The document describes a low-cost sensor system for collecting water usage data. It consists of ultrasonic flow meters and small water meters that measure water usage. A BeagleBone Black device collects data from the sensors via serial ports. A website allows users to monitor water usage data in real time and download collected data. Pilot tests of the system were conducted to collectively gather water usage data.

1. Low cost sensor and system
for collecting water usage data
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2. Agenda
1. Introduction
2. Sensor System
3. Pilot
4. Conclusion
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3. Introduction
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4. Waternomics
• Increase end-user
conservation awareness
and affect behavioural
changes
• Avoid waste through leak
detection
• Save energy and CO2
through saving water
• Smart water sensors
• Software
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5. Sensor System
• Water Sensor
• Data Acquisition Device
• Website
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6. Water Sensors
Ultrasonic Flow Meter Mini Water meter
 Easy installation
 For main pipe in the building
 Positive/negative/net flow analyzer
 Serial RS485 output
 Built-in calibration
 ±1% accuracy
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 Small size
 For areas around the house
 fit with regular residential hose (1/2”)
 1 to 30L/min
 ±2% accuracy

7. Data Acquisition Device
BeagleBone Black (BBB)
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• High speed (1GHz)
• Multiple GPIO and Serial ports
• Runs on Linux
• $45

8. Website
• Real time monitoring
• Downloading data
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9. Pilots
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Collective data

10. Conclusion
• Presented the pilots and its preliminary
requirements
• The sensors and the data acquisition
system that we propose
• Have developed and tested a low cost
water flow sensor based system for
collecting water information for three types
of pilots.
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