矿井下多气体检测仪数据处理及软件设计

发布时间：2018-04-21 04:12

本文选题：煤矿气体检测 + Zigbee技术　；参考：《南京航空航天大学》2017年硕士论文

【摘要】：三十多年来,在我国经济建设取得巨大成就的同时,煤矿安全生产事故仍然频发多发,严重危害人民生命安全,阻碍经济可持续发展。现有的煤矿井下气体检测系统大多采用有线通信方式进行数据传输,存在着检测范围受限、线路依赖性强、布线繁琐等缺点。针对这些方面的局限,本文进行了相关研究和设计工作,能够有效克服上述有线传输方式的不足,利用无线传感网络的覆盖范围广、组网便携、灵活组织、扩展性强的特点,构建覆盖井下巷道的无线传输网络同时利用井上已有的网络线缆实现长距离传输,对改善目前煤矿安全监测的状况、提高煤矿安全生产条件具有重要意义。本文首先对现有矿井下多气体检测系统的背景和发展现状进行了调研和总结,分析传统检测系统存在的不足和今后的发展趋势,并对相关技术理论进行深入学习,以煤矿井下空间环境和检测需求为基础,采用融合了无线和有线数据传输方式的矿井下多气体检测和传输方案。本文以STM32为核心设计了多气体浓度检测模块,以ZigBee芯片JN5148搭建Mesh状无线传输网络,实现了矿井下环境多气体的检测和气体数据传输。在比较了当下几种常见的无线通信方式和以太网网关实现方式的基础上,采用嵌入式以太网芯片W5500设计了ZigBee转以太网网关,实现无线和有线传输的结合。并以Labview 2014为开发环境进行检测系统上位机软件界面的开发。对系统的气体浓度检测模块、终端节点、路由节点、协调器节点和以太网网关进行了详细的软硬件设计,详述了各部分的工作过程,对节点的无线传输功能和网关通信功能进行了测试,并阐述了上位机软件程序设计。最后,针对目标气体间可能存在的交叉干扰情况进行了分析和试验验证,基于正交试验方法设计了气体样本数据配气方案,并采取了RBF神经网络和支持向量回归机两种方法进行数据处理,得到的处理结果满足检测需求。本文实现了ZigBee无线网络和以太网络的互联,能够完成对矿井下气体监测数据在较大范围内和远距离的传输,并通过上位机实现了对用户数据和气体监测数据的管理。整个系统具有较好的实时性、可靠性和实用性,可以以波形和表格两种方式实时显示数据,并具有生成报表、超限报警、监测数据查询等功能,维护方便、扩展性强,满足了方案设计要求。
[Abstract]:In the past 30 years, while China's economic construction has made great achievements, coal mine safety accidents still occur frequently, seriously endangering the safety of people's lives and hindering the sustainable development of economy. Most of the existing underground gas detection systems use wired communication for data transmission, which has the shortcomings of limited detection range, strong line dependence, cumbersome wiring and so on. In view of these limitations, this paper has carried on the related research and the design work, can effectively overcome the above wired transmission way insufficiency, utilizes the wireless sensor network the coverage scope is wide, the network is portable, the flexible organization, the expansibility strong characteristic, It is of great significance to construct a wireless transmission network covering underground roadway and realize long distance transmission by using the existing network cable in the well, which is of great significance to improve the current situation of coal mine safety monitoring and improve the conditions of coal mine safety production. In this paper, firstly, the background and development status of the existing multi-gas detection system under the mine are investigated and summarized, the shortcomings of the traditional detection system and the development trend in the future are analyzed, and the relevant technical theories are deeply studied. Based on the space environment and detection requirement of underground coal mine, the multi-gas detection and transmission scheme of underground mine is adopted, which combines wireless and wired data transmission mode. In this paper, a multi-gas concentration detection module is designed with STM32 as the core, and a Mesh wireless transmission network is built with ZigBee chip JN5148, which realizes the detection of multi-gas and gas data transmission under the mine environment. On the basis of comparing several common wireless communication modes and Ethernet gateway implementation methods, the ZigBee to Ethernet gateway is designed with embedded Ethernet chip W5500 to realize the combination of wireless and wired transmission. With Labview 2014 as the development environment, the software interface of the upper computer of the detection system is developed. The software and hardware of the gas concentration detection module, terminal node, routing node, coordinator node and Ethernet gateway are designed in detail, and the working process of each part is described in detail. The wireless transmission function and gateway communication function of the node are tested, and the software design of the upper computer is described. Finally, the possible cross-interference between the target gases is analyzed and verified by experiments. Based on the orthogonal test method, the gas sample data distribution scheme is designed. Two methods, RBF neural network and support vector regression machine, are adopted to process the data. In this paper, the interconnection of ZigBee wireless network and Ethernet network is realized, and the transmission of gas monitoring data under mine is completed in a large range and long distance, and the management of user data and gas monitoring data is realized by the upper computer. The whole system has better real-time, reliability and practicability. It can display data in real time by waveform and table. It also has the functions of generating report forms, alarming exceeding limits, monitoring data query, and so on. The system is easy to maintain and has strong expansibility. Meet the project design requirements.
【学位授予单位】：南京航空航天大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD711;TP311.52

【参考文献】