半自動閉塞控制信息數(shù)字化傳輸系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)
發(fā)布時(shí)間：2018-10-11 08:40
【摘要】：哈爾濱鐵路局管轄內(nèi)存在大量的半自動閉塞區(qū)段，而且閉塞外線絕大多數(shù)采用架空明線，存在超期服役、故障率高、維護(hù)難度大、影響行車安全等諸多問題。本文在綜合分析、比較國內(nèi)外站間閉塞信息傳輸技術(shù)的基礎(chǔ)上，提出采用光通信技術(shù)替代原始的架空明線，并研究用于站間控制信息傳輸?shù)膫鬏斣O(shè)備。 站間安全信息傳輸工作原理很簡單，就是由源站傳輸設(shè)備采集本地相關(guān)信息條件后，通過站間光通道傳送到目的站，目的站傳輸設(shè)備根據(jù)接收到的站間信息對應(yīng)輸出相應(yīng)條件。 站間安全信息傳輸屬于功能安全范疇，信息的采集和驅(qū)動易于實(shí)現(xiàn)，而保證傳遞的信息一致性更為重要。因此，本文重點(diǎn)對傳輸設(shè)備的軟硬件可靠性問題展開了研究和設(shè)計(jì)工作。 在硬件設(shè)計(jì)方面，為了保證信息傳輸、處理和響應(yīng)時(shí)間（包括執(zhí)行通信接口協(xié)議），對硬件開發(fā)平臺進(jìn)行了比選，提出了采用真正能獨(dú)立工作的片上系統(tǒng)——C8051F060單片機(jī)作為硬件開發(fā)平臺。由于該系統(tǒng)較之傳統(tǒng)的8051在性能上有了全面的提升，具有片內(nèi)資源豐富、配置靈活和高速指令處理能力的優(yōu)勢，，為提高控制信息的傳輸速度提供了有力的保障。另外，在系統(tǒng)的可靠性、可用性、可維護(hù)性及安全性方面采取了一些必要措施。其中，在可靠性方面，傳輸設(shè)備中采用的所有元器件均采用工業(yè)級以上，采集、驅(qū)動及通信電路均采用有多年運(yùn)用經(jīng)驗(yàn)的成熟電路；在可用性方面，傳輸設(shè)備采用雙機(jī)熱備冗余結(jié)構(gòu)，主機(jī)與備機(jī)并行輸出，共同驅(qū)動繼電器，站間通道采用冗余通道；在可維護(hù)性方面，傳輸設(shè)備設(shè)計(jì)成由多個(gè)支持熱插拔單元板卡構(gòu)成，并具有自診斷和輔助維護(hù)功能；在安全性方面，采取了雙CPU硬件結(jié)構(gòu)，采集信息源、輸出驅(qū)動源均采用動態(tài)脈沖，并按“二取二”原則輸出，驅(qū)動執(zhí)行單元采用了“安全與”電路。 在軟件設(shè)計(jì)方面，由于信息傳輸設(shè)備間信息傳遞的通道為獨(dú)立光纖通道或2M通道，屬于封閉式傳輸系統(tǒng)中的安全通信范疇。因此，本文采用了時(shí)間戳、超時(shí)檢查、源標(biāo)識符SID識別、接收錯(cuò)誤時(shí)反饋消息及32位CRC循環(huán)冗余校驗(yàn)和32位系統(tǒng)檢測字雙重校驗(yàn)等安全防御技術(shù)。有效地克服了數(shù)據(jù)接收時(shí)可能出現(xiàn)的數(shù)據(jù)幀重復(fù)、數(shù)據(jù)幀丟失、數(shù)據(jù)幀插入、數(shù)據(jù)幀次序混亂、數(shù)據(jù)幀錯(cuò)誤及數(shù)據(jù)幀傳輸超時(shí)等六種安全威脅，保證了控制信息的功能安全。在數(shù)據(jù)通信安全層，采用了運(yùn)基信號[2010]267號《鐵路信號安全通信協(xié)議技術(shù)規(guī)范》中《鐵路信號安全通信協(xié)議-I（RSSP-I）》的安全協(xié)議，保證了設(shè)備具有良好的互聯(lián)互通能力。
[Abstract]:There are a large number of semi-automatic block sections within the jurisdiction of Harbin Railway Administration, and most of the blocked exterior lines use overhead open lines, which have many problems, such as excessive service, high failure rate, great difficulty in maintenance, affecting the safety of driving, and so on. On the basis of comprehensive analysis and comparison of interstation block information transmission technology at home and abroad, this paper proposes to use optical communication technology to replace the original overhead open line, and to study the transmission equipment used to control the transmission of information between stations. The principle of inter-station security information transmission is very simple, that is, after the source station transmission equipment collects the local relevant information condition, it is transmitted to the destination station through the inter-station optical channel, and the destination station transmission device outputs the corresponding condition according to the received inter-station information. Inter-station security information transmission belongs to the category of functional security, the collection and drive of information is easy to realize, and it is more important to ensure the consistency of the transmitted information. Therefore, this paper focuses on the hardware and software reliability of transmission equipment research and design work. In the aspect of hardware design, in order to ensure information transmission, processing and response time (including executing communication interface protocol), the hardware development platform is compared. C8051F060 single chip microcomputer, which can work independently, is used as hardware development platform. Compared with the traditional 8051, the system has the advantages of comprehensive performance, abundant in-chip resources, flexible configuration and high speed instruction processing capacity, which provides a powerful guarantee for improving the transmission speed of control information. In addition, some necessary measures are taken in reliability, availability, maintainability and security of the system. Among them, in terms of reliability, all the components used in the transmission equipment are of industrial grade or above, and the acquisition, drive and communication circuits are all mature circuits with many years of application experience; in terms of availability, The transmission equipment adopts the double machine hot standby redundant structure, the main engine and the standby machine parallel output, drives the relay together, the interstation passage uses the redundant channel; in the maintainability aspect, the transmission equipment is designed to be composed of several supporting hot plug and pull out unit board cards, It has the function of self-diagnosis and auxiliary maintenance, and in the aspect of security, it adopts double CPU hardware structure, collects information source, outputs the driving source with dynamic pulse, and outputs according to the principle of "two get two". The driver executive unit uses the "safe and" circuit. In the aspect of software design, the channel of information transmission equipment is independent fiber channel or 2m channel, which belongs to the category of secure communication in closed transmission system. Therefore, security defense techniques such as timestamp, timeout checking, source identifier SID identification, feedback message when receiving errors, 32 bit CRC cyclic redundancy check and 32 bit system detection word double check are used in this paper. It effectively overcomes six kinds of security threats, such as data frame duplication, data frame loss, data frame insertion, data frame order confusion, data frame error and data frame transmission timeout, which can ensure the function security of control information. In the security layer of data communication, the security protocol of railway signal security communication protocol I (RSSP-I) in the transport base signal [2010] 267 (Railway signal Security Communication Protocol) is adopted, which ensures the equipment has good ability of interconnection and interworking.
