LiDAR Transceiver Layout for Low-Drag Cooling and Sealing
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Solution Overview
Problem
Existing LiDAR devices face challenges in providing a compact, lightweight, and aerodynamically efficient design that minimizes wind noise and optical interference while ensuring robust component mounting, adequate cooling, and sufficient sealing from external elements.
Innovation Solution
A LiDAR device with a main frame housing multiple transceivers that emit and sense laser beams in different directions, arranged in opposite directions to reduce weight and aerodynamic drag, and featuring a rigid structure with modular components for cooling and sealing, along with heat dissipation members on side surfaces to prevent optical interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If multiple transceivers are arranged in opposite directions, then weight and aerodynamic drag are reduced, but device complexity increases
Solution Approach 1:
The LiDAR device is segmented into multiple independent transceiver assemblies, each capable of independent operation. This allows the system to reduce weight by removing unnecessary components while maintaining functionality through distributed transceivers positioned in opposite directions.
Solution Approach 2:
Multiple transceiver functions are merged into a compact housing structure with integrated mounting frames. The opposing transceivers share common structural support and control systems, reducing overall device complexity despite the distributed arrangement.
2Object-affected harmful factors
If transceivers are arranged in opposite directions, then aerodynamic drag and wind noise are reduced, but manufacturing complexity increases
Solution Approach 1:
The transceivers are positioned asymmetrically in opposite directions to optimize aerodynamic flow patterns around the device. This asymmetric arrangement reduces wind noise and drag while the modular housing design maintains ease of manufacture through standardized assembly procedures.
Solution Approach 2:
The housing structure serves multiple functions: it protects the transceivers, provides aerodynamic shielding, and facilitates heat dissipation. This multi-functionality reduces the number of separate components needed, simplifying manufacturing despite the complex opposing arrangement.
3Reliability
If a rigid structure with modular components is used, then component mounting and sealing are improved, but device weight increases
Solution Approach 1:
Modular components are nested within the rigid housing structure, with transceivers, cooling elements, and sealing components arranged in concentric or hierarchical configurations. This nesting approach provides robust mounting and sealing while minimizing the overall structural mass required.
Solution Approach 2:
The rigid structure employs local reinforcement only where needed for mounting and sealing critical components, rather than uniformly increasing overall structural weight. Modular sections are designed with optimized material distribution to provide strength where required while minimizing weight.
4Temperature
If heat dissipation members are added to side surfaces, then heat dissipation is improved, but device complexity increases
Solution Approach 1:
Heat dissipation members are pre-integrated into the housing structure during manufacturing, rather than added as separate components. This preliminary integration approach improves heat dissipation from the transceivers while avoiding the complexity of additional assembly steps for thermal management components.
Solution Approach 2:
The heat dissipation function is merged with the existing housing and mounting structure. Thermal pathways are incorporated into the rigid framework that already provides mechanical support, eliminating the need for separate heat dissipation components and reducing overall device complexity.
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 design achieves miniaturization, reduces weight and wind noise, improves heat dissipation, and prevents optical interference, while ensuring robust component mounting and sealing, enhancing the sensing efficiency of surrounding areas.
Implementation Method 1
heat dissipation members in the external housing to absorb and release heat generated by the transceivers
Implementation Method 2
heat dissipation members in the external housing to absorb and release heat generated by the transceivers
Implementation Method 3
a first transceiver configured to emit and sense a laser beam
Implementation Method 4
at least one photodetector that converts other electromagnetic radiation into an electrical signal
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A lidar device disclosed in embodiments may comprise: a main frame within which an accommodation part is provided; a plurality of transceivers which are disposed in the accommodation part, emit laser beams toward an object in different directions respectively, and sense laser beams reflected from the object respectively; and a bottom frame under the main frame.