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LUGGAGE SECURITY SYSTEM

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TRANSMITTER


SPECIAL PURPOSE LED TRANSMITS INFRARED RAYS

MADE OF GALLIUM ARSENIDE OR ALLUMINIUM GALLIUM ARSENIDE

APPEARANCE SAME AS A COMMON LED

HUMAN EYE CANNOT SEE THE INFRARED RADIATIONS

CAMERA ON A CELLPHONE CAN BE USED

USED AS SENSORS



RECIEVER


We see colors and act depending on the different things seen. The phototransistors does the same thing, if reacts depending upon the intensity of infrared light being shined at it.


APPLICATIONS


Airprots
Museums
Shopping Malls
Theaters
Temples and Pilgrimage places etc