Wireless indoor positioning with vertically uniform alternating magnetic fields

Xiaokang Qi, Lei Chen, Kang An, Jun Wang, Chao Ma, Bin Zhang, Kuiwen Xu, Huan Li, Dexin Ye, Jiangtao Huangfu, Changzhi Li, Lixin Ran

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

With the growing demands for localizing humans and mobile service robots, wireless indoor positioning has become a hot topic. Due to inevitable multipath scatterings in indoor spaces, technical challenges still exist. In this paper, we propose a new solution based on vertically uniform alternating magnetic fields. Such fields can be established by long coils driven by watt-level alternating currents with hertz-scale frequencies. Detected by commercial magnetic sensors, the coexisting dual-frequency magnetic fields are able to distribute in indoor spaces with tens of square meters. With 104-km-scale wavelengths, indoor obstacles can be considered as negligible Rayleigh scatters, and thus, this method is robust in complex indoor environments. Insensitive to height, the vertically polarized magnetic fields can be conveniently detected by existing smartphones, implying a human-oriented WIP based on smartphones.

Original languageEnglish
Article number8438333
Pages (from-to)2733-2735
Number of pages3
JournalIEEE Transactions on Instrumentation and Measurement
Volume67
Issue number11
DOIs
StatePublished - Nov 2018

Keywords

  • Alternating magnetic fields
  • magnetic sensors
  • vertical fields
  • wireless indoor positioning (WIP)

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  • Cite this

    Qi, X., Chen, L., An, K., Wang, J., Ma, C., Zhang, B., Xu, K., Li, H., Ye, D., Huangfu, J., Li, C., & Ran, L. (2018). Wireless indoor positioning with vertically uniform alternating magnetic fields. IEEE Transactions on Instrumentation and Measurement, 67(11), 2733-2735. [8438333]. https://doi.org/10.1109/TIM.2018.2861118