Realization of a Greenhouse Monitoring and Control System Using Fuzzy Logic Controller

Onyishi D. U., Epemu A. M.

Abstract


The design, development and construction of a Greenhouse monitoring and control system using a fuzzy logic controller were presented in this paper. The study was aimed at controlling various system parameters such as temperature, humidity, soil moisture, and lighting. The greenhouse controller system was designed using two microcontrollers, of which one microcontroller was interfaced with a DHT11 temperature sensor, an FC-28 soil moisture sensor, and a light-dependent resistor sensor used to measure the various climatic conditions. The microcontroller also sent these measured parameters as data to the control and monitoring application, while the other microcontroller was interfaced with an L298N motor driver module and a TIP122 power metallic field-effect transistor. Which was used to control the fans, heater, irrigation pump and light-emitting diode (LED) using Pulse Width Modulation (PWM). The system output parameters varied with a sudden change in the input value and error value to ensure the environment was optimal with little to no overshoot in the actuators. This controller can be useful in the automation of agricultural processes, most especially in commercial food crops production. And can be helpful in the monitoring of crops during the nursery stage when the plants are still tender and require a controlled environment to survive.


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References


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