矿用微震监测系统的研究

发布时间：2018-03-13 04:04

本文选题：微震　切入点：单轴地震检波器　出处：《安徽理工大学》2013年硕士论文　论文类型：学位论文

【摘要】：在煤矿井下开采煤炭时,由于自然或人为的因素所引起的煤岩破裂现象是无法避免的。微震事件是指局部范围内煤岩在破裂时以地震波形式产生的震动。煤矿井下岩爆、冒顶、垮塌、冲击地压、煤和瓦斯突出等矿井灾害在发生之前都会产生一些微震信号,如果能够实时的监测到这些微震信号并及时预防,就可以很大程度上减少灾害造成的损失。所以对煤矿来说建立一套功能先进的微震监测系统是非常必要的,本文就是探索建立一套基于ARM7内核的微控制器LPC2388的矿用微震监测系统。本文主要工作是利用传感器采集井下微震信号,并进行放大、滤波、A/D转换、小波去噪,并完成上、下机之间的以太网通信。本文第一章介绍了论文的研究背景,现状和主要研究内容,第二章对矿用微震监测技术作了基本的介绍,叙述了系统总框图和各部分的设计方案。第三章介绍了矿用微震监测系统的硬件电路的设计。分别介绍了检测微震信号的传感器选型,信号调理电路,LPC2388的接口电路。传感器选择G1-1.1-1.0单轴地震检波器；信号调理电路包括放大电路,陷波电路,巴特沃斯低通滤波电路；LPC2388的接口电路包括电源电路、复位电路、时钟电路、JTAG调试电路、A/D转换电路、液晶显示电路、键盘电路、存储器扩展电路,基于TCP/IP协议的以太网通信电路。第四章介绍了本系统采用的实时操作系统,叙述了系统主程序任务、数据处理任务、数据采集中断服务任务、以太网通信任务、键盘扫描任务、液晶显示任务、数据存储任务。第五章介绍了该矿用微震监测系统的实验调试。分别介绍了调试方法,陷波电路仿真图,巴特沃斯低通滤波电路仿真图,微震信号的小波阈值去噪仿真图。最后,本文的结尾处对系统总结,并展望了以后有待改进的方面。
[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.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TD76

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