30-05-2012, 04:38 PM
Micro Controller Based home automation using Touch Screen
Micro Controller Based home automation using Touch Screen.doc (Size: 284 KB / Downloads: 72)
INTRODUCTION:
These days ELECTRONICS AND COMMUNICATION technology influences almost every aspect of the home environment. Smart home technology is increasingly common in new homes and major home renovations, especially at the top end of market. Busy architects have usually got their hands full providing their core services. Touch screen is to create a flexible, comfortable and user friendly domestic environment, yet still allow non technical people to easily interact with the most technologically advanced system available.
A control and automation system integrates all the electronic system in and around your home through simple and easy to use touch screens or remote control. Advanced automation systems are very intelligent and can determine the status of home and environment.
An automation system can be designed to control,
1. LIGHTING
2. SECURITY
3. HOME THEATRE
4. IRRIGATION and WATER SYSTEMS
5. WINDOWS and DOORS
6. HEATING
METHODOLOGY
The process of home automation works by making everything the house automatically controlled using technology to control and do the jobs that we would normally do manually. It is much easier to install home automation in a house while it is still being built, since you have the ability to put things inside the walls to save space. Though, people who have houses already build can still have home automation done in a less intrusive ways.
The aim of this project is to build a LCD Touch Screen interface for high voltage electrical lamp dimming operation over wireless. The program running inside microcontroller can develop a virtual on screen keypad and a control panel. The status of lamp intensity can be viewed on LCD. No need to have mechanical rotational based control system or push buttons for this operation. Users can control the lamp intensity with gentle finger touch.
A TRIAC and optically isolated DIAC based circuit controls the intensity of the high voltage 230volts lamp. This system also employs a zero crossing detector for smooth operation of lamp intensity. This project consists of a Microcontroller that takes input from touch screen over wireless and processes the request. Then it processes the data and takes necessary action and up- dates the status on LCD. The optical isolation system safeguards the microcontroller-based system from high voltages.
User can simply set the desired intensity with a gentle touch on touch screen. This system also provides security authentication to access this system. User has to enter the password to get access this system.
THE PROJECT PROVIDES LEARNING’S ON THE FOLLOWING ADVANCEMENTS
1. Characteristics of touch screen sensor.
2. Interfacing touch screen sensor.
3. Lamp dimmer circuitry.
4. RF transmitter and RF receiver
5. Embedded C programming