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Proceedings 1997 IEEE International Workshop on Factory Communication Systems. WFCS'97最新文献

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Industrial LANs with real-time communication servers 带有实时通信服务器的工业局域网
Proceedings 1997 IEEE International Workshop on Factory Communication Systems. WFCS'97 Pub Date : 1997-10-01 DOI: 10.1109/WFCS.1997.634291
P. Marino, F. Poza, J. Nogueira
{"title":"Industrial LANs with real-time communication servers","authors":"P. Marino, F. Poza, J. Nogueira","doi":"10.1109/WFCS.1997.634291","DOIUrl":"https://doi.org/10.1109/WFCS.1997.634291","url":null,"abstract":"Shop floor communications networks are evolving towards the increased use of open connecting equipment, that meets standard protocols, under a client/server architecture. An implementation of such a communications server, based on a low cost PC with multiport and field bus cards, is presented. The first prototype has been designed as a black box transparent to flexible manufacturing plants, connecting until sixteen scara robots and thirty programmable logic controllers.","PeriodicalId":433593,"journal":{"name":"Proceedings 1997 IEEE International Workshop on Factory Communication Systems. WFCS'97","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122349762","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: 4
A real time video aggregation over ATM 通过ATM实现实时视频聚合
Proceedings 1997 IEEE International Workshop on Factory Communication Systems. WFCS'97 Pub Date : 1997-10-01 DOI: 10.1109/WFCS.1997.634303
J. Fornés, F. R. Rubio
{"title":"A real time video aggregation over ATM","authors":"J. Fornés, F. R. Rubio","doi":"10.1109/WFCS.1997.634303","DOIUrl":"https://doi.org/10.1109/WFCS.1997.634303","url":null,"abstract":"The paper describes the implementation of a real time VAS (Video Aggregation System) on a parallel architecture based on a multiprocessor system with five C40 DSP's. Video aggregation of MPEG for a group of video sessions as a bundle is to perform compression and multiplexing of video streams before packetization (i.e. before the ATM layer). This system may be used to telesupervise factory processes when we need some video sources simultaneously.","PeriodicalId":433593,"journal":{"name":"Proceedings 1997 IEEE International Workshop on Factory Communication Systems. WFCS'97","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130815109","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
Factory communication systems to meet multi-media requirements 工厂通讯系统满足多媒体要求
Proceedings 1997 IEEE International Workshop on Factory Communication Systems. WFCS'97 Pub Date : 1997-10-01 DOI: 10.1109/WFCS.1997.634314
G. Haidegger, J. Nacsa
{"title":"Factory communication systems to meet multi-media requirements","authors":"G. Haidegger, J. Nacsa","doi":"10.1109/WFCS.1997.634314","DOIUrl":"https://doi.org/10.1109/WFCS.1997.634314","url":null,"abstract":"Communication systems on the factory environment are evolving just as rapidly as in other application areas. There is a clear trend in computer communications to apply fast and high bandwidth networking methods and elements. Their spread in the office environment is very promising and straightforward, but their direct application in the manufacturing environment needs some prior investigation. How will it affect the management and control tasks in manufacturing systems? Besides other effects, it will enable the widespread use of multimedia features, and the authors focus on that issue. After giving a bunch of application oriented discussion topics, an experimental pilot system is detailed which could be oriented in the future to investigate manufacturing system trials.","PeriodicalId":433593,"journal":{"name":"Proceedings 1997 IEEE International Workshop on Factory Communication Systems. WFCS'97","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115775743","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
Experience with formal methods implementing the PROFIBUS FMS and DP protocol for industrial applications 具有在工业应用中实现PROFIBUS FMS和DP协议的正式方法的经验
Proceedings 1997 IEEE International Workshop on Factory Communication Systems. WFCS'97 Pub Date : 1997-10-01 DOI: 10.1109/WFCS.1997.634310
A. Poschmann, J. Hahniche, P. Deicke, P. Neumann
{"title":"Experience with formal methods implementing the PROFIBUS FMS and DP protocol for industrial applications","authors":"A. Poschmann, J. Hahniche, P. Deicke, P. Neumann","doi":"10.1109/WFCS.1997.634310","DOIUrl":"https://doi.org/10.1109/WFCS.1997.634310","url":null,"abstract":"The paper presents our experience using the formal description technique Estelle for the protocol development cycle in the area of real time industrial communication systems. As a real world application, the PROFIBUS parts FMS and DP of the European fieldbus standard were completely implemented using formal models. These implementations are successfully used in industrial applications and embedded systems. Our development method, results, and experiences during the development process are discussed. A closed, tool based method is the overall aim concerning the development life cycle to support the requirement