In-Vehicle LiDAR Bracket Structure for Dust Shielding and NVH Control
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Solution Overview
Problem
Existing LiDAR systems are prone to interference from external environmental factors, which affects detection accuracy.
Innovation Solution
A LiDAR bracket that integrates the LiDAR inside the vehicle, mounting it on the window glass to shield it from dust and debris, and incorporates vibration-damping features to reduce noise and vibration, while allowing detection signals to pass through the glass.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the LiDAR is mounted outside the vehicle, then the detection field of view is larger, but the detection accuracy is reduced due to external environmental interference
Solution Approach 1:
The patent introduces an intermediary structure (the bracket assembly with base plate, side plate, and cover plate) that mediates between the LiDAR and the external environment. This intermediary structure creates a protected cavity that shields the LiDAR from dust, debris, and other environmental factors while still allowing the laser beams to pass through for detection
Solution Approach 2:
The patent uses a cover plate that acts as a protective shell enclosing the LiDAR. This shell structure protects the LiDAR from environmental harm while being transparent or translucent to allow laser beams to pass through, effectively solving the contradiction between protection and detection functionality
2Object-affected harmful factors
If the LiDAR is mounted inside the vehicle, then the protection from environmental factors is improved, but the detection field of view may be restricted
Solution Approach 1:
The bracket assembly is segmented into multiple components (base plate, side plate, cover plate) that can be independently designed and optimized. This segmentation allows the structure to provide comprehensive protection while incorporating features like transparent cover plates that maintain detection field of view
Solution Approach 2:
The cover plate is designed with local quality characteristics - it is transparent or translucent in the areas where laser beams need to pass through, while providing opaque protection in other areas. This localized property differentiation solves the contradiction between protection and detection field of view
3Reliability
If the LiDAR is mounted on the window glass, then the shielding from external factors is improved, but the structural complexity increases
Solution Approach 1:
The patent merges multiple functions into a single integrated bracket assembly structure. The base plate, side plate, and cover plate work together as a unified mounting system that provides both structural support and environmental shielding, reducing the need for separate protective components
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
Improves detection accuracy by protecting the LiDAR from external interference and meeting NVH performance requirements, while enabling effective environmental perception.
Implementation Method 1
Light detection and ranging (LiDAR) can perceive environmental information around a vehicle through laser detection
Implementation Method 2
incorporates vibration-damping features to reduce noise and vibration
Data Source
AI summary
A LiDAR bracket and a vehicle are provided. The LiDAR bracket includes a base plate, a side plate, and a fixing plate. One end of the side plate is fixedly connected to a peripheral side face of the base plate, the side plate and the base plate are arranged to at least partially surround and define a box space, the fixing plate is fixedly connected to another end of the side plate away from the base plate, the fixing plate extends in a direction away from the box space, the LiDAR is operable to be fixedly connected to the base plate and received within the box space, and the fixing plate is configured to be fixedly connected to an inside of a vehicle body of the vehicle.