Evaluation of Telecommunications Electromagnetic Compatibility with the Use of Three-Dimensional Modeling Technology

Transcription

1 Modern Appied Science; Vo. 10, No. 10; 2016 ISSN E-ISSN Pubished by Canadian Center of Science and Education Evauation of Teecommunications Eectromagnetic Compatibiity with the Use of Three-Dimensiona Modeing Technoogy Tatiana Sergeevna Abbasova 1, Nataya Petrovna Sidorova 1, Nataya Nikoaevna Teodorovich 1 & Eshan Maggeram Ogu Abbasov 1 1 The State-Funded Educationa Institution of Higher Education Moscow region University of Technoogy, Koroev city, Moscow region, Russia Correspondence: Tatiana Sergeevna Abbasova, The State-Funded Educationa Institution of Higher Professiona Education Moscow region University of Technoogy, Koroev city, Moscow region, Gagarina street, 42, Russia. Te: E-mai: abbasova_univer@mai.ru Received: March 5, 2016 Accepted: May 5, 2016 Onine Pubished: Juy 27, 2016 doi: /mas.v10n10p224 URL: The research is financed by (University of Technoogy). Abstract Three-dimensiona modeing is used as a new way of presenting information about the eectromagnetic compatibiity of teecommunications infrastructure equipment. We anayzed the probem of modeing of eectromagnetic noise waves equipment and communication channes of teecommunications monitoring systems. Conducted the anaysis of contro probems of teecommunications equipment eectromagnetic compatibiity. Described the rea conditions of instaing the eectronic equipment in computationa compexes. Using toos of 3D-modeing was formed cabe route, taking into account the suppression of noise waves, pacement of teecommunication devices and checking whether the threshod vaue of cabe susceptibiity for a options of its gasket between devices was transcended. It is proposed to study the behavior of eectromagnetic fieds in the cabe ines with shieding cabe, eectrostatic discharge, providing set of measures for eectromagnetic compatibiity, to convert created in a three-dimensiona environment mode in a speciaized settement package. The prospects of the use 4D-, 5D-, 6D-simuation for anaysis of the impementation of projects, reduction of operating and eectromagnetic compatibiity costs. Keywords: teecommunications infrastructure, eectromagnetic compatibiity, computer simuation 1. Introduction Repacing of outdated monitoring systems associated with the processes of integration of operators through the acquisition of sma teecommunications networks with diverse equipment as we as the emergence of new features of modern monitoring systems for interactive management. During the process of monitoring systems centraizing great importance has the quaity of data center functioning (Computing Compex (CC)). CC is characterized by a high degree of eectronic devices integration. Probems of improving the noise immunity and eectromagnetic compatibiity (EMC) of the equipment for the contro and monitoring of teecommunications networks are reevant. Anaysis of methods and means of evauating the EMN exposure on the CC equipment and teecommunications and communication channes [Moroz, Beuchenko, Samarov and Strenakuk, 2014; Artyushenko and Abbasova, 2014; Abbasova, Artuschenko and Samarov, 2014; Moroz, Poserenin, Stroiteev & Vasiyev, 2014] showed that the reiabe assessment of noise immunity requires the deveopment of new modes of EMN exposure evauation on the investigated objects. One of the promising directions for the deveopment of teecommunications systems and reated equipment of monitoring systems taking into account EMC, as we as the impementation of new teecommunications modues in the od modues, is the use of 3D-images to simuate the eectromagnetic noise (EMN). To contro EMN is conducted the anaysis of the information fow parameters of distortion in the conditions of EMN exposure. A distinctive feature of EMN impact on the CC equipment and teecommunication infrastructure is not the physica destruction of the components and communication channes, but the vioation of the ogica integrity of information, transmitted over these ines of communication and processed by computing compex 224

