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1. 中国铁道科学研究院研究生部,北京 100081
2. 北京交通大学轨道交通运行控制系统国家工程研究中心,北京 100044
3. 北京交通大学电子信息工程学院,北京 100044
[ "高莺(1985−),女,山东烟台人,中国铁道科学研究院博士生、工程师,主要研究方向为安全分析。" ]
[ "曹源(1982−),男,回族,河南开封人,博士,北京交通大学副教授、博士生导师,主要研究方向为通信的列车控制技术。" ]
[ "孙永奎(1993−),男,河南商丘人,北京交通大学博士生,主要研究方向为铁路信号系统故障诊断。" ]
[ "马连川(1970−),男,河北唐山人,北京交通大学副教授,主要研究方向为列控系统安全计算机技术。" ]
[ "洪春华(1990−),男,福建福州人,北京交通大学硕士生,主要研究方向为列控系统安全计算机技术及形式化验证。" ]
[ "张玉琢(1990−),男,河南信阳人,北京交通大学博士生,主要研究方向为 Petri 网理论及在列车运行控制系统的应用。" ]
网络出版日期:2018-12,
纸质出版日期:2018-12-25
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高莺, 曹源, 孙永奎, 等. 面向车车通信的安全计算机时间约束性分析验证[J]. 通信学报, 2018,39(12):82-90.
Ying GAO, Yuan CAO, Yongkui SUN, et al. Analysis and verification of safety computer time constraints for train-to-train communications[J]. Journal on communications, 2018, 39(12): 82-90.
高莺, 曹源, 孙永奎, 等. 面向车车通信的安全计算机时间约束性分析验证[J]. 通信学报, 2018,39(12):82-90. DOI: 10.11959/j.issn.1000−436x.2018275.
Ying GAO, Yuan CAO, Yongkui SUN, et al. Analysis and verification of safety computer time constraints for train-to-train communications[J]. Journal on communications, 2018, 39(12): 82-90. DOI: 10.11959/j.issn.1000−436x.2018275.
为适应基于通信的列车运行控制(CBTC
communication based train control)系统从车地模式向车车通信模式发展的趋势,针对多周期性应用并发的车载安全计算机的时间约束性,提出了基于时间 Petri 网的安全计算机时间约束性验证方法。以车载2乘2取2安全计算机为例,通过分析安全计算机多周期应用的并发性质,采用时间Petri网(TPN
time Petri net)推算其时间可调度区间,并在此基础上进行实例分析。分析和验证结果表明,在单核主频1GHz的条件下,车载安全计算机能满足3个以上周期性安全关键应用的时间约束性,表明TPN在验证和评估安全计算机中周期性应用的时间约束性方面的有效性。
In order to adapt to the development trend of the communication based train control (CBTC) system from train-ground communication mode to train-to-train communication mode
a verification approach for time constraints of multi-period applications concurrence on-board safety computer based on time Petri net was proposed. By taking the double 2 out of 2 on-board safety computer as an example
the multi-period applications concurrence nature of the safety computer was analyzed. Time Petri net (TPN) was utilized to calculate the time schedulable interval. Then several cases were analyzed based on the inference of this approach. The analysis and verification results indicate that onboard safety computer can meet the time constraints of more than three periodic safety-critical applications under the condition of single-core with main frequency of 1GHz
which demonstrates the effectiveness of verifying and evaluating the time constraints of safety computer periodic applications using TPN.
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