LED Color Temperature Tuning via Constant-Power Load Allocation
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Solution Overview
Problem
Existing lighting systems, particularly those using mechanical switches, pose safety concerns in environments prone to gas explosions and require complex infrared sensor constructions or inefficient power control, and lack user-friendly control options for color temperature tuning and dimming.
Innovation Solution
A microcontroller-based electronic switch with controllable semiconductor devices and detection sensors, such as infrared or electrostatic induction sensors, that converts external motion signals into control signals for managing LED lighting loads, enabling on/off, dimming, and color temperature control through software-coded subroutines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical switches are used for LED lighting control, then simple on/off functionality is achieved, but electrical arcs occur causing safety concerns in gas-prone environments
Solution Approach 1:
The patent replaces mechanical switches with electronic switching devices (such as triacs or transistors) that are controlled by microcontrollers. This substitution eliminates the mechanical contact that causes electrical arcs, thereby maintaining safety in gas-prone environments while preserving the on/off control functionality through software-based control logic.
2Extent of automation
If infrared sensors are used for motion detection, then automatic control is achieved, but complex hardware construction is required
Solution Approach 1:
The patent integrates multiple sensing capabilities (infrared motion detection, electrostatic induction, and touch sensing) into a single unified control system managed by a microcontroller. This multi-functional approach allows the system to perform automatic control through various sensing modes without requiring separate complex hardware systems for each function, thereby reducing overall hardware complexity while maintaining automation.
3Ease of operation
If separate controls are provided for on/off, dimming, and color temperature, then precise control is achieved, but device complexity increases
Solution Approach 1:
The patent combines on/off control, dimming control, and color temperature tuning into a single integrated control system. The microcontroller manages all three functions through software-coded subroutines that respond to unified sensor inputs, allowing precise control of multiple parameters without requiring separate physical control mechanisms for each function, thereby reducing device complexity while maintaining operational precision.
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
The solution provides a safe, efficient, and user-friendly control system for LED lighting, avoiding electrical arcs and enabling seamless integration of on/off, dimming, and color temperature tuning without the need for complex hardware changes, enhancing safety and user experience.
Implementation Method 1
detection sensors, such as infrared or electrostatic induction sensors
Implementation Method 2
detection sensors, such as infrared or electrostatic induction sensors
Implementation Method 3
a first controllable semiconductor switching device electrically connected in series with a power source and a first LED lighting load for emitting light
Implementation Method 4
controllable semiconductor switching devices operable to control a conduction or cutoff state
Data Source
AI summary
A theory and a technical foundation for building a technical framework of a color temperature tuning technology are disclosed, composing a power allocation algorithm and a power allocation circuitry, wherein the power allocation algorithm is a software for designing a process of dividing and sharing a total electric power between at least a first LED load emitting light with a first color temperature CT1 and a second LED load emitting light with a second color temperature CT2 to generate at least one paired combination of a first electric power X allocated to the first LED load and a second electric power Y allocated to the second LED load to create at least one mingled light color temperature CTapp thru a light diffuser according to color temperature tuning formulas CTapp=CT1·X/(X+Y)+CT2·Y/(X+Y) and X+Y=constant; and the power allocation circuitry is a hardware designed for implementing the process.