High-speed Railway最新文献_第10页

Image fusion methods in high-speed railway scenes: A survey 高速铁路场景图像融合方法综述

High-speed Railway Pub Date : 2023-06-01 DOI: 10.1016/j.hspr.2023.01.001

Yuqiao Zeng , Xu Wang , Hongwei Zhao , Yi Jin , George A. Giannopoulos , Yidong Li

{"title":"Image fusion methods in high-speed railway scenes: A survey","authors":"Yuqiao Zeng , Xu Wang , Hongwei Zhao , Yi Jin , George A. Giannopoulos , Yidong Li","doi":"10.1016/j.hspr.2023.01.001","DOIUrl":"https://doi.org/10.1016/j.hspr.2023.01.001","url":null,"abstract":"<div><p>Image fusion refers to extracting meaningful information from images of different sources or modalities, and then fusing them to generate more informative images that are beneficial for subsequent applications. In recent years, the growing data and computing resources have promoted the development of deep learning, and image fusion technology has continued to spawn new deep learning fusion methods based on traditional fusion methods. However, high-speed railroads, as an important part of life, have their unique industry characteristics of image data, which leads to different image fusion techniques with different fusion effects in high-speed railway scenes. This research work first introduces the mainstream technology classification of image fusion, further describes the downstream tasks that image fusion techniques may combine within high-speed railway scenes, and introduces the evaluation metrics of image fusion, followed by a series of subjective and objective experiments to completely evaluate the performance level of each image fusion method in different traffic scenes, and finally provides some possible future image fusion in the field of rail transportation of research.</p></div>","PeriodicalId":100607,"journal":{"name":"High-speed Railway","volume":"1 2","pages":"Pages 87-91"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49700186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A review of high performance computing applications in high-speed rail systems 高性能计算在高速铁路系统中的应用综述

High-speed Railway Pub Date : 2023-06-01 DOI: 10.1016/j.hspr.2023.05.001

Shenyuan Ren , Yidong Li

{"title":"A review of high performance computing applications in high-speed rail systems","authors":"Shenyuan Ren , Yidong Li","doi":"10.1016/j.hspr.2023.05.001","DOIUrl":"https://doi.org/10.1016/j.hspr.2023.05.001","url":null,"abstract":"<div><p>Further improving the railway innovation capacity and technological strength is the important goal of the 14th Five-Year Plan for railway scientific and technological innovation. It includes promoting the deep integration of cutting-edge technologies with the railway systems, strengthening the research and application of intelligent railway technologies, applying green computing technologies and advancing the collaborative sharing of transportation big data. The high-speed rail system tasks need to process huge amounts of data and heavy workload with the requirement of ultra-fast response. Therefore, it is of great necessity to promote computation efficiency by applying High Performance Computing (HPC) to high-speed rail systems. The HPC technique is a great solution for improving the performance, efficiency, and safety of high-speed rail systems. In this review, we introduce and analyze the application research of high performance computing technology in the field of high-speed railways. These HPC applications are cataloged into four broad categories, namely: fault diagnosis, network and communication, management system, and simulations. Moreover, challenges and issues to be addressed are discussed and further directions are suggested.</p></div>","PeriodicalId":100607,"journal":{"name":"High-speed Railway","volume":"1 2","pages":"Pages 92-96"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49700187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wireless channel estimation for high-speed rail communications: Challenges, solutions and future directions 高速铁路通信无线信道估计:挑战、解决方案和未来方向

High-speed Railway Pub Date : 2023-03-01 DOI: 10.1016/j.hspr.2022.11.004

Xuying Chen , Wei Chen , Xiao Gong , Bo Ai , Ian Wassell

{"title":"Wireless channel estimation for high-speed rail communications: Challenges, solutions and future directions","authors":"Xuying Chen , Wei Chen , Xiao Gong , Bo Ai , Ian Wassell","doi":"10.1016/j.hspr.2022.11.004","DOIUrl":"https://doi.org/10.1016/j.hspr.2022.11.004","url":null,"abstract":"<div><p>With the development of High-Speed Rail (HSR), countries and individual passengers alike have enjoyed far ranging benefits as a result – economic, social, environment and in added convenience. One of the important parts of HSR construction is the signaling system, where wireless communications play a key role in the transmission of train control data. Channel estimation has a significant impact on the quality of the wireless communication, however, whose performance is degraded due to the fast mobility of HSR. This paper focuses on the channel estimation technology in HSR. We first summarize the key challenges for HSR channel estimation, especially the Inter-Carrier Interference (ICI) faced by Orthogonal Frequency Division Multiplexing (OFDM) systems. Then we provide a comprehensive review of existing pilot-aided channel estimation schemes from three points: channel model, estimation algorithm, joint channel estimation and ICI mitigation schemes. Lastly, we present the challenges of channel estimation for the Orthogonal Time Frequency Space (OTFS) system and Reconfigurable Intelligent Surface (RIS), which are promising techniques for HSR systems in the future sixth Generation (6G) wireless communication.</p></div>","PeriodicalId":100607,"journal":{"name":"High-speed Railway","volume":"1 1","pages":"Pages 18-22"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49876341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on key technologies of GNSS-based train state perception for train-centric railway signaling 基于gnss的以列车为中心的列车状态感知关键技术研究

