Thumbnail
Access Restriction
Subscribed

Author Robinson, A. ♦ Verma, S. ♦ Dutta, P.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2012
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science ♦ Technology ♦ Engineering & allied operations ♦ Other branches of engineering
Subject Keyword Headphones ♦ Multiplexing ♦ Participatory sensing ♦ Phone peripherals ♦ Ports (Computers) ♦ Mobile phones ♦ Electrocardiography ♦ Mobile handsets ♦ Servers ♦ Energy harvesting ♦ Audio communications ♦ Microphones
Abstract Smartphone peripherals like the Square card reader, Red-Eye mini, and HiJack platform suggest a growing interest in using the headset port for more than just headsets. How-ever, these peripherals only support sporadic activities in an efficient manner. Continuous sensing applications - like monitoring EKG signals - is possible but remains too inefficient for many realistic usage scenarios. We present Au-dioDAQ, a new sensor data acquisition platform. In contrast with prior work, AudioDAQ requires no hardware or software modifications on the phone, uses significantly less power, and allows continuous data capture over extended periods of time. The design is efficient because we draw all necessary power from the microphone bias voltage, and it is general because this voltage is present in every headset port. Data is modulated within the audible range, captured with the built-in voice recording app, and sent to a server for processing and storage. We show the viability of this approach by demonstrating an EKG monitor that can capture data continuously for hours.
Description Author affiliation: EECS Dept., Univ. of Michigan, Ann Arbor, MI, USA (Robinson, A.; Verma, S.; Dutta, P.)
ISBN 9781479964697
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2012-04-16
Publisher Place China
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 697.95 kB
Page Count 2
Starting Page 151
Ending Page 152


Source: IEEE Xplore Digital Library