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研究生： 翁瑞恩
Weng, Jui-En
論文名稱： 結合群眾外包的微型PM2.5感測器效能評估研究
A Crowdsourcing-Based Approach for Performance Evaluation of Low-Cost PM2.5 Sensors
指導教授： 陳伶志
Chen, Ling-Jyh
學位類別： 碩士
Master
系所名稱： 資訊工程學系
Department of Computer Science and Information Engineering
論文出版年： 2020
畢業學年度： 108
語文別： 中文
論文頁數： 37
中文關鍵詞： 群眾外包 、懸浮微粒 、微型感測器 、模組內變異性 、變異係數
英文關鍵詞： crowdsourcing, PM2.5, low-cost sensors, Intra-Model Variability, Coefficient of Variation
DOI URL： http://doi.org/10.6345/NTNU202000371
論文種類： 學術論文
相關次數： 點閱：189  下載：13 
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    • 空氣品質逐漸為人們所重視，相較體積大且昂貴的專業儀器，更多人選擇購買便宜的微型感測器，然而也因為低成本的設計，在對抗環境因素干擾的能力可能不如專業儀器來得好，所以各廠商所製作的微型感測器準確度各有差異。工研院也為了因應日漸增加的感測器需求而研發第一款國產PM2.5感測器，目前已經過環保署的實地場域測試，但尚未有大量佈建的實測資料。本研究以群眾外包的方式將大量的微型感測器佈設於全國各地，以取得大量的實測資料，並對這些資料加以分析，分析內容包括：感測器良率、模組內變異性及變異係數。同時提供感測器使用者的使用經驗回饋，以提供未來感測器研發改善方向。採用群眾外包進行感測器效能評估能夠以數量的優勢同時收集不同地點的資料，達到縮短實驗時間的效果，更能有效減少實驗所需的場地成本。

    Air quality is becoming more and more important. Compared to large and expensive professional instruments, more people choose to buy low-cost sensors. However, because of low-cost design, the ability to resist environmental interference may not be as good as professional instruments. ITRI also developed the first domestic PM2.5 sensor in response to the increasing demand for sensors. At present, it has been field evaluated by the Environmental Protection Administration, but there is not a lot of measured data in the field. In this study, a large number of low-cost sensors were deployed throughout the country in a crowdsourcing way to obtain a large amount of measured data in the field and analyze these data. The analysis includes: sensor yield, intra-model variability (IMV), and coefficient of variation (CV). At the same time, we provide feedback on the experience of sensor users to provide future directions for sensor development and improvement. Using crowdsourcing for sensor performance evaluation can collect data from different locations at the same time with the advantage of quantity, achieve the effect of shortening the experiment time, and reduce the site cost required for the experiment.

    第一章 簡介 1 第二章 評估方法與感測器介紹 4 2.1 感測器一致性評估方法 4 2.1.1 模組內變異性(IMV) 4 2.1.2 變異係數(CV) 5 第三章 研究方法 8 3.1 系統設計 8 3.1.1 測站設計 8 3.1.2 資料上傳 8 3.2 群眾外包 9 3.3 資料收集及前處理 10 3.3.1 收集成果 10 3.3.2 資料前處理 14 第四章 研究結果 17 4.1 以不同感測器數量計算IMV 17 4.2 IMV與PM2.5平均值 19 4.3 IMV與測站上線天數 22 4.4 以不同感測器數量計算CV 23 4.5 CV與PM2.5平均值 25 第五章 群眾外包評估 29 5.1 成本 29 5.2 資料收集速度 29 5.3 群眾外包缺點 31 5.4 群眾外包流程改善 31 第六章 結論與未來展望 32 參考文獻 34

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