本文選題：軸組式動(dòng)態(tài)稱重 + 專家系統(tǒng)��； 參考：《太原理工大學(xué)》2017年碩士論文

【摘要】：動(dòng)態(tài)稱重(WIM)技術(shù)在我國經(jīng)歷了多年的發(fā)展,已廣泛應(yīng)用在公路運(yùn)輸計(jì)重收費(fèi)與超限超載檢測系統(tǒng)中。目前,廣泛應(yīng)用中的動(dòng)態(tài)稱重系統(tǒng)多為軸重式和整車式。前者作為早期產(chǎn)品,采用短秤臺(tái)結(jié)構(gòu),稱重精度不高卻造價(jià)低廉;后者作為后續(xù)產(chǎn)品,改用長秤臺(tái)結(jié)構(gòu),提高了稱重精度卻降低了過車效率,提高了項(xiàng)目成本。軸組式動(dòng)態(tài)汽車衡在兩者基礎(chǔ)上結(jié)合各自優(yōu)點(diǎn),采用單個(gè)可以同時(shí)容納三聯(lián)軸軸組的秤臺(tái)作為主平臺(tái)。實(shí)現(xiàn)了相對(duì)較長的采樣時(shí)間,提高了采樣精度和采集的完整性,避免了軸組被分為多個(gè)車軸多次稱量而產(chǎn)生的誤差,增強(qiáng)了防作弊能力。同時(shí)相對(duì)整車式降低了施工成本和施工難度,縮短了施工時(shí)間,實(shí)現(xiàn)了良好的道路環(huán)境適應(yīng)性,成為了動(dòng)態(tài)汽車衡更新?lián)Q代的首選產(chǎn)品。稱重儀表作為系統(tǒng)數(shù)據(jù)的采集處理單元,車輛軸型識(shí)別、軸組載荷及整車總重量的計(jì)算等功能都由其來具體實(shí)現(xiàn),其性能決定了整個(gè)系統(tǒng)的稱重精度和軸型識(shí)別率。本文針對(duì)軸組式稱重儀表的設(shè)計(jì)提出了相應(yīng)方案,主要包括儀表模塊化硬件的設(shè)計(jì)與選型、儀表軟件多線程開發(fā)、稱重?cái)?shù)據(jù)的預(yù)處理和專家系統(tǒng)的設(shè)計(jì)四個(gè)部分。本文主要內(nèi)容如下:第一,介紹了動(dòng)態(tài)稱重技術(shù)發(fā)展的歷史背景,論述了現(xiàn)階段面臨的主要問題。針對(duì)目前稱重產(chǎn)品存在的問題,提出了軸組式動(dòng)態(tài)稱重系統(tǒng)及儀表的設(shè)計(jì)方案。第二,對(duì)軸組式動(dòng)態(tài)稱重系統(tǒng)的主要組成設(shè)備做了詳細(xì)的介紹,并對(duì)各結(jié)構(gòu)的功能及其工作原理進(jìn)行了說明。依據(jù)軸組式動(dòng)態(tài)稱重系統(tǒng)設(shè)計(jì)方案的要求,對(duì)儀表硬件電路進(jìn)行了模塊化設(shè)計(jì)。第三,基于WinCE嵌入式操作系統(tǒng)的多線程模塊化編程技術(shù)開發(fā)的軸組式動(dòng)態(tài)稱重儀表的軟件設(shè)計(jì)和基于MCGS組態(tài)軟件的儀表屏幕程序設(shè)計(jì)。第四,根據(jù)軸組式軸識(shí)別信號(hào)的特點(diǎn),論述了上下秤識(shí)別、聯(lián)軸識(shí)別功能實(shí)現(xiàn)的具體原理;分析了軸組式稱重信號(hào)的特點(diǎn),采用加權(quán)遞推平均濾波算法、平滑濾波算法對(duì)稱重信號(hào)進(jìn)行了濾波處理,闡述了有效稱量段的選取與軸組載荷的計(jì)算的方法及依據(jù)。第五,根據(jù)軸組式動(dòng)態(tài)稱重?cái)?shù)據(jù)的特點(diǎn),設(shè)計(jì)了相應(yīng)專家系統(tǒng)。采用專家系統(tǒng)分析車輛動(dòng)態(tài)稱重?cái)?shù)據(jù),實(shí)現(xiàn)車輛軸型識(shí)別功能,提高整車總重量及軸組載荷的稱重精度的同時(shí)提升了容錯(cuò)運(yùn)行能力。通過現(xiàn)場測試并依據(jù)檢定規(guī)程對(duì)軸組式動(dòng)態(tài)稱重系統(tǒng)的稱重精度及軸型識(shí)別率做了評(píng)價(jià)。本文主要?jiǎng)?chuàng)新點(diǎn)如下:采用專家系統(tǒng)對(duì)動(dòng)態(tài)稱重?cái)?shù)據(jù)進(jìn)行分析處理,以不同軸型間的顯著差異特征作為軸型判別依據(jù),依據(jù)軸型識(shí)別結(jié)果執(zhí)行相應(yīng)規(guī)則分析有效稱量段的數(shù)據(jù),完成整車總重量及軸組載荷的匹配與計(jì)算。在保證系統(tǒng)穩(wěn)定可靠運(yùn)行的同時(shí),提高稱重精度及軸型識(shí)別率并提升容錯(cuò)運(yùn)行能力。本課題設(shè)計(jì)的儀表與配套系統(tǒng)已通過型式評(píng)價(jià),整車總重量誤差在0.5%以內(nèi),雙軸剛性參考車輛單軸載荷誤差在0.5%以內(nèi),其他參考車輛單軸或軸組載荷偏差在1%以內(nèi),滿足《JJG 907-2006動(dòng)態(tài)汽車衡檢定規(guī)程》及《GBT21296-2007動(dòng)態(tài)公路車輛自動(dòng)衡器》中規(guī)定的車輛總重量準(zhǔn)確度等級(jí)1級(jí)、單軸或軸組載荷準(zhǔn)確度B級(jí)首次檢定的要求。
[Abstract]:Dynamic weighing (WIM) technology has experienced many years' development in our country. It has been widely used in the system of heavy load and overloading of highway transportation. At present, most of the dynamic weighing systems in widely used are axle load and vehicle type. The former is used as an early product, with short scale structure, low weighing precision but low cost; the latter is used as the latter. To continue the product and use a long scale platform structure, the weighing precision is improved but the vehicle efficiency is reduced, and the cost of the project is improved. On the basis of the two, the axis group dynamic automobile scale combines the advantages of the two, and uses a single scale platform which can simultaneously accommodate the triplex axis group as the main platform. The relative longer sampling time is realized, the sampling accuracy and the acquisition are improved. The integrity of the system avoids the error caused by the multi axle weighing which is divided into multiple axes, and enhances the ability to prevent cheating. At the same time, it has reduced the construction cost and construction difficulty, shortened the construction time and shortened the construction time, realized the good adaptability of the road environment, and became the first choice product of