AI-Controlled LED Display Board Environmental Compensation
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Solution Overview
Problem
Display boards, particularly LED display boards, face significant challenges in maintaining image quality due to external environmental factors such as sunlight and artificial lighting, which cause color displacement, luminance variations, and white balance deviations, leading to reduced visibility and image deterioration.
Innovation Solution
An intelligent display board system equipped with sensors to detect illuminance, color coordinates, and temperature, and an AI control system that adjusts image data in real-time to compensate for external environmental influences, using processors to calculate and apply comprehensive adjustment values to improve image quality and visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a display board is installed outdoors to increase visibility and usage, then the display board can be viewed in various lighting conditions, but the image quality degrades due to light distortion from external influences such as sunlight and artificial lighting
Solution Approach 1:
The patent employs sensors to detect external lighting conditions (illuminance, color temperature) and feeds this information back to the control system, which automatically adjusts display parameters including white balance, luminance, and contrast to compensate for environmental light variations, thereby maintaining image quality across different installation locations
Solution Approach 2:
The system dynamically changes display parameters (white balance coordinates, luminance levels, contrast ratios) based on detected external lighting conditions. The control system adjusts these parameters in real-time to counteract the effects of varying external light sources, enabling reliable image quality whether the display is installed indoors or outdoors
2Illumination intensity
If the brightness of a display board is increased to improve visibility, then the display can be seen more clearly, but the display board is limited by light pollution regulations at night
Solution Approach 1:
The patent implements dynamic brightness control that automatically adjusts display luminance based on ambient light conditions detected by sensors. During daytime, the display operates at higher brightness levels for optimal visibility, while during nighttime it automatically reduces brightness to comply with light pollution regulations, eliminating the need for fixed high brightness settings
Solution Approach 2:
The system uses ambient light sensors to continuously monitor surrounding illumination levels and feeds this information back to the brightness control mechanism. This feedback loop enables automatic adjustment of display brightness to match environmental conditions, ensuring high visibility during daytime while automatically reducing output at night to meet regulatory requirements
3Measurement precision
If white balance is adjusted to match different sunlight conditions throughout the day, then color accuracy is maintained, but the complexity of the control system increases
Solution Approach 1:
The patent implements a self-adjusting white balance system that automatically detects external light color temperature and adjusts display white balance parameters without manual intervention. The control system autonomously measures ambient lighting conditions and modifies RGB channel balances to maintain color accuracy across different times of day, eliminating the need for manual white balance calibration
Solution Approach 2:
The system employs color temperature sensors to continuously monitor external lighting conditions and feeds this data back to the white balance control algorithm. Based on this feedback, the system automatically calculates and applies appropriate white balance corrections, maintaining measurement precision while managing control complexity through automated decision-making algorithms
4Reliability
If sensors and AI control systems are added to adjust for environmental factors, then image quality is maintained under varying conditions, but the device complexity increases
Solution Approach 1:
The patent integrates multiple functions into a single control system that simultaneously handles brightness adjustment, white balance correction, contrast optimization, and color temperature compensation. This multi-functional approach maintains image quality consistency under varying environmental conditions while minimizing the increase in device complexity by consolidating control functions rather than adding separate systems for each adjustment
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 effectively minimizes the impact of external sunlight and artificial lighting on LED display boards, enhancing visibility and image quality by adjusting luminance and color coordinates to maintain optimal display performance across varying environmental conditions.
Implementation Method 1
an illuminance sensor that detects an intensity of light
Implementation Method 2
a color coordinate sensor that detects color coordinates of a light source
Implementation Method 3
a temperature sensor that detects temperature
Implementation Method 4
The information of a display board is also reproduced in various colors by the combination of red, green, and blue of LED, which is a light-emitting element
Implementation Method 5
Rayleigh scattering occurs when the size of the particle is smaller than the wavelength of light. The scattering angle θ at which sunlight is scattered by gas molecules as it passes through the atmosphere has the formula 'light intensity ∝ 1/(wavelength) 4th power'
Implementation Method 6
Mie scattering refers to the scattering of light scattered from materials with particles larger than the wavelength. Since Mie scattering appears in water molecules of water vapor, fine dust, and pollen, it causes the sky to be hazy
Data Source
AI summary
Disclosed is an intelligent display board capable of increasing visibility by responding to external environmental factors in real time. The intelligent display board aims to improve a displayed image by minimizing differences in the characteristics of a display element (LED) according to the influence of external sunlight and artificial lighting and temperature. The white color of the display board is moved to be closed to a reference if deviating the reference so that low-level colors that are ignored by sunlight, etc. are darkened and the variance of recognizable colors is increased to make it easy to distinguish, thereby increasing the visibility of the display board. In addition, luminance varying according to temperature is adjusted to compensate for and adjust an image while automatically being applicable to a surrounding environment even with respect to temperature, thereby increasing the quality of an image displayed on the display board.