{"title":"Simulation and emulation of biomedical instrumentation systems using object-oriented-programming","authors":"D. Clark, R. Cockrum, E. Ibrahim, R.F. Smith","doi":"10.1109/WESCON.1994.403561","DOIUrl":"https://doi.org/10.1109/WESCON.1994.403561","url":null,"abstract":"Teaching Biomedical Instrumentation Systems has been a difficult task due to the high cost of equipment. This has been most acute for undergraduate programs. With the introduction of computers and object-oriented programming in teaching laboratories it is now possible to simulate and emulate these systems easily and economically. The authors describe an undergraduate engineering course in biomedical instrumentation where object-oriented programming is used. The course explains, develops, simulates, and emulates basic biomedical instrumentation systems such as Biopotential Amplifiers, Cardiovascular Measurement Systems, and Respiratory Measurement Systems.<<ETX>>","PeriodicalId":136567,"journal":{"name":"Proceedings of WESCON '94","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131690150","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}
{"title":"Industry acceptance of boundary scan","authors":"S. Hronik","doi":"10.1109/WESCON.1994.403545","DOIUrl":"https://doi.org/10.1109/WESCON.1994.403545","url":null,"abstract":"Boundary-scan has been a published standard since May 21, 1990. Since inception of the standard, several manufacturers have introduced boundary-scan methods and are actively building systems. In order to determine the success of boundary-scan in penetrating the marketplace, a survey was conducted which covered several key points. The survey was designed to determine the need for a test method like boundary-scan, to determine how well boundary-scan meets those needs, and to make projections on how well boundary-scan will develop in the future. Thirty three engineers were polled in the survey, with each representing a different company in the United States or Canada. All respondents were active in design work, component qualification, or system testing. While the sample size was small, trends were observed which indicated validity of the data. The results show that boundary-scan is entering segments of the testing arena, but acceptance is slow and not universal. The conditions examined include the following: 1) How important is system testing in the eyes of system manufacturers? Aspects of testing that were examined included success rates, cost of testing, and test methods used. 2) What are the testing needs of industry? How rapidly is the industry moving to fine pitch modules and components that are not easily tested with probing techniques? What are the failure mechanisms. 3) Does boundary-scan meet the testing needs? What are boundary scan shortcomings, cost issues, and testing effectiveness? 4) Is boundary-scan in the development plans of designers and test engineers?.<<ETX>>","PeriodicalId":136567,"journal":{"name":"Proceedings of WESCON '94","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124487432","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}
{"title":"Fuzzy logic protection circuit provides a flexible response in severe transient environments","authors":"T.F. Grill, B. Roy, J. Worden","doi":"10.1109/WESCON.1994.403619","DOIUrl":"https://doi.org/10.1109/WESCON.1994.403619","url":null,"abstract":"A power supply input protection circuit has been developed using fuzzy logic technology to guard against severe transient environments. The protection circuit incorporates active inrush current limiting and provides a flexible response to bus voltages under 22.5 VDC or over 30.0 VDC. Active series limiting of overvoltage transients allows the use of smaller transient suppressors and provides automatic recovery following severe transients. A decision, based on system knowledge in the form of rules, is made to allow the power supply to continue operating or to shut down until the transient condition is removed. Test results are presented for a 1.5 kW power supply subjected to high- and low-energy transients.<<ETX>>","PeriodicalId":136567,"journal":{"name":"Proceedings of WESCON '94","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129080036","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}
{"title":"Architectural aspects of power management and battery management in portable systems","authors":"R. Duley","doi":"10.1109/WESCON.1994.403585","DOIUrl":"https://doi.org/10.1109/WESCON.1994.403585","url":null,"abstract":"Portable computer designers are constantly being challenged with new technologies to obtain higher performance and longer battery life. This paper will discuss aspects of partitioning with battery management functions in portable computer systems to obtain extended battery life without sacrificing system performance. The system designer must consider different system architectural aspects when reviewing what features can be supported and still stay within the budgets for power consumption, space, weight, battery life, and cost.<<ETX>>","PeriodicalId":136567,"journal":{"name":"Proceedings of WESCON '94","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126538249","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}
