modem communication system 中文意思是什麼

modem communication system 解釋
調制解調制通信系統
  • modem : n. 【無線電】數據機。vt. 【計算機】通過數據機向…發送電子郵件。vi. 用數據機聯通。
  • communication : n. 1. 通訊，通知；交換；信息；書信，口信，通報。2. 傳達，傳授；傳播；傳染。3. 交通，交通機關；聯系，連絡（設備）。4. 【宗教】接受聖餐。
  • system : n 1 體系，系統；分類法；組織；設備，裝置。2 方式；方法；作業方法。3 制度；主義。4 次序，規律。5 ...
  1. The system uses the embedded microprocessor s3c44b0x to control the sensor to gather water data, then processes, saves and displays them. at the same time it waits to be connected with pc at the control center, receives command - string, then uses modem to send the corresponding data with predefined communication protocol to pc through pstn

    測點通過嵌入式微處理器s3c44box控制傳感器採集水位數據，處理后保存並顯示；同時等待與控制中心的pc機建立連接，並根據接收的命令將相應的數據按照預先約定的通信協議，通過modem經公用電話網傳送到控制中心。
  2. In that mainly including communication work mode, project argumentation of system, performance analyses and type choosing of communication transmitter - receiver and the design of antenna system, etc. in chapter 3, coding mode of msk and gmsk and the hardware circulation realization of modem are discussed in detail

    在第二章里，介紹無線電通信系統總體設計，按通信系統組成，逐項進行計算，主要包括通訊工作方式和體制的方案論證，通訊電臺性能分析、選型、參數，以及天線系統的論證等。在第三章里，詳細論述msk和gmsk編碼方式，以及用fx909實現數據機的硬體電路。
  3. In order to dispose data at monitoring field ; pc is adopted as local master, which constructs the second level monitoring system. its function is data processing, and this data are useful f or local relative department the third level monitoring system is composed of communication unit, modem and pstn

    在現場為了進一步處理數據，採用pc機作為上位機進一步數據處理，組成第二級智能監測系統，它的功能完成顯示列印，歸檔，供本地有關部門作為分析依據。
  4. ( 2 ) resolute correlatively key technical problems, such as : embedded modem, embedded tcp / ip protocol, embedded webserver, gateway rg mode, lan inside network communication protocol, physical interface technology, total system miniaturization design and so on

    （ 2 ）解決相關關鍵技術難點，主要包括：嵌入式modem 、嵌入式tcp / ip協議棧、嵌入式webserver 、家居網關rg模型、局域網內部網路通信協議、物理層介面技術、智能應用終端改造途徑、整個系統小型化設計等。
  5. Firstly, the airborne electromechanical system, the development of bus protocol, power line channel and power system are described in the dissertation ; secondly, the algorithm of qpsk and root raised cosin are discussed ; thirdly, the designation of the hardware and software of the modem board, based on qpsk, built up with dsp and cpld are given. the high - speed data transporting card of airborne electromechanical communication system, which is based on plc, are put forward in our country

    本文介紹了飛機電力線載波數據通信系統的結構，並對低壓電力線的通道特性進行了分析；對qpsk調制演算法及均方根升餘弦低通濾波演算法進行了詳細論證；設計出基於qpsk的調制解調模塊，並在此基礎上，研製出以dsp和cpld為最小系統的調制解調硬體電路板，開發了調制解調模塊電路板的應用軟體程序。
  6. 2. we completed the sms sending and receiving through etpro - 201ai gprs modem ( in language c, under linux ) and realized the communication between mobile phone and home control system according to the self - established house control protocol. 3

    基於無線通信的家居控制系統把人們日常所用的通信工具作為家居控制系統的移動終端，使人們隨時隨地可以控制、查詢家庭狀況，拓展了人們的生活空間。
  7. In the dissertation, modem technology of the airborne electromechanical communication system based on plc is studied and the research has pratical value to improve the modernization of aeronautic equipments in our country

    本課題研究飛機電力線載波數據通信調制解調技術，本課題的研究對推動我國航空裝備現代化具有實用價值。
  8. Considering the requirement of communication network, a local area computer communication system of plc based on usb interface was given after analyzing the application model of plc. then after theoretical analysis and digital simulation, the plc modem and the computer interface models were designed. the design of software about the two models was also finished

