.

送電用鉄塔間の通信システムの構成を説明する模式図である。It is a schematic diagram explaining the structure of the communication system between the towers for power transmission. 送電用鉄塔の構造を示す模式図である。It is a schematic diagram which shows the structure of the power transmission tower. 無給電中継装置の構成図である。It is a block diagram of a parasitic feed relay device. アンテナの構成図である。It is a block diagram of an antenna. 無給電中継装置を通過する電波の伝播経路を示す模式図である。It is a schematic diagram which shows the propagation path of the electromagnetic wave which passes a parasitic feed relay apparatus. 基地局の機能構成を示すブロック図である。It is a block diagram which shows the function structure of a base station.

符号の説明Explanation of symbols

１ 送電用鉄塔 ２ 基地局
３ 無給電中継装置 ４ アンテナユニット
６ アンテナ ７ 同軸ケーブル
１０ プリント基板 １１ 反射素子
１２ 輻射素子 １３ スルーホール
１４ 給電線 １５ スタブ
２１ アンテナ ２２ 通信制御部
２３ 入力インターフェイス DESCRIPTION OF SYMBOLS 1 Transmission tower 2 Base station 3 Parasitic relay apparatus 4 Antenna unit 6 Antenna 7 Coaxial cable 10 Printed circuit board 11 Reflective element 12 Radiation element 13 Through hole 14 Feed line 15 Stub 21 Antenna 22 Communication control part 23 Input interface

Claims (4)

架空送電路を構成する送電用鉄塔に設けられる無線伝送装置であって、
前記送電用鉄塔の上部に設けられる無給電中継装置と、
前記送電用鉄塔の下部に設けられる無線通信装置と、
を備え、
前記無給電中継装置は、２方向に指向性を有する第１〜第３のアンテナユニットを組み合わせてなり、
第１のアンテナユニットは隣接する２つの送電用鉄塔の上部に設けられた無給電中継装置に指向性が向くように設置され、
第２のアンテナユニットは隣接する一方の送電用鉄塔の上部に設けられた無給電中継装置と、当該送電用鉄塔の下部に設けられた前記無線通信装置とに指向性が向くように設置され、
第３のアンテナユニットは隣接する他方の送電用鉄塔の上部に設けられた無給電中継装置と、当該送電用鉄塔の下部に設けられた前記無線通信装置とに指向性が向くように設置されていることを特徴とする無線伝送装置。 A wireless transmission device provided in a power transmission tower constituting an overhead power transmission path,
A parasitic relay device provided at an upper part of the power transmission tower,
A wireless communication device provided in a lower portion of the power transmission tower;
With
The parasitic relay device is a combination of first to third antenna units having directivity in two directions,
The first antenna unit is installed so that directivity is directed to the parasitic relay device provided at the upper part of two adjacent power transmission towers,
The second antenna unit is installed so that directivity is directed to the parasitic relay device provided at the upper part of one of the adjacent transmission towers and the wireless communication device provided at the lower part of the transmission tower,
The third antenna unit is installed so that directivity is directed to the parasitic relay device provided in the upper part of the other adjacent power transmission tower and the wireless communication device provided in the lower part of the power transmission tower. wireless transmission apparatus characterized by there. 前記アンテナユニットは、それぞれ、一方向の指向性を有する一対のアンテナを、柔軟性を有するケーブルで接続してなることを特徴とする請求項１に記載の無線伝送装置。 The wireless transmission device according to claim 1 , wherein each of the antenna units is formed by connecting a pair of antennas having directivity in one direction with a cable having flexibility. 前記無線通信装置は、無線ＬＡＮにより通信を行うことを特徴とする請求項１又は２に記載の無線伝送装置。 The wireless communications apparatus, the wireless transmission apparatus according to claim 1 or 2, characterized in that communicating by wireless LAN. 架空送電路を構成する送電線鉄塔の上部に設けられる電波の無給電中継装置であって、
２方向に指向性を有する第１〜第３のアンテナユニットを組み合わせてなり、
第１のアンテナユニットは隣接する２つの送電用鉄塔の上部に設けられた無給電中継装置に指向性が向くように設置され、
第２のアンテナユニットは隣接する一方の送電用鉄塔の上部に設けられた無給電中継装置と、当該送電用鉄塔の下部に設けられた前記無線通信装置とに指向性が向くように設置され、
第３のアンテナユニットは隣接する他方の送電用鉄塔の上部に設けられた無給電中継装置と、当該送電用鉄塔の下部に設けられた前記無線通信装置とに指向性が向くように設置されていることを特徴とする電波の無給中継装置。 A non-powered relay device for radio waves provided at the top of a transmission line tower that constitutes an overhead power transmission path,
Combining first to third antenna units having directivity in two directions,
The first antenna unit is installed so that directivity is directed to the parasitic relay device provided at the upper part of two adjacent power transmission towers,
The second antenna unit is installed so that directivity is directed to the parasitic relay device provided at the upper part of one of the adjacent transmission towers and the wireless communication device provided at the lower part of the transmission tower,
The third antenna unit is installed so that directivity is directed to the parasitic relay device provided in the upper part of the other adjacent power transmission tower and the wireless communication device provided in the lower part of the power transmission tower. Telecommunications unpaid relay device characterized by there.
JP2006314449A 2006-11-21 2006-11-21 Wireless transmission equipment, radio-powerless relay equipment Expired - Fee Related JP4749312B2 (en)

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