INTEGRATED ENERGY MANAGEMENT SYSTEM BASED

ON GSM PROTOCOL WITH ACKNOWLEDGEMENT

FEATURE

ABSTRACT

The main objective of this project is to develop a device that controls the home

appliances through SMS with integrated acknowledgement feature. Unlike the

conventional system present in houses, where one has to manually switch on and off the

appliances. The proposed system allows the owner of the house to control the appliances

by just sending an SMS to the device and then also receiving the status of the same via

return SMS.

This is extremely convenient for users as they can control their house loads any

time and from any place in the world. An example of how this technology can make our

lives better is that when a person is travelling and wishes that the moment he enters his

room, it should be cool enough to make him comfortable. In such a case, with the help of

this system, he can switch on the AC while he is travelling.

An SMS is sent to the GSM modem which is interfaced to the microcontroller.

The modem receives the message and sends the command to the microcontroller which

processes this and initiates a mechanism that activates a relay to control the

corresponding home appliance. An added feature of this system is that the owner can get

the status of all the loads (whether on or off) in the house by sending a status query SMS

to the base station. All the status can also be seen on an LCD display interfaced to the

microcontroller.

BLOCK DIAGRAM

HARDWARE REQUIREMENTS:

8051 series Microcontroller, Level Shifter IC, GSM modem, LCD, Relay driver IC, Relay, Resistors, LED, Capacitors, Diodes, Transformer, Voltage Regulator, Lamps.

SOFTWARE REQUIREMENTS:

Keil compiler

Language: Embedded C & assembly