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A printed capacitance sensor for soil moisture measurement

A printed capacitance sensor for soil moisture measurement
A printed capacitance sensor for soil moisture measurement
TDR (Time Domain Reflectometry) has been shown to give a good measurement of soil moisture by measurement of permittivity. However, TDR is expensive and power-hungry. This work describes an alternative approach to designing a soil moisture sensor that is also using the dielectric constant, but tackles some of the drawbacks of TDR. The aim is to infer the water content in soil by obtaining it's permittivity via the measurement of the capacitance of a PCB capacitor. The simple design of the sensor allows mass-manufacturing at a low cost, enabling a large number of the sensors to be deployed networked. This makes it ideal for those requiring soil moisture monitoring over a large area such as farmers, to do so without a large financial cost.
Harris, Nicholas
237cfdbd-86e4-4025-869c-c85136f14dfd
Stonard, Alex
acd61de2-c950-47f8-9b12-a8d0438b4b28
Harris, Nicholas
237cfdbd-86e4-4025-869c-c85136f14dfd
Stonard, Alex
acd61de2-c950-47f8-9b12-a8d0438b4b28

Harris, Nicholas and Stonard, Alex (2018) A printed capacitance sensor for soil moisture measurement. Eurosensors 2018, Graz, Austria. 02 - 05 Sep 2018. 2 pp .

Record type: Conference or Workshop Item (Poster)

Abstract

TDR (Time Domain Reflectometry) has been shown to give a good measurement of soil moisture by measurement of permittivity. However, TDR is expensive and power-hungry. This work describes an alternative approach to designing a soil moisture sensor that is also using the dielectric constant, but tackles some of the drawbacks of TDR. The aim is to infer the water content in soil by obtaining it's permittivity via the measurement of the capacitance of a PCB capacitor. The simple design of the sensor allows mass-manufacturing at a low cost, enabling a large number of the sensors to be deployed networked. This makes it ideal for those requiring soil moisture monitoring over a large area such as farmers, to do so without a large financial cost.

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More information

Published date: September 2018
Venue - Dates: Eurosensors 2018, Graz, Austria, 2018-09-02 - 2018-09-05

Identifiers

Local EPrints ID: 423815
URI: http://eprints.soton.ac.uk/id/eprint/423815
PURE UUID: 78603e70-f8d0-4586-9096-b41dbe29c81c
ORCID for Nicholas Harris: ORCID iD orcid.org/0000-0003-4122-2219

Catalogue record

Date deposited: 02 Oct 2018 16:30
Last modified: 14 Mar 2019 01:53

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