Laser Wheel-Referenced Radar Alignment for Precise Vehicle Installation
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Solution Overview
Problem
The existing methods for installing radar assemblies in automobiles lack precision, leading to potential safety issues due to manual measurement errors in angular and directional alignment, which are crucial for the proper functioning of the radar system.
Innovation Solution
A positioning assist device comprising a first fixator on a front wheel, a second fixator on a rear wheel, connecting rods, a horizontal reference rod, and a laser device, allowing for precise adjustment of the radar assembly's installation angle and direction relative to the automobile's center axis plane, ensuring accurate alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual measurement methods (angle ruler) are used for installing radar assemblies, then the installation process is simple and quick, but the angle precision and measurement accuracy are poor, failing to guarantee the required error range
Solution Approach 1:
The patent introduces a positioning assist device as an intermediary tool between the manual measurement method and the radar assembly installation. This device includes a laser emitter, positioning plate, and measuring scale that work together to provide precise angle measurement and visualization, transforming the imprecise manual angle ruler measurement into an accurate laser-based measurement system while maintaining operational simplicity
Solution Approach 2:
The patent replaces the traditional mechanical angle ruler with a laser-based measurement system. The laser emitter projects a laser line that serves as a precise reference for angle measurement, substituting the mechanical contact-based angle ruler with a non-contact optical measurement approach, thereby significantly improving measurement precision while reducing device complexity
2Manufacturing precision
If manual measurement and fixed positioning is used, then the installation process is straightforward, but the angle precision cannot be guaranteed within the required error range, affecting safety performance
Solution Approach 1:
The patent implements preliminary positioning by pre-establishing a reference plane parallel to the automobile's center axis plane before the actual radar assembly installation. The positioning plate is positioned in advance with its reference plane, and the laser emitter is set up to project the reference laser line, creating a precise measurement baseline before the radar assembly is mounted, thereby ensuring manufacturing precision without adding significant installation time
Solution Approach 2:
The positioning assist device serves as an intermediary system that bridges the gap between the installation process and the precision requirement. It provides real-time visual feedback through the laser line and measurable reference points, allowing installers to achieve precise angular alignment (within error range) efficiently, thus improving manufacturing precision without proportionally increasing installation time
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 provides high precision in installing radar assemblies, enhancing the safety performance of automobiles by ensuring accurate angular and directional alignment, thus improving the overall safety and efficiency of the installation process.
Implementation Method 1
a laser device movably installed on the horizontal reference rod, the laser device being used for emitting laser light downwards to form a laser line on an object located below the laser device
Data Source
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AI summary
A positioning assist device, comprising: a first fixator (10), which is installed on a front wheel on one side of an automobile; a second fixator (20), which is installed on a rear wheel on the same side of the automobile; a first connecting rod (30), which is connected between the first fixator (10) and the second fixator (20), wherein the vertical plane, where a center line (O1) in a lengthwise direction of the first connecting rod (30) is located, is parallel to the center axis plane of the automobile; a second connecting rod (40), which is arranged to be perpendicular to the first connecting rod (30); a horizontal reference rod (50), which is installed on the second connecting rod (40) and can rotate around the second connecting rod (40); and a laser device (60), which is movably installed on the horizontal reference rod (50), wherein the horizontal angle, relative to the horizontal reference rod (50), of the laser device (60) can be adjusted to be the angle, relative to the central axis surface of the automobile, of the energy receiving and transmitting surface for installing a radar assembly when the radar assembly to be installed is installed on one side of the automobile. By means of the positioning assist device, the installation position, of the radar assembly to be installed, on one side of the automobile can be determined by adjusting the laser device and the horizontal reference rod, convenience and rapidness are achieved, and installation precision is high. Further disclosed is a positioning assist method.