Wireless Personal Communications

, Volume 59, Issue 1, pp 57–71 | Cite as

Robust System for Indoor Localisation and Identification for the Health Care Environment

Open Access
Article

Abstract

In this study, an improved version of the low-frequency indoor location system, with a larger detection range and more durable antenna laminate, is presented. The basic system uses quad antennas, placed under the floor surface, to locate tags with 125-kHz radio signals. The improvements were achieved with a one-layer laminate construction and transmitter electronics that can feed larger currents to the antennas. The measured tag detection height was 2 m, which is adequate for location applications. The low-frequency signal was not affected by normal objects. The tag location reliability of 96.3% was verified with a practical test.

Keywords

Indoor location Low frequency Near field imaging Signal penetration 

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Copyright information

© The Author(s) 2010

Authors and Affiliations

  • Antti Ropponen
    • 1
  • Henry Rimminen
    • 1
  • Raimo Sepponen
    • 1
  1. 1.Department of ElectronicsAalto UniversityAaltoFinland

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