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嵌入式计算机源于60年代,是以用户不可见的(机箱级、插件级、芯片级)方式埋藏于用户应用设备之中的专用计算机,在日益激增的数量巨大的各种信息化应用产品中起着“核心控制”作用。这些信息化应用产品包括:VCR(录像机)、蜂窝电话、网络路由器与集线器、医疗仪器、视频游戏和图形终端、顶置盒、工业仪器仪表、控制装置、办公自动化的文件和打印服务器、通信交换机、数控系统、工业机器人、雷达、电子对抗、坦克、战机、战舰、各种家电产品等等所有产品中的智能部件。 相似文献
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叙述实时控制计算机系统的功能及工作原理和硬件组成。该系统充分利用嵌入式计算机的特点,实现了实时控制,实时信息处理和实时故障检测的功能 相似文献
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基于ARM的嵌入式计算机系统的低功耗设计与实现 总被引:1,自引:0,他引:1
嵌入式计算机系统被广泛应用于便携式和移动性较强的产品中,而这些产品的低功耗设计的目标是在满足用户对性能需求的前提下,尽可能降低系统的能耗,延长设备的待机时间[1].基于ARM处理器的嵌入式计算机系统主要通过低功耗微处理器选择、接口驱动电路的设计、电源供给电路设计、动态电源管理等来实现系统的低功耗.该系统已经在产品应用,系统性能稳定,功耗很小. 相似文献
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大腔体高密度高可靠陶瓷封装技术研究 总被引:1,自引:1,他引:0
文章对应用于航天计算机系统封装的大腔体高密度高可靠高温金属化陶瓷管壳,根据用户提出的特殊要求,从设计到工艺,较详细论述其研制过程、关键工艺、技术难点、以及与通常的DIP、CQFP、CLCC、CPGA等的不同之处,并指出今后需要努力的方向。 相似文献
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随着军事转型的不断深入,对军用计算机的需求越来越多。文中系统介绍了2008年高性能计算机在军事领域应用中的突出走势,详细介绍了多种军用软件取得的进展,指出嵌入式计算机、仿真计算机、加固式计算机及其软件都将对未来军事态势发展起着十分重要的作用。 相似文献
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随着信息技术的发展,计算机服务器系统在我国的得到了非常广泛的应用,小到中小企业,大到电力、国防、卫生等重点行业都离不开计算机服务器系统提供7*24小时不间断的工作。因此,一旦计算机服务器系统发生故障,就可能会带来巨大的经济损失。基于此,本文对计算机服务器系统的容错技术进行了探讨。 相似文献
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In this paper we propose a design of a dependable self-organizing and adaptive mixed-signal SoC. We introduce an Artificial Hormone System (AHS) as a general control mechanism, which addresses the goals of organic computing methodology. Regarding the coexistence of digital and analog components in SoCs, we developed two new AHS implementations, one pure analog approach and one mixed-signal approach. Besides the basics of the hormone based control mechanisms, especially for the analog domain, this paper adapts the AHS upon mixed-signal SoC and presents the evaluation of a completely simulated AHS-controlled SoC. This evaluation verifies the approaches including stability issues as well as upper timing bounds and shows the improvement achieved on the system reliability. We also state the advantages from the hormone system compared to other approaches, as well as the strong points of the different hormone systems to one another. 相似文献
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Pablo Díaz Miguel ngel Egido Frans Nieuwenhout 《Progress in Photovoltaics: Research and Applications》2007,15(3):245-264
Long‐term performance of PV stand‐alone systems is analysed in this work in terms of dependability. On one side, the quality of a PV system, the energy service supplied to the users, depends on the initial design and sizing and on the component ageing that progressively decreases the availability of supply on demand (energy reliability). On the other side, technical failures lead to system stoppage until repairing is performed (technical reliability), which is crucial in real rural electrification applications. All those factors are analysed together with the basis of an extended field, laboratory and bibliographic review work. Copyright © 2006 John Wiley & Sons, Ltd. 相似文献
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Dependability analysis is an important step in designing and analyzing safety computer systems and protection systems.Introducing multi-processor and virtual machine increases the system faults' complexity,diversity and dynamic,in particular for software-induced failures,with an impact on the overall dependability.Moreover,it is very different for safety system to operate successfully at any active phase,since there is a huge difference in failure rate between hardware-induced and softwareinduced failures.To handle these difficulties and achieve accurate dependability evaluation,consistently reflecting the construct it measures,a new formalism derived from dynamic fault graphs(DFG) is developed in this paper.DFG exploits the concept of system event as fault state sequences to represent dynamic behaviors,which allows us to execute probabilistic measures at each timestamp when change occurs.The approach automatically combines the reliability analysis with the system dynamics.In this paper,we describe how to use the proposed methodology drives to the overall system dependability analysis through the phases of modeling,structural discovery and probability analysis,which is also discussed using an example of a virtual computing system. 相似文献
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这些年以来,随着计算机发展越来越快,其应用也从单一的计算到各种数据的处理,计算机网络的覆盖范围越来越广泛了。这就给予人们现实中的工作,学习非常多的方便之处。但是,一件事情往往有两面性,计算机网络也难排除在外。特别是对于计算机数据库,以偶而遭受入侵攻击,就会造成许多数据的丢失,从而会导致用户受到相应的损失。因此,保证计算机数据库的安全性,是一件非常重要的事情。计算机数据库的入侵检测技术,是一种主动防御的技术,是一种能够阻止入侵的非常有效的一种技术。本文就相关的计算机数据库的入侵检测技术的相关事情进行探讨。 相似文献
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本文就计算机软件安全漏洞检测技术展开论述,针对于计算机软件安全漏洞的动态化检测以及静态化检测技术做以分析,并就格式化、竞争条件、缓冲区、随机性等方面的安全漏洞,探究了计算机软件安全漏洞检测技术的实际应用,以期为计算机软件安全提供保证,推进计算机软件安全漏洞检测技术的逐步完善。 相似文献