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Modified EAS Tag Used as a Resistive Sensor Platform
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för informationsteknologi och medier.
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för informationsteknologi och medier.ORCID-id: 0000-0003-1967-4016
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för informationsteknologi och medier.
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för informationsteknologi och medier.
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2012 (engelsk)Inngår i: MDPI Electronics, ISSN 2079-9292, Vol. 1, nr 2, s. 32-46Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

In this article, a modified design of an RF Radio Frequency Electronic ArticleSurveillance (EAS) tag, used as a sensor platform, is manufactured and characterized. EAStags are passive devices consisting of a capacitor and coil, tuned to a resonance frequencyreadable by the detector equipment, in this case 8.2 MHz. They were originally used todetect whether merchandise was being moved through the detection gates at shop exits, inwhich case an alarm was triggered. If the capacitance is divided in two and a resistivesensor device inserted in between, the resonant Inductor-Capacitor (LC) circuit becomes anInductor-Capacitor-Capacitor-Resistor LCCR circuit and can be used as a sensor tag. Ahigh sensor resistance means that one capacitor is decoupled, leading to one resonancefrequency, while a low resistance will couple both capacitances into the circuit, resulting ina lower resonance frequency. Different types of resistive sensors exist that are able todetect properties such as pressure, moisture, light and temperature. The tag is manufacturedin Aluminum foil on a polyetylentereftalat (PET) substrate, resulting in a cost effectiveRF-platform for various resistive sensors. Two types of tags are designed andmanufactured, one with parallel plate capacitors and the other with interdigital capacitors.To test the tags, a resistive tilt sensor is mounted and the tags are characterized using anetwork analyzer. It is shown that for high resistance, the tags have a resonance frequencyof more than 10 MHz while for low values the frequency approaches 8.2 MHz.

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2012. Vol. 1, nr 2, s. 32-46
Emneord [en]
EAS tag, sensor
HSV kategori
Identifikatorer
URN: urn:nbn:se:miun:diva-17444DOI: 10.3390/electronics1020032Scopus ID: 2-s2.0-84930001475Lokal ID: STCOAI: oai:DiVA.org:miun-17444DiVA, id: diva2:572234
Tilgjengelig fra: 2012-11-27 Laget: 2012-11-27 Sist oppdatert: 2016-10-20bibliografisk kontrollert

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