基于wsn的现代大棚.doc
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基于wsn的现代大棚,摘要我国是历史悠久的农业大国，基本国情决定了“三农”问题成为中国经济社会发展过程中的瓶颈。农业生产效率问题就成为当前现代农业建设中的一个重要课题。同时，大棚种植作为现代农业中一个非常重要的形式在我国发展飞速，目前我国已拥有世界上最大的蔬菜保护生产面积。有效提高大棚种植生产效率保证低投入高产出，必须依赖于先进的农业自动化...
内容介绍
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摘 要
我国是历史悠久的农业大国，基本国情决定了“三农”问题成为中国经济社会发展过程中的瓶颈。农业生产效率问题就成为当前现代农业建设中的一个重要课题。同时，大棚种植作为现代农业中一个非常重要的形式在我国发展飞速，目前我国已拥有世界上最大的蔬菜保护生产面积。有效提高大棚种植生产效率保证低投入高产出，必须依赖于先进的农业自动化技术和设备，对大棚内的种植环境进行实时采集和控制，确保作物的最佳生长环境。目前市场上应用较为广泛的基于PLC、单片机或现场总线技术的有线控制系统，虽然技术成熟，但在布线、成本、生产规模可扩展性等各方面存在局限。
本论文以上述系统的局限性为着眼点，探索基于无线通信技术的监控方案；同时抛弃西方发达国家基于GIS、GPS技术的大田精确种植体系方案，探索构建另外一种基于ZigBee技术无线传感器网络技术的智能控制系统。该系统利用无线传感器网络实现农情信息的实时采集，利用ZigBee技术实现组网和数据通信，由路由节点根据目标地址实现最优路径的选择，将农情信息发送到PC虚拟控制终端，并参照专家数据库的参数计算控制命令，发送到对应的大棚基站对外围电气设备进行控制，从而最终实现系统功能。
论文对基于无线传感器网络的智能大棚控制系统作了详细的阐述。该系统由分布在大棚内的传感器节点（终端设备）、大棚基站（路由器节点）和PC机终端节点（网络协调器）三部分组成。传感器节点负责温度、湿度、光照度和CO2浓度等农情信息的采集，大棚基站负责农情信息的汇总转发以及大棚内电气设备的控制，PC机终端负责信息的汇总和与PC虚拟控制平台的通信。
自适应组网和数据通信路由算法的选择上，论文分析了该系统基于ZigBee网络节点树形拓扑的自适应路由选择算法。该算法在分层路由LEACH算法的基础上，分析了该算法的缺陷并进行了改进。通过NS2仿真结果表明，改进后的算法网络总体能耗平稳，并有所降低，网络生命周期大大提高。
经系统测试，本文所设计的架构合理，功能电路实现较好，系统工作稳定，性能优良，成本低廉，较好地达到了预期的各项指标，具有一定的推广价值。
关键词 智能控制；精确种植；无线传感器网络；ZigBee技术；CC2430；
Abstract
Since China is a great agricultural country with long history, the basic national condition dicides that issues concerning agriculture, countryside and farmers to become a serious problem in economic and social development process. Agricultural production efficiency will become an important subject in modern agricultural development. At the same time, as a important form of farming, greenhouse develops rapitly in our country, and up to now, we have the world's largest greenhouse area. Growth in production efficiency depends on advanced agricultural equipment and automatic technology, which help collecting real-time imformation and controlling to keep a best growing environment for the plants in the greenhouse. Extensive application based on PLC, MCU or field bus technique in the market which are all wired control system, have limitations in wiring or price or scalability.
Having the disadvantages of the systems above in mind, another control system based on wireless communication is brought out without considering of the precision farming method using GIS and GPS in western countries, which using WSN based on ZigBee technology. This control system uses WSN to collect real-time farming imformation and uses ZigBee to form the network and do data communication, while routers choose best communication ways according to target address and send the information to PCcontrol terminal. Then PC will give control command according to expert database and send the commands to base station in the greenhouse to operate peripheral equipments.
The intelligent control system based on WSN is introduced in detail in this article, which is consist of three parts. One part is sensor nodes (also called terminal instruments) distributing in the greenhouse which are used to collect argricultural information such as temperature, humidity, photometric quantity and so on. The second part is the greenhouse base-station (also called router nodes), which is used to gather the information, transmit them and to operate electrical equipment. The last part is terminal (also called pan coordinator), which is used to gather the information and communicate with virtual control platform in PC.
In terms of adaptive network forming and data communication routing algorithms choosing, an adaptive routing choice algorithms based on tree topology used in ZigBee network in this system is analyzed. This algorithm is based on LEACH algorithm, and the disadvantage of which is analyzed and improved in this article. Simulating results show that, after improving, energy consumption of the whole network is reduced and becomes more balanced, thus the lifecycle of the network is greatly lengthened.
After testing, the architecture of the control system designed in this paper is quite reasonable and each module circuit works well. The whole system is stable and of good properties and low price, which reaches every expected standards in advance.
