3-Way LED Dimming Brightness and Color Temperature Control
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Solution Overview
Problem
Current lighting control systems for LED lighting lack the ability to precisely adjust brightness and color temperature independently, limiting their adaptability to different lighting conditions and user preferences.
Innovation Solution
A luminaire device with a dimmer, signal detection unit, and microcontroller that controls three LED light-emitting devices with different correlated color temperatures (CCTs), allowing for independent adjustment of brightness and CCT through a power-distribution scheme based on user-adjustable electronic signals, enabling precise lighting effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional LED lighting control systems are used, then the system structure is simple, but the ability to independently adjust brightness and color temperature is limited
Solution Approach 1:
The patent divides the LED lighting system into three separate LED modules, each emitting a different color temperature (CCT). By segmenting the lighting function into distinct modules with different CCT characteristics, the system can independently control brightness and color temperature through individual current control modules, thereby achieving versatile lighting control without requiring overly complex system architecture.
Solution Approach 2:
The patent implements dynamic control of both brightness and color temperature through a microcontroller that receives dimmer signals and dynamically adjusts the current supplied to each LED module. This dynamic adjustment capability allows the system to adapt to different lighting scenarios (e.g., warm lighting for relaxation, cool lighting for concentration) while maintaining a relatively simple overall structure through software-based control.
2Measurement precision
If multiple LED modules with different CCTs are used, then brightness and color temperature adjustment precision is improved, but the device complexity increases
Solution Approach 1:
The patent merges the control functions for multiple LED modules into a single microcontroller that processes dimmer signals and distributes appropriate current to each module. By combining the control logic in one centralized unit rather than using separate control circuits for each LED module, the system achieves precise independent control of brightness and color temperature while minimizing the increase in device complexity.
Solution Approach 2:
The patent controls the output of each LED module by changing the electrical current parameter supplied to it. By adjusting the current magnitude independently for each LED module with different CCTs, the system can precisely control both the overall brightness and the perceived color temperature of the combined light output, achieving high measurement precision through simple parameter adjustment.
3Ease of operation
If independent current control modules for each LED are implemented, then lighting control flexibility is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent designs the current control modules and microcontroller to serve multiple functions: they control both the brightness level and the color temperature by distributing current to different LED modules. This multi-functionality means that the same control circuitry handles both adjustment tasks, reducing the need for separate control mechanisms and thereby simplifying the manufacturing process while maintaining operational flexibility.
Solution Approach 2:
The system uses a single dimmer interface that the user interacts with, and the microcontroller automatically performs the complex task of translating this single input into appropriate current distribution across multiple LED modules. The control system essentially serves itself by autonomously calculating and implementing the required current adjustments, which simplifies the user interface and reduces manufacturing complexity.
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
Enables precise adjustments of brightness and color temperature, allowing for customizable lighting conditions, enhancing usability and design in various settings, and supporting remote control via wireless interfaces.
Implementation Method 1
a first light-emitting device that is configured to emit a first white light of a first correlated color temperature (CCT); a second light-emitting device that is configured to emit a second white light of a second CCT; a third light-emitting device that is configured to emit a third white light of a third CCT
Implementation Method 2
the light from the first, second, and third light-emitting devices mix to form a combined-light CCT
Data Source
AI summary
Disclosed embodiments provide a luminaire device including a power supply, and a three-way light module installed within a housing. The device includes an input end which is connected to the power grid, and an output end is connected to a three-way LED light module through the power supply and a control module, and an LED driver. The group corresponds to the series connection current module. The device also includes a dimmer, the output of the dimmer is connected to the power input of the lamp, and the power output is passed through a signal detection unit. A centralized control unit such as a microcontroller receives the adjustable signal of the dimmer, and the controller controls the current modules of the 3 LED modules. This enabled the feature of precise adjustments of brightness and correlated color temperature (CCT) of the device.