三菱電線工業時報 第 105 号 2008 年 10 月 1 High-speed disaster prevention radio information system R-LCX50-4SL-75 LANIEEE b/g R-LCX50-4SL D 2 1

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1 1 GHz GHz 帯長距離漏洩同軸ケーブルを用いた高速防災無線情報システムの研究開発 High Speed Communication System for Emergencies Using Long-distance GHz Leaky Coaxial Cables 長野県工業技術総合センター 国立大学法人信州大学 株式会社サーキットデザイン 加賀電子株式会社 菱星通信システム株式会社ネットワーク技術部 菱星通信システム株式会社ネットワーク技術部 H. Takagi K. Wasaki Y. Koike Y. Kuroda T. Nishikawa N. Moriyama T. Kaneko H. Okuzono S. Watanabe 地下災害やトンネル災害において, 災害現場と地上基地との間で双方向の高速 大容量通信が可能な GHz 帯の電波が伝送できる長距離漏洩同軸ケーブル (LCX) の研究開発を行っている 同時に, この同軸ケーブルを利用したロボット遠隔制御システム, テレメータシステム, 映像伝送システムの研究開発を行っている 開空間および, 建物の陰にケーブルを敷設して実環境に近い場所でのアプリケーション通信実験を行い, それぞれの場所で動作を確認した キーワード 漏洩同軸ケーブル,LCX,GHz 帯, 無線 LAN, 高速 大容量通信 Long-distance leaky coaxial cables (LCX) that can transmit radio waves of the GHz band used for interactive high-speed and large capacity communication is researched and developed for underground and tunnel disasters. At the same time, the robot remote control system, the telemeter system, and the image transmission system are researched and developed using leaky coaxial cables. The application communication experiment was conducted in an open space and in an area shaded by a building where the environment was close to the actual site. Operation in each place was confirmed. Key wordsleaky Coaxial Cable, LCX, GHz Band, Wireless LAN, High-speed and Large Capacity Communication GHz 2 1 Mbps / 6

2 三菱電線工業時報 第 105 号 2008 年 10 月 1 High-speed disaster prevention radio information system R-LCX50-4SL-75 LANIEEE b/g R-LCX50-4SL D Leaky coaxial cable structure 1 R-LCX50-4SL-75 R-LCX50-4SL-75 structure and dimensions 4.7 mm 12.4 mm 15.5 mm 190 g/m 2 R-LCX50-4SL-75 R-LCX50-4SL-75 electric characteristic db 2.4 GHz db 2.4 GHz 11.9 db / 100 m VSWR GHz 1.5 >10 MHz 50 5 W 3 LAN WB30021 Wireless LAN access point unit WB WB30021 WB30021 specifications GHz OFDM / DSSS 1.5 mw / MHz 1 13 ch CSMA / CA ARIB STD-T b / g / u WEP / AES mm 30 W 1.8 kg 3.3 WB30021 R-LCX50-4SL-75 LAN LAN 4 VoIP PDA m 300 m m 300 m linear LCX cable in open space, Signal strength distribution map 3.2 LAN WB30021 R-LCX50-4SL-75 LAN LAN LAN WB30021 WB VoIP N900 il/wip5000 /MC50 VoIP terminal (N900 il/wip5000 /MC50 )

3 GHz 4 VoIP transmission test results N900 il VoIP 150 m WIP5000 VoIP 200 m MC50 PDASoftPhone 290 m m 300 m Home Plug AV OFDM 2 MHz 30 MHz 6 Fukui works test yard m 0 65 m 60 cm m 210 cm 3.1 LAN Base bridge block diagram 9 Repeater block diagram 10 Repeater system test configuration m 150 m curved LCX cable between buildings, Signal strength distribution map 8

4 三菱電線工業時報 第 105 号 2008 年 10 月 LAN Remote control robot m LAN 200 m Telemetry cordless handset GHz 1.2 GHz 300 m / Remote control and decode software screen 14 Telemetry information software screen 9

5 GHz LAN LAN Thermal infrared imaging camera decoder screen (in tunnel) 7 15 LAN Wireless LAN movie encoder m 200 m Video camera decoder screen (open space) 10

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