A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Novel sensor systems for structural health monitoring
Two measurement systems for monitoring moisture and alkalinity of civil structures are presented. The moisture system operates at microwave frequencies around 2.45 GHz and consists of a robust sensor linked to a compact measurement unit. The alkalinity is determined by a chemical fiber-optical sensor operating in the visible spectrum. Two different sensor systems are presented. The first one operates in the microwave frequency range and is designed to monitor the moisture within concrete structures. It consists of a small and robust sensor linked to a miniaturized low-cost NWA. Its operating frequency ranges from 2.252 GHz up to 2.73 GHz and the device allows the determination of the moisture with an accuracy of 4%. For monitoring pH a fiber-optical system is introduced, which can control up to nine sensors. These sensors apply a sensitive dye as optical transducer. A simple analysis method of the absorption spectrum provides information about pH. This method can be utilized by another optical set-up, which is based upon integration of LED's and pin-diodes on one chip. For an increased safety level, both sensor systems are intended to be integrated within a unified measurement platform.
Novel sensor systems for structural health monitoring
Two measurement systems for monitoring moisture and alkalinity of civil structures are presented. The moisture system operates at microwave frequencies around 2.45 GHz and consists of a robust sensor linked to a compact measurement unit. The alkalinity is determined by a chemical fiber-optical sensor operating in the visible spectrum. Two different sensor systems are presented. The first one operates in the microwave frequency range and is designed to monitor the moisture within concrete structures. It consists of a small and robust sensor linked to a miniaturized low-cost NWA. Its operating frequency ranges from 2.252 GHz up to 2.73 GHz and the device allows the determination of the moisture with an accuracy of 4%. For monitoring pH a fiber-optical system is introduced, which can control up to nine sensors. These sensors apply a sensitive dye as optical transducer. A simple analysis method of the absorption spectrum provides information about pH. This method can be utilized by another optical set-up, which is based upon integration of LED's and pin-diodes on one chip. For an increased safety level, both sensor systems are intended to be integrated within a unified measurement platform.
Novel sensor systems for structural health monitoring
Ein neuartiges Sensorsystem für die Funktionssicherheitsüberwachung von Gebäuden
Blumentritt, M. (author) / Brodersen, O. (author) / Flachsbarth, J. (author) / Johannes, H.H. (author) / Kröner, M. (author) / Melhorn, K. (author) / Sokoll, T. (author) / Jacob, A.F. (author) / Kowalsky (author)
2006
9 Seiten, 10 Bilder, 7 Quellen
Conference paper
English
Novel Sensor Systems for Structural Health Monitoring
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