Lidar Receiving Field of View Dynamics for Synchronization Reduction
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Solution Overview
Problem
Current lidar systems require complex control systems to accurately and synchronously match emitting and receiving fields of view, leading to increased complexity and costs, especially as resolution increases.
Innovation Solution
A laser system that includes a light emitting assembly generating emitting signals to sequentially emit multiple groups of emitted light, and a receiving end assembly that converts reflected light into output signals, where the receiving field of view changes position and/or shape according to designated rules, ensuring the emitting field of view is located within the receiving field of view during a preset duration, with the receiving field of view area being at least twice the size of the emitting field of view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple emitting fields of view are used to improve resolution, then measurement precision is improved, but device complexity increases due to requiring multiple receiving fields of view and complex synchronous control
Solution Approach 1:
The patent divides the receiving field of view into multiple virtual receiving fields through software processing rather than using multiple physical receiving assemblies. The single receiving assembly processes different time windows of the same physical field to create multiple virtual receiving fields, achieving segmentation effect without physical multiplication of components.
Solution Approach 2:
The patent creates virtual copies of receiving fields through software processing of temporal data. By processing different time windows of reflected light from a single physical receiving assembly, it generates multiple virtual receiving fields that function as if they were physical copies, eliminating the need for multiple physical receiving assemblies and their associated control systems.
2Measurement precision
If high-speed synchronous matching between emitting and receiving fields of view is implemented, then measurement precision is improved, but device complexity and costs increase significantly
Solution Approach 1:
The patent replaces the mechanical/optical synchronous control system with a software-based temporal processing system. Instead of using complex control systems to physically coordinate emitting and receiving fields of view, the invention uses software to process temporal data from a single receiving assembly, substituting mechanical synchronization with computational processing.
Solution Approach 2:
The patent performs preliminary data collection by continuously receiving reflected light over extended time windows before processing. By collecting all necessary light data in advance within each time window and then processing it to extract multiple virtual fields, the system eliminates the need for real-time synchronous control during the measurement phase.
3Ease of operation
If the receiving field of view area is increased to be at least twice the emitting field of view area, then ease of operation is improved by reducing synchronization requirements, but device complexity may increase
Solution Approach 1:
The patent implements dynamic field of view configuration where the receiving field of view area and position can be adjusted based on operational requirements. The system can dynamically change the effective receiving area by modifying processing parameters such as time window duration and spatial integration ranges, allowing adaptation to different measurement scenarios without physical reconfiguration.
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 approach reduces the need for high-speed, accurate synchronization of emitting and receiving fields of view, thereby decreasing the complexity and costs of the system while maintaining resolution.
Implementation Method 1
a receiving end assembly, configured to convert at least one group of reflected light formed by reflecting the emitted light at at least one target object in a target scene into an output signal; where a type of the output signal is electrical signal
Data Source
AI summary
A laser system and a laser measurement method are provided. The laser system may include: a light emitting assembly, configured to sequentially emit multiple groups of emitted light within a current frame scanning duration; and a receiving end assembly, configured to convert at least one group of reflected light into an output signal; where within a scanning duration, a position of a receiving field of view of the receiving end assembly in the target scene changes and/or a shape of the receiving field of view changes; from an emission start moment, an emitting field of view of the light emitting assembly is located in the current receiving field of view within a preset receiving duration, and an area of the receiving field of view is greater than or equal to twice an area of the emitting field of view.