Tri-Camera Vehicle Sensor Calibration Arrangement
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Solution Overview
Problem
The placement of measurement marks for sensor calibration in vehicles is complex and often requires manual effort, making it difficult and time-consuming.
Innovation Solution
A measurement arrangement with a tri-camera setup, including a measuring station level that delimits two half-spaces, where the first and second cameras capture areas on either side of the vehicle, and a third camera captures areas in front of or behind the vehicle, assisted by a computer unit to calculate vehicle reference information and position the sensor measuring brand accurately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a measuring mark is placed by manual measurement for sensor calibration, then the placement can be performed without additional equipment, but the process becomes very complex and difficult to document
Solution Approach 1:
The patent introduces a measuring arrangement with cameras and a computer as an intermediary system between the measurer and the measuring mark. The computer calculates the position and orientation of the measuring mark based on images captured by cameras, replacing complex manual measurement processes with automated optical measurement and calculation.
Solution Approach 2:
The patent replaces manual mechanical measurement methods with an optical-mechanical system consisting of cameras and a computer. Instead of using manual tools and techniques to measure and mark positions, the system uses cameras to capture images and a computer to calculate positions, thereby simplifying the operation.
2Adaptability or versatility
If multiple cameras are added to expand detection range for sensor calibration, then the measuring mark can be precisely positioned in various spatial areas, but the device complexity increases
Solution Approach 1:
The patent makes each camera in the measuring station multi-functional. The computer can assign different functions to different cameras depending on the calibration needs - for example, one camera can be used to capture the measuring mark while another captures reference objects, or cameras can be selectively activated based on the spatial area that needs to be measured.
Solution Approach 2:
The patent introduces dynamic configurability to the measuring station. The computer can dynamically select which cameras to activate and how to process their images based on the specific calibration task at hand. This allows the system to adapt its complexity to the actual measurement needs rather than always operating at maximum complexity.
3Manufacturing precision
If the third camera captures areas in the second half-space facing away from the vehicle, then the sensor measuring mark can be positioned at the desired target position for calibrating sensors detecting front or rear areas, but the alignment precision between multiple cameras becomes more challenging
Solution Approach 1:
The computer acts as an intermediary that handles the complex task of coordinating multiple cameras. It processes images from all cameras, calculates their relative positions and orientations, and determines the precise position of the measuring mark by combining information from multiple viewpoints, thereby managing the alignment complexity centrally.
Solution Approach 2:
The patent replaces the need for complex mechanical alignment of multiple cameras with computational methods. Instead of physically aligning cameras with precise mechanical adjustments, the system uses computer vision algorithms to detect and correct for misalignments, replacing mechanical precision requirements with computational processing.
Data Source
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AI summary
The invention relates to a measuring arrangement for calibrating a sensor (S) of a vehicle (10), comprising a measuring station (2) with a measuring station level (ME) by which a first and second half-space (H1, H2) are delimited from each other, wherein the measuring station (2) comprises a first and a second camera (K1, K2) which are arranged on the measuring station (2) such that a region of the first half-space (H1) can each be detected by the first and second cameras (K1, K2). The measuring station (2) has at least a third camera (K3) which is arranged on the measuring station such that the detection area of the third camera (K3) lies in the second half-space (H2).