user-to-user circuit 中文意思是什麼
user-to-user circuit
解釋
用戶到用戶線路-
The traditional analog frequency - sweeping instrument, which mostly uses the lc circuit as the frequency oscillator, is more expensive, too much bigger and heavy to carry. it can only display the curve of amplitude - frequency, but ca n ' t used to measure the phase - frequency, and ca n ' t used to print the curve of frequency response characteristic either. it brings many discommodity to the user
傳統的模擬式掃頻儀大多是用lc電路構成掃頻振蕩器，它不僅價格昂貴，體積龐大，而且只能顯示幅頻特性曲線，不能得到相頻特性曲線，更不能列印被測網路的頻響曲線，給使用者帶來諸多不便。 -
Secondly, the composition and function of expander board is introduced, the paper describes a detail developing process of selecting component, design interface circuit, protract pcb with protel and design pci interface logic and user ' s logic. with ahdl and max + plus. in addition this paper discusses how to debug pci board, and give the simulation waveform and the result of debug. on the base of all functions is ture, this paper introduce the config registers and memory of bu - 61580, realize the interrupt function and communication based on mil - std - 1553b
首先分析了擴展板的組成、功能，對pci介面邏輯和擴展板的內部邏輯進行詳細設計，並根據其資源要求進行器件選擇，然後使用protel工具進行電路板的製作。另外，本文還介紹了擴展板的調試方法，給出了邏輯模擬波形和調試結果。在此基礎上，本文闡述了協議晶元的配置方法，實現了1553b通訊擴展板間的通訊及中斷功能，達到了開發技術指標。 -
Being master control part, user controller stores, manages, display and query user information ; as slave control part, sub - user controller calculates and temporarily stores power sent from measuring module ; measuring module measures electric energy by using power meter ' s special circuit which simplifies circuit design and connects or breaks up power supply circuit by relay ; in order to transmitting data fast and exactly, rs - 485 communication standard is adopts between user controller and sub - user controller
主控部分用戶控制模塊可存儲、管理、顯示和查詢用戶電能信息；從控部分子用戶控制模塊計算並暫存電能測量模塊輸出功率數據；電能計量模塊採用電度表專用厚膜電路hdb6進行電能計量，簡化了電路設計，同時還利用繼電器控制連接或斷開用戶的供電迴路；在主從部分間採用rs - 485通信標準實現數據快速、準確的傳輸。 -
Socket function mainly realizes setting up and initializing service unit socket, initializing service unit and service unit serial and so on. bind funcion primarily binds local address and port for the socket. listen function is to evaluate the max length of server ’ s listening queue. connect function and accept function set aside rate ahead, infrom user ’ s request of establishing virtual circuit to suna, cooperate with suna to establish the connection between client and server, return the result. we make use of three handshake with data protocol and virtual circuit mode, in this way, when we translate data, we can look up communication course according to virtual circuit number, at the same time, there aren ’ t source ip address and port, end ip address and port in the head of data package, the speed of translating data advances in a certain extent. send function and recv function is to send data collaborating with suna, and copy data from the receiving queue of socket to user ’ s buffer. close function cooperate
Socket （ ）函數實現創建、初始化服務元套接字，初始化服務元及服務元序列等。 bind （ ）函數為套接字綁定本地地址和埠號。 connect （ ）和accept （ ）函數主要是根據用戶要求預留帶寬，將用戶的建立虛電路請求轉達給服務元網路體系，協作服務元網路體系採用捎帶數據的三次握手協議建立虛電路，並告訴用戶處理結果，一方面，捎帶數據的三次握手協議在一定程度上可提高數據傳輸速度;另一方面，採用虛電路方式，使得數據通信可直接根據虛電路號查找相應的通信進程，而且數據包的包頭中省去了源ip地址、埠號和目的ip地址、埠號，提高了數據傳輸速率。 -
In this system, it is master - slave structure between pc and dsp. dsp transfers data to pc by adopting the dmac ( direct memory access controller ) in pc. the thesis dwells on every part of hardware circuit and main technology such as dsp, the transferring mode of dma ( direct memory access ), etc subsequently, it introduces the software design of the sampling system and user interface
