本論文將提出一套以電力線載波(Power Line Carrier，PLC)技術架構實現的一套準確時間傳輸與校正系統。PLC可透過現有的電力線，透過載波方式傳輸信號，其優點為不須重新架設網路。此系統可分為兩部分，第一部分可以偵測部分電力線載波時間協定並轉換為現今較常使用的RS-485時間協定。第二部分透過全球定位系統(Global Positioning System，GPS)中的時間資訊，轉換成網路時間協議(Network Time Protocol，NTP)與電力線載波所需要的時間協定，其中NTP可為區網內欲更新電腦時間之電腦提供時間校正，另外電力線載波時間協定則提供母鐘系統一個穩定的輸出。由實驗結果得知，本系統可以有效轉換各種不同的協定，並且成功產生出電力線載波時間協定之波形與NTP系統協定格式。

This thesis shall propose a set of architecture through power line carrier (PLC) technology so as to realize a set of accurate time transmission and correction system.PLC can take full advantage of existing power lines as well as carrier approaches to transmit signals and its strength lies at that there is no need for reconfiguring the network. Moreover this system can be divided into two parts and the first part can detect portion of the PLC time protocol in addition to converting into currently and more commonly used RS-485 time protocol. The 2nd part shall convert them into the time protocols required by network time protocols (NTP) and PLC time protocols through Global Positioning System (GPS) time information. Within it, NTP can be the computer provided time correction of the to-be-updated computer time in area network. Additionally PLC time protocol can provide the master clock system with a stabilized output. And from the empirical findings we can learn that this system can effectively convert various protocols in addition that it can successfully produce waveform of PLC time protocol as well as in protocol format of NTP system.

摘要 i
ABSTRACT ii
誌謝 iii
目錄 iv
圖目錄 vi
表目錄 viii
第一章 緒論 1
1.1 研究背景 1
1.2 研究目的 3
1.3 論文大鋼 5
第二章 架構與方法 6
2.1 Mobaline架構 6
2.2 Mobaline協定波形 7
2.3 Mobaline資料格式 8
2.3.1 Mobaline協定資料分析說明 9
2.4 RS-485格式 10
2.5 實驗方法 11
2.5.1 Mobaline介面轉換模組電路圖 11
2.5.2 軟體解碼 12
2.5.3.1 Mobaline介面轉換模組流程圖與狀態機 13
2.5.3.2 Mobaline介面轉換模組狀態機 14
2.5.4 母鐘模組包含NTP網路時間單元 15
2.5.5.1 Mobaline訊號源產生器流程圖與狀態機 16
2.5.5.2 Mobaline訊號源產生器狀態機 17
2.5.6 GPS格式 18
2.5.8 Mobaline錯誤檢查碼 19
2.5.7 NTP單元 22
2.5.8.1 NTP單元流程圖與狀態機 23
2.5.8.2 NTP單元狀態機 24
2.5.9 Internet轉RS-232模組設定 25
2.5.10 網路時間通訊協定 26
2.5.11 網路監控軟體 27
2.5.12 Wireshark 基本介面資訊介紹 28
2.5.13 Wireshark搭配NTP實際應用 29
2.6 Mobaline介面轉換雛型設計 31
2.6.1 Mobaline介面轉換雛形板 31
雛形板提供電路的驗證，與方便的實作除錯。 31
2.6.2 Mobaline介面轉換版完整功能板 32
2.6.3 Mobaline介面轉換版完整功能(含電源) 33
2.6.4 Mobaline介面轉換版完整功能(可切換不同模式) 34
2.6.4 Mobaline訊號源產生器模組雛形板 35
第三章 結果與討論 36
3.1 Mobaline訊號源產生器驗證 36
3.1.1 Mobaline Input 36
3.1.2轉換Mobaline波形 38
3.2 介面轉換板驗證 40
3.2.1 Mobaline訊號檢測驗證 40
3.2.2 穩定Mobaline訊號 41
3.2.3 Mobaline介面轉換版輸出資料驗證 42
3.3系統實現 43
3.4外殼設計 44
3.4.1衛星時鐘及母鐘源系統外殼 44
3.3.2 Mobaline介面轉換外殼設計 45
3.4 系統成功率 48
3.5 最後成品 49
3.5.1 母鐘模組包含NTP網路時間單元實體 49
3.5.2 介面轉換模組實體 50
第四章 結論與未來展望 51
第五章 參考文獻 52

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