Academic literature on the topic 'IEEE1687'

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Journal articles on the topic "IEEE1687"

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Li, Zhi, Bin Yi Qin, Cong Hu, and Zhen Lin Zhong. "Research on Synchronization Technology Based on IEEE1588 Protocol." Applied Mechanics and Materials 310 (February 2013): 634–39. http://dx.doi.org/10.4028/www.scientific.net/amm.310.634.

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With the rapid development of network technology, Distributed test system is widely applied in the test field, and clock synchronization in the system is the key issues in distributed test system. Meanwhile, with the development of testing techniques, distributed test has higher requirement for precision of the synchronization. Since the IEEE1588 protocol promulgated, it provides a feasible way to realize the requirement. This paper firstly analyzes the basic principle of IEEE1588, and then puts forward a scheme to implement IEEE1588 by using hardware timestamp. Finally, optimizes the method of PTP (precision time protocol) synchronization adjustment and builds experimental platform to verify the effect of optimization. Experiments prove that the scheme is feasible, and the clock synchronization precision can achieve a level of sub-microsecond.
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Park, Sung-Won, In-Sung Kim, and Dongik Lee. "Implementation of IEEE1588 for Clock Synchronization." Journal of Korean Institute of Communications and Information Sciences 39B, no. 2 (February 28, 2014): 123–32. http://dx.doi.org/10.7840/kics.2014.39b.2.123.

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Ma, Qi Yan, and Li Jun Qin. "Application Schemes of IEEE1588 Protocol in Communication Network of Electric Power Dispatching." Advanced Materials Research 433-440 (January 2012): 3669–76. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.3669.

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By reviewing the application status of traditional clock synchronization methods and architectures under different protocols in a comparative way in China, this paper analyzes the application of IEEE1588 protocol in power dispatching automation and puts forward new clock synchronizing schemes in electricity dispatching communication network based on IEEE1588 protocol (or Std. IEC61588) and proposes some futuristic research fields referring to IEEE1588 protocol in power dispatching automation. New schemes have better clock synchronizing precision, featuring in low implementation cost compared with other clock synchronization schemes. At the same time, it will effectively lower system resource requirements, relieve current excessive reliance on GPS clock source, mitigate data fetching and exchange congestion. It will shed light on building domestic power dispatching networks under the PTP protocol as well as constructing smarter power grid both at home and abroad in the future. This work is supported by North China Electric Power University, Sifang & Huaneng Power System Control Co., Ltd and Zhuhai Power Electricity Supply Company in SMART SYNCHRONOUS DEVICE RESEARCH BASED ON IEC61850 AND IEEE 1588 project, which involves a wholesale research in clock synchronization of power dispatching communication networks and developed China’s first set of smart clock synchronization devices, including the clock synchronization handler CSE6000 (briefly introduced in part v) and corresponding kilomega Ethernet switch. Our research results have reached the advanced level at home, and we are applying for a patent protection accordingly.
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Liu, Xiao, and Changjun Li. "Research Based on IEEE1588 Frequency Compensation Algorithm." IOP Conference Series: Materials Science and Engineering 677 (December 10, 2019): 032042. http://dx.doi.org/10.1088/1757-899x/677/3/032042.

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Liu, Bao Hu, Xue Zhang, and Wen Gang Chen. "Design of Can Bus Clock Synchronous System Based on STM32." Applied Mechanics and Materials 130-134 (October 2011): 738–40. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.738.

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IEEE1588 Precision Clock Protocol is applied to Can Bus distributed system platform constructed of STM 32 chips to accomplish the clock synchronous system between primary and subsidiary base stations, thus ensuring the clock synchronization with the precision of millisecond.
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Jeon, Jong-Mok, Dong-Gil Kim, Eun-Ro Kim, and Dong-Ik Lee. "Implementing IEEE1588 based Clock Synchronization for Networked Embedded System." IEMEK Journal of Embedded Systems and Applications 9, no. 1 (February 28, 2014): 33–41. http://dx.doi.org/10.14372/iemek.2014.9.1.33.

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Li, Ming, Zhi Qiang Wang, Guan Hui Liang, and Qing Gao. "Research of FPGA Based LXI Bus Clock Synchronization Technology." Applied Mechanics and Materials 313-314 (March 2013): 1371–74. http://dx.doi.org/10.4028/www.scientific.net/amm.313-314.1371.

