we will start shortly…. fabry-perot fiso sensors presented by: régis blin, technical sales
TRANSCRIPT
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We will start shortly…
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Fabry-Perot FISO Sensors
Presented by: Régis Blin, Technical Sales
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Web Seminar
• You should hear my voice through your PC speaker / headset
• This webinar will last approx. 30 minutes.• 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
• Later this week you will receivelinks to:- Presentation in PowerPoint- Video recording of Webinar
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Contents
Fabry Perot sensors:Introduction to FISOPrincipleApplicationsSensorsReading unitsConclusion
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FISO Technologies
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FISO Technologies Inc.
Smartec sister company
Founded in 1994 1999 Acquired by Roctest Group
Independent subsidiary
Based in Quebec City 2000 m2 production area
ISO Certified ISO 9001:2008
ISO 13485:2003 (Medical)
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100 m2 Class 10 000 Clean Room
Clean Room
Plasma Enhanced Deposition System
Anodic Bonder
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Automated Production
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• Immune to EMI, RF, Lightning Strikes, High Voltage, Intense Magnetic Field,…
• Intrinsically Safe• Long term reliability (no corrosion)• Temperature independent (no T compensation)• Low power loss / up to 4 km long distance• Small size and light weight• Low cost
Key advantage of FISO system
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• Point sensors for pressure, strain, deformation, temperature, refractive index
• Long-terms stability• High resolution• Small size, packaging for geotechnical
instrumentation• Lowest cost for FOS
Fabry-Perot sensors
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Fabry Perot sensing principle
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• Measurement is achieved by measuring the Fabry-Perot cavity length using white light interferometry
Optical Fiber Mirrors
Fabry-Perot Cavityca. 1 cm
The phase between the two reflections depends on the strain and/or on the temperature on the sensor
Fabry Perot sensors
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Y1, Y2 correspond to maxima of cross correlation function
Y2Y
1
FP cavity (Y2)
FP cavity (Y1) Y
Signal conditioner
Connector
Incident signal
Reflected signal
2x2 Coupler
Source
FP coded light
Lens
Optical cross correlatorCCD detector
Cross correlation
function
Pixel
Fiber optic
Sensor
FP Cavity
US Patents:5,202,939 & 5,392,117
FISO Technology
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Fabry-Perot Sensor packaging
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Applications
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Monitoring: during construction and long-term
Parameters: Pressure: Piezometers (static and dynamic)TemperaturesStrong Motion recorder
Purpose: Insure safety of the dam, FOS selected for superior lightning protection, long lead cables, dynamic pressure sensing and long lifetime.
El-Mauro Tailings Dam - Chile
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Fiber Routing Fiber Routing to Terminal to Terminal
HouseHouse
Cut-Off TrenchCut-Off Trench
Final Terminal Final Terminal HouseHouse
@ 1800 m@ 1800 m
230 230 mm
2500 2500 mm
Stage 1 Terminal Stage 1 Terminal House @ 1000 mHouse @ 1000 m
El-Mauro Tailings Dam, Duct track
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Foundation DrillingsFoundation Drillings
Ducts for ConductorsDucts for Conductors
ManholesManholes Piezometers:Piezometers:SandSand
DrainsDrainsFoundationFoundation
Strain Protection isStrain Protection isCompulsory for Compulsory for
long term long term measurementsmeasurements
Objective:Objective:Stress Protected Stress Protected conductors and conductors and
instrumentsinstruments
El-Mauro Tailings Dam, Cable protection
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Manhole and Manhole and Armoured DuctsArmoured Ducts
El-Mauro Tailings Dam, Cable ducts
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Monitoring: understanding underground water movements
Parameters: Pore water pressure
Advantages: micro-PZ selected for small cross section, reduces borehole size, long lead cables and long lifetime.
Hydraulic tomography - USA
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Hydraulic tomography - USA
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Monitoring: continuous automatic monitoring from the construction to the operation
Parameters: Total Pressure Cell for stresses in soil
Purpose: fiber optical TPC selected for long lead cables and long lifetime.
Rotterdam Harbor - The Netherlands
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Fabry-Perot Total Pressure Cell (lightning)
FOP-C sensor
Oil-filled pressure cell
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Monitoring: continuous automatic monitoring
Parameters: Stresses in steel girders
Purpose: fiber optical strain gauges selected for long lead cables and long lifetime.
ESA VEGA Ground Segment SHM
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ESA VEGA Ground Segment SHM
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Monitoring: long-term
Parameters: Annular space monitoring
Vertical, Horizontal and Rotational Movements
Purpose: FOS selected for cryogenic environment, long lead cables and long lifetime.
LNG Tank, Huelva Storage - Spain
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LNG Tank Annular Space
Huelva storage (Spain)
• Absolute measurement
• Linear response
• Range: 20 mm (0.79’’)
• Long leads lengths
• Easy to use
• Heavy duty and robust
• Reliable and promising long term stability
• Independent of light source stability
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Monitoring: continuous automatic monitoring
Parameters: Displacement, strain, temperature
Purpose: fiber optical sensors selected for resistance to cryo, radiation, vacuum and strong magnetic fields.
