LED Field Light Li-Fi Link for Fast Vehicle-Implement Data Transfer
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Solution Overview
Problem
Conventional communication protocols in agricultural and off-road vehicles struggle to handle the increasing amount and speed of data transfer between machines and implements, particularly due to limitations in wired communication and satellite-based GPS systems.
Innovation Solution
The implementation of a Li-Fi communication protocol using high-definition pixel LED lighting systems, where light signals are transmitted and received between vehicles and implements, enabling optical data transmission and conversion into readable formats for controllers, allowing for higher bandwidth communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional wired communication protocols are used, then device complexity is reduced, but data transfer speed and bandwidth are insufficient
Solution Approach 1:
The patent replaces conventional wired mechanical/electrical communication systems with optical communication using light signals from LED lighting systems. This substitution enables significantly higher data transfer speeds while utilizing existing lighting infrastructure, thereby improving speed without proportionally increasing system complexity
Solution Approach 2:
The patent enables LED lighting systems to serve dual functions: providing illumination and transmitting data simultaneously. By modulating the light output of existing LEDs, the system achieves high-speed data communication without requiring separate communication hardware, thus improving bandwidth while maintaining simplicity
2Speed
If satellite-based GPS communication is used, then communication range is extended, but data transfer speed is limited by signal transmission delays
Solution Approach 1:
The patent introduces optical light signals as an intermediary communication medium between work vehicles and implements. This local optical communication channel eliminates the need for satellite signal transmission, thereby removing the associated time delays while maintaining communication capability
Solution Approach 2:
The patent segments the communication system into local optical communication pairs (vehicle-to-implement) rather than relying on a centralized satellite system. Each vehicle-implement pair establishes its own direct light-based communication link, enabling instantaneous data exchange without satellite transmission delays
3Adaptability or versatility
If conventional lighting systems are used, then illumination function is provided, but data transmission capability is not available
Solution Approach 1:
The patent transforms conventional single-function lighting systems into multi-functional systems that simultaneously provide illumination and data transmission. By modulating the light intensity or frequency of existing LEDs, the system encodes data within the light output, enabling communication without additional hardware complexity
Solution Approach 2:
The patent enables the lighting system to serve its own communication needs by using its light output as the communication medium. The LED drivers that control illumination are repurposed or slightly modified to also modulate light for data transmission, allowing the lighting system to provide both functions without requiring completely separate systems
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
This solution facilitates faster and more efficient data transfer between work vehicles and implements, overcoming the limitations of conventional communication methods by utilizing Li-Fi technology for high-speed data transmission without electromagnetic interference.
Implementation Method 1
Each light-transmitting module may include one or more LEDs with a visible light communication (VLC) technology to perform optical data transmission
Implementation Method 2
The receiving module may include a photodetector that receives the light signals and converts them into electrical signals
Data Source
AI summary
An agricultural work vehicle includes a chassis, a cab mounted to the chassis and including a work space for an operator to control the work vehicle, and a controller for controlling operation of the work vehicle. The work vehicle further includes a lighting system having at least one array field light for illuminating an area on or around the work vehicle. A light control module is disposed in electrical communication with the controller and is configured to operably control the at least one array field light. The controller transmits a signal to the light control module, and the at least one array field light transmits a light signal corresponding to the signal which is receivable by a receiving module on another work vehicle or implement.