基于LabVIEW的环境监测系统设计

Design of Environmental Monitoring System Based on LabVIEW

针对环境参数实时监测问题,设计了基于LabVIEW的环境监测系统。下位机采用DTH11温湿度传感器采集大气环境温度和湿度参数,MQ135气体传感器采集SO2浓度参数,STM32F103C8T6单片机处理数据。上位机采用LabVIEW搭建环境监测系统,通过串口与下位机进行通讯。经测试,监测系统能够对大气环境温度、湿度和二氧化硫气体浓度进行监测,实时显示其参数数值、波形图,具有阈值设置功能和超阈值报警功能,温度平均相对误差为2.08%,湿度平均相对误差为3.18%,气体平均相对误差为6.33%,满足环境参数智能化监测要求。

Aiming at the problem of real-time monitoring of environmental parameters,designs an environmental monitoring system based on LabVIEW.The lower computer uses the DTH11 temperature and humidity sensor to collect the atmospheric environment temperature and humidity parameters,MQ135 the gas sensor to collect the SO2 concentration parameters,and STM32F103C8T6 the single chip microcomputer to process the data.Host computer uses LabVIEW to build environmental monitoring system,through serial port and lower computer communication.After testing,the monitoring system can detect the atmospheric ambient temperature,humidity and sulfur dioxide gas concentration,display its parameter value and waveform diagram in real time.It has the function of threshold setting and super threshold alarm.The average relative error of temperature is 2.08%,the average relative error of humidity is 3.18%,and the average relative error of gas is 6.33%,meet the requirements of intelligent monitoring of environmental parameters.