On-board Radar Calibration Device with Adjustable Laser
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Solution Overview
Problem
The calibration of on-board radar systems in automobiles is complex due to variations in mounting positions and angles caused by factors like vibration and collision, leading to difficulties in accurately calibrating adaptive cruise control systems, especially since current calibration methods require after-market adjustments and involve cumbersome radar calibration auxiliary devices.
Innovation Solution
An on-board radar calibration device featuring a bracket assembly with a movable beam and sliding member, equipped with a calibration laser that can emit a laser beam to position and align the radar calibration auxiliary device, simplifying the calibration process by allowing horizontal and vertical adjustments, and reducing the number of elements needed for calibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional radar calibration auxiliary devices are used, then calibration can be performed, but the device complexity and difficulty of locating the auxiliary device increase due to different mounting positions of on-board radars on different automobile models
Solution Approach 1:
The patent applies universality by designing a standardized mounting structure with a universal interface that can accommodate different on-board radar models and positions. The bracket assembly with adjustable positioning mechanisms allows the same calibration device to be used across multiple automobile models, eliminating the need for model-specific calibration fixtures and reducing operational complexity.
Solution Approach 2:
The calibration device is segmented into modular components including a bracket assembly, positioning mechanisms, and laser alignment systems. This segmentation allows each component to be independently adjusted and configured for different radar positions, making the overall system more manageable and easier to locate and operate despite variations in mounting positions.
2Measurement precision
If multiple calibration elements are used to ensure accurate calibration, then calibration accuracy is improved, but the number of elements and device complexity increase
Solution Approach 1:
The patent merges multiple calibration functions into a single integrated calibration laser system. The laser assembly combines vertical and horizontal alignment capabilities, target projection, and positioning functions that would traditionally require separate elements. This consolidation maintains calibration accuracy while reducing the total number of components and simplifying the calibration process.
Solution Approach 2:
The calibration laser serves multiple functions simultaneously: it provides vertical plane calibration, horizontal positioning, and serves as a reference target for alignment. This multi-functionality eliminates the need for separate calibration elements for each function, reducing the quantity of elements while maintaining comprehensive calibration accuracy.
3Measurement precision
If after-market calibration is performed to correct mounting position changes, then radar measurement accuracy is restored, but time and cost are increased
Solution Approach 1:
The calibration device enables preliminary alignment through visual laser guidance before final precision calibration. The laser projects reference targets and alignment markers that allow technicians to quickly pre-position the radar at correct angles and positions, significantly reducing the time required for subsequent precise calibration adjustments and restoring measurement accuracy more efficiently.
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
This solution facilitates precise calibration of on-board radar systems across different automobile models, reducing costs and complexity, and simplifying the calibration operation by enabling the calibration of the vertical plane and positioning of the radar calibration auxiliary device using a single calibration laser and diaphragm system.
Implementation Method 1
a calibration laser accommodated in the mounting through hole and configured to emit a laser beam toward a to-be-calibrated automobile
Implementation Method 2
the radar calibration auxiliary device being configured to reflect the laser beam passing through the diaphragm to return the reflected laser beam to the laser along an original path to calibrate the vertical plane
Data Source
AI summary
The present application relates to the field of automobile maintenance and device calibration, and discloses an on-board radar calibration device. The on-board radar calibration device includes a bracket assembly, a beam assembly, a sliding member, and a calibration laser. The beam assembly is mounted on the bracket assembly, and is movable relative to the bracket assembly in a vertical direction. The sliding member is mounted on the beam assembly and is movable relative to the beam assembly in a horizontal direction, the sliding member including a first surface and a second surface opposite to each other and being provided with a mounting through hole, and the mounting through hole penetrating the first surface and the second surface. The calibration laser is accommodated in the mounting through hole and is configured to emit a laser beam toward a to-be-calibrated automobile. In the present application, the calibration laser can horizontally slide in synchronization with the sliding member, thereby facilitating positioning of radar calibration auxiliary devices of different automobile models to calibrate on-board radars of different automobile models.