基于模糊控制的西瓜温室远程监控系统的研究

Research on remote monitoring system of watermelon greenhouse based on fuzzy control

为提高温室管理水平与生产效益,本文以西瓜为例研发基于模糊控制包含环境信息采集模块、服务器管理平台、STM32单片机控制模块和远程监控中心的西瓜温室远程监控系统。环境信息采集模块通过传感器节点采集温室内的空气温湿度、光照强度、二氧化碳浓度、土壤湿度、土壤pH值和土壤EC值,利用ZigBee协议进行组网并通过物联网网关和GPRS网络实现数据传输;STM32单片机控制模块控制滴灌系统、通风扇、加热线、灯带和湿帘的运行;利用模糊控制技术以温湿度为例结合西瓜不同时期的生长特性设计模糊控制器,对温室环境变量进行多变量去耦合控制;远程监控中心通过界面友好的APP客户端进行远程监控。试验表明,该系统能够实现西瓜温室的远程智能化管理,使作物处于最佳生长状态。

In order to improve management level and production efficiency in greenhouse,a remote monitoring system for watermelon greenhouse was developed,including environmental information collection module,server management platform,STM32 microcontroller control module and remote monitoring center.Air temperature and humidity,light intensity,carbon dioxide concentration,soil moisture,pH value and EC value of soil can be collected,through sensor node of environmental information collection module.Data transmission can be achieved by Internet of things gateway and GPRS network,using ZigBee protocol.The operation of drip irrigation systems,ventilation fans,heating line,ceiling light and wet curtain are controlled by STM32 microcontroller control module.Taking air temperature and humidity as an example,the fuzzy controller is designed,based on the growth characteristics of watermelon in different growing stages,which can complete the multivariable decoupling control.The remote monitoring center achieves the monitoring with user-friendly client APP.The experiment indicates that this designed system can realize the remote monitoring in watermelon greenhouse,and keep the crops in optimum growing condition.