LED Series Module Dynamic Power Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional LED systems with parallel DC/DC Buck circuit designs are cost-prohibitive and inefficient due to fixed voltage and current, lacking adaptability to failing or inadequately operating modules and high temperature conditions.
Innovation Solution
A system with LED modules connected in series, monitored by a microcontroller that can bypass failing modules, modify voltage, and limit current based on temperature, using programmable power units to optimize operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a parallel DC/DC Buck circuit design with fixed voltage and current is used, then the LED system structure is simple, but the system cost increases and efficiency decreases
Solution Approach 1:
The patent implements dynamic power parameter adjustment by connecting LED modules in series with a single DC/DC converter that can dynamically modify voltage and current based on real-time operational conditions. This replaces the static parallel Buck circuit design with a dynamic series configuration, allowing the system to adapt power delivery to actual LED module needs, thereby improving efficiency while maintaining manageable complexity.
Solution Approach 2:
The system changes power parameters (voltage and current) dynamically based on operational conditions. The DC/DC converter adjusts output parameters in response to temperature sensors and failure detection circuits, modifying power delivery to match actual LED module requirements rather than providing fixed parameters, which resolves the efficiency problem.
2Device complexity
If fixed voltage and current are provided to LED modules, then the circuit design is simple, but the system lacks adaptability to failing or inadequately operating modules
Solution Approach 1:
The patent incorporates feedback mechanisms through temperature sensors and failure detection circuits that monitor LED module operational status. This feedback is fed to the DC/DC converter controller, which adjusts power parameters accordingly. This feedback loop provides adaptability to failing modules while keeping the control system relatively simple.
Solution Approach 2:
The system performs self-diagnosis and self-adjustment through integrated failure detection and temperature monitoring. When a module fails or operates inadequately, the system automatically detects the condition and adjusts power delivery without external intervention, providing adaptability with minimal additional control complexity.
3Device complexity
If fixed current is provided to LED modules, then the power supply design is simple, but the system cannot respond to high temperature conditions
Solution Approach 1:
Temperature sensors provide feedback on LED module thermal conditions to the DC/DC converter controller. When high temperature is detected, the controller automatically adjusts current delivery to prevent thermal damage. This feedback mechanism enables temperature response while keeping power supply control relatively simple.
Solution Approach 2:
The system takes preliminary anti-action by proactively monitoring temperature and preemptively adjusting current before thermal damage occurs. The DC/DC converter is configured to reduce current when temperature thresholds are approached, preventing high temperature conditions rather than responding after they occur.
Data Source
AI summary
According to an embodiment of the present disclosure, a plurality of light-emitting diode (LED) modules in series are monitored. When an LED module is detected as failing or operating inadequately, a bypass switch removes the particular LED module from the series and the voltage provided to the series is modified. When the LED modules are detected as having too high of a temperature, the current provided to the LED modules is limited.