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Sensors 2016, 16(10), 1661; doi:10.3390/s16101661

A Multifunctional Sensor in Ternary Solution Using Canonical Correlations for Variable Links Assessment

1
Harbin Institute of Technology, School of Electrical Engineering & Automation, Harbin 150001, China
2
Harbin Institute of Technology, School of Transportation Science and Engineering, Harbin 150090, China
3
Department of Electrical and Computer Engineering, Virginia Commonwealth University, Richmond, VA 23284, USA
*
Authors to whom correspondence should be addressed.
Academic Editors: Pak Kwong Chan and Holden King-Ho Li
Received: 30 July 2016 / Revised: 27 September 2016 / Accepted: 30 September 2016 / Published: 21 October 2016
(This article belongs to the Special Issue Smart Sensor Interface Circuits and Systems)
View Full-Text   |   Download PDF [1773 KB, uploaded 21 October 2016]   |  

Abstract

Accurately measuring the oil content and salt content of crude oil is very important for both estimating oil reserves and predicting the lifetime of an oil well. There are some problems with the current methods such as high cost, low precision, and difficulties in operation. To solve these problems, we present a multifunctional sensor, which applies, respectively, conductivity method and ultrasound method to measure the contents of oil, water, and salt. Based on cross sensitivity theory, these two transducers are ideally integrated for simplifying the structure. A concentration test of ternary solutions is carried out to testify its effectiveness, and then Canonical Correlation Analysis is applied to evaluate the data. From the perspective of statistics, the sensor inputs, for instance, oil concentration, salt concentration, and temperature, are closely related to its outputs including output voltage and time of flight of ultrasound wave, which further identify the correctness of the sensing theory and the feasibility of the integrated design. Combined with reconstruction algorithms, the sensor can realize the content measurement of the solution precisely. The potential development of the proposed sensor and method in the aspect of online test for crude oil is of important reference and practical value. View Full-Text
Keywords: multifunctional sensor; ternary solution; content measurement; canonical correlation analysis multifunctional sensor; ternary solution; content measurement; canonical correlation analysis
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Liu, D.; Wang, Q.; Liu, X.; Niu, R.; Zhang, Y.; Sun, J. A Multifunctional Sensor in Ternary Solution Using Canonical Correlations for Variable Links Assessment. Sensors 2016, 16, 1661.

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