Measured natural frequencies of mangosteens

Leekul, Prapan; Krairiksh, M.

doi:10.1109/apcap.2018.8538096

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…This disorder can make the fruit taste bitter and unpleasant. Currently, the detection of transparent yellow sap and mangosteen pulp after harvest is carried out by two techniques [11]. The first is a destructive technique by damaging the object being observed.…”

Section: Introductionmentioning

confidence: 99%

Microwave Non-destructive Technique using a Double-ring Resonator for Classification of Transparent Flesh and Yellow gum Mangosteens

Mustiko Okta Muvianto,

Yuniarto,

Ariessaputra

et al. 2023

E3S Web of Conf.

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One of the most important agricultural commodities exported from Indonesia is mangosteen. Mangosteens are not always fruits without flaws, in any case. To categorize the quality of mangosteen fruits, farmers employ human eyesight. As a result, this data can be unreliable and erroneous after harvesting. Both internal and exterior flaws are possible. Some spots include improper form, a hardening pericarp, yellow gumming, or transparent flesh. Often, the longest part, the translucent skin, might be difficult to see. Treatment for these disorders must be non-invasive and nondestructive. In this essay, a double-ring microstrip resonator modification is suggested and examined. The mangosteen fruits were measured using the resonator and divided into three groups. Ordinary, transparent flesh and yellow gumming are the classifications. 1.4 GHz is the resonator's operating frequency. By detecting the return loss value and the S21 value at a frequency between 100 MHz and 3 GHz, the sensor ascertains the dielectric value of each mangosteen fruit. At frequencies of 1.15 GHz-1.28 GHz and 1.42 GHz-1.52 GHz, and with dielectric constants between 2.98 and 3.28, there is a variation in permittivity values between the categories of regular, clear, and yellow mangosteen.

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Section: Introductionmentioning

confidence: 99%

Microwave Non-destructive Technique using a Double-ring Resonator for Classification of Transparent Flesh and Yellow gum Mangosteens

Mustiko Okta Muvianto,

Yuniarto,

Ariessaputra

et al. 2023

E3S Web of Conf.

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“…The system with an eight-beam array proved the quality control of tangerines and other agricultural products. Leekul et al [66] proposed measured natural frequencies of mangosteens. The experiments in this work showed that the frequency difference of normal and translucent mangosteens is approximately 12 MHz which is sufficient for translucent mangosteen classification.…”

Section: Introductionmentioning

confidence: 99%

A Design Method for a Microwave-Based Moisture Sensing System for Granular Materials in Arbitrarily Shaped Containers

2021

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To estimate the moisture in an entire arbitrarily shaped workpiece, an automatic system should continuously sense moisture at all points of the workpiece. This paper proposes a design method for a microwavebased moisture sensing system for granular materials in arbitrarily shaped containers based on scanning in a moisture sensing box. The size of the moisture sensing box is first determined as the maximum size of any granular material containers based on initial user requirements. The moisture sensing system physically consists of a pair of antennas for microwave transmission and reception and a pair of distance sensors scanning throughout the maximum scanning range of the moisture sensing box to find the attenuation and workpiece thickness at all points of the workpiece, and these sensed microwave attenuations and workpiece thickness measurements are then used to calculate the moisture at all points of the workpiece. The average moisture of all points is finally taken as the estimated moisture of the whole workpiece.To evaluate the performance of the proposed system, experiments have been performed with granular materials in containers of various shapes, and the estimation results show the proposed method of continuous moisture scanning of a workpiece can improve 7.77% approximately compared with the antenna array approach.

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Measured natural frequencies of mangosteens

Cited by 2 publications

References 4 publications

Microwave Non-destructive Technique using a Double-ring Resonator for Classification of Transparent Flesh and Yellow gum Mangosteens

Microwave Non-destructive Technique using a Double-ring Resonator for Classification of Transparent Flesh and Yellow gum Mangosteens

A Design Method for a Microwave-Based Moisture Sensing System for Granular Materials in Arbitrarily Shaped Containers

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