Design and Implementation of Elevator Monitoring Terminal

2014 ◽  
Vol 926-930 ◽  
pp. 1253-1256 ◽  
Author(s):  
Shi Hong Li ◽  
Hui Pu Hu ◽  
Yan Jin
Keyword(s):  
Effective Means ◽  
Computer Software ◽  
Operating Conditions ◽  
Monitoring And Control ◽  
Special Equipment ◽  
Security Issues ◽  
Government Supervision ◽  
Communication Module ◽  
Main Components ◽  
Network Server

Concerning the security issues in the running elevator and the fact that elevator monitoring is an effective means to ensure the safe running of the elevator, and the special equipment, users, manufacturers, and government supervision departments will need to master the operating conditions of the elevator. Therefore, combining with the main components, embedded microprocessor, RF communications modules, sensors and GPRS designed the remote elevator monitoring terminal, and complete real-time acquisition of the state data of the running elevator via GPRS communication module to send data to a remote network server. Monitoring terminal cooperates with the web server, database, and host computer software, then realize the remote monitoring and control of the elevator group. Practice has proved the feasibility, effectiveness and reliability of the design of the monitoring terminal.

scholarly journals Analysis and Comparative Assessment of Basic Tribological Properties of Selected Polymer Composites

Materials ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 75 ◽  
Author(s):  
Jerzy Jozwik ◽  
Krzysztof Dziedzic ◽  
Marcin Barszcz ◽  
Mykhaylo Pashechko
Keyword(s):  
Polymer Composites ◽  
Friction Force ◽  
Tribological Properties ◽  
Friction Pair ◽  
Computer Software ◽  
Operating Conditions ◽  
The Coefficient Of Friction ◽  
Cast Polyamide ◽  
Friction Path ◽  
Materials Used

Phenomena occurring in the contact area between two mating bodies are characterised by high complexity and variability. Comparisons are usually made between parameters such as the coefficient of friction, friction force, wear and temperature in relation to time and friction path. Their correct measurement enables the proper evaluation of tribological properties of materials used in the friction pair. This paper concerns the measurements of basic tribological parameters in the friction of selected polymer composites. Knowing the tribological properties of these composite materials, it will be possible to create proper operating conditions for kinematic friction pairs. This study investigated the coefficients of friction, friction force and temperatures of six polymer composites: cast polyamide PA6 G with oil, PA6 G with MoS2, polyoxymethylene POM with aluminium, polyethylene terephthalate PET with polytetrafluoroethylene PTFE, PTFE with bronze, and PTFE with graphite. The friction surface was also examined using an optical system and computer software for 3D measurements. As a result, PA6-G with oil was found to be the best choice as a composite material for thin sliding coatings.

Improved infrared temperature mapping of elastohydrodynamic contacts

2009 ◽  
Vol 223 (8) ◽  
pp. 1165-1177 ◽  
Author(s):  
T Reddyhoff ◽  
H A Spikes ◽  
A V Olver
Keyword(s):  
Effective Means ◽  
Field Measurements ◽  
Operating Conditions ◽  
Mapping Technique ◽  
Shear Stresses ◽  
Measured Temperature ◽  
Ir Camera ◽  
Full Field ◽  
Group I ◽  
Increased Sensitivity

An effective means of studying lubricant rheology within elastohydrodynamic contacts is by detailed mapping of the temperature of the fluid and the bounding surfaces within the lubricated contact area. In the current work, the experimental approach initially developed by Sanborn and Winer and then by Spikes et al., has been advanced to include a high specification infrared (IR) camera and microscope. Besides the instantaneous capture of full field measurements, this has the advantage of increased sensitivity and higher spatial resolution than previous systems used. The increased sensitivity enables a much larger range of testable operating conditions: namely lower loads, speeds, and reduced sliding. In addition, the range of test lubricants can be extended beyond high shearing traction fluids. These new possibilities have been used to investigate and compare the rheological properties of a range of lubricants: namely a group I and group II mineral oil, a polyalphaolephin (group IV), the traction fluid Santotrac 50, and 5P4E, a five-ring polyphenyl-ether. As expected, contact temperatures increased with lubricant refinement, for the mineral base oils tested. Using moving heat source theory, the measured temperature distributions were converted into maps showing rate of heat input into each surface, from which shear stresses were calculated. The technique could therefore be validated by integrating these shear stress maps, and comparing them with traction values obtained by direct measurement. Generally there was good agreement between the two approaches, with the only significant differences occurring for 5P4E, where the traction that was deduced from the temperature over-predicted the traction by roughly 15 per cent. Of the lubricants tested, Santotrac 50 showed the highest average traction over the contact; however, 5P4E showed the highest maximum traction. This observation is only possible using the IR mapping technique, and is obscured when measuring the traction directly. Both techniques showed the effect of shear heating causing a reduction in traction.

