| 한글제목(Korean Title) |
Indoor Passive Location Tracking and Activity Monitoring using WSN for Ubiquitous Healthcare |
| 영문제목(English Title) |
Indoor Passive Location Tracking and Activity Monitoring using WSN for Ubiquitous Healthcare |
| 저자(Author) |
Vinay Kumar Singh
Seung-Chul Lee
Hyotaek Lim
Risto Myllyla
Wan-Young Chung
|
| 원문수록처(Citation) |
VOL 05 NO. 04 PP. 0382 ~ 0388 (2007. 12) |
한글내용
(Korean Abstract) |
|
영문내용
(English Abstract) |
Indoor location system using wireless sensor network technology was applied for the status evaluation and activity monitoring of elderly person or chronic invalid at home. Location awareness application transparent to the daily activities, while providing the embedded computing infrastructure with an awareness of what is happening in this space. To locate an object, the active ceiling-mounted reference beacons were placed throughout the building. Reference beacons periodically publish location information on RF and ultrasonic sig-nals to allow application running on mobile or static nodes to study and determine their physical location. Once object-carried passive listener receives the infor-mation, it subsequently determines it’s location from reference beacons. By using only the sensor nodes without any external network infrastructure the cost of the system was reduced while the accuracy in our experiments was fairly good and fine grained between 7 and 15 cm for location awareness in indoor environments. Passive architecture used here provides the security of the user privacy while at the server the privacy was secured by providing the authentication using Geopriv approach. This information from sensor nodes is further forwarded to base station where further computation is performed to determine the current position of object and several applications are enabled for context awareness. |
| 키워드(Keyword) |
Context-awareness
Indoor location
Wireless sensor network
ultrasonic
base-station
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| 파일첨부 |
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