現(xiàn)場總線過程控制通訊系統(tǒng)（lonworks）.doc
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現(xiàn)場總線過程控制通訊系統(tǒng)（lonworks）,現(xiàn)場總線過程控制通訊系統(tǒng)（lonworks）頁數(shù) 79 字數(shù) 52298摘 要：現(xiàn)場總線（fieldbus）是用于過程自動化和制造自動化最底層的現(xiàn)場設備或現(xiàn)場儀表互聯(lián)的通信網絡，是現(xiàn)場通信網絡與控制系統(tǒng)的集成。隨著現(xiàn)場總線產品性價比的不斷提高，人們正越來越多地采用現(xiàn)場總線對設備進行監(jiān)控。本次設計通過對lonworks的...
內容介紹
此文檔由會員 天緣 發(fā)布
現(xiàn)場總線過程控制通訊系統(tǒng)（LonWorks）
頁數(shù) 79 字數(shù) 52298
摘 要：
現(xiàn)場總線（fieldbus）是用于過程自動化和制造自動化最底層的現(xiàn)場設備或現(xiàn)場儀表互聯(lián)的通信網絡，是現(xiàn)場通信網絡與控制系統(tǒng)的集成。隨著現(xiàn)場總線產品性價比的不斷提高，人們正越來越多地采用現(xiàn)場總線對設備進行監(jiān)控。本次設計通過對LonWorks的應用，使我們對現(xiàn)場總線有個大概的了解。
本次設計是設計一個三層的現(xiàn)場總線模塊,其中把服務器、工程師站和操作員站作為第一層聯(lián)接到以太網,現(xiàn)場總線的設計及總線的通信系統(tǒng)設計作為第二層,現(xiàn)場儀表及裝置為第三層.主要完成的任務是:1、制作實現(xiàn)以太網和Lonworks現(xiàn)場總線相連的 100M/10M協(xié)議轉換器;2、完成Lonworks現(xiàn)場總線與智能儀表相連所需要的RS485模塊;3、實現(xiàn)Lonworks現(xiàn)場總線與PLC裝置相互連接。
關鍵詞：現(xiàn)場總線,串行通信,網絡接口,RS-485
目 錄
摘 要······················································································································(Ⅰ)
Abstract···················································································································(Ⅱ)
第一章 緒 論
1.1 現(xiàn)場總線概述···································································································（1）
1.1.1 現(xiàn)場總線的發(fā)展歷史··················································································（1）
1.1.2 現(xiàn)場總線是新一代的自動化系統(tǒng)································································（2）
1.1.3 現(xiàn)場總線的技術特點··················································································（2）
1.1.4 現(xiàn)場總線的發(fā)展趨勢·················································································（3）
1.2 CAN、Profibus、FF和Hart協(xié)議······································································（3）
1.2.1 CAN（控制器局域網絡）·······································································（3）
1.2.2 PROFIBUS（過程現(xiàn)場總線）·································································（4）
1.2.3 FF（現(xiàn)場總線基金會）現(xiàn)場總線·····························································（5）
1.2.4 HART（可尋址遠程傳感器數(shù)據通路）協(xié)議·················································（6）
1.3 LON總線和Lonworks技術············································································（7）
1.3.1 LonWorks技術的特點················································································（7）
1.3.2 LonTalk協(xié)議····························································································（9）
1.3.3 神經元芯片······························································································（11）
1.3.4 LonWorks的互操作性·············································································（12）
第二章 現(xiàn)場總線控制系統(tǒng)方案的確定
2.1 監(jiān)控級網絡····································································································（13）
2.1.1 工程師站··································································································（13）
2.1.2 操作員站··································································································（13）
2.2 總線級網絡····································································································（16）
2.3 現(xiàn)場級網絡····································································································（16）
第三章 數(shù)據通信基礎
3.1 數(shù)據通信概述·······························································································（17）
3.1.1 數(shù)據通信系統(tǒng)···························································································（17）
3.1.2 數(shù)據通信系統(tǒng)的質量指標········································································（17）
3.2 傳輸代碼······································································································（18）
3.2.1 國際2號碼····························································································（19）
3.2.2 國際5號碼···························································································（19）
3.2.3 國標碼與區(qū)位碼····················································································（19）
3.3 傳輸介質·······································································································（20）
3.3.1 雙絞線電纜···························································································（20）
3.3.2 同軸電纜······························································································（21）
3.3.3 光導纖維·······························································································（22）
3.3.4 無線傳輸介質························································································（24）
3.3.5 電力線···································································································（24）
3.3.6 傳輸介質的選擇····················································································（24）
3.4 傳輸方式·······································································································（25）
3.4.1 基帶傳輸·································································································（25）
3.4.2 數(shù)字信號頻帶傳輸·················································································（27）
3.4.3 模擬信號傳輸·························································································（27）
3.5 串行通信 ······································································································（27）
3.5.1 同步串行通信協(xié)議··················································································（28）
3.5.2 串行通信接口標準··················································································（29）
第四章 TCP/IP協(xié)議
4.1 TCP/IP的網絡分層······················································································（33）
4.1.1 TCP/IP分層模型···················································································（33）
4.1.2 OSI參考模型與TCP/IP參考模型的比較···············································（34）
4.2 網際協(xié)議(IP) ····························································································（35）
