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FAQs
NEUBRESCOPE is a optical fiber distributed sensing system. It offers the highest accuracy (plus-minus 25 micro strains) and spatial resolution (10 cm) on the market
NEUBRESCOPE can precisely measure strain/temperature distribution. It has numerous advantages over traditional systems, including:
1. real time monitoring without stopping technologial system
2. especially suitable for overall monitoring of large structures
3. precise distributed measurements along the fiber to detect the location of changes in strain/temperature profiles
4. explosion-safe (can be directly installed even in the flammable liquids / gases)
5. insensitive to interface from electromagnetic wave / lightning / electric power surge
6. can be simultaneously used as a communication wire and sensor
7. reduce total maintenance inspection cost
Numerical analisys might be used to reconstruct non-directly measurable quantities (like thickness, or mechanical and thermal load).
NEUBRESCOPE can serve as a key component of structural health monitoring system. (monitoring oil wells, power plants, civil engineering structures). The Structural Health Monitoring predicts failures by detecting the abnormal strains or temperature changes/patterns.
How can you get the strain information or the stress variation in places inaccessible for optical fiber?
We can monitor the parts where we do not attach the optical fiber by applying numerical analysis and mathematical modelling. We can also estimate unknown quantities by means of advanced inverse-analysis techniques.
What is the principle of the optical fiber sensing?
NEUBRESCOPE emits pulsed Pump laser and Probe laser into the optical fiber. NEUBRESCOPE obtains strain or temperature information from fiber by detecting the frequency shift of the Stimulated Brillouin Scattering. Frequency peak shows the strain (or temperature) magnitude, and its location is calculated from light round-trip time.
What is the spatial resolution?
The Spatial Resolution denotes the smallest spatial (distance) step, along the fiber, at which measurement data is available.
How do you differentiate strain and temperatue data obtain from optical fiber?
We gather all data and calculate separately strain and temperature, using fiber attachment (deployment) schema.
What is the longest measuring distance for NEUBRESCOPE?
It strictly depends on the spatial resolution used. For 10 cm resolution, 1 km distance can covered. This range increases up to 20 km for spatial resolution of 1 m.
Can it detect the gas leakage?
Indirectly. Instrument measures strain and temperature profiles along gas pipeline and allowing us to detect and localize places where leakage occures.
Can it detect the cracks in piping systems?
Indirectly. NEUBRESCOPE detects local strain concentrations occuring before crack opening. We already have experimental results confirming that NEUBRESCOPE can detect localized cracks in concrete beams/structures.
Can we attach optical fiber ourselves?
The fiber attachment requires technical know-how and installation equipment. In general, it is not recommended.
The piping has coatings. Can stress changes be detected at all?
Yes. We have the experimental results demonstrating this.
Can we use NEUBRESCOPE with any type of the fiber?
Genrally yes, however, we highly recommend using fibers from our lineup, as they are designed for specific applications and attachment procedures (preventing from generating excessive strains or fiber twisting).
