共查询到18条相似文献,搜索用时 125 毫秒
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基于蓝牙技术的数控系统网络和远程服务功能研究 总被引:2,自引:0,他引:2
研究和试验了采用蓝牙无线技术和PC计算机通用网络软件pcAnywhere实现数控系统网络和远程服务功能的方法,并提供了试验结果。 相似文献
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移动电子商务的发展与支持技术研究 总被引:6,自引:0,他引:6
本文对移动电子商务中涉及的热点问题进行了论述;研究了移动电子商务的底层--无线网络,介绍了蓝牙技术、通用分组无线业务和移动IP技术;阐明了无线应用协议WAP的原理和体系结构,针对移动设备的安全技术和移动电子商务的应用领域,讨论了移动电子商务的发展前景。 相似文献
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薛延侠 《西安航空技术高等专科学校学报》2010,28(1)
无线个域网技术主要有红外技术、家庭射频、蓝牙、ZigBee、超带宽和射频识别等,分析了它们的主要特点、发展现状和应用领域,最后阐述了它们的融合发展趋势。 相似文献
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介绍了一种网络化条件下能够通用于多种设备的的自动控制系统.该系统采用了蓝牙技术、异构数据库集成技术、瘦终端技术和CORBA技术等无线技术和网络技术,实现了自动控制系统与生产设备无关的特性,具有了传统的自动控制系统所不具有的通用性和超前性.首先介绍了通用自动控制系统设计的大致结构和技术基础;然后介绍了系统的构建和众多优点,最后对系统广阔的应用前景作了展望. 相似文献
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采用ARM+Linux嵌入式系统构架,设计出一套智能家居综合接入与控制装置,覆盖了WiFi、zigbee网络、红外遥控接口。研究网络协议,构建了安全可靠接入Internet的WiFi网络,为智能家居的远距离操控提供基础。研究zigbee无线组网技术,构建了家居环境信息采集无线网络;研究红外编码与发射机制,实现了各类红外遥控器的编码学习、数码存储及发射功能;研究Android智能手机的软件设计技术,通过接入Internet与综合装置通信,实现家居环境信息及设备的远距离监测和操控。 相似文献
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基于GSM/GPRS的无线监控系统设计 总被引:1,自引:0,他引:1
介绍了以嵌入式监控终端、用户手机和远程监控中心计算机构建的无线监控系统的设计.着重论述了无线模块在嵌入式系统中的应用方法.介绍了通过无线模块发送和接收短消息以实现对现场设备的监控方法;分析了如何依靠无线模块经过GPRS网络与接入Internet的固定IP计算机建立连接并进行通讯.结果表明,在现有的移动通讯网络覆盖的区域,利用本系统可以完成对现场设备的在线数据采集、远程无线数据传输与监控.在露天场所、野外、移动作业环境或有线网络无法接入的地点建立数据采集与监控系统时,基于GSM/GPRS网络的嵌入式远程无线监控解决方案具有突出的优势. 相似文献
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《Air & Space Europe》2000,2(5):80-83
In the framework of the research project TUBSAT-N (Technical University of Berlin SATellite-Nano) it has been demonstrated that it is possible to achieve ultra low cost space access very quickly. TUBSAT-N and TUBSAT-N1 were launched as a satellite cluster in July 1998 with a convertible Russian military SS-23 SHTIL Rocket from a submarine. This project should prove that nanosatellite technology can be a good solution for a commercial ultra-low cost project. 相似文献
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This paper presents a new optical surface technology known as COUNTERFOIL. The COUNTERFOIL technology provides a means of covert information storage and is used as the basis for a range of security seals and labels. The technology has obtained Australian Government Endorsement (SCEC Endorsement) for use in high security applications. It provides a convenient, low cost means to determine authenticity and detect tampering or surreptitious access 相似文献
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Tetrahedral Robotics for Space Exploration 总被引:2,自引:0,他引:2
Curtis S. Brandt M. Bowers G. Brown G. Cheung C. Cooperider C. Desch M. Desch N. Dorband J. Gregory K. Lee K. Lunsford A. Minetto F. Truszkowski W. Wesenberg R. Vranish J. Abrahantes M. Clark P. Capon T. Weaker M. Watson R. Olivier P. Rilee M.L. 《Aerospace and Electronic Systems Magazine, IEEE》2007,22(6):22-30
A reconfigurable space filling robotic architecture has a wide range of possible applications. One of the more intriguing possibilities is mobility in very irregular and otherwise impassable terrain. NASA Goddard Space Flight Center is developing the third generation of its addressable reconfigurable technology (ART) tetrahedral robotics architecture. An ART-based variable geometry truss consisting of 12 tetrahedral elements made from 26 smart struts on a wireless network has been developed. The primary goal of this development is the demonstration of a new kind of robotic mobility that can provide access and articulation that complement existing capabilities. An initial set of gaits and other behaviors are being tested, and accommodations for payloads such as sensor and telemetry packages are being studied. Herein, we describe our experience with the ART tetrahedral robotics architecture and the improvements implemented in the third generation of this technology. Applications of these robots to space exploration and the tradeoffs involved with this architecture will be discussed. 相似文献
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周政坤 《沈阳航空工业学院学报》2005,22(6):42-44
在电子网络时代里,档案工作者正迎接着电子文件的挑战。把电子文件及其归档后形成的电子档案管理好并利用好,是档案工作者义不容辞的责任。论述了电子文件载体寿命与技术寿命的特点以及影响其寿命的因素,提出了收集、管理与利用电子文件的具体对策与措施。 相似文献
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通过WWW服务和数据库技术相结合的办法,可以构建一种三层客户端/服务器的体系结构,但是当用户通过INTERNET浏览大量数据库数据时,网络连接常因速度缓慢或因超时而中断。介绍了WWW数据库访问技术,通过对各种技术进行分析和比较,针对一个网站设计的需求,采用了ASP技术实现数据的分页传输。 相似文献
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NASA Langley Research Center (LaRC) began using the World Wide Web (WWW) in the summer of 1993, becoming the first NASA installation to provide a center-wide home page. This coincided with a reorganization of LaRC to provide a more concentrated focus on technology transfer to both aerospace and non-aerospace industry. Use of WWW and NCSA Mosaic not only provides automated information dissemination, but also allows for the implementation, evolution and integration of many technology transfer and technology awareness applications. This paper describes several of these innovative applications, including the on-line presentation of the entire Technology Opportunities Showcase (TOPS), an industrial partnering showcase that exists on the Web long after the actual 3-day event ended. The NASA Technical Report Server (NTRS) provides uniform access to many logically similar, yet physically distributed NASA report servers. WWW is also the foundation of the Langley Software Server (LSS), an experimental software distribution system which will distribute LaRC-developed software. In addition to the more formal technology distribution projects, WWW has been successful in connecting people with technologies and people with other people 相似文献
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一种适用于管理信息系统的访问控制策略 总被引:1,自引:0,他引:1
郑涛 《海军航空工程学院学报》2005,20(1):167-169
访问控制策略是管理信息系统安全的重要因素之一。RBAC用角色的概念把用户和权限联系起来,简化了访问控制策略的制定和实施,非常适合管理信息系统的授权管理。但它实现数据级的访问控制很难,因此文中提出了数据分片的思想,并给出了一个RBAC与数据分片相结合的访问控制策略。 相似文献