Shazam that water leak! Sensors and faults

  • View
    183

  • Download
    7

Embed Size (px)

Transcript

  • Shazam that water leak!Sensors and faults

    Contact: l.alfonso@unesco-ihe.org

    Solomon Seyoum Ad GroenewegenLeonardo Alfonso Joanne Craven

    Schalk Jan van Andel Sandra de VriesNick van de Giesen

  • Some facts on households 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

  • 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

  • Lab setup Prototype sensors

    Acoustic sensor

  • Audio fingerprinting softwareSensor

    InternetHousehold

    Suspicioussignal? NoYes

    FingerprintDatabase

    Server

    PossibleleakageDatabase

    Reportpossibleleackage

    Fingerprintingsoftware

    end

    Example: Shazam App

  • 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

  • Water meter

    To demand points

    Sensor

    Connection

    SensorInternet

    Household

    Suspicioussignal? NoYes

    FingerprintDatabase

    Server

    PossibleleakageDatabase

    Reportpossibleleackage

    Fingerprintingsoftware

    end

  • Dr. Solomon Seyoumtesting sensor at a household meter

  • Silence

    Shower

    Shower+ Kitchen

    Kitchen only

  • 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

  • 0

    10

    20

    30

    40

    50

    60

    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

  • Feed vs detection House 2

  • 0

    2

    4

    6

    8

    10

    12Recorded water use

    Bathtub Dishwasher ShowerShower ShowerTapKitchen ShowerToiletTapDishwasher TapKitchen TapToiletTapToiletTapKitchen Toilet WashingMachine

  • 0

    2

    4

    6

    8

    10

    12

    Detection mode - 15 seconds analysis

    Bathtub Dishwasher ShowerShowerTapKitchen ShowerToilet TapDishwasherTapKitchen TapToilet TapToiletTapKitchenToilet WashingMachine

  • 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

  • Thank you for your attention

    Any questions?

  • Opportunities

    Market opportunities Categorisation of domestic water use Survelliance of water systems

    Aquaseca: 1-year old company doing the same

  • @WATERNOMICS_EU www.waternomics.eu18

    waternomics.eu @waternomics_eu

  • @WATERNOMICS_EU www.waternomics.eu19

    This project has received funding from the European Unions Seventh Framework Programme for research, technological development and demonstration under grant agreement no 619660.

    waternomics.eu @waternomics_eu

    This project is member of and