Light Fidelity Tracking System
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Date
2021-04-26
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Abstract
The proposed project will establish a baseline for a LiFi system through the implementation of a restorable stationary link to transmit an acceptable amount of power between a stationary base module and a mobile user module across the steradian application range. Since existing LiFi systems have limited mobility tracking, if any, this project will improve the widespread applicability of LiFi communication and increase the versatility of system use. The laser diode-based system will implement a searching and tracking methodology that facilitates communication between a stationary base and a mobile user through the establishment of a representative link. Transmission of power from the laser diode to a photodetector on the opposing module will represent a link connection that could employ methods of optical communication data transfer. Upon movement of the mobile user in a given space, the link can be re-established. The system is being developed as an integrated product of four functional subsystems: an optical path that facilitates the representative connection; a searching subsystem that enables the base and mobile user to locate each other; a motor subsystem that aligns the modules to form the representative link; and a method of reading and recording output power to verify connection. The focus of research will be the tracking methodology, a significant challenge associated with the narrow-beam and directionally dependent laser diode responsible for communication. The objective output product will be a starting point for further research into faster, cheaper, and more efficient means of tracking for optical wireless communication systems.
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Keywords
Light Fidelity, LiFi, Optical Wireless Communication, VCSEL, Laser, Tracking, Raspberry Pi, OpenCV