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Fuzzy Logic-Based Approach to Detecting a Passive RFID Tag in an Outpatient Clinic

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Abstract

This study is motivated by the observations on the data collected by radio frequency identification (RFID) readers in a pilot study, which was used to investigate the feasibility of implementing an RFID-based monitoring system in an outpatient eye clinic. The raw RFID data collected from RFID readers contain noise and missing reads, which prevent us from determining the tag location. In this paper, fuzzy logic-based algorithms are proposed to interpret the raw RFID data to extract accurate information. The proposed algorithms determine the location of an RFID tag by evaluating its possibility of presence and absence. To evaluate the performance of the proposed algorithms, numerical experiments are conducted using the data observed in the outpatient eye clinic. Experiments results showed that the proposed algorithms outperform existing static smoothing method in terms of minimizing both false positives and false negatives. Furthermore, the proposed algorithms are applied to a set of simulated data to show the robustness of the proposed algorithms at various levels of RFID reader reliability.

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Correspondence to Daiki Min.

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Min, D., Yih, Y. Fuzzy Logic-Based Approach to Detecting a Passive RFID Tag in an Outpatient Clinic. J Med Syst 35, 423–432 (2011). https://doi.org/10.1007/s10916-009-9377-3

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  • DOI: https://doi.org/10.1007/s10916-009-9377-3

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