Research on digital twin technology and its application in intelligent operation and maintenance of highspeed railway infrastructure

Purpose–This paper analyzes the application of digital twin technology in the field of intelligent operation and maintenance of high-speed railway infrastructure from the perspective of top-level design.Design/methodology/approach–This paper provides a comprehensive overview of the definition,connotations,characteristics and key technologies of digital twin technology.It also conducts a thorough analysis of the current state of digital twin applications,with a particular focus on the overall requirements for intelligent operation and maintenance of high-speed railway infrastructure.Using the Jinan Yellow River Bridge on the Beijing–Shanghai high-speed railway as a case study,the paper details the construction process of the twin system from the perspectives of system architecture,theoretical definition,model construction and platform design.Findings–Digital twin technology can play an important role in the whole life cycle management,fault prediction and condition monitoring in the field of high-speed rail operation and maintenance.Digital twin technology is of great significance to improve the intelligent level of high-speed railway operation and management.Originality/value–This paper systematically summarizes the main components of digital twin railway.The general framework of the digital twin bridge is given,and its application in the field of intelligent operation and maintenance is prospected.

Artificial-intelligent-powered safety and efficiency improvement for controlling and scheduling in integrated railway systems

The multi-mode integrated railway system,anchored by the high-speed railway,caters to the diverse travel requirements both within and between cities,offering safe,comfortable,punctual,and eco-friendly transportation services.With the expansion of the railway networks,enhancing the efficiency and safety of the comprehensive system has become a crucial issue in the advanced development of railway transportation.In light of the prevailing application of artificial intelligence technologies within railway systems,this study leverages large model technology characterized by robust learning capabilities,efficient associative abilities,and linkage analysis to propose an Artificial-intelligent(AI)-powered railway control and dispatching system.This system is elaborately designed with four core functions,including global optimum unattended dispatching,synergetic transportation in multiple modes,high-speed automatic control,and precise maintenance decision and execution.The deployment pathway and essential tasks of the system are further delineated,alongside the challenges and obstacles encountered.The AI-powered system promises a significant enhancement in the operational efficiency and safety of the composite railway system,ensuring a more effective alignment between transportation services and passenger demands.

System architecture and basic platform for intelligent high-speed railway

Purpose-This paper aims to provide top-level design and basic platform for intelligent application in China high-speed railway.Design/methodology/approach-Based on the analysis for the future development trends of world railway,combined with the actual development needs in China high-speed railway,The definition and scientific connotation of intelligent high-speed railway(IHSR)are given at first,and then the system architecture of IHSR are outlined,including 1 basic platform,3 business sectors,10 business fields,and 18 innovative applications.At last,a basic platform with cloud edge integration for IHSR is designed.Findings-The rationality,feasibility and implementability of the system architecture of IHSR have been verified on and applied to the Beijing-Zhangjiakou high-speed railway,providing important support for the construction and operation of the world’s first IHSR.Originality/value-This paper systematically gives the definition and connotation of the IHSR and put forward the system architecture of IHSR for first time.It will play the most important role in the design,construction and operation of IHSR.

Key technologies and applications of intelligent dispatching command for high-speed railway in China

Purpose–The intelligent Central Traffic Control(CTC)system plays a vital role in establishing an intelligent high-speed railway(HSR)system.As the core of HSR transportation command,the intelligent CTC system is a new HSR dispatching command system that integrates the widely used CTC in China with the practical service requirements of intelligent dispatching.This paper aims to propose key technologies and applications for intelligent dispatching command in HSR in China.Design/methodology/approach–This paper first briefly introduces the functions and configuration of the intelligent CTC system.Some new servers,terminals and interfaces are introduced,which are plan adjustment server/terminal,interface for automatic train operation(ATO),interface for Dynamic Monitoring System of Train Control Equipment(DMS),interface for Power Supervisory Control and Data Acquisition(PSCADA),interface for Disaster Monitoring,etc.Findings–The key technologies applied in the intelligent CTC system include automatic adjustment of train operation plans,safety control of train routes and commands,traffic information data platform,integrated simulation of traffic dispatching and ATO function.These technologies have been applied in the Beijing-Zhangjiakou HSR,which commenced operations at the end of 2019.Implementing these key intelligent functions has improved the train dispatching command capacity,ensured the safe operation of intelligent HSR,reduced the labor intensity of dispatching operators and enhanced the intelligence level of China’s dispatching system.Originality/value–This paper provides further challenges and research directions for the intelligent dispatching command of HSR.To achieve the objectives,new measures need to be conducted,including the development of advanced technologies for intelligent dispatching command,coping with new requirements with the development of China’s railway signaling system,the integration of traffic dispatching and train control and the application of AI and data-driven modeling and methods.

