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Cited by 2 publications
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Objectives. The purpose of the work was to change the method of signal transmission containing metrological information from industrial time-pulse ultrasonic gas flow meter to a compu-ting device (CD). It was planned to expand the range of devices serving as gas flow calculators. A hardware-software complex (HSC) for automatic calibration / verification of ultrasonic flowmeters was to be developed. This HSC should work equally well on different operating systems. The information exchange between the CD and the flowmeter was to be carried out wirelessly.Method. The Wi-Fi Pro-tocol was used as a wireless Protocol. The energy-efficient ESP8266 controller was chosen as micro-controller to provide the functionality of Wi-Fi. The ESP8266 board acted as a Wi-Fi access point on the network to which CD was connected for data exchange. The ESP8266 microcontroller also served as a HTTP server. Exchange of metrological and other information was carried out by GET-requests. Given the need for continuous flow measurements and simultaneous communication between the user and the flow meter, requests to the server were transmitted using AJAX technology. The software part of the APK consisted of 3 programs: a program that measured the flow and transmitted the information further to the ESP8266 microcontroller, a server program recorded in ESP8266, providing a response to the requests of CD users, and the client program installed on the CD. The article discusses the key points of the HSC.Result. As a result of this work, the HSC was processed for calibration/verification of ultrasonic gas flow meters. For the first time this process for industrial flow meters was implemented using the ESP8266Wi-Fi controller as an access point. As a WU, it became possible to use any desktop or laptop computer or mobile device with a modern browser.Conclusion. The method proposed in the paper significantly simplified the data exchange between the VU and the flowmeter, reduced the cost of software development due to the common approach for different operating systems.
Objectives. The purpose of the work was to change the method of signal transmission containing metrological information from industrial time-pulse ultrasonic gas flow meter to a compu-ting device (CD). It was planned to expand the range of devices serving as gas flow calculators. A hardware-software complex (HSC) for automatic calibration / verification of ultrasonic flowmeters was to be developed. This HSC should work equally well on different operating systems. The information exchange between the CD and the flowmeter was to be carried out wirelessly.Method. The Wi-Fi Pro-tocol was used as a wireless Protocol. The energy-efficient ESP8266 controller was chosen as micro-controller to provide the functionality of Wi-Fi. The ESP8266 board acted as a Wi-Fi access point on the network to which CD was connected for data exchange. The ESP8266 microcontroller also served as a HTTP server. Exchange of metrological and other information was carried out by GET-requests. Given the need for continuous flow measurements and simultaneous communication between the user and the flow meter, requests to the server were transmitted using AJAX technology. The software part of the APK consisted of 3 programs: a program that measured the flow and transmitted the information further to the ESP8266 microcontroller, a server program recorded in ESP8266, providing a response to the requests of CD users, and the client program installed on the CD. The article discusses the key points of the HSC.Result. As a result of this work, the HSC was processed for calibration/verification of ultrasonic gas flow meters. For the first time this process for industrial flow meters was implemented using the ESP8266Wi-Fi controller as an access point. As a WU, it became possible to use any desktop or laptop computer or mobile device with a modern browser.Conclusion. The method proposed in the paper significantly simplified the data exchange between the VU and the flowmeter, reduced the cost of software development due to the common approach for different operating systems.
Properties and structures of Sodium silicate – sand mixtures components
Properties and structures of Sodium silicatesand mixtures componentsСтаттю присвячено питанням виявлення закономірностей структурування піщано-рідкоскляних сумішей, вивченню можливості прогнозування і зміни їх властивостей. Дослідження виконані з використанням кварцового піску та рідкого скла, а також кварцового піску, плакованого рідким склом. Встановлено, що сипкість піску не залежить від розмірів його частинок і найбільшу величину набуває при вмісті вільної води (вологи) менше 0,2% за масою, уявна щільність чистого і плакованого піску, ущільненого вібрацією, адитивна пайовому масовому вмісту в ньому нормованих фракцій піщинок і зростає від 1100 до 1900 кг/м 3 зі зменшенням середнього розміру його зерен від 0,81 до 0,16 мм і зі збільшенням модуля їх дрібноти від 20 до 60. За експериментальними даними розроблено аналітичну залежність між вмістом в рідкому склі силікату натрію і питомою щільністю рідкого скла, проведена оцінка впливу способу сушіння рідкого скла на залишковий вміст в ньому води. Показано, що в залежності від кількості рідкого скла в суміші, його фізичного стану до моменту початку структурування суміші і способу його затвердіння структура затверділого рідкого скла в структурованій піщано-рідкоскляній суміші може змінюватися від щільно-орієнтованої до пінно-дезорієнтованої, містити і не містити залишкову воду. Використання і облік отриманих даних дозволить не тільки скоротити витрати на розробку нових піщано-рідкоскляних сумішей, підвищити точність прогнозування їх властивостей, але і відкриває новий напрям в способах виготовлення з них ливарних форм і стрижнів.Ключові слова: рідке скло, пісок, вода, сушка, випаровування, випромінювання, пара Article is devoted to the questions of structuring regularities detection in sodium silicatesand mixtures and possibility of forecasting and changing their properties determination. Studies have been performed using quartz sand and sodium silicate solute, and also quartz sand placket with sodium silicate solute. It has been discovered that sand flow ability does not depend on the size of its particles, and the largest value acquires with the content of free water (moisture) less than 0.2% by weight. It has been established that apparent density of rare and placket sand, compacted by vibration, is additive to fractional mass content in it of particles normalized fractions and increases from 1100 to 1900 kg/m 3 with average size of its grains decreasing from 0.82 to 0.16 mm and with their fineness modulus increasing from 20 to 60. According to experimental data, analytical relationship between content of sodium silicate in sodium silicate solute and specific density of sodium silicate solute has been elaborated. Estimation of sodium silicate solute drying method influence on residual water content in it has been realized. It has been shown that depending on sodium silicate solute amount in mixture, its physical state up to the time of mixture structuring beginning and method of solidification, the structure of solidified sodium silicate solute in structured s...
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