A Printed Capacitance Sensor for Soil Moisture Measurement

Proceedings

Stonard, Alexander¹  Harris, Nicholas R.² 

[1] Author to whom correspondence should be addressed.;Department of Electronics and Computer Science, University of Southampton, Southampton SO17 1BJ, UK

关键词: moisture;    sensor;    low-power;    IoT;    agriculture;   

DOI  :  10.3390/proceedings2130705

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

The introduction and evaluation of a novel sensor design for a soil moisture sensor that can be manufactured on a PCB. The PCB acts as a capacitor, which uses the fringe effect to allow changes in permittivity of its surrounding medium to be identified, and this capacitance is measured via relatively simple charge and discharge times between two voltages through a series resistor. The system is implemented in a low-cost microcontroller, and coupled with being printable on a PCB, has the potential to make a highly cost-effective sensor. A custom Android Bluetooth application was produced to provide communication with and configuration of the sensor.

【 授权许可】

CC BY