Innovative Sensing Systems
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Innovative Sensing Innovative Sensing Systems Systems A survey of the activities on advanced sensing systems for permanent monitoring carried out at Politecnico di Torino – Department of Electronics M. Parvis, G. Perrone, A. Vallan M. Parvis, G. Perrone, A. Vallan Contact person: G. Perrone, Dep. of Electronics, Contact person: G. Perrone, Dep. of Electronics, [email protected] [email protected]
description
Innovative Sensing Systems. A survey of the activities on advanced sensing systems for permanent monitoring carried out at Politecnico di Torino – Department of Electronics. M. Parvis , G. Perrone , A. Vallan. Contact person: G. Perrone, Dep. of Electronics, [email protected]. - PowerPoint PPT Presentation
Transcript of Innovative Sensing Systems
Innovative Sensing Innovative Sensing SystemsSystems
A survey of the activities on advanced sensing systems for permanent monitoring carried out at Politecnico di
Torino – Department of Electronics
M. Parvis, G. Perrone, A. Vallan M. Parvis, G. Perrone, A. Vallan
Contact person: G. Perrone, Dep. of Electronics, Contact person: G. Perrone, Dep. of Electronics, [email protected]@polito.it
M. Parvis, G. Perrone, A. VallanDept. of Electronics - Politecnico di Torino - Italy
Tel. +39 011 5644146 – [email protected] - www.fco.delen.polito.it
Technologies
• FOS market is limited by high prices, complexity, insufficient familiarity with fibers: Plastic optical fibers → very low-cost
Glass fibers → innovative interrogators
Fiber Optic Sensors
• Distributed measurement systems: Integration of FOS in wireless networks
Wireless low-power sensor networks
Data Acquisition Architectures
M. Parvis, G. Perrone, A. VallanDept. of Electronics - Politecnico di Torino - Italy
Tel. +39 011 5644146 – [email protected] - www.fco.delen.polito.it
Fiber vs. Traditional Sensors
• FiberFiber vs. mechanicalmechanical sensors:– Lightweight, flexibility and versatility.
– Resistance to corrosion.
– Reduced invasive impact given the possibility to remote the control unit.
• FiberFiber vs. electricalelectrical sensors: – Immunity to electromagnetic disturbances and
discharges.
– Impossibility to start fires or explosions.
– Simplified remote operation since the same fiber can be used both for sensing and data transmission.
M. Parvis, G. Perrone, A. VallanDept. of Electronics - Politecnico di Torino - Italy
Tel. +39 011 5644146 – [email protected] - www.fco.delen.polito.it
Facilities
M. Parvis, G. Perrone, A. VallanDept. of Electronics - Politecnico di Torino - Italy
Tel. +39 011 5644146 – [email protected] - www.fco.delen.polito.it
Applications
Civil and geotechnical engineering:Civil and geotechnical engineering:
Structural monitoring, landslide evolution, …
Mechanics:Mechanics:
Automation, monitoring of movable parts, valves, …Chemistry: Chemistry:
PH measurement, detection of gases or of toxic products, …
Medicine and Medicine and bioengineering:bioengineering:
Physiological parameters, muscular force, …
M. Parvis, G. Perrone, A. VallanDept. of Electronics - Politecnico di Torino - Italy
Tel. +39 011 5644146 – [email protected] - www.fco.delen.polito.it
Capabilities
10 International 10 International patentspatents
Plastic and glass fiber sensors for:
•Displacements
•Non contact distance
•Vibrations / accelerations
•Strain - pressures
•Chemicals (H, SOx, NOx)
•Temperature
•Electrical Field
• Custom data acquisition systems
• Wireless network of low-cost miniaturized sensors for real-time and off-line monitoring
M. Parvis, G. Perrone, A. VallanDept. of Electronics - Politecnico di Torino - Italy
Tel. +39 011 5644146 – [email protected] - www.fco.delen.polito.it
ExamplesDisplacement / crack monitoring
Smart buttons and network of wearable
sensors
Vibrations
Deformations
Chemicals
M. Parvis, G. Perrone, A. VallanDept. of Electronics - Politecnico di Torino - Italy
Tel. +39 011 5644146 – [email protected] - www.fco.delen.polito.it
Examples: Displacement Sensors
Displacement sensors
Vibration sensor
• Up to 60 mm
• Resolution: < 1/100 mm
• Repeatability: < 1/20 mm
M. Parvis, G. Perrone, A. VallanDept. of Electronics - Politecnico di Torino - Italy
Tel. +39 011 5644146 – [email protected] - www.fco.delen.polito.it
Examples: Displacement SensorsField test in Venice with the support
from Fondazione TorinoWireless
LOCK
M. Parvis, G. Perrone, A. VallanDept. of Electronics - Politecnico di Torino - Italy
Tel. +39 011 5644146 – [email protected] - www.fco.delen.polito.it
Examples: Deformations
Low cost sensor able to measure distributed displacements with a sub-millimeter resolution based on the phase shift between transmitted and received signals along a fiber link.
M. Parvis, G. Perrone, A. VallanDept. of Electronics - Politecnico di Torino - Italy
Tel. +39 011 5644146 – [email protected] - www.fco.delen.polito.it
Examples: Deformations
Variation of light polarization
Distributed sensor used to measure deformations in a lab
model of a bridge.
Distributed sensor used to measure deformations in a lab
model of a bridge.
Samples
Outp
ut
pow
er,
dB
Response to five pressure stimuli
Prototype of the control unit
M. Parvis, G. Perrone, A. VallanDept. of Electronics - Politecnico di Torino - Italy
Tel. +39 011 5644146 – [email protected] - www.fco.delen.polito.it
Examples: Deformations
Fiber Bragg Gratings with custom interrogators
Acoustic wave detection
Structural monitoring
M. Parvis, G. Perrone, A. VallanDept. of Electronics - Politecnico di Torino - Italy
Tel. +39 011 5644146 – [email protected] - www.fco.delen.polito.it
Examples: Vibrations
Low cost sensor based on the spectral analysis of the received reflected power to measure the amplitude of vibrations independently from the surface reflectivity.
• Resolution: < 1/1000 mm
• High frequency capabilities (current tests up to 40 kHz)
M. Parvis, G. Perrone, A. VallanDept. of Electronics - Politecnico di Torino - Italy
Tel. +39 011 5644146 – [email protected] - www.fco.delen.polito.it
Example: Network of Wearable Sensors
Wireless network of low-cost wearable buttons for real-time and off-line monitoring of temperature and humidity
10 cent shaped button with 10 cent shaped button with temperature and humidity sensor, temperature and humidity sensor, lithium battery and 2.4 GHz radiolithium battery and 2.4 GHz radio
Skin Temperature and Relative Humidity
Date and Time
Tem
pera
ture
[°C
]
Rel
ativ
e H
umid
ity [%
]
33
34
35
36
80
90
100
03 May 200814:00
03 May 200823:00
04 May 200808:00
TemperatureHumidity
Example of biomedical application: skin Example of biomedical application: skin temperature and humidity monitoring during temperature and humidity monitoring during daily lifedaily life
