基于ZigBee和GPRS的无线环境监测系统

发布时间：2018-10-20 09:31

【摘要】：粮食是人类生存的必需品,而粮库中的温、湿度等环境因素决定着粮食存放时间的长短,因此,对粮库环境进行定时检测是非常重要的。然而,传统的粮库监测大都采用人工测量或现场总线布网的方式,此类方式布线困难、组网复杂,也不易维护。针对传统粮库存在的缺点,文中提出了一种基于ZigBee和GPRS的无线环境监测系统解决方案,采用了以CC2530芯片外加CC2591射频芯片为核心的节点开发策略,移植了Z-Stack协议栈,对ZigBee组网系统进行了软件设计；采用了GPRS通信方式实现数据远程转发；应用VC6.0平台设计了上位机监测界面。该系统由协调器、路由器、终端节点、GPRS通信模块、通风设备和上位机监测中心六部分组成。系统具有现场实时数据采集、处理、传输和存储的功能。采集节点将采集的环境数据以多跳形式汇聚到网络协调器,最终通过GPRS和Internet网络,将数据转发至远程数据监控中心。上位机主要完成数据的实时显示、存储并具有报警提示功能。管理人员可以通过上位机监测粮库的温、湿度信息和节点的电压信息,当温、湿度超过所设定的报警限值时,将会有报警提示,提醒管理人员调节粮库的温、湿度,当节点电压过低时,将提醒管理人员及时更换电池,避免节点因电压过低出现采集不准确的问题；管理人员可以通过上位机发送指令去控制采集节点的开启、关闭及采集的时间间隔,当粮库的温、湿度超过设定的报警限值时,管理人员可以通过上位机发送相应指令去控制通风设备的开启与关闭,从而达到快速、安全、智能化地管理。实验证明,基于ZigBee和GPRS的无线环境监测系统具有采集数据准确、数据传输实时性较好、操作简单等优势。该粮库系统基本上可以实现对粮库温、湿度信息的采集任务,对于将来设计大型粮库有一定的参考价值。
[Abstract]:Grain is a necessity for human survival, and environmental factors such as temperature and humidity in grain depots determine the length of grain storage time. Therefore, it is very important to detect the environment of grain depots periodically. However, most of the traditional methods of grain depot monitoring are manual measurement or fieldbus, which is difficult to wire, complex and difficult to maintain. In view of the shortcomings of traditional grain depots, a wireless environment monitoring system based on ZigBee and GPRS is proposed. The node development strategy based on CC2530 chip and CC2591 RF chip is adopted, and the Z-Stack protocol stack is transplanted. The software of ZigBee networking system is designed, the GPRS communication mode is adopted to realize the remote data forwarding, and the upper computer monitoring interface is designed by using VC6.0 platform. The system consists of six parts: coordinator, router, terminal node, GPRS communication module, ventilation equipment and host computer monitoring center. The system has the function of real-time data acquisition, processing, transmission and storage. The collection node gathers the collected environmental data to the network coordinator in the form of multiple hops, and finally forwards the data to the remote data monitoring center through the GPRS and Internet networks. The host computer mainly completes the real-time data display, stores and has the alarm prompt function. The manager can monitor the temperature, humidity and voltage information of the grain depot through the upper computer. When the temperature and humidity exceed the set alarm limit, there will be alarm warning to remind the manager to adjust the temperature and humidity of the grain depot. When the voltage of the node is too low, the manager will be reminded to replace the battery in time to avoid the problem of inaccurate acquisition because the voltage is too low. The manager can send instructions to control the opening of the acquisition node through the upper computer. When the temperature and humidity of the grain depot exceed the set alarm limit, the manager can send the corresponding instructions through the upper computer to control the opening and closing of the ventilation equipment, so as to achieve speed and safety. Manage intelligently. The experimental results show that the wireless environment monitoring system based on ZigBee and GPRS has the advantages of accurate data collection, real-time data transmission and simple operation. The system can basically realize the task of collecting the temperature and humidity information of grain depot, which has certain reference value for the design of large grain depot in the future.
【学位授予单位】：湖北大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：X84;TN92;TN929.532

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