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High frequency water vapor density measurements using the beat frequency method

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dc.contributor.advisor Selker, John
dc.creator Elorriaga Montenegro, Estefania
dc.date.accessioned 2012-07-10T14:53:47Z
dc.date.available 2012-07-10T14:53:47Z
dc.date.copyright 2012-06-15
dc.date.issued 2012-06-15
dc.identifier.uri http://hdl.handle.net/1957/30841
dc.description Graduation date: 2013 en_US
dc.description.abstract This document describes the design and deployment of a first generation water vapor density sensing unit, the HumiSense. This device is based on an open, air-filled capacitor which is part of a resonant circuit. The frequency of the resonant circuit mixed with a fixed frequency oscillator is the basis of the method to generate a signal that is associated to the change in water vapor density within the open capacitor with time. The physical testing results were inconclusive given that there were many unresolved artifacts in the data. Several suggestions for improving the device for future device generations were provided. en_US
dc.language.iso en_US en_US
dc.subject Water vapor density en_US
dc.subject Turbulence en_US
dc.subject Beat Frequency method en_US
dc.subject Heterodyne system en_US
dc.subject Capacitive sensor en_US
dc.subject Coaxial capacitor en_US
dc.subject.lcsh Water vapor, Atmospheric -- Density -- Measurement -- Instruments -- Design and construction en_US
dc.subject.lcsh Detectors -- Design and construction en_US
dc.subject.lcsh Heterodyning (Electronics) en_US
dc.title High frequency water vapor density measurements using the beat frequency method en_US
dc.type Thesis/Dissertation en_US
dc.degree.name Master of Science (M.S.) in Biological and Ecological Engineering en_US
dc.degree.level Master's en_US
dc.degree.discipline Engineering en_US
dc.degree.grantor Oregon State University en_US
dc.contributor.committeemember Thomas, Christoph
dc.contributor.committeemember Wagner, James
dc.contributor.committeemember Kleber, Markus
dc.description.peerreview no en_us

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