数据总线

A memory address consists of binary data being output on an appropriate bus which we call the address bus.

一个存储器地址是由输出到适宜的总线上的二进制数据所组成。这个总线我们称为地址总线。

An adapter that converts between the timing and protocol requirements of an intelligent device's memory bus and those of an I/O bus or network.

能够在智能设备的存储器总线和I/O总线之间实现定时信号和协议的转换工作的适配器类型（不同总线上的数据的定时和传输协议各有自己的定义和要求）。

On the other hand, Control Area Network is good at resist interfere, and because of its simple connection and do not need master address, so CAN is widely used in many fields, such as automotive, medical device and mechanism.

目前通过单片机把CAN总线转换成串行总线或USB总线结合PC机进行数据采集分析已经广泛应用。

In order to transmit multi-channel data simutaneously on the monacable,TDM technique is adoped in the system design.

在仪器总线上采用特殊的码进行数据传输，使得仪器总线既能供电又能传输数据。

The holistic design of the system and resolved the designs of software and hardware based on VXI bus are put forward according to the demand of test system. The hardware and software is designed, including the formation and design of hardware system, visual instrument software architecture, program design for instrument driver, high speed real-time data collection. In the dynamic test program, the idea of"software is instrument"was applied to meet the diverse test demands. Last, it is proposed that the VXI test system be developed to more totalization and networked. The basic theory of system identification was introduced briefly at first. The principle of spectrum analysis system identification based on Wiener-Hopf equation was expatiated. and the questions in applying Peusdo Random signal as spectrum analysis methods stimulate signal was studied, The generation principle of the peusdo random signal is researched, the characteristic of peusdo random are analyzed from time domain and frequency domain, the inverse repeat peusdo random signal is brought forward to make up the shortage of ordinary peusdo random signal. And a new chaos genetic algorithmis presented to solve the unprecise problem of the traditional method. In the servo valve dynamic characteristic test system, the spectrum analysis methods was applied successfully, the servo valve dynamic characteristic could be acquired rapidly and exactly, the test results were analyzed and the ameliorate methods were brought forward at last.

结合航天某集团液压测试中心测试系统的需求，提出了基于VXI总线的液压测试系统的整体设计方案，完成了测试系统的硬件设计与软件设计，包括硬件系统构成与设计、虚拟仪器软件结构、仪器驱动程序设计、高速同步实时数据采集等内容；以伺服阀动态特性测试为例设计了测试模块，该模块体现了VXI总线仪器软件开发所倡导的"虚拟仪器"的思想，以软件的灵活应用满足了不同的测试需求；结合自动测试系统的发展，研究了VXI测试系统与网络技术结合，实现各种软硬件资源共享，进一步提高设备及数据的利用率和系统的扩展性，使自动测试向综合化、网络化方向发展；研究了伪随机信号作为谱分析法辨识的激励信号时存在的问题，讨论了伪随机信号的产生机理，从频域和时域分析了伪随机信号的性质及其应用，提出了用逆重复伪随机信号弥补了普通伪随机信号的不足，并以混沌遗传算法对逆重复伪随机信号产生过程中的参数进行优化，可以更合理而不是凭经验产生需要的逆重复伪随机信号。

We have studied data structure and transfer flow of SCCB bus, USB bus and wireless interface for CMOS image sensor OV7648 produced by Omnivision Technologies which is the main part of pill endoscope.

以药丸内窥镜的主要器件CMOS图像传感器OV7648为例，分析了SCCB总线、USB总线及无线接口的数据结构和传输流程，介绍了利用上述总线接口技术研制药丸内窥镜，取得较好效果的概况。

The holistic design of the system and resolved the designs of software and hardware based on VXI bus are put forward according to the demand of test system. The hardware and software is designed, including the formation and design of hardware system, visual instrument software architecture, program design for instrument driver, high speed real-time data collection. In the dynamic test program, the idea of"software is instrument"was applied to meet the diverse test demands. Last, it is proposed that the VXI test system be developed to more totalization and networked. The basic theory of system identification was introduced briefly at first. The principle of spectrum analysis system identification based on Wiener-Hopf equation was expatiated. and the questions in applying Peusdo Random signal as spectrum analysis methods stimulate signal was studied, The generation principle of the peusdo random signal is researched, the characteristic of peusdo random are analyzed from time domain and frequency domain, the inverse repeat peusdo random signal is brought forward to make up the shortage of ordinary peusdo random signal. And a new chaos genetic algorithmis presented to solve the unprecise problem of the traditional method. In the servo valve dynamic characteristic test system, the spectrum analysis methods was applied successfully, the servo valve dynamic characteristic could be acquired rapidly and exactly, the test results were analyzed and the ameliorate methods were brought forward at last.

结合航天某集团液压测试中心测试系统的需求，提出了基于VXI总线的液压测试系统的整体设计方案，完成了测试系统的硬件设计与软件设计，包括硬件系统构成与设计、虚拟仪器软件结构、仪器驱动程序设计、高速同步实时数据采集等内容；以伺服阀动态特性测试为例设计了测试模块，该模块体现了VXI总线仪器软件开发所倡导的&虚拟仪器&的思想，以软件的灵活应用满足了不同的测试需求；结合自动测试系统的发展，研究了VXI测试系统与网络技术结合，实现各种软硬件资源共享，进一步提高设备及数据的利用率和系统的扩展性，使自动测试向综合化、网络化方向发展；研究了伪随机信号作为谱分析法辨识的激励信号时存在的问题，讨论了伪随机信号的产生机理，从频域和时域分析了伪随机信号的性质及其应用，提出了用逆重复伪随机信号弥补了普通伪随机信号的不足，并以混沌遗传算法对逆重复伪随机信号产生过程中的参数进行优化，可以更合理而不是凭经验产生需要的逆重复伪随机信号。

The composition and structure features of the avionic bus are introduced.The classes of the message and the formats of the data are analysed.The metho..

介绍了航电总线的组成及其结构特点，分析了其消息类型及数据格式，重点介绍了航电总线数据处理软件的设计方法，包括ICD文件的组织建立及程序设计方法。

CAN Bus was applied in this study on REMS as the main method of datatransferring, on the basis of which the data acquisition of elevator state was realized.

本文将现场总线应用于电梯远程监控系统中，并将 CAN 总线作为数据采集模块的主要手段，利用其优良的性能，实现了对电梯状态数据的无损失采集与传输。

The Lightweight Directory Access Protocol server organization was used to share metadata of the information resource. Resource supervisor, data extractor and news main line were realized by object buffer pool, multithreading and news main line. The complex structure of rockbottom shielded by system engine and the XML technology was unified to solve problems of multi-template demonstration and sharing information alternately. The information share in Internet environment between the different application systems has been realized effectively.

利用轻型目录服务器组织共享信息资源的元数据，运用对象缓冲池、多线程和消息总线等技术实现资源管理器、数据提取器和消息总线，运用系统引擎屏蔽底层的复杂结构，结合XML技术解决共享信息的交互和多模板显示问题，有效地实现了Internet环境下不同的应用系统之间的信息的共享。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。