織機(jī)的集散控制系統(tǒng)與開(kāi)發(fā)——基于RS-485計(jì)算機(jī)通信

電氣自動(dòng)化論文編號(hào):ZD597 論文字?jǐn)?shù):19901,頁(yè)數(shù):41，有外文翻譯，原理圖，

 
 目  錄
 第1章 織機(jī)集散控制系統(tǒng)概述 3
 1.1 集散控制系統(tǒng)的發(fā)展歷史 3
 1.2 集散控制系統(tǒng)的基本結(jié)構(gòu) 5
 1.3 集散控制系統(tǒng)的特點(diǎn) 6
 第2章  本次設(shè)計(jì)的詳細(xì)論述 8
 2.1 織機(jī)參數(shù)采集方案 8
 2.2 數(shù)據(jù)通信傳輸標(biāo)準(zhǔn)選擇 9
 第3章 硬件關(guān)鍵技術(shù)分析 12
 3.1 本次設(shè)計(jì)的背景及要實(shí)現(xiàn)的功能 12
 3.2 RS-232標(biāo)準(zhǔn)介紹 13
 3.3 RS-485串行接口標(biāo)準(zhǔn) 15
 3.4 終端節(jié)點(diǎn)模塊設(shè)計(jì) 18
 3.5 PC機(jī)485通信接口電路電路設(shè)計(jì) 18
 3.6 RS-485的網(wǎng)絡(luò)安裝注意要點(diǎn) 18
 3.7 RS-485傳輸線上匹配的一些說(shuō)明 19
 3.8 RS-485的接地問(wèn)題 20
 3.9 RS-485的網(wǎng)絡(luò)失效保護(hù) 22
 3.10 RS-485的瞬態(tài)保護(hù) 22
第4章  系統(tǒng)軟件設(shè)計(jì) 25
 4.1 通信協(xié)議 25
 4.2 PC端軟件設(shè)計(jì) 25
 4.3 單片機(jī)通信節(jié)點(diǎn)軟件設(shè)計(jì) 26
第5章 結(jié)束語(yǔ) 35
參考文獻(xiàn) 36
致  謝 37

摘  要
 本次設(shè)計(jì)的目的就是為了設(shè)計(jì)一套織機(jī)生產(chǎn)的檢測(cè)與管理系統(tǒng)。系統(tǒng)的功能包括用單片機(jī)采集車間織機(jī)的參數(shù)。通過(guò)數(shù)據(jù)通信系統(tǒng)把這些參數(shù)傳輸給上位機(jī)。上位機(jī)通過(guò)管理軟件對(duì)這些參數(shù)進(jìn)行分析處理，并在計(jì)算機(jī)上加以顯示，生成報(bào)表、打印等。整個(gè)系統(tǒng)大體分為兩部分：
 織機(jī)參數(shù)采集及控制部分。
 數(shù)據(jù)通信傳輸部分。
 這兩部分分別由兩個(gè)同學(xué)設(shè)計(jì)完成，我主要做的是第二部分，即數(shù)據(jù)的傳輸部分。
 在本次設(shè)計(jì)中，傳輸數(shù)據(jù)的接口主要用的是RS-485，在實(shí)際工業(yè)應(yīng)用中，使用RS-485通信還是很經(jīng)濟(jì)的，它不僅傳輸距離遠(yuǎn)，最遠(yuǎn)是1200m以上，而且抗干擾能力強(qiáng)，只是在遠(yuǎn)距離傳輸時(shí)傳輸速率不是很理想，但仍然可以滿足工業(yè)應(yīng)用的要求。
 本論文基本完成了通信電路的硬件設(shè)計(jì)，軟件設(shè)計(jì)給出了流程圖和一些基本的編程。
 
 關(guān)鍵詞：RS-485，RS-232，串行通信，單片機(jī)
Abstract
The design is intended to design a production of the Loom detection and management system. The function of the system including the use of SCM Acquisition workshop loom parameters. Through data communication system to transfer these parameters to the host computer. PC management software through the analysis of these parameters and on the computer for display, generate reports, such as printing. The whole system can be divided into two parts:
1. Loom parameters and control of the acquisition.
2. Data communications transmission parts.
These two parts by two students completed the design, I mainly do is the second part, that is, the data transmission part.
In this design, data transmission interface is mainly used in RS-485, in practical industrial applications, the use of RS-485 communication is very economic, transmission distance is not only far, far more than the 1200 m, and anti-jamming Strong, but in the long-distance transmission, transfer rate is not very satisfactory, but still able to meet the requirements of industrial applications.
The basic thesis completed a circuit of communication hardware design, software design is a flow chart and some basic programming.

Key words: RS-485, RS-232, serial communications, SCM