網際網路為基礎之遠端微控制器系統

謝佳盛★ 林惠民★★

國立中山大學電機工程研究所

摘 要

隨著科技的日新月異，擴充近端控制配合以普遍性高的通訊媒介，達成遠端通訊的功能已成為世界性討論的議題。硬體設計上,本論文採用T-RMC(Twin-Remote Micro controller)系統來節約成本，此前端處理器即是模擬可程式邏輯控制器(PLC)，以達成資料截取和資料傳輸等功能。它具有以下之特性：低價成本、高度穩定性、具遠端傳輸及易於擴充。目前此系統為單一點對單一點來進行通訊。期望未來此系統可發展為點對多點或多點對多點的控制系統。

本論文的另一主題即在於發展一套適合網際網路上使用的遠端監控圖形人機界面(Graphical User Interface)。另外，本論文提出CGI網路服務程式以及將圖形化程式(Graphic programming)嵌進網頁中的技術。使得使用者可容易使用這套具親和力的圖形人機界面。

在本論文最後，將列舉兩個應用程式實例證明本T-RMC系統可成功運作，並透過區域網路或網際網路實現遠端監控。一個為遠端多通道類比/數位信號截取系統，另一個為遠端時間排程系統。系統可管理與控制家電設備，以達成節約能源為目標。

★作者 ★★指導教授

An Internet and Web Based Remote Micro-Controller System

Jia-Sheng Hsieh★ Whei-Min Lin★★

Institute of Electrical Engineering
National Sun Yat-Sen University

Abstract


With the development of new technologies, extending the techniques from local control to remote control with the public communication media becomes worldwide issues. In the hardware aspect, this research designed the T-RMC (Twin-Remote Micro controller) system to reduce hardware cost. This Fore-Processor can simulate Programming Logical Controller (PLC), to accomplish function of data acquisition and data transmission. The design features low cost、 high stability, with remote data transmission, and easy expansion. The system functions are now designed with one point to one point communication, so in the future work, this system will be expanded to become one point to multi-point or multi-point to multi-point control system.

Anther topic of this thesis is to develop a GUI (Graphical User Interface) suitable for Internet based supervisory control systems. In addition, the thesis presents the use of some CGI (Common Gateway Interface) programs, and the technique of embedded G programming (Graphic programming) into the homepage. The operator can operate the system easily by using friendly GUI.

Examples of two applications were used to show that the T-RMC system was accomplished successfully. The experimental results have demonstrated the capabilities of the supervisory control system through LAN or Internet. One is the Remote Multi-channel Analog/Digital Signal Acquisition System, and the other is the Internet-Based Remote Scheduling Agent System. These systems can manage and control the conventional household or industrial electric equipment, to achieve the goal of energy conservation.

★Author ★★Advisor

摘要………………………………………………………………I
英文摘要…………………………………………………………II
目錄………………………………………………………………IV
圖目錄……………………………………………………………VII
表目錄……………………………………………………………IX

第一章 緒論………………………………………………………….1

1.1研究動機與目的…………………………………………….1
1.2文獻回顧與國內外研究概況…………….…………….…….3
1.3研究方向與方法…………………………………………….4
1.4系統簡介…………………………………………..………….6
1.5本論文各章節內容……………………………………………7

第二章 遠端控制系統架構………….………………………….8

2.1硬體系統架構………………………………………..…8
2.2軟體系統架構……………………………………………….10
2.3系統需求分析…………………………..……………………..11
2.4系統建構工作項目與說明…………….………………………13

第三章T-RMC硬體線路設計及程式流程………..……………….15


3.1 T-RMC硬體區塊說明………………………………………15
3.1.1 T-RMC系統設計與89C51微控制器……………16
3.1.2串列埠通訊的介面的設計……………………….…18
3.1.2.1串列傳輸說明…………………………...18
3.1.2.2串列通訊的硬體接線…………………...21
3.1.3 8255輸入/輸出外部擴充電路…………………...23
3.1.4 AD574類比/數位轉換介面電路…………………25
3.1.5類比多通道開關介面電路………………………..27
3.1.5.1 CD4051類比多通道開關原理說明….…27
3.1.5.2 類比多通道開關硬體接線………………..29
3.1.6電源供應器………………………………………30
3.2程式流程………………………………………………………32

第四章 網路程式應用設計與建置…………………………………….38

4.1 T-RMC通訊方式…………………………………………….38
4.2網路應用程式………………………………………………...41
4.2.1 CGI的概念說明……………………………………….42
4.2.2 CGI的運作模式與環境變數………………………….42
4.2.3建構基本網路CGI程式………………………….…..45
4.3建構VI的人機界面於HTML文件……………………….48
4.3.1靜態式影像傳送…………………………………………50
4-3.2動態式影像傳送…………………………………………51

第五章 系統整合成果.……………………………………………….53


5.1現場連線監控程式測試…………………………………………53
5.1 1數位輸入輸出操控命令資料鏈測試………………….…53
5.1.2時間排程操控命令資料鏈測試………………………….56
5.1.3多通道類比/數位資料擷取測試…………………………57
5.2遠端監控程式測試………………………………………………59
5.2.1使用者存取權之審核測試…..…………………………...59
5.2.2遠端時間排程操控命令資料鏈測試…………………….60
5.2.3遠端多通道類比/數位資料擷取測試……………………62

5.3硬體控制介面實體圖………….…………………………………….65

第六章 結論與未來研究方向…………………………………………67

參考文獻………………………………………………………………70
附錄A…………………………………………………………………73
附錄B……………………………………………………………88

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