Reverse Engineering Using Close Range Photogrammetry for Additive Manufactured Reproduction of Egyptian Artefacts and Other Objets d’art

2014 ◽  
Author(s):  
John Kaufman ◽  
Allan E. W. Rennie ◽  
Morag Clement
Keyword(s):  
Laser Scanning ◽  
Computer Software ◽  
Operating Conditions ◽  
Digital Data ◽  
Image Capture ◽  
Processing Power ◽  
Single Lens ◽  
Close Range ◽  
Geometric Representations ◽  
Objective Being

Photogrammetry has been in use for over one hundred and fifty years. This research considers how digital image capture using a medium range Nikon Digital SLR camera, can be transformed into 3D virtual spatial images, and together with additive manufacturing (AM) technology, geometric representations of the original artefact can be fabricated. The research has focused on the use of photogrammetry as opposed to laser scanning (LS), investigating the shift from LS use to a Digital Single Lens Reflex (DSLR) camera exclusively. The basic photogrammetry equipment required is discussed, with the main objective being simplicity of execution for eventual realisation of physical products. As the processing power of computers has increased and become widely available, at affordable prices, software programs have improved, so it is now possible to digitally combine multi-view photographs, taken from 360°, into 3D virtual representational images. This has now led to the possibility of 3D images being created without LS intervention. Two methods of digital data capture are employed and discussed, in acquiring up to 130 digital data images, taken from different angles using the DSLR camera together with the specific operating conditions in which to photograph the objects. Three case studies are documented, the first, a modern clay sculpture, whilst the other two are 3000 year old Egyptian clay artefacts and the objects were recreated using AM technology. It has been shown that with the use of a standard DSLR camera and computer software, 2D images can be converted into 3D virtual video replicas as well as solid, geometric representation of the originals.

Neurotechnology as a factor of the educational process transformation

2021 ◽  
pp. 98-13
Author(s):  
Л.Д. Александрова ◽  
Р.А. Богачева ◽  
Т.А. Чекалина ◽  
М.В. Максимова ◽  
В.И. Тимонина
Keyword(s):  
Effective Means ◽  
Individual Characteristics ◽  
Educational Process ◽  
Special Equipment ◽  
Research Areas ◽  
Long Time ◽  
Mental Abilities ◽  
The Individual ◽  
And Control

Изучение возможностей мозга для повышения качества обучения находится в центре внимания педагогической науки уже много лет. Развитие цифровизации позволило использовать в исследованиях специальное оборудование, с помощью которого можно оценивать и контролировать работу мозга, развивать умственные способности, познавательные функции и т. п. Нейротехнологии стали эффективным средством, позволяющим трансформировать образовательный процесс за счет подбора специального учебного контента с учетом индивидуальных особенностей обучающихся. Вместе с тем возникает необходимость в конкретизации терминологии и определении актуальных направлений исследований в данной области. For a long time, the study of the brain capabilities for the improvement of the quality of education has been an urgent direction in pedagogical science. Due to the development of digitalization, new areas of research have emerged related to the use of special equipment that makes it possible to assess and control brainwork, develop mental abilities, cognitive functions, etc. One of them is neurotechnology, which is an effective means of transforming the educational process: it offers educational content based on the individual characteristics of students. Thus, a need to concretize the terminology and determine the current research areas arises. The article aims to attempt to fill this gap with the help of a representative analysis of publications on neurotechnologies, as well as the essence of neuroeducation.

Incorporating Neural Network Material Models Within Finite Element Analysis for Rheological Behavior Prediction

2006 ◽  
Vol 129 (1) ◽  
pp. 58-65 ◽  
Author(s):  
B. Scott Kessler ◽  
A. Sherif El-Gizawy ◽  
Douglas E. Smith
Keyword(s):  
Finite Element ◽  
Effective Means ◽  
Element Model ◽  
Operating Conditions ◽  
Behavior Prediction ◽  
Element Analysis ◽  
Material Models ◽  
Rheological Models ◽  
Wide Range ◽  
Novel Method

The accuracy of a finite element model for design and analysis of a metal forging operation is limited by the incorporated material model’s ability to predict deformation behavior over a wide range of operating conditions. Current rheological models prove deficient in several respects due to the difficulty in establishing complicated relations between many parameters. More recently, artificial neural networks (ANN) have been suggested as an effective means to overcome these difficulties. To this end, a robust ANN with the ability to determine flow stresses based on strain, strain rate, and temperature is developed and linked with finite element code. Comparisons of this novel method with conventional means are carried out to demonstrate the advantages of this approach.

scholarly journals A Characteristic of Selected Properties of Vulcanised Rubber Elements Used on the “Izabel” Inland Vessel

2018 ◽  
Vol 1 (1) ◽  
pp. 675-679
Author(s):  
Patrycja Pawłowska ◽  
Zbigniew Matuszak ◽  
Katarzyna Sosik ◽  
Mária Chovancová
Keyword(s):  
Hardness Test ◽  
Weather Conditions ◽  
General Concept ◽  
Operating Conditions ◽  
Shore Hardness ◽  
Final Phase ◽  
High Elasticity ◽  
Static And Dynamic Loads ◽  
Main Components ◽  
Elastic Deformability

