【正文】 rious ring nets switchboard in the status is equal, after the train regroups it doesn’t affect the data munication with central server and other equipment.理想的布線敷設(shè)方式是每節(jié)車廂只敷設(shè)一到兩根線纜（其中一根做備用），這樣的拓撲就成了總線型。 列車局域網(wǎng)管理系統(tǒng)；LAN Management System。本次選用的專用逆變電源為廣東EAST產(chǎn)品，在青藏鐵路沿線無人值守的通信基站中大量采用，經(jīng)受住了高原、低氣壓、低溫等的考驗。本方案按照工作溫度20℃～60℃，儲藏溫度45℃～70℃的范圍來設(shè)計。 GB5005295《供配電系統(tǒng)設(shè)計規(guī)范》178。 TB102202000 鐵路數(shù)字微波通信工程施工規(guī)范178。 TB1006099 鐵路數(shù)字微波通信工程設(shè)計規(guī)范178。 GB/T5026297 鐵路工程基本術(shù)語標(biāo)準(zhǔn)178。本系統(tǒng)中產(chǎn)品選型均為國際、國內(nèi)通用產(chǎn)品，遵循通用接口標(biāo)準(zhǔn)，為系統(tǒng)升級和擴容奠定了基礎(chǔ)。這對促進西藏和青海的資源開發(fā),加強西藏與內(nèi)地的聯(lián)系, 增進民族團結(jié),維護社會穩(wěn)定,都具有重要意義。QINGDAQO ZERO ELECTRONIC DEVELOPMENT CO., LTD is one of Qingdao biggest weak electricity system integration panies, also is engaged in Housing/ Building intelligence management system , the electronic engineering of Security Technique Protection Project, the puter information system design installment, the software development, the electronic products development, the project and the postsale service to a body prehensive specialized pany. We have engaged in the high tech electronic product development and system integration of the intelligent building in many years and each kind of electronic engineering contracts’ direction experience. Our pany is the hightech enterprise, the quality trustworthy enterprise, and has been entitled qualification certificates as the following: Project Design Level A in System Intelligent Building by Construction Bureau, the First Level of Professional Contract in Intelligent Building by Construction Bureau, and Confirmed Level in Construction of Security Technique Protection Project , and so on. We also passed the authentication of ISO9001 Quality Certificate System in 2003,is only evaluated the Qingdao 2005 year architecture industries the topten specialized contract in the colleague industry and the product quality qualified enterprise by the Qingdao quality engineering supervision bureau.公司集研發(fā)、生產(chǎn)、銷售、工程、售后服務(wù)于一體，下設(shè)總經(jīng)辦、系統(tǒng)集成部、工程事業(yè)部、抄表事業(yè)部、大項目部、人力資源部、財務(wù)部、物流部、客戶服務(wù)中心、機械加工廠等十余個部門。格拉段經(jīng)過海拔4000米以上地段960公里，翻越唐古拉山的鐵路最高點海拔5072米,高原嚴(yán)寒缺氧,不僅對人體生理和機械設(shè)備使用帶來不利影響，而且生態(tài)環(huán)境十分脆弱。公司擁有多年的高科技電子產(chǎn)品的開發(fā)、研制及各種電子工程的承攬施工督導(dǎo)經(jīng)驗，高新技術(shù)企業(yè)、質(zhì)量信得過企業(yè)，并獲得國家建設(shè)部建筑工程智能化專項工程設(shè)計甲級資質(zhì)、建筑智能化工程承包壹級資質(zhì)、公共安全技術(shù)防范工程施工壹級資質(zhì)等資質(zhì)。QINGDAQO ZERO ELECTRONIC DEVELOPMENT CO., LTD has successively carried on several thousand projects in china, has finished the project floor space to surpass 10 million square meters, the profession involves the inhabitant building, the hotel, the posts and telemunications, the public security, the institutions of higher learning, the aviation, the railroad, the harbor affairs, the hospital, the bank, the market, the office building, the industry and mining enterprise and so on.我公司非常感謝和珍惜貴方給予參與進藏列車弱電系統(tǒng)設(shè)計機會，同時懇請貴方對本方案提出意見和建議。In meets the customer function need in the foundation, we collect each wellknown pany and the factory product or the system’s excellence, choice the most suitable software、hardware product and the technology for this project.