Pulse LED Power Regulation for High-Intensity Machine Vision Lighting
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Solution Overview
Problem
Existing machine vision systems face challenges with inadequate lighting, leading to issues such as motion blur and inefficiencies in image capture due to varying power requirements, which can strain standard power supplies and increase safety risks.
Innovation Solution
A dual mode power regulation system (DMPRS) with a passive mode switching circuit (PMSC) and a selective pulse light emitting diode system (SPLEDS) that includes an energy storage device to provide high-intensity light pulses while protecting the power supply and reducing space and safety hazards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If high-intensity lighting is used to improve image quality and reduce motion blur, then illumination intensity is improved, but power consumption increases beyond standard power supply ratings
Solution Approach 1:
The patent implements periodic action by switching between two operational modes: a high-power mode that delivers intense light pulses for image capture, and a low-power steady-state mode that consumes minimal power. The mode switching circuit automatically transitions between these states based on power availability, enabling the system to provide high illumination intensity only when needed while maintaining acceptable power consumption levels during normal operation.
2Illumination intensity
If high-power mode is activated to provide sufficient lighting, then illumination intensity is improved, but power supply safety deteriorates due to exceeding power ratings
Solution Approach 1:
The patent employs feedback through a mode switching circuit that continuously monitors power consumption and automatically transitions between high-power and low-power modes. This feedback mechanism ensures that the power supply operates within its rated capacity by reducing power consumption when the high-power mode would otherwise exceed safety limits, thus maintaining both illumination quality and power supply reliability.
3Device complexity
If standard power supply is used to reduce cost and simplify system, then device complexity is reduced, but illumination intensity becomes insufficient for quality image capture
Solution Approach 1:
The patent applies dynamics by implementing a dynamic mode switching mechanism that adapts the power consumption characteristics of the lighting system to match the demands of image capture. The system dynamically transitions between high-power mode (providing sufficient illumination for quality images) and low-power steady-state mode (maintaining system operation with standard power supply). This dynamic adaptation allows a standard power supply to support both high-intensity lighting when needed and normal operation during other times, effectively resolving the contradiction between power supply capacity and illumination requirements without increasing system complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system efficiently captures high-resolution images by providing high-intensity light pulses while maintaining steady-state operation, protecting the power supply and reducing space and safety risks, thus enhancing machine vision performance.
Implementation Method 1
an energy storage device configured to store energy from a power supply
Implementation Method 2
selective pulse light emitting diode system (SPLEDS) that includes an energy storage device and LED module
Implementation Method 3
light emitting diode system
Data Source
AI summary
Apparatus and associated methods relate to a dual mode power regulation system (DMPRS) having an energy storage device configured to store energy from a power supply. In an illustrative example, a DMPRS may include a passive mode switching circuit (PMSC). The PMSC, for example, may regulate a current output from the energy storage device to a passive electric load (PEL). For example, in a high power mode, the PMSC regulates the current output to be greater than a power rating of the power supply. When the energy stored in the energy storage device is dissipated, for example, the PMSC may passively and automatically transition to a steady-state mode. For example, in the steady-state mode, the output power may be maintained above a minimum operating current such that the PEL may operate normally. Various embodiments may advantageously provide an energy pulse higher than the power rating to the PEL.