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基于Markov过程的硬/软件综合系统可靠性分析 被引量:17
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作者 于敏 何正友 钱清泉 《电子学报》 EI CAS CSCD 北大核心 2010年第2期473-479,共7页
现代大型监控系统通常是一个复杂的硬/软件综合系统,其可靠性分析对于系统的设计、评估具有重要意义.综合考虑硬件、软件特点以及两者之间的相互作用关系,提出一种基于Markov过程的综合系统可靠性分析模型,模型中将系统失效分为硬件失... 现代大型监控系统通常是一个复杂的硬/软件综合系统,其可靠性分析对于系统的设计、评估具有重要意义.综合考虑硬件、软件特点以及两者之间的相互作用关系,提出一种基于Markov过程的综合系统可靠性分析模型,模型中将系统失效分为硬件失效、软件失效与硬/软件结合失效.实际应用中,由于系统的状态数较大,提出利用循环网络方法对Markov状态转移方程进行求解,从而方便地得到系统处于各状态的瞬时概率与稳态概率.通过分析硬/软件综合系统可靠度、可用度与系统可靠性参数之间的关系,指出硬/软件结合失效将影响系统可用度,忽略硬/软件结合失效将导致可靠性估计值偏离实际值. 展开更多
关键词 /软件综合系统 MARKOV过程 件失效 软件失效 /软件结合失效 可靠度 可用度
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硬-软件系统冗余结构最优化研究 被引量:4
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作者 刘云 温晓霓 赵玮 《西安电子科技大学学报》 EI CAS CSCD 北大核心 2005年第2期304-306,326,共4页
基于硬件系统和软件系统中的容错冗余技术,提出了在一定约束条件下,使得硬 软件系统可靠度达到最大的最优系统冗余结构模型,并给出了模型的求解方法.
关键词 -软件系统可靠性 冗余技术 N版本程序设计
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一种软件可靠性定量评估的方法 被引量:3
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作者 龙瑜 《现代电子技术》 2006年第18期113-115,共3页
系统软件可靠性研究是当代科技前沿课题之一,是衡量软件质量最重要的指标,软件可靠性模型是软件可靠性定量评估的技术基础。他有2大类:可靠性预计模型和可靠性结构模型。分析2类模型中具有代表性的Nelson模型和硬软件复合系统结构模型,... 系统软件可靠性研究是当代科技前沿课题之一,是衡量软件质量最重要的指标,软件可靠性模型是软件可靠性定量评估的技术基础。他有2大类:可靠性预计模型和可靠性结构模型。分析2类模型中具有代表性的Nelson模型和硬软件复合系统结构模型,提出一种新的软件可靠性定量评估方法。该方法利用Nelson模型精确测定系统软件各模块的可靠性替代硬软件复合系统结构模型中的经验数据,解决了由于经验不足而无法应用硬软件复合系统结构模型的问题。该评估方法成功应用于科技部科技型中小企业技术创新基金资助项目“电参数分析管理系统”的软件开发中。 展开更多
关键词 软件可靠性 软件可靠性定量评估 Nelson模型 -软件复合系统结构模型
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混联混合动力车辆整车控制器设计 被引量:3
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作者 左义和 项昌乐 闫清东 《微计算机信息》 2010年第11期1-2,49,共3页
设计了基于MC9S12XDP512微控制器的混联式混合动力汽车整车控制器(HCU)的硬软件系统,设计了相应的外围模块电路,并进行了整车控制策略软件的设计以及构建了基于VisualBasic的监控软件程序。实验表明:开发的HCU硬软件工作可靠,能够满足... 设计了基于MC9S12XDP512微控制器的混联式混合动力汽车整车控制器(HCU)的硬软件系统,设计了相应的外围模块电路,并进行了整车控制策略软件的设计以及构建了基于VisualBasic的监控软件程序。实验表明:开发的HCU硬软件工作可靠,能够满足整车控制的要求。 展开更多
关键词 混合动力汽车 硬软件系统 CAN总线 监控软件
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高校校园网站建设的关键技术 被引量:1
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作者 俞宙 《兵工自动化》 2006年第11期57-58,共2页
高校网站建设按照性价比最优的原则选择服务器,优选含CPU、硬盘、机箱的网站服务器,及含WEB、数据库、开发工具的软件系统。网站结构设计包括栏目层次结构、目录结构及提供良好导航作用的链接结构。页面设计包括风格定位、页面布局、线... 高校网站建设按照性价比最优的原则选择服务器,优选含CPU、硬盘、机箱的网站服务器,及含WEB、数据库、开发工具的软件系统。网站结构设计包括栏目层次结构、目录结构及提供良好导航作用的链接结构。页面设计包括风格定位、页面布局、线条和形状的选择、色彩处理,重点为首页设计。 展开更多
关键词 校园网 网站建设 硬软件系统 网页设计
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校园网络组建技术 被引量:1
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作者 赵香莲 《科技资讯》 2013年第1期17-17,共1页
本文介绍了组建一个校园网络所需要的硬件和软件设备以及保证其正常运行的网络安全技术。
关键词 校园网络 硬软件系统 网络安全
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Design and Study of a High Security ATM System
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作者 范瑞霞 赵则祥 张俊 《Journal of Beijing Institute of Technology》 EI CAS 2002年第1期41-44,共4页
Based on the characteristics of ATM system and the special requirement of financial transaction, an overall design of hardware and software structure of ATM was made. For software structure, the pattern of modules and... Based on the characteristics of ATM system and the special requirement of financial transaction, an overall design of hardware and software structure of ATM was made. For software structure, the pattern of modules and table? drive is adopted to realize the security of financial transaction and the diagnosis of communication fault. A new method, which is based on the application layer, transport layer and network layer, is used for diagnosing communication fault. Supporting both magnetic card and IC card, the system has been put into use in real financial systems, and has brought about both economic and social effects. 展开更多
关键词 ATM IC card SECURITY fault diagnosis
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Hardware Optimization Technique of Full-Customized HW/SW Co-Design 被引量:1
