Vehicle Assistance Calibration Device with Dynamic Target Alignment
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Solution Overview
Problem
Current vehicle assistance system calibration methods, particularly for ADAS, are time-consuming, require significant manual effort, and need a level floor, making them inefficient and impractical, especially for dynamic calibrations in urban areas.
Innovation Solution
A calibration device with a sensor to detect vehicle position and orientation, and a positioning device to automatically align a target pattern at a predetermined position and orientation, allowing for both static and dynamic calibration without additional aids like lasers, and incorporating a movement device for precise mechanical positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual alignment of measuring boards is used, then calibration precision can be achieved, but calibration time and complexity increase significantly
Solution Approach 1:
The system uses the vehicle's own sensors (camera, radar, ultrasonic sensors) to detect the calibration device's position and orientation, and automatically adjusts the target pattern display accordingly. The calibration process serves itself by using the vehicle's detection capabilities rather than requiring external manual alignment tools.
Solution Approach 2:
The calibration system transitions from static measuring boards that require manual positioning to a dynamic system where the target pattern is automatically positioned and adjusted based on real-time detection of the vehicle's sensor positions and orientations. The display device dynamically adapts the target pattern to match the detected sensor parameters.
2Measurement precision
If static calibration with measuring boards is used, then calibration accuracy is improved, but the requirement for a level floor and manual alignment increases complexity
Solution Approach 1:
The system replaces the mechanical measuring boards that require physical alignment on a level floor with an electronic display device that presents target patterns digitally. The physical mechanical alignment complexity is substituted with electronic detection and display adjustment, eliminating the need for level floors and manual mechanical positioning.
Solution Approach 2:
The calibration device serves multiple functions: it detects the position and orientation of various vehicle sensors (camera, radar, ultrasonic sensors), processes this information, and automatically positions the appropriate target patterns for each sensor type. This multi-functional approach consolidates what would otherwise require multiple separate calibration procedures.
3Adaptability or versatility
If dynamic calibration run is used, then vehicle-specific calibration is achieved, but the process becomes very complex and difficult to implement in urban areas
Solution Approach 1:
The system performs preliminary detection of the vehicle's sensor positions and orientations before the calibration process begins. By detecting and storing the spatial parameters of all sensors in advance, the system prepares the necessary information beforehand, allowing the actual calibration to proceed automatically without complex real-time adjustments during the calibration run.
Data Source
Figure 1
Figure 2~3
AI summary
The invention relates to a calibrating device (6; 18) for calibrating vehicle assistance systems, which calibrating device comprises: at least one target pattern (8; 8a-8d); at least one sensor (10; 20), which is designed to sense the position and orientation of a vehicle (4) to be measured in relation to the calibrating device (6; 18); and a positioning device (14; 24), which is designed to position the at least one target pattern (8; 8a-8d) on the basis of the position of the vehicle (4) to be measured that was sensed by the at least one sensor (10; 20) in such a way that the at least one target pattern (8; 8a-8d) is arranged at a specified position in a specified orientation in relation to the vehicle (4) to be measured.