林致廷Lin, CHih-Ting臺灣大學:電子工程學研究所羅京聘Lo, Jing-PinJing-PinLo2010-07-142018-07-102010-07-142018-07-102008U0001-0210200815245900http://ntur.lib.ntu.edu.tw//handle/246246/189091『居家安全』一直是眾人所追求的目標之一，隨著科技的進步與感測器技術的開發，人們得以隨時監控周遭環境的變化並及時做出應變對策以預防災害的發生。舉例來說，在生活中瓦斯是不可或缺的重要能源之一，調理烹煮或日常用的熱水常以瓦斯為燃燒能源，然疏忽即可能造成一氧化碳中毒或氣爆事件。因此如何能有效地利用氣體感測系統提供即時的感測預警，對於一氧化碳的外洩偵測或過於密閉造成的氧氣銳減給予警報預知，有效的降低意外的發生率即成為一項重要的課題。 一般市售的氣體感測警報系統大多都是採用有線傳輸方式，必須透過傳輸線來進行資料的傳輸，因此在施工、設計及成本上都較為不便與昂貴。為了改善此缺點，本論文研究的方向為結合一氧化碳( CO )、二氧化碳( CO2 )、甲烷( CH4 )複合氣體感測器與無線網路傳輸模組，藉由複合氣體感測器監控環境氣體的變化，並搭配無線傳輸技術，把監控資料傳送至資料中心作數據化的分析處理，一旦監控之環境氣體濃度發生變化，即可發出警報訊息避免災害的發生達到即時監控管理的目的。Home Safety has always been one of the objectives pursued. With the advances in technology and sensor technology, people at any time to monitor changes in the environment around them and make up with contingency measures in a timely manner to prevent disasters from happening. For example, in the life of the gas is one of the important energy and cooking or day-to-day use of hot water. However, that neglect could cause carbon monoxide poisoning or gas explosion incident. Therefore, how we can make good use of the gas sensing system to provide real-time early warning sensor for carbon monoxide leakage detection, or too confined caused by the sharp drop in oxygen to give warning predictable and effective to reduce the accident rate that is an important issue. General commercial gas sensor alarm system is employed most of the cable transmission, through the transmission line into the future implementation of data transmission, so in the construction, design and cost-employed on a more convenient and not expensive. In order to improve the shortcomings of this paper the direction of research for the combination of carbon monoxide (CO), carbon dioxide (CO2), methane (CH4) gas combined with high-selectivity multiple-gas sensing module for wireless sensor network system. By composite gas sensors to monitor environmental changes in the gas and with wireless transmission technology, to monitor the information sent to the Center for the Analysis of the data processing, once the monitoring of environmental changes in the concentration of gas will be issued warning message to avoid disaster Took place to achieve real-time monitoring of management致謝．．．．．．．．．．．．．．．．．．．．．．．2文摘要．．．．．．．．．．．．．．．．．．．．．3文摘要．．．．．．．．．．．．．．．．．．．．．4錄．．．．．．．．．．．．．．．．．．．．．．．5目錄．．．．．．．．．．．．．．．．．．．．．．8目錄．．．．．．．．．．．．．．．．．．．．．．11一章 緒論．．．．．．．．．．．．．．．．．．12.1 研究背景與動機．．．．．．．．．．．．．12.2 研究目的．．．．．．．．．．．．．．．．12二章 文獻回顧．．．．．．．．．．．．．．．．14.1 氣體感測器之概述．．．．．．．．．．．．．．．14.1.1氣體感測器常見的偵測方式．．．．．．．．．．．14.1.1.1金屬氧化物半導體型氣體感測器．．．．．．．．14.1.1.2固態電解質型氣體感測器．．．．．．．．．．．19.1.1.3觸媒燃燒型氣體感測器．．．．．．．．．．．．20.1.1.4場效電晶體型氣體感測器．．．．．．．．．．．21.1.1.5光學型．．．．．．．．．．．．．．．．．．．21.1.1.6 常見各類氣體感測器的原理和主要特性．．．．．22.1.2 各類氣體感測器的優缺點．．．．．．．．．．．．23.2現行有害氣體對人體的影響．．．．．．．．．．．．24.2.1 甲烷 (CH4，Methane) ．．．．．．．．．．．．．24.2.2 一氧化碳 (CO，Carbon Monoxide) ．．．．．．．25.2.3 二氧化碳 (CO2，Carbon Dioxide) ．．．．．．．26.3 無線感測網路之概述．．．．．．．．．．．．．．．28.3.1 感測節點之概述．．．．．．．．．．．．．．．28.3.2 設計的考量．．．．．．．．．．．．．．．．．30.3.3 無線感測網路之應用．．．．．．．．．．．．．31三章 系統架構．．．．．．．．．．．．．．．．33.1 系統概述．．．．．．．．．．．．．．．．．．．33.2 系統特色．．．．．．．．．．．．．．．．．．．33.3 系統設計流程．．．．．．．．．．．．．．．．．34.4 系統架構．．．．．．．．．．．．．．．．．．．36.4.1 氣體感測器的選取．．．．．．．．．．．．．．40.4.2 氣體感測器簡介．．．．．．．．．．．．．．．42.4.3 氣體感測器的使用限制．．．．．．．．．．．．43.4.4 Sensor Board．．．．．．．．．．．．．．．．44.4.5 Simple Node．．．．．．．．．．．．．．．．51.4.6 Super Node．．．．．．．．．．．．．．．．53.5 系統運作流程．．．．．．．．．．．．．．．．55.6 系統軟體．．．．．．．．．．．．．．．．．．57四章 系統實作與測試．．．．．．．．．．．．58.1 實驗測試環境．．．．．．．．．．．．．．．．58.2實驗測試步驟．．．．．．．．．．．．．．．．60.3 各類氣體感測器的實驗測試結果．．．．．．．．62五章 實驗結果與討論．．．．．．．．．．．．．65.1 資料分析．．．．．．．．．．．．．．．．．．65.1.1 量測曲線分析．．．．．．．．．．．．．．．65.1.2 酒精測量．．．．．．．．．．．．．．．．．66.1.3 各種感測器對各種氣體的反應曲線．．．．．．69.1.4 各種氣體感測器對各種氣體的反應與否的統計和比．．．77.2 氣體濃度分析．．．．．．．．．．．．．．．．78.2.1 近似曲線的選取．．．．．．．．．．．．．．78.2.2 各種感測器對各種氣體的近似．．．．．．．．79六章 結論與未來展望．．．．．．．．．．．．85.1 結論．．．．．．．．．．．．．．．．．．．85.2 未來展望．．．．．．．．．．．．．．．．．85考文獻．．．．．．．．．．．．．．．．．．．864125002 bytesapplication/pdfen-US氣體感測器無線傳輸gas sensorswireless transmissionthesishttp://ntur.lib.ntu.edu.tw/bitstream/246246/189091/1/ntu-97-R95943132-1.pdf