General Description

OBDM™ (On-Bridge Deflection Measurement)

Vertical deflection is a critical metric for the evaluation of a bridge’s load carrying capacity and, more specifically, its rigidity following a hazardous event. Smart OBDM is a simple on-bridge deflection measurement method that uses distinctively marked targets and a commercial camera.

Features

• No traffic detours or disruption during bridge structure evaluation
• No scaffolding and no cabling
• Easy to set baseline for successive inspection purpose: easy to process visual image, and easy to archive and reevaluate data
• Long-term reliability

Digital Image Analysis

Bridge Side View

Loading Test Verification

Deflections compared to Conventional Transducer Practice

Technical Description

Drone Sensing Technology Suave (Smart Unmanned Aerial Vehicle Evaluation) has been developed by integrating:

1. Advance High-Definition Camera Capturing Technology:  60 ft. away from surface of interest, a crack width of 100 microns can be  measured
2. Digital Image Processing Technology
3. Advanced GPS navigation system: the drone will follow a preprogrammed flight plan which targets those areas of a bridge suspected of having experienced deterioration
4. The control system includes a built-in collision avoidance capability

Specifications

Crack Analysis

Crack width severity is displayed as four distinct colors

Structural Condition Monitoring