Because of the autonomy, mobility and communicativeness of agent, the transaction is very efficient, especially for large-scale distributed database systems.

由于Agent具有自治性456久久影院一区二区、移動性和通信性免费能直接看黄的网站视频直接看，使得事務(wù)的執(zhí)行效率更高人人人人人人人人操人人人人人人人人，尤其適用于大規(guī)模的分布式數(shù)據(jù)庫系統(tǒng)中。

In order to improve the modernization and convenience of communication network,the given design and key applied technologies of management system based on GIS,which is about long-distance communication trunk transfer network,take advantage of vector maps and dynamic data exchange of GIS.

為提高通信網(wǎng)管理的現(xiàn)代化和易用性精品久久网视频，利用GIS系統(tǒng)的矢量地圖和屬性數(shù)據(jù)動態(tài)交互的優(yōu)勢xxxxxcom，給出了基于GIS的長途通信干線傳輸網(wǎng)絡(luò)管理信息系統(tǒng)的設(shè)計(jì)方案及其關(guān)鍵的實(shí)現(xiàn)技術(shù)，從而很好的解決了長途通信干線網(wǎng)絡(luò)資源的地域性和空間性難以描述的問題亚洲另类图区，大大增強(qiáng)了系統(tǒng)的操作性和信息表現(xiàn)能力亚洲精品国产精品乱码不卡√。

Firstly, the characteristics of CAN bus are analyzed and it's reliability、expeditiousness and flexibility are tested. A communication network of substation automation system constructed on CAN bus is presented and confirmed. Secondly, the dissertation discusses the main structure of substation automation system, as well as the content and request of substation digital communication. According to this, it gives the project of constructing the substation CAN communication network and the communication protocol. And according to different requests of power system, it makes research and tests of the calculation of the communication parameters in the network. Communication manager is the key to communication network based on CAN bus.

論文首先分析了CAN總線的特性色哟哟在线播放高清视频观看，對其可靠性成年网站在线视频网站、實(shí)時性思热在线视频精品免费观看、靈活性進(jìn)行了實(shí)踐驗(yàn)證又长又大又粗的日皮视频，確定了用CAN總線來構(gòu)建變電站綜合自動化系統(tǒng)數(shù)據(jù)通信網(wǎng)絡(luò)的可行性，并在對變電站綜合自動化系統(tǒng)的結(jié)構(gòu)及數(shù)據(jù)通信的內(nèi)容和要求做了研究和分析的基礎(chǔ)上提出了基于CAN總線的變電站綜合自動化數(shù)據(jù)通信網(wǎng)絡(luò)的構(gòu)建方案高清无码视频在线观看的，編制了相應(yīng)的基于CAN總線的變電站綜合自動化系統(tǒng)通信協(xié)議亚洲图片小说，同時針對電力系統(tǒng)的不同要求，對CAN總線通信網(wǎng)絡(luò)中通信參數(shù)的計(jì)算進(jìn)行了研究和驗(yàn)證在线黄黄自慰。

In order to investigate the variation of controllability and observability affected by network scheduling,the model of scheduling for Networked Control System is established,which has communication constraint on its input and output channel.Utilizing communication sequence to express the scheduling of channel,the model can be transformed into discrete-time switch system.Under static scheduling,using the theory of recursive invariant subspace and its character,a necessary and sufficient condition of NC...

為了研究網(wǎng)絡(luò)調(diào)度對能控性與能觀性的影響黄片高清一区国产，對輸入、輸出通道都存在通信約束的網(wǎng)絡(luò)控制系統(tǒng)的調(diào)度進(jìn)行建模人人看人人摸人人操人人色；利用通信序列表示通道的調(diào)度情況有色有爽，最終將模型轉(zhuǎn)化為離散切換系統(tǒng)；在靜態(tài)調(diào)度下很黄AAAAAAAAA片，利用循環(huán)不變子空間理論及其相關(guān)的性質(zhì)人人插人人操人人奸，給出了網(wǎng)絡(luò)控制系統(tǒng)能控性、能觀性成立的充要條件一级A级黄色网站，并給出了原有控制系統(tǒng)與經(jīng)網(wǎng)絡(luò)靜態(tài)調(diào)度后的系統(tǒng)之間能控性黄页黄色网站、能觀性的關(guān)系；最后用仿真實(shí)例說明了所提結(jié)論的正確性欧美日韩亚洲一区在线观看不卡。

The network based on the ARM and the TCP/IP stack of uClinux provides the on-line GIS mo rnito ring system w ith stable communications and interchangeability. The ARM kernel in the embedded system p rovides a stable on2line monito ring system w ith real2time p rocessing capability and extendability.

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The eCAN module in the signal processor TMS2812 is introduced. Its correspondence partial hardware and the software design method with the CAN bus between correspondence is given. The OPC server is used for host, slave computer I/O driver, which has enhanced the ability of the scene intelligence measuring appliance computation complexity and system real-time communication.

詳細(xì)介紹TMS2812信號處理器的eCAN模塊以及其與CAN總線之間的通信ekwei.com，并給出其通信部分硬件和軟件的設(shè)計(jì)方法，采用OPC服務(wù)器為上三级网站硬插、下位機(jī)的I/O驅(qū)動程序影音在线资源，滿足了現(xiàn)場智能儀表的計(jì)算復(fù)雜性和系統(tǒng)通信的時實(shí)性在线观看国产综合日韩AV。

At the same time, on the base of analysis of the present situation, the development trend and the leading edge technology, the necessity and feasibility about the exploitation of the full hydraulic bulldozer"s sate monitoring and fault diagnosis system is given; According to the structure, working feature and working environment, it works out system schema and system composition; The system is divided into display module, communication module and fault diagnosis module by means of block design, the implementation method and key parameter are also given; In light of the features of the full hydraulic bulldozer, the state monitoring and fault diagnosis platform composed of controller RC6-9 and display DI2/10 is designed based on CAN-Bus and the hardware design is completed; It lists the measured values and state of monitored parameters which should be real-time displayed in monitoring module as well as the data which will be transmitted; Furthermore, On the base of the study of, it gives 34 kinds of constant faults" diagnosis methods; Using BODAS software and DPS software, it compile the program code of the controller and the displayer; At last, this paper design and make the simulation test device of control system of construction machinery, through the experiment, the realizability, the categoricalness, the reliability, the stability and real-time are tested, in addition, the improved methods are given.

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The requirement of real time sex that line of make a present of protects pair of communication quickly is relatively inferior , because this is OK ,the consideration uses low cost but the wireless communication technology with real time wronger sex .

饋線快速保護(hù)對通信的實(shí)時性要求相對較低中文字幕在现观看，因此可以考慮采用低成本但實(shí)時性較差的無線通信技術(shù)无码不花钱的污网站在线观看。

A method for the calculation of the ground potentials when the telecommunication equipment and other ground pipes buried metal pipes or metal sheathes of cables are influenced by the resistive coupling is suggested .

分析了層式土壤情況下強(qiáng)電系統(tǒng)與通信系統(tǒng)間的阻性耦合特性，給出了通信設(shè)備及其它地下金屬管線或埋電纜的金屬屏蔽體遭受阻性耦合影響時的地電位計(jì)算公式十八禁www。

It not only provides lower computation and communication, but also message confidentiality, authentication, unforgeability, non-repudiation, resisitance of malicious verifiers cheating others and so on, thus it satisfies the request of group communication and has great practical value and application prospect for the restriction of storage and computation developed hardware.

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