Calibration Frame for Vehicle Reference System
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Solution Overview
Problem
Existing vehicle measurement systems require calibration of two opposing reference systems, which is cumbersome and prone to errors, and do not allow for precise calibration of a single reference system in all three spatial dimensions.
Innovation Solution
A system and method using a calibration device with multiple reference features and a calibration frame with at least three support points, where the positions of these features are known in a shared coordinate system, allowing for the optical detection and precise calibration of a single reference system without the need for opposing systems, using registration marks and locating holes for accurate positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two opposing reference systems are used for calibration, then mutual referencing is possible, but the calibration process becomes cumbersome and error-prone
Solution Approach 1:
The invention extracts the calibration frame with its support points and reference features from the dual reference system configuration. By using a separate calibration frame that can be positioned independently, the system eliminates the need for two opposing reference systems while maintaining calibration accuracy through the known positions of support points and reference features in the shared coordinate system
Solution Approach 2:
The calibration frame acts as an intermediary between the image recording device and the reference system. It provides known reference features and support points that mediate the calibration process, allowing the image recording device to determine coordinates of reference features without requiring mutual referencing between two complex reference systems
2Measurement precision
If calibration is performed in all three spatial dimensions, then precise calibration is achieved, but the positioning requirements become more complex
Solution Approach 1:
The invention transitions from two-dimensional planar calibration to three-dimensional spatial calibration by introducing support points at different heights and calibration frame reference features distributed in three-dimensional space. The image recording device captures images from multiple perspectives to determine coordinates in all three spatial dimensions, achieving comprehensive calibration precision
Solution Approach 2:
The calibration frame is segmented into multiple support points and calibration frame reference features positioned at known locations in three-dimensional space. This segmentation allows the calibration process to independently determine coordinates along each spatial axis while maintaining overall system 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
Enables efficient and accurate calibration of a reference system in all three spatial dimensions, reducing errors and simplifying the calibration process by eliminating the need for dual system referencing, and allowing flexible design and positioning of calibration frame features.
Implementation Method 1
optically detecting the calibration device reference features, the calibration frame reference features, and the support points with the aid of the image recording device
Data Source
AI summary
A measuring station system for calibrating a reference system for vehicle measurement has at least one image recording device, a calibration device having multiple calibration device reference features, and a calibration frame having at least three support points which are designed for accommodating a reference system carrier for the reference system to be calibrated. The calibration frame has at least three calibration frame reference features. The positions of the support points and of the calibration frame reference features in a shared coordinate system are known.