UNIQUE OFFICE COMMUNICATION SYSTEM USING RF

ABSTRACT

This project is a PC based communication tool in office for data(text) transmission to a

individual or multiple users using radio frequency technology.

In most of the offices, if an employer has to convey a message to a particular employee or

a group of employees, he has to call them personally or send the message through a middleman.

But there is a possibility of message to be misinterpreted and there is wastage of time.

In this proposed system, employer in an office will have a transmission module while the

employees will have one receiver module each. If the employer wants to convey any message to

employees or any particular employee, he can send it through the transmitting module which is

connected to the PC. Receiver section consists of a module which receives the data and feeds to

the microcontroller that displays the message on an LCD. A buzzer is also interfaced to the

microcontroller on the receiver side, which gives intimation that data is received. Adapting this

technique one can eliminate the need of a third person for communication, so that the exact

message is delivered to the desired person.

This project in future can be enhanced, by adding a feature of two way communication

between the employer and the employee(s).

NOTE:

The project works only on operating systems having hyper terminal (E.g.

Windows XP). The computer must have a RS232 serial port.

BLOCK DIAGRAM

HARDWARE REQUIREMENTS:

8051 series Microcontroller, Push buttons,

Transformer, Regulator, LED, LCD, Resistors,

Capacitor, RF module, Level Shifter IC, DB9

connector.

SOFTWARE REQUIREMENTS:

Keil compiler

Languages: Embedded C or Assembly.