LiDAR Module Layout for Laser Isolation and Easier Assembly
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Solution Overview
Problem
Existing LiDAR systems have complex structures due to the need to accommodate a positioning column, leading to high production costs and complicated assembly, with the transceiver device often arranged inside the housing, making disassembly inconvenient.
Innovation Solution
The LiDAR design separates the laser transceiver system from the rotating system, allowing them to be manufactured independently, and incorporates a baffle fixing structure with inner and outer housings and baffles to isolate emitted and reflected lasers, along with a bearing mounting structure that reduces the rotating body's length and improves stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the LiDAR includes a rotating system with a positioning column to drive the transceiver system to rotate, then the working range and field of view are improved, but the structure becomes complex and production costs increase
Solution Approach 1:
The patent divides the LiDAR into separate modular components: a rotating system with positioning column and a transceiver system housed in a housing. These modules can be manufactured independently and assembled together, simplifying the overall structure while maintaining the rotating functionality for expanded field of view.
Solution Approach 2:
The patent removes the transceiver system from the interior space of the housing and positions it externally, connected to the rotating system. This extraction eliminates the need for complex internal routing and positioning mechanisms within the housing, reducing structural complexity while preserving the rotating capability.
2Reliability
If the transceiver device is arranged inside the housing to avoid the positioning column, then the laser path is protected, but the assembly becomes complicated and disassembly inconvenient
Solution Approach 1:
The transceiver system is extracted from the housing interior and positioned externally, connected via a connection structure. This allows the housing to be a simple enclosed structure that protects the laser path, while the transceiver system can be easily assembled and disassembled as a separate module, improving manufacturing convenience.
Solution Approach 2:
A connection structure acts as an intermediary between the housing and the transceiver system, providing a standardized interface that simplifies assembly and disassembly. This mediator allows the transceiver to be positioned outside the housing while maintaining protected laser path transmission through the connection interface.
3Ease of operation
If optical elements are provided in the housing to adjust the laser path and avoid the positioning column, then the laser emission is enabled, but the structure becomes complex and costs increase
Solution Approach 1:
The transceiver system including laser transmission and reception functions is extracted from the housing interior. This eliminates the need for complex internal optical elements to route lasers around the positioning column, as the transceiver operates from an external position with direct line-of-sight access.
Solution Approach 2:
Instead of placing optical elements inside the housing to manipulate laser paths around obstacles, the patent inverts the approach by positioning the transceiver system externally where direct laser transmission is possible without internal optical manipulation, thereby simplifying the optical path.
Data Source
AI summary
The present application provides a LiDAR. A baffle fixing structure of the LiDAR is set between an inner housing of the LiDAR and a second housing for fixing a baffle that isolates an emitting laser from a reflected device. An angular displacement measuring device of the LiDAR includes a reflecting part and a light emitting part, wherein the reflecting part includes a plurality of reflecting teeth that extend downwardly and are spaced from each other, the light emitting part obtains a rotation angle of the reflecting part relative to the light emitting part by obtaining the number of the reflecting teeth passed by the measurement light. A rotating system in the LiDAR is arranged on one side of the laser transceiver system and is detachably connected to the laser transceiver system, so that modular production can be carried out, and the production efficiency is improved.