【摘要】：礦井排水系統(tǒng)承擔(dān)著煤礦主要的涌水排出任務(wù)。目前,我國大多數(shù)礦井排水系統(tǒng)仍采用人工監(jiān)測(cè)、繼電器控制的方法,而由繼電器控制的礦井排水系統(tǒng)可靠性不高、應(yīng)急能力較差,存在一定的安全隱患。本文在查閱礦井排水系統(tǒng)相關(guān)文獻(xiàn)的基礎(chǔ)上,結(jié)合嵌入式PLC技術(shù)及傳感器技術(shù),研發(fā)設(shè)計(jì)了基于嵌入式PLC的礦井排水監(jiān)控系統(tǒng)。參考目前常用的水泵房構(gòu)建原理和設(shè)計(jì)方法,確定了礦井排水系統(tǒng)整體架構(gòu),結(jié)合監(jiān)控系統(tǒng)實(shí)際功能需求,對(duì)水泵、傳感器等重要元器件進(jìn)行可合理選型。確定礦井排水監(jiān)控系統(tǒng)總體方案,并給出排水系統(tǒng)控制策略。分析現(xiàn)有自動(dòng)化排水系統(tǒng)控制器原理,充分利用嵌入式PLC成本低、兼容性好、可拓展性強(qiáng)等優(yōu)勢(shì),對(duì)礦井排水監(jiān)控系統(tǒng)下位機(jī)進(jìn)行了開發(fā)。選用ATMEL公司推出的AVR系列單片機(jī)ATMEGA169作為控制器的主控芯片。首先完成了電源及復(fù)位模塊的設(shè)計(jì)。其次利用ATMEGA169的內(nèi)部嵌入式功能,在其內(nèi)部8路10位精度A/D轉(zhuǎn)換器基礎(chǔ)上,完成了模擬量采集模塊的設(shè)計(jì);在其內(nèi)部USART基礎(chǔ)上,完善了與上位機(jī)的串行通信模塊設(shè)計(jì)。然后結(jié)合系統(tǒng)實(shí)際功能需求,實(shí)現(xiàn)了控制輸出模塊設(shè)計(jì)。最后完成了系統(tǒng)程序的設(shè)計(jì)與編寫。在下位機(jī)系統(tǒng)開發(fā)完成的基礎(chǔ)上,利用VC++6.0軟件開發(fā)平臺(tái),采用模塊化設(shè)計(jì)思想,對(duì)監(jiān)控系統(tǒng)上位機(jī)監(jiān)控軟件進(jìn)行開發(fā)。選擇雙向鏈表結(jié)構(gòu)作為梯形圖程序的底層數(shù)據(jù)存儲(chǔ)結(jié)構(gòu),采用正向深度優(yōu)先掃描算法完成梯形圖程序向語句表的轉(zhuǎn)化。以C語言作為指令表語句向下位機(jī)目標(biāo)代碼轉(zhuǎn)換的中間過渡代碼,并利用AVRStudio軟件平臺(tái)的G-CC編譯實(shí)現(xiàn)C語言向目標(biāo)代碼的轉(zhuǎn)換,從而實(shí)現(xiàn)了整個(gè)嵌入式PLC控制器的開發(fā)。利用串口采集和數(shù)據(jù)庫技術(shù)實(shí)現(xiàn)了排水監(jiān)控系統(tǒng)參數(shù)監(jiān)測(cè)顯示功能。最后,在實(shí)驗(yàn)室現(xiàn)有條件下,搭建了排水監(jiān)控系統(tǒng)驗(yàn)證平臺(tái),對(duì)系統(tǒng)可行性進(jìn)行了驗(yàn)證。
[Abstract]:The mine drainage system is responsible for the main discharge task of coal mine water gushing. At present, most mine drainage systems in China still use manual monitoring and relay control methods. However, the mine drainage system controlled by relay is not reliable and has poor emergency ability. On the basis of consulting relevant documents of mine drainage system, combined with embedded PLC technology and sensor technology, a mine drainage monitoring system based on embedded PLC is developed and designed in this paper. Referring to the construction principle and design method of water pump room in common use at present, the whole structure of mine drainage system is determined. According to the actual function requirement of monitoring system, the important components such as water pump and sensor can be reasonably selected. The overall scheme of mine drainage monitoring system is determined, and the control strategy of drainage system is given. By analyzing the principle of the existing automatic drainage system controller and making full use of the advantages of embedded PLC, such as low cost, good compatibility and strong expansibility, the lower computer of mine drainage monitoring system is developed. ATMEGA 169, a series of AVR microcontroller produced by Atmel, is chosen as the main control chip of the controller. First, the design of power supply and reset module is completed. Secondly, using the embedded function of ATMEGA169, the analog data acquisition module is designed on the basis of 8-channel 10-bit precision A / D converter, and the serial communication module with host computer is perfected on the basis of USART. Then the design of the control output module is realized according to the actual functional requirements of the system. Finally, the system program is designed and written. On the basis of the development of the lower computer system, using the software development platform of VC 6.0 and adopting the modular design idea, the monitoring software of the upper computer of the monitoring system is developed. The bidirectional linked list structure is chosen as the bottom data storage structure of the ladder diagram program, and the forward depth first scanning algorithm is used to complete the transformation from the ladder chart program to the statement table. C language is used as the intermediate transition code of the target code conversion from the instruction table statement down to the bit-machine, and the G-CC compiler of AVRStudio software platform is used to realize the conversion from C language to target code, thus the development of the whole embedded PLC controller is realized. The parameter monitoring and display function of drainage monitoring system is realized by serial port acquisition and database technology. Finally, under the existing conditions in the laboratory, a water monitoring system verification platform is built, and the feasibility of the system is verified.
【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TD636

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