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2010
Springer

WATTR: a method for self-powered wireless sensing of water activity in the home

10 years 28 days ago
WATTR: a method for self-powered wireless sensing of water activity in the home
We present WATTR, a novel self-powered water activity sensor that utilizes residential water pressure impulses as both a powering and sensing source. Consisting of a power harvesting circuit, piezoelectric sensor, ultra-low-power 16bit microcontroller, 16-bit analog-to-digital converter (ADC), and a 433 MHz wireless transmitter, WATTR is capable of sampling home water pressure at 33 Hz and transmitting over 3 m when any water fixture in the home is opened or closed. WATTR provides an alternative sensing solution to the power intensive Bluetooth-based sensor used in the HydroSense project by Froehlich et al. [2] for singlepoint whole-home water usage. We demonstrate WATTR as a viable self-powered sensor capable of monitoring and transmitting water usage data without the use of a battery. Unlike other water-based power harvesters, WATTR does not waste water to power itself. We discuss the design, implementation, and experimental verification of the WATTR device. Author Keywords Power Ha...
Tim Campbell, Eric Larson, Gabe Cohn, Ramses Alcai
Added 09 Nov 2010
Updated 09 Nov 2010
Type Conference
Year 2010
Where HUC
Authors Tim Campbell, Eric Larson, Gabe Cohn, Ramses Alcaide, Shwetak N. Patel
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