Title :
A wearable UHF RFID-based EEG system
Author :
Dementyev, A. ; Smith, J.R.
Author_Institution :
Dept. of Electr. Eng., Univ. of Washington, Seattle, WA, USA
fDate :
April 30 2013-May 2 2013
Abstract :
The wearable electroencephalogram (EEG) monitoring systems are the cornerstone of noninvasive brain-computer interfaces (BCI) and many medical applications, but state-of-the-art wearable systems are limited by weight, battery life and size. In this paper we present EEGWISP: am EEG monitoring system that is battery-free; is powered by a standard UHF RFID reader; and uses backscatter to transmit the data using a EPC Class 1 Gen2 protocol. Since EEGWISP does not need batteries it can be lightweight, miniature and maintenance free for users. We designed a low-power EEG acquisition circuit with 62.6 μA current consumption. For validation, EEG signals were shown by distinct appearance of 8-12 Hz oscillations (alpha waves) when wearer´s eyes are closed. EEGWISP can record EEG signals at 63 Hz sampling rate, at the distances up to 0.80 m and with 0.1 % data loss. With slight modifications, our system can be used for other biopotential signals such as ECG.
Keywords :
biomedical electronics; brain-computer interfaces; electroencephalography; patient monitoring; radiofrequency identification; wearable computers; EEGWISP; EPC Class 1 Gen2 protocol; UHF RFID; backscatter; biopotential signals; electroencephalogram; frequency 63 Hz; frequency 8 Hz to 12 Hz; low-power EEG acquisition circuit; monitoring systems; noninvasive brain-computer interfaces; sampling rate; standard UHF RFID reader; wearable UHF RFID-based EEG system; Capacitors; Electrodes; Electroencephalography; Gain; Radiation detectors; Radio frequency; Radiofrequency identification;
Conference_Titel :
RFID (RFID), 2013 IEEE International Conference on
Conference_Location :
Penang
Print_ISBN :
978-1-4673-5748-7
Electronic_ISBN :
978-1-4673-5749-4
DOI :
10.1109/RFID.2013.6548128
