Segmented Avalanche Photodiode LiDAR for Interference Mitigation
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Solution Overview
Problem
Current light detection and ranging (LiDAR) systems face inefficiencies and inaccuracies due to interference and complex processing in solid-state systems, and physical limitations in mechanical systems, which affect object identification and response accuracy, especially in varying environmental conditions.
Innovation Solution
Positioning an avalanche photodiode detector between non-avalanche photodiode detectors and using a photon controller to selectively activate detectors for precise alignment and operation, optimizing the system for improved reliability, accuracy, and efficiency by determining photon alignment and controlling power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If solid-state LiDAR systems are used, then integration and miniaturization are improved, but interference and processing complexity increase
Solution Approach 1:
The detection system is segmented into multiple photodiode detectors arranged in a specific geometric pattern, with each detector handling specific spatial zones. This segmentation distributes the detection workload and reduces processing complexity while maintaining compact form factor.
Solution Approach 2:
An intermediary processing layer is introduced that receives signals from multiple photodiode detectors and performs coordinated processing. This intermediary structure manages the complexity of handling signals from multiple detectors while enabling the compact solid-state architecture.
2Reliability
If mechanical LiDAR systems are used, then object detection capability is improved, but physical limitations and response time worsen
Solution Approach 1:
The patent replaces mechanical scanning components with a solid-state array of photodiode detectors. The geometric arrangement of detectors in specific patterns enables spatial detection without mechanical movement, thereby improving response time while maintaining reliable object identification capability.
3Reliability
If multiple photodiode detectors are activated simultaneously, then detection coverage is improved, but power consumption increases
Solution Approach 1:
The system implements periodic or sequential activation of photodiode detectors rather than continuous simultaneous activation. The controller activates detectors in a coordinated manner based on detection needs, reducing overall power consumption while maintaining comprehensive detection coverage through systematic scanning of detector zones.
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 the reliability and accuracy of object detection and ranging by mitigating interference and optimizing detector alignment and power usage, leading to improved performance and efficiency in diverse environmental conditions.
Implementation Method 1
positioning an avalanche photodiode detector between at least one pair of non-avalanche photodiode detectors
Implementation Method 2
with each detector connected to a photon controller configured to selectively activate detectors to determine an alignment of photons
Data Source
AI summary
A light detection and ranging system can have an avalanche photodiode detector positioned between at least one pair of non-avalanche photodiode detectors with each detector connected to a photon controller. The photon controlled may selectively activate one or more detectors to determine an alignment of photons emitted by one or more emitters.