Superconducting structures, ITER Magnets
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Superconducting structures, ITER Magnets
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FeedersCorrection Coils
Superconducting structures, ITER Magnets
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FISO Pressure Sensors
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Fabry-Perot Pressure sensors
Pyrex
Silicon Membrane
Fabry-Perot Cavityd0d0d0
P
d1
P1
d2
P2
d0
P0
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• Intrinsically safe• Immune to EMI/RFI/Lightning• Long-term reliability• Accuracy of ±0.25% F.S.• High resolution• Rugged stainless steel construction for harsh environments
SPECIFICATIONS PERFORMANCE Range 200, 350, 500, 750, 1000, 1500, 2000, 3000, 5000, 7000 kPa Accuracy ± 0.25% F.S. Resolution 0.025% F.S. Overload 1.5 × F.S. MODEL FOP FOP-F FOP-C FOP-P Housing Slim Thick-wall Threaded Push-in point
(STD 1/4" 18 NPT) with EW thread Outside diameter 19 mm 25.4 mm 19 mm 33.4 mm Length 100 mm 100 mm 100 mm 210 mm Material Stainless steel Filter Stainless steel, ~50 μ m, ~10 kPa low air entry
Ceramic, ~1 μ m, ~450 kPa high air entry
Fabry-Perot Piezometers
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The FOP-MicroPZ is a fiber optic piezometer used to measure pore-water (or other fluids) pressure. One of the main differentiator of the FOP-MicroPZ is its very small size, enabling it to be used where no other piezometers can. Moreover, the FOP-MicroPZ has similar or better performances than traditional piezometers.
Range 100, 200, 300 kPa Accuracy: ± 0.1 % F.S. Resolution: 0.025 % F.S.
FOP-MicroPZ
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FISO Displacement sensors
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Fabry-Perot Displacement Sensor
The FOD is an absolute position sensor. Its design is based on a Thin Film Fizeau Interferometer device (TFFI) mounted on a movable shaft.
Linear stroke: 20 mm Resolution: 0.002 mm Accuracy: ±0.02 mm -200°C to 100°C Aluminum, Stainless Steel.
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Fabry-Perot Displacement Sensor
Fizeau (variable FP)Mirror
Optical fibre
Light outLight in
Displacement
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Applications: Low frequency displacement measurements anywhere where an electric wire is forbidden, or where lightning strike too often.
Outside structures, Nuclear enclosure monitoring, Oil & Gas reservoir monitoring
Advantages:
Immune to EMI, to lightning strikes
Fabry-Perot Displacement Sensor
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FISO Strain Sensors
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Fabry-Perot Strain sensors
Fabry-Perot Cavity
dd0
Ɛ0
dt
Ɛt
dc
Ɛc
ƐCompression Tension
d0
dc
dt
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Range: ±1000µε Up to ±5000µε
Resolution: 0.01% FS
Trans. Sensitivity: <0.1% FS
Operating temp.: -40°C to 85°C
Range: ±1000µε Up to ±10000µε
Resolution: 0.01% FS
Trans. Sensitivity: <0.1% FS
Operating temp.: -40°C to 250°C
Range: ±1000µε up to ±3000µε
Resolution: 0.01% FS
Trans. Sensitivity: <0.1% FS
Operating temp.: -40°C to 85°C
Fabry-Perot Strain Sensors
EFO
SFO-W
FOS-N
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FISO Temperature Sensors
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Fabry-Perot Temperature Sensors
Fiber with large CTE
Fiber with low CTE
Fabry-Perot Cavity
300 um
d
T
do
T0
dh
Th
dc
Tc
d0 dc
dh
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Range: from -40°C to typ. +85°C (max. 300°C)
Response time: down to 750ms
Resolution typ. 0.1°C and min. 0.01°C
Accuracy ± 0.5°C
Fabry-Perot Temperature Sensors
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FISO Signal Conditionners
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FTI-10 DMI FPI-HR FPI-HS
Channel 1 16 or 32 1 or 2 1
Sequential Parallel
N/A Sequential Sequential Parallel Parallel
Max freq. 10 Hz 20 Hz
150ms-sw
250Hz (1ch)
125Hz (2ch)
15KHz
Analog output ±10V or
4-20mA
0 - 5V 0 - 5V
Power 12 VDC 12 VDC 24 VDC 24 VDC
WLFPI Signal Conditionners
FTI-10 Evolution platformDMI
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• One channel• Voltage output and RS-232 communication ports• Backlit LCD screen• Small footprint (1/8 DIN)• Rugged and easy to use• Battery powered
Single-channel portable readout
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• 16 to 32 channels• 50 000 samples data logger• Programmable data logger• NEMA-4 enclosure• Integrated modem for remote monitoring• LED indicators for FODL-1600/3200 status
16/32 channels readout
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Robust table-top design
OEM module @ 250 Hz / 125 Hz per channel
1-2 Channels (parallel)
Fully protected OEM design
Small footprint (102 x 102 x 45 mm)
Smart connectors SCAI
DIN-rail snap-on
Analog +USB
Temperature compensation
FPI-HR1-2 channels
(250 Hz=125 Hz/channel)
FPI-HR Modules
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The evolution reading unit is composed of an evolution platform, a usb / power transmission interface, and 2 FPI-HR modules of 2 channels each.
SCAI connector is a smart connector. On the sensor side a microchip containing the calibration factors is included.
The chip is read by the unit connector and data are automatically loaded into the software..
Evolution reading unit
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The data are fully compatible with SMARTEC SDB Software for static data management, analysis and representation
4.2 [m/m]
Software integration
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• Fabry-Perot sensors: point sensors for pressure, strain, deformation, temperature, refractive index
• Long-terms stability• High resolution• Small size, packaging for geotechnical
instrumentation• Lowest cost for FOS
Conclusions
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Thank you for your attentionSMARTEC
http://www.smartec.ch/