4.2.1 IP協(xié)議··································································································（35）
4.2.2 IP編址··································································································（36）
4.2.3 IP子網··································································································（37）
4.2.4 IP路由···································································································（38）
4.3 傳輸層協(xié)議····································································································（39）
4.3.1 TCP協(xié)議··································································································（39）
4.3.2 UDP協(xié)議··································································································（40）
4.4 TCP/IP安全性································································································（41）
4.4.1 傳輸層的安全性····································v·················································（41）
4.4.2 應用層的安全性·······················································································（42）
第五章 典型通訊方法設計
5.1 監(jiān)控級網絡設計·····························································································（44）
5.1.1 WEB服務器······························································································（44）
5.1.2 操作員站·································································································（44）
5.1.3 網絡接口································································································（45）
5.2 總線級網絡設計·····························································································（46）
5.2.1 i.Lon 600 Internet service的介紹····················································（46）
5.2.2 EIA RS-232C接口標準························································v··················（50）
5.3 現(xiàn)場級網絡設計·····························································································（54）
5.3.1 RS-485接口標準·····················································································（54）
5.3.2 RS-232/485轉換器··················································································（59）
5.3.3 現(xiàn)場總線與PLC的連接············································································（63）
5.3.4 實現(xiàn)LonWorks與RS-485連接的適配器···················································(67)
結束語····················································································································（69）
參考文獻··················································································································（70）
致謝························································································································（71）
附錄: 系統(tǒng)總圖 ····································································································（72）
附錄：適配器硬件設計······························································································（73）
參考文獻
1． 王錦標.現(xiàn)場總線控制系統(tǒng).<<微計算機信息>>，1996（6）
2． 趙 海.現(xiàn)場總線控制系統(tǒng)與領域自動化.<<微計算機信息>>，1996（1）
3． 吳 譽,張衛(wèi)東,許曉鳴.以太網與現(xiàn)場總線的互聯(lián)方法.〈〈測控技術〉〉， 2000（1）
4． 李萬周,鄂立福. 現(xiàn)場總線概論選自.〈〈微計算機信息〉〉，1996（6）
5． 劉曙光.現(xiàn)場總線技術的進展與展望.〈〈自動化與儀表〉〉，2000（3）
頁數(shù) 79 字數(shù) 52298
摘 要：
現(xiàn)場總線（fieldbus）是用于過程自動化和制造自動化最底層的現(xiàn)場設備或現(xiàn)場儀表互聯(lián)的通信網絡，是現(xiàn)場通信網絡與控制系統(tǒng)的集成。隨著現(xiàn)場總線產品性價比的不斷提高，人們正越來越多地采用現(xiàn)場總線對設備進行監(jiān)控。本次設計通過對LonWorks的應用，使我們對現(xiàn)場總線有個大概的了解。
本次設計是設計一個三層的現(xiàn)場總線模塊,其中把服務器、工程師站和操作員站作為第一層聯(lián)接到以太網,現(xiàn)場總線的設計及總線的通信系統(tǒng)設計作為第二層,現(xiàn)場儀表及裝置為第三層.主要完成的任務是:1、制作實現(xiàn)以太網和Lonworks現(xiàn)場總線相連的 100M/10M協(xié)議轉換器;2、完成Lonworks現(xiàn)場總線與智能儀表相連所需要的RS485模塊;3、實現(xiàn)Lonworks現(xiàn)場總線與PLC裝置相互連接。
關鍵詞：現(xiàn)場總線,串行通信,網絡接口,RS-485
目 錄
摘 要······················································································································(Ⅰ)
Abstract···················································································································(Ⅱ)
第一章 緒 論
1.1 現(xiàn)場總線概述···································································································（1）
1.1.1 現(xiàn)場總線的發(fā)展歷史··················································································（1）
1.1.2 現(xiàn)場總線是新一代的自動化系統(tǒng)································································（2）
1.1.3 現(xiàn)場總線的技術特點··················································································（2）
1.1.4 現(xiàn)場總線的發(fā)展趨勢·················································································（3）
1.2 CAN、Profibus、FF和Hart協(xié)議······································································（3）
1.2.1 CAN（控制器局域網絡）·······································································（3）
1.2.2 PROFIBUS（過程現(xiàn)場總線）·································································（4）
1.2.3 FF（現(xiàn)場總線基金會）現(xiàn)場總線·····························································（5）
1.2.4 HART（可尋址遠程傳感器數(shù)據通路）協(xié)議·················································（6）
1.3 LON總線和Lonworks技術············································································（7）
1.3.1 LonWorks技術的特點················································································（7）
1.3.2 LonTalk協(xié)議····························································································（9）
1.3.3 神經元芯片······························································································（11）
1.3.4 LonWorks的互操作性·············································································（12）
第二章 現(xiàn)場總線控制系統(tǒng)方案的確定
2.1 監(jiān)控級網絡····································································································（13）
2.1.1 工程師站··································································································（13）
2.1.2 操作員站··································································································（13）
2.2 總線級網絡····································································································（16）
