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Citation Information : International Journal on Smart Sensing and Intelligent Systems. Volume 3, Issue 3, Pages 322-337, DOI: https://doi.org/10.21307/ijssis-2017-395
License : (CC BY-NC-ND 4.0)
Published Online: 13-December-2017
This paper presents a novel microwave cavity sensor application for the detection of HEPA filter particulate loading. The sensor resonates at 3.435GHz and 8.570GHz when empty, where the TM010 and TM020 modes dominate respectively. Experimental results show that the resonant frequency of the sensor shifts significantly when filters of different particulate loadings are presented to it. This is a significant finding, and means that the sensor could present an effective solution for determining the
loading of periodic use HEPA filters (e.g. those used in personal respirators), which are often disposed of unnecessarily.
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