Biomedical Engineering: Applications, Basis and CommunicationsVol. 19, No. 02, pp. 105-115 (2007) No AccessDESIGN AND EVALUATION OF ACTIVE RFID POSITIONING SYSTEM FOR HOME HEALTHCARE SERVICEHsi-Wen Wang, Shao-Shan Chiang, Jeng-Hua Wu, and Ren-Guey LeeHsi-Wen WangDepartment of Electronic Engineering, National Taipei University of Technology, Taipei, Taiwan Search for more papers by this author , Shao-Shan ChiangDepartment of Electrical Engineering, Lunghwa University of Science and Technology, Taoyuan, Taiwan Search for more papers by this author , Jeng-Hua WuDepartment of Electronic Engineering, National Taipei University of Technology, Taipei, Taiwan Search for more papers by this author , and Ren-Guey LeeDepartment of Electronic Engineering, National Taipei University of Technology, Taipei, TaiwanCorresponding author: Dr. Ren-Guey Lee, Department of Electronic Engineering, National Taipei University of Technology, Taipei, 10643 Taiwan. Tel.: 886-2-2771-2171, ext. 2254. Search for more papers by this author https://doi.org/10.4015/S1016237207000148Cited by:0 PreviousNext AboutSectionsPDF/EPUB ToolsAdd to favoritesDownload CitationsTrack CitationsRecommend to Library ShareShare onFacebookTwitterLinked InRedditEmail AbstractThis paper is mainly to implement an active RFID system for 2-dimensional positioning service for home healthcare applications. It elaborates on the research processes including designing, planning and building of the system. The proposed system uses four active tags for the reference addresses and an object equipped with an active tag. It transmits the received signal strength indicator (RSSI) and the unique electronic product code (EPC) back to the tag reader through wireless transmission. Then the system employs the information, which is received from the tag reader via the monitor center, to compute the geometric relation between the reference tags and the object to determine the location of the object by the positioning algorithm. Because the radio signal is vulnerable to the interferences from the terrain and obstacles while propagating, the tag reader is likely to receive signals with bad quality thats result in errors. Therefore, this paper studies and sorts out several issues that could affect the positioning accuracy, and probes into the influence degree of distance errors by experiment. The experiment results show that the confidence rate of the distance error within 2.5 meters is as high as 95% of a 5 m × 5 m region where four coordinates references are arranged.Keywords:Home HealthcareRFIDPositioning System References See also http://www.irda.org . Google Scholar R. Want et al. , ACM Trans Information System ( England , 1992 ) . Google ScholarP. Bahl and V. N. Padmanabhan, RADAR: An in-building RF-based user location and tracking system, Proc IEEE INFOCOM 20002 (2000) pp. 775–784. Google Scholar Bahl P., Padmanabhan V. N., Balachandran A., Enhancements to the RADAR user location and tracking system, Microsoft Research Technical Report, MSR-TR-2000-12, February 2000 . Google Scholar Bahl P., Padmanabhan V. N., Balachandran A., A software system for locating mobile user: Design, Evaluation, lessons, Technical report, Microsoft Research Technical Report, April 2000 . Google ScholarB. Nissankaet al., The cricket location-support system, Proc. MOBICOM 2000 (2000) pp. 32–43. Google ScholarH. Andyet al., The anatomy of a context-aware application, Proc 5th Annual ACM/IEEE International Conference on Mobile Computing and Networking (1999) pp. 59–68. Google Scholar See also http://www.aetherwire.com . Google Scholar See also http://focus.ti.com/lit/ug/swru008/swru008.pdf . Google Scholar Remember to check out the Most Cited Articles! Notable Biomedical TitlesAuthors from Harvard, Rutgers University, University College London and more! FiguresReferencesRelatedDetails Recommended Vol. 19, No. 02 Metrics History Accepted 6 June 2007 KeywordsHome HealthcareRFIDPositioning SystemPDF download