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作者 汤磊 魏少军 仇玉林 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2002年第6期637-644,共8页
The hardware optimization technique of mono similarity system generation is presented based on hardware/software(HW/SW) co design.First,the coarse structure of sub graphs' matching based on full customized HW... The hardware optimization technique of mono similarity system generation is presented based on hardware/software(HW/SW) co design.First,the coarse structure of sub graphs' matching based on full customized HW/SW co design is put forward.Then,a universal sub graphs' combination method is discussed.Next,a more advanced vertexes' compression algorithm based on sub graphs' combination method is discussed with great emphasis.Experiments are done successfully with perfect results verifying all the formulas and the methods above. 展开更多
关键词 HW/SW co design CDFG mono similarity system sub graph compound graph COMBINE usage degree cost
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Research on the Drunk Driving Intelligent Test System Based onμC/OS- II
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作者 Bingguo Liu Yun Han Bing Zhao 《International Journal of Technology Management》 2013年第2期56-59,共4页
The article design the hardware system scheme using STM32F407 as the control core circuit, and designed the software structure of the system and application layer multi task and priority based on transplanted μ C/OS ... The article design the hardware system scheme using STM32F407 as the control core circuit, and designed the software structure of the system and application layer multi task and priority based on transplanted μ C/OS operating system. Aimed at that the traditional drunk driving detection system has low sensitivity and unable to distinguish diffuse alcohol sigmal interference. For accurate identification of pilot and crew alcohol concentration, the paper puts forward a driving intelligent identification wine system based on embedded μC/OS- II. The experimental results show that the detection sensitivity of the system has high accuracy rate, effectively prevent the purpose for the prevention of drunk driving, drunk driving has very good practical value. 展开更多
关键词 EMBEDDED alcohol sensor multi task II C/OS STM32F407
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Automatic Migration of a Software Task to Hardware Component in MPSoC Systems
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作者 Kamel Smiri Abdelhafidh Ben Fadhel +1 位作者 Abderrazak Jemai Ahmed Chiheb Ammari 《Computer Technology and Application》 2011年第12期931-938,共8页
The authors will focus on the study of the design of Multiprocessor Systems on Chip (MPSoC), specifically in the context of improving the performance of applications located on the MPSoC architecture. The objective ... The authors will focus on the study of the design of Multiprocessor Systems on Chip (MPSoC), specifically in the context of improving the performance of applications located on the MPSoC architecture. The objective of this research is to study the problems of transition from a pure software implementation for an embodiment admitting one or more hardware components and to develop a methodology for automatic generation of migration of a software task into a hardware component in MPSoC. The transformation of a software task into a hardware task led to many changes, hardware part (connection, the requirement of an interrupt controller...), software part (at least one task, I/O (I/O), synchronization...) and an architectural point of view, the remarkable aspects of data storage. The experiment is done on the MJPEG decoder to illustrate the effectiveness of the authors' tool for automatic generation of migration. 展开更多
关键词 CO-DESIGN decoder motion-JPEG transaction accurate automatic generation material component.
