Triac and Wireless Dimming Control for LED Lighting
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Solution Overview
Problem
Existing lighting control systems face challenges in providing flexible and compatible control solutions for LED lighting, particularly in indoor applications, where lamp mismatch issues arise due to triac dimmers, and there is a need for improved control over brightness, color temperature, and RGB output.
Innovation Solution
A lighting device incorporating a triac and wireless dimming control system, where a microcontroller and wireless communication interface work in conjunction with an LED driver and dimming circuit to receive input signals from a triac dimmer, allowing for seamless transition between triac and wireless control of LED lighting, enabling control over brightness, color temperature, and RGB output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If triac dimmer control is used for LED lighting, then compatibility with existing wall-mounted controls is improved, but lamp mismatch issues and control precision deteriorate
Solution Approach 1:
The patent introduces a triac as an intermediary component between the existing wall-mounted dimmer and the LED driver. The triac receives the dimmer signal and conditionally passes it to the LED driver based on signal threshold detection, thereby mediating the interaction between incompatible systems and preventing lamp mismatch issues while preserving control precision.
Solution Approach 2:
The patent replaces the direct electrical connection between the wall-mounted dimmer and LED driver with a microcontroller-based wireless control system. This substitution eliminates the lamp mismatch problems caused by direct triac dimming while maintaining compatibility through the triac interface, and enables precise control through digital signal processing.
2Adaptability or versatility
If wireless control is added to provide flexible control options, then control versatility is improved, but device complexity increases
Solution Approach 1:
The patent implements a universal control system where the same LED driver and control circuit can operate with multiple control methods (triac dimmer, wireless control) by detecting signal types and switching between control modes. This multi-functionality approach provides control flexibility without requiring separate dedicated circuits for each control method, thereby limiting the increase in device complexity.
3Measurement precision
If signal threshold detection is implemented to switch between control modes, then control precision is improved, but device complexity increases
Solution Approach 1:
The patent implements partial signal processing by detecting only the threshold level of incoming signals rather than analyzing the complete signal waveform. This partial action approach provides sufficient precision for mode switching while avoiding the complexity of comprehensive signal analysis, thereby achieving a balance between measurement precision and device complexity.
Data Source
AI summary
Disclosed embodiments provide a lighting device that is controllable both by a triac device as well as by wireless control. When intelligent lamps are installed in indoor applications, there can be technical problems of lamp mismatch due to a triac dimmer. Disclosed embodiments provide a compatibility device. In disclosed embodiments, when the triac dimmer is in high output, at or above a predetermined threshold, a wireless controller can control the brightness, color temperature and RGB (red-green-blue) output of coupled lamps. When the triac dimmer is below the predetermined threshold, the wireless controller is not controlling dimming, the triac dimmer can control the brightness and/or color temperature of coupled lamps (LED lights).