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As to the insufficient of difficulties to achieve sub-microsecond accuracy in full software implementation of LXI bus synchronization. Studies the LXI bus synchronization triggering and advances, the design program of FPGA-based hardware-assisted to achieve IEEE1588. Which lays a good foundation for the design and implementation of the Class A and Class B instruments.
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Liu, Zhuo Fu, Zhong Ming Luo, Xin Wang, Wei Jiang, and Ruo Chen Jia. "Design and Implementation of Supporting IEEE1588 Industrial Ethernet Switch." Advanced Materials Research 765-767 (September 2013): 2586–89. http://dx.doi.org/10.4028/www.scientific.net/amr.765-767.2586.

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Aiming at the reliability of real-time industrial Ethernet, the L2 Industrial Ethernet switch is designed using VSC7429. With the respect of real-time capacity, it is based on the IEEE1588 standard by adding logic modules between MAC £ ̈Medium Access Control£© layer and PHY £ ̈physical£© layer to process the clock stamp. It eliminates the delay and uncertainty of the protocol stack and provides the accurate synchronous clock. In terms of reliability, dual hot backup power supplies were applied. Owing to the harsh environment of the industrial field, the EMC (Electro Magnetic Compatibility) protection design was considered. The performance of the switch was tested including packet loss rate and bit error rate. Experimental results showed it met the requirement of industrial Ethernet standard.
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Qin, Li Jun, and Ning Hui Guo. "A New Smart Substation Structure with Single Net and Single Equipment." Applied Mechanics and Materials 392 (September 2013): 572–75. http://dx.doi.org/10.4028/www.scientific.net/amm.392.572.

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a new generation of single equipment and single network structure of intelligent substation is proposed in this paper on the basis of the current three layers two network smart substation, the key technology of this kind of new intelligent substation needs are also proposed in this paper, such as port mirroring, VLANs and IEEE1588. Examples of key technologies are presented,using industrial Ethernet switch, providing reference for engineering applications of new smart substation .
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Feng, Shuwei, Meiyi Hou, Guofang Zhu, Qi Qi, Richang Xian, Tao Jiang, Ying Zhai, and Ming Sun. "IEEE1588 Time Synchronizing System Multiplexing Industrial Ethernet of Distribution Automation." Journal of Power and Energy Engineering 02, no. 04 (2014): 252–58. http://dx.doi.org/10.4236/jpee.2014.24036.

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Dissertations / Theses on the topic "IEEE1687"

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Englund, Johan. "Determining suitability of the IEEE1609 standard for PRT systems." Thesis, Högskolan i Gävle, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-8115.

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Personal Rapid Transit systems have high demands on its reliability and security. Many of the fundamental functions needed by a PRT system can be provided by a wireless radio communication link. The goal of this thesis is to determine if the emerging radio standard for intelligent transportation systems is suitable for providing some of the needed functions. The emphasis of this work is to understand the features of the standard that are important for a PRT system and to verify them with simulation.
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Corry, Diarmuid. "IEEE1588 – A solution for synchronization of networked data acquisition systems?" International Foundation for Telemetering, 2006. http://hdl.handle.net/10150/604243.

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ITC/USA 2006 Conference Proceedings / The Forty-Second Annual International Telemetering Conference and Technical Exhibition / October 23-26, 2006 / Town and Country Resort & Convention Center, San Diego, California
One of the problems for manufacturers and users of flight test data acquisition equipment, is to guarantee synchronization between multiple units acquiring data on the vehicle. Past solutions have involved proprietary interconnects and multiple wire installations increasing weight and complexity and reducing inter-operation of units. This problem has become particularly important given the trend towards commercial busses, especially Ethernet, as a system interconnect. The IEEE1588 standard offers a way to transmitting time accurately over Ethernet. This paper discusses the standard, how it might be implemented, and examines the issues involved in adopting this standard for flight test data acquisition. A particular implementation that results in a synchronized four-wire Ethernet based distributed data acquisition system is discussed in section 3.
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Nascimento, Fernando Biazi. "Sincronização temporal para dispositivos com conexão sem fio de baixo consumo de energia." Universidade Presbiteriana Mackenzie, 2014. http://tede.mackenzie.br/jspui/handle/tede/1456.

