Three Times Better

Technology that crosses borders

EpsilonRebar

The world’s first monolithic strain sensor

EpsilonRebar enables geometrically continuous measurement of strains of the surrounding medium (e.g. soil, concrete) over distances of up to 120 km. It takes the form of a composite rebar of any diameter. It is designed for direct embedding into the structural member, concrete or soil.

Epsilon Rebar - Czujniki światłowodowe

3DSensor

World’s first shape sensor for geotechnics and civil engineering

3DSensor is a sensor used to determine the vertical and horizontal displacements of building structures over distances up to 120 km. It is designed for direct placement in the measured medium, for example in soil or concrete. It enables the user to visualise the displacements of the medium in 3D space along its entire length.

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Sensors of the Composite-DFOS family: Epsilon Rebar and 3DSensor is a:
  • innovative technologies: Total Range, Monolithic Structure and Measurement Identity
  • direct measurement of strains and displacements
  • low sensor cost
  • easy and fast installation
  • high mechanical and chemical resistance
  • resistance to electromagnetic interference
  • unrivalled measuring range and excellent integration with the monitored medium (structure)
  • reliability
  • cooperation with any measuring technique (Rayleigh, Brillouin, Raman)
Application
  • Structural Health Monitoring of engineering structures
  • Geotechnical and hydrological engineering (i.e. slurry and retaining walls, piles, concrete columns, dams, embankments)
  • Line structures (roads and bridges, tunnels, railway lines, pipelines and others)

About technology

Composite-DFOS Fibre Optic Sensors

DFOS has changed the traditional way of understanding measurement – it has created the ability to observe the distribution of phenomena over the entire length of fibre, which can be thousands of meters long. COMPOSITE-DFOS sensors change the way DFOS technology is used in SHM systems.

The innovative construction of the sensors ensures the effectiveness of the strain transfer along the optical fibre, which is an integral part of the sensor. The unique shape ensures perfect cooperation between the sensor and the surrounding structure, and the specially developed composite guarantees the largest possible measuring range up to the strength limit of the glass measuring fibres.

With the DFOS (Distributed Fibre Optic Sensing) technology, the fibre optic sensor measures strains and temperature at any point along its entire length – up to 120 km. It replaces hundreds of thousands of individual spot sensors. DFOS is irreplaceable for the monitoring of phenomena occurring over long distances and in areas that even cover entire objects. The fact that there is no additional wiring, a large measuring range and miniature size of the sensors make DFOS suitable even for the most unusual solutions.

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EpsilonRebar - czujniki światłowodowe
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First of all

Total Range

Use of the full measurement range of optical fibres

Get the most out of your options: full utilization of the optical fibre measurement range guarantees measurements even under large local strains such as within the cracks and fractures.

The first fibre optic sensors in the world to utilize the full measurement potential of optical fibres.

The unique sensor material enables strain measurements up to +/- 4% (total measuring range 80,000 μɛ).

Use a reliable source of data measurement. By eliminating intermediate layers separating the fibre from the medium, you can be sure that the sensor readings accurately reflect the observed phenomena.

The world’s first fibre optic sensors with no distorting layers or coatings.

The measuring fibre and the sensor form a homogeneous structure.

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Secondly

Monolitic
Strucutre

The uniform cross-sectional structure of the sensor guarantees an unambiguous transfer of real strains to the optical fibre

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Secondly

Monolitic
Strucutre

The uniform cross-sectional structure of the sensor guarantees an unambiguous transfer of real strains to the optical fibre

Use a reliable source of data measurement. By eliminating intermediate layers separating the fibre from the medium, you can be sure that the sensor readings accurately reflect the observed phenomena.

The world’s first fibre optic sensors with no distorting layers or coatings.

The measuring fibre and the sensor form a homogeneous structure.

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Thirdly

Measurement
Identity

The integrity of a sensor with a monitored structure

As accurate as ever. Composite-DFOS sensors perfectly reflect the actual operation of the monitored object. The unique shape of the sensors makes them an integral part of the structure. It provides the highest quality of information about the state of the object and the ability to observe phenomena invisible to other fibre optic sensors.

The first fibre optic sensors in the world guaranteeing an unambiguous transfer of strains from the monitored medium (e.g. soil, concrete) to the optical fibre.

Excellent representation of the monitored phenomena thanks to:
A. adequate stiffness and ribbing of the EpsilonRebar sensor,
B. direct displacement measurement by 3DSensor.

Contact with Us

Do you have any questions? We will be happy to answer!

SHM System Sp. z o.o. Sp. kom.

Libertów, ul. Jana Pawła II 82a
30-444 Krakow, Polska

+(48) 12 356 52 13
+(48) 797 18 57 58
cdfos@shmsystem.pl

shmsystem.pl