A Fringing Field Based Screen-Printed Flexible Capacitive Moisture and Water Level Sensor

被引：0

作者：

Malik, Shahid ^{[1
]}

Somappa, Laxmeesha ^{[1
]}

Ahmad, Meraj ^{[1
]}

Sonkusale, Sameer ^{[2
]}

Baghini, Maryam Shojaei ^{[1
]}

机构：

[1] Indian Inst Technol, Elect Engn Dept, Mumbai, Maharashtra, India

[2] Tufts Univ, Dept Elect & Comp Engn, Medford, MA 02155 USA

来源：

2020 IEEE INTERNATIONAL CONFERENCE ON FLEXIBLE AND PRINTABLE SENSORS AND SYSTEMS (IEEE FLEPS 2020) | 2020年

关键词：

Fringing field; capacitive sensor; carbon paste; moisture sensor; water-level sensor;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A simple, low cost, screen-printed flexible capacitive sensor for moisture, and water level detection is presented in this paper. The sensor is fabricated on the flexible polyamide substrate. The interdigitated structure electrodes are screen printed on the substrate to form the capacitive fingers using carbon paste. The relative permittivity of the medium changes due to the water vapors on the sensor, which in turn changes the capacitance of the sensor due to the fringing field. A novel auto-nulling based signal conditioning circuit was utilized to measure the capacitance of the sensor. The flexible nature of the sensor enhances the use of the fabricated capacitive sensor in applications such as diaper wetness monitoring, soil moisture monitoring, body hydration monitoring.

引用

页数：4

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