Advanced 3D Imaging Revolutionizes Drone Vibration Analysis
GILCHING, Germany, Oct. 7, 2025 – Multicopter drones have transformed numerous industries with their exceptional agility and hovering capabilities. However, these unmanned aircraft face significant vibration challenges that can compromise performance and safety. Researchers at Hiroshima University have now developed an innovative solution using stereo imaging technology to address these concerns effectively.
The Vibration Challenge in Multicopter Operations
Multicopters generate substantial vibrations during flight operations due to their complex rotor systems. These vibrations negatively impact flight stability, reduce operational duration, and accelerate component wear. Traditional measurement methods often fall short in providing comprehensive vibration analysis across entire structures.
Groundbreaking Non-Contact Measurement Approach
The Hiroshima University research team implemented a sophisticated model-tracking 3D-Digital Image Correlation (DIC) system. They utilized two Mikrotron EoSens 2.0CXP 2 cameras positioned strategically on the ground. This configuration captured detailed stereo images at 500 frames per second while a DJI Mini 4 Pro quadcopter hovered two meters above.
Precision Imaging Setup and Configuration
The experimental setup featured meticulous preparation. Engineers applied a random pattern to the drone’s surface and attached twelve specialized markers for enhanced tracking accuracy. The Mikrotron cameras, equipped with 50mm lenses and supported by LED lighting, delivered high-resolution 8-bit RGB images. These images were transmitted via a CXP-12 quad frame grabber to a high-performance computing system for processing.
Advanced 3D Modeling and Analysis
Researchers generated comprehensive 3D point clouds using ZEISS scanning technology, initially capturing nearly one million data points. They optimized this data to 3,518 measurement points for efficient frequency analysis up to 250 Hz. The system produced color-coded visualizations that precisely identified vibration hotspots and their intensity levels across the drone’s structure.
Significant Advantages Over Traditional Methods
This non-contact measurement approach offers substantial benefits compared to conventional accelerometers and strain gauges. It eliminates physical attachment limitations and doesn’t interfere with the drone’s flight characteristics. The method provides complete spatial vibration data rather than limited point measurements, enabling more comprehensive structural analysis.
Practical Applications and Future Development
The validated measurement technique has immediate applications in drone manufacturing, maintenance, and safety certification. It enables engineers to identify potential structural issues before they become critical failures. The research team plans to enhance their system further, aiming to provide even deeper insights into flight dynamics and structural behavior under various operating conditions.
Industry Implications and Technology Integration
This advancement represents a significant step forward in non-destructive testing methodologies. The integration of high-speed imaging with advanced digital correlation algorithms creates new possibilities for real-time structural health monitoring. Manufacturers can utilize this technology to improve drone designs and extend operational lifespans through proactive maintenance strategies.
About the Technology Providers
Mikrotron, now operating as a brand of SVS-Vistek GmbH following their 2022 integration, specializes in robust high-speed imaging solutions. The company’s cameras are widely recognized for their exceptional performance in industrial and scientific applications. As part of TKH Vision’s technology ecosystem, Mikrotron continues to drive innovation in high-speed imaging for advanced research and industrial applications worldwide.
Frequently Asked Questions
How does 3D-DIC vibration measurement differ from traditional methods?
Unlike contact-based sensors, 3D-DIC provides full-field vibration data without physical attachment, preserving flight characteristics and offering comprehensive spatial analysis.
What frame rate is necessary for accurate drone vibration analysis?
The system captures images at 500 frames per second, sufficient to analyze vibrations up to 250 Hz with high precision and temporal resolution.
Can this technology be applied to other types of aircraft?
Yes, the non-contact measurement approach is adaptable to various aircraft and rotating machinery where vibration analysis is critical for performance and safety.
What are the main advantages of using stereo imaging for vibration measurement?
Stereo imaging enables precise 3D motion tracking and provides comprehensive spatial vibration data across the entire structure simultaneously.
How does the system handle different environmental conditions?
The experimental setup includes controlled LED lighting to ensure consistent image quality, though outdoor applications may require additional environmental considerations.
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