{"title":"Practical considerations of VR [virtual reality]","authors":"P. Diefenbach","doi":"10.1109/WESCON.1994.403623","DOIUrl":"https://doi.org/10.1109/WESCON.1994.403623","url":null,"abstract":"As many technologies enter the public psyche they gain nebulous terms to describe and signal all encompassed systems. The term virtual reality (VR) has gained this status, and today this term conjures up visions of users with bulky head-mounted displays wearing a data-glove. Many computer packages claim to be VR systems as this term signals compliance with this \"new\" technology. Yet VR is not new and VR has no one definition. There are several considerations in creating or evaluating a system to determine its VR-ness. This paper will address these issues, particularly in the context of human simulation and interaction with VR systems.<<ETX>>","PeriodicalId":136567,"journal":{"name":"Proceedings of WESCON '94","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122299599","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}
{"title":"Design considerations for the power electronics of an electric vehicle propulsion inverter","authors":"J. Gallagher, D. Seals","doi":"10.1109/WESCON.1994.403629","DOIUrl":"https://doi.org/10.1109/WESCON.1994.403629","url":null,"abstract":"This paper describes some of the design considerations and tradeoffs that are involved in developing the power electronics for an electric vehicle propulsion inverter. A review of topology, voltage, current and switching frequency requirements is presented. Guidelines for the design of: gate drivers, current loops, snubbers, auxiliary power supplies and protection circuits are given. Finally, loss calculations and thermal design methods are suggested.<<ETX>>","PeriodicalId":136567,"journal":{"name":"Proceedings of WESCON '94","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114228804","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}
{"title":"Using 1149.1 for multi-drop and hierarchical system testing","authors":"G. O'Donnell","doi":"10.1109/WESCON.1994.403541","DOIUrl":"https://doi.org/10.1109/WESCON.1994.403541","url":null,"abstract":"The IEEE 1149.1 boundary scan test standard has been growing in usage since its approval in 1991. As applications developed primarily for board level manufacturing test grow, an awareness and need for using this test infrastructure for system level test and integration has grown. This paper examines the methods of integrating test from design to field service, explore methods for building system level test, and propose some requirements for support and development of these test methods.<<ETX>>","PeriodicalId":136567,"journal":{"name":"Proceedings of WESCON '94","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116229860","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}
{"title":"Performance of lithium-ion battery systems","authors":"J.A. Carcone","doi":"10.1109/WESCON.1994.403593","DOIUrl":"https://doi.org/10.1109/WESCON.1994.403593","url":null,"abstract":"Lithium cobalt oxide is used for the positive electrode. Sanyo's unique highly crystallized graphite as a negative electrode material provides the lithium ion batteries with a high energy density with excellent overall performance characteristics compared to other battery systems.<<ETX>>","PeriodicalId":136567,"journal":{"name":"Proceedings of WESCON '94","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121219756","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}
{"title":"Fibre Channel and ATM: the physical layers","authors":"J. Quam","doi":"10.1109/WESCON.1994.403647","DOIUrl":"https://doi.org/10.1109/WESCON.1994.403647","url":null,"abstract":"As more high bandwidth applications develop, system designers are looking for networks to deliver them higher performance than the ones in service today. Future applications will require higher bandwidth on both local and wide area networks. Two emerging standards are starting to be deployed that will address this problem by offering a road map of data transmission rates into the gigabaud range. Fibre Channel was the first to emerge, and was initially developed as a high-speed point to point interface for linking processors and their peripherals. As the standard evolved, it included different interconnect topologies that can make it into a network as well. Asynchronous Transfer Mode (ATM) is the other standard that is currently evolving. ATM has a goal of being the complete end-to-end public network, but is currently in the very early development stages. It promises to offer the user the ability to send a wide variety of applications, with \"on-demand\" bandwidth, and potentially seamless interconnect between LAN and WAN boundaries. This paper briefly overviews both of these standards with an emphasis on their physical layers, and then compares them.<<ETX>>","PeriodicalId":136567,"journal":{"name":"Proceedings of WESCON '94","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121366170","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}
{"title":"Fibre channel-a \"CHAN\" for all reasons","authors":"R. Cummings","doi":"10.1109/WESCON.1994.403520","DOIUrl":"https://doi.org/10.1109/WESCON.1994.403520","url":null,"abstract":"Fibre Channel is not only the first of a family of interfaces, it is the first of a new type of interface. It represents the melding of what have been until now two quite distinct cultures - that of \"channels\" and \"networks\". As the first \"Chan\", or Channel Network, Fibre Channel provides the support required by both channel command sets and network protocols. In doing this, it answers the needs of next-generation system designers for more input/output bandwidth in less space, consuming less power, and with much less cable clutter. This paper first describes the features of Fibre Channel, and then illustrates the exceptional scalability and flexibility which Fibre Channel brings to a wide variety of system architectures and application environments.<<ETX>>","PeriodicalId":136567,"journal":{"name":"Proceedings of WESCON '94","volume":"230 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114045682","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}