PNRPU Bulletin. Electrotechnics, Informational Technologies, Control Systems

The main advantages and shortcomings of modern networks Ethernet at their hardware realization in ACS of technological processes of various objects with the electrotechnical equipment are considered. The retrospective analysis of development of communication technologies of data transmission in networks at the field level, since the elementary onboard ACS and office local protocols to the open increased networks with standard speeds about 10 Gbps and more is carried out. On concrete examples it is shown that industrial Ethernet-networks have big benefits for the manufacturing and operational enterprises. Need of combination of the equipment and sensors of the lower level with the automated jobs of operators in uniform open management information network on the basis of universal transport protocols is proved. The possibilities of use for data transmission of fiber-optical communication channels on multimode optical cables are considered. It is shown that the choice of the protocol and speed of data exchange, the task of the Master-settings and Slave-devices, and also check of a condition of connections is carried out by means of the Web interface taking into account the given features of the protocol. Options of various data transmission networks of Ethernet-network of the Nizhny Novgorod subway, ACS by illumination of underground parking of shopping center, systems of scheduling and management of transformer substation, the sewer station and water reverse system with ventilator coolers are analyzed. Need of integration of all used electric equipment within universal protocols of Ethernet-network is proved. Results of design decisions and use of the equipment with a complete set in the standard network cases located directly at the operator are received. Universality of projects consists that all equipment of Ethernet networks (switchboards, routers, concentrators, locks, sockets, etc.) it is transferred to industrial execution and is capable to perceive the production loadings characteristic of various branches and technological processes.

This article describes the advantages of using multi-functional transformers of electro installations, including induction heating. In order to improve EMC conducted a comprehensive analysis of the magnetic semiconductor frequency converter for electrotechnology. Drives use today possible options for semiconductor frequency converters on the basis of the autonomous inverter voltage and current, as well as resonant inverters for electro-technological systems, including induction heating. These inverters can be performed on a component base thyristors and transistors. The possibility of application of amorphous steel in the magnetic multifunctional transformers to reduce losses in the frequency converter. The example provided by the developed simulation model of induction heating device, which is included in the multi-transformer, allows multiplication of the output voltage frequency of 2 to 4 and times, proved the feasibility of multi-functional transformers instead of matching transformers as electromagnetic compatibility of devices. Furthermore, by simulation confirmed the possibility of using a transformer as a multifunctional regulator output parameters electrotechnological installations comprising induction heating. In addition, all the advantages of galvanic decoupling networks are saved to all of the above benefits to converters with cascaded transformers. The practical significance of the research is to reduce electrical losses by reducing the hysteresis loss in the magnetic core of amorphous steel and switching losses in the semiconductor converter, and the possibility of adjusting the output parameters of the load during the induction heating.

In article approach to assessment of energy potential of thermal flows of system of water chilling of group of the compressors established in the shop on production and preparation of compressed air at the entity of JSC Perm Plant of Silicate Panels is considered. The heat carrier circulating in a cooling system has low-potential energy which at the moment isn't utilized. The simplified scheme of the existing system of water chilling of group of compressors on which places of possible thermal losses and installation of sensors for registration of temperature are shown is constructed. The technical implementation of an energy monitoring based on the device of remote telemetry and management of VIDA44M providing multichannel data collection, assignment of temporary tags to measurements, accumulating in the internal SD memory card in the file of the .csv format, access to the Internet for remote data collection is offered. For the controller the table with its key parameters and characteristics is constituted. The mathematical model of calculation of losses of heat energy in a cooling system of group of compressors considering results of monitoring of temperature of the heat carrier on an entrance and an exit in a cooling system and the set performance of recirculation pumps is constructed. Practical monitoring of low-potential thermal flows is carried out, temperature parameters of the environment, the heat carrier on entrance and output pipelines with use of the open software of OpenJEVis are provided. The conclusion is drawn on insignificant influence of ambient temperature on a difference of temperatures of the heat carrier in a cooling system, calculations of thermal losses are given. The table with key parameters of monitoring is constituted. Research has been completed under the PNRPU grant No.2016/PI-2 «Methodology development of monitoring and heat flow utilization as low potential company energy sources»

