Fast and Accurate Technique for Determination of Moisture Content in Oil Palm Fruits using Open-Ended Coaxial Sensor

Abbas, Zulkifly; You, Kok Yeow; Shaari, Abdul Halim; Zakaria, Azmi; Hassan, Jumiah; Khalid, Kaida; Saion, Elias

doi:10.1143/jjap.44.5272

Cited by 8 publications

(6 citation statements)

References 15 publications

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“…This is probably influenced by high polarization of water in the mixture. The low loss at lower frequency might be attributed to the ionic conductivity of the mixture since dielectric properties agricultural produce are mainly affected by their ionic conductivity in their structure [14].…”

Section: Loss Factor Of Water and Honey Mixturementioning

confidence: 99%

Determination of Adulteration of Honey Syrup Using Open Ended Coaxial Probe Sensor at Microwave Frequency

Yakubu¹,

Abbas²,

Muhammed³

2019

OALib

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Food quality assurance is becoming increasingly important in food processing industry as expectations from the consumers and competitions among food manufacturers continue to grow. For this singular reason, this research work is primarily aimed at studying the dielectric characteristics of pure honey and adulterated ones with a view to determine honey that has been adulterated. In this work, permittivity of pure honey, distilled water and honey-distilled water syrup mixtures with water content from 0% to 80% was studied from 1 to 20 GHz with open-ended coaxial-line sensor and a network analyzer at room temperature. The input reflection coefficient obtained from the vector network analyzer (Agilent 85,071) is then used to calculate and correlate the complex permittivity measured for the water and mixtures. Results showed that the dielectric constants of all samples decreased with increasing frequency, while the pure honey had lower dielectric constant than distilled water but the mixture of water and honey increased with increases in water content. The maximum loss factor decreased with increasing water content.

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Section: Loss Factor Of Water and Honey Mixturementioning

confidence: 99%

Determination of Adulteration of Honey Syrup Using Open Ended Coaxial Probe Sensor at Microwave Frequency

Yakubu¹,

Abbas²,

Muhammed³

2019

OALib

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“…In previous works [14,15], the 2 GHz was studied and it has been suggested as an optimum frequency for monopole antenna in oil palm fruit moisture measurement. The bound water relaxation occurred below 2 GHz.…”

Section: Complex Permittivity With Moisture Contents In Oil Palm Fruitmentioning

confidence: 99%

Analysis on Monopole Antenna for Moisture Determination in Oil Palm Fruit Using Finite Difference Method

Cheng

Abbas

Samsuddin

et al. 2016

Journal of Electrical Engineering and Technology

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-Finite difference analysis were applied to study the principle operation of monopole antenna for moisture determination in oil palm fruit at 2 GHz. The electromagnetic field interact with oil palm fruit on the interface between the antenna and oil palm fruit and cause a reflection. The reflection measurement is based on mismatch impedance or dielectric properties between two media. Reflection coefficient is used to quantify the level of reflection. The monopole antenna was made of RG405/U semi-rigid coaxial cable with an inner and outer diameter of 0.45 mm and 1.50 mm, respectively with 2.23 mm length of protruding conductor over 5.66 cm length of monopole antenna. This monopole antenna for moisture detection was compared with induced EMF method in terms of reflection coefficient at 2 GHz. The results show that the complex reflection coefficient measured using monopole antenna provides significant results to predict moisture content in oil palm fruit.

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“…N OPEN ENDED coaxial line has been used by many researchers for measuring the complex permittivity of materials nondestructively [1]- [4]. In this method, the sample is placed against an open end of a coaxial line and its reflection coefficient is measured.…”

Section: Introductionmentioning

confidence: 99%

A Simple Procedure to Determine Complex Permittivity of Moist Materials Using Standard Commercial Coaxial Sensor

Jusoh¹,

Abbas²,

Hassan³

et al. 2011

Measurement Science Review

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A simple procedure was developed to determine complex permittivity of moist materials for known percentage of moisture content at any frequency based using a standard commercial coaxial sensor. Polynomial fitting and Gaussian elimination method were applied to obtain a single equation of complex permittivity as a function of frequency and moisture content. The empirical equation was tested for new samples and was found to have mean error percentage of 5.14 % and 10.22 % for dielectric constant and loss factor, respectively, when compared to a commercial probe.

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Fast and Accurate Technique for Determination of Moisture Content in Oil Palm Fruits using Open-Ended Coaxial Sensor

Cited by 8 publications

References 15 publications

Determination of Adulteration of Honey Syrup Using Open Ended Coaxial Probe Sensor at Microwave Frequency

Determination of Adulteration of Honey Syrup Using Open Ended Coaxial Probe Sensor at Microwave Frequency

Analysis on Monopole Antenna for Moisture Determination in Oil Palm Fruit Using Finite Difference Method

A Simple Procedure to Determine Complex Permittivity of Moist Materials Using Standard Commercial Coaxial Sensor

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