基于Mesh网络井下救灾环境参数监测系统的设计与实现

发布时间：2018-08-18 12:09

【摘要】：近年来,国内煤矿事故发生越来越频繁。煤矿事故多数发生于地下煤矿,旦发生事故,煤矿原有的通信系统将可能失效,这将极大地阻碍矿难发生后井下的救援工作。目前,我国井下应急救灾通讯设备仅能提供语音或简单数据信息,无法全面反映灾害区域的实际情况。另外,由于井下地理环境特殊,巷道错综复杂,使得矿井下通信以及发生煤矿事故后救援行动难以实现。同时,救援过程中极易发生各种次生灾害,对各种次生灾害的担忧和无法准确判断往往会严重迟滞救援工作的开展。本文正是基于这样的背景,依托于国家科技支撑计划课题“基于Mesh网络井下可视化无线救灾通讯技术与装备”(2013BAK06B03),提出建立一套有效、可靠的井下无线应急救灾通讯系统,并完成了其中的环境参数监测子系统终端和终端软件的开发设计。根据井下应急救灾通讯系统的网络需求,本文构建了井下应急救灾通讯系统无线Mesh网络。提出了系统结构设计框架。从主要特点和网络结构等方面描述了无线Mesh网络,通过比较无线Mesh网络与其他无线网络的性能特点,确定并选择无线Mesh网络作为井下无线应急救灾通讯无线网络。在此基础上,对无线Mesh网络的网络结构和网络设备也进行了测试和分析,选择了最合适的网络结构和网络设备。根据井下无线应急救灾通信系统环境监测子系统设计的功能需求,开发了环境监测子系统终端,为了环境监测子系统的终端开发选择了嵌入式开发系统作为开发的系统,ARM处理器作为嵌入式硬件平台,Linux作为开发的操作系统。采用多线程的方式构建了终端平台,完成了终端环境参数采集和阈值报警功能。根据控制中心环境参数监测软件开发需求,在VC++6.0平台上利用C++语言开发了“环境参数监控系统”软件和“环境参数监控终端图形化显示及报警系统”软件。对数据传输格式和通信协议进行了设计,完成了各个功能模块的开发,实现了在主控端对环境参数的监控及图形化显示,同时还可以阈值报警。本文最后进行了系统性能的综合测试和性能分析。首先在大运河森林公园搭建测试环境,通过无线Mesh网络的性能测试测试结果验证了本文设计的无线Mesh网络具有高吞吐量、时延低和场强高的特点；接着在校园内搭建测试环境,通过环境参数监测子系统性能测试也验证了本文设计的环境监测子系统完成了对数据的采集并存储的功能,同时还可以图形化显示数据采集结果并且可以提供阈值预警功能。最终完成了井下环境参数监测系统的开发。
[Abstract]:In recent years, coal mine accidents in China are more and more frequent. Most coal mine accidents occur in underground coal mines, but once accidents occur, the original communication system of coal mines may fail, which will greatly hinder the underground rescue work after the mine accident. At present, the underground emergency and disaster relief communication equipment in our country can only provide voice or simple data information, and can not reflect the actual situation in the disaster area. In addition, because of the special underground geographical environment and complicated roadway, it is difficult to realize the communication under mine and the rescue operation after coal mine accident. At the same time, all kinds of secondary disasters are easy to occur in the rescue process. Based on this background, this paper puts forward a set of effective and reliable underground wireless emergency disaster relief communication system based on Mesh network visualization wireless disaster relief communication technology and equipment (2013BAK06B03), which is supported by the National Science and Technology support Program. The development and design of the terminal and terminal software of environmental parameter monitoring subsystem are also completed. According to the network requirement of underground emergency communication system, this paper constructs the wireless Mesh network of underground emergency relief communication system. The design framework of the system structure is presented. This paper describes the wireless Mesh network in terms of its main characteristics and network structure. By comparing the performance of the wireless Mesh network with other wireless networks, the wireless Mesh network is determined and selected as the underground wireless emergency relief communication wireless network. On this basis, the network structure and network equipment of wireless Mesh network are also tested and analyzed, and the most suitable network structure and network equipment are selected. According to the functional requirement of environment monitoring subsystem design of underground wireless emergency disaster relief communication system, the terminal of environment monitoring subsystem is developed. For the terminal development of the environment monitoring subsystem, the embedded development system is selected as the system developed by arm processor as the embedded hardware platform and Linux as the operating system. The terminal platform is constructed by multithreading, and the terminal environment parameter collection and threshold alarm function are completed. According to the development requirement of environment parameter monitoring software in control center, the software of "environment parameter monitoring system" and "environmental parameter monitoring terminal graphical display and alarm system" are developed by using C language on the platform of VC 6.0. The data transmission format and communication protocol are designed, the development of each function module is completed, the monitoring and graphical display of environmental parameters are realized at the main control end, and the threshold alarm is also realized. Finally, the comprehensive test and performance analysis of the system performance are carried out. Firstly, the test environment is built in the Grand Canal Forest Park. The performance test results of wireless Mesh network verify that the wireless Mesh network designed in this paper has the characteristics of high throughput, low delay and high field strength. The performance test of the environment parameter monitoring subsystem also verifies that the environment monitoring subsystem designed in this paper has completed the function of collecting and storing the data, at the same time, it can display the data acquisition results graphically and provide the threshold warning function. Finally, the development of underground environmental parameter monitoring system is completed.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD655;TN929.5

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