Presentation by Prof. Sébastien Bette and Prof. Christophe Caucheteur of Université of Mon & B-SENS.

1. A roadmap towards smart
wearable optical fiber sensors
Prof. Sébastien BETTE
Prof. Christophe CAUCHETEUR
University of Mons & B-SENS
christophe.caucheteur@umons.ac.be
Sebastien.bette@umons.ac.be

2. Bringing hospital-level care to the patient’s home
Patient-centred care:
- Cost-effective
- Enhanced comfort
- Real-time operation
- Continous monitoring
- ...

3. Use of telecommunication-grade optical fibers
Telecommunication standard in silica
or in polymer
Two concentric cylindrical layers:
the core and the cladding
Guidance of light by total internal
reflections
Numerous assets:
- Long-haul operation (> km)
- Very small size (125 µm)
- EM immunity
- Multiplexing capability
- ...

4. The fiber Bragg grating (FBG) technology
FBG: Bandpass filter photo-inscribed
in the fiber core
Use of UV laser (clean room in Mons)
Temperature/strain sensor + many
more modalities with coatings

5. Cost-effective and portable interrogation
Use of LEDs and photodiodes
Possible interface with mobiles/tablets

6. Easy integration, in textiles or even in situ
Target applications:
- Sensing of pH, oxygen partial
pressure, glucose, … in blood
- Respiratory monitoring (textiles)

7. IoT team at UMONS is working on technologies able to provide
a global solution compatible with IoT standards
Sensors
+
signal
processing
Wireless
data
transmission
Network
integration
Edge/Cloud
computing
& storage
Data
processing
IoT challenges & IoT projects at UMONS
- Development of dedicated and efficient sensors (i.e.: optical sensors, electronic
devices/circuits based on energy harvesting from ambient RF signals)
- Dimensioning of appropriated wireless transmission systems/networks
- Implementing global integrated solutions including edge/cloud computing & storage

8. In the project « BioCloud 4.0 » (IT for human health),
we are dimensioning “Wireless Sensor Network” Solutions
Sensors
+
signal
processing
Wireless
data
transmission
Network
integration
Edge/Cloud
computing
& storage
Data
processing
Ongoing project : BioCloud 4.0 - IT for human health
Funding : BioWin health cluster (Plan Marshall)

9. In the project « BioCloud 4.0 » (IT for human health),
we are dimensioning “Wireless Sensor Network” Solutions
Sensors
+
signal
processing
Wireless
data
transmission
Network
integration
Edge/Cloud
computing
& storage
Data
processing
WSN challenges:
1. Limited transmission range
 hob-by-hop communications
2. Nodes are sleeping (e.g. 99% of time)
 Duty Cycle communications
3. Find the “best” path (e.g., in order to
optimize the network lifetime)
 Routing protocols for WSN
4. WSN integration to the Internet
 New IETF standards for IoT :
6LoWPAN, RPL, CoAP, …
Our tools for R&D: experimental
testbeds, ContikiOS, ns-3, …

10. In the project « BioCloud 4.0 » (IT for human health),
we are dimensioning “Wireless Sensor Network” Solutions
Sensors
+
signal
processing
Wireless
data
transmission
Network
integration
Edge/Cloud
computing
& storage
Data
processing
 In this project, we evaluate the performances
of WSN including a radiating cable (placed on
the roof of the cleanroom)
Ongoing project : « BioCloud 4.0 - IT for human health »
Funding : BioWin health cluster (Plan Marshall)
WSN challenges:
1. Limited transmission range
 hob-by-hop communications
2. Nodes are sleeping (e.g. 99% of time)
 Duty Cycle communications
3. Find the “best” path (e.g., in order to
optimize the network lifetime)
 Routing protocols for WSN
4. WSN integration to the Internet
 New IETF standards for IoT :
6LoWPAN, RPL, CoAP, …
Our tools for R&D: experimental
testbeds, ContikiOS, ns-3, …

11. Visible
Light COM
Visible
Light COM
RELAY
GATEWAY
Visible
Light COM
Visible
Light COM
RELAY
LEDLED
LEDLED
LEDLED
Distant
server
/Cloud
Densify network connectivity, using street furniture
• Use of Visible Light Communication (VLC)
• e.g. LED lighting
• Wi-Fi hotspot / machine-to-machine (M2M)
Funding : FEDER WAL-e-CITIES
Partners: Multitel - Sirris
UMONS-IoT team is using & dimensioning different transmission
systems for IoT applications - Case of VLC/Li-Fi (FEDER Project)

12. Power Lines Communications
for Smart Metering - Smart Grid
Radio-over-fibre(RoF)-based transmissions
Simulation (ns-3) & experiment
of RoF-802.11n/ac WiFi
VLC – LiFi communications
(Streetlamps-based)
Project : FEDER WAL-e-CITIES
Partners: Multitel – Sirris
LPWAN-based
communications
for extended areas
LoRa-based
communications
Sensors
+
signal
processing
Wireless
data
transmission
Network
integration
Edge/Cloud
computing
& storage
Data
processing
IoT is not limited to WSN, cellular,… : we can dimension
different wireless systems appropriated to the application needs

13. Towards optical fiber sensors integrated to the IoT
Partnership for
the development
of global solutions
in e-health domain
Integration of
technologies
compatible with
IoT standards
Dimensioning
appropriated wireless
communication systems
to gather rich and
valuable
information
IoT