Event Title

Development of Visible Light Communications Prototype and Analysis of LED Configurations for Smart Lighting

Session Number

J10

Advisor(s)

Peter Clancy, Illinois Mathematics and Science Academy

Location

A-129

Start Date

28-4-2016 9:15 AM

End Date

28-4-2016 9:40 AM

Disciplines

Engineering

Abstract

Radio wave communication is the primary mode of data transmission, but is vulnerable to interception or data theft. In addition, its heavy use restricts its available bandwidth. Thus, Li - Fi, or Visible Light Communication (VLC), has potential as an alternative. Through Li - Fi, higher transmission speeds, unregulated bandwidth, and unprecedented security could be achieved, allowing for applications like smart lighting. To begin investigating the personal, local applications of Li - Fi, we designed a minimal prototype transmitter, which utilizes a conversion algorithm and the technique of On-Off Keying (OOK) to flash an LED in accordance with generated binary code. The receiver utilizes the photoelectric effect to generate current following the light pattern, allowing us to recreate the binary generated from the transmitter. Different light formations in the transmission mechanism were tested for interference to determine the optimal configuration for reception. An increase in LED number should not create significant interference to affect the OOK operations, and thus even a bright, multi - diode appliance would be successful. In conclusion, the designed local prototype of Li - Fi demonstrated a successful and applicable algorithm for communication, as well as illustrated the capability of future Li - Fi appliances for different LED configurations.


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Apr 28th, 9:15 AM Apr 28th, 9:40 AM

Development of Visible Light Communications Prototype and Analysis of LED Configurations for Smart Lighting

A-129

Radio wave communication is the primary mode of data transmission, but is vulnerable to interception or data theft. In addition, its heavy use restricts its available bandwidth. Thus, Li - Fi, or Visible Light Communication (VLC), has potential as an alternative. Through Li - Fi, higher transmission speeds, unregulated bandwidth, and unprecedented security could be achieved, allowing for applications like smart lighting. To begin investigating the personal, local applications of Li - Fi, we designed a minimal prototype transmitter, which utilizes a conversion algorithm and the technique of On-Off Keying (OOK) to flash an LED in accordance with generated binary code. The receiver utilizes the photoelectric effect to generate current following the light pattern, allowing us to recreate the binary generated from the transmitter. Different light formations in the transmission mechanism were tested for interference to determine the optimal configuration for reception. An increase in LED number should not create significant interference to affect the OOK operations, and thus even a bright, multi - diode appliance would be successful. In conclusion, the designed local prototype of Li - Fi demonstrated a successful and applicable algorithm for communication, as well as illustrated the capability of future Li - Fi appliances for different LED configurations.