基于DSP的煤矿突水在线监测系统研究

发布时间：2018-03-19 16:47

本文选题：激光诱导荧光光谱　切入点：DSP　出处：《安徽理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：我国煤炭行业近几十年来开采力度的加大,开采量的不断增加,导致煤矿开采地区的地形结构发生了较大变化,不同含水层发生了位移移动,造成部分地区发生了煤矿突水事故,给煤矿带来了一系列严重的后果,煤矿矿井被淹没摧毁,煤矿工人安全受到威胁。为了防范突水事故的发生,应该通过各类技术检测含水层的地壳变化和不同地区水有没有发生大量渗透,如果发生变化,根据采集回来的数据和数据库进行对比分析,最终应该给出相应的结果和发出预警。随着半导体技术和传感器技术的高速发展,使得水质的监测技术的实现成为可能,本文提出了一种基于DSP的煤矿突水在线检测系统的研究。在本文中,主要介绍了煤矿发生突水事故的现实情况和分析其发生的主要原因,介绍了激光诱导荧光光谱的监测技术,以激光诱导荧光的技术为基础,设计了基于DSP的荧光光谱监测子系统,在硬件上采用405nm波长的激光器发出激光打在水样上,激发的荧光由光电倍增管接收,再经由信号处理电路处理和24位AD模数转换电路采样,通过485总线送到上位机。为了真正实现监测水质的动态变化,本文还设计了水质的电导率监测和PH监测子系统设计,分析了电导率和PH值监测的原理,对比了多种监测方案,最终给出了系统的设计。在软件上移植了UCOS_Ⅱ实时操作系统,实现了多任务系统的设计,方便了后期系统的维护与升级,在通讯协议上采用ModBus通讯协议,减小了系统通信的误码率,提高了系统的可靠性。本文给出了基于DSP的煤矿突水在线检测系统的具体设计方案,并搭建了系统进行了系统实验测试,针对五种不同的水样进行了采样对比,测试结果表明,本文的研究取得了一定成果,开发出来的硬件采集系统满足了课题的要求。
[Abstract]:In recent decades, with the increase of mining intensity and the increasing of mining quantity, the topographic structure of coal mining areas in China has changed greatly, and different aquifers have been shifted. In order to prevent the occurrence of water inrush accidents, a series of serious consequences have been brought to the coal mines. The coal mines have been submerged and destroyed, and the safety of coal miners has been threatened. All kinds of technologies should be used to detect the crustal changes of aquifers and whether there is a large amount of water permeation in different areas. If changes occur, they should be compared and analyzed based on the collected data and the database. With the rapid development of semiconductor technology and sensor technology, it is possible to realize water quality monitoring technology. In this paper, an on-line detection system of coal mine water inrush based on DSP is proposed. In this paper, the actual situation of water inrush accident in coal mine is introduced and the main reasons are analyzed. The monitoring technology of laser induced fluorescence spectrum is introduced, which is based on laser induced fluorescence technology. A fluorescence spectrum monitoring subsystem based on DSP is designed. In hardware, a laser with a wavelength of 405 nm is used to hit the water sample, and the excited fluorescence is received by a photomultiplier tube. Then the signal processing circuit and 24 bits AD A / D conversion circuit are sampled and sent to the upper computer via 485 bus. In order to truly realize the dynamic change of monitoring water quality, this paper also designs the electrical conductivity monitoring and PH monitoring subsystem of water quality. The principles of conductivity and PH monitoring are analyzed, and several monitoring schemes are compared. Finally, the design of the system is given. The UCOSII real-time operating system is transplanted on the software, and the design of the multitask system is realized. It is convenient to maintain and upgrade the system in the later period. The ModBus communication protocol is adopted in the communication protocol, which reduces the bit error rate of the system communication and improves the reliability of the system. In this paper, the specific design scheme of the on-line detection system of coal mine water inrush based on DSP is given, and the system is set up to carry out the systematic experiment test, and the sampling and comparison of five different water samples are carried out. The test results show that, Some achievements have been made in this paper, and the developed hardware acquisition system meets the requirements of the subject.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD745;TP274

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