A review of artificial intelligence applications in high-speed railway systems

In recent years,the global surge of High-speed Railway(HSR)revolutionized ground transportation,providing secure,comfortable,and punctual services.The next-gen HSR,fueled by emerging services like video surveillance,emergency communication,and real-time scheduling,demands advanced capabilities in real-time perception,automated driving,and digitized services,which accelerate the integration and application of Artificial Intelligence(AI)in the HSR system.This paper first provides a brief overview of AI,covering its origin,evolution,and breakthrough applications.A comprehensive review is then given regarding the most advanced AI technologies and applications in three macro application domains of the HSR system:mechanical manufacturing and electrical control,communication and signal control,and transportation management.The literature is categorized and compared across nine application directions labeled as intelligent manufacturing of trains and key components,forecast of railroad maintenance,optimization of energy consumption in railroads and trains,communication security,communication dependability,channel modeling and estimation,passenger scheduling,traffic flow forecasting,high-speed railway smart platform.Finally,challenges associated with the application of AI are discussed,offering insights for future research directions.

Research on Active Safety Methodologies for Intelligent Railway Systems

Safety is essential when building a strong transportation system.As a key development direction in the global railway system,the intelligent railway has safety at its core,making safety a top priority while pursuing the goals of efficiency,convenience,economy,and environmental friendliness.This paper describes the state of the art and proposes a system architecture for intelligent railway systems.It also focuses on the development of railway safety technology at home and abroad,and proposes the active safety method and technology system based on advanced theoretical methods such as the in-depth integration of cyber–physical systems(CPS),data-driven models,and intelligent computing.Finally,several typical applications are demonstrated to verify the advancement and feasibility of active safety technology in intelligent railway systems.

Current state and predicted technological trends in global railway intelligent digital transformation

Purpose–In recent years,railway systems worldwide have faced challenges such as the modernization of engineering projects,efficient management of intelligent digital railway equipment,rapid growth in passenger and freight transport demands,customized transport services and ubiquitous transport safety.The transformation toward intelligent digital transformation in railways has emerged as an effective response to the formidable challenges confronting the railway industry,thereby becoming an inevitable global trend in railway development.Design/methodology/approach–This paper,therefore,conducts a comprehensive analysis of the current state of global railway intelligent digital transformation,focusing on the characteristics and applications of intelligent digital transformation technology.It summarizes and analyzes relevant technologies and applicable scenarios in the realm of railway intelligent digital transformation,theoretically elucidating the development process of global railway intelligent digital transformation and,in practice,providing guidance and empirical examples for railway intelligence and digital transformation.Findings–Digital and intelligent technologies follow a wave-like pattern of continuous iterative evolution,progressing from the early stages,to a period of increasing attention and popularity,then to a phase of declining interest,followed by a resurgence and ultimately reaching a mature stage.Originality/value–The results offer reference and guidance to fully leverage the opportunities presented by the latest wave of the digitalization revolution,accelerate the overall upgrade of the railway industry and promote global collaborative development in railway intelligent digital transformation.

Research on the Application of Intelligent Construction Technology in Hangzhouxi Railway Station

Relying on the construction management of Hangzhouxi Railway Station,this paper analyses the comprehensive application of intelligent construction technology and the establishment of the common data environment(CDE)by using BIM technology.This paper gives the idea that such issues are deeply explored as large-span curved surface structure improvement,steel structure construction monitoring,special-shaped ticket check canopy construction,prefabricated machine room construction,grid construction management,etc.so as to form an intelligent construction management system based on BIM technology.The system has achieved good application results in economic benefits,social benefits and environmental benefits,which can promote the gradual transformation to a more digitalized,networked and intelligent Hangzhouxi Railway Station,and lay a solid foundation for achieving the construction goals of controllable construction period,excellent quality,green and low carbon,etc.

Study on 5G Application Scenarios in Intelligent High-Speed Railway

5G technology is indispensable for developing comprehensive perception and ubiquitous interconnection of intelligent high-speed railways(HSRs),and can be applied to many scenarios in intelligent construction,intelligent equipment,intelligent operation and in other fields.In order to promote the standardized application of 5G technology in intelligent HSRs in a scientific and orderly manner and to avoid redundant construction and wasteful investment,it is imperative to carry out a systematical top-level design of the application scenarios at the initial stage.To this end,after investigating and analyzing the 5G application demands in different aspects of HSRs and the general structure of the railway 5G network,this paper formulates an overall planning of 5G technology application scenarios and proposes solutions to some typical application scenarios in the intelligent HSR system,based on the architecture and requirements of the intelligent HSR system.