2 [Artyushenko and Abbasova, 2014; Artuschenko, Samarov, Goubev, Shchikanov & Kochetkov, 2015; Beuchenko, Zinoviev, Strenakuk & Vatutin, 2014; Vatutin, Semyonov & Shavrin, 2014]. Assessment of the stabiity of CC and teecommunication infrastructure when they exposed to eectromagnetic noise incudes determination of the parameters and subsequent assessment of the EMN impact on the performance of individua components and assembies of CC and the monitoring system in genera. Anaysis of the probems with theoretica and experimenta methods for the study of EMN exposure on the CC equipment and teecommunication infrastructure and methods of assessment the noise immunity reveaed the foowing patterns: 1) Existing numerica methods for cacuating the efficiency of screening and methods of cacuation of votages and currents that affect the CC equipment and teecommunication infrastructure require improvement and deveopment of engineering techniques on their basis that can be used on the CC design stages to determine the main parameters of infuence. 2) It is necessary to assess the impact of eectromagnetic noise on teecommunication equipment. It is impossibe to obtain reiabe data ony by anaytica methods due to the diversity of the principes of their construction and operation, as we as compexity of accounting the rea eectromagnetic reations with the surrounding space. 3) In the study of immunity of the CC equipment and teecommunications infrastructure shoud be taken into account existing methods and remedies. 2. Method As a method of modeing based on internationa and Russian experience offered the three-dimensiona modes of noise waves and network infrastructure, in which the noise waves are measured. Simuation tasks: preiminary assessment of EMN eves at any point of the CC or communication channe, as we as drawing a concusion about the possibiity of instaing a new system, the introduction of a new modue or wiring. Using these estimates in the monitoring system we may reduce the eve of EMN by generating the necessary contro signa that initiate specific actions on the use of the seected method of controing the operating noise. The rea simuated device or the transmission environment are three-dimensiona and, as a rue, not uniform in their eectric and magnetic properties. Therefore, to obtain reiabe resuts, it is often necessary to sove the three-dimensiona probems. On the exampe of three-dimensiona mode of the network infrastructure can be carried out detaied panning work for ensuring the EMC of teecommunication equipment. 2.1 Methods of modeing noise waves in eectrica communication channes of the teecommunication infrastructure Nowadays in high-speed teecommunications networks for production purposes, as we as in ground-based space infrastructure are used not ony optica fiber, but aso shieded and unshieded eectrica cabes. This is due to the fact that not on a sites of the network infrastructure is advisabe to use fiber optic cabes. For exampe, to connect the workstations of empoyees are used the communication channes with a bandwidth of not more than 100 Mbit / s, so as the transmission environment are used unshieded UTP cabes of 6th category (patch cords), shieded cabes STP of 7th category (communication channes before switchboards that combine subnets). Between switchboards and for connection to servers are used fiber optic cabes. The proposed accounting mode of EMN of eectric channes in teecommunication infrastructure is different from the we-known by the foowing criteria: - detection of devices, instruments, workstations, connected by cabe; - rendering appication for numerica simuation of the process, providing the anaysis and interpretation of the cacuation resuts (not ony the vaue of the noise waves themseves, but aso the cabe mounting parameters, taking into account the suppression of noise and ocation of teecommunication devices); - the possibiity of further work with computer mode in different modeing environments (For exampe, Compass 3D, 3D-Maxwe); - perception and interpretation of visua images by the deveoper of the cabe system. 2.2 Participant (Subject) Characteristics The study invoved researchers from the (Moscow State) University of Technoogy. Research interests: information and communication technoogies. 2.3 Toos of Anaytica, Geometric and Three-Dimensiona Modeing To deveop the three-dimensiona mode of noise waves in the cabes we shoud anayze the interaction of two wires in a magnetic fied using a magnetic fied theory [Buchhoz, 1961; Govorkov, 1968; Demirchyan, 1974]. 225

