基于USB接口温室大棚温湿度监测系统的设计

Temperature and Humidity Monitoring System Based on USB Interface in the Greenhouse

设计了一种温室大棚温湿度监测系统,采用一体化温湿度传感器SHT11实时检测环境温湿度,采用图形点阵型液晶JCM12232同屏显示温湿度值和上下限报警值;通过USB接口将采集到的实时数据上传给PC机,实时监测温湿度值;同时,VB编写程序实现了绘制温湿度历史变化曲线或实时曲线。单片机采用STC89C52主控芯片,通过按键设置温湿度上下限值,报警部分使用有源蜂鸣器,电源部分采用USB接口供电,即插即用、通用性强。实验表明,该监测系统性能稳定、工作可靠,具有示值稳定性好等特点。

A temperature and humidity monitoring system in the greenhouse is designed.It used for output figures temperature and humidity one sensor sht11 temperature and humidity to the environment in any way,semantic,graphical LCD display in some ranks with the screen displays module jcm12232 temperature and humidity value and the upper limit on the value and the alarm.then through USB interfaces will be taken to the real-time data on a PC to use the software application writes to draw curves temperature and humidity historical change or the real-time curve,pc and the buttons to switch real-time monitoring the temperature and humidity.Monolithic integrated circuits STC89C52 control,a key part of the settings temperature and humidity the limited value,stability and processing speed,the police use the source of the buzzer,it can work on the part of the USB interfaces,power and plug and universality.Experiments show that the monitoring system is stable,reliable,high precision,showing the value of good stability etc.