LiDAR Signal Receiver with Selective Pixel Sampling for Longer Range
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge is to improve the ranging capability of LiDAR without increasing emission power or the number of scans, as these approaches lead to higher power consumption.
Innovation Solution
A signal receiving device with N photosensitive unit groups, a data selection module, and a calculation module that selects and processes sampling data to determine pixel results, enhancing ranging capability without increasing transmission power or scanning times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the emission power of the emission device is increased to improve ranging capability, then the ranging capability is improved, but the overall power consumption of the LiDAR increases
Solution Approach 1:
The receiving device is divided into N photosensitive unit groups, each independently receiving echo light beams and outputting sampling data. This segmentation allows selective use of multiple receiving paths to improve detection capability without proportionally increasing power consumption, as the system can dynamically select which groups to activate based on ranging requirements.
Solution Approach 2:
The system dynamically selects target sampling data from different photosensitive unit groups based on pixel ranging requirements. The data selection module adaptively chooses which photosensitive units to use for each pixel, optimizing the balance between ranging capability and power consumption in real-time operation.
2Measurement precision
If the number of scans is increased to improve ranging capability, then the ranging capability is improved, but the overall power consumption of the LiDAR increases
Solution Approach 1:
Multiple photosensitive unit groups perform parallel or sequential sampling of echo light beams simultaneously or in overlapping time windows. This preliminary multi-sampling approach consolidates what would traditionally require multiple complete scan cycles into a single scan period, improving ranging capability without increasing the total number of scans and reducing associated power consumption.
Solution Approach 2:
The N photosensitive unit groups continuously receive and process echo light beams, maintaining constant detection capability throughout the scanning period. This continuous parallel processing eliminates gaps in data collection, achieving improved ranging precision without requiring additional scan cycles that would increase power consumption.
3Measurement precision
If multiple photosensitive unit groups are used to improve ranging capability, then the ranging capability is improved, but the device complexity increases
Solution Approach 1:
Multiple photosensitive unit groups perform the same function of receiving echo light beams and outputting sampling data. This functional redundancy allows the system to improve ranging capability through parallel processing while maintaining a modular, scalable architecture where additional units follow the same design pattern, limiting the type of complexity increase to manageable replication rather than fundamentally different system components.
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 solution effectively improves LiDAR ranging performance by selecting and processing sampling data based on pixel requirements, optimizing detection accuracy and field of view without increasing power consumption or scanning times.
Implementation Method 1
N groups of photosensitive units, each group including a plurality of photosensitive units, respectively receiving an echo light beam and outputting corresponding sampling data
Data Source
AI summary
A signal receiving device, a method, and a LiDAR system are provided. The signal receiving device includes N photosensitive unit groups, each photosensitive unit group including a plurality of photosensitive units. Each 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, and 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.