Design, Fabrication and Testing of Fringing Electric Field Soil Moisture Sensor for Wireless Precision Agriculture Applications

Sulaiman, Suraya; Manut, Azrif; Firdaus, A.R. Nur

doi:10.1109/icimt.2009.54

Cited by 21 publications

(8 citation statements)

References 2 publications

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“…Another technique utilizes two or more rigid metal rods as the electrodes for measuring soil moisture [19]. Many applications, however, utilize a planar electrode configuration where the electrodes are arrayed as parallel fingers on a nonconductive substrate [20][21][22]. Another electrode configuration for fringing field sensing is a two-dimensional array of metal electrode islands [23].…”

Section: A Capacitive Fringing Field Sensing Structuresmentioning

confidence: 99%

Capacitive Fringing Field Moisture Sensors Implemented in Flexible Printed Circuit Board Technology

Dean¹,

Hamilton²,

Baginski³

2014

Journal of Microelectronics and Electronic Packaging

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AbstractÀCapacitive fringing field sensors are often used in applications where moisture is detected, since the dielectric constant of liquid water is approximately 80 times greater than the dielectric constant of air. Most of these sensors, however, are realized using rigid substrates. Some applications would benefit from using a flexible capacitive fringing field sensor that could be conformally mounted on a nonplanar surface. Flexible printed circuit board technology is a mature commercially available process for manufacturing flexible electronics. This same technology can also be used to realize flexible fringing field moisture sensors where the patterned Cu foil is used for the electrodes and the soldermask coating electrically insulates the electrodes from being electrically shorted by moisture in the detection environment. Sensors were designed and characterized through flat and bending tests in air and in water. The tests demonstrated that bending a sensor over a radius of curvature as small as 13.7 mm had no measurable impact on sensor performance in air or in water. The sensors achieved a 3:1 increase in capacitance when immersed in water compared with in air.

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Section: A Capacitive Fringing Field Sensing Structuresmentioning

confidence: 99%

Capacitive Fringing Field Moisture Sensors Implemented in Flexible Printed Circuit Board Technology

Dean¹,

Hamilton²,

Baginski³

2014

Journal of Microelectronics and Electronic Packaging

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“…In all three cases, electric field lines pass through the sample; therefore, the capacitance and conductance between the two electrodes depends on the material dielectric properties as well as on the electrode and material geometry. This general principle allows design of sensors for a very broad spectrum of applications including relating changes in electrical properties to physical properties such as moisture, temperature, density, defects [5]. In order to build up an easily measurable electrode structure, the coplanar strips pattern could be repeated several times, which is called interdigital electrode.…”

Section: Water Tree Detection Modulementioning

confidence: 99%

A Novel FEF Method for Insulation Status Monitoring of Underground Power Cables

Dian¹,

Liang²,

Lou³

et al. 2013

JCP

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Monitoring on underground power cables in a close-fitting manner using mobile robot can acquire more actual information about insulation status of cables. Focusing on a water tree detection module in the monitoring system, this paper proposes fringing electric field (FEF) method to detect probably formed water tree in the insulation layer. An arch substrate based interdigital FEF sensor is designed to reduce the disturbance caused by applying traditional interdigital FEF sensor in the water tree detection. The mathematical model of the novel sensor is built by finite element method. Comparison of the electric field distribution that produced by the above two kinds of sensors is carried out by finite element analysis. Effect on novel sensor performance caused by excitation frequency is discussed. Parameters of the proposed sensor are optimized by analyzing the electric field penetrability with varying finger width and electrode separation. Simulation results demonstrate the sensor's design is reasonable and the electric field penetrability of the novel sensor is remarkably improved compared with traditional interdigital FEF sensor.

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“…Concretely, ZigBee is an open and global standard for WSN with a low rate, low cost, low power consumption and self-forming wireless communication, which make it ideal for the development of applications focused on sensor and automatic control. Several current applications using ZigBee technology are found in the literature, such as soil moisture monitoring (Morais et al, 2008;Sulaiman et al, 2009), microclimate real-time monitoring (Watthanawisuth et al, 2009), temperature monitoring in all phases of wine production (Boquete et al, 2010), and soil water monitoring for decision making in a sprinkler irrigation system (Kim et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Performance indicators to assess the implementation of automation in water user associations: A case study in southeast Spain

Fernández-Pacheco

Ferrández-Villena

Molina-Martínez

et al. 2015

Agricultural Water Management

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Design, Fabrication and Testing of Fringing Electric Field Soil Moisture Sensor for Wireless Precision Agriculture Applications

Cited by 21 publications

References 2 publications

Capacitive Fringing Field Moisture Sensors Implemented in Flexible Printed Circuit Board Technology

Capacitive Fringing Field Moisture Sensors Implemented in Flexible Printed Circuit Board Technology

A Novel FEF Method for Insulation Status Monitoring of Underground Power Cables

Performance indicators to assess the implementation of automation in water user associations: A case study in southeast Spain

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