An Impedimetric Cu-Polymer Sensor-Based Conductivity Meter for Precision Agriculture and Aquaculture Applications

被引：16

作者：

Adhikary, Avishek ^{[1
]}

Roy, Joydip ^{[2
]}

Kumar, Anaparthi Ganesh ^{[3
]}

Banerjee, Susanta ^{[3
]}

Biswas, Karabi ^{[2
]}

机构：

[1] Indian Inst Technol IIT Bhilai, Dept Elect Engn & Comp Sci, Datrenga 492015, India

[2] Indian Inst Technol IIT Kharagpur, Dept Elect Engn, Kharagpur 721302, W Bengal, India

[3] Indian Inst Technol IIT Kharagpur, Mat Sci Ctr, Kharagpur 721302, W Bengal, India

来源：

IEEE SENSORS JOURNAL | 2019年 / 19卷 / 24期

关键词：

Aqueous conductivity sensor; two-electrode; impedimetry; conductivity cell; precision agriculture and aquaculture; temperature compensation; ELECTRICAL-CONDUCTIVITY; WATER; SALINITY; INTERFACE;

D O I：

10.1109/JSEN.2019.2940159

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents a two-electrode type conductivity sensor, using copper as electrodes, coated with a polyimide layer called DQN-60. This sensor is specially designed to be robust yet inexpensive for applications like precision farming and fishery. A new conductivity sensing principle is proposed which is based on impedimetric measurement (both magnitude and phase) at a frequency of 200 kHz. This sensing principle is developed by analyzing the electrical equivalent model of the proposed sensor and is aimed at eliminating the effect of the interface impedance and the cell capacitance thus making the measurement linear and accurate. A prototype meter is developed with 3.75% maximum full-scale error in the range of 0.5 mu S/cm to 20 mS/cm. The temperature compensation, calibration, and detailed experimental results are also discussed.

引用

页码：12087 / 12095

页数：9

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