Product
RSM-FBN(D) Non-contact Bridge Static and Dynamic Deflection Tester
Dual-channel long-distance high-speed imaging, real-time 3D dynamic precision measurement
Classification:
A high-precision, dual-channel, non-contact tester for static and dynamic deflection monitoring of bridges and large structures, featuring stereo photogrammetry, UAV-assisted calibration, and intelligent algorithms for real-time 3D displacement and vibration measurement across diverse engineering environments.
Cotnact：
Introduction
The RSM-FBN(D) non-contact deflection tester, developed as part of the National Major Instrument and Equipment Development Project in 2021, applies stereo photogrammetry principles to large-scale structures such as bridges, towers, tunnels, and cranes. With dual high-speed cameras, advanced sub-pixel algorithms, and UAV-assisted self-calibration, it delivers highly accurate real-time measurements of static and dynamic deflection, displacement, and vibration. Integrated software enables guided operation, automatic recording, real-time data output, and safety evaluation, ensuring both efficiency and reliability in field applications.
Applications / Product Usage
Dynamic and static deflection testing of bridges, towers, cranes, and other structures
2D/3D displacement testing in vibration table and accelerated pavement loading experiments
Wind tunnel testing and long-term deformation monitoring of dams, tunnels, slopes, and tall buildings
Power line galloping displacement measurement, space displacement of reticulated shell joints
Applicable standards
Regulation for Highway Bridge Load Test (JTG-T-J21-01-2015)
Technical Specification for Monitoring of Building and Bridge Structures (GB 50982-2014)
Code for Surveying of Urban Rail Transit Engineering (GB/T 50308-2017)
Code for Engineering Surveying (GB 50026-2016)
Specification for Close-range Photogrammetry (GB/T 12979-2008)
General Code for Design of Highway Bridges and Culverts (JTG D60-2015)
Technical Specification for Urban Bridge Inspection and Assessment (CJJT 233-2015)
Core advantages
Intelligent Imaging
Auto-optimized measurement points and image focus evaluation for maximum precision.
High Accuracy
Achieves real-time 3D deformation measurement with up to 1/250,000 field-of-view precision, even at kilometer-scale distances.
Multi-scene Adaptability
Supports close-range (tunnels) and long-range (bridges, towers) applications, with UAV-assisted calibration for feature-poor structures.
Industrial-grade Design
Engineered aluminum housing, lightweight yet durable; multifunction precision turntable achieves 1.5 arc-second angular measurement.
Extended Operation
Professional power solutions for long-duration field monitoring and testing.
Advanced Algorithms
Upgraded 3D calibration algorithms, fast feature matching, image enhancement, and sub-pixel accuracy ensure reliable and precise results.
Technical Parameter
|
Model |
RSM-FBN(D) |
|
Working Distance |
0.01 m – 1000 m |
|
Field of View (FOV) |
0.01 mm – 1000 m |
|
Resolution |
1/250,000 (FOV) |
|
Measurement Resolution |
0.001 mm |
|
Measurement Accuracy |
±0.015 mm (working distance 10 m) ±0.5 mm (working distance 100 m) ±5 mm (working distance 500 m) |
|
Video Frame Rate |
≥500 Hz |
|
Angular Measurement Accuracy |
≤1.5″ |
|
Distance Measurement Accuracy |
±50 mm (at 500 m distance) |
|
Dynamic Measurement Points |
3D, ≥50 points @300 Hz |
|
Static Measurement Points |
Unlimited |
|
Measurement Mode |
Markerless under natural light; targets required at night |
|
Leveling Method |
No leveling required |
|
Calibration Methods |
Camera-IMU fusion calibration, angle difference method, UAV-assisted calibration, automatic scene feature recognition calibration |
|
Detection Modes |
On-site mode or recorded condition video |
|
Measurement Parameters |
3D displacement, coordinates, stretching, spacing, impact factor, frequency, damping ratio, attenuation coefficient |
|
Auxiliary Functions |
Adaptive image enhancement,Image quality improvement,Automatic analysis of maximum and minimum deflection,Image quality evaluation,Assisted focusing,Assisted focusing,Intelligent point selection,Base vibration suppression,Automatic point recovery,Power spectral density,Digital filtering,Image grayscale filtering,Auto-generation of Excel and test reports |
|
Compatible Lenses |
50 mm / 75 mm – 200 mm / 200 mm – 500 mm |
|
Main Unit Weight |
20 kg |
Market Case
Downloads
FAQs
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RSM-FBN(D) Non-contact Bridge Static and Dynamic Deflection Tester
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