Studying the electrical characteristics of grain under vibration action

Ivashina, Alexander; Adoshev, Andrey; Zhdanov, Valery; Shemyakin, V. N.

doi:10.22616/erdev2019.18.n327

Cited by 2 publications

(6 citation statements)

References 5 publications

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“…The experimental results described in [12] have shown that the value of the dielectric permeability (DP) of the grain mass (GM) in the vibro-fluidized layer decreases, starting with some values of the vibration amplitude with the growth of the latter.…”

Section: Methodsmentioning

confidence: 99%

“…The electrical characteristics of grains and seeds are studied by many authors [1][2][3][4][5][6][7][8][9][10][11][12]. The issues of the influence of the vibration frequency on the reach-hrough conductivity of the vibro-fluidized grain mass have not been investigated.…”

Section: Introductionmentioning

confidence: 99%

“…One of the main disadvantages of flow devices with gravity outflow of bulk materials is the zeroing of the moisture indicator during short interruptions or significant inhomogeneityin the flow of bulk materials, which leads to malfunctions of automatic moisture controllers and complicates the work of the operating personnel of grain dryers [12]. The devices can be used to measure moisture during drying in carousel and shaft type dryers and others when harvesting and processing grain crops at enterprises of the agro-industrial complex and of the food industry.…”

Section: Introductionmentioning

confidence: 99%

“…Sample preparation devices, spilled with a power sealing arrangement, are divided into discontinuous devices, screw and roller devices [10][11][12]. The disadvantages of such a device include DOI:10.22616/ERDev.2020.19.TF267 the need to use a rotating electric drive.…”

Section: Introductionmentioning

confidence: 99%

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Method for measuring moisture of grain mass under vibration

Ivashina

Adoshev

Антонов

et al. 2020

19th International Scientific Conference Engineering for Rural Development Proceedings

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A detailed analysis of the end-to-end conductivity was carried out using experimental data from the measurement scheme, presented in the article. The oscillograms of changes in the time of the specific active conductivity of wheat grains of the given moisture at a given amplitude of vibration (on a direct current) were removed. Experiments have shown, that specific active conductivity varies from a value corresponding to a lack of vibration to a corresponding value, subject to vibration, i.e., almost more than 3 times. The minimum value of end-to-end conductivity when exposed to vibration, as shown by the experimental test, is almost an order of magnitude less than its average value. The decrease in the value of end-to-end conductivity relative to its average value is manifested in the intervals of time corresponding to the moments of movement of the sensor downwards, that is, in the direction of acceleration of gravity, under the influence of a vibrator. The work offers a way to measure the moisture of the grain mass and the device for its implementation. A distinctive feature of the developed method is that the controlled grain mass is filled in the cavity of the capacitive sensor and subjected to vertical vibration. The registration of dielectric permeability (moisture) is made at intervals of time corresponding to the minimum value of end-to-end conductivity. The proposed method makes it possible to significantly increase the accuracy of measuring the moisture content of the grain mass. This is especially important in conditions of high moisture.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Method for measuring moisture of grain mass under vibration

Ivashina

Adoshev

Антонов

et al. 2020

19th International Scientific Conference Engineering for Rural Development Proceedings

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show abstract

“…The basic error of the vibration flow moisture meter [8][9][10] obtained as a result of the calculation should not exceed the permissible value. Otherwise, the graduation of the moisture meter is repeated.…”

Section: Table 2 Scheme For Calculating Auxiliary Values Of the Regression Equationmentioning

confidence: 99%

Graduation technique for vibration flow device for grain mass moisture control

et al. 2021

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The article shows that sampling of grain while controlling the moisture content is carried out in accordance with the current recommendations and standards. The mass of a sample should be sufficient to form 10-15 samples with uniformly distributed moisture values with an interval of no more than 3-4% in the measurement range of a vibration-flow moisture meter. Determination of grain moisture is carried out by the thermogravimetric method using a drying oven as a standard in the following sequence. Measurements with a moisture meter are taken at least three times. For the final measurement result, the average value α of the moisture meter readings from a series of successive measurements is taken. The range in a series of measurements should not exceed 0.05α; otherwise the measurements are repeated. The moisture measurement results and the corresponding readings of the device are entered in the appropriate table. When constructing graduation curves, a correlation-regression analysis of the measurement results is carried out, which is as follows. A correlation field is constructed - a graphical representation of the relationship between the moisture values of the material Wi and the readings of the moisture meter αi. If the analysis is performed correctly, the theoretical regression line plotted on the correlation field should be located as close as possible to the experimental measurement points. The basic error of the vibration-flow moisture meter, obtained as a result of the calculation, should not exceed the permissible value. Otherwise, the graduation of the moisture meter is repeated.

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Studying the electrical characteristics of grain under vibration action

Cited by 2 publications

References 5 publications

Method for measuring moisture of grain mass under vibration

Method for measuring moisture of grain mass under vibration

Graduation technique for vibration flow device for grain mass moisture control

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