LiDAR Dynamic Scanning Resolution via Time Delay Control
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Solution Overview
Problem
Conventional semi-solid LiDARs have insufficient scanning resolution and flexibility, limiting their ability to meet detection requirements in various application scenarios due to fixed scanning resolution and poor laser scanning flexibility.
Innovation Solution
The LiDAR detection method involves outputting two adjacent detection laser beams with a preset time delay, allowing the scanning module to adjust scanning resolution based on application scenarios by controlling the emission module and scanning step size, and processing echo laser beams to obtain high-density point cloud information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional semi-solid LiDAR uses fixed scanning resolution for the same scanning region, then the scanning system is simple and stable, but the scanning resolution is insufficient and laser scanning flexibility is poor
Solution Approach 1:
The patent implements dynamic scanning resolution adjustment by allowing the scanning module to emit laser beams at different time intervals based on preset time delays. The scanning resolution is no longer fixed but dynamically adjustable according to detection requirements, enabling the system to adapt to different application scenarios while maintaining a relatively simple hardware structure.
Solution Approach 2:
The patent changes the time interval parameter between adjacent laser beam emissions to control scanning resolution. By adjusting the preset time delay between laser beam groups, the system can vary scanning density and resolution without changing the physical structure,从而实现 adaptable scanning performance across different scenarios.
2Adaptability or versatility
If LiDAR uses fixed scanning mode, then the device operation is simple, but the detection capability is insufficient for various application scenarios
Solution Approach 1:
The patent introduces multiple preset scanning modes with different time delays and scanning patterns. The system can dynamically switch between these modes based on detection requirements, enhancing adaptability across different application scenarios while maintaining ease of operation through automated mode selection.
Solution Approach 2:
The patent designs the scanning module to support multiple scanning modes within a single device, making it universally applicable to various detection scenarios. The same hardware can perform different scanning functions by adjusting timing parameters, eliminating the need for multiple specialized devices.
3Speed
If LiDAR emits laser beams with larger time intervals, then the scanning speed is faster, but the scanning resolution becomes insufficient
Solution Approach 1:
The patent segments the laser beam emission process into multiple groups with different time intervals. Within each group, laser beams are emitted with smaller time intervals to maintain high resolution, while between groups, larger time intervals enable faster scanning. This segmentation allows the system to achieve both high speed and high resolution simultaneously.
Solution Approach 2:
The patent applies different time interval characteristics to different regions of the scanning pattern. In regions requiring high resolution, smaller time intervals are used; in regions where speed is prioritized, larger time intervals are applied. This local differentiation optimizes both scanning speed and resolution in their respective areas.
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 enhances scanning resolution and flexibility, improving detection capabilities in different application scenarios by adapting scanning density and resolution to specific regions of interest.
Implementation Method 1
receiving, by the scanning module, an echo laser beam reflected from the preset region
Implementation Method 2
receiving, by a receiving and detection module, the echo laser beam and converting the echo laser beam into an electrical signal
Data Source
AI summary
This application provides a detection method and a LiDAR detection apparatus. The detection method includes: outputting detection laser beams with a preset time delay between two adjacent emissions; receiving the detection laser beam and emitting the detection laser beam to a preset region, scanning the preset region in a preset scanning mode, and further receiving an echo laser beam reflected from the preset region, and outputting the echo laser beam; receiving the echo laser beam and converting the echo laser beam into an electrical signal; and collecting the electrical signal, and processing the electrical signal to obtain detection information of the preset region.