License Plate Camera Alignment for ADAS Calibration Positioning
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Solution Overview
Problem
Existing ADAS calibration methods require cumbersome and expensive clamps or optical targets near the wheels, necessitating time-consuming manual adjustments and lacking accuracy.
Innovation Solution
A method and system using a vehicle's front license plate with an alphanumeric code to align ADAS calibration, employing a camera arrangement and control unit to identify the plate, query databases for vehicle model and calibration position, and provide driving commands for precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If clamps with optical targets are used on wheels for vehicle positioning, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent extracts the optical target from the wheel clamp system and relocates it to a fixed position on the ground. This separates the measurement function from the wheel attachment, eliminating the need for complex clamps while maintaining positioning accuracy through the fixed ground-mounted target.
Solution Approach 2:
The patent introduces a camera as an intermediary device to capture images of the optical target. This mediator enables automated vehicle positioning by photographing the target's position relative to the vehicle, replacing direct optical measurement systems and reducing overall device complexity.
2Ease of operation
If manual adjustment of support position is used for vehicle alignment, then ease of operation is maintained, but productivity decreases
Solution Approach 1:
The patent implements feedback by using a camera to continuously monitor the relative position between the vehicle and the optical target. The captured images provide real-time position information that enables automated calculation of the vehicle's correct position, eliminating time-consuming manual adjustments while maintaining operational simplicity.
Solution Approach 2:
The patent replaces the mechanical manual adjustment system with an automated optical-mechanical system. The camera captures the optical target's position, and a computer automatically calculates and guides the vehicle positioning, substituting manual mechanical operations with automated image processing and calculation.
3Ease of operation
If optical targets are placed on the ground next to wheels, then ease of operation is improved, but measurement precision deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-positioning the optical target at a fixed location on the ground before the vehicle arrives. This advance positioning ensures the target is already in the correct location to capture accurate vehicle position data, eliminating the need for on-site adjustments and maintaining both operational ease and measurement 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 accurate, efficient, and cost-effective alignment of ADAS sensors without clamps or optical targets, improving speed and reliability in calibration processes.
Implementation Method 1
acquiring images by means of the camera arrangement
Data Source
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AI summary
A method for aligning a vehicle (100) to an ADAS calibration target (4) mounted on a support (2) bearing a camera (15), the vehicle (100) having a front license plate (101) integrally mounted thereon, the method comprising: - position the vehicle (100) in a service area (200); - positioning the support (2) in front of the vehicle (100); - moving the vehicle (100) with respect to the support (2) until the front license plate (101) of the vehicle (101) is detected by the camera (15); - acquiring images of the front license plate (101) by means of the camera (15) and identifying the corresponding alphanumeric code (102); - retrieving a model of the vehicle (100) univocally associated to the alphanumeric code (102); - retrieving a predetermined position associated with the model of the vehicle (100); - providing commands to a driver for driving the vehicle (100) so as it reaches the predetermined position.