Note: Temperature-Frequency Calibration Method Based On Spectral Analysis For Qcr Dew Point Sensor
REVIEW OF SCIENTIFIC INSTRUMENTS(2018)
Abstract
Each quartz crystal resonator (QCR) shows different frequency behavior as a function of temperature. To get the curve of the temperature effect compensation during the dew-deposition process, we use the active controlled temperature type of the QCR dew point sensor. In this note, a QCR temperature-frequency calibration method based on spectral analysis is described. It combines FFT and spectral refinement and the parameter table method to achieve high precision frequency extraction. Frequency identification accuracy is 10(-6). The results showed that the method has a good performance in frequency extraction of the QCR sensors. Published by AIP Publishing.
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Key words
calibration,spectral analysis,temperature-frequency
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