Article
Refine
Year of publication
- 2013 (138) (remove)
Institute
- Fachbereich Medizintechnik und Technomathematik (48)
- INB - Institut für Nano- und Biotechnologien (32)
- Fachbereich Chemie und Biotechnologie (24)
- IfB - Institut für Bioengineering (20)
- Fachbereich Wirtschaftswissenschaften (18)
- Fachbereich Elektrotechnik und Informationstechnik (13)
- Fachbereich Energietechnik (12)
- Sonstiges (6)
- Fachbereich Luft- und Raumfahrttechnik (5)
- Fachbereich Bauingenieurwesen (4)
Has Fulltext
- no (138) (remove)
Document Type
- Article (138) (remove)
Keywords
The response of Bacillus licheniformis to heat and ethanol stress and the role of the SigB regulon
(2013)
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.