    本文首先介紹了電力線通信技術在國內外的研究概況，分析了電力線載波通道的傳輸特性，討論了適合於電力線通信的擴頻載波通信方式，然後結合通信網路的要求，在分析電力線通信應用模式的基礎上，提出了一種基於usb介面的室內計算機電力線通信方案，進行了理論上的分析和數字模擬，設計了電力線modem模塊和計算機介面模塊，編制了相應的軟體程序，並對軟體進行了測試分析。
  9. Plc, robot and cad / cam are called the three major pillars in the modem factory automation. plc, as the head of the three, has become the leading basic automatic equipment in the field of the industry control in the early 1980s " but as a matter of fact, plc being with the lack of friendly man machine interface, rnakes no close relationship between human and machineometimes it even can not be promoted and applied in some fields aiming at the situation mat those imported products are too expensive while domestic products are of rare famous brands, a plc man - machine interface - plc monitor is developedthis paper systemically introduces the developing procedure for the whole system, including how to design hardware and software system. especially emphasizing plc communication protocol. real time message accessing, lcd controller instruction set, definition of data construction for message & tag screens and how to display thern, assignment of internal resource of cpuealization in software among plc & manitor, file format defining a nd download of user data, etcplc monitor will compensate some weakpoints of plc, and extend the application rangeimultanneously enhance the performance of plc and increase the attached value of mechanical machines, undoubtedly it will see hight market prospect

    針對人機界面進口產品的高昂價格和國產品牌稀少的這一現狀，研製開發了一種plc人機界面? plc監控器。本文系統地介紹了整個系統的開發過程，包括硬體系統、軟體系統的設計及實現，重點介紹了plc通信協議，監控器的基本工作原理以及期望實現的功能，監控器電源電路、 sram存儲器掉電保護電路、 cpu監控器電路、按鍵輸入電路的設計及按鍵狀態的讀入，時鐘信息的設定與讀取， cpu液晶顯示器指令系統，信息畫面及標簽數據結構的定義及顯示方法， cpu內部資源的分配，監控器與plc通信的軟體實現，文件格式的定義以及畫面數據的下載等。 plc監控器彌補了plc一些方面的不足，可以擴大plc的應用范圍，提升機械設備的檔次，增加設備的附加價值，具有一定的市場前景。
  10. The article consists of three parts mainly : the first part has described the method of detecting the faint signal, mainly include : detection technique of faint signal, principle of the optical fibre sensor, the little lose effects when optic fibre little curved, and the research of the stress sensor of optical fibre. the second part emphasizes on the design of the intelligent photoelectricity system, mainly tells the design of the circuit to process the faint photoelectricity signal, details the software and hardware design of intelligent photoelectricity system made of single chip microcontroller, led, man - machine interface, communication interface, etc. the third part is the network communication of the detection system, details the technology of single chip microcontroller how to group the network, and the communication between single the chip microcontroller system and the modem, and how to realize the data between the field and computer central exchanged through the existing public phone network

    文章主要分為三部分：第一部分論述了微小信號的檢測方法，主要包括微小信號的檢測技術、光纖傳感器的原理、光纖微彎損耗效應及光纖應力傳感器的研製；第二部分重點講述了智能光電檢測系統的研製，主要講述了微弱光電信號調理電路的設計及由前（后）向通道、單片機、 led 、人機介面、通信介面等組成的智能光電系統的軟硬體的具體設計；第三部分為檢測系統的網路通信部分，具體闡述了單片機系統間的組網技術、單片機和modem之間的通信及通過現有的公用電話網路實現遠程監控的技術，實現現場檢測系統與橋梁測控中心的數據交換。
  11. This system use the floater style sensor, mechanical encoder to get water - level signal, and use the at89c51 single chip system to transform the signal into water - level data, use modem through pstn to transmit data for a long - distance, and designed a information management software system hi the irrigation works bureau information center for communication and data management. the structure of the system was discussed in the thesis

    該系統使用浮子式傳感器、機械式編碼器獲取水位信號，利用at89c51單片機系統採集水位數據（簡稱：下位機系統） ，採用數據機、通過公共電話網（ pstn ）遠程傳輸數據，並在泰興市水務局信息中心通過主控計算機（簡稱：上位機）進行通信及信息系統管理。
  12. Studied the technology of communication in gps vehicle tracking system and sms ( short message service ), and presents a method using wavecom wmod2b modem to realize transfer of navigation data