definition as well as the implementation of the product code with final testing. To meet these needs, our approach defines some assumptions and constraints using the syntactic and semantic model of the specification language Estelle, aspects of the modelling process concerning the architecture, handling data abstraction and encapsulation of the specification language vs. real time data flow in the product code implementation, synchronous vs. asynchronous communications to local interfaces (e.g. physical layer or partly data link layer ASIC) and dealing with special local events like timeouts and interrupts in the specification and in the real time execution environment. The paper discusses advantages and also critical points using the formal way of the protocol development cycle. In theory, it is quite clear that formal description techniques enhance quality. Therefore, we discuss this approach from the user's point of view.","PeriodicalId":433593,"journal":{"name":"Proceedings 1997 IEEE International Workshop on Factory Communication Systems. WFCS'97","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124246431","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
Response time guarantees for ATM-networked control systems atm联网控制系统的响应时间保证
Proceedings 1997 IEEE International Workshop on Factory Communication Systems. WFCS'97 Pub Date : 1997-10-01 DOI: 10.1109/WFCS.1997.634301
Hans Hansson, Mikael Sjödin
{"title":"Response time guarantees for ATM-networked control systems","authors":"Hans Hansson, Mikael Sjödin","doi":"10.1109/WFCS.1997.634301","DOIUrl":"https://doi.org/10.1109/WFCS.1997.634301","url":null,"abstract":"We present the Response-Time Analysis (RTA) method for providing real time guarantees in asynchronous transfer mode (ATM) communication networks, and evaluates its suitability for use in hard real time factory type environments. RTA provides an analysis of the network traffic which can be used by an admission control mechanism to determine if the timing requirements of a new connection can be guaranteed without violating the requirements of already admitted connections. This type of admission control is required by several multimedia and almost all real time control applications. RTA is based on traditional fixed priority/rate monotonic real time CPU schedulability analysis. This makes it possible to combine communication analysis with CPU schedulability analysis, thus allowing system designers to use the same technique for assessing the timely behaviour of the entire system, including both CPU and network scheduling. The only assumption RTA makes about the ATM network is that the switches should be equipped with prioritised output queues, something which is true for many commercial switches. The main focus of the paper is on evaluating RTA. In the evaluation we compare RTA with Weighted Fair Queueing (WFQ) and the Calculus of Network Delays (CND). WFQ is the currently most popular method for providing performance guarantees, and CND provides an alternative analysis for prioritised queueing. The comparison shows that RTA outperforms both WFQ and CND for a set of realistic traffic scenarios.","PeriodicalId":433593,"journal":{"name":"Proceedings 1997 IEEE International Workshop on Factory Communication Systems. WFCS'97","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127458824","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: 15
Low-layer quasi-agreed order broadcast over local bus 在本地总线上广播低级准协议命令
Proceedings 1997 IEEE International Workshop on Factory Communication Systems. WFCS'97 Pub Date : 1997-10-01 DOI: 10.1109/WFCS.1997.634281
J. Konorski
{"title":"Low-layer quasi-agreed order broadcast over local bus","authors":"J. Konorski","doi":"10.1109/WFCS.1997.634281","DOIUrl":"https://doi.org/10.1109/WFCS.1997.634281","url":null,"abstract":"Agreed order broadcast protocols are supposed to deliver messages in a group wide agreed total order. With large group sizes and a faulty communication environment (e.g., prone to reception misses), existing protocols can collapse due to imperfect synchronisation mechanisms. We propose and evaluate a MAC layer Jamming Protocol (JP), applicable in Ethernet type media, whereby a site jams an out of sequence message thus preventing all other sites from delivering it. The low layer approach yields higher group throughput at the price of introducing a practically negligible possibility of violating agreed order.","PeriodicalId":433593,"journal":{"name":"Proceedings 1997 IEEE International Workshop on Factory Communication Systems. WFCS'97","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116872098","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
Operating a robotized system through an Ethernet network 通过以太网络操作自动化系统
Proceedings 1997 IEEE International Workshop on Factory Communication Systems. WFCS'97 Pub Date : 1997-10-01 DOI: 10.1109/WFCS.1997.634309
S.F. Navarro, E. Ballester, J. Diaz, E. Vendrell, M. Mellado