3 In accordance with the aw of tota current: 2 π r Hds = I 0, (1) where H is the magnetic fied around the wire through which a current I fows. At a distance L from the current-carrying wire, the magnetic fied wi be equa to: H = I/2π, [А/m]. (2) The magnetic fied generated around the current-carrying wire 1 incudes a wire 2, as shown in Figure 1. Figure 1. Three-dimensiona geometric interpretation of the magnetic couping between «working» chains of wires 2, 3, and noise waves source 1 The mechanism of magnetic couping that occurs between wires describe using Faraday's aw: dф di E ds = = L = U dt dt, (3) where E is the eectric fied intensity, [V/m]; U is the votage induced in the circuit formed by the wires 2 3; F = B d S. (4) where B is the magnetic fux crossing the oop area of the S, formed by wires 2 3; B = μn; μ is magnetic permeabiity of the environment. Define the votage induced in the circuit 2 3 (see Figure 1). Assuming that the ength of the wires 2 and 3 is equa to L. Using the resuts of [Demirchyan, 1974] and omitting intermediate cacuations, taking h = h, substituting in equation (4) the imits of integration, we can write: Then + + = μli F BLd = μl Hd = 2π df U = dt μl + = Lg 2π + di dt d μli + = Lg 2π = μlfi Lg +. (5), (6) 226

4 where di dt d = ( Icosωt) = ωi = 2πfI dt. (7) Anaysis of equation (6) shows that the induced votage in the circuit wi increase with the increasing of magnetic permeabiity μ, the chain ength of L, I amperage and frequency f. When you remove wires 2 3 from the source of noise waves, induced votage wi decrease. After simpe agebraic transformations, using the resuts of [Demirchyan, 1974], we can write that transitive attenuation or couping coefficient K c between the source of noise waves and «working» wires can be defined as: К U 2 Z22μLf + = = g с U1 ( Z + Z22+ jωl 2)( Z11+ Z21+ jωl 1), (8) where U 1 is the votage of power (noise waves) source of ine 1; U 2 is the votage induced in the «working» ine 2 because of magnetic couping; Z 11, Z 21 are the interna resistance of the votage source of noise waves and «working» ine respectivey; Z, Z 22 are the fu impedance of the noise source circuit and «working» ine respectivey; L 1, L 2 are the inductance of the noise source circuit and «working» ine respectivey. At ow and high frequencies, under certain assumptions, the equation (8) can be represented as: with ωl ind << 2Z К U 2 μlf + = = g с U1 4Z ; (9) with ωl ind >> 2Z, excuding phase К с U 2 ZμL + = = Lg 2 2 U 1 4π flind where L ind = L 1 = L 2 ; Z Z 1 Z 2., (10) Cacuation with the use of formuas (6)...(10) aows you to define the permissibe vaues in terms of reduction the magnetic couping between the "working" wire and the source of noise waves: - permissibe votage reduction of noise source or current in the circuit 1; - aowabe decreasing in ine ength L and (or) the distance between the wires h; - aowabe separation of circuits 1 and 2, so that for the equation (6) the foowing conditions were competed: >> and Lg[( + )/ ] Ln 1 = 0; (11) aowabe decreasing in the frequency of the transmitted signas; the possibiity of screening the «working» wire by magnetic shied with high permeabiity. CC that usuay ocated in a sma area is a consoidated computationa infrastructure with a high degree of eectronic hardware integration. According to the standard MIL-STD-461F, measurements of the radiation (intensities of eectric or magnetic fieds) are produced at a distance of 1 m from the tested technica device (TTD). At coser distances from the TTD caibration characteristics of antennas deteriorate, and accuratey assess the intensity of the radiated fied is not possibe. In rea conditions, under the instaation of eectronic faciities in the CC, the gap, separating this equipment, much ess than 1 m (often it is about 5 cm). At very short distances from the generating source fied can differ significanty from the measured and increase due to the neighboring eectronic and technica equipment. The instaed faciities wi be exposed to radiation more than cacuated. EMN simuation in CC is reduced to the aternate modeing of eectronic devices that work on some area (incuding devices of communication channes), and subsequent combining them into a system for the parameters determination of intensity of their joint fied at any point of the modeed CC segment. Aternate modeing of each eectronic device separatey consists of its provisiona repacement by an equivaent source, 227

