10-04-2017, 09:36 PM
ppt for embedded green house automation system
ABSTRACT
Monitoring and control of greenhouse environment play an significant role in greenhouse production and management. To monitor the greenhouse environment parameters effectively, it is necessary to design a control system. Here controlling process takes place effectively by both manual and automatic manner. For manual control purpose, zigbee wireless network is used, which will send status of greenhouse environment automatic control process to control room. There we can control the activities through PC and send to controller back which is in greenhouse environment. There it will activates the actuator according to our wish. The main objective is to design a simple, easy to install, microcontroller-based circuit to monitor and record the values of temperature, humidity, and sunlight of the natural environment that are continuously modified and controlled in order optimize them to achieve maximum plant growth and yield. PIC 16F877A controller is used. It communicates with the a variety of sensor modules in order to control the light, aeration and drainage process efficiently inside a greenhouse by actuating a cooler, fogger, dripper and lights respectively according to the necessary condition of the crops. Greenhouses are often used for growing flowers, vegetables & fruits plants. The closed environment of a greenhouse has its own unique requirements, compared with outdoor production. Pests and diseases, and extremes of heat and humidity, have to be controlled, and irrigation is necessary to provide water. Significant inputs of heat and light may be required, particularly with winter production of warm-weather vegetable. The main aim of this project is to control the basic parameters of the green house. Different sensors are used in this project to measure various parameters.Light Dependent Resistor will be used to measure the light intensity, Temperature sensor will be used to get the temperature & timely irrigation will be provided by turning ON the motors at specific intervals. LCD will display the current temperature & light intensity. To display the temperature and intensity values, initially these values have to be converted into digital values. ADC is used to convert the analog parameters into digital values.Thus, whenever the temperature exceeds the set point, the cooling system will be turned on automatically. Whenever light intensity is low in the room, the lights will be switched on automatically according to the intensity of sunlight in the room.
SOFTWARE AND HARDWARE TOOLS:
Software Tools:
Keil compiler
Orcad.
Hardware Tools:
Microcontroller AT89S52.
Sensors- LDR and LM35
ADC
LCD
TRIAC and TRIAC driver