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Computer Control and Management of Water Resources for Agriculture

CHAPTER ONE INTRODUCTION第10-20页
    1.1 Overview第10-11页
    1.2 Computer Control Systems Concept第11-14页
        1.2.1 Automatic Control System第11-14页
    1.3 Control System Techniques第14-15页
        1.3.1 Open Loop Systems第14页
        1.3.2 Closed Loop/Feedback System第14-15页
    1.4 Growth and Motivation for Control Systems第15-17页
    1.5 Case Study Description第17-19页
        1.5.1 Background Information of Wuan Irrigation District第17-18页
            1.5.1.1 Geographical Location第17页
            1.5.1.2 Agricultural System第17页
            1.5.1.3 Irrigation System and Water Supply Mode第17-18页
        1.5.2 Problems Accounted with the Current System第18-19页
            1.5.2.1 Aging Systems第18页
            1.5.2.2 Changes in Demand Patterns第18页
            1.5.2.3 Decrease in Farm Yield第18-19页
            1.5.2.4 Increase Costs of Operation and Maintenance第19页
    1.6 Thesis objectives and Methodology第19-20页
        1.6.1 Research Objectives第19页
        1.6.2 Methodology第19-20页
CHAPTER TWO COMPUTER CONTROLLED IRRIGATION SYSTEM CONCEPT第20-38页
    2.1 Computer-Based Irrigation Control Systems第20页
    2.2 Automatic Irrigation System Components第20-23页
        2.2.1 Hardware Component第21-23页
            2.2.1.1 Sensors第21-22页
            2.2.1.2 A/D Interface第22页
            2.2.1.3 Computer system第22-23页
            2.2.1.4 Actuators第23页
        2.2.2 Software Component第23页
    2.3 Data Communication and Network System第23-32页
        2.3.1 Analog and Digital Data communication第24-25页
        2.3.2 Communications Channels第25-27页
            2.3.2.1 Twisted Wire第25页
            2.3.2.2 Coaxial Cable第25-26页
            2.3.2.3 Fiber Optics第26页
            2.3.2.4 Wireless Transmission第26页
            2.3.2.5 Microwave第26-27页
            2.3.2.6 Mobile Data Network第27页
        2.3.3 Communications Processors第27-28页
        2.3.4 Communication Networks第28-32页
            2.3.4.1 Network Topologies第29-30页
                2.3.4.1.1 The Star Network第29页
                2.3.4.1.2 The Bus Network第29页
                2.3.4.1.3 The Ring Network第29-30页
            2.3.4.2 Local Networks第30-31页
                2.3.4.2.1 Private Branch Exchanges第30页
                2.3.4.2.2 Local Area Networks第30-31页
            2.3.4.3 Wide Area Networks第31-32页
    2.4 Control System Levels第32-34页
        2.4.1 Independent Control第33页
        2.4.2 Centralized Control第33页
        2.4.3 Distributed Control第33-34页
    2.5 Canal Networks Control Schemes第34-38页
        2.5.1 Upstream Control第34-35页
        2.5.2 Dowmtream Control第35-36页
        2.5.3 Controlled Volume Control第36页
        2.5.4 Dynamic Regulation第36页
        2.5.5 Flow Rate Control第36-38页
CHAPTER THREE OPTIMIZATION OF WATER RESOURCES第38-46页
    3.1 Irrigation Water Dispatch Optimization Models第38-41页
        3.1.1 Reservoir第39-40页
        3.1.2 Primping Stations第40-41页
            3.1.2.1 Hydraulic Network Models第40页
            3.1.2.2 Demand Forecast Models第40-41页
            3.1.2.3 Optimization Models第41页
    3.2 Optimizing Irrigation Water for Wuan Irrigation District第41-46页
        3.2.1 Canal system sub-areas division第42页
        3.2.2 Canal Simulation Model第42-43页
        3.2.3 Mathematical Model第43页
        3.2.4 Solving Procedure第43-46页
CHAPTER FOUR COMPUTER CONTROL SYSTEM DESIGN第46-61页
    4.1 System Architecture第46-51页
        4.1.1 Data collection and transmission第47-49页
        4.1.2 Data Management第49-50页
        4.1.3 Controlling operation第50-51页
    4.2 System Requirements第51-55页
        4.2.1 Hardware Platform第51-52页
        4.2.2 Software Platform第52-55页
    4.3 Database Model第55-61页
        4.3.1 Entity-Relationship Model第55-56页
        4.3.2 Creating Database and Database Tables第56-59页
        4.3.3 Control System Database Access第59-60页
        4.3.4 Data Access System Configuration第60-61页
CHAPTER FIVE IMPLEMENTATION OF COMPUTER CONTROL SYSTEM FOR THE WATER SUPPLY OF WUAN IRRIGATION DISTRICT第61-64页
    5.1 Data collection System第61页
    5.2 Networking System第61页
    5.3 Controlling System第61-62页
    5.4 Software System第62-63页
    5.5 System Security Implementation第63-64页
CHAPTER SIX SUMMARY AND CONCLUSION第64-12页
    6.1 Summary第64-65页
    6.2 Conclusions and Future of Control System Technology第65-66页
    Reference第66-12页
LIST OF FIGURES第12页
    Fig. 1.1 Basic Components of the Control System第12-14页
    Fig. 1.2 Basic Open Loop System第14-15页
    Fig. 1.3 Basic Closed Loop System第15-42页
    Fig. 3.1 Wuan Irrigation District Canal Structure第42-43页
    Fig. 3.2 Wuan Irrigation District Canal Simulation Model第43-44页
    Fig. 3.3 Structure of Model Solving Procedure第44-47页
    Fig. 4.1 Wuan Irrigation District Control System Architecture第47-49页
    Fig. 4.2 Data Collection and Transmission第49-50页
    Fig. 4.3 Data Reception, Management, Monitoring, and Control第50-56页
    Fig. 4.4 E/R Diagram of Computer Controlled System第56-59页
    Fig. 4.5 Client/Server and Bwwser/Server System Architecture第59-60页
    Fig. 4.6 OLE DB Data Source Access第60-12页
LIST OF TABLES第12-58页
    Table 1.1 Measurable Variables in Greenhouse Control第12-27页
    Table 2.1 Speeds and Costs of Communications Transmission Media第27-53页
    Table 4.1 Features of Some PC Operating Systems第53-57页
    Table 4.2 Canals Table第57页
    Table 4.3 Stations Table第57页
    Table 4.4 Weather Table第57-58页
    Table 4.5 Pumps Table第58页
    Table 4.6 Gates Table第58页
LIST OF LISTINGS第58-68页
    Listings 4.1 SQL Statement for Table Creation第58-68页

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