LED Lamp Digital Dimming Over Power Lines Without Flicker
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Solution Overview
Problem
Existing LED dimming technologies using silicon-controlled rectifiers face compatibility issues with LED lamps, leading to flickering and reduced efficiency, and digital wired dimming solutions like DLT have struggled to transition to the market due to development challenges.
Innovation Solution
A digital dimming lighting system that includes a dimmer connected between the power input and LED lamp, converting dimming configuration information into a digital dimming signal and loading it onto the power signal to generate a dimming power signal, ensuring smooth, noiseless dimming without flickering and achieving 100% compatibility with various LED lamps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If silicon-controlled rectifier is used for LED dimming, then additional dimming signal line connection is avoided, but LED flickering and reduced efficiency occur at low brightness
Solution Approach 1:
The patent replaces the traditional silicon-controlled rectifier (SCR) mechanical dimming approach with a digital signal processing system. The dimming control is achieved through digital communication protocols that send dimming commands to the LED driver, which then adjusts the LED current precisely without the electrical interference and nonlinear characteristics that cause flickering in SCR-based systems.
Solution Approach 2:
The patent changes the dimming control parameter from analog voltage control (SCR phase angle) to digital signal control. By using digital communication to transmit dimming commands and the LED driver to convert these commands into precise current regulation, the system achieves smooth dimming without the electrical interference and nonlinear characteristics that cause flickering in traditional SCR-based systems.
2Ease of manufacture
If silicon-controlled rectifier dimmer is used, then installation is simple without additional signal lines, but compatibility with various LED lamps is poor
Solution Approach 1:
The patent creates a universal dimming system based on digital communication protocols that can work with various LED lamp types. The dimmer uses standard digital communication interfaces (such as DALI, DMX512, or custom protocols) that can be implemented across different LED products, allowing a single dimmer design to control multiple LED lamp types without requiring model-specific hardware.
3Reliability
If digital wired dimming solution DLT is implemented, then compatibility and dimming quality are improved, but development difficulty increases
Solution Approach 1:
The patent introduces a standardized digital communication protocol as an intermediary between the dimmer and LED lamps. This protocol layer simplifies the development process by providing a well-defined interface specification that both dimmer and LED driver manufacturers can implement, reducing the need for custom point-to-point development while maintaining high compatibility and dimming quality.
Data Source
AI summary
The present disclosure relates to a dimmable LED lamp illumination system. The dimmable LED lamp illumination system includes: a dimmer and an LED lamp. The dimmer is connected in series between a power input end and the LED lamp, and is used for loading a digital dimming signal onto a power signal, so as to generate a dimming power signal. The LED lamp receives the dimming power signal, demodulates the digital dimming signal, and adjusts the brightness of the LED lamp based on the demodulated digital dimming signal. By using the dimmable LED lamp illumination system of the present disclosure, the deployment of a dimming system is simpler, and the transmission of a digital dimming signal is more stable.