【學(xué)位授予單位】：上海交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TP273;TP368.12
本文編號：2263552
[Abstract]:There are a large number of semi-automatic block sections within the jurisdiction of Harbin Railway Administration, and most of the blocked exterior lines use overhead open lines, which have many problems, such as excessive service, high failure rate, great difficulty in maintenance, affecting the safety of driving, and so on. On the basis of comprehensive analysis and comparison of interstation block information transmission technology at home and abroad, this paper proposes to use optical communication technology to replace the original overhead open line, and to study the transmission equipment used to control the transmission of information between stations. The principle of inter-station security information transmission is very simple, that is, after the source station transmission equipment collects the local relevant information condition, it is transmitted to the destination station through the inter-station optical channel, and the destination station transmission device outputs the corresponding condition according to the received inter-station information. Inter-station security information transmission belongs to the category of functional security, the collection and drive of information is easy to realize, and it is more important to ensure the consistency of the transmitted information. Therefore, this paper focuses on the hardware and software reliability of transmission equipment research and design work. In the aspect of hardware design, in order to ensure information transmission, processing and response time (including executing communication interface protocol), the hardware development platform is compared. C8051F060 single chip microcomputer, which can work independently, is used as hardware development platform. Compared with the traditional 8051, the system has the advantages of comprehensive performance, abundant in-chip resources, flexible configuration and high speed instruction processing capacity, which provides a powerful guarantee for improving the transmission speed of control information. In addition, some necessary measures are taken in reliability, availability, maintainability and security of the system. Among them, in terms of reliability, all the components used in the transmission equipment are of industrial grade or above, and the acquisition, drive and communication circuits are all mature circuits with many years of application experience; in terms of availability, The transmission equipment adopts the double machine hot standby redundant structure, the main engine and the standby machine parallel output, drives the relay together, the interstation passage uses the redundant channel; in the maintainability aspect, the transmission equipment is designed to be composed of several supporting hot plug and pull out unit board cards, It has the function of self-diagnosis and auxiliary maintenance, and in the aspect of security, it adopts double CPU hardware structure, collects information source, outputs the driving source with dynamic pulse, and outputs according to the principle of "two get two". The driver executive unit uses the "safe and" circuit. In the aspect of software design, the channel of information transmission equipment is independent fiber channel or 2m channel, which belongs to the category of secure communication in closed transmission system. Therefore, security defense techniques such as timestamp, timeout checking, source identifier SID identification, feedback message when receiving errors, 32 bit CRC cyclic redundancy check and 32 bit system detection word double check are used in this paper. It effectively overcomes six kinds of security threats, such as data frame duplication, data frame loss, data frame insertion, data frame order confusion, data frame error and data frame transmission timeout, which can ensure the function security of control information. In the security layer of data communication, the security protocol of railway signal security communication protocol I (RSSP-I) in the transport base signal [2010] 267 (Railway signal Security Communication Protocol) is adopted, which ensures the equipment has good ability of interconnection and interworking.
【學(xué)位授予單位】：上海交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TP273;TP368.12
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