臺灣博碩士論文加值系統

乙太網路供電 (Power Over Ethernet, PoE）是將電源整合到標準網路設備中的一種技術，PoE技術可以使用同一條乙太網路電纜同時傳輸資料和提供電源，PoE的另一項優勢是網路交換機中的供電端設備若連接UPS不斷電系統時，採用PoE的受電端裝置也可以使用此UPS不斷電功能。本論文研究乙太網路供電技術，依據IEEE 802.3af 與IEEE 802.3at增強型乙太網路供電 (Power Over Ethernet Plus, PoE+) 標準，設計並實現一組符合此規範之乙太網路供電系統，其中包括供電端與受電端之電路設計與整合，同時建構一虛擬區域網路系統以遠端控制IP攝影機之方式驗證所實現之PoE系統功能，測試結果顯示所實現之增強型乙太網路供電系統具備在同一條乙太網路線進行網路連接與供電之功能，同時也符合IEEE 802.3at之規格需求。

The power over Ethernet (PoE) technology support a system can safely transmit electrical power along with data on Ethernet cabling. The PoE system has another advantage of uninterruptible power supply (UPS) for the power device (PD), if the power source equipment (PSE) uses a UPS system to supply the electricity. In this thesis, the PoE technology has been investigated. Based on the IEEE 802.3af-2003 PoE standard and IEEE 802.3at (Power over Ethernet enhancement, PoE+) standard, we design and implement a PoE system that includes PSE and PD. We also build up a remote controlled IP camera system connected with Ethernet cabling to verify the function of proposed PoE+ system. The testing results have shown that the implemented PoE+ system can safely transmit electrical power along with data on Ethernet cabling and meet the requirement of IEEE 802.3at standard.

第一章 前言 1
1.1 緒論與研究動機 1
1.2 研究內容與流程 3
1.3 論文架構 4
第二章 基礎技術 5
2.1 乙太網路供電系統基本描述 5
2.2 IEEE 802.3af 乙太網路供電系統架構 8
2.3 IEEE 802.3at增強型乙太網路供電系統架構 10
2.3.1 10BASE-T/100BASE-TX的PoE+ 架構 11
2.3.2 1000BASE-T 的 PoE+ 架構 12
2.4 乙太網路供電傳輸媒介 15
2.5 乙太網路供電相關參數及特性 17
第三章 交換式電源供應器簡介 25
3.1 返馳式轉換器 25
3.1.1 理論基礎 25
3.1.2 硬體設計 31
3.2 升壓式轉換器 37
3.2.1 理論基礎 37
3.2.2 硬體設計 42
第四章 系統設計與實現 47
4.1 網路與供電控制模組 47
4.2 供電端設備模組 50
4.3 受電端裝置控制模組 53
第五章 PoE+ 系統實現與功能驗證 61
5.1 系統實現 61
5.2 功能驗證 67
第六章 結論 74
參考文獻 75

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