LED Lighting Logic Module Decoupled Architecture
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Solution Overview
Problem
Traditional lighting systems, particularly those using incandescent and fluorescent bulbs, suffer from limited color tunability, degradation over time, and acoustic issues in LED-based systems due to resonant frequencies, which affect color rendering and energy efficiency.
Innovation Solution
The implementation of a logic module decoupled from LED boards via a ribbon cable allows for centralized processing and control, enabling precise color channel management using spectral power distributions and tristimulus values stored in EPROM, allowing for wireless communication and data retrieval to maintain color accuracy and reduce acoustic noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If LED-based lighting systems are used to achieve long life and high energy efficiency, then energy efficiency and longevity are improved, but color degradation over time and acoustic noise issues occur
Solution Approach 1:
The system divides the lighting function into multiple color channels (e.g., red, green, blue LEDs) that can be independently controlled. This segmentation allows the system to maintain color accuracy by adjusting individual channel intensities to compensate for degradation, rather than relying on a single fixed-color LED that degrades over time.
Solution Approach 2:
The system dynamically changes operational parameters (current intensity ratios across different color channels) to maintain consistent color output. By monitoring and adjusting the relative intensities of multiple LED channels, the system compensates for age-related degradation and maintains reliable color performance throughout the LED lifecycle.
2Area of stationary object
If multiple LED-based lighting systems are placed near one another, then lighting coverage is improved, but color tuning responsiveness and acoustic noise issues are compounded
Solution Approach 1:
The system implements a universal control architecture that can manage multiple LED lighting systems through a single interface. The controller is designed to address individual color channels across multiple fixtures simultaneously, enabling centralized color tuning operations that maintain responsiveness even when controlling numerous interconnected LED systems.
3Power
If PCBAs with LEDs are driven at resonant frequencies, then lighting performance is improved, but acoustic noise is generated by vibrating capacitors and inductors
Solution Approach 1:
The system extracts the problematic resonant frequency operation from the LED driving scheme. By avoiding drive frequencies that coincide with the resonant frequencies of capacitors and inductors, the system eliminates the vibration and acoustic noise generated by these components while maintaining adequate lighting performance through alternative drive frequency selections.
4Device complexity
If fixed white LEDs are used in LED-based lighting systems, then simplicity is maintained, but color tunability is limited
Solution Approach 1:
The system transitions from static fixed-color LEDs to a dynamic multi-channel LED architecture where the color output can be adjusted in real-time. By enabling independent control of multiple color channels and implementing dynamic color mixing algorithms, the system achieves versatile color tunability while managing complexity through systematic control methods.
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 enhances the tunability and longevity of LED lighting systems by allowing simultaneous control of multiple boards, improving color rendering and reducing acoustic noise, while increasing energy efficiency and reducing production costs.
Implementation Method 1
sound may be produced by vibrating capacitors, such as piezoelectric ceramic capacitors that change dimensions in response to an applied voltage
Implementation Method 2
Some inductors may also create noise by magnetostriction
Data Source
AI summary
Various embodiments relate to systems and methods for controlling one or more LED-based lighting sources that are coupled to a logic module by a ribbon cable. The ribbon cable allows some or all of the processing components (e.g., processors and drivers) to be decoupled from the LED-based lighting source(s). The processing components can instead be housed within the logic module, which is able to simultaneously control the LED-based lighting source(s). Together with color models established for each LED board, the logic module acts as a platform for modularity and is able to more precisely control the color channels of each LED-based lighting source using the color models established for those LED-based lighting source(s). Techniques are also described herein that allow the logic module to utilize data stored within an erasable programmable read-only memory (EPROM) that describes the color characteristics of an LED-based lighting source.