Mesure de l’humidité et la température dans une chambre d’agriculture en plastique

Abstract

Relative humidity (RH) is the amount of water vapor contained in a given volume of air compared to the maximum it could hold at a given temperature and pressure. Relative humidity ranges from 0 to 100%. The air is dry when the relative humidity is below 35%. The air is moderately humid between 35 and 65%, and the air is humid at more than 65% relative humidity. Within the same space, the RH varies according to temperature changes: it increases if the temperature drops and decreases if it rises. The measurement of humidity and temperature is important for agricultural applications to help farmers manage their irrigation systems more efficiently. Knowing the exact moisture conditions on their fields. It is common to have to measure these parameters to control certain systems. For example, to be able to create a refrigeration, plant care or air conditioning system that starts if the temperature or humidity reaches a certain value. However, for this to be possible, you need a sensor like the DHT11. The design of the electronic circuit based on DHT11 via an Arduino Uno card is intended for the measurement of humidity and temperature in a plastic agricultural chamber under Proteus ISIS environment and following the results obtained by simulation we will move on to design using Fritzing software and then to practical implementation