节能型温室大棚群集中供热智能监控管理系统

Intelligent Monitoring Management System for Centralized Energy-saving Greenhouse Group Heating

摘要:

为了能够自动调节温室大棚内空气和土壤的温度,采用并联按需供热方式设计了温室大棚群的供热系统,同时,设计了具有三层管理结构的集中供热监控管理系统,主要由温度监控节点、大棚总节点和锅炉房管理中心组成；温度监控节点利用传感器Pt100采集散热箱管道内热水的温度,然后通过ZigBee无线网络发送到大棚总节点,再根据预设的温度,控制风扇的工作状态和管道控制阀来调节棚内的温度和管道换水操作;大棚总节点利用热能表计算流入棚内的热量,再将整个大棚内的温度数据处理后,通过CAN总线发送到锅炉房的计算机上；测试结果表明,设计的系统工作稳定可靠,大大提高了供热效率和自动控制水平,整个大棚内各角落的温度差小于0.5 ℃,为精细化和智能化农业发展提供了强有力的技术保障。

Abstract:

To adjust the temperature of the air and soil for the greenhouse automatically,the parallel heating method with demand is used to design a greenhouse heating system. Meanwhile,the centralized heating and monitoring management system that is composed of temperature monitoring nodes,general node and management center of boiler room is designed by three layers of management structure. The temperature monitoring node uses the sensor Pt100 to get the temperature of hot water in the radiator pipe and send it to the general node by ZigBee wireless network,adjusting the temperature of the greenhouse and water-exchanging operation by controlling the fans and pipeline valves according to the pre-set temperature. The general node can calculate the quantity of heat through the meter and send them to the computer in the boiler room through CAN bus after processing the whole temperature data. The test results show that the designed system works well and greatly improve the heating efficiency and automatic control level,which makes the temperature difference less than 0.5 ℃,providing a powerful technical support for the refinement and intelligent agricultural development.