17-09-2014, 02:00 PM
Energy Saving by Automatic Control of Power in Simple Home Appliances Project Report
[attachment=68055]
Abstract:
This system saves energy by efficient power management of a room which employs certain controlling mechanisms managed by a microcontroller. The mechanisms include light control relative to the natural light intensity in the room, fan control relative to the room temperature and motion detection for determining absence of occupants in the room. The MCU reads light intensity level from an LDR voltage divider circuit. If the natural light intensity is below the preset threshold value then the lights are turned on and vice versa. Room temperature readings are taken from an Lm35 sensor and compared with the user defined threshold value. If the readings are above or equal to the threshold value then the fans run at full speed. If it is below the threshold the fans are turned off. At intermediate temperatures the fans run at intermediate speeds. Motion detection is achieved by using a PIR sensor. If the room stays unoccupied for a preset amount of time the loads are turned off to prevent wastage.
Introduction
Energy saving, in any system, deals with the minimization of energy wastage. To achieve this, the efficiency of the individual components and processes of the system needs to be improved. Automatic control refers to any controlling mechanism which does not require any human intervention. These two aspects are addressed, to some extent, in this paper. The organization of the paper is as follows. At first, the objectives, main concepts and the tools used are mentioned. Then the system design is explained using flowcharts and later simulation results are given along with the problems faced. Next, hardware implementation is dealt with. Lastly, further developments are mentioned
Software Requirements:
1. Microcontroller IDE (For Writing the Code) Keil MDK411
2. Programmer Application (For Dumping the Code) JTAG
3. Simulation Software. Proteus8
APPLICATION LANGUAGE: Embedded ‘C’
Hardware Requirements:
1. Microcontroller : LPC 1343
2. Power Supply Unit
3. LDR
4. LM35 Temperature Sensor
5. LED
6. L293D
7. DC Motor.
[attachment=68055]
Abstract:
This system saves energy by efficient power management of a room which employs certain controlling mechanisms managed by a microcontroller. The mechanisms include light control relative to the natural light intensity in the room, fan control relative to the room temperature and motion detection for determining absence of occupants in the room. The MCU reads light intensity level from an LDR voltage divider circuit. If the natural light intensity is below the preset threshold value then the lights are turned on and vice versa. Room temperature readings are taken from an Lm35 sensor and compared with the user defined threshold value. If the readings are above or equal to the threshold value then the fans run at full speed. If it is below the threshold the fans are turned off. At intermediate temperatures the fans run at intermediate speeds. Motion detection is achieved by using a PIR sensor. If the room stays unoccupied for a preset amount of time the loads are turned off to prevent wastage.
Introduction
Energy saving, in any system, deals with the minimization of energy wastage. To achieve this, the efficiency of the individual components and processes of the system needs to be improved. Automatic control refers to any controlling mechanism which does not require any human intervention. These two aspects are addressed, to some extent, in this paper. The organization of the paper is as follows. At first, the objectives, main concepts and the tools used are mentioned. Then the system design is explained using flowcharts and later simulation results are given along with the problems faced. Next, hardware implementation is dealt with. Lastly, further developments are mentioned
Software Requirements:
1. Microcontroller IDE (For Writing the Code) Keil MDK411
2. Programmer Application (For Dumping the Code) JTAG
3. Simulation Software. Proteus8
APPLICATION LANGUAGE: Embedded ‘C’
Hardware Requirements:
1. Microcontroller : LPC 1343
2. Power Supply Unit
3. LDR
4. LM35 Temperature Sensor
5. LED
6. L293D
7. DC Motor.