Improving the Accuracy of Weighing Bulk Materials in a Dispenser On-Stream Flow Meter with Two Strain Gauges

Shilin, Denis; Shestov, Dmitry; Ganin, E. A.

doi:10.24160/1993-6982-2019-3-116-123

Cited by 2 publications

(1 citation statement)

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“…Анализ отечественной и зарубежной литературы, посвященной точным измерениям с использованием тензометрических силоизмерителей, показывает, что комплексный подход повышения качества измерений включает в себя аппаратные и программные решения, которые комбинируются в той или иной степени. Для компенсации смещения нуля (разбалансировки тензометрического моста) и устранения негативного влияния длины проводов между датчиком и измерительной системой применяются различные варианты подключения, каскад усилителей, дополнительное измерение напряжения возбуждения датчика и т. д. Существуют различные аппаратные решения для повышения точности измерений, например, использование дополнительного АЦП, измеряющего величину компенсации сигнала длины информационных проводов между измерительной системой и датчиком [5][6][7][8]. Такие решения при испытаниях сельскохозяйственной техники применяются редко, так как требуют существенного усложнения аппаратной и программной частей измерительного комплекса, дополнительных проводов между датчиком и измерительной системой и служат только для нейтрализации влияния электромагнитной составляющей помехи при измерении сигнала [9][10][11][12].…”

Section: обзор литературыunclassified

Digital Data Processing Methods for Estimating Tractive Force of Tractors

Fedorenko

Tarkivskiy

Mishurov

et al. 2021

Engineering Technologies and Systems

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Introduction. When carrying out an energy assessment of agricultural machines and traction tests of tractors, the most important indicator is the value of the tractive effort. The existing methods for determining the tractive effort of tractors imply the use of specialized measuring instruments, such as strain gauges and devices for processing and displaying information. The accuracy of determining the tractive effort is significantly influenced by the physical and mechanical properties of soil. To process the useful signal during the measurement of tractive effort, the data stream of the strain gauge sensor must be subjected to additional digital filtering taking into account the operating conditions of the agricultural unit. Materials and Methods. The functions of changing the tractive effort obtained on the K-744R2 tractor in various gears have been analyzed. An algorithm for digital processing of the signal of a strain gauge force meter based on a median filter has been developed that makes it possible to increase the measurement accuracy. The advantage of the proposed method is the ability to cut off sharp short-term impulse noise and sharp fluctuations in the amplitude of the measured value. Results. A method for determining the amount of tractive effort using median signal processing has been proposed. A device for determining the tractive effort during testing of agricultural tractors and units has been developed. The choice of the main components of the device for determining the magnitude of the tractive effort has been substantiated. As a result of the research, a device for measuring and digital processing of the signal of a force meter based on a microcontroller and specialized software for processing initial data in real time was designed and manufactured. Discussion and Conclusion. The developed method makes it possible to exclude the negative effect of impulse noise arising in the process of measuring the tractive effort of the tractor. The proposed device for measuring the tractive effort of tractors is compatible at the level of the exchange protocol with existing devices, has a high speed of operation in real time, multi-channel operation.

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Section: обзор литературыunclassified

Digital Data Processing Methods for Estimating Tractive Force of Tractors

Fedorenko

Tarkivskiy

Mishurov

et al. 2021

Engineering Technologies and Systems

View full text Add to dashboard Cite

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Device for measuring signals of conveyor weights when loading a vessel with bulk cargo

Zavadsky V. A.,

Kharchenko R. Yu.,

Dranchuk S. M.

et al. 2023

TKEA

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In the maritime industry, it is common to load a vessel with bulk materials using conveyor scales. To determine the amount of cargo loaded into the hold of the vessel, it is necessary to simultaneously measure both the current weight on the weighing platform and the speed of the conveyor belt. In addition, the loading process is affected by both the heterogeneity of the bulk material and the uneven movement of the conveyor belt. Therefore, it is necessary to simultaneously and synchronously measure these parameters. The purpose of this work was to develop a device and an algorithm for its operation, which will improve the accuracy of determining the mass of cargo when loading a vessel. Such a converter is located near the measuring sensor, and the frequency signal, the frequency of which is directly proportional to the output signal of the sensor along the line, is transmitted over a considerable distance without loss of information to the measuring device. The developed device for measuring the mass of bulk material using conveyor scales and the algorithm of its operation make it possible to simultaneously and continuously measure the current mass of the cargo and the speed of the conveyor belt, and, accordingly, the current mass of the cargo. The measurement accuracy was 0.25...0.5%. This device also allows you to get the characteristics of the weighing process to improve the mechanical conveyor designs of the scales. Testing of the developed device was carried out on conveyor scales when loading the ship with mineral fertilizers. Testing showed that the developed device for obtaining tensometric information and the algorithm of its operation make it possible to control the process of loading a ship with bulk materials using conveyor scales with the planned accuracy, which, in turn, allows it to be used in computer systems for monitoring ship loading. The developed device and the algorithm of its operation can improve the quality of measuring the mass of cargo and increase the accuracy of measurement, which is important from an economic point of view.

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Improving the Accuracy of Weighing Bulk Materials in a Dispenser On-Stream Flow Meter with Two Strain Gauges

Cited by 2 publications

References 0 publications

Digital Data Processing Methods for Estimating Tractive Force of Tractors

Digital Data Processing Methods for Estimating Tractive Force of Tractors

Device for measuring signals of conveyor weights when loading a vessel with bulk cargo

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