    文章的最後研究了車載監控系統中數據通信的方式和短消息通信的實現，以及短消息通信的實時性問題。
  13. This paper mainly discusses the design principles and chief techniques of a digital accessing system for power - line communication net ( plcn ). the technology of low bit rate speech compression high - speed modem based on plcn adaptive equalization to the channel anti - jamming and anti - fading are applied in this system. so speech tele - control data and tele - protection signals can be transmitted high quality in the band - limited channel

    該系統綜合應用了低比特率語音信號壓縮編碼技術、基於電力通信網的高速調制解調技術、信號傳輸的通道自適應均衡技術和抗干擾、抗衰減技術，可在帶限通道中高質量的傳輸語音、遠動數據和遠方保護等信號，具有較高的整體性能。
  14. Combining with advanced science and technology such as modem computer network technology, database management system and modem communication technology etc, the reservoir dispatching automatization system has developed from the indispensable application system such as water inspecting system, flood forecasting system, reservoir dispatching and water information querying system etc into an integrated functioning system used for the dispatching of water power stations. using the management information system, database management system, geographic infonnation system, optimization technology, statistics etc. this paper with the project background of the three gorges cascade dispatching of reservoirs, bring forward the plan of dispatching automation system of three gorges cascade reservoirs. this project have been adopted in the three gorges project

    本文應用信息管理系統、數據庫管理系統，地理信息系統、最優化技術、統計學等方面的理論和知識，以滿足三峽工程梯級水庫調度的需要為前提，提出了三峽工程梯級水庫調度自動化系統的方案結構，該方案已被三峽工程的建設所采納，同時，在水情遙測系統的通信組網方式上，本文提出的inmarsat - c與pstn聯合組網的通信方式，在我國水電站的水情測報系統中，首次在葛洲壩項目中成功地應用，並且該方式也將應用於三峽水庫調度自動化系統。
  15. The desigh kernal is the communication controllor between electrical meter rs232 output port and gprs modem, software system of central station communication server and network solution

    設計的核心是電表採集器的rs232輸出介面與gprsmodem之間的通信控制器、中心站通信服務器的軟體系統以及組網方案。
  16. On - line observation system based on modem long - distance communication technology

    遠程通信技術的在線監測系統
  17. Automatic train protect system has several functions in train automatic protection ; decentralized automatic train control system has a remarkable ability in autonomous decentralization ; while advanced train administration system integrates modem communication technology, makes the train to detect the location and the approaching distance of other trains by using its own wireless communication

    研究了軌道交通列車剎車系統能有效防止列車正面沖撞的原理；分析了軌道交通列車自動保護系統具有列車自動保護的諸多功能；論證了軌道交通列車分散式自動控制系統的功能結構與技術特點。
  18. Firstly, the paper compares v. 90, modem, xdsl, isdn in their characters, difficulties, management and costs. finally, we choose to construct the h. 320 multi - media communication system based on n - isdn. secondly, in the theoretical part of the paper, the basic theory of h. 320 multi - media communication is introduced, such as the compression of video and audio data, h. 320 stack protocol and especially introduced the theory, relative protocol and the technique of access to the net of n - isdn

    本文針對銅線接入技術應用的基礎和現狀，對v . 90 、 modem 、 xdsl 、 isdn等接入方式的技術特點、接入難度、運行管理和經濟性等方面進行對比分析，結合接入的具體環境，通信需求和經濟性等方面的特點，重點闡述了n ? isdn接入方案的可行性和「基於n ? isdn接入的h . 320多媒體通信系統」的實現方案。
  19. The research in software radio is not more than ten years, but has made a great many fruits, but it is too little to set up an integrated theory system, and software radio includes many areas such as modern communication system ( which includes modem source / channel encoding and decoding, equalization, encrypt and decrypt and so on ), wideband antenna theory, digital signal process, microelectronics, computer and so on. this thesis mainly does research for modem in modem communication

    軟體無線電經過不到10年的研究，盡管取得了很多成果，但是對于建立一套完整的理論體系來說，還遠遠不夠，況且軟體無線電涉及的領域多、面廣、發展快，如現代通信理論（含調制解調、信源通道編解碼、均衡、加密解密等） 、寬帶天線理論、數字信號處理、微電子、計算機等。
  20. The modem communication aesthetics is an open subject system with dynamic generating nature integrally constructed by three inter - complementing and inter - operating categories of returning life, aesthetic generation and aesthetic comprehensive thinking

    當代傳播美學整體上是由回歸生命、審美生成、審美綜合思維三組范疇互補互動共同構成的一個開放的和富於動態生成性的學科體系。
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