Ommatidia’s Q1S Laser Radar systems, leveraging 3D Laser Radar in structural health monitoring, are playing a crucial role in ensuring the safety and longevity of civil infrastructure. In collaboration with ADIF, Spain’s railway infrastructure management company, Ommatidia has hard-mounted 4x units of Q1S Laser Radar to a bridge of a high-speed railway line connecting Madrid and Málaga. The Q1S are advanced NDT long-range, multi-beam laser radars specifically designed to capture even the tiniest deflections of the bridge under the load of the passing train, including those at low-frequency ranges. Each unit emits 128 measurement beams, providing structural health monitoring engineers with continuous stream of data for analysis of bridge’s dynamic behavior. By detecting potential issues early, the system enables predictive maintenance to prevent costly failures and ensure long-term structural integrity.
The Q1S system offers non-contact measurements of sub-millimeter deflections at 128 points on the bridge deck simultaneously over a five-year period. Additionally, it monitors vibrations at the same points, offering a comprehensive and real-time perspective on the bridge’s overall health. The data collected supports a digital twin model, which enables early problem detection and facilitates proactive maintenance planning. By integrating this technology, ADIF can identify and address potential structural concerns before they escalate, optimizing infrastructure management and enhancing railway safety.
This is a good example of how Ommatidia’s Q1S can be an invaluable tool to ensure the safety of civil constructions. Ready for reliable long-term outdoor operation, easy to install, with IP65 rating and cost-effective, our Q1S is set to transform the landscape of preventive maintenance.
For more information on this case study please refer to “High-Sensitivity Vibration Monitoring of La Marota Viaduct Using a Novel 128-Channel Laser Radar System”
Abstract: In this study, we employed a novel system combining massively parallel FMCW Laser Radar and Laser Doppler Vibrometry to monitor and analyze the structural vibrations of La Marota Viaduct, as part of a multi-year structural health monitoring project for high-speed railway infrastructure near Almodóvar del Río in southern Spain. The system features 128 parallel channels capable of non-contact velocity and displacement measurements with 40kHz sampling rate, allowing the real-time capture of dynamic structural behavior across a wide range of frequencies from a single installation point. The optical measurements were in good agreement with the numerical models and the accelerometer and strain gauge results. The exceptional sensitivity of the interferometry-based technique, particularly in low-frequency domains below 2 Hz, combined with the large number of measurement points offers the potential for superior model performance compared to traditional accelerometer setups. The high resolution and rapid acquisition capabilities of the system facilitated detailed analysis of the bridge’s vibrational modes, providing insights into structural health and potential areas of concern.
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