High-speed Railway Pub Date : 2023-03-01 DOI: 10.1016/j.hspr.2022.12.003

Baigen Cai , Jingnan Liu , Xurong Dong , Jiang Liu

{"title":"Study on key technologies of GNSS-based train state perception for train-centric railway signaling","authors":"Baigen Cai , Jingnan Liu , Xurong Dong , Jiang Liu","doi":"10.1016/j.hspr.2022.12.003","DOIUrl":"https://doi.org/10.1016/j.hspr.2022.12.003","url":null,"abstract":"<div><p>The application of Global Navigation Satellite Systems (GNSSs) in the intelligent railway systems is rapidly developing all over the world. With the GNSS-based train positioning and moving state perception, the autonomy and flexibility of a novel train control system can be greatly enhanced over the existing solutions relying on the track-side facilities. Considering the safety critical features of the railway signaling applications, the GNSS stand-alone mode may not be sufficient to satisfy the practical requirements. In this paper, the key technologies for applying GNSS in novel train-centric railway signaling systems are investigated, including the multi-sensor data fusion, Virtual Balise (VB) capturing and messaging, train integrity monitoring and system performance evaluation. According to the practical characteristics of the novel train control system under the moving block mode, the details of the key technologies are introduced. Field demonstration results of a novel train control system using the presented technologies under the practical railway operation conditions are presented to illustrate the achievable performance feature of autonomous train state perception using BeiDou Navigation Satellite System (BDS) and related solutions. It reveals the great potentials of these key technologies in the next generation train control system and other GNSS-based railway implementations.</p></div>","PeriodicalId":100607,"journal":{"name":"High-speed Railway","volume":"1 1","pages":"Pages 47-55"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49876337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the technologies development trend of high speed EMUs 高速动车组技术发展趋势研究

High-speed Railway Pub Date : 2023-03-01 DOI: 10.1016/j.hspr.2022.11.002

Chunfang Lu , Zunsong Ren , Chengxian Ma

引用次数: 0

Rail fastener detection of heavy railway based on deep learning 基于深度学习的重型铁路轨道扣件检测

High-speed Railway Pub Date : 2023-03-01 DOI: 10.1016/j.hspr.2022.11.001

Yuan Cao , Zihao Chen , Tao Wen , Clive Roberts , Yongkui Sun , Shuai Su

{"title":"Rail fastener detection of heavy railway based on deep learning","authors":"Yuan Cao , Zihao Chen , Tao Wen , Clive Roberts , Yongkui Sun , Shuai Su","doi":"10.1016/j.hspr.2022.11.001","DOIUrl":"https://doi.org/10.1016/j.hspr.2022.11.001","url":null,"abstract":"<div><p>Image detection based on machine learning and deep learning currently has a good application prospect for railway fault diagnosis, with good performance in feature extraction and the accuracy of image localization and good classification results. To improve the speed of locating small target objects of fasteners, the YOLOv5 framework model with faster algorithm speed is selected. To improve the classification accuracy of fasteners, YOLOv5-based heavy-duty railway rail fastener detection is proposed. The anchor size is modified on the original basis to improve the attention to small targets of fasteners. The CBAM (Convolutional Block Attention Module) module and TPH (Transformer Prediction Head) module are introduced to improve the speed and accuracy issues. The rail fasteners are divided into 6 categories. Experiment comparisons show that before the improvement, the MAP@ 0.5 value of all categories are close to the peak of 0.989 after the epoch of 150, and the F1 score approaches 1 with confidence in the interval (0.2, 0.95). The improved mAP@ 0.5 value approached the highest value of 0.991 after the epoch of 75, and the F1 score approached 1 with confidence in the interval (0.01, 0.95). The experiment results indicate that the improved YOLOv5 model proposed in this paper is more suitable for the task of detecting rail fasteners.</p></div>","PeriodicalId":100607,"journal":{"name":"High-speed Railway","volume":"1 1","pages":"Pages 63-69"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49876335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Security of railway control systems: A survey, research issues and challenges 铁路控制系统安全:调查、研究问题与挑战

