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王雪 《无线电技术(上海)》2009,(1):20-26
PCI总线是PC主机最常见的总线,基于PCI总线形成的Compact PCI和PXI总线广泛地应用在仪器和自动化领域。PCI总线测试卡的接口设计变得越来越重要。本文主要介绍PCI专用接口电路PCI9052的功能,并应用在测试板卡上,实现我们所需的信号采集功能。 相似文献
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针对无人机视频传输设备接口兼容能力差、编码速率高的现状,设计了兼容高清多媒体接口(High Definition Multimedia Interface,HDMI)、串行数字接口(Serial Digital Interface,SDI)、复合同步视频广播信号(Composite Video Broadcast Signal,CVBS)三种接口的低码率视频传输系统。系统以Hi3519为核心,采用H. 265的方式编码。在接口兼容方面,通过搭配不同的视频接口芯片,兼容多种视频输入接口;在编码效率方面,同时压缩两路1080p60视频仅需3. 2 Mb/s的压缩码率。相比采用H. 264编码方式、需要视频接口转换器的方案,采用一片主处理器和多种视频接口芯片的方案具有低成本、低功耗、小体积的优点,更适用于无人机。通过搭建无线链路测试了系统的视频传输性能,结果表明,系统连接可靠、易于操作,可以实现实时、稳定的传输。 相似文献
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基于1553B总线的接口设计与实现 总被引:8,自引:3,他引:5
在深入研究MIL STD 1553B军用数据总线协议及其接口技术的基础上,设计并研制了MIL STD 1553B总线通用接口,该接口自带微处理器与可编程本地总线接口,通过编程能选择不同1553B终端模式能适合多种本地总线。测试结果表明,该通用接口具有较高的可靠性,实际应用效果良好。 相似文献
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基于LXI技术的网络化卫星测试系统设计 总被引:1,自引:0,他引:1
LXI总线技术应用于卫星测试系统,可以很好地解决分布式测试、远程测试和异构测试系统融合等问题.首先介绍了LXI总线技术的特点以及相对其他总线的优势,然后提出新一代基于LXI总线技术的卫星测试系统体系结构,从通用、互换、兼容等方面考虑进行了整个卫星测试系统的方案设计. 相似文献
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本文主要展示了集成电路测试系统软件的基本功能及其核心部分的实现方法。先介绍了集成电路测试系统硬件的建模方法,然后在硬件建模的基础上讲述了集成电路软件的结构及设计方法。着重介绍了流程图测试程序转化为文本测试程序的方法以及对文本测试程序的编译方法。用户只需要根据测试流程编写流程图即可以实现测试程序的编写,实现对IC的测试,提高了开发效率。该软件系统具有和硬件系统低耦合性,当向集成电路测试系统添加删改硬件时,不需要修改太多的软件内容即可以正常工作,通用性较好。 相似文献
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This article describes a new approach for synthesizing a cost-efficient self-test hardware for a given set of deterministic test pattern sequences. To minimize the test hardware effort instead of all the test sequences, only a very small subset will be selected such that a simple generation of all necessary test sequences will be ensured. This procedure drastically decreases the storage requirements (about 80%) and therefore distinctly reduces the necessary test hardware overhead. Experimental results on the ISCAS-S-benchmarks emphasize the efficiency of our approach.This work is supported by the ESPRIT project 6855 (LINK). 相似文献
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This article presents a novel approach to telecom system design that links hardware structural testing to system diagnostics software. Issues related to access of the hardware test features in the system are discussed. Linking the built-in self-test to diagnostic software reduces software complexity while increasing diagnostic accuracy. Furthermore, the use of structural test features in a routine diagnostic test permits subcritical faults to be detected and recorded in nonvolatile memory, thus facilitating failure analysis. It can then be seen that the superior test coverage, fault resolution, and flexibility that access to hardware test features gives, will be beneficial in improving overall system quality and reliability 相似文献
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三维集成电路(3DIC)的出现需要具备自动测试设备开发能力才能解决这些结构带来的挑战。在符合以下条件的解决方案中找到了这种能力:提供多时钟域、每个3DIC层粒状硬件移植、以及功能强大的测试语言来控制此硬件和协作软件开发环境;在这种环境下,各层的测试开发团队可紧密合作,为迅速生产做好准备。Advantest引进了每个引脚时钟域、多端口硬件、并发测试框架、协议感知以及smarTest程序管理器,可有效解决3DIC的测试挑战。它们可使生产解决方案达到开发团队所需的粒度。 相似文献
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《Proceedings of the IEEE. Institute of Electrical and Electronics Engineers》1973,61(11):1570-1574
Software implementation for automatic test systems controlled by minicomputers can be a costly and time-consuming process. A procedure for implementing software which tends to minimize costs and avoid delays caused by unexpected problems is described. The procedure consists of completely defining the test system functions and performing a series of hardware versus software tradeoffs during the design and implementation process. The purpose of the tradeoffs is to determine the least costly method of implementing tester functions by either hardware, software, or some combination of hardware and software. Delays caused by unexpected problems are reduced by including hardware and software debugging aids which shorten the time to validate the tester system functions. An example of implementing an automatic test system in accordance with these procedures is provided. 相似文献