LED Color Temperature Control Circuit for Dynamic Adjustment

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Solution Overview

Problem

Existing LED lighting devices can only output a single color temperature, requiring replacement of light-emitting diodes to change the color temperature, which is inconvenient and limits user flexibility.

Innovation Solution

A color temperature control device for LED lamps, comprising a power supply, operating device, processor, and power control circuit, that allows for real-time adjustment of color temperature in both full-on and dimming states using a wireless remote control or switch, enabling the lamp to change color temperature without needing to replace the LEDs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If LED light-emitting elements are used to provide light sources with different color temperatures, then the lighting device can output multiple color temperatures, but it requires replacement of the light-emitting diodes which is inconvenient and complex

Engineering Contradiction:

Improvecolor temperature adjustment capabilityVSAvoidconvenience of changing color temperature

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent applies dynamics by making the color temperature adjustable in real-time during operation. The control device receives control signals and dynamically adjusts the driving current parameters to change color temperature without requiring physical replacement of LED components. The lamp can switch between full-on state and dimming state with different color temperatures dynamically.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes electrical parameters (current amplitude and duty cycle) to achieve color temperature adjustment. The control device modifies the driving current parameters supplied to different LED assemblies, enabling color temperature variation without physical component replacement. This parameter-based control resolves the contradiction by making adjustment convenient while maintaining versatility.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

Engineering Contradiction:

Improvecolor temperature adjustment capabilityVSAvoidcomplexity of LED replacement process

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent introduces a control device as an intermediary between the user and the LED assemblies. This control device receives control signals and adjusts the driving current parameters to change color temperature, eliminating the need for direct physical replacement of LED components. The intermediary simplifies the system by centralizing control functionality.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces the mechanical replacement process with an electronic control system. Instead of physically removing and installing different LED assemblies, the system uses electronic signal processing to adjust color temperature by modifying current parameters supplied to fixed LED assemblies, thereby reducing mechanical complexity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If the lamp provides light sources with different color temperatures, then user flexibility is improved, but the control system becomes more complex requiring additional control circuits and processing

Engineering Contradiction:

Improvecolor temperature adjustment capabilityVSAvoidcomplexity of control system

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The control device is designed with multi-functionality to handle multiple operations through a unified control system. It can receive various control signals, manage full-on and dimming states, and adjust color temperature parameters all through one device, reducing the need for separate dedicated circuits for each function and simplifying overall system architecture.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The control device uses periodic pulse width modulation (PWM) signals to control the LED assemblies. By varying the duty cycle and amplitude of periodic control signals, the system can adjust color temperature and brightness levels efficiently using simple switching operations rather than complex continuous regulation circuits.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS11510295B1Color temperature control device for LED lamp

Publication Date: 2022.11.22 AIR COOL INDAL

AI summary

A color temperature control device for an LED lamp is disclosed. The color temperature control device is electrically connected to a lamp and comprises a power supply and a power control circuit. The processor can output a color temperature change processing signal. The power control circuit can control the lamp to change the color temperature in a full-on state according to the full-on state of the lamp and a color temperature change processing signal. The power control circuit can control the lamp to change the color temperature in a dimming state according to the dimming state of the lamp and a color temperature change processing signal. Thereby, the color temperature of the lamp can be changed in the full-on state of the lamp or in the dimming state of the lamp, thereby increasing the convenience of use.