臺灣博碩士論文加值系統

在本論文中，提出以多數決投票機制去管理焦電型紅外線感測器(PIR)，降低感測器的錯誤感測機率，並且提升整體感測機率，強化外部感測電路的可靠度。建構多群組的感測器群組可延長整體感測範圍，並且提升具感測器中心較遠距離而降低的感測機率，利用外部感測電路的感測訊號觸發嵌入式監視系統，多個感測器接受到入侵者的感測觸發後的感測訊號會進行多數決投票，當感測訊號多於半數時，嵌入式監視系統會開啟USB web camera進行擷取影像，擷取影像後會使用網頁伺服器上傳影像至網頁，使用者可透過網路連結IP位址進行即時監視。另外針對焦電型紅外線感測器的特性進行研究，根據焦電型紅外線感射器的感測盲點所設計以超音波感測器進行感測特性的互補，建立一個複合式感測器的感測網路，得到更完整且更可靠的外部感測電路。

In this paper our design integrates multiple sensors to construct a sensor group and count their states by using a majority voting mechanism (MVM). This method is helpful in decreasing the miss rate of a surveillance system because the majority compensates for sensing errors and thus enhances the reliability of a surveillance system in the monitoring area. To cover a large sensing area, we use multiple sensor groups which have a majority voting mechanism and are able to help each other. If over half the sensors in a sensor group sense a temperature change, the majority voting circuit sends a trigger signal to the surveillance system. The result of the statistics decides whether the embedded surveillance system is to be triggered which then records the images of an intruder in an efficient way. Our design uploads images or videos to Web pages in real time and allows the user to monitor the area through the Internet. We also research into the characteristics of PIR, and to design the ultrasonic sensors to complement the PIR sensors. We construct a more complete sensor network by complex sensor groups, and more reliable external sensor circuits.

目錄

中文摘要……………………………………………….…………...…...i
英文摘要……………………………………………………...……...…ii
誌謝…………………………………………………………...…...…...iii
目錄…………………………………………………...…………...…...iv
表目錄……………………………………………….……………...….vi
圖目錄………………………………………………………...…...…..vii
一、緒 論
1.1 研究動機與目的 1
1.2 相關研究綜覽 2
1.3 建構嵌入式影像監視系統之軟硬體簡介 5
1.4 多數決投票機制提升焦電型紅外線感測器的感測穩定度 5
1.5 多數決投票機制提升多群組焦電型紅外線感測器感測機率 與延長感測範圍 5
1.6 以超音波感測器與焦電型紅外線構成複合式感測網路 6
1.7 論文架構 6
二、建構嵌入式影像監視系統之軟硬體簡介
2.1 嵌入式系統簡介 7
2.2 嵌入式監視系統核心設定 9
2.3 嵌入式串流軟體移植 21
三、多數決投票機制提升焦電型紅外線感測器的感測穩定度
3.1 系統架構 25
3.2 多數決投票機制的數學模型 26
3.3 系統軟硬體架構 29
3.4 實作成果 39
四、多數決投票機制提升多群組焦電型紅外線感測器感測機率 與延長感測範圍
4.1 多群組多數決投票機制 42
4.2 系統架構 44
4.3 實作成果 49
五、以超音波感測器與焦電型紅外線構成複合式感測網路
5.1 系統架構 55
5.2 複合式感測網路的互補性與實驗設置 59
5.3 超音波多數決投票機制 61
5.4 超音波編碼機制 62
5.5 實作成果 63
六、結論與未來發展
6.1 多數決投票機制提升焦電型紅外線感測器的感測穩定度 結論 71
6.2 多數決投票機制提升多群組焦電型紅外線感測器感測機 率與延長感測範圍 71
6.3 以超音波感測器與焦電型紅外線構成複合式感測網路 71
6.4 實驗遭遇之困難 71
6.5 未來研究方向 73

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