Four-Wheel Alignment Imaging Layout for Faster Setup
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Solution Overview
Problem
Existing four-wheel aligners suffer from long detection times and low detection efficiency due to the need for precise positioning of image acquisition devices and vehicles, which increases adjustment time.
Innovation Solution
A four-wheel aligner system comprising first and second detection devices on the left and right sides of the vehicle, capturing image information from calibration members on all four wheels, with a control device analyzing this information to reduce mounting accuracy requirements and streamline the detection process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If precise positioning of image acquisition devices and vehicles is required, then measurement precision is improved, but detection time increases and productivity decreases
Solution Approach 1:
The patent applies preliminary action by pre-establishing coordinate transformation relationships and calibration models before actual alignment detection. The system performs preliminary calibration of the image acquisition devices and pre-processes the coordinate system transformations, so that during actual detection, only image capture and data substitution are needed, dramatically reducing detection time while maintaining precision
Solution Approach 2:
The patent uses calibration members with specific patterns (such as chessboard patterns or circular markers) that create standardized image copies or projections. These calibrated patterns serve as reference copies that can be rapidly recognized and measured, eliminating the need for complex real-time positioning calculations while preserving measurement accuracy
2Measurement precision
If precise positioning of image acquisition devices and vehicles is required, then measurement precision is improved, but device complexity and adjustment requirements increase
Solution Approach 1:
The patent implements self-service through automatic coordinate recognition and self-calibration features. The image acquisition devices automatically detect the calibration member patterns, automatically compute transformation parameters, and self-adjust the coordinate systems without requiring manual positioning or complex adjustment procedures by operators
Solution Approach 2:
The patent transforms the problem from requiring precise physical positioning parameters to using flexible image processing parameters. By changing from rigid mechanical positioning requirements to flexible digital coordinate transformation parameters, the system maintains measurement precision while greatly simplifying device mounting and adjustment
3Productivity
If traditional single-side detection is used, then device complexity is reduced, but detection efficiency and measurement comprehensiveness deteriorate
Solution Approach 1:
The patent applies segmentation by dividing the detection system into multiple independent image acquisition devices positioned at different locations (front, rear, left, right). Each device independently captures images of relevant calibration members, and the results are integrated by the control device. This segmented approach enables parallel detection of all four wheels simultaneously, dramatically improving efficiency while keeping each individual device relatively simple
Data Source
AI summary
The present application provides a four-wheel aligner, which includes a first detection device, a second detection device and a control device; the first detection device includes a first position detection module and a first image acquisition module, the second detection device includes a second position detection module and a second image acquisition module, the first image acquisition module and the second image acquisition module are respectively configured to acquire image information on four wheels, in the first position detection module and the second position detection module, one includes a fifth calibration member, and another one includes an image acquisition member, the image acquisition member is configured to capture image information of the fifth calibration member; the control device analyzes the four-wheel alignment information of the vehicle according to the acquired image information.