Multi-Mode LIDAR Sensor Scanning Contradictions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional LIDAR systems face limitations such as low light intensity, limited range, and low frame rate, which restrict their effectiveness in scanning environments efficiently.
Innovation Solution
A LIDAR sensor system that operates in multiple modes, allowing for one-dimensional scanning using lower intensity light beams for broader areas and higher intensity, two-dimensional scanning in specific portions of the field of view, enabling enhanced detection of both large and small objects at varying distances with increased flexibility and operability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional LIDAR systems use single-mode scanning, then the system structure is simple, but the scanning range and frame rate are limited
Solution Approach 1:
The LIDAR system dynamically switches between different operation modes (one-dimensional scanning mode and two-dimensional scanning mode) based on detection needs. The optical transmitter can alternate between illuminating entire lines sequentially and illuminating specific regions of interest, enabling the system to adapt its scanning pattern in real-time to optimize frame rate for moving objects while maintaining comprehensive environmental awareness.
Solution Approach 2:
The optical transmitter is designed with multi-functionality to perform both one-dimensional line scanning and two-dimensional region scanning using the same hardware components. By controlling the illumination pattern and intensity dynamically, the single transmitter serves multiple scanning purposes, achieving high frame rates for tracking moving objects while maintaining system structural simplicity.
2Length of stationary object
If higher illumination intensity is used, then detection range is improved, but energy consumption increases
Solution Approach 1:
The system applies different illumination intensities to different spatial regions based on detection requirements. For regions of interest containing moving objects, higher illumination intensity is used to extend detection range and improve signal quality. For static background regions, lower illumination intensity suffices, reducing overall energy consumption while maintaining adequate detection capability.
Solution Approach 2:
Instead of uniformly applying high illumination intensity across the entire field of view, the system applies excessive illumination (higher intensity) only to specific sub-regions where moving objects are detected or suspected. This partial application of high intensity achieves extended detection range for critical targets while minimizing energy consumption across the full scanning area.
3Productivity
If one-dimensional scanning is used, then frame rate is high, but detection resolution in two-dimensional space is reduced
Solution Approach 1:
The field of view is segmented into multiple sub-regions, with different scanning strategies applied to different segments. One-dimensional scanning is applied to background regions to maintain high frame rates, while two-dimensional scanning is applied to regions of interest containing moving objects to achieve high detection resolution. This spatial segmentation allows simultaneous optimization of frame rate and resolution in different areas.
Solution Approach 2:
The system applies two-dimensional scanning (excessive scanning action) only to specific sub-regions where moving objects are detected, rather than applying it uniformly across the entire field of view. This partial application of intensive scanning achieves high detection resolution for critical targets while maintaining high frame rates for the overall system by using faster one-dimensional scanning for the remaining regions.
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 system achieves high-resolution scanning with increased range and frame rate, allowing for effective detection of objects at both short and long distances, improving operational flexibility compared to conventional LIDAR systems.
Implementation Method 1
an optical transmitter configured to, when operated in a first operation mode, sequentially illuminate first sub-regions of a field of view
Implementation Method 2
The LIDAR sensor further comprises an optical receiver configured to receive reflections from the first and second sub regions
Data Source
AI summary
A Light Detection And Ranging (LIDAR) sensor is provided. The LIDAR sensor includes an optical transmitter configured to, when operated in a first operation mode, illuminate first sub-regions of a field of view for one-dimensionally scanning the environment in the field of view. When operated in a second operation mode, the optical transmitter is configured to illuminate second sub-regions of the field of view for scanning the environment in a portion of the field of view. A second illumination intensity used for illuminating the second sub-regions is higher than a first illumination intensity used for illuminating the first sub-regions. The LIDAR sensor further includes an optical receiver configured to receive reflections from the first sub-regions and the second sub-regions.