Checking Device for Circular Profile Surfaces
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Solution Overview
Problem
Existing methods for checking target objects with circular profile surfaces, such as separator rolls, face challenges in obtaining clear and accurate images due to differences in the number of pixels receiving electromagnetic waves at varying distances from the center, leading to blurred analytical images during rotation.
Innovation Solution
A checking device with n pieces of electromagnetic wave reception regions, each comprising m smaller regions, is arranged along the diameter of the circular profile surface or rotated at identical distances from the center, ensuring consistent image capture and reducing blur by aligning smaller regions with increasing distance from the center.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional TDI sensor with uniformly arranged pixels is used to check a rotating target object, then the device structure is simple, but the images obtained at different radial distances from the center have different numbers of pixels causing blur and reducing measurement precision
Solution Approach 1:
The patent applies local quality by making the pixel density vary at different radial distances from the center. Specifically, the number of pixels per unit radial distance is increased at larger distances to compensate for the geometric expansion of the circular profile surface. This creates a non-uniform pixel distribution where each radial region has appropriate pixel density for clear image capture, resolving the blur problem while maintaining manageable device complexity through systematic gradient design.
2Productivity
If the target object is rotated at higher speeds to increase productivity, then the checking speed improves, but the images become more blurred reducing measurement precision
Solution Approach 1:
The patent applies parameter changes by adjusting the pixel density parameter as a function of radial distance. The pixel distribution is optimized based on the rotational speed and geometric parameters of the target object. By pre-calculating and configuring the pixel density gradient according to the expected rotation conditions, the system maintains image clarity even at higher rotational speeds, thereby enabling increased productivity without sacrificing measurement precision.
3Area of stationary object
If electromagnetic wave sources are placed at the center axis to irradiate the circular profile surface, then the coverage is uniform, but the number of receiving pixels varies at different distances from the center causing image blur
Solution Approach 1:
The patent applies local quality by varying the pixel density at different radial positions in the receiving region. The pixel distribution is designed to match the geometric expansion of the circular profile surface, with higher pixel density at larger radial distances. This ensures that each region of the circular surface receives appropriate pixel resolution, maintaining image clarity across the entire coverage area while using a single centralized electromagnetic wave source.
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 configuration allows for highly accurate and quick detection of foreign substances on target objects by maintaining clear images across the entire region, even at higher rotation speeds, thereby enhancing the checking process.
Implementation Method 1
at least one electromagnetic wave source which irradiates the target object, which is being checked, with an electromagnetic wave that passes through the circular profile surface
Implementation Method 2
n pieces of electromagnetic wave reception regions for receiving the electromagnetic wave which has passed through the target object that is being checked
Data Source
AI summary
The present invention makes it possible to check a target object highly accurately and quickly. Each of the electromagnetic wave reception regions includes m pieces of smaller regions which are arranged along a diameter of a circle in a plan view of a circular profile surface.