24/7 Non-Contact Structural Health Monitoring
Powered by advanced oblique-axis Digital Image Correlation (DIC) technology, the Online Visual Tracking System combines high-resolution imaging, intelligent target recognition, and sub-pixel measurement algorithms to deliver continuous, non-contact structural displacement and deformation monitoring.
By automatically capturing and tracking passive targets installed on monitored structures, the system accurately measures horizontal and vertical displacement without requiring physical contact or manual intervention. Measurement data is processed in real time and transmitted to a cloud-based platform, enabling live visualization, quantitative analysis, historical data review, and intelligent alarm notifications.
Designed for 24/7 continuous monitoring, the system provides reliable and actionable insights into structural behavior, supporting safety assessment and early warning across a wide range of infrastructure applications, including bridges, tunnels, dams, slopes, and other critical engineering structures.
Application Fields
Bridge: Deflection, vibration frequency, and amplitude
Tunnel: Settlement, clearance changes, cracks, etc.
Slope: Settlement, cracks, collapse
Railway and Road: Displacement and vibration
Reservoir and Dam: Settlement, cracks, collapse
Large Structures: Settlement, tilt, etc.
Mine: Settlement, cracks, collapse
Trusses and Derricks: Settlement, cracks, collapse
Large-Span Structure: Settlement, tilt, cracks, etc.
Geological Hazard: Settlement, tilt, cracks, etc.
Product Advantages
1. Easy Operation
- Intelligent target recognition and automatic measurement eliminate the need for manual intervention.
- Automatic cloud data transmission enables real-time access through web and WeChat Mini Program clients.
- Configurable alarm thresholds provide timely notifications of potential structural anomalies.
2. Comprehensive Data Analysis
- Synchronized multi-point displacement measurement with simultaneous 2D horizontal and vertical displacement visualization.
- Provides multiple analytical outputs, including structural deflection, impact factor, power spectrum, and interval frequency.
- Supports comprehensive structural behavior assessment through real-time measurement and data analysis.
3. Flexible Installation
- Quick screw-based installation with multiple mounting options, including wall, pole, and tripod mounting.
- Passive targets require no external power supply, simplifying deployment and reducing installation complexity.
4. Reliable Performance
- Advanced algorithms and integrated hardware design help mitigate interference from rain, snow, fog, temperature fluctuations, changing lighting conditions, target occlusion, and mechanical vibration.
- Intelligent compensation and target reacquisition help maintain measurement stability and continuity under complex environmental conditions.
Technical Principle
The Online Visual Tracking System is deployed at a stable reference location, while passive targets are installed on the monitored structure to serve as measurement points.
Using high-resolution image acquisition, Digital Image Correlation (DIC), and sub-pixel target recognition algorithms, the system continuously tracks changes in target positions and calculates horizontal and vertical displacement with high precision, without physical contact with the monitored structure.
Measurement data is automatically processed and transmitted to the cloud platform via the network. Users can remotely access real-time measurements, monitor displacement trends, and review historical data through the web platform or WeChat Mini Program, enabling continuous, 24/7 structural displacement monitoring.
Solutions
Bridge Structural Health Monitoring
Application Cases