2.3 現(xiàn)場級網絡····································································································（16）
第三章 數(shù)據通信基礎
3.1 數(shù)據通信概述·······························································································（17）
3.1.1 數(shù)據通信系統(tǒng)···························································································（17）
3.1.2 數(shù)據通信系統(tǒng)的質量指標········································································（17）
3.2 傳輸代碼······································································································（18）
3.2.1 國際2號碼····························································································（19）
3.2.2 國際5號碼···························································································（19）
3.2.3 國標碼與區(qū)位碼····················································································（19）
3.3 傳輸介質·······································································································（20）
3.3.1 雙絞線電纜···························································································（20）
3.3.2 同軸電纜······························································································（21）
3.3.3 光導纖維·······························································································（22）
3.3.4 無線傳輸介質························································································（24）
3.3.5 電力線···································································································（24）
3.3.6 傳輸介質的選擇····················································································（24）
3.4 傳輸方式·······································································································（25）
3.4.1 基帶傳輸·································································································（25）
3.4.2 數(shù)字信號頻帶傳輸·················································································（27）
3.4.3 模擬信號傳輸·························································································（27）
3.5 串行通信 ······································································································（27）
3.5.1 同步串行通信協(xié)議··················································································（28）
3.5.2 串行通信接口標準··················································································（29）
第四章 TCP/IP協(xié)議
4.1 TCP/IP的網絡分層······················································································（33）
4.1.1 TCP/IP分層模型···················································································（33）
4.1.2 OSI參考模型與TCP/IP參考模型的比較···············································（34）
4.2 網際協(xié)議(IP) ····························································································（35）
4.2.1 IP協(xié)議··································································································（35）
4.2.2 IP編址··································································································（36）
4.2.3 IP子網··································································································（37）
4.2.4 IP路由···································································································（38）
4.3 傳輸層協(xié)議····································································································（39）
4.3.1 TCP協(xié)議··································································································（39）
4.3.2 UDP協(xié)議··································································································（40）
4.4 TCP/IP安全性································································································（41）
4.4.1 傳輸層的安全性····································v·················································（41）
4.4.2 應用層的安全性·······················································································（42）
第五章 典型通訊方法設計
5.1 監(jiān)控級網絡設計·····························································································（44）
5.1.1 WEB服務器······························································································（44）
5.1.2 操作員站·································································································（44）
5.1.3 網絡接口································································································（45）
5.2 總線級網絡設計·····························································································（46）
5.2.1 i.Lon 600 Internet service的介紹····················································（46）
5.2.2 EIA RS-232C接口標準························································v··················（50）
5.3 現(xiàn)場級網絡設計·····························································································（54）
5.3.1 RS-485接口標準·····················································································（54）
5.3.2 RS-232/485轉換器··················································································（59）
5.3.3 現(xiàn)場總線與PLC的連接············································································（63）
5.3.4 實現(xiàn)LonWorks與RS-485連接的適配器···················································(67)
結束語····················································································································（69）
參考文獻··················································································································（70）
致謝························································································································（71）
附錄: 系統(tǒng)總圖 ····································································································（72）
附錄：適配器硬件設計······························································································（73）
參考文獻
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2． 趙 海.現(xiàn)場總線控制系統(tǒng)與領域自動化.<<微計算機信息>>，1996（1）
3． 吳 譽,張衛(wèi)東,許曉鳴.以太網與現(xiàn)場總線的互聯(lián)方法.〈〈測控技術〉〉， 2000（1）
4． 李萬周,鄂立福. 現(xiàn)場總線概論選自.〈〈微計算機信息〉〉，1996（6）
5． 劉曙光.現(xiàn)場總線技術的進展與展望.〈〈自動化與儀表〉〉，2000（3）
