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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/3261


    Title: 無人機房資料蒐集與傳輸系統研究與開發 -以環保署空品站為例;A Study of Data Acquisition and Transmission System for Air Quality Mornitoring Station
    Authors: 邱大福;Ta-Fu Chiu
    Contributors: 環境工程研究所碩士在職專班
    Keywords: 傳輸系統;可程式控制器;自動控制;空氣品質監測;資料蒐集;無人機房;監測;automaticallying control;air quality monitoring;PLC;transmission system;data acquisition;Air monitoring
    Date: 2005-07-09
    Issue Date: 2009-09-21 12:13:41 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: 本研究主要內容包括建立新的無人機房資料蒐集及傳輸系統,以TCP/IP為架構基礎,ADSL GSN VPN網路為主要傳輸方式,並建立GPRS第二傳輸路徑,開發「自動傳輸路徑偵測系統」在最初資料取得的PLC內,可保持中心端不受有線ADSL傳遞網路不通的影響,可持續接收最新的監測資料。 在操作系統的人機介面上,以Web-Based為設計,使用者可以輕易使用,親和力高,Client端也不需安裝其他程式,只要有網頁瀏覽器即可以操作,全系統開發的程式包括三部份前端資料蒐集器SoftPLC、測站端伺服器及中心端中介伺服器。 全系統設計考量點有四:(1) 正確性(2) 即時性(時間性)(3) 穩定性(4) 安全性。本研究設計開發後,針對全系統蒐集結果與最後傳輸結果分析其資料取得(蒐集)率及傳輸可靠度做一分析。結果平均資料取得率為100%(扣除自動更新程式重開機時段),而傳輸可靠度亦是100%,所應用開發的技術已可以克服網路封包傳遞遺失的問題。 新系統的效益評估資訊系統的成本效益的量測方法較為複雜,更重要的是量化資料收集亦不易,要對新系統的成本效益立即做出精細的量化評估確有困難存在。本研究僅針對新系統SoftPLC DAS部分效益做初步列舉,詳細的量化效益測定希望可以在運轉一段時間後(如一年),取得更多的資料及精算後的維運成本,做進一步的分析研究。 This study is to develop a data acquisition and transmission system(DAS) for Air Quality Mornitoring Station , which regards TCP/IP as the structure founda- tion. The ADSL GSN VPN network is main transmission means, and the GPRS is the second transmission route. The second transmission route designed in PLC side can keep the data transmitting smoothly and away from the influence of the ADSL disconnection. The man-machine interface is based on Web-Based design, the user can use easily and the Client side does not need to install other applications, so long as there are webpage browsers and can be operated promptly. The whole system can be draw out as three sections,including SoftPLC side、Station Server side and Middle Server side. The whole system is designed to consider four: (1)The exactness (2 ) is instant (timeliness ) (3)The stability (4)The security. Research these after developing, the data obtaining rate is 100% (deduct the automatic renewal procedure and start the machine in period again), and it is also 100% in data package delivery. That means that the technology of application and development can already overcome the network package trans- mitting and the question lost. It is complicated to compare that the quantity of assessing cost-effective of the new system with the original system, due to the difficulty of information sources for original system. Hence this study enumerates tentatively benefits to new system of SoftPLC DAS, comparatively benefit would be approved in some practical circumstances in the future.
    Appears in Collections:[環境工程研究所碩士在職專班] 博碩士論文

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