發(fā)布時(shí)間：2018-01-24 13:31

  本文關(guān)鍵詞： 文檢儀 步進(jìn)電機(jī) P89C669 P89LPC922 控制系統(tǒng)　出處：《北京交通大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：近幾十年來(lái),隨著各國(guó)學(xué)者對(duì)文檢技術(shù)的研究,文檢技術(shù)得到了很大提高,但由于文件制成時(shí)間檢驗(yàn)受到多方面因素的影響,文檢技術(shù)仍然具有很多難點(diǎn)。文檢技術(shù)在各種案件糾紛中發(fā)揮著重要作用,用于文件制成時(shí)間檢驗(yàn)的文件制成時(shí)間檢驗(yàn)儀,簡(jiǎn)稱文檢儀,也得到了廣泛的應(yīng)用。 通過(guò)在要檢驗(yàn)文件的文字上添加一定量的化學(xué)試劑,通過(guò)化學(xué)反應(yīng),再進(jìn)行相應(yīng)的分析,可以實(shí)現(xiàn)文件時(shí)間檢驗(yàn)。本文設(shè)計(jì)的基于單片機(jī)的步進(jìn)電機(jī)控制系統(tǒng),可以應(yīng)用在文檢儀中。步進(jìn)電機(jī)將接收到的數(shù)字脈沖信號(hào)轉(zhuǎn)換成線位移或者角位移,具有很好的定位精度；采用單片機(jī)實(shí)現(xiàn)對(duì)電機(jī)的控制,具有輸出脈沖準(zhǔn)確、實(shí)時(shí)性強(qiáng)和功能靈活等優(yōu)點(diǎn),并且簡(jiǎn)化了硬件線路,降低了成本,提高了系統(tǒng)的可靠性。從而將該步進(jìn)電機(jī)控制系統(tǒng)應(yīng)用在文檢儀中,可以實(shí)現(xiàn)注液器的準(zhǔn)確定位和注液量的精確控制,以及物鏡、轉(zhuǎn)臺(tái)等的精確調(diào)節(jié)。通過(guò)該步進(jìn)電機(jī)控制系統(tǒng),可以準(zhǔn)確地實(shí)現(xiàn)在文件的檢測(cè)位置上精確添加一定量的化學(xué)試劑。 本文系統(tǒng)地介紹了步進(jìn)電機(jī)控制系統(tǒng),包括各功能模塊的選擇方案論證、設(shè)計(jì)和調(diào)試。該系統(tǒng)主要由上位機(jī)人機(jī)交互界面模塊,串口通信模塊,主控模塊,6個(gè)被控模塊以及6個(gè)電機(jī)驅(qū)動(dòng)模塊構(gòu)成。 上位機(jī)人機(jī)交互界面是通過(guò)使用VC++6.0軟件完成設(shè)計(jì)的。主控模塊選擇Philips公司推出的單片機(jī)P89C669作為微處理器完成設(shè)計(jì),通過(guò)硬件電路的設(shè)計(jì)和軟件部分的設(shè)計(jì)實(shí)現(xiàn)指令的接收,分析和發(fā)送等功能。被控模塊選擇Philips公司推出的單片機(jī)P89LPC922作為微處理器完成設(shè)計(jì),實(shí)現(xiàn)了與主控模塊之間的通信、指令的接收和發(fā)送等功能。串口通信模塊采用集成芯片MAX232設(shè)計(jì),實(shí)現(xiàn)TTL標(biāo)準(zhǔn)電平與EIA標(biāo)準(zhǔn)電平的轉(zhuǎn)換。電機(jī)驅(qū)動(dòng)模塊則采用芯片L289N實(shí)現(xiàn)電路設(shè)計(jì),接收被控模塊的控制脈沖,并驅(qū)動(dòng)步進(jìn)電機(jī)的運(yùn)行。 最后通過(guò)對(duì)各功能模塊的調(diào)試及功能模塊之間數(shù)據(jù)通信的調(diào)試,驗(yàn)證了該系統(tǒng)能夠?qū)崿F(xiàn)對(duì)電機(jī)運(yùn)行狀態(tài)的精確控制,從而確保文檢儀能夠?qū)崿F(xiàn)注液、物鏡、轉(zhuǎn)臺(tái)等的精確調(diào)節(jié)。
[Abstract]:In recent decades, with the research of document checking technology, the document retrieval technology has been greatly improved, but due to the time of document making, it is affected by many factors. Document checking technology still has a lot of difficulties. Document inspection technology plays an important role in all kinds of case disputes. It has also been widely used. By adding a certain amount of chemical reagents to the text of the document to be examined, and through the chemical reaction, the corresponding analysis is carried out. The stepper motor control system based on single chip microcomputer can be used in the document checker. The step motor converts the received digital pulse signal into linear displacement or angular displacement. Good positioning accuracy; The single chip microcomputer is used to control the motor, which has the advantages of accurate output pulse, strong real-time and flexible function, and simplifies the hardware circuit and reduces the cost. The reliability of the system is improved, so that the stepper motor control system can be applied to the instrument, which can realize the accurate location of the injector and the accurate control of the liquid injection quantity, as well as the objective lens. Through the step motor control system, we can accurately add a certain amount of chemical reagents to the detecting position of the file. This paper systematically introduces the stepper motor control system, including the selection, demonstration, design and debugging of each functional module. The system is mainly composed of upper computer man-machine interface module, serial communication module, main control module. Six controlled modules and six motor driving modules are formed. The man-machine interface of the host computer is designed by using VC 6.0 software. The main control module selects P89C669 of Philips company as the microprocessor to complete the design. The instruction is received through the design of hardware circuit and software part. Analysis and transmission functions. The controlled module selected the MCU P89LPC922 from Philips Company as the microprocessor to complete the design, and realized the communication with the main control module. The serial communication module is designed by integrated chip MAX232. The motor drive module uses the chip L289N to realize the circuit design, receives the controlled module control pulse, and drives the step motor operation. Finally, through the debugging of each functional module and the debugging of the data communication between the functional modules, it is verified that the system can realize the accurate control of the running state of the motor, so as to ensure that the instrument can realize the liquid injection and objective lens. Precise adjustment of turntable, etc.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TP273;TM383.6