the dynamic steam car scale renewal and replacement. The functions of the collection and processing unit of the data, the identification of vehicle axle type, the load of the axle group and the calculation of the total weight of the whole vehicle are all realized. The performance determines the weighing precision and the axial type recognition rate of the whole system. In this paper, the design and selection of the instrument modular hardware are mainly included in the design of the axle type weighing instrument. Type, instrument software multithreading development, weighing data preprocessing and expert system design four parts. The main contents of this paper are as follows: first, the historical background of the development of dynamic weighing technology is introduced, and the main problems are discussed at the present stage. In view of the problems existing in the present weighing products, the dynamic weighing system and instrument are put forward. Second, the main components of the shaft type dynamic weighing system are introduced in detail, and the functions and working principles of each structure are explained. According to the requirements of the design scheme of the dynamic weighing system of the shaft group type, the hardware circuit of the instrument is modularized. Third, based on the WinCE embedded operating system. The software design of axle group dynamic weighing instrument developed by multi thread modular programming technology and the design of instrument screen program based on MCGS configuration software. Fourth. According to the characteristics of the axis group axis identification signal, this paper discusses the specific principle of the recognition of the upper and lower scales and the realization of the joint axis recognition function, and analyses the characteristics of the axle type weighing signal and uses the weighting. The recursive average filtering algorithm and the smoothing filter algorithm symmetrical heavy signal are filtered. The method and basis for the selection of the effective weighing section and the calculation of the axle load are expounded. Fifth, according to the characteristics of the dynamic weighing data of the shaft group, the expert system is designed. The vehicle dynamic weighing data is analyzed by the expert system, and the vehicle shaft is realized. The model recognition function improves the weighing precision of the total weight of the whole vehicle and the axle load, and improves the fault-tolerant operation ability. Through the field test and according to the verification regulation, the weighing precision and the axial type recognition rate of the shaft type dynamic weighing system are evaluated. The main innovation points of this paper are as follows: the mining expert system is used to analyze the dynamic weighing data. Taking the significant difference characteristics between different axis types as the basis of axial type discrimination, according to the results of axial type recognition, the corresponding rules are used to analyze the data of the effective weighing section and complete the matching and calculation of the total weight of the whole vehicle and the load of the axle group. The instrument and supporting system designed by this project have passed the type evaluation, the total weight error of the whole vehicle is within 0.5%, the single axle load error of the biaxial rigid reference vehicle is less than 0.5%, the single axis or axle load deviation of other reference vehicles is less than 1%, and satisfies the and the
【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TP182;U492.321

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本文編號(hào)：1827598

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