The development of the crop grown in the greenhouse depends on the internal environment such as air movement, temperature, humidity, C0 2 and light. The monitoring and control of this parameter play a vital role in the overall development of the plant, its production and management. Commercially available greenhouse monitoring systems are quite expensive. The Indian poor farmers are unable to deploy this commercial systems. This paper presents a low cost system developed to monitor and control the greenhouse environment. The system is developed using ATMEGA 168 controller Arduino Uno board which is low cost, effective and simple. Various sensors are integrated to this board which monitor and control various parameters. Condensation occurs if temperature and humidity is not maintained properly. This affects the overall growth of plant. Experimental results demonstrates the monitoring and controlling capabilities of the developed system.
Greenhouses are controlled area environment to grow plants. In order to achieve maximum plant growth, the continuous monitoring and controlling of environmental parameters such as temperature, humidity, soil moisture, light intensity, soil pH etc. are necessary for a greenhouse system. The main aim of this project is to design a simple, low cost, Arduino based system to monitor the values of environmental parameters and that are continuously updated and controlled in order to achieve optimum plant growth and yield. 4 in 1 sensor module is designed which consist of temperature sensor, humidity sensor, light intensity sensor and pH sensor to measure respective parameters. All environmental parameters are sent to user mobile via internet (IOT). A mobile app is designed to get plant data from any distance around the worlds. An alert message is displayed on the mobile app (LCD display as well) user when the sensor value exceeds a defined level. All farmers can control their greenhouses from any place by knowing the status of their greenhouse parameters at any time and they can control actuators (cooling fan, exhaust fan, water pump) to adjust environmental parameters. In addition colour sensors are used to get the RGB values of soil. With RGB values it is possible to predict the health of soil, i.e. we can analyze the nutrients present in the soil. If it is observed that the RGB values of soil are mismatching with the standard values, suitable mixtures can be added to compensate for the same. Ardiuno Mega controller is used as a controller device is programmed in such a way that it continuously monitors the data from the sensors, displays data parameters on LCD display, and transfers data to mobile app via IOT module. And also whenever the controller observes that the parameters are getting exceed of threshold values, it sends signal to the controlled devices (e.g. Fan) to turn it ON, at the same time alert message will be displayed on LCD display and mobile app.
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