Two Dimensional Transmitter Array LiDAR Scanning
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Solution Overview
Problem
Existing LiDAR systems face challenges in achieving an ultra-wide field of view (FOV) and customizable scanning patterns while maintaining energy efficiency and compactness, particularly when mounted in small spaces, such as vehicles, due to the limitations of multiple transmitters and high energy consumption.
Innovation Solution
A LiDAR system utilizing a two-dimensional transmitter array with multiple transmitter groups optically coupled to a light scanner, where a control device selectively controls the transmitter groups to emit beams vertically and horizontally, allowing for customizable scanning patterns and energy-saving configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple transmitter groups are used to achieve ultra-wide FOV and customizable scanning patterns, then the field of view and scanning flexibility are improved, but the energy consumption and device complexity increase
Solution Approach 1:
The transmitter array is divided into multiple independently controllable transmitter groups (e.g., first, second, third, and fourth transmitter groups), each capable of being selectively activated. This segmentation allows the system to achieve ultra-wide FOV and customizable scanning patterns by activating only the necessary transmitter groups for specific scanning requirements, rather than requiring all transmitters to operate simultaneously.
Solution Approach 2:
The control device dynamically selects and activates specific transmitter groups based on real-time scanning requirements and energy efficiency considerations. This dynamic control enables the system to adapt scanning patterns to different application scenarios while managing energy consumption and device complexity by activating only the necessary transmitter groups.
2Area of stationary object
If multiple transmitter groups are deployed at different positions, then the field of view coverage is improved, but the energy consumption increases
Solution Approach 1:
Instead of activating all transmitter groups simultaneously to achieve full FOV coverage, the control device activates only the necessary subset of transmitter groups required for the current scanning task. This partial action approach maintains adequate FOV coverage while significantly reducing energy consumption by keeping unnecessary transmitters in standby mode.
Solution Approach 2:
The control device periodically activates different transmitter groups based on scanning requirements, allowing transmitters to operate in alternating cycles rather than continuously. This periodic activation pattern reduces overall energy consumption while maintaining the capability to achieve comprehensive FOV coverage when needed.
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 an ultra-wide FOV beyond 120 degrees and customizable scanning patterns, enhancing energy efficiency and reducing the overall cost by selectively controlling transmitter groups and using different laser sources for specific perception requirements.
Implementation Method 1
The light scanner is configured to steer the transmission beams both vertically and horizontally to a field-of-view (FOV)
Implementation Method 2
Each transmitter group of the plurality of transmitter groups comprises a plurality of transmitters
Implementation Method 3
The light detector detects the return light pulse
Data Source
AI summary
A LiDAR system having two-dimensional transmitter array is provided. The LiDAR system comprises a light scanner, and a plurality of transmitter groups optically couplable to the light scanner. Each transmitter group of the plurality of transmitter groups comprises a plurality of transmitters. At least two transmitter groups of the plurality of transmitter groups are disposed at different positions with respect to the light scanner, such that scanning areas corresponding to the at least two transmitter groups are different. The LiDAR further comprises a control device configured to selectively control one or more of the plurality of transmitter groups to emit transmission beams toward the light scanner. The light scanner is configured to steer the transmission beams both vertically and horizontally to a field-of-view (FOV), and receive return light formed based on the steered transmission beams.