FLAT SIEVE SEPARATORS WITH ANNULAR PNEUMATIC SEPARATION DUCT

The search for the optimal variant of the structural ar-rangement of flat-screen separators by centrifugal-air sepa-rators with annular pneumatic separation ducts is a promis-ing direction in the development of new equipment. This will significantly improve the technological performance of grain cleaning plants. It may be considered a promising direction for such research. Therefore, it is necessary to look for new options for the layout of grain cleaning ma-chines to increase their technological efficiency. Several variants of technological schemes for the operation of ex-isting flat-sieve separators with a centrifugal-air separator with an annular pneumatic separation ducts are proposed. The technological process of the modernized grain clean-ing plant based on the A1-BIS-100 plantis described. The main parameters of the gravity transporting device are de-termined; they fully ensure the operability of the modern-ized plant.

A Comparison of Presentation Mediums for the Study of Trust in Autonomous Vehicles

The purpose of this study is to compare presentation methods for use in the validation of the Trust in Selfdriving Vehicle Scale (TSDV), a questionnaire designed to assess user trust in self-driving cars. Previous studies have validated trust instruments using traditional videos wherein participants watch a scenario involving an automated system but there are strong concerns about external validity with this approach. We examined four presentation conditions: a flat screen monitor with a traditional video, a flat screen with a 2D 180 video, an Oculus Go VR headset with a 2D 180 video, and an Oculus Go with a 3D VR video. Participants watched eight video scenarios of a self-driving vehicle attempting a right-hand tum at a stop sign and rated their trust in the vehicle shown in the video after each scenario using the TSDV and rated telepresence for the viewing condition. We found a significant interaction between the mean TSDV scores for pedestrian collision and presentation condition. The TSDV mean in the Headset 2D 180 condition was significantly higher than the other three conditions. Additionally, when used to view the scenarios as 3D VR videos, the headset received significantly higher ratings of spatial presence compared to the condition using a flatscreen a 2D video; none of the remaining comparisons were statistically significant. Based on the results it is not recommended that the headset be used for short scenarios because the benefits do not outweigh the costs.

A Washable Silver-Printed Textile Electrode for ECG Monitoring

Electrocardiography (ECG) is one of the most widely used diagnostic methods to examine heart situations. This paper focuses on the development of a textile-based electrode and the study its ECG-detecting performance. We developed silver-printed textile electrodes via a the flat-screen printing of silver ink on knitted polyester fabric. The silver-printed PET fabric stayed reasonably conductive after washing and stretching, which makes it suitable for wearable applications. Moreover, the ECG measurements in static condition showed that the signal quality collected before and after washing was comparable with standard Ag/AgCl electrodes.

Deformation and Stress Analysis of the Electrostatic Separator Flat Screen in the SolidWorks Program

Рассмотрена проблема напряжённо-деформированного состояния решета электростатического сепаратора при ударной нагрузке с различными уровнями интенсивности импульса столкновения с применением метода конечных элементов. Проводилось изучение поперечного воздействия тела в виде точки массы или конечного тела на листовые структуры следующего типа: решето; решето, усиленное рёбрами; решето с повреждениями. Для решения обозначенной задачи использовался метод конечных элементов (FEM) в форме смещения. Этот метод был реализован в программном комплексе SolidWorks с приложением Simulation. Исследования были проведены для динамических нагрузок с материалами решёт: нержавеющая сталь и стеклотекстолит. Оценка результатов проводилась путём анализа эпюр напряжений и деформации модели. Проведённые расчёты показали, что учёт размеров ударного тела приводит к уменьшению значений деформации и эквивалентных напряжений. Для повышения эффективности системы очистки плоских решёт в электростатическом сепараторе в качестве материала решета можно применять как нержавеющую сталь, так и стеклотекстолит. The problem of stress-strain state of electrostatic separator screen at impact load with different levels of collision pulse intensity using finite element method is considered. The transverse effect of the body in the form of a point of mass or a final body on sheet structures of the following type was studied: screen, screen reinforced by ribs, screen with faults. To solve the designated problem, the finite element method (FEM) in the form of displacement was used. This method was implemented in the software complex SolidWorks with the Simulation application. Researches were conducted for dynamic loads with screen materials: stainless steel and fiber-glass plastic. Evaluation of the results was carried out by analyzing the stress and strain diagrams of the model. The conducted calculations have shown that taking into account the dimensions of the impact body leads to a decrease in deformation values and equivalent stresses. To increase the efficiency of the flat screen cleaning system in an electrostatic separator, both stainless steel and glass textile can be used as a screen material.