Four-Wheel Aligner Calibration Using Cross-Vehicle Camera Targeting
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Solution Overview
Problem
Existing four-wheel aligners suffer from deviations in the detection of four-wheel alignment due to misalignment of calibration detection devices on both sides, affecting the accuracy of vehicle wheel parameter measurements.
Innovation Solution
A calibration system comprising a first device with a first camera and a second device with a calibration member, where the first camera obtains image information of the calibration member on the opposite side, and a control device processes this information to ensure accurate mounting and alignment of the devices, using multiple calibration members with non-overlapping projections and varying distances to enhance detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If calibration detection devices are mounted separately on both sides, then the device complexity is reduced and ease of manufacture is improved, but the measurement precision deteriorates due to position deviation
Solution Approach 1:
The patent combines the calibration detection devices into a single integrated device that can detect both left and right wheels simultaneously. This merging eliminates the position deviation issue between separate devices while maintaining ease of manufacture through a unified structural design. The integrated device includes a mounting structure that positions the detection components at predetermined locations, ensuring consistent and accurate measurement across all wheels.
2Device complexity
If separate calibration devices are used on both sides, then the device complexity is reduced, but the reliability deteriorates due to potential position deviation affecting detection consistency
Solution Approach 1:
The patent merges multiple calibration detection functions into a single integrated device, ensuring consistent and reliable detection across all wheels. The unified device includes a mounting structure that maintains predetermined positions for detection components, eliminating the reliability issues associated with separate devices. This integration ensures that all detection operations are performed with consistent positioning and accuracy.
3Measurement precision
If multiple calibration members are used with varying distances, then the measurement precision is improved through better geometric coverage, but the device complexity increases
Solution Approach 1:
The patent segments the calibration function into multiple calibration members with different distances and orientations, each serving a specific detection purpose. This segmentation allows the system to achieve high measurement precision through comprehensive geometric coverage while managing device complexity through modular organization. Each calibration member can be independently positioned and configured to optimize detection accuracy for specific wheel parameters.
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
The system guarantees accurate detection of the distance and relative position relationship between the first and second devices, improving the overall accuracy of four-wheel alignment detection by ensuring precise mounting and alignment of the calibration devices.
Implementation Method 1
the first camera of the first device is configured to obtain first image information of the calibration member of the second device located on an opposite side
Data Source
AI summary
The present application provides a calibration system and a four-wheel aligner. The calibration system includes a first device and a second device for use in pairs. The first device and the second device are respectively arranged on the side of the vehicle to be detected where the wheel to be measured is arranged. The first device includes a first camera, and the second device includes a calibration member. The first camera of the first device is configured to obtain the first image information of the calibration member of the second device on the opposite side. The control device is connected to the first camera, and is configured to receive the first image information from the first camera and process the first image information. The calibration system of the present application obtains the first image information of the second device on the opposite side through the first camera.