LED Lighting Apparatus with TRIAC Dimming and Wireless Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current lighting systems lack flexibility and efficiency in controlling light output and color temperature, particularly in LED-based systems, which limits user satisfaction and adaptability to different lighting needs.
Innovation Solution
A lighting apparatus incorporating an LED module, constant current source, bridge rectifier, silicon-controlled rectifier, wireless module, and detector that converts alternating current to direct current and adjusts driving current based on external control signals and chopping signals, enabling dynamic dimming and color temperature adjustments through a combination of PWM and TRIAC signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional lighting systems are used, then the structure is simple, but the control flexibility and efficiency are insufficient
Solution Approach 1:
The lighting system is divided into independent functional modules: LED modules with different color temperatures (warm white, cool white, yellow), constant current sources for each module, wireless communication module, and control unit. This segmentation allows flexible combination and independent control of each lighting zone, achieving adaptability without excessive overall complexity.
Solution Approach 2:
The control unit serves multiple functions: receiving wireless control signals, processing dimming requests, managing color temperature adjustments, and coordinating multiple constant current sources. The system can operate in different modes (single color, mixed color, dimming, timing) through a unified control architecture, reducing the need for separate control circuits for each function.
2Adaptability or versatility
If LED modules with multiple color temperatures are used, then the lighting quality and adaptability are improved, but the device complexity increases
Solution Approach 1:
Multiple LED modules with different color temperatures are electrically connected in parallel to the same constant current source. This merging approach allows a single current source to drive multiple LED types, reducing the total number of current sources needed while maintaining the ability to independently control each color temperature zone through separate control signals.
Solution Approach 2:
Each LED module is designed with specific local characteristics (different color temperatures: warm white 2700K, cool white 6500K, yellow 5600K) to suit different lighting scenarios. The control system can selectively activate or adjust the intensity of specific modules based on local lighting requirements, achieving high adaptability without requiring all modules to be identical.
3Use of energy by moving object
If precise current management is implemented, then the light quality and energy efficiency are improved, but the control system complexity increases
Solution Approach 1:
The control unit receives feedback from the lighting system status and adjusts the dimming control signals accordingly. The system monitors the actual lighting output and energy consumption, comparing it with target values, and automatically adjusts the constant current sources to optimize energy efficiency while maintaining desired light quality. This closed-loop control achieves energy efficiency without requiring overly complex manual intervention circuits.
Solution Approach 2:
The system implements periodic dimming and timing control, where the constant current sources are adjusted in periodic cycles based on preset schedules or sensor inputs (such as ambient light sensors). This periodic adjustment optimizes energy consumption during different times of day or usage patterns while using relatively simple timing circuits rather than continuous complex control.
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 flexible and efficient control over light output and color temperature, enhancing user satisfaction by allowing for remote or manual adjustment of lighting conditions, reducing energy consumption, and improving light quality through precise current management.
Implementation Method 1
The bridge rectifier converts the alternating current power of a first frequency to a direct current power with a second frequency. The second frequency is two times of the first frequency.
Implementation Method 2
The silicon-controlled rectifier is connected to the alternating current power and the bridge rectifier for adjusting the direct current power with a chopping signal.
Implementation Method 3
A lighting apparatus incorporates an LED module, constant current source, bridge rectifier, silicon-controlled rectifier, wireless module, and detector that converts alternating current to direct current and adjusts driving current
Data Source
AI summary
The lighting apparatus includes a LED module, a constant current source, a bridge rectifier, a silicon-controlled rectifier, a wireless module and a detector. The lighting apparatus receives an alternating current power to generate a light. The constant current source provides a driving current to the LED module. The bridge rectifier converts the alternating current power of a first frequency to a direct current power with a second frequency. The second frequency is two times of the first frequency. The silicon-controlled rectifier is connected to the alternating current power and the bridge rectifier for adjusting the direct current power with a chopping signal. The wireless module receives an external control signal. The detector generates a dimming control signal supplied to the constant current source to adjust the driving current according to both the external control signal and the chopping signal.