LED Driving Device with Segmented Groups for Power Capacity Minimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing LED driving devices face challenges in minimizing power supply capacity, leading to increased costs, particularly when LED elements undergo abnormal operation due to heat or other factors, resulting in full power mode activation and potential failure to recover.
Innovation Solution
The LED driving device is configured with multiple displaying groups, each with built-in light emission controlling elements, a power supplying section, switching sections using static relays, and a controlling section that monitors and manages power distribution to minimize power supply capacity by selectively connecting groups and performing recovery operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power supply capacity is set large to handle abnormal operation modes, then the reliability is improved, but the cost increases
Solution Approach 1:
The controlling section performs preliminary detection of the power supply output value immediately after power-on, before abnormal operation modes can occur. This early detection allows the system to prevent full power mode activation and its associated risks, while still maintaining the capability to handle abnormalities when they occur. The switching sections are pre-configured to enable selective connection of displaying groups, allowing gradual power application.
Solution Approach 2:
The controlling section continuously monitors the power supply output value and uses this feedback to make real-time decisions about connecting displaying groups. When the output value is abnormal, the system provides feedback to prevent further connections, avoiding the need for oversized power supply capacity while maintaining reliability through adaptive control.
2Illumination intensity
If all LED elements are fully lit in maximum operating mode, then the brightness is improved, but the power consumption increases
Solution Approach 1:
The displaying section is divided into multiple displaying groups that can be independently controlled. Instead of all LED elements being fully lit simultaneously, the system selectively connects individual displaying groups based on power supply conditions. This segmentation allows brightness to be distributed across different groups at different times, maintaining overall illumination while controlling peak power consumption.
Solution Approach 2:
The system implements periodic detection of power supply output values and periodic switching between displaying groups. By alternating between different groups in a periodic manner rather than maintaining all groups at full brightness continuously, the system achieves sustained illumination while reducing average power consumption and preventing thermal buildup.
Data Source
AI summary
An LED-driving device includes a displaying section including a plurality of displaying groups, each composed of a plurality of connected LED elements, each with a built-in light emission-controlling element, a power-supplying section configured to provide a supply of an electric power to the displaying section, switching sections configured to selectively make or break connections between the power-supplying section and those displaying groups respectively, and a controlling section configured to make a decision as to whether, when the power-supplying section is powered on, an output value from the power-supplying section is normal or not, and as a result of determining that the output value from the power-supplying section is normal, perform such a control of the connections between the power-supplying section and those displaying groups as to enable the switching sections to in turn connect supplies of the electric power from the power-supplying section to those displaying groups, respectively.