Liquid Level Detection via Image Processing
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Solution Overview
Problem
Conventional methods for determining liquid levels, such as visual observation and outdoor equipment, suffer from inaccuracy due to human error and equipment degradation when exposed to water and harsh conditions.
Innovation Solution
A liquid level detection method utilizing image-processing techniques, capturing and processing images of liquid surfaces with graduation markings to calculate levels based on inherent characteristics and relative dimensions, eliminating the need for direct contact and reducing installation complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If visual observation is used to determine liquid levels, then no special equipment is needed, but measurement accuracy deteriorates due to human error and inexperience
Solution Approach 1:
The patent replaces manual visual observation with an automated image processing system that captures images of the liquid surface and structural surface with graduation markings, then uses computer algorithms to automatically calculate the liquid level, eliminating human error while maintaining operational simplicity
Solution Approach 2:
The patent creates a digital copy of the physical measurement scenario by capturing an image of the liquid surface and graduation markings, then processes this digital copy to determine the liquid level, replacing direct human observation with automated image analysis
2Measurement precision
If conventional outdoor equipment is used to automatically detect water levels, then measurement accuracy improves, but installation and calibration become difficult due to equipment size
Solution Approach 1:
The patent replaces complex mechanical water level detection equipment with a streamlined system consisting of an image capturing device and processing unit that takes photographs of the water surface and graduation markings, dramatically simplifying installation while maintaining measurement accuracy
Solution Approach 2:
The patent creates a digital representation of the water level measurement by capturing images and processing them computationally, eliminating the need for large physical measurement equipment and complex calibration procedures
3Productivity
If conventional equipment is placed in contact with water for outdoor measurement, then measurement capability is achieved, but equipment reliability deteriorates due to degradation and damage from water exposure and flood forces
Solution Approach 1:
The patent introduces an intermediary approach by using image capturing devices positioned above the water surface to photograph the water level and graduation markings, allowing measurement capability while completely avoiding direct water contact and associated damage risks
Solution Approach 2:
The patent replaces physical contact-based measurement mechanisms with optical imaging and computational analysis, enabling measurement functionality while eliminating exposure to water degradation and flood forces
Data Source
AI summary
A liquid level detection method includes capturing an image of a liquid surface, a structural surface, and graduation markings provided on the structural surface using an image-capturing device to thereby obtain an initial image. Subsequently, the initial image is processed so as to generate a processed image, and a level reference value of the liquid surface is obtained from the processed image. The level reference value represents a height of the liquid surface in terms of inherent characteristics of the processed image. Lastly, a liquid level of the liquid surface is calculated based on a relative proportional relation among the level reference value, an overall height of the processed image in terms of the inherent characteristics of the processed image, and dimensions of any one of the initial and processed images relative to the graduation markings.