Tyre Surface 3D Inspection Triangulation Angle Optimization
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Solution Overview
Problem
Current 3D image acquisition methods for tyre surfaces in production lines are cumbersome, time-consuming, and costly, with bulky apparatuses that slow down cycle times and increase production costs due to a large triangulation angle, which limits the frequency of image capture and requires larger, heavier equipment.
Innovation Solution
Reducing the triangulation angle between the optical axis and the propagation axis of the laser beam to between 5° and 25° allows for faster and more compact 3D image acquisition, enabling quicker processing of smaller, lighter images that can be easily moved within confined spaces, thereby reducing the overall dimensions and idle time of the apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a large triangulation angle is used for 3D image acquisition, then measurement precision is improved, but device complexity and weight increase
Solution Approach 1:
The patent changes the triangulation angle parameter from a large angle to a small angle (between 5° and 25°), which fundamentally alters the optical geometry. This parameter change enables the use of a compact linear laser source instead of a bulky conventional laser system, thereby reducing device complexity while maintaining measurement precision through the modified optical path
2Measurement precision
If a large triangulation angle is used, then measurement precision is improved, but productivity decreases due to slower image capture frequency
Solution Approach 1:
By changing the triangulation angle parameter to a small value, the patent enables the linear laser source to scan the tyre surface more rapidly. The modified optical geometry allows for faster line projection and image capture, increasing productivity while the triangulation processing maintains measurement precision
3Measurement precision
If a large triangulation angle is used, then measurement precision is improved, but the apparatus weight increases
Solution Approach 1:
The patent changes the triangulation angle to a small value, which enables the use of a linear laser source that is significantly lighter than conventional laser systems. This parameter change directly reduces the weight of the moving apparatus while maintaining the ability to acquire precise 3D images through the modified optical configuration
4Measurement precision
If a large triangulation angle is used, then measurement precision is improved, but loss of time increases due to longer idle time
Solution Approach 1:
By changing the triangulation angle parameter to a small value, the patent enables faster scanning and image acquisition. The modified optical geometry reduces the time required for each measurement cycle, decreasing idle time and improving overall process efficiency while maintaining measurement precision
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 enables the acquisition of 3D images within reduced time and costs, allowing for more efficient quality control with smaller, more agile equipment that can operate within the constraints of a production line environment, improving the speed and efficiency of tyre inspection.
Implementation Method 1
a laser source (20) adapted to emit a linear beam; a matrix camera (12) adapted to acquire a two-dimensional image of a portion of said surface and comprising a processing unit configured for identifying in said two-dimensional image a reflected laser line representing said linear beam reflected by said surface
Implementation Method 2
Sensor' means a set of photosensitive elements (called 'pixels') capable of transforming the incident light into an electric signal
Data Source
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AI summary
Apparatus (1) for the analysis of tyres, and related method, the apparatus comprising : a support frame (2) and an acquisition system (11) for acquiring three-dimensional images of a surface of a tyre, said acquisition system being mounted on said support frame and comprising : a matrix camera (12), having an optical axis (16), and a laser source (20) adapted to emit a linear beam having a propagation plane (21) and a propagation axis (23), wherein an acute angle (24) formed between said optical axis and said propagation axis is greater than or equal to 5° and less than or equal to 25°.