【作者】 王伟峰；

【导师】 邓军；

【作者基本信息】 西安科技大学 ， 安全技术及工程， 2010， 硕士

【摘要】 煤田火灾分布很广,遍布南北半球,不仅中国有,而且印度、美国、俄罗斯、澳大利亚、印度尼西亚、中亚等国家和地区都普遍存在。中国由于特殊的地理位置和气候条件,成为世界上煤田自燃灾害最为严重的国家。据初步估算,我国煤田火灾每年至少造成200亿元的经济损失。现有的煤田火灾温度监测主要是人工测温法,测温法由于是点接触,预测预报范围小,安装、维护工作量大、不能提供实时监测和预警,特别是探头、引线极易破坏,在实际应用中受到技术和经济的限制,不宜大面积探火采用,不能很好的满足煤矿安全生产的要求。由于煤田发火区域有隐蔽性、着火点分散、被测点多、距离远等特点,使得对煤田火灾的预防、监控和治理非常困难。无线自组网技术、移动通信技术、互联网技术与温度传感器相结合的监测方法,是近几年来一个新的发展趋势,改变了传统温度传感器系统的拓扑结构,适应更多温度测量的应用场合。本文根据煤田火灾钻孔温度监测的实际需求,设计了集ZigBee技术、GPRS技术、Internet技术、嵌入式计算机控制技术、传感器技术、数据采集技术、数据库技术于一体的煤田火灾无线自组网钻孔温度远程监控系统。本文给出了系统的整体组成框架,对系统的功能和性能需求、工作原理和工作方式进行了分析,设计了无线测温终端、ZigBee-GPRS网关的硬件和软件及上位机监控中心系统,描述了监控系统的应用环境,给出了现场布置方法,论述了系统的监控机制,分析了工业现场的应用效果。本系统将ZigBee技术和GPRS技术相结合,实现了煤田火区钻孔温度数据短距离采集与数据的远程传输,解决了目前煤田火灾远程监控的难题,节省了系统的成本。工业现场应用表明本系统通讯距离满足大规模煤田火灾的监测需求,具有高的可靠性,能方便的实现煤田火灾监测的自动化和网络化。同时亦可检验煤田火灾治理效果,对煤矿优选安全生产方案,科学、合理地进行生产管理和事故预防工作起到了重要作用。因此,该远程监控系统的研究对煤田火灾的预测和火源探测技术的发展具有实际指导的重要意义。更多还原

【Abstract】 Coalfield fire is widely distributed around the world, from China, India, America, Russia, Australia, Indonesia, Central Asia and other countries and regions. Due to the special geographical location and climatic conditions, the coalfield spontaneous combustion in China is among the most serious countries in the world. It is estimated that the economic losses of China’s coalfield fire is at least RMB 200 billion per year. The existing temperature monitoring technique of the coalfield fire is mainly by means of artificial monitoring. As temperature monitoring possesses the shortcomings of point-contact, small forecast range, heavy workload of installation and maintenance, failing to provide real-time monitoring and early warning, especially the easy damage of probe and lead, it is restricted in practical applications due to technical and economic constraints, which leads to the infeasibility of widely used for fire detection, hence it can not be well positioned to meet the requirements of coal mine production safety. The Characters of spontaneously combusted coalfield, such as invisibility, scattered ignition points, remote distance and other characteristics, make coalfield fire prevention, monitoring and control extremely difficult. The monitoring method of the Wireless ad hoc network technology, mobile communication technology, Internet technology combined with the temperature sensor is a new development trend in recent years. It has changed the topology of the traditional temperature sensor system to meet the additional applications of the temperature measurement.According to actual demands of the coalfield fire borehole temperature monitoring, the system integrates ZigBee technology, GPRS technology, Internet technology, embedded computer control technology, sensor technology, data acquisition technology and database technology in one. The present gived a framework of the overall system composition, the function and required performance, the working principle and method of the system, designed the hardware and software of the wireless temperature measurement terminal, ZigBee-GPRS gateway and host computer control center system, described the application environment of the monitoring system and the layout method in engineering,discussed the monitoring mechanism of the system, and analyzed effect of the system in practical industrial engineering. The system integrates the advantages of both ZigBee and GPRS technology. It realized the coalfield fire area temperature Short-range acquisition of the data and remote transmitting of the data, solved the present difficult problem of monitoring remote coalfield fires. The application of system in practical engineering shows that the communication range of the system meets the needs of large-scale coalfield fire monitoring with high reliability. The system can easily achieve the automation and network of coalfield fire monitoring.It is very important for checking out the effect of the coalfield fire controlling. It plays an important role for coal mine optimal safety programs, scientific and reasonable production management and accident prevention. Therefore, the research of the remote monitoring system has significance of the practical guidance for the forecast of the coal fire and the developing of the fire detection technology.更多还原