Power Supply Adjustment System for LED Lighting
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Solution Overview
Problem
Conventional methods for adjusting output current variations in power supply boards are cumbersome and lack accuracy, requiring manual adjustment of volume resistors and resulting in non-uniform illuminance in LED lighting systems.
Innovation Solution
A power supply adjustment system comprising an electronic load with variable load voltage, an information processing apparatus that controls the load voltage and output current, and a power supply board with a storage medium and feedback control unit to set and maintain target current values, enabling precise adjustment of output current.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual adjustment of volume resistor is performed while viewing an ammeter, then output current can be adjusted, but the adjustment process becomes troublesome and time-consuming
Solution Approach 1:
The patent replaces the manual mechanical adjustment of volume resistors with an automated electronic control system. The information processing apparatus automatically adjusts the output current of the power supply board by controlling the electronic load and communicating with the power supply board's control unit, eliminating the need for manual resistor adjustment while viewing an ammeter.
Solution Approach 2:
The power supply board includes an internal control unit that can automatically adjust its own output current based on instructions from the information processing apparatus. The system performs self-adjustment through automated feedback control, eliminating the need for external manual intervention and reducing adjustment time.
2Productivity
If current is adjusted at an arbitrary dimming rate with preset conditions, then adjustment can be performed quickly, but adjustment accuracy deteriorates
Solution Approach 1:
The patent implements a feedback control mechanism where the information processing apparatus measures the actual output current using an ammeter and compares it with the target current value. Based on this feedback, the system automatically adjusts the power supply board's output current to achieve both speed and accuracy in the adjustment process.
Solution Approach 2:
The system dynamically adjusts the dimming rate and control parameters during the adjustment process. Rather than using fixed preset conditions, the information processing apparatus adapts the adjustment strategy based on real-time measurements, allowing the system to maintain both speed and accuracy by optimizing parameters during operation.
Data Source
AI summary
Provided is a power supply adjustment system including: an electronic load whose load voltage is variable; a power supply board that supplies the electronic load with current; and an information processing apparatus that controls the load voltage of the electronic load and the output current of the power supply board to the electronic load on the basis of a current value in the load voltage, in which the information processing apparatus includes a control unit that sets a plurality of load voltages in a predetermined range as the load voltage of the electronic load and sets a correction current value for adjusting the output current to a preset target current value for each of the plurality of load voltages.