共查询到18条相似文献,搜索用时 156 毫秒
1.
设计的城市污水处理控制系统以ARM920T处理器S3C2410X为核心,并根据污水实时处理的性能要求,设计硬件电路模块,完成了模数转换电路,串行接口、用户接口,存储系统设计和基本的外围电路硬件电路系统的设计。并对实时嵌入式操作系统μCOS-Ⅱ进行移植,使系统具备了执行多任务的能力。利用嵌入式实时系统的优势,实现了多任务间通信,解决了系统的不断开发、维护困难这一弊病。同时,还在μCOS-Ⅱ系统的基础上,移植了嵌入式图形界面μC/GUI并设计用户界面。 相似文献
2.
3.
本文介绍了一种自动指纹识别算法在嵌入式系统上的实现方案。详细介绍了系统各部分的组成,包括系统的硬件设计和软件设计。针对图像处理应用在嵌入式系统上实现困难,本文提出了一种行之有效的解决方案。因此本文对其它做嵌入式系统设计的设计人员而言具有有效的指导作用。 相似文献
4.
5.
BIOS是连接计算机操作系统和硬件的桥梁,BIOS管理功能在很大程度上决定了主板或整机性能优越与否。文章主要介绍了BIOS的类型及功能,分析了如何通过BIOS常用参数优化设置来提升计算机的系统性能,为相关技术人员提供了借鉴资料。 相似文献
6.
为了掌握化工等环境苛刻的系统的运行情况并且加以控制,自动监控系统是必须的。该文在硬件方面,以PIC18F458单片机为核心的嵌入式系统为例给出了一般的硬件构架。该结构在充分利用片上资源的基础上,充分考虑了系统的扩展以及远程监控;在软件方面,为了满足测量要求,提高测量精度,采用了软测量的方法。文中介绍了软测量的建模方法,并以神经网络为例给出了数据建模方法。 相似文献
7.
网络化信息系统中,数据的安全是一个重要话题。章从网络的硬件系统,操作系统,数据系统及应用软件几方面阐述了数据安全的具体措施。 相似文献
8.
9.
电机车受电弓监控系统的设计 总被引:1,自引:0,他引:1
为保证电力机车的安全运行,需要实时监测机车供电装置并进行智能判断,故障出现时能自动采取相应的措施,为此设计了受电弓监控系统,该系统包括硬件组成、软件设计,并对传感器检测原理、看门狗电路、视频切换电路及通信电路进行了应用研究,最后对如何提高系统的可靠性和该系统的实际意义进行了讨论。 相似文献
10.
阐述了系统硬件的电气原理及电路的设计思路和参数选择,讨论了硬件系统的工作过程,建立了测试阻力参数和跑合试验参数的数学模型,给出了测试仪软件系统及数据处理的总体结构,并对主要应用程序进行了设计。 相似文献
11.
12.
13.
14.
Microprocessors are being incorporated into an increasingly wide range of products. However, many of the companies that manufacture such products are not effectively managing software development for these embedded systems. Despite the current focus on concurrent engineering and cross-functional teams, software engineering is often poorly integrated with the rest of the product development effort. The result is usually a costly delay in the product's introduction to the market. Tomlinson G. Rauscher and Preston G. Smith describe several practices that have proved helpful for accelerating the development of products that incorporate embedded software. Managerial and economic opportunities for accelerating development of hardware-software systems involve planning for dramatic growth in products that include embedded software, cultivating in-house software knowledge, recognizing the financial effects of project decisions, and measuring project progress. Improving time to market requires hiring and developing software engineering staff and managers with the requisite knowledge of the application, ensuring that they understand the techniques for specifying requirements and design, and providing them with clear guidelines for evaluating the trade-offs between project duration, project cost, and product performance. Progress should be measured in terms of the number of components completed, rather than the number of lines of code that are written. During the development process, emphasis should be placed on managing the scheduling links between hardware and software development, obtaining user feedback about the system as early as possible, and using a flexible, ongoing review process. Development groups should establish software requirements and design parameters before they start coding, and testing should commence early in the system design process. By creating a working prototype of the user interface, developers can obtain user feedback and thereby sharpen the design specification. Effective, timely software development requires focusing greater energy and resources on development of the requirements specification. By expending this effort in the first phase of a project, the development team can minimize its use of the time-consuming code-and-debug approach to software development. In addition to breaking down a complex system into understandable pieces, a modular design supports efforts to accelerate product development. With a modular design, work on various modules can be assigned concurrently to relatively independent teams. A modular design facilitates testing of the product as well as reuse of software that was developed and deployed in previous projects. 相似文献
15.
16.
17.
18.
在FPGA实验教学和课程设计中,逻辑分析仪是最重要的调试工具。但由于高校经费紧张,难以配置齐全设备,而且逻辑分析仪I/O引脚引出困难,引脚数量有限,连线复杂,对内部信号的获取和分析也较困难。为此介绍一种SignalTapⅡ嵌入式逻辑分析仪,它成本低廉,升级方便,能对所有内部信号和外部引脚信号进行探测。通过对电路进行模块化的分析,合理设置触发条件,实现更有效、更准确的电路调试和排错。最后以PS2键盘接口电路的FPGA设计为例,阐明建立、配置和运行SignalTapⅡ的一些具体方法和步骤。 相似文献