Based On Mobile Phone APP, DHT11 Temperature And Humidity Monitoring System

With the rapid development of radio communication technology,human society continues to progress,various areas of temperature and humidity monitoring accuracy is also getting higher and higher.Traditional granary,fruit and vegetable greenhouses,libraries,pharmacies and other indoor temperature and humidity monitoring is in the indoor hanging thermometer,according to read the value to adjust the indoor temperature and humidity,by manual control of temperature and humidity,both laborious,and prone to error,Adjust the temperature and humidity is not accurate enough.In response to this problem,I designed a mobile phone based on the APP temperature and humidity monitoring system,With the temperature and humidity monitoring system management granary,greenhouse,fruit and vegetable greenhouses,libraries and other indoor temperature and humidity,you can accurately adjust the temperature and humidity,but also reduce the cost of labor.The whole workflow is as follows: First DHT11 temperature and humidity sensor chip sensor indoor temperature and humidity,through the STC89C52 microcontroller effective and continuous work,and then induction real-time temperature and humidity changes,through the temperature and humidity from the microcontroller set to determine whether there is an abnormal situation,if the sensor The temperature and humidity information there is an abnormal situation,then the implementation of wireless transmission facilities,the real-time status information will be sent to the phone,mobile phone APP will signal to the single-chip relay on the implementation of exhaust work,if the exception is handled,the lifting of the APP alarm.After the software and hardware development of the temperature and humidity monitoring system is completed,the temperature and humidity monitoring system designed and developed according to the real environment of the greenhouse is simulated.On the one hand,test system function(whether the temperature and humidity of the greenhouse)can meet the expected target,on the other hand,check the stability of the system hardware at work and the compatibility of the software platform and the later maintainability.The feasibility of the temperature and humidity monitoring system is verified,and the existing development system is summarized by continuous experiment and repeated test,summarizing the existing problems and correcting them.