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A Self-Oscillating System to Measure the Conductivity and the Permittivity of Liquids within a Single Triangular Signal
المؤلفون المشاركون
Francis, Laurent
Druart, Sylvain
Flandre, Denis
المصدر
العدد
المجلد 2014، العدد 2014 (31 ديسمبر/كانون الأول 2014)، ص ص. 1-11، 11ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2014-02-13
دولة النشر
مصر
عدد الصفحات
11
التخصصات الرئيسية
الملخص EN
We present a methodology and a circuit to extract liquid resistance and capacitance simultaneously from the same output signal using interdigitated sensing electrodes.
The principle consists in the generation of a current square wave and its application to the sensor to create a triangular output voltage which contains both the conductivity and permittivity parameters in a single periodic segment.
This concept extends the Triangular Waveform Voltage (TWV) signal generation technique and is implemented by a system which consists in a closed-loop current-controlled oscillator and only requires DC power to operate.
The system interface is portable and only a small number of electrical components are used to generate the expected signal.
Conductivities of saline NaCl and KCl solutions, being first calibrated by commercial equipment, are characterized by a system prototype.
The results show excellent linearity and prove the repeatability of the measurements.
Experiments on water-glycerol mixtures validate the proposed sensing approach to measure the permittivity and the conductivity simultaneously.
We discussed and identified the sources of measurement errors as circuit parasitic capacitances, switching clock feedthrough, charge injection, bandwidth, and control-current quality.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Druart, Sylvain& Flandre, Denis& Francis, Laurent. 2014. A Self-Oscillating System to Measure the Conductivity and the Permittivity of Liquids within a Single Triangular Signal. Journal of Sensors،Vol. 2014, no. 2014, pp.1-11.
https://search.emarefa.net/detail/BIM-1042953
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Druart, Sylvain…[et al.]. A Self-Oscillating System to Measure the Conductivity and the Permittivity of Liquids within a Single Triangular Signal. Journal of Sensors No. 2014 (2014), pp.1-11.
https://search.emarefa.net/detail/BIM-1042953
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Druart, Sylvain& Flandre, Denis& Francis, Laurent. A Self-Oscillating System to Measure the Conductivity and the Permittivity of Liquids within a Single Triangular Signal. Journal of Sensors. 2014. Vol. 2014, no. 2014, pp.1-11.
https://search.emarefa.net/detail/BIM-1042953
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1042953
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
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