【正文】 北華大學(xué)畢業(yè)設(shè)計(jì)（論文） 1 摘要 當(dāng)今社會(huì)，隨著生產(chǎn)、貿(mào)易、科技的快速發(fā)展，衡器技術(shù)由簡(jiǎn)單的計(jì)重向信息化、一體化發(fā)展。然而，衡器技術(shù)在向這個(gè)趨勢(shì)發(fā)展的時(shí)候，計(jì)量的準(zhǔn)確化、快速化的矛盾一直是困擾衡器技術(shù)發(fā)展的瓶頸。直到上世紀(jì) 70 年代，技術(shù)上逐步成熟的動(dòng)態(tài)電子衡器的發(fā)展，它有效的解決了快速性、準(zhǔn)確性一衡器技術(shù)的兩個(gè)最重要的性能指標(biāo)難以統(tǒng)一的問題。這對(duì)于解決工程中稱重系統(tǒng)的實(shí)時(shí)稱重 .問題尤為重要。 動(dòng)態(tài)電子軌道衡是動(dòng)態(tài)稱重技術(shù)中最常見的一種，本文介紹了動(dòng)態(tài)稱重的特色 :動(dòng)態(tài)電子軌道衡系統(tǒng)采用了 WINDOWS 操作系統(tǒng)作為平臺(tái)，其強(qiáng)大的軟件功能是有效的解決快速性和準(zhǔn)確性統(tǒng)一問題的基礎(chǔ) 。用軟件方法判別火車車型克服了硬件判別法故障率高的弱點(diǎn)。采用自動(dòng)車號(hào)識(shí)別 (AEI)技術(shù)，有效地解決了計(jì)量過程中人工抄號(hào)的弊端，杜絕了人工篡改計(jì)量數(shù)據(jù)的機(jī)會(huì)。提高了計(jì)量數(shù)據(jù)的真實(shí)有效性。動(dòng)態(tài)軌道衡稱重系統(tǒng)做到了數(shù)據(jù)自動(dòng)上傳、統(tǒng)計(jì)報(bào)表、存儲(chǔ)、打印。本設(shè)計(jì)分別闡述了計(jì)量器具的發(fā)展，稱重傳感器的原理，動(dòng)態(tài)電子衡器的設(shè)計(jì)原理與構(gòu)成部分， PLC 與組態(tài)王 Wincc 的通信，信號(hào)處理的方法，車型判別邏輯控制系統(tǒng)，自動(dòng)車號(hào)識(shí)別系統(tǒng)的設(shè)計(jì)。 關(guān)鍵詞 :傳感器 。動(dòng)態(tài)電子軌道衡 。PLC。Wincc 北華大學(xué)畢業(yè)設(shè)計(jì)（論文） 2 Abstract In today39。s society, with production, trade, and the rapid development of technology, weighing apparatus technology by simple account heavy information, to integration development. However, weighing apparatus in to the development trend of technology, the accurate measurement of the contradiction of the fund, has been a major instruments of the development of the technology bottleneck. Until the 1970 s, the technology is gradually mature dynamic electron weighing apparatus of development, it is effective to solve the faster and more accurate a weighing apparatus technology two of the most important performance to the problem of unity. This to engineering of the weighing system real time weighing. The problem is especially important. Dynamic electronic GuiDaoHeng dynamic weighing technology is the most mon kind, this paper introduces the characteristics of dynamic weighting: dynamic electronic GuiDaoHeng system USES the WINDOWS operating system as a platform, its powerful software function is to effectively solve the problem of efficiency and accuracy unity based。 With the software method judging the train car overe the hardware discriminant method of high failure weakness. Adopt the automatic car number identification (AEI) technology, which can effectively solve the measurement process, artificial copy the disadvantages, and put an end to the measurement data of the artificial tamper with the opportunity. Improve the measurement data of the real effectiveness. Dynamic GuiDaoHeng weighing system do data to upload, statistics, storage and print. This design respectively expounds the development of measuring instruments, weighing transducer, the theory of dynamic electron weighing apparatus design principle and structure parts, PLC and configuration king Wincc munications . signal processing methods, models discriminant logic control system, automatic car number recognition system design. Keywords: sensors,Dynamic electronic Guidaoheng, PLC, Wincc 北華大學(xué)畢業(yè)設(shè)計(jì)（論文） 3 目錄 摘要 ................................................................ 1 Abstract............................................................ 2 引言 ................................................................ 5 1 緒論 .............................................................. 6 衡器的發(fā)展史 ................................................ 6 衡器的分類 ................................................... 6 靜態(tài)型 ................................................. 6 動(dòng)態(tài)型 ................................................. 6 課題的國(guó)內(nèi)外現(xiàn)狀 ............................................. 6 課題的國(guó)內(nèi)現(xiàn)狀 ......................................... 6 課題的國(guó)外現(xiàn)狀 ......................................... 7 課題的研究目的和意義 ......................................... 7 課題的研究目的 ......................................... 7 課題的意義 ............................................. 7 本章小結(jié) ..................................................... 8 2 系統(tǒng)工作原理和系統(tǒng)方案 ............................................ 9 系統(tǒng)工作原理介紹 ............................................. 9 動(dòng)態(tài)軌道衡組成及稱重原理 ............................... 9 稱重臺(tái)面的尺寸設(shè)計(jì) .......................................... 11 課題采用的技術(shù)方案 .......................................... 12 動(dòng)態(tài)軌道衡系統(tǒng)的結(jié)構(gòu) .................................. 12 稱重通道的設(shè)計(jì) ........................................ 13 濾波電路 .............................................. 13 本章小結(jié) .................................................... 14 3 稱重系統(tǒng)的硬件設(shè)計(jì) ............................................... 15 硬件系統(tǒng)的組成 ............................................. 15 關(guān)于 PLC 的綜述 ........................................ 15 PLC 的特點(diǎn) ........................................... 15 PLC 的工作原理 ....................................... 16 PLC 的主要功能和應(yīng)用 ................................. 17 PLC 的選型及其模塊配置 ............................... 17 PLC SM331 內(nèi)部選型表如圖 .......................... 18 北華大學(xué)畢業(yè)設(shè)計(jì)（論文） 4 PLC 的 I/O 接線圖 ...................................... 18 S7300 編程簡(jiǎn)介 ....................................... 19 上位機(jī)硬件配置選擇 .......................................... 20 稱重傳感器 .................................................. 20 稱重傳感器的選用 ...................................... 20 傳感器精度的選擇 ...................................... 20 傳感器量程的選擇 ...................................... 20 本設(shè)計(jì)所選用的傳感 器型號(hào) .............................. 21 傳感器具體參數(shù) ........................................ 21 4 稱重系統(tǒng)的軟件設(shè)計(jì)思想 ........................................... 22 本系統(tǒng)的軟件選擇 ............................................ 22 組態(tài)軟件 Wincc 在系統(tǒng)中的具體應(yīng)用 ...................... 22 Wincc 與 PLC 建立通信 .................................. 22 MPI 的概述 ............................................ 23 實(shí)時(shí)稱重界面的設(shè)計(jì) .......................................... 23 主頁說明 .............................................. 23 動(dòng)態(tài)稱重 .............................................. 25 統(tǒng)計(jì)報(bào)表 .................................................... 27 本章小結(jié) .................................................... 27 5 車號(hào)識(shí)別系統(tǒng)的應(yīng)用 ............................................... 28 系統(tǒng)的構(gòu)成 ...........................................