DTMF Based Eb Load Monitoring And Controlling System

Abstract

This project is developed for the users to monitor and control a system load through Telephone. There are two units. One in the office and the other in the user area. In the Office, a microcontroller kit is connected with a DTMF encoder. The microcontroller kit is connected to a PC through serial port. In the user area, a microcontroller kit with energy meter is connected with telephone line. According to the usage of the electric power, the microcontroller sends signal to the driver section and thereby operates a telephone. Also the microcontroller operates corresponding relays to send the meter reading through the telephone line. In the other side, the telephone line receives the signal through a DTMF encoder, the signal is converted to digital signal and given to the microcontroller. According to the signal, the microcontroller sends signal to the PC through serial port to display the meter reading in the user area. Thus the individual consumer load is sensed and are currently monitored in the office. The administrator can even cut the electricity of the user through telephone line. The microcontroller used in this project is PIC16F73 (28 pin Micro controller). The micro controller program is written in assembly language.

Existing System

Proposed System

Architecture

OFFICE MODULE

USER MODULE