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Made available in DSpace on 2016-03-15T19:37:54Z (GMT). No. of bitstreams: 1 Fernando Biazi Nascimento.pdf: 3885211 bytes, checksum: 52d266afc3ffddce2e0abc915e2471a1 (MD5) Previous issue date: 2014-10-23
Fundo Mackenzie de Pesquisa
The present work consists of an implementation of time distribution protocol based on PTP disclosed in the IEC 61588:2009 / IEEE 1588-2008 standard to be used in low-power wireless devices. The distribution of time is important to determine the order of occurrence of events marked in distinct counts that can then be related. And the problems of lack of synchronicity are evident in circumstances ranging from the study of historical facts up to the investigation of intruders in modern equipments connected to the internet. The work included development of a completely new software for the microcontroller MSP430F2274TM using the CC2480TMnetwork controller. The implementation of the protocol considers one of the mechanisms described by the standard and remains very close to it, not fully conformant mainly because of lack of resources on the used device, but the expected behavior was kept. The devices synchronize the time between them and sintonize their time counting, in a way to reduce, as much as possible, the adjustments of further synchronizations.
O presente trabalho consiste em uma implementação de protocolo de distribuição de tempo baseado no PTP, definido na norma IEC 61588:2009/IEEE 1588-2008 a ser utilizado em dispositivos sem fio de baixo consumo de energia. A distribuição de tempo é importante para determinar a ordem de ocorrência de eventos marcados em contagens distintas que podem então ser relacionadas. E os problemas de falta de sincronia são evidentes em circunstâncias que vão de estudo de fatos históricos até a verificação de intrusos em equipamentos modernos conectados à internet. O trabalho contou com desenvolvimento de um software completamente novo para o micro-controlador MSP430F2274TM utilizando o controlador de rede CC2480TM. A implementação do protocolo considera um dos mecanismos apresentados pela norma e ficou muito próxima, não atendendo-a plenamente principalmente por falta de recursos no dispositivo utilizado, mas manteve o comportamento previsto. Os dispositivos sincronizam os tempos entre eles e sintonizam suas contagens de tempo, de forma a reduzir, tanto quanto possível, o ajuste de futuras sincronizações.
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Gedda, Emil, and Anders Eriksson. "Practical analysis of the Precision Time Protocol under different types of system load." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-208493.

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The existence of distributed real-time systems calls for protocols for high accuracy time synchronization between devices. One such protocol, the Precision Time Protocol (PTP) reaches sub microsecond synchronization precision. PTP can be implemented both in hardware and software. This study aimed to analyze how system stress could affect the accuracy and precision of software implemented PTP between two devices. This was done using two Intel Galileo Generation 2 running Linux systems. Software was used to simulate CPU, I/O, network, and OS usage. Data was extracted from software logs and summarized in charts and then analyzed. The results showed that PTP synchronization accuracy and precision does suffer under certain types of system load, most notably under heavy I/O load. However the results might not be applicable to real-world scenario due to limitations in hardware and the synthetic stress tests do not correspond to real-world usage. Further research is required to analyze why and how different types of system load affects PTPs accuracy and precision.
Förekomsten av distribuerade realtidssystem kräver protokoll för noggrann tidssynkronisering mellan enheter. Ett sådant protokoll, Precision Time Protocol (PTP), kan uppnå en precision på under mikrosekunden under synkronisering. PTP kan implementeras i både hårdvara och mjukvara. Den här rapporten fokuserar på att analysera hur systembelastning kan påverka precision och noggrannheten hos mjukvaruimplementerad PTP mellan två enheter. Testen utfördes på två stycken Intel Galileo Generation 2 kö- randes Linux. Mjukvara användes sedan för att simulera belastning på olika system såsom CPU, I/O, nätverk och på operativsystemet. Data extraherades ifrån loggar från mjukvaran, vilken sammanfattades i grafer för att sedan analyseras. Resultaten visade att precisionen och noggrannheten hos PTP försämras under vissa typer av systembelastningar, mest märkbart under tung I/O belastning. Resultaten är dock potentiellt inte applicerbara på verklighetscenarion på grund av begränsingar i hårdvaran samt att syntetiska stresstest inte motsvarar normal belastning. Ytterligare forskning krävs för att analysera hur och varför olika typer av systembelastning påverkar PTPs precision och noggrannhet.
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Li, Ching-Chang, and 李勁璋. "IEEE1588 Based High Precision Time Synchronization Implementation and Application for Mobile Systems." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/76438605969539897261.

