LiDAR Simulation Device Using Time-Delayed Light Signals
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Solution Overview
Problem
Current LiDAR light measurement systems face challenges in testing, particularly in implementing defined distance measurements and simulating moving environments, which are essential for quality control and application development, especially in autonomous driving, due to space and environmental constraints.
Innovation Solution
A simulation device generates time-delayed light signals using an adjustable delay section and photodetectors, allowing for the creation of a simulated moving environment that can be adjusted electronically, enabling the LiDAR system to interpret these signals as objects at varying distances, thus reducing the need for extensive physical space and controlled environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a large physical measuring section is used to test LiDAR at defined distances, then measurement accuracy is improved, but device complexity and space requirements increase significantly
Solution Approach 1:
The patent creates a virtual copy of the measurement environment using a light field generator that reproduces optical paths mathematically. Instead of building physical measuring sections of various lengths, the system generates synthetic light fields that simulate reflections from objects at different distances, eliminating the need for complex physical infrastructure while maintaining measurement accuracy
Solution Approach 2:
The patent replaces the mechanical/physical measuring section with an optical-computational system. The light field generator uses controlled light emission and computational algorithms to create virtual optical paths, substituting physical distance with controlled light propagation time and pattern recognition
2Adaptability or versatility
If multiple light sources are arranged in a light bar cylinder to simulate 3D environments, then adaptability of testing scenarios is improved, but device complexity increases
Solution Approach 1:
The patent designs the light field generator with multiple light sources that can be independently controlled to serve multiple functions: simulating objects at different distances, creating various reflection patterns, and reproducing different environmental conditions. This universal system replaces the need for multiple specialized testing setups
Solution Approach 2:
The patent implements dynamic control of the light sources through electronic switching and intensity modulation, allowing the system to adapt testing scenarios in real-time without physical reconfiguration. The computer-controlled light field generator can dynamically create different virtual environments by adjusting light emission patterns
3Ease of operation
If photodetectors and light sources are positioned in the same plane as the LiDAR sensor, then ease of operation is improved, but measurement precision may be affected
Solution Approach 1:
The patent introduces a computer-controlled light field generator as an intermediary between the LiDAR sensor and the test objects. This intermediary creates controlled light fields that mediate the interaction, allowing the sensor to measure virtual objects without requiring complex physical arrangements. The light field generator acts as a bridge that simplifies positioning while maintaining precision through computational control
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 solution enables cost-effective and time-efficient functional and quality control of LiDAR systems, allowing for scalable simulation of moving environments and adaptive testing scenarios, including 3D setups, thereby supporting the development of advanced driver assistance systems.
Implementation Method 1
a light receiver which receives the light signal from the light transmitter and generates an electrical signal from the light signal
Implementation Method 2
A simulation device for a rotating LiDAR light measurement system with a LiDAR light receiving sensor (1) which rotates 360° around an axis
Data Source
Figure 1
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Figure 4
AI summary
The invention relates to a simulation device for a rotating LiDAR light measurement system with a LiDAR light receiving sensor (1), wherein the LiDAR light receiving sensor (1) rotates 360° about an axis (11), wherein a light emitter strip (14) is provided in the plane of the LiDAR light receiving sensor (1).