Corporate We will start shortly… Overview SOFO VII MuST Universal Reading Unit for SOFO and MuST (FBG) Sensors Daniele Inaudi inaudi@smartec.ch SMARTEC SA, Manno, Switzerland www.smartec.ch Roctest, St. Lambert, Canada www.roctest.com Web Seminar o You should hear my voice through your PC speaker / headset o You can ask questions using the “Questions” panel on the right of your screen. We will answer: • In the “Questions” Panel • At the end of the presentation • By email o Later this week you will receive link to: • Presentation in PowerPoint, PDF and with narration • Datasheets Contents o Introduction o SOFO Technology o FBG Technology o SOFO VII reading unit introduction o Configurations o Specifications o Conclusion Introduction o Fiber Optic Sensors (FOS) for Structural Health Monitoring (SHM) have moved from R&D to mainstream applications o Some technologies have emerged as dominant: • SOFO: Long-gauge deformation sensors • FBG’s: Point Strain and Temperature sensors • Brillouin and Raman scattering: distributed Sensing o Standards and interoperability are emerging, allowing combination of FOS and traditional sensors in the same projects SOFO Sensors o Advantages: • Long-gauge: not sensitive to local changes. Enables monitoring at the scale of structural elements • Built-in temperature compensation • Very accurate: sub-microstrain • Long-term stable • Track record of more than 10’000 sensors installed over 15+ years SOFO System o Long-gauge fiber optic deformation sensors o Gauge length of 0.2m to 10m o High resolution: 2µm o Excellent long-term stability o Insensitive to temperature, EM fields, corrosion,... o Embeddable or surface installable in new and existing structures o Easy and rapid to install and measure o Ideal for monitoring of large structures, especially concrete, and geotechnical applicaitons MuST Sensors o Advantages: • Variety of sensing parameters and conditions • Strain on metals, composites, concrete… • Temperature • Tilt • Accelleration • Mulitplexing • Accuracy and stability Fiber Bragg Grating Sensors MuST System o Multiplexed Strain and Temperature monitoring system based on Fiber Bragg Gratings o Up to 10 strain sensors and 25 temperature sensors on the same line o Gauge length from 1 cm to 2 m o Temperature measurement for strain and deformation sensors o Static and dynamic measurements possible SOFO and MuST (FBG) o SOFO and FBG: two leading fiber optic sensing technologies for SHM o SOFO offer superior performance and flexibility in monitoring deformations of large structures. In particular well adapted to measure deformations of concrete, rock and soil. o SOFO has lower sensor costs o MuST (FBG) offer sensors for different parameters o MuST (FBG) sensors can be multiplexed in-line o In real-world applications it would be ideal to use sensors based on both technologies in the same project Interoperability ? o Is it possible to use SOFO sensors with MuST reading unit and vice-versa? Compatible Compatible Introducing SOFO VII MuST o Is it possible to use SOFO sensors with MuST reading unit and vice-versa? Now you can! SOFO VII technology o Sophisticated algorithms allow measurement of SOFO sensors through spectral analysis. -10 1520 2500 1520.5 1521 1521.5 1522 1522.5 1523 1523.5 1524 1524.5 1525 -11 2000 -12 -13 1500 -14 FFT 1000 -15 -16 500 -17 -18 0 -60000 -40000 -20000 0 20000 40000 60000 SOFO VII MuST Features o Two formats: • Portable (4 channels) • Permanent installation (4 or 8 channels) o Each channel can measure either: • • • • 1 SOFO sensor Up to 5 SOFO sensors, using external 1x5 splitter 1 chain of FBG sensors (e.g. 7 deformation, 12 strain, 25 T) Up to 4 chains of FBG sensors, using external 1x4 coupler o Each Channel can be SW configured for SOFO or MuST o Integrates field PC with SMARTEC software engine and user interface SOFO VII MuST Units Permanent monitoring (4 or 8 channels) Portable (4 channels) Configuration Example 1 o 4 SOFO Sensors Configuration Example 2 o 2 SOFO sensors + 2 FBG chains Configuration Example 3 o 5 SOFO sensors per channel using Splitter Configuration Example 4 SOFO o All together now 1x5 splitter MuST / FBG Temperature 1x4 coupler Splitter ≠Coupler Splitter -> SOFO Coupler -> MuST Tilt Accelleration Strain Interfacing with SOFO VII o Integrated PC allows on-board SMARTEC’s SDB software and advanced connectivity o SDB, SDB View and SDB Pro now included in the SOFO VII price (starting October 1st 2013) o Ethernet interface, for remote access and user interface o USB interface, e.g. for 4G modem or data download o Touch screen on portable unit SDB View software Sensor list. Tab view with colors coding for pre-warning and warning. Map view with colors coding for pre-warning and warning. Plot view with pre -warning and warning thresholds. SDB Pro Software Create sensors based on complex mathematical functions SOFO VII / MuST Universal Reading Unit Performance SOFO Sensors Measurement MuST (FBG) Sensor Measurement Measurement resolution 2 μm RMS 1 pm RMS Linearity / Accuracy <2‰ ±2 pm Sample rate 1 Sample/s (1Hz) 1 Sample/s (1Hz) Measurement range Max. 50 mm 100 nm (1500 to 1600 nm) Sensors per channel Max 5 SOFO Deformation sensors Max 7 MuST (FBG) Deformation sensors Up to 12 Strain FBG sensors Up to 25 Temperature FBG sensors Calibration None, not required NIST traceable wavelength reference Optical Connectors E-2000 PC (0°) E-2000 AC (8°) Dynamic range >50 dB >50 dB Measurement time < 2 s (incl. SDB writing) per channel < 2 s (incl. SDB writing) per channel Available channel count 4 or 8* channels total, software configurable between SOFO and MuST SOFO VII / MuST Universal Reading Unit SPECIFICATIONS – PERMANENT INSTALLATION AC power supply 230 V 50 Hz / 110 V 60 Hz Auto detect External connections Ethernet connection, 4 or 8 optical ports, power supply, display and screen Data logger capacity Typical 5 years of data with measurements every 1h. Dimensions ~ 500 mm x 500 mm x 210 mm Weight ~ 25 kg Operating temperature 10°C to + 40°C - 40°C to + 40°C with heating option* Humidity 90% non-condensed SOFO VII / MuST Portable Reading Unit SPECIFICATIONS - PORTABLE AC power supply 230 V 50 Hz / 110 V 60 Hz Auto detect DC power supply 18-20 VDC or internal battery Nominal consumption 45 Watt (Peak 90W) Communication RJ45 Ethernet; USB Control interface 12” touchscreen GUI; Ethernet TCP / IP; USB External connections Ethernet connection, 4 optical ports, power supply, display and external screen Data logging format SDB Database Dimensions ~ 360 mm x 275 mm x 100 mm Weight ~ 7,3 kg – Aluminum enclosure Operating temperature +10°C to 40°C Relative humidity <90%, non-condensed Operating temperature +10°C to + 40°C Relative humidity < 90% non-condensed Conclusions o New SOFO VII MuST reading unit can measure SOFO and MuST (FBG) sensors. o Mix-and-match to SOFO and MuST sensors as required by each project. o SOFO sensors can now be multiplexed with splitter. o Portable and permanent units o Integrates SDB software for data acquisition, management and user interface (local or remote) o Unique solution on the market, available immediately o Competitive pricing, lower than previous generation SOFO Reading units.