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The feature and advantages:
OFDR technology utilizes standard single-mode optical fiberas a sensor to demodulate the Rayleigh scattering frequency shift at various locations within the fiber. Any section of the fiber can serve as a sensing unit. Therefore, compared to traditional single-point measurements, it allows for along a certain length.
High-definitiondistributed sensing — thousands of measurements withsub-millimeter gagepitch.
Real-timemultichannel system with each channel supporting up to 100 mof high-def sensing fiber.
Flexible,lightweight and easy-to-install sensors reduce timeto first measurement.
Passive, corrosion resistant, dielectric sensorsgo where other sensors can’t — in bends, corners, embedded insidematerials.
Longsensor life — no drift or recalibration, cycle counts>107.
Installation:
DOFS sensors are primarily installed along the critical structural elements of the transmission tower structure, such as lower most level, the four legs and beams surrounding the tower. Sensors are affixed on the structure by epoxy along the longitudinal direction, ensuring direct strain transfer.
Data Acquisition: The obtained strain data is transmitted in real-time to a server for analysing the pattern changes. The sensors continuously monitor the strain variations inthese structural areas.
Data Processing and Analysis: Raw data from the interrogator is processed to convert Brillouin frequency shifts to strain measurements. Temperature compensation is applied to isolate strain effects from thermal influences. Settlement Analysis: Once any abnormal changes are detected, such as a sudden increase or decrease instrain of a particular component, the prediction of structural settlement or severe deformation can be made.
UI & Alert System: Threshold values for strain or calculated settlement can be set. Automated alerts are triggered when these thresholds are exceeded, allowing for prompt intervention. Visualization tools provide graphical represent ations of strain distribution and settlement patterns.
