臺灣博碩士論文加值系統

本論文利用電力線載波通訊技術實踐一套電纜斷裂檢測系統,透過傳輸檢測訊號進行電纜斷裂檢測。當系統檢測出電纜斷裂時,會發出警報向系統進行通知。對於電力線載波通訊之傳輸干擾因素:環境干擾、傳輸遺漏、以及系統當機,提出一套解決方法。本論文以多個分散在不同區段的檢測節點,設計一套可以快速進行的檢測方法,將干擾因素的影響降低,以降低檢測系統的誤報率。本論文提出一種遞補式動態代理演算法,減少每次進行檢測所參與之節點,透過降低傳輸次數來降低干擾所造成的影響。本論文所提出之演算法在節點訊息遺漏時能由上下位階進行遞補訊號之能力,並且本系統能藉由不同的配置方法產生具有單群組、雙群組以及多群組之檢測功能。實驗結果證實此演算法具良好交握檢測能力及受到不同干擾時能即時遞補訊息,以防止因節點故障而誤認為是電纜斷路之情況發生。

In this study , power line carrier communication technology was used to establish a system that detects cable breakage by transmitting detection signals. When the system detects cable breakage,it sounds an alarm to notify the system. A solution was proposed to
overcome factors that cause transmission interference for power line carrier communication,such as environmental interference,transmission omission,and system crash. In this study,a rapid detection method was designed for multiple detection nodes
distributed in different sections to minimize the influence of the interfering factors so as to reduce the false alarm rate of the detection system. We also proposed a supplementary dynamic agent algorithm,which reduces the number of nodes involved in each detection
operation and alleviates the influence of interference by decreasing the number of transmissions. When information omission occurs at a node,this technology allows signals to be supplemented from a higher or lower tier. This system is capable of detecting
a single group,two groups,or multiple groups by using different configuration methods. Test results verified that this algorithm has an excellent handshake detection ability and is able to supplement real-time information under different interferences to avoid false alarm of cable breakage due to node failure.

中文摘要..................................I
英文摘要.................................II
誌謝....................................III
目錄.....................................IV
表目錄..................................VII
圖目錄.................................VIII
第一章 緒論...............................1
1.1 研究背景..............................1
1.2 研究動機與目的........................2
1.3 文獻回顧..............................3
1.4 論文大綱..............................6
第二章 電纜斷裂檢測方法...................7
2.1 電力線通訊原理........................7
2.2 通訊調變技術..........................7
2.2.1 頻率調變技術........................8
2.3 電纜斷裂檢測方法.....................10
2.3.1 節點檢測模式.......................11
2.3.2 快速檢測模式.......................12
2.3.3 代理傳輸模式.......................13
第三章 系統架構與設計....................18
3.1 系統架構.............................18
3.2 電路設計.............................19
3.2.1 電源輸入單元.......................19
3.2.2 系統狀態顯示單元...................20
3.2.3 系統配置單元.......................21
3.2.4 電力線通訊單元.....................25
3.2.5 告警輸出單元.......................26
3.2.6 中央運算單元.......................26
3.3 LAYOUT圖.............................28
3.4 外殼結構圖...........................30
3.4.1 3D外觀圖...........................31
3.5 軟體架構.............................32
3.5.1 API設計............................33
3.6 系統運作流程.........................33
3.7 通訊協定.............................35
3.7.1 通訊封包...........................35
3.7.2 檢測封包驗證.......................37
3.7.3 CRC-16運算方法.....................38
第四章 實驗結果..........................40
4.1 實驗步驟.............................40
4.1.1 系統穩定度實驗.....................40
4.1.2 系統告警時間量測實驗...............46
4.2 實驗結果.............................46
4.3 結果討論.............................48
第五章 結論與展望........................49
5.1 結論.................................49
5.2 未來展望.............................49
參考文獻.................................50
附件一 電力線電纜斷裂通報系統設計........52
附件二 API設計...........................67

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