LED Load Regulation Calibration for Wiring Voltage Drop Compensation
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Solution Overview
Problem
LED light sources controlled using voltage load control techniques experience varying intensities due to differences in electrical wiring lengths between the LED driver and the light source, leading to inconsistent light output across multiple installations.
Innovation Solution
A load regulation device with a calibration system that adjusts the output voltage based on feedback from a calibration device near the LED light source, ensuring the load voltage reaches a predetermined level, thereby maintaining consistent intensity across different installations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If voltage load control technique is used to control LED light sources, then the LED driver can regulate voltage to a particular value, but the light intensity varies due to differences in electrical wiring lengths between the LED driver and the light source
Solution Approach 1:
The patent implements a feedback mechanism where the LED driver measures the actual voltage across the LED light source and adjusts the output voltage accordingly. The controller receives feedback about the load voltage and modifies the output voltage to compensate for voltage drops in the electrical wiring, ensuring the LED light source receives the correct voltage regardless of wiring length.
Solution Approach 2:
The system performs self-calibration by automatically measuring the voltage across the LED light source and adjusting its own output without external intervention. The LED driver independently determines the appropriate output voltage level based on feedback about the actual voltage at the load, enabling the system to compensate for installation variations autonomously.
2Illumination intensity
If the output voltage of the LED driver is increased to compensate for long wiring, then the light intensity at the LED light source can be maintained, but the voltage magnitude at the LED driver output becomes excessive
Solution Approach 1:
The feedback mechanism allows the LED driver to precisely control the output voltage by measuring the actual voltage at the LED light source and making incremental adjustments. This prevents excessive voltage output while ensuring adequate voltage delivery, as the system only increases voltage enough to compensate for the actual wiring losses rather than using a fixed conservative margin.
Solution Approach 2:
The system dynamically adjusts the output voltage based on real-time feedback about the actual voltage at the load. Rather than using a static voltage level or fixed compensation margin, the LED driver continuously adapts its output to match the precise requirements of the installation, optimizing power delivery for each specific wiring configuration.
3Illumination intensity
If calibration is performed for each individual installation to ensure correct voltage delivery, then light intensity consistency can be achieved, but the calibration time and complexity increase
Solution Approach 1:
The system performs automatic self-calibration without requiring manual intervention or external calibration equipment. The LED driver independently measures the voltage across the LED light source and adjusts its output through an automated feedback loop, eliminating the need for technician calibration while ensuring accurate voltage delivery.
Solution Approach 2:
The automated feedback mechanism enables rapid calibration by continuously monitoring the voltage at the LED light source and making real-time adjustments. This feedback-driven approach is faster and more accurate than manual calibration methods, as it automatically converges on the correct voltage level without requiring technician judgment or iterative manual adjustments.
Data Source
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AI summary
A load regulation device for controlling the amount of power delivered to an electrical load may be able to calibrate the magnitude of an output voltage of the load regulation device in order to control the magnitude of a load voltage across the electrical load to a predetermined level. The load regulation device may receive the feedback from a calibration device adapted to be coupled to load wiring near the electrical load. The feedback may indicate when the magnitude of the load voltage across the electrical load has reached a predetermined level. The load regulation device may gradually adjust the magnitude of the output voltage, receive the feedback from the calibration device, and then use the feedback to determine the magnitude of the output voltage corresponding to when the magnitude of the load voltage across the electrical load has reached the predetermined level.