LiDAR Optical Data Transmission Apparatus for High-Resolution Point Clouds
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Solution Overview
Problem
Current LiDAR systems using wireless communication based on electromagnetic coupling face inefficiencies in data transmission due to the physical limitations of the medium, particularly when requiring a large number of scanning lines for high spatial resolution in applications like automatic driving and intelligent perception.
Innovation Solution
A data transmission apparatus within the LiDAR system utilizes light as a medium, employing a first and second optical module with a coupling optical system, including an annular lens, to convert digital signals into optical signals and vice versa, enhancing transmission efficiency with improved anti-electromagnetic interference and communication capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless communication apparatus based on electromagnetic coupling is used for point cloud data transmission, then the LiDAR system can achieve wireless data transmission, but data transmission efficiency is relatively low due to physical limitations of the transmission medium
Solution Approach 1:
The patent replaces the electromagnetic coupling-based wireless communication system with an optical communication system. The first optical module converts digital signals to optical signals, the coupling optical system transmits the optical signals through air, and the second optical module converts optical signals back to digital signals. This substitution of electromagnetic transmission with optical transmission resolves the contradiction by achieving both high transmission efficiency and reliable transmission quality, as optical communication provides higher bandwidth and immunity to electromagnetic interference compared to traditional electromagnetic coupling methods.
2Measurement precision
If a larger number of scanning lines are implemented to achieve higher spatial resolution, then spatial resolution is improved, but data transmission burden increases and transmission efficiency decreases
Solution Approach 1:
The patent changes the transmission medium parameter from electromagnetic waves to optical waves. Optical communication enables significantly higher data transmission capacity and speed compared to traditional electromagnetic coupling. This parameter change allows the system to handle the increased data burden from high-resolution scanning without sacrificing transmission efficiency, as optical communication can accommodate larger data volumes at higher speeds while maintaining reliable transmission.
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 approach significantly improves data transmission efficiency by leveraging the high communication capacity and anti-electromagnetic interference resistance of optical communication, ensuring reliable and high-quality data transfer in LiDAR systems.
Implementation Method 1
the first optical module is configured to receive a first digital signal output by a LiDAR front-end apparatus and convert the first digital signal into an optical signal
Implementation Method 2
the coupling optical system includes an annular lens, and the annular lens is arranged around the central shaft and is configured to adjust a propagation direction of the optical signal output by the first optical module and transmit the optical signal to the second optical module
Implementation Method 3
the second optical module is configured to convert the optical signal into the first digital signal and output the first digital signal to an upper application apparatus
Data Source
AI summary
A LiDAR system is provided. The LiDAR system includes a first data transmission apparatus, a second data transmission apparatus, a rotator, and a central shaft. The first data transmission apparatus and the second data transmission apparatus are located in the LiDAR system. The rotator is connected with the central shaft through a bearing, the rotator is connected to a bearing rotor, and the central shaft is connected to a bearing stator. The first data transmission apparatus includes a first optical module and a second optical module. The second data transmission apparatus includes a third optical module, a coupling optical system, and a fourth optical module.