温室环境下多变量的控制系统设计

Design of Multi-variable Control System in Greenhouse

针对有效、快速地检测和控制温室环境因素是温室生产的关键这一问题,介绍了温室中温度、湿度、光照和CO2浓度等主要的环境因素,并研究了对这些因素进行有效管理和控制的策略,设计了温室环境下多变量的控制系统。该系统体系结构为工控机和单片机开发系统的主从式结构,能够对温室内外环境因子进行实时监测和智能化调节,为农作物创造最优化的生长条件;系统以PC机为上位机,完成数据打印、数据处理和参数设置等辅助任务;采用MCS-51单片机为下位机,完成全部控制功能,下位机可脱离上位机独立工作。

It is the key question for greenhouse to detect and control greenhouse environment tactors such as temperature, humidity,lighting, CO2 and density etc. effectively and rapidly and studies the strategies of effectively managing and controlling these factors. Multi - variable control system in greenhouse is designed. It is composed of industrial computer and single chip microprocessor as it＇ s control core. In order to create optimized growing conditions of crops. The greenhouse environmental factors, are adjusted in time with the help of real time inspection and intelligent decision making module. The system applies distributed system structure ： with the help of pc, assistant functions such as the dada processing, the data printing and parameter configuration are completed. The MCS - 51 is used as a bottom computer, which can dependently run, finishes the entire control task.