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Clean Water Monitoring
(CWM)
Development of a multi-parameters
probe for real-time monitoring of
water quality in networks
06.06.2017 P. Perdaems (SIG - Geneva Water)
N. Giandomenico (Hepia)
D. Helal (Orbiwise)
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Distributor needs
Real-time Monitoring of water quality parameters
► Turbidity ► Residual Chlorine
► Conductivity ► Temperature
► Flow Velocity ► Pressure
Anticipation of pipes renewals
Hydraulic modelizationof water networks
(calculations)
Optimization of the operation of water facilities
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General Principle of CWM
Distributor :Monitoring
center
Interface
Visual Tools
- Sensors- Embedded software- Wireless communication- Protocol & Alerts- Mechanical integration
Communication
Network
Probe
Drinking water network(on buried pipe)
Gateways
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A new industrial tool …
innovative, universal, open &
evolutive
6 physicochemicalparametersin 1 probe
Real-time measurementCompact
Directly installed in a pipe
Energy autonomy
Wireless communication & low consumption
Installation at any point of the water network
Interesting cost
► LoRaWAN® Protocol
► Diameter : 40 mm► Length : 300 mm
►Without interrupting the water distribution
►minimum 6 months► 1 standard AA battery► no electrical wire
► Production cost ≤ 1’500 $
► User settings (sampling rate)
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The Probe
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The Probe
Portes ouvertes de l’Hepia – mars 2017
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The Sensors
PARAMETERS MEASURING RANGESRESOLUTION ACCURACY
SWISS STANDARD
TurbidityRange 1 : 0.1 to 1 NTU
Range 2 : 1 to 10 NTU
0.1 ± 0.1 NTU
0.5 ± 0.5 NTU1 NTU
Residual ChlorineRange 1 : 0.01 à 0.2 mg Cl2/L
Range 2 : 0.1 à 0.5 mg Cl2/L
0.01 ± 0.01 mg Cl2/L
0.1 ± 0.1 mg Cl2/L0.1 mg Cl2/L
Temperature 0 à 30 °C 0.1 ± 0.1 °C 8 … 15°C
Flow Velocity 0 à 2 m/s 0.1 ± 0.1 m/s -
Pressure 0.1 à 16 bar 0.1 ± 0.1 bar -
Conductivity 5 à 1'000 μS/cm 5 ± 5 μS/cm 200 … 800 µS/cm
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The Sensors
Residual Chlorine Conductivity / T°C Turbidity
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LoRAWAN™ IoT Network
LoRa™ Gateway
Cloud Application
Servers
LoRaWAN™Core Network Server
User Interfaces:Network Operations & Maintenance
Users & Devices Management
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LoRAWAN™ IoT Network
▪ End-device battery can last 10 years on one AA battery
OutdoorGateway (GW)
Device
~4.5km
Typical Wireless Sensor Network
Very low cost wireless infrastructure in unlicensed bands
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LoRAWAN™ IoT Network
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Standard User Interface
Anywhere
At any time
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Thank you
Acknowledgements