Implementation Of Sleeping Timer For TV And Music System For Power Saving

IMPLEMENTATION OF SLEEPING TIMER FOR TV AND MUSIC SYSTEMS FOR POWER SAVING

In this competitive world human cannot spare his time to perform his daily activities manually without any fail. The most common thing that he forgets to switch off is the television or the music system which he watches during nights and fails to switch it off. With this, even the power will be wasted up to some extent. This project gives the best solution for electrical power wastage. Also the manual operation is completely eliminated. This project provides preprogrammed timings to switch off them automatically after a predefined time. The user can once program these timings according to his requirements and can also change them at any time according to his requirement.                      

            This system switches off the electrical appliances only at preprogrammed timings. As the DS1307 Real Time Clock chip with battery back-up is used, there will be no disturbances for the programmed on/off timings even in power failures.

Three switches are provided for entering the required timings. These switches made this project user friendly. 16X2 LCD display is provided to display the alarm times and current time. DS1307 is interfaced to the microcontroller for real timing performance. A 3V battery can be connected to DS1307 to avoid time disturbances caused by power failures. The user can even change the preprogrammed timings and set the timings according to his requirements.

SOFTWARE AND HARDWARE TOOLS:

Software Tools:

1. Keil compiler
2. Orcad.

Hardware Tools:

1. Microcontroller AT89S52.
2. RTC
3. Switches
4. LCD
5. Relays and loads

Block diagram