LiDAR Echo Receiver Using Fused Photosensitive Groups for Ranging
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Solution Overview
Problem
Existing LiDAR systems face challenges in improving ranging capability without increasing emission power or the number of scans, leading to increased power consumption.
Innovation Solution
A signal receiving device with multiple photosensitive unit groups, a data selection module, and a calculation module that selects and processes sampling data based on pixel ranging requirements, enabling improved ranging performance without increasing transmission power or scan counts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If emission power is increased to improve ranging capability, then ranging capability is improved, but power consumption increases
Solution Approach 1:
The receiving device is divided into multiple photosensitive unit groups (first, second, third groups) that can independently receive echo light beams. Each group processes sampling data separately, allowing selective combination of results to improve ranging capability without proportionally increasing power consumption across the entire system.
Solution Approach 2:
The patent uses sampling data from only one or more photosensitive unit groups based on detection requirements, rather than processing data from all groups. This partial action approach improves ranging capability when needed while avoiding unnecessary power consumption when full capability is not required.
2Measurement precision
If number of scans is increased to improve ranging capability, then ranging capability is improved, but power consumption increases
Solution Approach 1:
Multiple photosensitive unit groups operate simultaneously and continuously to receive echo light beams. This parallel continuous operation provides improved ranging capability without requiring multiple sequential scans, thereby reducing power consumption compared to repeated scanning approaches.
3Measurement precision
If multiple photosensitive unit groups are used to improve ranging capability, then ranging capability is improved, but device complexity increases
Solution Approach 1:
The patent combines results from multiple photosensitive unit groups through data fusion. By merging the detection results from different groups, the system achieves improved ranging capability while managing complexity through integrated data processing rather than completely separate processing chains.
Solution Approach 2:
Multiple photosensitive unit groups serve universal functions of receiving and processing echo light beams. Each group can independently perform the complete detection function, allowing the system to achieve improved capability through redundancy rather than requiring specialized complex components for each group.
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
Enhances LiDAR ranging capability by selectively using sampling data from photosensitive units, improving detection accuracy and density without increasing power consumption or scan frequency.
Implementation Method 1
N photosensitive unit groups, wherein each photosensitive unit group comprises a plurality of photosensitive units, and each photosensitive unit group is configured to receive an echo light beam and output corresponding sampling data
Data Source
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AI summary
The application provides a signal receiving device, method and LiDAR system. The signal receiving device includes N photosensitive unit groups, and the photosensitive unit group includes a plurality of photosensitive units, the photosensitive unit group is used for receiving echo light beams and outputting corresponding sampling data, a data selection module is connected with the N photosensitive unit groups, and is used for selecting target sampling data according to pixel ranging requirements, a calculation module is connected with the data selection module, is used for carrying out echo data processing and calculation according to the target sampling data, obtaining pixel results, selecting the sampling data output by the fused photosensitive unit group according to the pixel ranging requirements, and determining the pixel results based on the sampling data, so that the ranging performance of the LiDAR can be effectively improved without increasing LiDAR transmitting power and number of scans.