Bell-Shaped Liquid Spray Assessment via High-Speed Imaging
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Solution Overview
Problem
Current methods for optimizing bell-shaped liquid sprays used in coating applications, such as those in car manufacturing, lack effective means to assess and improve the shape of the spray, which is crucial for uniform coating and material protection.
Innovation Solution
A method involving a high-speed camera to capture images of the liquid jets forming the bell-shaped spray, followed by image processing to derive shape parameters like diameter, length, width, and trajectory, which are then used to optimize the spray nozzle configuration and liquid properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a bell-shaped liquid spray is used for coating car body parts, then the aesthetic appearance and protective properties are improved, but the uniformity of the coating is difficult to achieve
Solution Approach 1:
The patent replaces mechanical measurement and assessment methods with optical imaging technology. A camera system captures images of the liquid spray, and image processing algorithms automatically analyze the spray shape and coating uniformity. This substitution enables precise, objective assessment of coating quality without complex mechanical measurement devices, thereby improving manufacturing precision while maintaining ease of manufacture.
Solution Approach 2:
The patent creates a visual copy of the liquid spray by capturing images with a camera. Instead of directly measuring physical properties of the spray, the system creates an optical replica (image) and analyzes this copy to assess spray shape and coating uniformity. This copying approach simplifies the measurement process and enables automated analysis of spray characteristics.
2Area of stationary object
If the spray nozzle rotates at high angular speed to deliver bell-shaped liquid spray, then the coating coverage is improved, but the measurement and assessment of spray shape becomes difficult
Solution Approach 1:
The patent replaces difficult mechanical measurement methods with optical imaging. The camera system captures images of the rotating spray, and image processing algorithms automatically determine spray shape parameters. This substitution overcomes the difficulty of measuring fast-moving, rotating sprays by using non-contact optical methods that can freeze and analyze the spray structure at high speeds.
Solution Approach 2:
The patent creates a visual copy of the rotating liquid spray through image capture. By freezing the spray in an image, the system enables analysis of the spray shape without the complexity of direct mechanical measurement of moving parts. The image serves as a static replica that can be analyzed to determine coverage area and spray characteristics.
3Measurement precision
If image processing is used to derive shape parameters of liquid jets, then the assessment accuracy is improved, but the processing complexity increases
Solution Approach 1:
The patent replaces complex manual measurement and analysis methods with automated image processing algorithms. The system uses software-based analysis to extract shape parameters from images, which provides higher precision while actually reducing operational complexity. The automated processing eliminates manual measurement errors and provides consistent, accurate results without requiring complex manual intervention.
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
This approach allows for accurate assessment and optimization of the bell-shaped liquid spray, enhancing the uniformity and quality of the coating applied, thereby improving the aesthetic appearance and protective properties of car body parts.
Implementation Method 1
The fast rotation of the spray nozzle makes the liquid coating undergo a strong centrifugal force which accelerates the liquid coating in a radial direction with respect to the rotation axis
Implementation Method 2
Apart from the centrifugal force, the liquid coating undergoes a plurality of further forces like a viscoelastic force, a surface tension force
Implementation Method 3
Apart from the centrifugal force, the liquid coating undergoes a plurality of further forces like a viscoelastic force, a surface tension force, a gravitational force, an aerodynamic drag force
Data Source
AI summary
Disclosed herein is a method for assessing a shape of a bell-shaped liquid spray, including the steps of operating a spray nozzle for delivering a bell-shaped liquid spray and capturing an image of a plurality of liquid jets forming the delivered bell-shaped liquid spray during operation of the spray nozzle, and a computer program product for assessing a bell-shaped liquid spray.