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Towards a wireless sensor system for real-time H2O2 monitoring in aseptic food processes

  • A wireless sensor system based on the industrial ZigBee standard for low-rate wireless networking was developed that enables real-time monitoring of gaseous H2O2 during the package sterilization in aseptic food processes. The sensor system consists of a remote unit connected to a calorimetric gas sensor, which was already established in former works, and an external base unit connected to a laptop computer. The remote unit was built up by an XBee radio frequency (RF) module for data communication and a programmable system-on-chip controller to read out the sensor signal and process the sensor data, whereas the base unit is a second XBee RF module. For the rapid H2O2 detection on various locations inside the package that has to be sterilized, a novel read-out strategy of the calorimetric gas sensor was established, wherein the sensor response is measured within the short sterilization time and correlated with the present H2O2 concentration. In an exemplary measurement application in an aseptic filling machinery, the suitability of the new, wireless sensor system was demonstrated, wherein the influence of the gas velocity on the H2O2 distribution inside a package was determined and verified with microbiological tests.

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Metadaten
Author:Patrick Kirchner, Jan OberländerORCiD, Henri-Pierre Suso, Gunnar Rysstad, Michael Keusgen, Michael Josef SchöningORCiD
ISSN:1862-6319
Parent Title (English):Physica status solidi (a)
Publisher:Wiley
Place of publication:Weinheim
Document Type:Article
Language:English
Year of Completion:2013
Date of the Publication (Server):2013/02/25
Tag:calorimetric gas sensor;hydrogen peroxide;wireless sensor system
Volume:Vol. 210
Issue:Iss. 5
First Page:877
Last Page:883
Link:http://dx.doi.org/10.1002/pssa.201200920
Zugriffsart:campus
Institutes:FH Aachen / Fachbereich Medizintechnik und Technomathematik
FH Aachen / INB - Institut für Nano- und Biotechnologien
collections:Verlag / Wiley