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Analysis on the Promotion of Computer Intelligent Office System
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作者 ZHONG Juan LAI Xiaotao 《International English Education Research》 2014年第5期102-104,共3页
Based on the present condition of computer hardware and software system, office automation has been basically implemented in most companies. From a long-term perspective, the future office system also needs to be grad... Based on the present condition of computer hardware and software system, office automation has been basically implemented in most companies. From a long-term perspective, the future office system also needs to be gradually upgraded with the development of technology. In this paper, the role of office automation is expounded first, and then the application model of computer intelligent office system is studied, and finally the matters needing attention in the process of companies to promote intelligent office system are analyzed. It is hoped that this paper can provide inspiration and help for further study. 展开更多
关键词 Computer Intelligent Office Systems PROMOTION ANALYSIS
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Accelerator Control System and Its Progress 被引量:8
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作者 赵籍九 《Chinese Physics C》 SCIE CAS CSCD 北大核心 2008年第z1期139-141,共3页
Currently accelerator control systems adopt distribution architecture and are developed with integration tools,such as EPICS,TANGO and SCADA.The digital controller based on FPGA,DSP is widely used in accelerator contr... Currently accelerator control systems adopt distribution architecture and are developed with integration tools,such as EPICS,TANGO and SCADA.The digital controller based on FPGA,DSP is widely used in accelerator controls and embedded EPICS IOC is a hot point.On the software side,laboratories have built their software develop- ment environments and the open sources Eclips,Abeans serve software development too.The high availability research is a challenge in the control world.The paper describes accelerator controls and progress of correlative technologies. 展开更多
关键词 accelerator control system integration hardware and software high availability
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闹钟革命:用创意开启新的一天
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作者 王振家 《光彩》 2011年第10期52-53,共2页
还在为一大早从床上爬起而懊恼不已?还在为刺耳的闹钟铃声痛苦不堪?如果床头放一台人性化的闹钟是不是心情大好?如果清晨被一个陌生的声音叫醒会不会非常有趣?当人类革了闹钟的命,早起也开始美妙起来。如果你拥有一只智能手机,那么手机... 还在为一大早从床上爬起而懊恼不已?还在为刺耳的闹钟铃声痛苦不堪?如果床头放一台人性化的闹钟是不是心情大好?如果清晨被一个陌生的声音叫醒会不会非常有趣?当人类革了闹钟的命,早起也开始美妙起来。如果你拥有一只智能手机,那么手机自带的闹钟将成为首选。不过手机总有不给力的时候,比如电量耗尽或软件崩溃,你就束手无策了。那么对于那些时尚前卫又爱睡懒觉的家伙,有没有其他的选择呢?如今新一代闹钟通过社交网络、人脸识别等技术来叫醒梦中人。 展开更多
关键词 闹钟 智能手机 用户 手机号码 声音 社交 机器人 服务平台 任务表 硬软件系统
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