Implementation of a Mobile Sensor Device Capable of Recognizing User Activities

Title
Implementation of a Mobile Sensor Device Capable of Recognizing User Activities
Authors
안진호박세준홍유진김익재김형곤
Keywords
휴대용 센서 디바이스; 사용자 움직임 추정; 가속 센서; 결정 트리
Issue Date
2009-10
Publisher
전자공학회논문지 SD (Journal of the Institute of Electronics Engineers of Korea SD)
Citation
VOL 46, NO 10, 40-45
Abstract
In this paper, we introduce a mobile-type tiny sensor device that can classify the activities of daily living based on the state-dependent motion analysis using a 3-axial accelerometer in real-time. The device consists of an accelerometer, GPS module, 32bit micro-controller for sensor data processing and activity classification, and a bluetooth module for wireless data communication. The size of device is 50*47*14(mm) and lasts about 10 hours in operation-mode and 160 hours in stand-by mode. Up to now, the device can recognize three user activities (“Upright”, “Running”, “Walking”) based on the decision tree. This tree is constructed by the pre-learning process to activities of subjects. The accuracy rate of recognizing activities is over 90% for various subjects.
URI
http://pubs.kist.re.kr/handle/201004/36902
ISSN
1229-6368
Appears in Collections:
KIST Publication > Article
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