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Characterization of Printed Moisture Sensors in Packaging Surveillance Applications
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.ORCID iD: 0000-0002-3790-0729
2009 (English)In: IEEE Sensors Journal, ISSN 1530-437X, E-ISSN 1558-1748, Vol. 9, no 8, 922-928 p.Article in journal (Refereed) Published
Abstract [en]

This work presents a study on the performance of printed low cost moisture sensors fabricated using conductive ink on paper substrates. The sensors are intended to add value to the surveillance of packages. Two different kinds of sensors are evaluated and characterized. The two sensors have similar geometrical shapes, but different measuring principles are employed. The first sensor is measuring the moisture content in cellulose based substrates, while the second is measuring high levels of relative humidity in the surroundings. The sensors have been developed so that they can be integrated into Radio Frequency Identification (RFID) systems for surveillance in logistic chains. A laboratory setup of a RFID tag with sensor capability based on an ordinary passive RFID tag has been shown.

Place, publisher, year, edition, pages
2009. Vol. 9, no 8, 922-928 p.
Keyword [en]
Moisture content sensor, relative humidity sensor, printed sensors
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-7048DOI: 10.1109/JSEN.2009.2024866ISI: 000268020400008Scopus ID: 2-s2.0-67749088246Local ID: 5033OAI: oai:DiVA.org:miun-7048DiVA: diva2:117440
Available from: 2008-11-13 Created: 2008-11-13 Last updated: 2016-10-05Bibliographically approved
In thesis
1. Characterization of Low Cost Printed Sensors for Smart Packaging
Open this publication in new window or tab >>Characterization of Low Cost Printed Sensors for Smart Packaging
2008 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Currently there are very significant interests in printed electronics in the world. The possibility to produce electronics in a roll to roll printing process will considerably reduce the cost of the electronic devices. However, these new devices will most probably not replace the traditional silicon based electronics, but will be a complement in low cost applications such as in intelligent packages and other printable media. One interesting area is printable low cost sensors that add value to packages. In this thesis a study of the performance of low cost sensors is presented. The sensors were fabricated using commercial printing processes used in the graphical printing business. The sensors were characterized and evaluated for the intended application. The evaluated sensors were moisture sensing sensor solutions and touch sensitive sensor solutions.

A printable touch sensitive sensor solution is presented where the sensor is incorporated into a high quality image such as in point of sales displays. The sensor solution showed good touch sensitivity at a variety of humidity levels. Four printed moisture sensor concepts are presented and characterized. Firstly, a moisture sensor that shows good correlation to the moisture content of cellulose based substrates. Secondly, a sensor that measures the relative humidity in the air, the sensor has a measuring accuracy of 0.22% at high relative humidity levels. Thirdly, a moisture sensor that utilizes unsintered silver nano-particles to measure the relative humidity in the air, the sensor has a linear response at very low relative humidity levels. And fourth, an action activated energy cell that provides power when activated by moisture. A concept of remote moisture sensing that utilizes ordinary low cost RFID tags has also been presented and characterized. The remote sensor solution works both with passive and semi-passive RFID systems. The study shows that it is possible to manufacture low cost sensors in commercial printing processes.

Abstract [sv]

Det är för närvarande ett stort intresse för tryckt elektronik. Att kunna tillverka elektroniska komponenter i en rulle till rulle process möjliggör en reducering av tillverkningskostnaden. Dessa nya komponenter kommer sannolikt inte konkurrera ut den traditionella kiselbaserade elektroniken utan kommer att kunna komplimentera kiselelektronik i segment där kostnaden är väldigt viktig som i intelligenta förpackningar och andra tryckta medier. Ett intressant område är tryckta sensorer som kan addera värde till förpackningar. I denna avhandling presenteras en studie kring tryckta sensorer som kan tillverkas till låg kostnad. Sensorerna är tillverkade i kommersiella grafiska tryckpressar. Sensorerna karakteriseras och utvärderas för de applikationer som de är tänkta för. I denna avhandling har fuktsensorer och beröringskänsliga sensorer undersökts.

Det presenteras en tryckt beröringskänslig sensor som integreras i ett högkvalitativt grafiskt tryck. Denna sensor är tänkt att användas i reklamskyltar för att skapa interaktivitet. Sensorn har en bra känslighet vid varierande fukthalter. Även fyra fuktsensorer presenteras och utvärderas. Den första sensorn mäter fukthalten i cellulosabaserade substrat och visar en bra korrelation till fukthalten i substratet. Den andra sensorn mäter den relativa fukten i luften, denna sensor har en mätnoggrannhet på 0.22% för höga fukthalter. Den tredje sensorn använder partiklar i nanostorlek för att mäta fukthalten i luften. Denna sensor fungerar väldigt bra vid låga fukthalter. Den fjärde sensorn är en energicell som producerar el när den blir fuktig. Även en fuktsensor som kan läsas av på håll utvärderas. Detta sensorkoncept är baserad på vanliga RFID taggar och kan användas med både passiva och semi-passiva taggar. Denna avhandling visar att det är möjligt att tillverka sensorer till en låg kostnad in en traditionell grafisk tryckpress.

