LKA Calibration Device Using Laser and Graduated Scale
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current LKA systems lack a universal calibration device capable of accommodating different vehicle models, requiring frequent alignment and calibration due to sensor position changes from vibrations, collisions, and environmental factors.
Innovation Solution
A calibration device comprising a support apparatus with a horizontal graduated scale, lasers, and a pattern board, where the lasers are mounted on the vehicle and emit beams to the graduated scale, allowing for precise calibration of the vehicle's centerline, and the pattern board's alignment pattern can be changed based on the vehicle model.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a pattern board is used for calibration with different algorithms for different vehicles, then calibration can be performed for various vehicle series, but there is no universal calibration device and the process becomes complex
Solution Approach 1:
The calibration device uses a universal coordinate system and standardized laser projection method that can calibrate LKA systems across different vehicle models. The pattern board with predefined geometric patterns serves as a universal reference that works with various camera algorithms, eliminating the need for model-specific calibration procedures.
Solution Approach 2:
The device allows adjustment of laser projection parameters (distance, angle, height) to accommodate different vehicle models and camera positions. By changing these physical parameters rather than the fundamental calibration method, the same device can adapt to various vehicle series without requiring different algorithms.
2Measurement precision
If sensors are mounted at appropriate angles and positions for LKA system, then accurate lane detection can be achieved, but the physical mounting states may change due to vibration, collision, and environmental factors
Solution Approach 1:
The calibration device is used periodically to detect and correct mounting state changes before they significantly impact detection accuracy. By performing preliminary calibration checks, the system can restore accurate sensor positioning after vibrations or collisions have caused drift, preventing degradation of lane detection performance.
3Reliability
If occasional alignment and calibration are performed to correct sensor position changes, then LKA system accuracy can be maintained, but frequent calibration increases time consumption
Solution Approach 1:
The calibration device enables rapid self-calibration of the LKA system through automated coordinate system matching and parameter adjustment. The process requires minimal manual intervention and can be quickly performed by technicians using the standardized procedures and visual feedback provided by the device, significantly reducing calibration time while maintaining accuracy.
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
Facilitates accurate and model-specific calibration of LKA systems by ensuring precise alignment of the vehicle's centerline, enhancing the calibration process for various automobile models.
Implementation Method 1
The laser is configured to be mounted on the body of an automobile and to emit a laser beam to the horizontal graduated scale
Implementation Method 2
The attaching board is a rectangular magnetic board, configured to attach a magnetic fabric having the alignment pattern by a magnetic attraction force
Implementation Method 3
The reflector is configured to reflect the laser beam that passes through the diaphragm to the laser
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The present invention relates to the technical field of automobile maintenance and device calibration and discloses a calibration device for a lane keeping assist (LKA) system. The calibration device includes a support apparatus, a laser and a pattern board. The support apparatus includes a horizontal graduated scale. The laser is configured to be mounted on the body of an automobile and to emit a laser beam to the horizontal graduated scale. The pattern board is mounted on the support apparatus and is configured to attach an alignment pattern. By means of the calibration device, two lasers are mounted on wheels on two sides of the automobile. Two laser beams that are emitted from equal distances with the wheels being reference points are irradiated to the horizontal graduated scale. Based on marks on the horizontal graduated scale, the support apparatus may be moved to an appropriate position to calibrate the centerline of the automobile. If the centerline of the automobile has been calibrated, a corresponding alignment pattern may be selected or changed based on the model of the automobile and attached on the pattern board, thereby facilitating calibration operations for an LKA system for different models of automobiles.