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碩士
國立臺灣大學
電機工程學研究所
102
With the progress of the times, the dependency on desktop computers by people now is gradually shifted to mobile devices. Smart phones and tablet computers more and more popular. Mobiles devices bring a new type of life to people. People can use mobile devices to communicate to other people or other smart devices, also people can interact with smart mobile devices. Aglobal standard time for mobile devices to follow bacomes a basic issue. So a high precision time synchronization method is needed. In this paper, we design and implement a clock synchronization system for mobile devices. It is based on IEEE1588 precise time protocol. The IEEE1588 protocol defines the information and rules for precision time protocol (PTP). It can measure the clock offset between two devices by the exchange of time network packets. We build a virtual clock so that the operating system of mobile devices will not be invaded. IEEE1588 precision time protocol, clock state estimator and controller are used to implement clock synchronization system. First we use IEEE1588 precision time protocol to measure the clock offset between devices. Second we use the Kalman filter to estimate the clock state. Also, the parameters of the Kalman filter are adjusted by clock noise estimators. And third we adjust the clock frequency and control the clock phase by a proportion-integral controller. Experimental results show that our system provides good clock synchronization performances for mobile devices
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Conference papers on the topic "IEEE1687"

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Zadegan, Farrokh Ghani, Rene Krenz-Baath, and Erik Larsson. "Upper-bound computation for optimal retargeting in IEEE1687 networks." In 2016 IEEE International Test Conference (ITC). IEEE, 2016. http://dx.doi.org/10.1109/test.2016.7805838.

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Shibin, Konstantin, Sergei Devadze, and Artur Jutman. "On-line fault classification and handling in IEEE1687 based fault management system for complex SoCs." In 2016 17th Latin-American Test Symposium (LATS). IEEE, 2016. http://dx.doi.org/10.1109/latw.2016.7483342.

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Ye, Weidong. "IEEE1588 Clock servo algorithm." In Instruments (ICEMI). IEEE, 2009. http://dx.doi.org/10.1109/icemi.2009.5274861.

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Blixt, Stefan. "A Microcontroller with IEEE1588 Support." In 2007 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control and Communication. IEEE, 2007. http://dx.doi.org/10.1109/ispcs.2007.4383784.

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Ronen, Opher, and Maciej Lipinski. "Enhanced synchronization accuracy in IEEE1588." In 2015 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control, and Communication (ISPCS). IEEE, 2015. http://dx.doi.org/10.1109/ispcs.2015.7324687.

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Yang, Jun, Yong Guo, Zijing Cheng, Kai Lin, and Baojiang Cui. "Space Time Protocol Based on IEEE1588." In 2015 10th International Conference on Broadband and Wireless Computing, Communication and Applications (BWCCA). IEEE, 2015. http://dx.doi.org/10.1109/bwcca.2015.61.

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Ronen, Opher. "Synchronization monitoring in IEEE1588 synchronization networks." In 2013 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control and Communication (ISPCS). IEEE, 2013. http://dx.doi.org/10.1109/ispcs.2013.6644770.

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Meier, Sven. "Wireless IEEE1588 over an infrared interface." In 2016 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control, and Communication (ISPCS). IEEE, 2016. http://dx.doi.org/10.1109/ispcs.2016.7579505.

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Liu, BuFeng, ZhiQiang Ji, and ZhiXun Xie. "The application analysis of IEEE1588 in smart substation." In 2011 IEEE International Conference on Advanced Power System Automation and Protection (APAP). IEEE, 2011. http://dx.doi.org/10.1109/apap.2011.6180433.

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Tournier, Jean-Charles, and Xiao Yin. "Improving reliability of IEEE1588 in electric substation automation." In 2008 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control and Communication (ISPCS). IEEE, 2008. http://dx.doi.org/10.1109/ispcs.2008.4659215.

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