Observer
Digitex Data Analysis and OMA Suite
- Overview
- Description
- Specifications
- Key Features
- Applications
Observer® is Digitex Systems’ most advanced post‑processing software suite for Structural Health Monitoring (SHM). In a few words, this post-processing software provides engineers, researchers, and operators with a powerful platform for advanced signal analysis, Operational Modal Analysis (OMA), and comprehensive reporting. Additionally, the Observer builds upon the Vista platform with extended analysis capabilities and new OMA algorithms. Additionally, it provides a professional geometry editor and advanced 3D visualization, making it the ultimate tool for extracting actionable insights from monitoring data.
Most importantly, the Observer supports both permanent monitoring campaigns and ambient vibration measurements, while allowing users to identify modal parameters of structures in a professional, automated, and user‑friendly manner. On top of that, the Observer post-processing software delivers a best‑in‑class solution for understanding the dynamic behaviour of infrastructure such as bridges, dams, tunnels, buildings, pipelines, as well as different industrial assets.
Observer combines professional data viewing, filtering, and signal processing with advanced OMA methods and geometry‑based visualization. With this in mind, we designed the interface to be modern, logical, and customizable, intending to simplify complex analysis workflows for SHM specialists. Users can import MiniSEED or ASCII files from Digitex Sentry devices or third‑party systems. On the other hand, you’ll get an option for configuring extensive processing options, and carry out both basic analysis (FFT, PSD, spectrograms, auto‑correlation), including advanced OMA workflows.
Most importantly, the OMA functionalities include support for multiple algorithms (FDD, EFDD, FSDD, SSI‑Data, SSI‑Covariance, and PLSCF), stabilization diagrams, and SVD‑based picking. Also, the Observer post-processing software provides frequency‑domain and time‑domain OMA analyses, with interactive charts such as SDOF Bell functions, auto‑correlation plots, fitted exponential decay, singular value plots, in addition to the frequency‑damping clustering.
Technical Specifications
File Import | Files in MiniSEED or ASCII format (compatible with other measurement systems) |
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Signal Processing In the Time Domain | Detrending: Mean, Linear Trending, Polynomial; Decimation: Half, Quarter, Eight; Filtering: Butterworth, Chebyshev1, Chebyshev2, Bessel, Eliptic, Lowpass, Bandpass, Highpass; Integration: Acceleration, Velocity, Displacement; Auto Correlation, Cross Corellation |
Signal Processing in the Frequency Domain | FFT, PSD: Hanning, Hamming, Blackman, Bartlett Windows |
Response Spectrum Analysis | Damping Ratios: 1%, 2%, 3%, 4%, 5%, and 10% |
Operational Modal Analysis (OMA) | Multiple Available OMA Methods for Determining Dynamic Modal Parameters (Natural Frequencies, Modes, Shapes, Damping Ratios): FDD, EFDD, FSDD, SSI‑Data, SSI‑Covariance, including PLSCF |
Animation and MAC Verification Matrix | 3D animation of Different Modal Shapes for Selected Frequency and MAC Verification Matrix |
Key Features of the Observer®
- Advanced Signal Processing: Time‑domain filtering (Butterworth, Chebyshev, Bessel, Elliptic), detrending, decimation, FFT/PSD, spectrograms, including a response spectrum analysis.
- Comprehensive OMA Methods: Support for FDD, EFDD, FSDD, SSI‑Data, SSI‑Covariance, as well as PLSCF for additional robust modal parameter estimation.
- OMA Visualization & Picking: Singular Value Decomposition (SVD) diagrams, stabilization charts, frequency picking, on top of the damping estimations.
- Geometry‑Based Analysis: The Observer post-processing software also has an advanced 3D geometry editor with point, line or surface modelling, channel association, along with import/export in proprietary or Excel formats.
- 3D Mode Shape Animation: High‑quality animations of mode shapes with rotation, zoom, scaling, and also colour intensity visualization; Also, animations can be exported to GIF.
- Multi‑Setup OMA: Supports single or multi‑setup campaigns with reference sensors for large structures.
- OMA Verification: MAC matrix generation between methods, comparative model animations, and, most importantly, cross‑validation of results.
- Statistical & Informational Analysis: Auto‑correlation, PSD, probability density, normal probability plots, STFT magnitude heatmaps, and more.
- Comprehensive Reporting: Generate configurable PDF reports with signal metadata, statistics, charts, OMA results, animations, and user details.
- Integration with Voyager: Export *.ovy files for use with the Voyager OMA plugin to enable continuous real‑time modal tracking.
- Highly Customizable UI: User‑friendly interface, customizable chart layouts, and up to advanced property settings for all methods and filters.
The Observer post-processing software is Digitex Systems’ flagship post‑processing tool, designed for in‑depth analysis of SHM data. Also, we have deployed it on projects worldwide where accurate modal analysis is essential for the safety, reliability, and performance of infrastructure. Lastly, the Observer enables engineers to detect modal properties, validate structural models, and consequently, monitor changes over time. Typical applications include:
- Bridges – modal testing as well as continuous monitoring
- Dams and hydropower plants – vibration assessment including safety verification
- High‑rise buildings – dynamic response to wind besides seismic events
- Tunnels and pipelines – resonance and stability analysis
- Mines and industrial plants – vibration safety, while optimizing the process
Latest Observer Updates
Ready to Elevate Your Project?
After all, Digitex Systems deeply nurtures the partnership with engineers, researchers, and asset managers worldwide. That’s why Digitex Systems delivers reliable, field-proven Structural Health Monitoring solutions.
Additionally, if you are planning a new monitoring system or upgrading an existing installation, our team provides expert guidance tailored to your project’s requirements.
Lastly, feel free to check our solutions focused on accuracy, reliability, and long-term performance backed by decades of experience in dams, bridges, tunnels, mines, as well as high-rise infrastructure.
