Single-Source Lidar With Overlapping Short And Long Range Receivers
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Solution Overview
Problem
Conventional LIDAR systems require multiple sensors with different light sources to achieve both short and long-range detection, resulting in a complex structure and high manufacturing costs, while failing to achieve high performance across all detection regions.
Innovation Solution
A single light source LIDAR system with multiple receivers, where the first receiver has a wide field of view and low resolution for short-range detection and the second receiver has a narrow field of view and high resolution for long-range detection, allowing for overlapping detection regions and adjustable lens positions for direction calibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple lidars with different light sources are used to meet both short-range and long-range requirements, then detection performance is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent applies universality by enabling a single lidar system to perform both short-range and long-range detection functions. The transmitter is configured to transmit light in multiple directions simultaneously, with different detection regions directed toward different receivers based on range requirements, allowing one system to fulfill multiple detection roles that previously required separate lidars
Solution Approach 2:
The patent applies segmentation by dividing the detection space into multiple detection regions with different characteristics (short-range region and long-range region). Each region is assigned to specific receivers that are optimized for their respective ranges, allowing the system to handle different detection requirements through spatial segmentation rather than requiring completely separate systems
2Reliability
If multiple lidars with different light sources are used to achieve both wide FOV and high resolution, then detection capability is improved, but manufacturing cost increases
Solution Approach 1:
The patent applies universality by designing a single lidar system that can achieve both wide field of view and high resolution through its multi-region detection capability. The system configures different detection regions with appropriate angular widths and resolutions, allowing one manufactured unit to replace what would traditionally require multiple specialized lidars
Solution Approach 2:
The patent applies merging by combining multiple detection functions into a single integrated lidar system. The transmitter and multiple receivers are merged into one system with unified control, allowing the combination of wide FOV capabilities and high resolution capabilities in a single manufactured unit rather than requiring separate systems
3Device complexity
If a single lidar is used for both short and long range detection, then device complexity is reduced, but it is difficult to achieve high performance across all detection regions
Solution Approach 1:
The patent applies local quality by assigning different characteristics to different detection regions within the same system. The short-range detection region is configured with appropriate angular width and resolution for nearby objects, while the long-range detection region is configured with different parameters optimized for distant objects, allowing each region to have locally optimized performance
Solution Approach 2:
The patent applies dynamics by enabling the system to dynamically switch between different detection modes and regions. The controller can selectively activate different receivers and adjust detection parameters based on the required range and situation, allowing the single system to adapt its performance characteristics to match the specific detection needs
4Measurement precision
If different detection regions are configured with different angular widths and resolutions, then detection precision is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by configuring different detection regions with locally optimized angular widths and resolutions. Each detection region is tailored to its specific range requirements, with short-range regions having wider angles and long-range regions having narrower angles with higher resolution, allowing precision to be optimized for each local detection need
Solution Approach 2:
The patent applies segmentation by dividing the overall detection space into multiple segments with different angular and resolution characteristics. This segmentation allows the system to achieve high detection precision in each region without requiring the entire system to be optimized for all conditions simultaneously, managing complexity through structured division
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 configuration enables efficient detection of objects at various ranges with reduced manufacturing costs and the ability to select appropriate operation modes, while maintaining high resolution and flexibility in detection regions.
Implementation Method 1
a transmitter configured to generate and transmit light
Implementation Method 2
a first receiver configured to receive light reflected from an object within a first detection region of a short-range
Implementation Method 3
a first receiver configured to receive light reflected from an object
Data Source
AI summary
Disclosed are a light detection and ranging (LIDAR) for both short range and long range based on a single light source, and a vehicle including the same. The lidar includes: a transmitter configured to generate and transmit light; a first receiver configured to receive light reflected from an object within a first detection region of a short range; and a second receiver configured to receive light reflected from an object within a second detection region of a long range, wherein a two-dimensional region of the second detection region at least partially overlapping the first detection region is included in the first detection region.