LED Dimming System with Segmented Control Circuits
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Solution Overview
Problem
Conventional light emitting devices using LEDs face challenges in adjusting luminance uniformly and efficiently, as existing dimming methods often result in uneven light distribution and fixed luminance adjustments, necessitating a new system to control LED luminance effectively.
Innovation Solution
A dimming system comprising a signal generating circuit, a first dimming circuit, and a second dimming circuit that generates driving and dimming signals to adjust LED luminance levels, allowing for multiple state switching and fine-tuning between luminance levels using a luminance-adjusting switch, remote controller, or rotation switch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a chain-type switch is used to adjust luminance by switching on/off multiple light bulbs, then luminance adjustment is achieved, but uneven light source distribution occurs and adjustment is fixed
Solution Approach 1:
The patent segments the luminance control into two independent parts: a chain-type switch for selecting discrete luminance levels (first, second, third levels) and a rotation switch for continuous fine-adjustment within each level. This segmentation allows the chain switch to control overall brightness stages while eliminating the need to switch bulbs on/off, maintaining uniform LED operation and thus uniform light distribution.
2Adaptability or versatility
If multiple light bulbs are switched on/off to adjust luminance, then luminance levels are changed, but the adjustment is fixed and cannot be fine-tuned
Solution Approach 1:
The patent introduces a rotation switch that provides dynamic, continuous luminance adjustment within each discrete level selected by the chain-type switch. This dynamic component allows users to fine-tune luminance by rotating the switch to any position between minimum and maximum values within a selected level, transforming the fixed adjustment into a flexible, multi-stage system that combines discrete selection with continuous variation.
3Use of energy by moving object
If conventional light bulbs are replaced with LEDs, then energy efficiency is improved, but existing lamp base architecture cannot effectively control LED luminance
Solution Approach 1:
The patent designs a universal dimming system that integrates both a chain-type switch and a rotation switch within the existing lamp base architecture. This multi-functional control system can accommodate different LED configurations and luminance requirements while maintaining compatibility with standard lamp bases. The chain switch provides discrete level selection and the rotation switch provides continuous adjustment, creating a versatile control mechanism that works with various LED implementations.
Data Source
AI summary
A dimming system includes a signal generating circuit, a first dimming circuit and a second dimming circuit. The signal generating circuit generates the driving signal according to the input signal, and switches the driving signal between multiple states according to the switch signal. The first dimming circuit generates the dimming signal to adjust the luminance of the LED device according to the driving signal. When the driving signal is switched from the first states to the second states, the dimming signal is changed by the first dimming circuit so that the luminance of the LED device is adjusted from the first luminance to the second luminance. The second dimming circuit adjusts the input signal according to the control signal so that the dimming signal is adjusted and the luminance of the LED device is between the first luminance and minimum luminance, or between the second luminance and minimum luminance.