LiDAR Assembly with Asymmetric Mounting Angles
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Solution Overview
Problem
Conventional LiDAR systems for autonomous driving have limited detection range and accuracy due to physical characteristics, such as mounting position and field of view, resulting in blind spots and detection failures.
Innovation Solution
A LiDAR assembly comprising a central device and multiple auxiliary devices, synchronized and mounted on a specially designed apparatus to cover a wider area, combining data frames to generate high-definition maps with reduced blind spots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a single LiDAR system is used for autonomous driving detection, then the system structure remains simple, but the detection range is limited and blind spots occur
Solution Approach 1:
The patent divides the detection system into multiple independent LiDAR devices (central LiDAR and auxiliary LiDARs) that work together. Each LiDAR device has a specific mounting position and detection range, and their combined coverage eliminates blind spots while maintaining individual device simplicity.
Solution Approach 2:
The patent combines multiple LiDAR detection systems into a unified multi-LiDAR system. The central LiDAR and auxiliary LiDARs are integrated through a mounting apparatus with specific angular relationships, merging their detection capabilities to achieve comprehensive coverage without requiring a single complex LiDAR device.
2Measurement precision
If the number of laser beams is increased to improve detection thoroughness, then detection accuracy improves, but device complexity and cost increase
Solution Approach 1:
Instead of increasing the number of beams in a single LiDAR, the patent segments the detection function across multiple LiDAR devices. Each LiDAR maintains a manageable beam count while the collective arrangement provides thorough detection coverage through spatial distribution rather than beam multiplication.
Solution Approach 2:
The patent transitions from improving detection accuracy by adding more beams in one dimension to achieving accuracy through spatial distribution across multiple devices in three-dimensional space. The mounting apparatus positions auxiliary LiDARs at specific angles (15-45 degrees) to cover different spatial zones, achieving thorough detection through geometric arrangement rather than beam quantity.
3Reliability
If a single LiDAR is mounted at a fixed position, then the mounting structure is simple, but blind spots are created due to limited field of view
Solution Approach 1:
The patent segments the field of view coverage by positioning multiple LiDAR devices at different locations and angles. The central LiDAR provides primary detection while auxiliary LiDARs mounted at specific angles (15-45 degrees) cover peripheral and blind spot areas, dividing the overall detection task across multiple viewing zones.
Solution Approach 2:
The mounting apparatus employs asymmetric angular positioning of auxiliary LiDARs relative to the central LiDAR. The auxiliary LiDARs are positioned at specific non-symmetric angles (15-45 degrees) to optimize coverage of blind spots, creating an asymmetric detection geometry that eliminates dead zones while maintaining structural simplicity.
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
Enhances detection range and accuracy by eliminating blind spots and providing high-definition maps with improved coverage and reduced costs compared to conventional systems.
Implementation Method 1
LiDAR systems measure distance to a target by illuminating the target light laser light and measuring the reflected light with a sensor
Implementation Method 2
Differences in laser return times and wavelengths can then be used to make digital three-dimensional (3D) representations of the target
Data Source
AI summary
Embodiments of the disclosure provide a LiDAR assembly. The LiDAR assembly includes a central LiDAR device configured to detect an object at or beyond a first predetermined distance from the LiDAR system and an even number of multiple auxiliary LiDAR devices configured to detect an object at or within a second predetermined distance from the LiDAR system. The LiDAR assembly also includes a mounting apparatus configured to mount the central and auxiliary LiDAR devices. Each of the central and auxiliary LiDAR devices is mounted to the mounting apparatus via a mounting surface. A first mounting surface between the central LiDAR device and the mounting apparatus has an angle with a second mounting surface between one of the auxiliary LiDAR devices and the mounting apparatus.