Vehicle Sensor Calibration Device With Adjustable Target
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Solution Overview
Problem
Current sensor calibration methods for vehicles are costly, labor-intensive, and limited by the need for high-precision calibration rooms, failing to adapt to calibration of all sensors and requiring special transportation, which is not suitable for mass-produced vehicles with varying sensor types and locations.
Innovation Solution
A target calibration device with a replaceable target body, adjustable in attitude and height, and a movable base with lockable rollers, allowing for flexible calibration of various sensors without the need for specialized sites, enabling on-site calibration with reduced costs and increased efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a high-precision calibration room with fixed target patterns is used, then calibration accuracy is improved, but hardware cost and device complexity increase significantly
Solution Approach 1:
The patent applies the dynamics principle by transforming the static calibration room into a mobile calibration device. The calibration target is mounted on a movable platform with adjustable height and attitude, allowing the system to adapt to different calibration scenarios without requiring a fixed high-precision calibration room. This reduces hardware cost while maintaining calibration accuracy through dynamic positioning capabilities.
Solution Approach 2:
The patent implements universality by designing a multi-functional calibration device that can serve multiple calibration needs. The adjustable height and attitude mechanisms enable the same device to accommodate different sensor types and calibration requirements, eliminating the need for separate calibration equipment for different scenarios and reducing overall hardware cost.
2Measurement precision
If a fixed calibration site is required, then calibration precision is maintained, but time cost and labor cost increase due to special transportation
Solution Approach 1:
The patent applies dynamics by making the calibration device mobile rather than requiring a fixed calibration site. The movable platform with adjustable height and attitude allows the calibration target to be positioned at various locations and orientations, enabling on-site calibration without special transportation. This significantly reduces time loss while maintaining calibration precision through accurate positioning capabilities.
3Measurement precision
If conventional calibration methods are used for specific cameras, then camera calibration is achieved, but adaptability to all sensor types is reduced
Solution Approach 1:
The patent implements universality by designing a calibration device with adjustable height and attitude that can accommodate different sensor types. The movable platform allows the calibration target to be positioned optimally for various sensors, making the same device suitable for calibrating cameras, LiDAR, and other sensors without requiring sensor-specific calibration equipment.
Solution Approach 2:
The patent applies parameter changes by using adjustable height and attitude parameters to adapt the calibration target to different sensor configurations. By changing the positional and orientational parameters of the calibration target, the device can maintain calibration accuracy across different sensor types, enhancing versatility without sacrificing precision.
Data Source
Figure 1~2
AI summary
The disclosure relates to the technical field of sensor calibration, and provides a target calibration device, aiming at solving the problem that the existing calibration method is limited by costs and locations and cannot adapt to calibration of all sensors on a vehicle. The target calibration device comprises a target body, a target holder, and a target base. The target body can be adjusted in attitude and height, and the target pattern on the target body is replaceable. The target base is provided with a movable assembly, so that the movement and fixation of the target calibration device can be realized. The target calibration device can adapt to various calibration requirements, is more suitable for large-scale and daily after-sales maintenance and calibration scenarios, and can support switching of calibration sites. The calibration using the target calibration device according to the disclosure is not limited by locations and has low costs. Since the target base can fix the entire device, the target pattern is ensured to be stationary during calibration, thereby improving the accuracy of the calibration process.