該最小系統製作成高速數據採集卡，插入pc機的isa總線插槽中， pc機與dsp構成主從結構，系統中tms320f240dsp作為pc機的下位機，採用pc機內的dmac （ dma控制器）通過dma （直接存儲器存取）方式把採集的數據傳送到pc機進行處理。 -
A term applied to a storage medium that permits data to be removed, leaving the medium in a condition to receive new data. magnetic tape, for example, is " erasable " and paper tape is not. the term is also applied to a read - only memory ( integrated circuit ) that can be reprogrammed by the user
用來修飾說明某種存儲媒體，可以將其存儲的數據除去，以便存儲新的數據。例如磁帶是可擦除的，紙帶是不可擦除的。該術語也用於可重新編程的只讀存儲器（集成電路） 。 -
The term is also applied to a read - only memory ( integrated circuit ) that can be reprogrammed by the user
該術語也用於可重新編程的只讀存儲器（集成電路） 。 -
Service unit network architecture ( suna ) is a kind of network architecture based on service unit. suna is different of hiberarchy, it is concise, extensible and can be easy to be realized. this paper states the virtual circuit architecture prototype host based on suna, expatiates on collectivity design, module patition, the function which all modules provide with and the services for user about prototype host based on suna. the prototype host provides user with two kinds of data flow service, one is dependable data flow service which uses predigested slip window mechanism to guarantee the dependence and sequence of data flow, the other is undependable data flow service. to transfer data in network must pass ui, network communication protocol and physics network. ui is the bridge between the user and network communication protocol
服務元網路體系結構是一種基於服務元的網路體系結構，不同於層次結構，具有簡潔、可擴展和易實現的特點。本文論述了基於服務元網路體系結構的虛電路結構的原型主機，詳細闡述了原型主機的總體設計、模塊劃分、各個模塊實現的功能以及為用戶提供的服務。原型主機為用戶提供兩種數據流服務，一種是可靠的數據流服務，採用滑動窗口機制來保證數據流的可靠性和有序性;一種是不可靠的數據流服務。 -
The systemic design including hardware design and software design, is introduced in this paper. analyse the reconfigurable capability and give a concretely circuit and appearance design. we design the test program of instrument and two working model about on - line working and off - line working. it is expedient to operate by friendly user - machine interface
本文詳細的介紹了該儀器的整體設計（包括軟、硬體設計） ，分析了其重構性能，給出了該儀器的具體電路設計及外觀設計，系統的設計了該儀器工作的測試程序，並且設計了聯機和脫機兩種工作方式，均具有友好的人機界面，方便用戶的操作。 -
With the personal computer and its advantages of data analysis, data processing, data recording and interactive user interface, the implemented vi has features of simple circuit design, low - cost, powerful functions, friendly user interface and intuitive result displaying. the vi also accomplished functions of massive signal processing and recording, which are difficult to implement for general intelligent units
本設計充分利用了計算機的資源，使儀器的硬體電路簡單、成本低廉、軟體功能強大、界面友好，實現了智能化探傷儀難以實現的缺陷性質判斷的圖形化，並且利用計算機大存儲量的能力，實現了缺陷直接在計算機存儲等。 -
This paper sums the situations and trends of domestic and international engineering machinery firstly, discusses the demands and implements of intelligent and long - range monitoring and controlling, and constructs a three - layer model of the engineering machinery long - range monitorin and control system : the front unit control systems, the machine - mounted monitoring system and the long - range control center ; proposes a kind of structure of embedded system based on c / os - ; dissects the characteristics, structure, operation and schedule principle of c / os -, modified the kernel, and improves dependability of the schedule algorithm ; designs the hardware in detail : the microprocessor at91rm9200, the store unit, the serial interface, the human - computer interaction interface, the can bus control module, the debug interface and the reset circuit etc. ; on this basis, succeeds in transplanting c / os - to the system, sets up the operating system framework, designs the driver, sets up the institutional framework of upper user ' s application, provides the method and concrete application process of the graphical user interface module based on c / os -. the system designed in this paper, not only has the functions of local control, friendly human - computer interface, but also has various interfaces which make the system can be managed by the long - rang center
