LED Lighting Apparatus Wall Switch Detection Circuit
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Solution Overview
Problem
Existing LED light control systems face challenges in accurately and efficiently detecting different types of wall switches, which can lead to performance issues and incorrect lighting adjustments.
Innovation Solution
A lighting apparatus with a control circuit that includes a time detector, a wall switch circuit, and a controller, which detects voltage time variations and adapts to different wall switch types to adjust current ratios and ignore certain operations based on predetermined time periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the control system detects all wall switch operations, then it can provide comprehensive control functionality, but it cannot distinguish between valid control operations and invalid interference operations
Solution Approach 1:
The system performs preliminary detection of voltage time variation characteristics before executing control operations. By pre-establishing detection mechanisms that analyze the temporal characteristics of voltage changes, the system can distinguish between valid wall switch operations and invalid interference operations, ensuring accurate response only to legitimate control inputs
Solution Approach 2:
The system implements feedback mechanisms that continuously monitor voltage time variation and adjust control responses accordingly. By analyzing the temporal characteristics of voltage changes in real-time, the system can identify patterns associated with valid wall switch operations versus interference operations, enabling intelligent discrimination and appropriate response
2Speed
If the system responds to all voltage variations, then it maximizes responsiveness, but it executes incorrect lighting adjustments due to interference operations
Solution Approach 1:
Before executing any lighting control operation, the system performs preliminary analysis of voltage time variation characteristics. This pre-detection mechanism evaluates whether the detected voltage variation corresponds to a valid wall switch operation pattern, ensuring that responsiveness is maintained only for legitimate control inputs while filtering out interference operations
Solution Approach 2:
The system employs feedback loops that continuously monitor voltage variations and provide real-time validation before executing control actions. By comparing detected voltage time variations against established patterns for valid operations, the system ensures high reliability in control accuracy while maintaining appropriate responsiveness to genuine user inputs
3Productivity
If the detection mechanism operates continuously, then it can detect all operations quickly, but it increases power consumption and processing overhead
Solution Approach 1:
The detection mechanism operates periodically rather than continuously, checking voltage time variations at specific intervals. This periodic operation maintains adequate detection speed for wall switch operations while significantly reducing power consumption and processing overhead compared to continuous monitoring, achieving an optimal balance between productivity and energy efficiency
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 enables smart and accurate detection and adaptation to various wall switches, preventing errors in lighting adjustments and improving overall performance by ignoring irrelevant operations.
Implementation Method 1
The rectifier converts an AC power to a DC power
Implementation Method 2
The time detector detects a voltage time variation of the DC power
Data Source
AI summary
A lighting apparatus includes a first LED module, a second LED module, a rectifier, a power circuit, a time detector, a wall switch circuit and a controller. The first LED module has a first light parameter. The second LED module has a second light parameter. The first light parameter is different from the second light parameter. The power circuit converts the DC power to a first driving current and a second driving current respectively supplied to the first LED module and the second LED module. The time detector detects a voltage time variation of the DC power. The controller is coupled to the wall switch circuit and the time detector for determining whether to adjust a current ratio between the first driving current and the second driving current according both the voltage time variation and the control signal.