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dc.contributor.authorBrunner, Basil-
dc.contributor.authorKüng, Roland-
dc.contributor.authorSträssler, Daniel-
dc.date.accessioned2019-04-04T12:44:52Z-
dc.date.available2019-04-04T12:44:52Z-
dc.date.issued2016-
dc.identifier.isbn978-3-645-50161-3de_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/16475-
dc.description.abstractThe effective monitoring of building constructions increases the safety, cuts down on maintenance costs and builds a solid basis for sustainability. Therefore a reliable and uncomplicated acquisition of meaningful sensor data from modules embedded into the constructions are vital. A passive RFID based sensor system that measures mechanical stress in reinforcing steel was developed at the Centre for Signal Processing and Communications Engineering (ZSN) at the ZHAW University of Applied Sciences, Switzerland. The system enables the monitoring of building structures over their whole lifespan (>30 years). The newly developed compact strain sensor operates wireless and can therefore be completely embedded in concrete in comparison to older systems, which were wire bound. The project was initiated by enertec engineering AG, Switzerland. To perform a measurement the loop antenna of the portable RFID reader is held over the surface of the building structure. Energy harvesting from the 13.56 MHz RF-field delivers the necessary power for operating the batteryless sensor. The strain is converted to an electrical signal with 350 Ω strain gauges in bridge configuration. The signal is afterwards amplified, digitised and stored in an EEPROM. The worldwide RFID standard ISO 15693 at a frequency of 13.56 MHz is used for the communication of commands and for reading out the stored data. A Windows based graphical user interface (GUI) is used to configure the sensor and display the measured data as well as to connect the sensor to the IoT. The sensor has an accuracy of well under 1 MPa in a measuring range of ±1600 MPa. A reader with 2 Watt transmission power can identify the sensor up to a distance of 40 cm. The maximum measuring distance is 14 cm, limited by the wireless transfer of the harvesting energy. This is a triplication of other known systems on the market due to efficient energy harvesting circuit and using a very low power electronic design. For monitoring dynamic processes, e.g. strain changes of a passing truck, it is possible to capture up to 100 samples per second. A field test was successfully carried out on a newly built bridge. The ease of installation together with the benefit of a fully connector-less sensor in concrete are important success factors for intelligent construction projects.de_CH
dc.language.isoende_CH
dc.publisherWEKAde_CH
dc.relation.ispartofseriesProceedings of the Wireless Congress 2016: Systems & Applicationsde_CH
dc.rightsLicence according to publishing contractde_CH
dc.subjectBatteryless sensorde_CH
dc.subjectPassive HF-RFIDde_CH
dc.subjectEnergy harvestingde_CH
dc.subjectIoTde_CH
dc.subject.ddc004: Informatikde_CH
dc.subject.ddc621.3: Elektro-, Kommunikations-, Steuerungs- und Regelungstechnikde_CH
dc.titleMonitoring of building constructions with passive RFID technologyde_CH
dc.typeKonferenz: Paperde_CH
dcterms.typeTextde_CH
zhaw.departementSchool of Engineeringde_CH
zhaw.organisationalunitInstitute of Signal Processing and Wireless Communications (ISC)de_CH
zhaw.publisher.placeHaarde_CH
zhaw.conference.detailsWireless Congress: Systems & Applications, Munich, Germany, 9-10 November 2016de_CH
zhaw.funding.euNode_CH
zhaw.originated.zhawYesde_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.publication.reviewPeer review (Abstract)de_CH
zhaw.title.proceedingsProceedings of the Wireless Congress 2016: Systems & Applicationsde_CH
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Brunner, B., Küng, R., & Strässler, D. (2016). Monitoring of building constructions with passive RFID technology. Proceedings of the Wireless Congress 2016: Systems & Applications.
Brunner, B., Küng, R. and Strässler, D. (2016) ‘Monitoring of building constructions with passive RFID technology’, in Proceedings of the Wireless Congress 2016: Systems & Applications. Haar: WEKA.
B. Brunner, R. Küng, and D. Strässler, “Monitoring of building constructions with passive RFID technology,” in Proceedings of the Wireless Congress 2016: Systems & Applications, 2016.
BRUNNER, Basil, Roland KÜNG und Daniel STRÄSSLER, 2016. Monitoring of building constructions with passive RFID technology. In: Proceedings of the Wireless Congress 2016: Systems & Applications. Conference paper. Haar: WEKA. 2016. ISBN 978-3-645-50161-3
Brunner, Basil, Roland Küng, and Daniel Strässler. 2016. “Monitoring of Building Constructions with Passive RFID Technology.” Conference paper. In Proceedings of the Wireless Congress 2016: Systems & Applications. Haar: WEKA.
Brunner, Basil, et al. “Monitoring of Building Constructions with Passive RFID Technology.” Proceedings of the Wireless Congress 2016: Systems & Applications, WEKA, 2016.


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