{"title":"Operating a robotized system through an Ethernet network","authors":"S.F. Navarro, E. Ballester, J. Diaz, E. Vendrell, M. Mellado","doi":"10.1109/WFCS.1997.634309","DOIUrl":"https://doi.org/10.1109/WFCS.1997.634309","url":null,"abstract":"At the moment, the common implementation of local area networks allows working in a total communicative environment. Taking advantage of this fact, and the facility to establish communication with a robotized system, one logical step is to join both to get maximum performance. The integration of a robotized system with a local area network is presented. This implementation considers a LAN-robot link to allow: a higher freedom to set the factory layout, in order to improve quality of the working environment, and an enlargement in the access to a robotized system.","PeriodicalId":433593,"journal":{"name":"Proceedings 1997 IEEE International Workshop on Factory Communication Systems. WFCS'97","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116934135","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
Performance evaluation of an MMS/ATM implementation MMS/ATM实现的性能评估
Proceedings 1997 IEEE International Workshop on Factory Communication Systems. WFCS'97 Pub Date : 1997-10-01 DOI: 10.1109/WFCS.1997.634304
B. Maaref, S. Nasri, P. Sicard
{"title":"Performance evaluation of an MMS/ATM implementation","authors":"B. Maaref, S. Nasri, P. Sicard","doi":"10.1109/WFCS.1997.634304","DOIUrl":"https://doi.org/10.1109/WFCS.1997.634304","url":null,"abstract":"Combined use of hardware and software in end systems is an important aspect in providing high performance communication subsystems to be used in real time distributed systems. We present a system for industrial automation and process control called MMS-ATM. Our architecture is based on the ATM (Asynchronous Transfer Mode) protocol implemented in hardware and the MMS (Manufacturing Message Specification) application layer protocol implemented in software. We discuss the implementation structure of MMS-ATM and evaluate the performance of this hybrid hardware/software implementation.","PeriodicalId":433593,"journal":{"name":"Proceedings 1997 IEEE International Workshop on Factory Communication Systems. WFCS'97","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124548199","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
Demand side management in private homes by using LonWorks 使用LonWorks进行私人住宅的需求侧管理
Proceedings 1997 IEEE International Workshop on Factory Communication Systems. WFCS'97 Pub Date : 1997-10-01 DOI: 10.1109/WFCS.1997.634318
P. Palensky, D. Dietrich, R. Posta, H. Reiter
{"title":"Demand side management in private homes by using LonWorks","authors":"P. Palensky, D. Dietrich, R. Posta, H. Reiter","doi":"10.1109/WFCS.1997.634318","DOIUrl":"https://doi.org/10.1109/WFCS.1997.634318","url":null,"abstract":"The paper presents a system to distribute power consumption in private homes uniformly over time as well as to reduce total power consumption to meet the interests of the energy producers. We present autonomous and intelligent domestic appliances that communicate with each other. Every electrical device is supported by a built-in LonWorks-Node that incorporates distributed algorithms. The main objectives are to provide logical relations between the devices, and to coordinate the energy consumption policy. All this happens in an autonomous, distributed way without any interaction with the user. The paper elaborates four different algorithms and indicates strategies to save energy in global dimensions.","PeriodicalId":433593,"journal":{"name":"Proceedings 1997 IEEE International Workshop on Factory Communication Systems. WFCS'97","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125943961","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: 35
CANopen: configure and device testing CANopen:配置和设备测试
Proceedings 1997 IEEE International Workshop on Factory Communication Systems. WFCS'97 Pub Date : 1997-10-01 DOI: 10.1109/WFCS.1997.634322
M. Farsi, K. Ratcliff
{"title":"CANopen: configure and device testing","authors":"M. Farsi, K. Ratcliff","doi":"10.1109/WFCS.1997.634322","DOIUrl":"https://doi.org/10.1109/WFCS.1997.634322","url":null,"abstract":"The paper describes an European field bus communication standard developed during ESPRIT IV project 7302 and subsequently has become known as CANopen. CANopen Configure Device and Test (CDT) software has been developed by Newcastle University (UK) to facilitate the configuring and testing of CANopen devices. The CDT is further enhanced to perform conformance testing of I/O devices. To operate the software requires a PC running Windows and a CAN card supporting CANopen. It allows the use of any CANopen compliant object dictionaries to communicate with the device. Any object can be read or written, for both service data and process data communications. Synchronisation messages can be generated automatically, with real time display and control of synchronous data. Full CANopen network management services and life guarding are implemented and there is an object dictionary editing facility.","PeriodicalId":433593,"journal":{"name":"Proceedings 1997 IEEE International Workshop on Factory Communication Systems. WFCS'97","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114354477","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
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