Lighting Power Controller Switching for Overheat Fault Detection
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Solution Overview
Problem
Current lighting device power controllers tend to malfunction due to overheating or aging, leading to decreased brightness, flickering, or potential fire hazards, as they are not designed to address these issues effectively.
Innovation Solution
A lighting device power supplying system with a switching mechanism, comprising multiple power controllers with driving, sampling, and control modules that detect abnormal voltage oscillations and temperatures, allowing for switching to another controller when issues are detected, and incorporating noise feature detection to prevent false triggering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If a single power controller is used to drive the lighting module continuously, then the lighting device can operate without interruption, but the power controller will overheat and malfunction due to prolonged operation
Solution Approach 1:
The system divides the power control function into multiple independent power controllers (first power controller and second power controller). Each controller can independently drive the lighting module, allowing the system to segment the continuous operation workload among multiple units, thereby preventing any single controller from overheating while maintaining continuous lighting operation.
2Duration of action of stationary object
If the power controller operates for extended periods, then the lighting device remains continuously lit, but the power controller experiences aging and malfunction
Solution Approach 1:
The system dynamically switches between the first and second power controllers based on their operational status. When one controller malfunctions or overheats, the system automatically transitions to the other controller, enabling adaptive load distribution that prevents prolonged operation of any single controller and maintains system reliability.
3Object-affected harmful factors
If the system switches to another power controller when abnormal conditions are detected, then the lighting device can avoid fire hazards from overheating, but the system complexity increases due to switching mechanism
Solution Approach 1:
The system incorporates a feedback mechanism where the control module continuously monitors the driving voltage output by the power controller. When abnormal conditions (such as overheating or malfunction) are detected through voltage sampling and analysis, the system automatically triggers a switch to the other power controller, thereby eliminating overheating hazards while maintaining relatively simple system architecture through intelligent control.
Data Source
AI summary
A lighting device power supplying system having switching mechanism includes a plurality of power controllers and each of the power controllers includes a driving module, a sampling module and a control module. The driving module generates a driving voltage to drive a lighting module. The sampling module samples the driving voltage to generate a sampled voltage. The control module compares the sampled voltage with a default oscillation frequency range and a default oscillation amplitude threshold. The control module generates an abnormal detecting result when the oscillation frequency of the sampled voltage is not within the default oscillation frequency range or when the oscillation amplitude of the sampled voltage exceeds the default oscillation amplitude threshold.