基于等保2.0标准在家电制造行业的评估与应用

在全球制造升级的大背景下,我国家电制造行业智能制造在持续建设,工业互联是家电制造行业转型的核心手段,工业网络安全保障体系建设是转型的重要支撑。家电制造行业面临网络安全建设、管理、运维制度不健全,网络安全技术识别、防护、检测、响应保障不完善等各种风险,这些风险存在数据泄密勒索、网络攻击、网络瘫痪等网络安全问题。根据等保2.0标准的“一个中心、三重防护”体系对家电制造行业目前存在的问题进行评估,探讨全面构建安全防护、安全管理、安全应用的体系及其系统建设应用,保障家电生产制造安全。

教育信息化2.0背景下智慧校园建设的探索与实践

智慧校园利用大数据、人工智能等技术手段,能够实现对教学过程的精准分析,帮助教师更好地了解学生的学习情况,制定个性化的教学计划.在教育信息化2.0背景下,智慧校园的建设不仅可以为学生提供开放互动的学习环境,鼓励学生主动探索、创新实践,培养学生的创新思维和实践能力,而且能够打破地域、资源的限制,推动教育公平性的实现.基于此,文中主要对教育信息化2.0与智慧校园建设进行简要概述,解析教育信息化2.0背景下智慧校园建设的意义,探究行之有效的建设路径,探索其在学校教育教学中的实践应用,旨在推进智慧校园建设,加快教育信息化发展步伐,为学生的健康成长和未来发展创造更加有利的条件.

模数一体化平台赋能下的智能高铁2.0关键技术展望

依托京张高铁重大工程,中国铁路融合应用多项数智化技术形成智能高铁1.0成套技术,并推广应用到多条新建线路。随着建造、装备、运营等领域智能化应用的不断深入,对模型、数据一体化共享和分析的需求日益迫切。分析模数一体化的内涵及关键,提出由模数汇聚层、模数存储层、模数管理层、模数计算层、模数聚合层等构成的模数一体化平台总体架构,并展望工程智能勘察及生成式设计、全专业智能施工、铁路工程数字孪生、CR450智能动车组、新一代铁路专用移动通信(5G-R)、多源信息感知、传输与融合分析的运营安全防护、基于位移的全行程智能服务(MaaS+)、区域路网的智能综合调度、动车组轮轨一体化智能维修等领跑型关键技术和多项创新型关键技术,可为数字铁路建设、智能高铁2.0科技攻关提供指导和借鉴。

智能高铁2.0成渝中线示范应用方案设计

针对成渝中线工程特点和建造、装备、运营等领域智能化需求,结合当前数字化智能化技术的发展,遵循智能高铁2.0科技攻关任务的整体布局,提出智能高铁2.0成渝中线示范应用的整体目标,构建“3大板块、10大领域、20个方向、主要创新和1个平台”的智能高铁2.0成渝中线技术体系框架,规划智能高铁2.0成渝中线示范的28项关键任务,并结合业务需求、技术成熟度、实施效果等多方面因素,提出2阶段实施路径,可为智能高铁2.0成渝中线示范提供顶层设计指导。

煤矿机器人2.0阶段融合发展路径探索

随着人工智能技术的不断发展和成熟,煤矿机器人及产业发展得到了越来越广泛的关注。基于煤矿机器人发展现状,首次提出煤矿机器人进入到2.0阶段的概念,并对煤矿机器人2.0阶段如何发展进行了路径探索。将煤矿机器人发展过程进行了分阶段探讨,明确将矿山与机器人解耦后是其发展路径的先决条件,并对煤矿机器人1.0阶段开展了精细化的梳理与解析;对煤矿机器人2.0阶段的发展路径思考做了详细阐述,指出煤矿机器人2.0阶段应该完成的重要任务及具备的重要特征,同时对中煤科工机器人科技有限公司在煤矿机器人2.0阶段的具体研究提出了详细规划;对煤矿机器人未来发展方向进行了系统性探讨,进一步指明煤矿机器人应具身智能,实现煤矿智能化、无人化应用。

