Performance evaluation of railway blocking system based on Markov chain and queuing theory

Jin Guo; Hongxia Chen; Yang Yang

doi:10.1117/12.664547

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2 May 2006 Performance evaluation of railway blocking system based on markov chain and queuing theory

Jin Guo, Hongxia Chen, Yang Yang

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Proceedings Volume 6042, ICMIT 2005: Control Systems and Robotics; 60420H (2006) https://doi.org/10.1117/12.664547
Event: ICMIT 2005: Merchatronics, MEMS, and Smart Materials, 2005, Chongqing, China

Abstract

Railway blocking system is the system with the high demanding of real-time performance. Firstly, the tasks and the time limits, which had to be handled for the blocking system, were introduced. The FCFS and the Markov chain were used to set the model for it. By analyzing the performance of the system with the FCFS model found out that it was not satisfied to the real-time performance. Secondly, NPPR model to evaluate the software real-time performance of the blocking processor was proposed. By evaluation, analysis and comparison, the results indicate that the NPPR model is prevail over the model of (M/M/1): (N/N/FCFS) in real-time performance. And the priorities of the tasks in the system should be given according to their time limit. With the principle of (M/M/1): (N/N/NPPR), if the priority was given to the tasks properly, the satisfied real-time performance will be gotten. The models were tested in forms software and the satisfied result has been gotten in practice.

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Jin Guo, Hongxia Chen, and Yang Yang "Performance evaluation of railway blocking system based on markov chain and queuing theory", Proc. SPIE 6042, ICMIT 2005: Control Systems and Robotics, 60420H (2 May 2006); https://doi.org/10.1117/12.664547

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