Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Voting System Bus Protocol for a Highly-Reliable PLC with Redundant Modules

다중화 구조 고신뢰성 제어기기를 위한 보팅 시스템버스 프로토콜

  • Jeong, Woohyuk (Department of Electronic Engineering, Inha University) ;
  • Park, Jaehyun (Department of Information and Communication Engineering, Inha University)
  • 정우혁 (인하대학교 전자공학과) ;
  • 박재현 (인하대학교 정보통신공학부)
  • Received : 2013.12.09
  • Accepted : 2014.04.07
  • Published : 2014.06.01
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Abstract

An SPLC (Safety Programmable Logic Controller) must be designed to meet the highest safety standards, IEEE 1E, and should guarantee a level of fault-tolerance and high-reliability that ensures complete error-free operation. In order to satisfy these criteria, I/O modules, communication modules, processor modules and bus modules of the SPLC have been configured in triple or dual modular redundancy. The redundant modules receive the same data to determine the final data by the voting logic. Currently, the processor of each rx module performs the voting by deciding on the final data. It is the intent of this paper to prove the improvement on the current system, and develop a voting system for multiple data on a system bus level. The new system bus protocol is implemented based on a TCN-MVB that is a deterministic network consisting of a master-slave structure. The test result shows that the suggested system is better than the present system in view of its high utilization and improved performance of data exchange and voting.

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References

  1. G. S Son, D. H. Kim, C. W. Son, J. K. Kim, and J. H. Park, "Design of SPLC architecture used in advanced nuclear safety system and reliability analysis using markov model," Nuclear Technology, vol. 184, pp. 297-309, 2013. https://doi.org/10.13182/NT13-A24987
  2. K. C. Kwon and M. S. Lee, "Technical review on the localized digital instrumentation and control systems," Nuclear Engineering and Technology (in Korean), vol. 41, no. 4, pp. 447- 454, 2009. https://doi.org/10.5516/NET.2009.41.4.447
  3. IEEE, "Standard for Qualifying Class 1E Equipment for Nuclear Power Generating Stations," IEEE 323, 2003.
  4. V. B. Prasad, "Fault tolerant digital systems," Potentials, IEEE, vol. 8, no. 1, pp. 17-21, 1989.
  5. C. A. L. Lisboa, E. Schuler, and L. Carro, "Going beyond TMR for protection against multple faults," 18th Symposium on Integrated Circuits and Systems Design, pp. 80-85, 2005.
  6. V. P. Nelson, "Fault-tolerant computing: fundamental concepts," Computer, IEEE, vol. 23, no. 7, pp. 19-25, 1990. https://doi.org/10.1109/2.56849
  7. B. Frogner and H. S. Rao, "Control of nuclear power plants," IEEE Transaction on Automatic Control, vol. 23, no. 3, pp. 405- 417, 1978. https://doi.org/10.1109/TAC.1978.1101774
  8. J. P. Noh, J. H. Park, K. S. Son, and D. H. Kim, "Reliability analysis of redundant architecture of dependable control system," Journal of Institute of Control, Robotics and Systems (in Korean), vol. 19, no. 6, pp. 328-333, 2013. https://doi.org/10.5302/J.ICROS.2013.12.1857
  9. IEC, "International standard for electric railway equipment-train bus-Part 1: Train communication network," IEC 61375-1, 2007.
  10. J. Y. Sul, K. C. Kim, Y. S. Kim, and J. H. Park, "Implementation of high-reliable MVB network for safety system of nuclear power plant," The Trans. of the Korean Institute of Electrical Engineers (in Korean), vol. 61, no. 6, pp. 859-864, 2012. https://doi.org/10.5370/KIEE.2012.61.6.859