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Kim, Kim, Kim, and Yoo: A Study on the Patient Location Monitoring System Based on RFID - RSSI
Original Article
Journal of Korean Society of Medical Informatics

Journal of Korean Society of Medical Informatics 2009; 15(1): 41-48.

Published online: 31 March 2009

DOI: https://doi.org/10.4258/jksmi.2009.15.1.41

A Study on the Patient Location Monitoring System Based on RFID - RSSI

Do-Sung Kim1, 2, Jungchae Kim3, Seung-Ho Kim4, Sun K. Yoo1, 5, 6

1Brain Korea21 Project for Medical Science, Yonsei University, Korea.

2Human Identification Research Center, Yonsei University, Korea.

3Graduate School of Biomedical Engineering, Yonsei University, Korea.

4Department of Emergency Medicine, Yonsei University College of Medicine, Korea.

5Department of Medical Engineering, Yonsei University College of Medicine, Korea.

6Center for Emergency Medical Informatics, Korea.

Corresponding author (sunkyoo@yuhs.ac)

Received 28 March 2008       Accepted 17 September 2008

Copyright © 2009 The Korean Society of Medical Informatics

Abstract

Objective

The location services has been an important research area in the U-Healthcare. The location services in medical environment can be implemented by Radio Frequency Identification (RFID), and Received Signal Strength Indication (RSSI) which is the location tracking method by RFID. In this study, we was designed the Patient Location Monitoring System based on RFID using RSSI method.

Methods

The RSSI method is a distance measurement method from reference points to object using the Friis's Principle and the Triangulation. The Patient Location Monitoring System was implemented by XML Data transmitted from the Positioning Server to the application. The Patient Location Monitoring System was designed by C# of Visual Studio 2005 and MS-SQL 2005 Express.

Results

The Patient Location Monitoring System had the location-tracking average error of 90.50cm, the standard-deviation of 13.34cm in Open-Space test. And, the designed system had the location-tracking average error of 163.24cm, the standard-deviation of 16.85cm in Closed-Space Test. Also, a patient waiting-list guide performance of the Patient Location Monitoring System had successes of 85~100%.

Conclusion

In this study, the Patient Location Monitoring System, combined with both patient location-tracking function and patient waiting-list guide function, was validated by experiments in medical environment and this system can be applicable to patient management and further applications.

Keywords: Radio Frequency Identification (RFID), Received Signal Strength Indication (RSSI), Location services, Patient Location Monitoring System

Figures and Tables

Figure 1
RFID Hardware System Configuration
jksmi-15-41-g001
Figure 2
The Sequence Diagram of Patient Location Monitoring System
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Figure 3
Patient Location Monitoring System Configuration
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Figure 4
(a) A Result for User Interface of Patient Monitoring System
(b) Waiting-List Display Frame in Patient Waiting-Room
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Figure 5
Moving Time of Patients in Examination-Room
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Table 1
Result of Patient Location-Tracking Performance Test
jksmi-15-41-i001

Notes

This research was financially supported by the Ministry of Knowledge Economy(MKE) and Korea Industrial Technology Foundation (KOTEF) through the Human Resource Training Project for Strategic Technology

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