Analysis of Composition System of Temperature and Humidity Monitor in Vegetable Greenhouse

August 24 03:28:28, 2021

The cultivation mode of greenhouse vegetable is more and more important in modern agriculture. In the process of planting, the adjustment of temperature and humidity is very important, which directly affects the yield and quality of crops. The traditional method of measurement and adjustment is to use a humidity meter, a bimetallic meter, and a humidity tester to test manually, and then perform ventilation or dehumidification and heating. However, with the progress of production, and in order to improve work efficiency and accuracy, the application of temperature and humidity monitors is particularly important.

The temperature and humidity monitor system uses the SHT11 single-chip intelligent temperature and humidity sensor. The relative humidity range is 0 to 100%, the resolution is up to 0.03%, the highest accuracy is 2%RH, the measurement temperature range is -40 to 123.8Â°C, the resolution is 0.1Â°C, and the accuracy of dew point measurement is 1Â°C. When connecting, only two lines are needed to realize two-way communication between the SCM and the SHT11. No external components are required during use. The measured temperature can be programmed to achieve 9 to 12-bit digital serial output. The temperature range is large. ,High precision.

The application effect of the temperature and humidity monitor is obvious, and it is also the trend of modern greenhouse vegetable cultivation. For the understanding of the temperature and humidity monitoring system related systems, as an outsider is not easy to understand. In fact, system debugging uses a combination of modular debugging and overall combined debugging. After modular software simulation, hardware circuit debugging and assembly testing, the temperature and humidity data acquisition function of the SCM system, the initial display function of the slave LCD, the temperature and humidity setting function of the upper and lower buttons, the sound and light alarm function, and USB data transmission were finally realized. Functions and PC USB data receiving function, temperature and humidity processing display function, history and humidity information history curve printing and other functions.
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