Shazam that water leak! Sensors and faults
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Transcript of Shazam that water leak! Sensors and faults
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Shazam that water leak!Sensors and faults
Contact: [email protected]
Solomon Seyoum Ad GroenewegenLeonardo Alfonso Joanne Craven
Schalk Jan van Andel Sandra de VriesNick van de Giesen
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Some facts on household’s leaks (US)
• Average household leak loss: 35,000 L/year– More than 11 million households worth (over the whole USA)
• 10% of homes have leaks that waste more than 124,000 L/year (340L/day)
• Fixing easily corrected household water leaks can save homeowners about 10% on their water bills
Source: EPA website
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Objective
• To develop an automatic leak detection method for households, including:– a new, low cost, easy to install acoustic
sensor, capable to continuously record pipe vibrations and send data to a server
– an acoustic detection software based on audio fingerprinting, to analyse the data sent to the server
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Lab setup Prototype sensors
Acoustic sensor
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Audio fingerprinting softwareSensor
InternetHousehold
Suspicioussignal? NoYes
FingerprintDatabase
Server
PossibleleakageDatabase
Reportpossibleleackage
Fingerprintingsoftware
end
Example: Shazam App
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ALD software
• Feed mode– The ALD software creates fingerprints of
each sound recording and build database
• Detection mode– Once the database is complete, ALD is like
Shazam: listen to new recordings, check if they exist in database and retrieve message
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Water meter
To demand points
Sensor
Connection
SensorInternet
Household
Suspicioussignal? NoYes
FingerprintDatabase
Server
PossibleleakageDatabase
Reportpossibleleackage
Fingerprintingsoftware
end
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Dr. Solomon Seyoumtesting sensor at a household meter
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Silence
Shower
Shower+ Kitchen
Kitchen only
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ExperimentsHouse 1 House 2
Number of 30 sec files
3800+ files (every 5, 10 or 30 mins)
1700+ files (every 5 or 10 mins)
Appliances ToiletKitchen tap
Bath tapShower
Washing machineDishwasher
+Toilet 2
Garden tapN/A
Issues • Sensor regularly offline• Loose cables, not detecting
• Solved: sensor always online
• But: SD card fills fast
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23 24 25 26 27 28 29 30 31 01 02 03 04
05 06
Num
bero
fana
lysedau
diorecordings
Day(above)andMonth(below)
DETECTION-Found FEED-Found FEED-NotFoundandInserted
Feed vs detection House 1
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Feed vs detection House 2
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12Recorded water use
Bathtub Dishwasher ShowerShower ShowerTapKitchen ShowerToiletTapDishwasher TapKitchen TapToiletTapToiletTapKitchen Toilet WashingMachine
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Detection mode - 15 seconds analysis
Bathtub Dishwasher ShowerShowerTapKitchen ShowerToilet TapDishwasherTapKitchen TapToilet TapToiletTapKitchenToilet WashingMachine
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Conclusions
• Automatic leak detection method for households has been developed
• Results show sensor can “learn” how a pipe normally sounds and detect anomalies (potential leaks)– Further testing required for sensor location
and false alarms• Not conclusive if sensor can distinguish
water uses
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Thank you for your attention
Any questions?
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Opportunities
• Market opportunities– Categorisation of domestic water use– Survelliance of water systems
• Aquaseca: 1-year old company doing the same
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@WATERNOMICS_EU www.waternomics.eu18
waternomics.eu @waternomics_eu
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@WATERNOMICS_EU www.waternomics.eu19
This project has received funding from the European Union’s Seventh Framework Programme for research, technological development and demonstration under grant agreement no 619660.
waternomics.eu @waternomics_eu
This project is member of and