5 depending on the vaues of the current and votage in the eectrica circuits. Preiminary repacement incudes the seection of the equivaent source parameters, based on the coincidence of the dynamics of the distribution of the fied intensity at a certain distance from the source. Further obtained equivaent source is represented as a 3D-mode in a software environment. 3. Resuts 3D-mode is constructed taking into account the geometrica dimensions of the rea eectronic device. Figure 2 shows the resut of EMN simuation of teecommunication unit of CC with three simuators of eectronic devices that generate eectromagnetic noise. EMN simuation resuts can be represented by 3D-modes at different times for the visua dispaying of the EMC performance. For the determination of cabe routes boundaries is conducted 3D modeing, which aows to specify the ocation of the boundaries of the cabe when cabing under EMC requirements. Figure 3 shows how, with the appying of various toos of software appication «Cabes and paits 3D» (speciaized appication for KOMPAS-3D), cabe route is formed, taking into account the pacement of devices (fittings, bocks) and checking whether the threshod vaue of cabe susceptibiity for a options of its gasket between devices was transcended. Three-dimensiona modeing can aso be used for the gasket of an shieded eectrica cabe, taking into account the impact of the eectromagnetic noise waves penetration through the screens. To study the behavior of eectromagnetic fieds in cabe routes (for exampe, during the processes of shieding cabe, eectrostatic discharge, ensuring a set of EMC measures) we can use created in KOMPAS-3D environment mode and move it to ANSYS Maxwe environment (eading software for 2D and 3D simuation of eectromagnetic fieds). Figure 2. The resut of the teecommunication faciities modeing with three simuators of eectronic devices Three-dimensiona modes of cabes and paits are based on the number and diameter of conductors, extending aong the routes; taking into account the fiets in the track turning points and automaticay cacuated the conditiona diameter of the cabe or pait branch. With the hep of three-dimensiona modeing of CC infrastructure the equipment can be distributed for the adjacent modues, depending on the purpose of using (business center, room for cabe entry, distribution point of horizonta subsystem, etc.) in accordance with ANSI/TIA/EIA-942 Teecommunications Infrastructure Standard for standard Data Centers (Figure 4). This wi improve the reiabiity and physica security of equipment. Thus, obtained spatia 3D-modes of assessment the EMN of eectronic devices in the CC modue, eectrica communication channes of teecommunications infrastructure, CC equipment distribution through modues. On the basis of the EMN evauation are deveoped protective measures, aimed at bringing the EMN in accordance with the requirements of the digita equipment. 228

6 Figure 3. The resuts of cabe routes modeing in the program KOMPAS-3D Figure 4. 3D-mode of the integrated computationa compex In the Resuts section, summarize the coected data and the anaysis performed on those data reevant to the discourse that is to foow. Report the data in sufficient detai to justify your concusions. Mention a reevant resuts, incuding those that run counter to expectation; be sure to incude sma effect sizes (or statisticay nonsignificant findings) when theory predicts arge (or statisticay significant) ones. Do not hide uncomfortabe resuts by omission. Do not incude individua scores or raw data with the exception, for exampe, of singe-case designs or iustrative exampes. In the spirit of data sharing (encouraged by APA and other professiona associations and sometimes required by funding agencies), raw data, incuding study characteristics and indivdua effect sizes used in a meta -anaysis, can be made avaiabe on suppementa onine archives. 