Wireless infrared communication between two computers

Infrared (IR) technology is widely adopted and dominantly used forwireless communication. Relatively low distance communication system can be furnished by using IR communication as it is cheaper than widely used Bluetooth and Wi-Fi communication. A protocol has been researched to transfer data between computers by using IR technology and an apparatus also has been developed according to the protocol.MATLAB is used to manipulate data in a computer and transfers the data via serial port to the microcontroller of the apparatus.

Mathematical and logical operations are performed in the controller according to programmed instructions in order to send the data as a signal of IR light beam which modulates at a frequency of 38 kHz. An IR receiver picks up the signal and the receiving module converts the modulated light beam to corresponding electric signal which is decoded & defragmented by an another microcontroller to generate corresponding data. Then the accrued data is sent to another computer through serial port where it is received by MATLAB. This apparatus works perfectly within 8 meters with viewing angle between 15 to 30 degrees.