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王宗培,孫寶奎,程智,任雷;論步進(jìn)電動(dòng)機(jī)產(chǎn)品的格局(統(tǒng)一步進(jìn)電動(dòng)機(jī)相數(shù)和齒數(shù)的研究)[J];電工技術(shù)學(xué)報(bào);1999年04期

2 王黨利;寧生科;馬寶吉;;基于TB6560的步進(jìn)電機(jī)驅(qū)動(dòng)電路設(shè)計(jì)[J];單片機(jī)與嵌入式系統(tǒng)應(yīng)用;2010年01期

3 魏衍波,王桂蓮,魏天路;單片機(jī)的步進(jìn)電機(jī)控制系統(tǒng)研究[J];防爆電機(jī);2005年04期

4 馬利民;鄒紅文;;基于P89LPC922單片機(jī)多功能汽車后車窗控制器[J];國(guó)外電子元器件;2008年04期

5 沙萬(wàn)中;文件制成時(shí)間檢驗(yàn)技術(shù)概述[J];江蘇警官學(xué)院學(xué)報(bào);2003年06期

6 孫祥國(guó);;基于ARM單片機(jī)的步進(jìn)電機(jī)控制系統(tǒng)設(shè)計(jì)[J];機(jī)電工程技術(shù);2007年06期

7 許明偉;李志鵬;郭文峰;;ARM單片機(jī)技術(shù)特點(diǎn)及其應(yīng)用[J];林業(yè)機(jī)械與木工設(shè)備;2007年12期

8 高正榮;;我國(guó)文件制成時(shí)間檢驗(yàn)技術(shù)概況[J];甘肅科技縱橫;2006年06期

9 陳廷俠;趙紅枝;;MAX232在串口通信中的作用分析與測(cè)試[J];新鄉(xiāng)學(xué)院學(xué)報(bào)(自然科學(xué)版);2009年04期

10 王世全,暴仁,謝朋,孟品佳;圓珠筆油墨字跡書寫時(shí)間鑒別的研究[J];中國(guó)司法鑒定;2001年01期

，

本文編號(hào)：1460159