4. Discussion For reduction the operationa costs, incuding costs for ensuring the EMC, it is advisabe to use three-dimensiona modes created in an software environment of N-dimensiona modeing (4D, 5D, 6D). 4D-mode associated with the caendar and the network schedue of the project impementation of the new modue (modernization of the existing modue) in teecommunications infrastructure. 5D-mode refects the visua detaiing of the project cost. 6D-mode visuay refects the situation at the faciity at any time, visua «panned vs. actua» progress of the project anaysis. After the competion of the impementation (modernization) process constructed modes can be used as a constanty actuaized data base containing information on the 229

7 channes of communication and teecommunication infrastructure equipment. 5. Concusions The proposed three-dimensiona mode of EMN accounting for equipment and communication channes of the teecommunications infrastructure is different from the we-known by foowing criteria: detection of devices, instruments, workstations, connected by cabe; rendering appication for numerica modeing of the process, providing the anaysis and interpretation of the resuts of cacuations (not ony the magnitude of noise itsef, but aso the cabe mounting options, taking into account the suppression of noise and ocation of teecommunication devices); the possibiity of further work with computer modes in different software environments (Compass 3D, 3D (2D) -Maxwe, 4D, 5D, 6D); perception and interpretation of visua images by the deveoper of the cabe system. Appeaing to the three-dimensiona modeing techniques provides a number of important practica advantages: improve the conditions of design and administration of CC cabe system. Acknowedgments The authors express their gratitude to Doctor of Technica Sciences, Professor of the University of Technoogy (Russia) Vadimir Mikhaiovich Artyushenko for reasonabe and principed criticism in conduction of the research and writing the scientific artice. References Abbasova, T. S., Artyushenko, V. M., & Samarov, K. L. (2014). Modern Methods of Processing of Video Information and Evauating the Quaity of Streaming Video Perception. Biosci., Biotech. Res. Asia, 11(Nov. Sp. Edn.), ISSN: Artuschenko, V. M., Samarov, K. L., Goubev, A. P., Shchikanov, A. Y., & Kochetkov, A. S. (2015). Modeing of Correated Two-Dimensiona Non-Gaussian Noises. Modern Appied Science, 9(8), ISSN ; E-ISSN Pubished by Canadian Center of Science and Education. Artyushenko, V. M., & Abbasova, T. S. (2014). Increasing Noise Immunity of Eectric Communication Channes in High-speed Teecommunication Systems. Biosci., Biotech. Res. Asia, 11(Nov. Sp. Edn.), ISSN: Beuchenko, I. M., Zinoviev, V. N, Strenakuk, Y. V., & Vatutin, V. M. (2014). Anaysis of the Decoder s Operation at Correcting Singe Errors Using the Tripe Code. Biosci., Biotech. Res. Asia, 11(Nov. Sp. Edn.), ISSN: Buchhoz, G. (1961). Cacuation of eectric and magnetic fieds. M.: Energia. p. 7. Demirchyan, K. S. (1974). Modeing of magnetic fieds. L.: Energy. p Govorkov, V. A. (1968). Eectric and magnetic fieds. M.: Energia. p Moroz A. P., Poserenin S. P., Stroiteev V. N., & Vasiyev N. A. (2014). The Anaisys of The On-ine Anaytica Processesing Methods For The Information Processing. Biosci., Biotech. Res. Asia, Vo. 11 (Nov. Sp. Edn.), ISSN: DOI: Moroz, A. P., Beuchenko, I. M., Samarov K. L. & Strenakuk Y. V. (2014). Singuarities of the Data Anti-jam in Teecommunication Systems Using the New Methods of Encryption. Biosci., Biotech. Res. Asia, 11(Nov. Sp. Edn.), ISSN: Vatutin V. M., Semyonov A. B., & Shavrin, S. S. (2014). The Computerized Simuation of the Neuro-fuzzy System for Recognizing the Parameters of the Geographicay Distributed Systems Equipment. Biosci., Biotech. Res. Asia, 11(Nov. Sp. Edn.), ISSN: Copyrights Copyright for this artice is retained by the author(s), with first pubication rights granted to the journa. This is an open-access artice distributed under the terms and conditions of the Creative Commons Attribution icense ( 0