Abstract Vulcanised rubber as a complex system is made from the basic component being virgin rubber and various components amounting to 10-15 per cent or even more. The material gains its most valuable properties in the final phase of processing i.e. vulcanisation. In mechanical as well as automotive engineering it is important for vulcanised rubber to be resistant to grease, oil and fuel in high operating temperatures. Being one of the very valuable isolation materials, vulcanised rubber is also characterised by dielectric and elastic properties as well as distinguished resistance to operating conditions (high/low temperature, weather conditions). All the above mentioned applications of vulcanised rubbers are also found in the shipyard industry. Their use is also very much predicated on the properties such as: ability to attenuate mechanical vibrations, high elasticity, considerable elastic deformability under static and dynamic loads, low permeability of water and gas, resistance to various chemicals, and other. The purpose of this article was to determine the hardness of vulcanised rubber samples obtained from various places on the “Izabel” inland barge. The scope of the study covered sampling and preparing the samples for testing (i.e. cleaning and degreasing the samples). Then, the hardness of the samples was measured using the Shore hardness test. The first part of the article presents the general concept of vulcanised rubber, its main components, properties, applications, and ageing. The second part focuses on the research scope and measuring the hardness of vulcanised rubber samples obtained from the “Izabel” inland barge.

Features of equipping the divisions of FPS GPS EMERCOM of Russia with fire fighting equipment and rescue tools for work in the Arctic zone of the russian federation

2020 ◽  
pp. 79-83
Author(s):  
Евгений Владимирович Павлов ◽  
Иван Вячеславович Нестеров ◽  
Александр Иванович Пичугин ◽  
Кирилл Эдуардович Архиреев ◽  
Владимир Иванович Логинов ◽  
...  
Keyword(s):  
Information And Communication Technologies ◽  
Russian Federation ◽  
Life Support ◽  
Negative Impact ◽  
Technical Support ◽  
Operating Conditions ◽  
The Arctic ◽  
Arctic Zone ◽  
Special Equipment ◽  
The Russian Federation

Сформулированы общие требования к пожарной технике и оборудованию, аварийно-спасательным средствам, предназначенным для эксплуатации в Арктической зоне Российской Федерации (АЗРФ). Рассмотрены основные факторы, связанные с использованием пожарной техники в условиях экстремально отрицательных температур и затрудняющие тушение пожаров, проведение аварийно-спасательных работ. Основным фактором является неприспособленность к работе при значениях температуры окружающей среды ниже минус 40 °С имеющейся пожарной техники или ее отсутствие. Этот фактор определяет и другие негативные факторы, снижающие эффективность пожарной техники или делающие невозможным ее применение. Указаны основные приоритеты развития системы материально-технического обеспечения сил и средств ФПС ГПС МЧС России в АЗРФ. The main directions of FPS GPS divisions development in the Arctic zone of the Russian Federation (AZRF) are formulated. The paper draws attention to the problem of equipping fire and rescue units operating in the AZRF with special equipment adapted to extreme operating conditions. A number of factors have a negative impact on providing fire and rescue units with the necessary equipment. They include an insufficient number of equipment types designed specifically for operation in AZRF conditions, the lack of a regulatory framework containing the requirements to certain types of fire and rescue equipment of HL climatic performance. In addition, the authorizing departmental documents, defining the order of material and technical support of divisions of FPS GPS EMERCOM of Russia, do not consider the features of material and technical support of divisions in AZRF. There are formulated the following main development priorities for the system of material and technical support of forces and means of the FPS GPS EMERCOM of Russia in AZRF: development and implementation of innovative models of multifunctional mobile fire and rescue vehicles and equipment, improvement of the system of maintenance and repair for fire and rescue equipment and vehicles in the Arctic zone. In addition, it is necessary to build, reconstruct and equip the infrastructure objects for divisions of FPS GPS EMERCOM of Russia including the provision with modern information and communication technologies and life-support systems that allow to monitor the situation effectively and, if necessary, to warn the population.

A Virtual Model for Aluminum Hot Forging Using an Artificial Neural Network Material Model Within Finite Element Analysis

2005 ◽  
Author(s):  
B. Scott Kessler ◽  
A. Sherif El-Gizawy
Keyword(s):  
Finite Element ◽  
Effective Means ◽  
Hot Forging ◽  
Material Model ◽  
Element Model ◽  
Operating Conditions ◽  
Element Analysis ◽  
Preliminary Model ◽  
Wide Range ◽  
Artificial Neural

The accuracy of a finite element model for design and analysis of a metal forging operation is limited by the incorporated material model’s ability to predict deformation behavior over a wide range of operating conditions. Current rheological models prove deficient in several respects due to the difficulty in establishing complicated relations between many parameters. More recently, artificial neural networks (ANN) have been suggested as an effective means to overcome these difficulties. In the present work, a previously developed ANN with the ability to determine flow stresses based on strain, strain rate, and temperature is incorporated with finite element code. Utilizing this linked approach, a preliminary model for forging an aluminum wheel is developed. This novel method, along with a conventional approach, is then measured against the forging process as it is currently performed in actual production.

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