Keywords intelligent control; precision farming; WSN; ZigBee; CC2430;
目 录
摘 要 I
Abstract II
目 录 IV
Content VII
第1章 绪论 1
1.1 课题的背景 1
1.1.1 农业信息化 1-..
我国是历史悠久的农业大国，基本国情决定了“三农”问题成为中国经济社会发展过程中的瓶颈。农业生产效率问题就成为当前现代农业建设中的一个重要课题。同时，大棚种植作为现代农业中一个非常重要的形式在我国发展飞速，目前我国已拥有世界上最大的蔬菜保护生产面积。有效提高大棚种植生产效率保证低投入高产出，必须依赖于先进的农业自动化技术和设备，对大棚内的种植环境进行实时采集和控制，确保作物的最佳生长环境。目前市场上应用较为广泛的基于PLC、单片机或现场总线技术的有线控制系统，虽然技术成熟，但在布线、成本、生产规模可扩展性等各方面存在局限。
本论文以上述系统的局限性为着眼点，探索基于无线通信技术的监控方案；同时抛弃西方发达国家基于GIS、GPS技术的大田精确种植体系方案，探索构建另外一种基于ZigBee技术无线传感器网络技术的智能控制系统。该系统利用无线传感器网络实现农情信息的实时采集，利用ZigBee技术实现组网和数据通信，由路由节点根据目标地址实现最优路径的选择，将农情信息发送到PC虚拟控制终端，并参照专家数据库的参数计算控制命令，发送到对应的大棚基站对外围电气设备进行控制，从而最终实现系统功能。
论文对基于无线传感器网络的智能大棚控制系统作了详细的阐述。该系统由分布在大棚内的传感器节点（终端设备）、大棚基站（路由器节点）和PC机终端节点（网络协调器）三部分组成。传感器节点负责温度、湿度、光照度和CO2浓度等农情信息的采集，大棚基站负责农情信息的汇总转发以及大棚内电气设备的控制，PC机终端负责信息的汇总和与PC虚拟控制平台的通信。
自适应组网和数据通信路由算法的选择上，论文分析了该系统基于ZigBee网络节点树形拓扑的自适应路由选择算法。该算法在分层路由LEACH算法的基础上，分析了该算法的缺陷并进行了改进。通过NS2仿真结果表明，改进后的算法网络总体能耗平稳，并有所降低，网络生命周期大大提高。
经系统测试，本文所设计的架构合理，功能电路实现较好，系统工作稳定，性能优良，成本低廉，较好地达到了预期的各项指标，具有一定的推广价值。
关键词 智能控制；精确种植；无线传感器网络；ZigBee技术；CC2430；
Abstract
Since China is a great agricultural country with long history, the basic national condition dicides that issues concerning agriculture, countryside and farmers to become a serious problem in economic and social development process. Agricultural production efficiency will become an important subject in modern agricultural development. At the same time, as a important form of farming, greenhouse develops rapitly in our country, and up to now, we have the world's largest greenhouse area. Growth in production efficiency depends on advanced agricultural equipment and automatic technology, which help collecting real-time imformation and controlling to keep a best growing environment for the plants in the greenhouse. Extensive application based on PLC, MCU or field bus technique in the market which are all wired control system, have limitations in wiring or price or scalability.
Having the disadvantages of the systems above in mind, another control system based on wireless communication is brought out without considering of the precision farming method using GIS and GPS in western countries, which using WSN based on ZigBee technology. This control system uses WSN to collect real-time farming imformation and uses ZigBee to form the network and do data communication, while routers choose best communication ways according to target address and send the information to PCcontrol terminal. Then PC will give control command according to expert database and send the commands to base station in the greenhouse to operate peripheral equipments.
The intelligent control system based on WSN is introduced in detail in this article, which is consist of three parts. One part is sensor nodes (also called terminal instruments) distributing in the greenhouse which are used to collect argricultural information such as temperature, humidity, photometric quantity and so on. The second part is the greenhouse base-station (also called router nodes), which is used to gather the information, transmit them and to operate electrical equipment. The last part is terminal (also called pan coordinator), which is used to gather the information and communicate with virtual control platform in PC.
In terms of adaptive network forming and data communication routing algorithms choosing, an adaptive routing choice algorithms based on tree topology used in ZigBee network in this system is analyzed. This algorithm is based on LEACH algorithm, and the disadvantage of which is analyzed and improved in this article. Simulating results show that, after improving, energy consumption of the whole network is reduced and becomes more balanced, thus the lifecycle of the network is greatly lengthened.
After testing, the architecture of the control system designed in this paper is quite reasonable and each module circuit works well. The whole system is stable and of good properties and low price, which reaches every expected standards in advance.
Keywords intelligent control; precision farming; WSN; ZigBee; CC2430;
目 录
摘 要 I
Abstract II
目 录 IV
Content VII
第1章 绪论 1
1.1 课题的背景 1
1.1.1 农业信息化 1-..
