LiDAR Scanning Module Cable Routing to Eliminate Blind Spots
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Solution Overview
Problem
Traditional 360° rotating mirror LiDAR systems experience scanning blind spots due to cables blocking the optical path, preventing full 360° coverage.
Innovation Solution
The scanning module design positions both drive assemblies on one side of the main body holder, routing cables to avoid obstructing the light path of the second optical assembly, allowing for full-angle scanning coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If drive assemblies are positioned to enable 360° rotation, then scanning coverage is improved, but cables block the optical path creating blind spots
Solution Approach 1:
The patent extracts the cable routing problem from the optical path by positioning drive assemblies and their cables on the peripheral side of the optical assembly, completely separating the cable path from the light transmission path. This eliminates cable interference while maintaining full 360° scanning capability.
Solution Approach 2:
The patent resolves the spatial conflict by transitioning from a planar arrangement to a three-dimensional configuration, positioning drive assemblies on the peripheral side of the optical assembly rather than directly behind or in front of it. This dimensional reorganization allows cables to be routed around the optical path without blocking it.
2Productivity
If traditional mirror rotation scheme is used, then scanning function is achieved, but blind spots prevent full 360° coverage
Solution Approach 1:
The patent removes the source of blind spots by extracting the cable interference from the optical path. By positioning drive assemblies on the peripheral side, the light path remains unobstructed throughout the full 360° rotation, ensuring complete scanning coverage without the blind spots that plague traditional designs.
3Ease of operation
If drive assemblies are positioned to change transmission direction of light, then scanning capability is improved, but cables obstruct the light path
Solution Approach 1:
The patent positions drive assemblies on the peripheral side of the optical assembly, utilizing the radial dimension to separate the cable routing path from the optical transmission path. This spatial reorganization allows the light to pass through the optical assembly without encountering cables, while the drive assemblies continue to control the transmission direction effectively.
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 configuration reduces working blind spots and enables full-angle coverage by preventing cable interference with the optical path, enhancing the scanning module's performance.
Implementation Method 1
a distance measuring structure to transmit a light pulse sequence to the scanning module to change the transmission direction of the light pulse sequence and then emit it
Implementation Method 2
the light pulse sequence reflected back by an ambient target passing through the scanning module and then incident to the distance measuring structure
Implementation Method 3
to determine a distance between the ambient target and the distance measuring device based on the reflected back light pulse sequence
Data Source
AI summary
A scanning module may include a main body holder having an accommodation cavity; a first optical assembly within the accommodation cavity and rotatably attached to the main body holder; a first drive assembly connected to the first optical assembly and the main body holder, respectively, and being configured to drive the first optical assembly to rotate relative to the main body holder; a second optical assembly rotatably disposed at one end of the main body holder; and a second drive assembly on a side of the second optical assembly facing the main body holder and connected to the second optical assembly and the main body holder, respectively, and configured to drive the second optical assembly to rotate relative to the main body holder.