Design, Development and Calibration of Virtual System for Relative Humidity Measurement
In the present paper a frequency mode data acquisition technique, which converts directly relative humidity into a frequency signal, is considered. The system is realized using low cost oscillator, multifunction data acquisition board and capability of virtual instrumentation. In order to automate c...
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doaj-6212bf51dffa4778a60a57da679e56392020-11-24T20:53:37ZengIFSA Publishing, S.L.Sensors & Transducers2306-85151726-54792008-06-01936114Design, Development and Calibration of Virtual System for Relative Humidity MeasurementGeorgi NIKOLOV0Boyanka NIKOLOVA1Faculty of Electronics and Technologies, Technical University of Sofia, Studenstki Grad, TU-Sofia, block 1, room 1366, 1797, Sofia, Bulgaria,Faculty of Electronics and Technologies, Technical University of Sofia, Studenstki Grad, TU-Sofia, block 1, room 1366, 1797, Sofia, Bulgaria,In the present paper a frequency mode data acquisition technique, which converts directly relative humidity into a frequency signal, is considered. The system is realized using low cost oscillator, multifunction data acquisition board and capability of virtual instrumentation. In order to automate calibration procedures appropriate software (so called virtual instrument) is developed and described in brief. Using possibility of virtual instrumentation or to be more precise the build in LabVIEW probability, statistics and interpolation functions a method to increase calibration accuracy is suggested and put into practice. Following this approach the polynomial calibration equation for capacitive sensor is extracted and saved in transducer electronic data sheets file. As example of proposed approach a virtual system based on relative humidity capacitive sensor is realized. The main objective of this paper is to demonstrate how with virtual instrumentation can be solved some difficult engineering problems such as relative humidity calibration and measurement.http://www.sensorsportal.com/HTML/DIGEST/june_08/P_283.pdfCapacitive sensorsFrequency measurementGraphical programmingRH calibrationVirtual Instrumentation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Georgi NIKOLOV Boyanka NIKOLOVA |
spellingShingle |
Georgi NIKOLOV Boyanka NIKOLOVA Design, Development and Calibration of Virtual System for Relative Humidity Measurement Sensors & Transducers Capacitive sensors Frequency measurement Graphical programming RH calibration Virtual Instrumentation |
author_facet |
Georgi NIKOLOV Boyanka NIKOLOVA |
author_sort |
Georgi NIKOLOV |
title |
Design, Development and Calibration of Virtual System for Relative Humidity Measurement |
title_short |
Design, Development and Calibration of Virtual System for Relative Humidity Measurement |
title_full |
Design, Development and Calibration of Virtual System for Relative Humidity Measurement |
title_fullStr |
Design, Development and Calibration of Virtual System for Relative Humidity Measurement |
title_full_unstemmed |
Design, Development and Calibration of Virtual System for Relative Humidity Measurement |
title_sort |
design, development and calibration of virtual system for relative humidity measurement |
publisher |
IFSA Publishing, S.L. |
series |
Sensors & Transducers |
issn |
2306-8515 1726-5479 |
publishDate |
2008-06-01 |
description |
In the present paper a frequency mode data acquisition technique, which converts directly relative humidity into a frequency signal, is considered. The system is realized using low cost oscillator, multifunction data acquisition board and capability of virtual instrumentation. In order to automate calibration procedures appropriate software (so called virtual instrument) is developed and described in brief. Using possibility of virtual instrumentation or to be more precise the build in LabVIEW probability, statistics and interpolation functions a method to increase calibration accuracy is suggested and put into practice. Following this approach the polynomial calibration equation for capacitive sensor is extracted and saved in transducer electronic data sheets file. As example of proposed approach a virtual system based on relative humidity capacitive sensor is realized. The main objective of this paper is to demonstrate how with virtual instrumentation can be solved some difficult engineering problems such as relative humidity calibration and measurement. |
topic |
Capacitive sensors Frequency measurement Graphical programming RH calibration Virtual Instrumentation |
url |
http://www.sensorsportal.com/HTML/DIGEST/june_08/P_283.pdf |
work_keys_str_mv |
AT georginikolov designdevelopmentandcalibrationofvirtualsystemforrelativehumiditymeasurement AT boyankanikolova designdevelopmentandcalibrationofvirtualsystemforrelativehumiditymeasurement |
_version_ |
1716796791435821056 |