The Automatic Temperature Control for Agricultural Plant House

摘要

Paper presents automatic temperature control for plant house. Water evaporation technique is applied. The system has to water the plant and control temperature in range of 24-30 °C. Arduino Uno R3 was used as microcontroller. Temperature and humidity were detected by DHT sensors module. The four relays were used for controlling system. LCD screen showed condition of environment. Two pumps were used for watering plants and cooling pads. Cooling pads were use in cooling system applying water evaporation technique. A fan was installed on the top of house plant. For the construction of plant house, structure made of PVC tube. The house was covered by PVC canvas. Light can pass throughout. For watering system, ¼ inch tube was installed to water the plant. From experimental results show that the automatic system can be controlled temperature in the range of 24-28 °C. The relative humidity in house is approximately 75-90% while outside house is about 45-75%. Finally, the rate of growing in plant house by temperature control is higher about 30% than natural condition.