本文選題：微震　切入點：單軸地震檢波器　出處：《安徽理工大學》2013年碩士論文　論文類型：學位論文

【摘要】：在煤礦井下開采煤炭時,由于自然或人為的因素所引起的煤巖破裂現(xiàn)象是無法避免的。微震事件是指局部范圍內(nèi)煤巖在破裂時以地震波形式產(chǎn)生的震動。煤礦井下巖爆、冒頂、垮塌、沖擊地壓、煤和瓦斯突出等礦井災害在發(fā)生之前都會產(chǎn)生一些微震信號,如果能夠實時的監(jiān)測到這些微震信號并及時預防,就可以很大程度上減少災害造成的損失。所以對煤礦來說建立一套功能先進的微震監(jiān)測系統(tǒng)是非常必要的,本文就是探索建立一套基于ARM7內(nèi)核的微控制器LPC2388的礦用微震監(jiān)測系統(tǒng)。 本文主要工作是利用傳感器采集井下微震信號,并進行放大、濾波、A/D轉換、小波去噪,并完成上、下機之間的以太網(wǎng)通信。 本文第一章介紹了論文的研究背景,現(xiàn)狀和主要研究內(nèi)容,第二章對礦用微震監(jiān)測技術作了基本的介紹,敘述了系統(tǒng)總框圖和各部分的設計方案。第三章介紹了礦用微震監(jiān)測系統(tǒng)的硬件電路的設計。分別介紹了檢測微震信號的傳感器選型,信號調(diào)理電路,LPC2388的接口電路。傳感器選擇G1-1.1-1.0單軸地震檢波器；信號調(diào)理電路包括放大電路,陷波電路,巴特沃斯低通濾波電路；LPC2388的接口電路包括電源電路、復位電路、時鐘電路、JTAG調(diào)試電路、A/D轉換電路、液晶顯示電路、鍵盤電路、存儲器擴展電路,基于TCP/IP協(xié)議的以太網(wǎng)通信電路。第四章介紹了本系統(tǒng)采用的實時操作系統(tǒng),敘述了系統(tǒng)主程序任務、數(shù)據(jù)處理任務、數(shù)據(jù)采集中斷服務任務、以太網(wǎng)通信任務、鍵盤掃描任務、液晶顯示任務、數(shù)據(jù)存儲任務。第五章介紹了該礦用微震監(jiān)測系統(tǒng)的實驗調(diào)試。分別介紹了調(diào)試方法,陷波電路仿真圖,巴特沃斯低通濾波電路仿真圖,微震信號的小波閾值去噪仿真圖。最后,本文的結尾處對系統(tǒng)總結,并展望了以后有待改進的方面。
[Abstract]:The phenomenon of coal rock fracture caused by natural or man-made factors is unavoidable in underground coal mining. The microseismic event refers to the earthquake wave in the form of seismic wave in the local area of coal and rock rupture. Mine disasters such as collapse, rock burst, coal and gas outburst all produce microseismic signals before they occur. If these microseismic signals can be monitored in real time and prevented in time, The damage caused by disasters can be reduced to a great extent. So it is very necessary for coal mines to set up an advanced microseismic monitoring system. This paper explores the establishment of a mine microseismic monitoring system based on ARM7 core microcontroller LPC2388. The main work of this paper is to collect microseismic signals from downhole by sensors, amplify, filter A / D conversion, wavelet denoising, and complete Ethernet communication between upper and lower computers. The first chapter introduces the research background, the present situation and the main research contents of the thesis. In the second chapter, the mine microseismic monitoring technology is introduced. The general block diagram of the system and the design scheme of each part are described. Chapter three introduces the design of the hardware circuit of the mine microseismic monitoring system. The interface circuit of signal conditioning circuit LPC2388. The sensor selects G1-1.1-1.0 uniaxial seismograph. The signal conditioning circuit includes amplifier circuit, notch circuit, Butterworth low-pass filter circuit. The interface circuit of LPC2388 includes power supply circuit, reset circuit, etc. Clock circuit JTAG debugging circuit A / D conversion circuit, liquid crystal display circuit, keyboard circuit, memory expansion circuit, Ethernet communication circuit based on TCP/IP protocol. Chapter 4th introduces the real time operating system used in this system. The main program task, data processing task, data acquisition interrupt service task, Ethernet communication task, keyboard scan task, LCD task are described. Data storage task. Chapter 5th introduces the experimental debugging of the mine microseismic monitoring system. The debugging method, notch circuit simulation diagram, Butterworth low-pass filter circuit simulation diagram are introduced, respectively. Finally, the system is summarized at the end of this paper, and the future improvements are prospected.
【學位授予單位】：安徽理工大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TD76

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相關期刊論文 前10條

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本文編號：1604707