process interface unit 中文意思是什麼
process interface unit
解釋
過程介面裝置-
Fieldbus is a kind of communication network which is a whole digitial communication multi _ embranchment data bus between intelligential field device and auto _ system. control system based on pcs ( fieldbus control system ) is a new kind of system which connect field control unit, field monitor unit, operation unit, communication interface uint with databus. lt integrates computer technology, communication technology and process cnotrol technology to adjust to demand of high standard productive control and enterprise management. lt developments and follows the advantage of traditional instrument control system and computer central control system and make up for their disadvantage so that it is applied in different industrial cnotrol area
現場總線是連接智能現場設備和自動化系統的數字式、雙向傳輸、多分支的通信網路。它是一種能支持雙向、多節點、總線式的全數字通信網路。基於現場總線技術的控制系統是一種新型的控制系統，它採用總線方式將現場控制單元、現場監視單元、操作站、通信介面單元連接起來，綜合了計算機技術、通信技術和過程式控制制技術，以適應現代高水平生產控制與企業管理的需要。 -
There is difference frequency measurement requirement for every part of pid regulating, difference between dynamic quality and static quality in response time and accuracy. according to these, it use the interrupt functions and high - speed counter of the simens s7 - 200 plc cpu226 basic unit and some peripheral circuit to measure frequency ; in software designed, the procedure frame of hydraulic - turbine governor and disperse process of parallel pid are analyzed, an improved pid algorithm is adopted to realize a pid regulation mode with variable structure and parameters ; the mechanical liquid - pressure system of the hydraulic - turbine governor is with electric - hydraulic converter unit of step motor. according to the drive character of five phase of response step motor, a variable frequency regulated voltage driver unit is designed in order to realize interface between plc and driver of step motor
本文利用s7 - 200plc自身的特點設計了頻率測量單元，根據pid調節各個環節的特點，以及調速器動態特性、靜態特性對頻率測量的實時性和精度要求的不同，利用s7 - 200plc基本單元中內置的高速計數器以及相應的外圍放大整形、分頻電路，實現了水輪發電機組頻率的測量；在軟體上，對微機調速器的整個程序框架、並聯pid的離散化過程進行了分析，選用改進的pid演算法實現了變參數、變結構的pid調節模式；調速器的機械液壓隨動系統具有步進電機電液轉換元件，採用五相反應式步進電機，根據其驅動特性設計了變頻調壓驅動器，實現plc與步進電機驅動器之間數字介面。 -
First of all, this paper introduces the process of transmission of data from satellites. cortex telemetry and telecommand is used to receive telemetry data. before receiving data, the digital modulation modes are recognized by a method of parallel judgement in order to tell cortex telemetry and telecommand unit to set the reception mode, and then by using cortex ’ s tcp / ip interface the remote reception is achieved
本文首先介紹了衛星傳輸信息的過程，然後使用cortex測控單元對遙測數據進行直接接收，在接收之前首先利用了平行判決法來實現數字調制方式的識別，以便控制cortex測控單元使用何種方式進行接收數據，實現了利用cortex測控單元的tcp / ip介面進行遠程接收。 -
Hse protocol released by fieldbus foundation is the key study of this paper. hse unit module design, hse communication stack interface design, hse communication stack software integration design and message process flow are introduced in detail in this paper
現場總線基金會發布的高速以太網協議是本文的研究重點，在此基礎上，本文對高速以太網協議進行了軟體設計和實現，包括高速以太網單元模塊的設計、 hse協議軟體的介面設計、 hse協議軟體的集成設計以及報文處理流程。 -
On the one hand of hardwar : first of all, the thesis introduces the interiror structure of pic18f8260 and its distinguishing with other singlechip ; secondly, having narrated the structure and performance of gsm communicate module - tc35i module and the hardware performance process of communications interface of gsm ; thirdly, having studied the drived principle and dynamic scanned circuit of led ’ s panel ; lastly, having put forward serial interface circuit which the application of system. on the other hand of software which have accomplished the running of hardware : in design, utilizing mscomm control to realize the serial communication between computer and cell phone, utilizing at command to realize the cell phone control and sms receiving and sending operation, the pdu ( protcol data unit )
設計上，利用mscomm控制項實現計算機與gsm模塊間的串口通信，使用at指令實現對gsm模塊的各種控制和簡訊的收發，分析發送和接收短消息的pdu （ protcoldataunit ）格式、簡訊內容、手機號碼、 smsc （短消息服務中心）號碼等;單片機與pc機之間的通信採用pic中c語言和c + +語言編程，以中斷方式實現pic18f8260與led的通信，同樣利用mscomm控制項從漢字字庫的提取點陣碼，最後顯示在led上。 -
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。
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