Approach to definition of system model of knowledge on the basis of formalization of the relationships of cause and effect defining data domain is offered. Necessary conditions for creation of the terminal formalized language as main instrument of extraction and representation of knowledge are found. It is shown that if the dialectic properties of the category cause relationships in the studied subject domain to define as the relation of the essence and existential properties of objects, then these relations, first of all, will define rules of syntax and further an axiom of semantics of subject-oriented meta language. In syntax of such formal meta language it is necessary to introduce the rule of superposition and associativity of all variety of relationships of cause and effect in an object and in interaction of objects in the studied subject domain. Nonlinearity of communications between objects will be defined in the case under consideration by the functors connecting various aspects of representation of subject domain of As.1, As.2,…. The example for definition of structure of meta language in subject domain - information activities, including is given: Natural meta language (EYa); Graphic-analytical meta language of the theory of categories (GAYa); meta language of programming (PYa), etc. Submission of the description of business processes which structure represents system of the formalized relationships of cause and effect is considered in connection with subject-oriented terminal metalanguages according to Chomsky's hierarchy. Are allocated and described in an attributive form of the business rule of formation of criteria of structuring content and extraction of the business processes given from models. In the course of extraction of knowledge of subject domain and its interpretation as the main tools the subject-oriented terminal metalanguages formed on the basis of a natural language proceeding from a context of subject domain are presented. Transition between levels of hierarchy is carried out at the expense of the description of subject domain in the form of metadata and set of storages of data. Process of extraction of data of information space for the intellectual analysis is presented according to levels of hierarchy of Chomsky.

In article the research of activity in detection threats and vulnerabilities is made. The consideration of statistics due to using the mobile operating systems is viewed in the last two quarters of 2015 and first two quarters of 2016. The emphasis is placed on researching the most commonly used mobile operating systems nowadays. The dynamics of declaration threats and vulnerabilities in past 5 years are analyzed. Similarly, the statistics of usage the instant messaging software (messengers) are considered in the world and in Russia. The most popular solutions are chosen. Also, the dynamics of viewed threats and vulnerabilities on mobile messaging programs are researched. Either mobile operating systems or mobile software for communicating are analyzed in public and private publication sources. For this purpose there are 9 sources are offered. The conclusion about software development is made. The dynamic of detecting vulnerabilities and threats is shown. There are dependencies between the dates of threats publications made by specialists in information security or hackers and the reaction of software developers. A comparison between the internal software in definite class is overviewed. The most secure OS and messengers are highlighted.

The urgent issue of the quality increasing of specialists in information security training has been formulated. The features of development of educational-laboratory facilities useful for specialists have been revealed. The problem of security information means against unauthorized access has been analyzed; the necessity of skilled specialists training has been stipulated. The competences of graduated students in universities, based in compliance with FSES (Federal State Educational Standard) in the course 10.03.01 «Information security» and 10.05.01 «Information security of automatized systems». The current article offers a brief description of functional opportunities of information security computer appliance «Crypton». The distinctive features of the cryptographic security data device «Crypton», which software allows solving certain routine problems, have been introduced. The structure of a cryptographic security data device «Crypton» according to its kitting-up has been stated. The process of development of the educational-laboratory stand for the study, construction and research of information security systems based on the cryptographic encryption systems has been described. The execution example of a laboratory work on the organization of cryptographic network, which is based on the he cryptographic security data device «Crypton» and contains the goal of the work, the order, theoretical introduction, practical work and control questions, has been given. Theoretical introduction contains such basic notions as cryptographic network, settings, network key, network table, network kit, organization of cryptographic network, files encryption for transmission in the cryptographic network, settings. The developed educational-laboratory stand allows to apply it in the training course of students studying «Information security», «Information security of automatized systems» as well as to use it for the realization of additional professional education programs and for advanced training of information security specialists.