本文首先綜述了國內外工程機械行業發展的現狀和趨勢，闡明了實施工程機械智能化及遠程監控的意義和需求，並為此構建了工程機械遠程監控系統三層結構模型:前端單元控制系統、車載監控系統和遠程監控中心;提出了一種基於c / os -的嵌入式車載監控系統構建方案;深刻剖析了c / os -的特點、內核結構、運作機理、調度演算法，在此基礎上對其內核進行移植前的必要修改，並對其調度演算法進行了可靠性改進;對構成嵌入式系統硬體的各個主要部分:嵌入式微處理器at91rm9200 、存儲單元、串列介面、人機交互介面、 can總線控制模塊、調試介面以及復位電路等做了詳細的設計;在此基礎上，成功地將c / os -實時內核移植到本文研發的嵌入式硬體系統中，建立了車載監控系統的操作系統體系結構，編寫了該操作系統的底層硬體驅動程序，建立了上層用戶應用程序的組織結構，並給出了圖形用戶界面模塊化應用程序在c / os -操作系統上的建立方法和具體應用過程。 -
The charging current and period can be programmed by user to provide friendly interface. in order to enhance its efficiency, the cooperation capability between ic and current limited adapter has been reinforced in this circuit to overcome the problem of low efficiency of the linear charger
效率方面，本文採用由基準電壓源提供的2 . 8v基準電壓作為晶元的內部電源，增強了晶元與具有電流限制功能的電源（ cc / cv ）協作的能力，克服了線性充電器效率低的問題。 -
I has mainly discussed the sofeware and hardware of aribrary waveform generator controlled by the microcontroller in my with the control of the high proformance microcontroller - 80c196kc, this instrument builds up the main circuit adopting single tone and dac of ad9857. in my project, i. have designed some special circuits with the advanced method of eda ( electron design automation ) based on vhdl and cpld. it can produce standard waveforms such as sine, square, triangle, and generate aribrary waveform according to the user ' s demand, at the same time, it has the ability to produce the amplitude modulation signal based on the carrier of sine and the aribrary waveform
論文中主要對微機控制的任意波形發生器的軟硬體設計進行了相應的研究，該任意波形發生器以intel公司16位高性能單片機80c196kc作為控制器，分別利用了ad9857的單音頻模式和dac模式組成正弦波和任意波產生的電路，在硬體電路的設計中採用了先進的eda （電子設計自動化）技術，使用vhdl語言和可編程門陣列器件對一些特殊的電路進行了設計。 -
The portable infrared press instrument has the following characteristics : has small volume and weight and carry easily ; use a keyboard to input orders and display the corresponding information on the lcd display for the sake of the user ' s convenience ; has big data capacity and can collect 30 press measure instruments all the data which have stored for a week ; show the real - time date and time ; communicate through the infrared with speed of 2400kbps ; has the intrinsically safe circuit and can be safely used under coal mine
本文所研製出的紅外線壓力手抄器的主要特點是：體積小、重量輕、易於攜帶；使用鍵盤輸入命令，並在液晶顯示屏上給予相應的提示，極大地方便了使用者；數據容量較大，可一次採集30臺壓力測試儀一周內存儲的壓力數據；全日歷實時時鐘顯示；紅外數據通訊功能，傳輸速率為2400kbps ；本安設計，可安全的應用於煤礦井下。 -
Due to its special frame structure, bus access method and error - tolerance technology, can enjoys good reliability, flexibility and response time. can, gsm - sms ( short message service ) technology are used in amr ( automatic - meter - reading ) system, thanks to the opto - isolation circuit and software filtering algorithm, the amr system can be free of the serious disturbance in power station, which has won user ' s satisfaction
本課題「變電站自動化抄表系統」中，由於採用了抗干擾性好的can現場總線技術及現代移動通訊技術，並對脈沖信號採用光電隔離和信號整形技術，並採用獨特的軟體濾波手段，克服了變電站嚴重的電磁干擾對通訊和數據採集系統的影響，取得了令人滿意的效果。 -
It uses svf ( serial vector format ) files to describe the user ' s digital circuit, and makes the processor of embedded system explain svf files to configure the plds over the internet
文中利用符合工業標準的svf文件描述數字電路的配置信息，通過嵌入式系統解釋該文件完成對可編程器件的遠程配置。 -
With application and circuit gateways, all packets are addressed to a user - level application on a gateway that relays packets between two points
用應用軟體與線路入口時，所有的包都按地址送給入口上的用戶級應用程序，入口在兩點間轉送這些包。
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