The Wireless Temperature And Humidity Monitoring System Design

In modern life, temperature and humidity are closely related to people’s production andlife, as well as the main environmental conditions of the modern chemical industry andagricultural production.Whether food storage,warm shed vegetables,eggs hatch andfresh-keeping all require appropriate temperature and humidity. As the improvement of livingstandard and the acceleration of modernization, the traditional temperature and humiditymonitoring system has been unable to meet the needs of the masses due to the low efficiency,slow transfer rate, high implementation cost,big intensity of labor.In the producing process of introducing wireless transimission technology into the granary,vegetable greenhouses, etc. Agriculture is likely to turn the production pattern which ishuman centered, and relies on the isolation into a production mode oriented to informationand software. Wireless temperature and humidity monitoring system can provide timelyreal-time monitoring of temperature and humidity information to the relevant staff. This canensure relevant personnel can master the field monitoring case in the first time and take thenecessary measures in time to avoid the phenomenon of blind acquisition monitoringtemperature and humidity,The use of system will greatly reduce the labor intensity and willbring high economic benefits. In order to realise the sustainable development ofenvironmental protection,it is of great significance to realize granary, vegetable greenhouses’information acquisition and automatic deployment, automatic transmission and intelligentcontrol, to improve the facilities within the working environment and working conditions, toimprove the facilities within the working environment and working conditions, improve thework efficiency, guarantee labor people’s physical health, improve people’s quality of life, toimprove the work efficiency, ensure the labor people’s physical health and improve people’squality of lifeBased on the current domestic and international online monitoring system oftemperature and humidity of the actual situation, in order to effectively prevent food spoilageand waste, while saving human and material resources as well as various resources, thispaper granary temperature and humidity monitoring for the study, research and design awireless temperature and humidity acquisition and a wireless receiver control system, which monitors system consists of data acquisition, wireless data transmission, data processing,display and alarm modules. System uses AT89C52microcontroller controls temperature andhumidity sensors SHT10, through SHT10reads temperature and humidity data,and displaystemperature and humidity data in the LCD1602, and then wireless transmitter module willsend out the data collected, Monitoring Centre wireless receiver module receives the dataafter the data to the receiver part of the MCU, the microcontroller controls the display output.Wireless module uses a set of core nRF905wireless data transmission module receivingtemperature and humidity acquisition and transmission module signals coming, and then theresulting demodulated data to the temperature measurement points receiver chip, and thenthrough the serial port data upload first bit machine. Receiving end microcontroller and PCconnection between the use MAX232chip to achieve RS232C level TTL level conversion.Part of the alarm uses sound and light alarm circuit, when the temperature and humiditysensor to the measured ambient temperature or humidity value is not pre-set range, the systemcan be audible and visual alarm signals, sound the alarm part of the selection of the alarmdevice is a passive electromagnetic buzzer, light alarm part adopts LED display lights,temperature and humidity acquisition module AT89C52microcontroller internal memorypreset temperature and humidity range, when the detected temperature exceeds or falls belowthe set real-time temperature and humidity values will issue the corresponding alarm signal.The system is intuitive and simple,technical support and strong, easy to operate and use, Ibelieve that it will promote the use of large area in the near future.This paper analyzes the significance of research, present situation and developmentprospect in the temperature and humidity monitoring research, the main content of research,and then discusses the hardware and software design scheme of temperature and humiditywireless monitoring system, finally analyses the system debugging and simulation process.The experimental results show that the system can monitor the temperature and humidity formultiple intelligent monitoring and has a low cost, multi-function and high reliability.