High-speed Railway Pub Date : 2023-03-01 DOI: 10.1016/j.hspr.2022.12.001

Zujun Yu, Hongwei Wang, Feng Chen

{"title":"Security of railway control systems: A survey, research issues and challenges","authors":"Zujun Yu, Hongwei Wang, Feng Chen","doi":"10.1016/j.hspr.2022.12.001","DOIUrl":"https://doi.org/10.1016/j.hspr.2022.12.001","url":null,"abstract":"<div><p>With the rapid development of railway transportation, higher requirements for capacity are increasing and amount of communication, computer and control technologies are applied in train control systems which is the popular method for train control. The application of 3 C brings the enhancement of railway transportation performance. However, the number of internal and external cyber security threats is rising, which could lead to some railway accidents. On the other hand, safety is the core of the design process for railway but security is rarely considered due to the closure of traditional railway systems. As cyber security is threatening the normal operation of industrial control systems and the critical infrastructure, security issues of train control systems should be paid more attention as railway transportation play an important role for society and economy. However, due to the safety-critical characteristics, safety assessment and analysis works have been performed for a long time, but cyber security related works are rarely considered. In the paper, we demonstrate the security situation of train control systems based on the inherent features and the experience of other industrial control systems, where the technical defects and potential threats are summarized. According to the practical engineering experience, the current security protection strategies are illustrated, which shows the popular security protection methods are limited and cannot realize the defense-in-depth. Finally, some research challenges of security issues of train control systems are identified.</p></div>","PeriodicalId":100607,"journal":{"name":"High-speed Railway","volume":"1 1","pages":"Pages 6-17"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49876340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

A method for calculating strand tension in the anchor span of a suspension bridge considering the rotation of a splay saddle 一种考虑鞍座旋转的悬索桥锚跨张力计算方法

High-speed Railway Pub Date : 2023-03-01 DOI: 10.1016/j.hspr.2022.11.005

Xuejin Huo , Jia Chen , Dongxu Wang , Li Zhu

{"title":"A method for calculating strand tension in the anchor span of a suspension bridge considering the rotation of a splay saddle","authors":"Xuejin Huo , Jia Chen , Dongxu Wang , Li Zhu","doi":"10.1016/j.hspr.2022.11.005","DOIUrl":"https://doi.org/10.1016/j.hspr.2022.11.005","url":null,"abstract":"<div><p>This paper reports a method for strand tension in anchor spans considering rotation. A kind of co-moved coordinate system, a saddle local coordinate system, was set up. This system implemented the rotation of the splay saddle through the rotation of the coordinate system, and all calculations proceeded in this coordinate system. Considering the rotation of the anchoring surface by the rotation of the local coordinate system of the anchoring surface, the anchorage point coordinates of strands were transformed to the local saddle coordinate system. There was a two-layer iteration adopted in the calculation. In the inner iteration, the cable force at the end of the vertical bend was taken as the variable, and the ordinate of the anchorage point was taken as the target value. In the outer iteration, the vertical tangential angle at the end of the vertical bend was taken as the variable, and the ordinate of the anchorage point was taken as the target value. The method carried out the rotation of the splay saddle and anchor surface and was simple, convenient and without approximation. The effect of rotation was considered precisely; it showed stability during the process of two-layer iteration, powerful adaptation and higher efficiency and had been successfully applied in the construction control of the Wufengshan Yangtze River Bridge, the world's first kilometer-level combined highway and railway suspension bridge.</p></div>","PeriodicalId":100607,"journal":{"name":"High-speed Railway","volume":"1 1","pages":"Pages 56-62"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49876336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Improving rail vehicle dynamic performance with active suspension 利用主动悬架改善轨道车辆动力性能

High-speed Railway Pub Date : 2023-03-01 DOI: 10.1016/j.hspr.2022.12.002

Sebastian Stichel, Rickard Persson, Rocco Giossi

{"title":"Improving rail vehicle dynamic performance with active suspension","authors":"Sebastian Stichel, Rickard Persson, Rocco Giossi","doi":"10.1016/j.hspr.2022.12.002","DOIUrl":"https://doi.org/10.1016/j.hspr.2022.12.002","url":null,"abstract":"<div><p>Today, it is difficult to further improve the dynamic performance of rail vehicles with conventional passive suspension. Also, simplified vehicle respectively running gear layouts that significantly could reduce vehicle weights are difficult to realize with modern requirements on passenger vibration comfort and wheel and rail wear. Active suspension is a powerful technology that can improve the vehicle dynamic performance and make simplified vehicle concepts possible. The KTH Railway group has, together with external partners, investigated active suspensions both numerically and experimentally for 15 years. The paper provides a summary of the activities and the most important findings. One major project carried out in close collaboration with the vehicle manufacturer Bombardier and the Swedish Transport Administration was the Green Train project, where a 2-car EMU test bench was used to demonstrate different active technologies. In ongoing projects, a concept of single axle - single suspension running gear is developed with active suspension both for comfort improvement and reduced wheel wear in curves. The results from on-track tests in the Green Train project were so good that the technology is now implemented in commercial trains and the simulation results for the single-axle running gear are very promising.</p></div>","PeriodicalId":100607,"journal":{"name":"High-speed Railway","volume":"1 1","pages":"Pages 23-30"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49876312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Behaviour of non-ballast pre-stressed and precast track structures in high speed railway based on multiscale finite element model 基于多尺度有限元模型的高速铁路无砟预应力和预制轨道结构性能研究

High-speed Railway Pub Date : 2023-03-01 DOI: 10.1016/j.hspr.2022.11.003

Yuhang Wang , Jijun Wang , Qi Tang , Jike Tan , Guobing Lu

引用次数: 0