先進性Advantage各系統(tǒng)采用先進的解決方案，選用先進技術(shù)的產(chǎn)品，并且考慮各系統(tǒng)間的集成和聯(lián)動Each system uses the advanced solution, selects advanced technical product, and considers the integration and the linkage between various systems.成熟性Maturation本方案中對系統(tǒng)結(jié)構(gòu)經(jīng)過反復(fù)論證，對產(chǎn)品選型也經(jīng)過仔細斟酌，系統(tǒng)設(shè)備選擇國內(nèi)或國際的優(yōu)秀品牌，成熟產(chǎn)品，同時也從實際情況出發(fā)，根據(jù)我們豐富的經(jīng)驗，對各系統(tǒng)設(shè)備進行優(yōu)化配置，提高性價比。 TB/T10007－2006鐵路信號設(shè)計規(guī)范178。 TB1000899 鐵路電力設(shè)計規(guī)范 178。 TB1020599 鐵路通信施工規(guī)范178。 GB5005495《低壓配電設(shè)計規(guī)范》；178。 GY/T1061999 有線電視系統(tǒng)技術(shù)規(guī)范178。 Camera selects defending against riots, protection rank IP66 and so on. For example:環(huán)網(wǎng)以太網(wǎng)交換機的工作溫度：20℃～60℃儲存溫度：40℃～85℃Ring net Ethernet switchboard’s operating temperature: 20℃～60℃the preserve temperature: 45℃ ~ 85℃工業(yè)接入AP的工作溫度：20℃～60℃儲存溫度：40℃～65℃The AP turned on industry’s operating temperature: 20℃～60℃the preserve temperature: 40℃ ~ 65℃加固服務(wù)器的工作溫度：20℃～60℃儲存溫度：40℃～60℃The reinforced server’s operating temperature: 20℃～60℃the preserve temperature: 40℃ ~ 60℃加固磁盤陣列的工作溫度：20℃～60℃儲存溫度：40℃～65℃The reinforced floppy disk array ’s operating temperature: 20℃～60℃the preserve temperature: 40℃ ~ 65℃防暴攝像機的工作溫度：20℃～50℃儲存溫度：40℃～60℃The camera ’s operating temperature which defends against riots: 20℃～50℃the preserve temperature: 40℃ ~ 60℃無線網(wǎng)格路由器的工作溫度：20℃～55℃儲存溫度：40℃～80℃Wireless MESH Router ’s operating temperature: 20℃～55℃the preserve temperature: 40℃ ~ 80℃對于電源問題，由于列車已經(jīng)具備雙路不間斷供電條件，因此不間斷電源供電已經(jīng)解決。 列車旅客娛樂系統(tǒng)；Passenger Entertainment System。列車車廂是一輛連一輛的，車廂與車廂之間的連接是活動的，而且車廂有限的空間不適于敷設(shè)過多的線纜，而傳統(tǒng)的以太網(wǎng)是星型拓撲結(jié)構(gòu)的，這就需要從每節(jié)車廂敷設(shè)一根線纜到網(wǎng)絡(luò)中心，這樣靠近網(wǎng)絡(luò)中心的車廂就會有很多線纜，顯然是不現(xiàn)實的。六類綜合布線系統(tǒng)采用美國康普（COMMSCOPE）公司的產(chǎn)品，其中線纜采用六類UTP 1071004ESL型線纜，模塊采用MGS400BH262型模塊，面板采用不銹鋼型英式帶防塵蓋面板M12SP（雙孔）。另外，有包間的車廂中的IC卡門鎖也需要一個RJ45口與管理中心通信。As a result of the train motion characteristic, this plan selects wireless turns on the way. Because present GSM, CMDA and so on wireless turns on system the band width is too small, cannot satisfy the request which the train high belt turns on, therefore we decided uses the satellite munication special line to turn on the way. The turn on band width is 2M (E1) the multiple, this plan temporarily presses turns on the band width to establish provisionally for next line of 2M, front line to the need of the turns on band width ,it is allowed to adjust 2 or above 2 2M band width. Because uses the special line of the satellite to turn on system, the correspondence link for monopolizing like, the correspondence quality and the band width has guaranteed the Qinghai and Tibet train high band width service request.具體設(shè)計Concrete Design在車頂部安裝北京北方波爾科技有限公司的動中通接收天線ISR5000，車廂內(nèi)安裝衛(wèi)星調(diào)制解調(diào)器和TCP加速器，完成數(shù)據(jù)信號的接收和回傳。因此我們考慮采用無線網(wǎng)格技術(shù)（MESH）的無線解決方案。依此類推，數(shù)據(jù)包還可以根據(jù)網(wǎng)絡(luò)的情況，繼續(xù)路由到與之最近的下一個節(jié)點進行傳輸，直到到達最終目的地為止。（1）Fast deployment and easy to install. Installs the Mesh node extremely simply, takes out the equipment from the packing box, and meets the power source to be good. Because the installment is enormously simplified, the user may be very easy to increase the new node to expand the cover scope and the network capacity of the wireless network. In the wireless M