Low Cost Transmission Of Voice And DTMF Signals Using LASER Torch
Mohan Kumar P
Keywords : LASER, DTMF, Wireless, Optical communication
ABSTRACT: The microprocessor and digital network technologies have fundamentally reinvented the ways in which today's data acquisition systems handle data. Most of the laboratory and manufacturing unit, information is still communicated the old way, via analog electrical signals and a fundamental understanding of how analog signal transmission works. In this work, the low intense LASER beam is used for transmitting low power signals like audio signals and to enable a wireless communication between two nodes for information exchange. Also the same modules were used for transmitting standard signals like DTMF signals.
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