10-10-2012, 03:38 PM
PRE-PAID POWER CONSUPTION USING COIN BOX
PRE-PAID POWER.doc (Size: 27.5 KB / Downloads: 39)
ABSTRACT
This project deals with development of coin operated prepaid energy meter. Most of the energy meters used post paid so that there is misuse of electric city so to solve this problems low cost energy saver. Using 555 timer Tx(IR) and Rx(IR) are used to count the number of coins inserted. As after filling some coins whenever we use to press the pulse button timers starts counting pulse, till complete of time pulse.
The AT89S52 is an 8-bit microcontroller with 8k bytes of flash ROM, 256 bytes of RAM and is preferred in using this micro due to its quick programming and ease of use.
In this project, the programming is done on the basis of number of counts using, when ever start button pressed timer starts counting then till the available balance is empty device is on.