Rotating LiDAR Transceiver Layout for Heat and Optical Isolation
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Solution Overview
Problem
Existing LIDAR devices face challenges in achieving compact design, reducing weight and aerodynamic drag, minimizing optical interference, and efficiently dissipating heat while maintaining high-performance object detection and tracking capabilities, particularly in high-speed automotive applications.
Innovation Solution
A LIDAR device with a rotating assembly featuring transceivers oriented in opposite directions, modular component attachment, and heat dissipation members on multiple sides, along with a housing design that minimizes weight, aerodynamic drag, and prevents optical interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple transceivers are arranged to sense laser beams in different directions, then sensing coverage and performance are improved, but device complexity and space requirements increase
Solution Approach 1:
The patent combines multiple transceivers (first transceiver and second transceiver) into a single integrated sensor device housing. The transceivers are arranged in opposite directions within the same rotational assembly, allowing the device to sense laser beams in multiple directions simultaneously while maintaining a unified compact structure. This merging approach improves sensing coverage without proportionally increasing device complexity.
Solution Approach 2:
The patent arranges transceivers in opposite directions (180 degrees apart) within the rotational assembly, utilizing spatial dimensionality to achieve multi-directional sensing. By positioning transceivers along the radial axis in opposite directions, the device captures spatial information from multiple dimensions simultaneously, improving versatility without requiring separate devices for each direction.
2Speed
If transceivers are arranged in opposite directions to reduce weight and aerodynamic drag, then rotational performance is improved, but heat dissipation becomes more challenging
Solution Approach 1:
The patent divides the housing into multiple segments including a first housing portion and a second housing portion arranged in opposite directions. Each housing portion contains a transceiver and is equipped with dedicated heat dissipation members. This segmentation allows heat from each transceiver to be dissipated independently through its respective housing portion, preventing heat accumulation while maintaining the lightweight opposite-direction arrangement for improved rotational performance.
Solution Approach 2:
The patent introduces heat dissipation members as intermediary components between the transceivers and the external environment. These heat dissipation members are coupled to the housing portions and facilitate thermal energy transfer from the transceivers to the surrounding air, acting as a mediator that enables effective heat dissipation without compromising the compact opposite-direction transceiver arrangement needed for high-speed rotation.
3Measurement precision
If lens hoods of different sizes are arranged on different transceivers, then optical performance is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies local quality by configuring lens hoods with different sizes according to the specific optical requirements of each transceiver position. The first lens hood and second lens hood are sized differently to optimize the field of view and light collection for their respective transceivers. This localized optimization improves optical performance for each sensing direction while the lens hoods remain integral components of the housing, minimizing additional manufacturing 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 solution enables a compact, lightweight, and efficient LIDAR device with improved heat dissipation and reduced optical interference, enhancing sensing efficiency and performance in high-speed automotive environments.
Implementation Method 1
a first transceiver that irradiates a laser beam in a first direction and senses it at a first angle of view and a second transceiver that irradiates a laser beam in a direction opposite to the first direction
Implementation Method 2
senses a laser beam reflected from an object
Implementation Method 3
heat dissipation members within the outer housing to absorb and dissipate heat generated from the transceivers
Data Source
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AI summary
The LIDAR device disclosed in the embodiment may comprise a main frame with storage part inside; a plurality of transceivers arranged in the storage part, each irradiating a laser beam toward an object in different directions and each sensing a laser beam reflected from the object; bottom frame located at the bottom of the main frame; and a plurality of lens hoods arranged on the incident side of each of the receiving optical systems of the plurality of transceivers.