Technology and design in electronic equipment, 2023, no. 1-2, pp. 50-59.
DOI: 10.15222/TKEA2023.1-2.50
UDC 629.5.064.5
Device for measuring signals of conveyor weights when loading a vessel with bulk cargo
(in Ukrainian)
Zavadsky V. A.1, Kharchenko R. Yu.1, Dranchuk S. M.2, Tsatsko V. I.2, Haur T. O.2

Ukraine, Odesa, 1National University "Odessa Maritime Academy", 2Odessa National Maritime University.

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.

Keywords: conveyor scales, frequency measurement, operation algorithm, sensor, weighing.

Received 11.03 2023
References
  1. Kalashnikov E.E., Koshevoy N.D., Cherepashchuk G.A. [Experimental study of a continuous weighing system]. Open Information and Computer Integrated Technologies, Kharkiv, KhAI, 2007, N3 (35), pp.196199. (Rus)
  2. Koshevoy N.D., Cherepashchuk G.A., Kalashnikov E.E. [Evaluation of the accuracy of continuous dosing of bulk materials]. Radioelektronni i kompiuterni systemy, 2008, N1 (28), pp. 143147. (Rus)
  3. Friden J. Sovremennyye datchiki. Spravochnik [Modern sensors. Directory]. Moscow, Tehnosfera, 2005, 592 p. (Rus)
  4. Mirskiy G. Y. Elektronnyye izmereniya. [Electronic measurements]. Moscow, Radio i svyaz, 1986, 440 p. (Rus)
  5. Deryabin V. [Voltage-frequency converters]. Chip News Inzhenernaya lektronika, 2004, 8, pp.1323. (Rus)
  6. Zavadsky V. A., Dranchuk S. M., Chaika A. V. Analog-frequency converter for ship equipment strain gauges, Materials of the 9th International Scientific and Practical Conference "SEEA-2019", Ukraine desa, 2019, . 5054. (Ukr)
  7. Dranchuk S. M., Zavadsky V. ., Kharchenko R. Yu. Monitoring processes in ship machines that change rapidly over time, with subsequent analysis of results. Electrotechnic and Computer Systems, 2019, no. 31(107), 118127. https://doi.org/10.15276/eltecs.31.107.2019.11 (Ukr)
  8. Zavadsky V. A., Kharchenko R. Yu., Dranchuk S. M., Tsatsko V. I. Device for investigating thermal stability of characteristics of voltage-to-frequiency converters. Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2021, no. 34, pp. 916. https://doi.org/10.15222/tkea2021.3-4.09 (Ukr)
  9. Dranchuk S. M., Zavadsky V. ., Kharchenko R. Yu. Monitoring processes in ship machines that change rapidly over time, with subsequent analysis of results. electrical and computer systems. ղV International Scientific and Technical Conference The Problems of Automated Electric Drive. Theory and Practice, 2019, Ukraine, Odesa. (Ukr)
  10. Zhukovitsky V.I. Osnovy teorii i printsipy postroyeniya avtomaticheskikh vesoizmeritel'nykh kompleksov v gornorudnoy promyshlennosti [Fundamentals of the theory and principles of construction of automatic weighing complexes in the mining industr]. Dnepropetrovsk, MON of Ukraine, NGU, 2014, 243 p. (Rus)
  11. Speed control sensor -1 (15 March 2023) (Rus)
  12. Ratkhor T.S. Tsifrovyye izmereniya. Metody i skhemotekhnika [Digital measurements. Methods and circuitry]. Moskow, Tehnosfera, 2004, 363 p. (Rus)
  13. Trampert V. Izmereniye i regulirovaniye s pomoshch'yu AVR mikrokontrollerov [Measurement and regulation with AVR microcontrollers. Kyiv, MK-Press, 2007, 208 p. (Rus)
  14. Yevstigneyev A.V. Mikrokontrollery AVR semeystv Tyny i Mega firmy Atmel [AVR microcontrollers of the Tyny and Mega families from Atmel]. Moskow, Dodeka-HHI, 2006, 589 p. (Rus)
  15. Revich Yu.V. Prakticheskoye programmirovaniye mikrokontrollerov Atmel AVR na yazyke assemblera [Practical programming of Atmel AVR microcontrollers in assembly language. SPb. BHV-Peterburg, 2008, 384 p. (Rus)
  16. Shi L., He J., Wu G. et al. Measuring system and method for auto-loading of bulk cargo. Proceedings Volume 7128, Seventh International Symposium on Instrumentation and Control Technology: Measurement Theory and Systems and Aeronautical Equipment, 2008, 71280Z. https://doi.org/10.1117/12.806622
  17. Blokus-Roszkowska A. Reliability analysis of the bulk cargo loading system including dependent components. AIP Conference Proceedings, 2016, vol. 1738, iss. 1, 440002. https://doi.org/10.1063/1.4952220
  18. Mansur V., Pershin V. F. Development of a method for weight continuous dosing of bulk materials and its implementation analysis. Proceedings of Higher Educational Institutions. chine Building, 2023, no.1 (754), pp. 3341. https://doi.org/10.18698/0536-1044-2023-1-33-41
  19. Shilin D. V., Shestov D. A., Ganin E. Improving the Accuracy of Weighing Bulk Materials in a Dispenser On-Stream Flow Meter with Two Strain Gauges. Vestnik MEI, 2019, no. 3(3), pp. 116123. https://doi.org/10.24160/1993-6982-2019-3-116-123 (Rus)