Dynamics and Fault Diagnosis of Railway Vehicle Gearboxes:A Review

The railway vehicle gearbox is an important part of the railway vehicle traction transmission system which ensures the smooth running of railway vehicles.However,as the running speed of railway vehicles continues to increase,the railway vehicle gearbox is exposed to a more demanding operating environment.Under both internal and external excitations,the gearbox is prone to faults such as fatigue cracks,and broken teeth.It is crucial to detect these faults before they result in severe failures and accidents.Therefore,understanding the dynamics and fault diagnosis of railway vehicle gearbox is needed.At present,there is a lack of systematic review of railway vehicle gearbox dynamics and fault diagnosis.So,this paper systematically summarizes the research progress on railway vehicle gearbox dynamics and fault diagnosis.To this end,this paper first summarizes the latest research progress on the dynamics of railway vehicle gearboxes.The dynamics and vibration characteristics of the gearbox are summarized under internal and external excitations,as well as faulty conditions.Then,the stateof-the-art signal processing and artificial intelligence methods for fault diagnosis of railway vehicle gearboxes are reviewed.In the end,future research prospects are given.

教育信息化2.0背景下数智化测评探索——以昆明城市学院英语专业iTEST智能测试云平台应用为例

随着教育信息化2.0的深入推进,传统的教育评价方式正面临着重大的转型。旨在探讨教育信息化2.0背景下,数智化测评理论和模式的发展,并通过昆明城市学院英语专业iTEST智能测试云平台的应用案例,分析数智化测评在高等教育领域的实践效果和未来发展趋势。

“智能+”人事:教育信息化2.0视域下高校人事管理新样态

研究者从分析教育信息化2.0时代人工智能给高校人事管理带来的机遇和挑战入手,从“技术-社会”视角,探讨“智能+”人事的内涵,提出“智能+”人事的七种典型应用场景,论证从智慧人事转向“智能+”人事的现实需求。针对建构“智能+”人事过程中存在的问题,提出从管理制度、要素投入、开发模式、发展理念四个层面着力实现人事“智能化”,以期为AI赋能高校人事管理变革提供理论借鉴与实践引导。

The Study on the Framework and Implementation Scheme of the Railway Intelligent Cold Chain Logistics System

With the development of intelligent and communication technology, traditional logistics has gradually transformed into intelligent logistics. The construction of the railway intelligent cold chain logistics system is an effective measure to implement the structural adjustment of supply, which conforms to the times. Firstly, basic features and design principles of the railway intelligent cold chain logistics system were described. Secondly, target functions and the system framework of the railway intelligent cold chain logistics were put forward, which takes information service as a foundation, management service as a guarantee, business capability as kernel and expansion capability as support. Subsequently, the technical approaches were studied at the hardware, processing and software levels. Finally, development strategies of the railway intelligent cold chain logistics were discussed, including optimizing the layout of infrastructure, improving the performance of equipment, extending the reach of services, deepening the cooperation of technologies and promoting the formulation of standards which provides feasible references for the railway cold chain logistics to explore modern business models.

Development of rail technology for high speed railway in China

Purpose–The purpose of this paper is to summarize the status and characteristics of rail technology of high-speed railway in China,and point out the development direction of rail technology of high-speed railway.Design/methodology/approach–This study reviews the evolution of high-speed rail standards in China,comparing their chemical composition,mechanical attributes and geometric specifications with EN standards.It delves into the status of rail production technology,shifts in key performance indicators and the quality characteristics of rails.The analysis further examines the interplay between wheels and rails,the implementation of grinding technology and the techniques for inspecting rail service conditions.It encapsulates the salient features of rail operation and maintenance within the high-speed railway ecosystem.The paper concludes with an insightful prognosis of high-speed railway technology development in China.Findings–The rail standards of high-speed railway in China are scientific and advanced,highly operational and in line with international standards.The quality and performance of rail in China have reached the world’s advanced level.The 60N profile guarantees the operation quality of wheel–rail interaction effectively.The rail grinding technology system scientifically guarantees the long-term good service performance of the rail.The rail service state detection technology is scientific and efficient.The rail technology will take“more intelligent”and“higher speed”as the development direction to meet the future needs of high-speed railway in China.Originality/value–The development direction of rail technology for high-speed railway in China is defined,which will promote the continuous innovation and breakthrough of rail technology.

A System of Image Recognition-Based Railway Foreign Object Intrusion Monitoring Design

The monitoring system designed in this paper is on account of YOLOv5(You Only Look Once)to monitor foreign objects on railway tracks and can broadcast the monitoring information to the locomotive in real time.First,the general structure of the system is determined through demand analysis and feasibility analysis,the foreign object intrusion recognition algorithm is designed,and the data set required for foreign object intrusion recognition is made.Secondly,according to the functional demands,the system selects a suitable neural web,and the programming is reasonable.At last,the system is simulated to validate its functionality(identification and classification of track intrusion and determination of a safe operating zone).