ADAS Calibration Board Alignment Using Sensor-Based Torsion Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing calibration devices for driver assistance systems in motor vehicles face errors in determining the position and alignment of vehicles due to deviations in the alignment of optically active elements, which impair the quality of the calibration process.
Innovation Solution
A calibration device with two optically active elements, such as cameras, and acceleration sensors attached to a holding device, which allows for accurate determination of the vehicle's position and orientation by correcting for torsion and inclination using image evaluation and sensor data, enhancing the calibration quality without requiring high torsional stiffness in the holding device material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the holding device is made with high torsional stiffness material, then the alignment precision of optically active elements is improved, but the manufacturing cost increases
Solution Approach 1:
The patent replaces the mechanical solution (using high-torsional-stiffness materials to prevent holding device deformation) with a sensor-based detection and correction system. Acceleration sensors detect torsion and inclination, and software algorithms correct the alignment data, eliminating the need for expensive stiff materials.
Solution Approach 2:
The patent changes the approach from controlling physical parameters (material stiffness) to measuring and correcting operational parameters (torsion angle, inclination angle) through sensors and software compensation, achieving the same alignment precision with lower-cost materials.
2Stability of the object's composition
If the holding device is made with high torsional stiffness material, then the alignment stability is improved, but the device complexity increases
Solution Approach 1:
The patent replaces complex mechanical rigidity requirements with a simpler holding device structure compensated by acceleration sensors and software algorithms, reducing both material complexity and structural complexity while maintaining alignment stability.
Solution Approach 2:
The patent introduces acceleration sensors as intermediary elements that detect holding device orientation and enable software-based correction, simplifying the mechanical structure while maintaining alignment stability through active compensation.
3Measurement precision
If acceleration sensors and software correction are added, then the calibration quality is improved, but the device complexity increases
Solution Approach 1:
The patent implements a self-correction system where the calibration device automatically detects its own torsion and inclination using acceleration sensors and compensates for these errors through software algorithms, improving calibration quality while adding only minimal hardware components.
Solution Approach 2:
The patent introduces feedback loops where acceleration sensors continuously monitor holding device orientation, and the system automatically adjusts alignment calculations based on sensor data, improving calibration accuracy through active error compensation.
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 solution significantly reduces errors in vehicle position and orientation determination, thereby enhancing the calibration quality of driver assistance systems and allowing for cost-effective manufacturing of the calibration device using less expensive materials.
Implementation Method 1
Each of the two acceleration sensors (16a, 16b) makes it possible to determine an orientation, in particular an inclination, of a respective end (10a, 10b) of the holding device (10) with respect to gravity
Data Source
AI summary
A calibration device for calibrating a driver assistance system. The calibration device includes a calibration board and two optically active elements, which make it possible to determine the position and/or the alignment of a motor vehicle with respect to the calibration device. The two optically active elements are attached at two mutually opposing ends of a holding device. The holding device has a longitudinal axis, which essentially extends in the horizontal direction. An acceleration sensor is attached at each of the two mutually opposing ends of the holding device.