Place, publisher, year, edition, pages
Sundsvall: Mid Sweden University, 2008. 110 p.
Series
Mid Sweden University licentiate thesis, ISSN 1652-8948 ; 34
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-7049 (URN)978-91-86073-18-3 (ISBN)
Presentation
2008-12-11, O102, Holmgatan 10, Sundsvall, 13:15 (English)
Opponent
Supervisors
Available from: 2008-12-18 Created: 2008-11-13 Last updated: 2011-02-06Bibliographically approved
2. System integration of electronic functionality in packaging application
Open this publication in new window or tab >>System integration of electronic functionality in packaging application
2011 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Sensor applications are becoming increasingly important as products are now being requested to be more and more intelligent and safe. As the costs involved in sensor technology decrease its usage will spread to new market segments including new areas with products that have never previously used such functionalities, including, wood fibre based products for packaging, hygiene or graphical use. Currently there is a significant interest in developing technology that will allow packages to become interactive and be integrated with digital services accessible on the Internet. In this thesis, the system integration of a hybrid RFID based sensor platform is presented. This proposed platform provides a trade-off between the communication performance and its compatibility with international standards and also includes flexibility in on‐package customization, including the type and number of sensors. In addition it combines the use of traditional silicon based electronics with printed electronics directly onto wood fibre based materials so as to enable the possibility of creating smart packages. Together with the system integration of the sensor platform, five printed moisture sensor concepts that are designed to work with the sensor platform are presented and characterized. Firstly, there is a moisture sensor that shows a good correlation to the moisture content of wood fibre based substrates. The second one involves a sensor that detects high relative humidity levels in the air and the third is an action activated energy cell that provides power when activated by moisture. The fourth one deals with two types of moisture sensors that utilize silver nano-particles in order to measure the relative humidity in the air. The final one is a printable touch sensitive sensor that is sensitive to the moisture contained in the hand. A concept of remote moisture sensing that utilizes ordinary low cost RFID tags has also been presented and characterized.

The main focus is thus on system integration to, by combining silicon based electronics with printed electronics, find the most low cost solution with regards to flexibility, sensor functions and still meet the communication standards.

Abstract [sv]

När efterfrågan på mer intelligenta och säkra produkter ökar så ökar även intresset för olika typer av sensorer. När kostnaden för dessa sensorer sjunker så kommer användandet av dessa att utökas till nya marknadssegment som tidigare inte använt denna typ av funktionalitet, som tillexempel pappersbaserade förpackningar, hygienartiklar och papper för grafiskttryck. Det är för närvarande ett stort intresse att utveckla tekniker som tillåter förpackningar att bli interaktiva och integrerade med olika digitala tjänster kopplade till Internet. I denna avhandling så presenteras systemintegrationen av en RFID baserad sensor plattform som tillhandahåller en avvägning mellan kommunikationsprestanda, kompabilitet med internationella standarder och kundanpassningsflexibilitet. Där man direkt på förpackningen kombinerar fördelarna med traditionell kiselbaserad elektronik med trycktelektronik för att kunna skapa intelligenta förpackningar. I avhandlingen presenteras och utvärderas även fem trycka fuktsensorer som är designade att kunna användas tillsammans med sensor plattformen. Den första sensorn mäter fukthalten i cellulosabaserade substrat. Den andra kan detektera höga fukthalter i luften. Den tredje, som aktiveras vid en händelse, producerar en elektrisk ström när den blir fuktig. Den fjärde sensorn använder sig av silverbaserade partiklar i nanostorlek för att mäta fukthalten i luften. Den femte sensorn är en beröringskänslig sensor som ger utslag av fukten i handen. Utöver dessa sensorer så utvärderas även ett koncept med en fuktsensor som kan läsas av på avstånd.

Fokus är således att på system integrationsnivå, med hjälp av att kombinera kisel elektronik med tryckt elektronik, hitta den mest kostnadseffektiva lösningen med avseende på flexibilitet, sensor funktionalitet och att även kunna möta kommunikationsstandarderna.

Place, publisher, year, edition, pages
Sundsvall: Mid Sweden University, 2011. 97 p.
Series
Mid Sweden University doctoral thesis, ISSN 1652-893X ; 112
Keyword
sensor platform, RFID, printed electronics, moisture sensors
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-14311 (URN)STC (Local ID)978‐91‐86694‐49‐4 (ISBN)STC (Archive number)STC (OAI)
Public defence
2011-09-23, O102, Holmgatan 10, Sundsvall, 13:00 (English)
Opponent
Supervisors
Available from: 2011-08-16 Created: 2011-08-15 Last updated: 2016-10-19Bibliographically approved

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