LED Light Fixture Visible Light Communication Security
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Solution Overview
Problem
Current communication systems in buildings rely on wires and radio waves, which are vulnerable to unauthorized access, interference, and signal overlap, leading to security and efficiency issues, particularly in managing energy consumption and providing reliable illumination and guidance.
Innovation Solution
The implementation of Visible Light Embedded Communication (VLEC) systems using Light Emitting Diodes (LEDs) for both illumination and secure data transmission, allowing for untethered communication and control of lighting and devices through visible light signals, integrated with existing electrical infrastructure for efficient energy management and secure data transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wires and radio waves are used for communication in buildings, then data transmission is enabled, but security is compromised due to vulnerability to unauthorized access and interference
Solution Approach 1:
The patent replaces traditional wired and wireless communication systems with visible light communication (VLC) technology. Light-based communication eliminates the vulnerabilities of electrical wires and radio waves by using optical signals that are naturally confined to line-of-sight paths, making them resistant to eavesdropping and electromagnetic interference while maintaining high data transmission speeds.
Solution Approach 2:
The patent introduces visible light as an intermediary medium for data transmission between devices. By using light signals transmitted through the air or optical fibers rather than electrical signals over wires or radio waves, the system creates a secure communication channel that is difficult to intercept or interfere with, thereby improving security without sacrificing transmission capability.
2Adaptability or versatility
If traditional lighting systems are used, then illumination is provided, but energy management is inefficient and cannot support integrated communication functions
Solution Approach 1:
The patent implements a unified lighting system that simultaneously performs illumination and data communication functions. By integrating communication capabilities into existing lighting infrastructure, the system eliminates the need for separate communication devices and enables smart building management through the same optical channel used for lighting control, thereby improving adaptability and reducing energy consumption.
3Productivity
If multiple light sources are used for communication, then data transmission capacity increases, but signal overlap and interference occur
Solution Approach 1:
The patent divides the communication spectrum into multiple orthogonal channels using different modulation techniques and frequency divisions. By segmenting the available optical spectrum and assigning specific time slots or frequency bands to different light sources, the system enables multiple devices to transmit data simultaneously without signal overlap or interference, thereby increasing overall transmission capacity while maintaining signal integrity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
VLEC systems provide secure, high-speed data communication, efficient energy management, and improved security by utilizing visible light for data transmission, reducing interference and signal overlap, while enabling flexible illumination and control of lighting and devices within buildings.
Implementation Method 1
The implementation of Visible Light Embedded Communication (VLEC) systems using Light Emitting Diodes (LEDs) for both illumination and secure data transmission
Data Source
AI summary
An LED light and communication system is in communication with a broadband over power line communications system. The LED light and communication system includes at least one optical transceiver light fixture. The optical transceiver light fixture includes a plurality of light emitting diodes, at least one photodetector, and a processor. A facility management unit is in communication with the processor. The facility management unit is constructed and arranged to control the operation of the optical transceiver light fixture.