Mini LED TV Control System with FPGA Voltage Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing mini LED TV systems face inefficiencies due to fixed voltage output, leading to energy wastage and increased costs, as they struggle to provide optimal voltage to thousands of LEDs with varying voltages and line losses, resulting in poor energy efficiency and design complexities.
Innovation Solution
A closed-loop control system utilizing an FPGA algorithm, which adjusts the power supply voltage and simplifies current detection by monitoring total current input into a quarter area of the lamp board, ensuring all LEDs reach a set current value, thereby outputting the appropriate voltage for improved energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed voltage output system is used to power all LED partitions, then the system design is simple, but energy efficiency deteriorates due to line loss and voltage differences across partitions
Solution Approach 1:
The patent divides the single power supply system into multiple independent power supply modules, each serving a specific partition. This segmentation allows each module to provide optimized voltage and current to its designated LEDs, reducing line loss and improving energy efficiency while maintaining manageable system complexity through modular design.
Solution Approach 2:
The patent implements dynamic voltage and current adjustment capabilities in the power supply system. Each power supply module can dynamically adapt its output parameters based on the specific requirements of its partition, LED aging characteristics, and temperature conditions, thereby optimizing energy efficiency without requiring overly complex fixed infrastructure.
2Reliability
If the output voltage is increased to compensate for line loss in distant partitions, then all LEDs can be fully lit, but energy efficiency deteriorates due to excess voltage consumption and heat generation
Solution Approach 1:
The patent applies local quality by providing each partition with a dedicated power supply module that delivers voltage and current optimized for that specific location's requirements. This eliminates the need to increase voltage system-wide to compensate for line loss in distant partitions, as each partition receives precisely the power it needs, reducing energy waste and heat generation while ensuring reliable LED operation.
Solution Approach 2:
The patent incorporates feedback mechanisms where each power supply module monitors its output and the actual power consumption of its partition. This feedback enables real-time adjustment of voltage and current parameters, ensuring that LEDs receive adequate power for reliable operation while minimizing excess voltage that would otherwise be wasted as heat, thereby improving energy efficiency.
3Adaptability or versatility
If a fixed voltage power supply is used to accommodate high-voltage LEDs, then all LEDs can be powered, but energy efficiency deteriorates due to excess voltage consumption by low-voltage LEDs
Solution Approach 1:
The patent segments the power supply system into multiple independent modules, each capable of providing different voltage and current parameters. This allows each module to be optimized for specific LED batches or partitions with different electrical characteristics, accommodating voltage variations across different LED batches without forcing a high-voltage solution on all LEDs, thereby preventing energy waste while maintaining versatility.
Solution Approach 2:
The patent implements parameter changes by allowing each power supply module to independently adjust its output voltage and current based on the specific requirements of its partition. This enables the system to adapt to different LED batches with varying voltage characteristics, providing precise parameter matching that improves energy efficiency while maintaining broad compatibility across different LED types and batches.
Data Source
AI summary
A mini LED television control system and method to reduce loss includes a power supply used for supplying power to a backlight board after a voltage is adjusted; a control board connected to the power supply, the control board including an FPGA used for detecting a current value and controlling a power supply output voltage, an analog-to-digital conversion chip used for collecting the voltages of sampling circuits, and a plurality of sampling circuits connected to a plurality of light boards and used for collecting voltages of the light boards; constant current ICs disposed on the light boards and used for providing light bar voltages and sending brightness information; and a mainboard connected to the control board and used for enabling and synchronizing backlight brightness signals. The control board converts brightness information sent by the mainboard and then sends the information to the constant current ICs on corresponding light boards.