基于有色金属非煤矿山的智能安全帽系统

基于集成物联网理论、无线宽带和RFID(射频识别技术)等关键技术，设计智能安全帽系统。围绕安全帽这一载体进行模块整合以及功能分解，现场实现网页端和移动端的应用，既满足了井下作业人员对智能安全帽的的安全需求，又解决了管理人员的监管需求。     

基于ZigBee技术的井下瓦斯监测系统

瓦斯浓度过高是引起煤矿事故的主要原因,为了确保井下人员安全问题,本文设计了基于ZigBee技术的井下瓦斯监测系统.该系统主要采用以CC2430为核心的ZigBee模块和传感器模块来构成监控子系统,地面可通过计算机和无线网络获得井下各模块的工作状态和数据,测试结果表明,该系统具有实时性好、准确度高、易操作等优点.     

基于IP技术的井下人员定位系统的设计与实现

提出了一种基于以太网技术的井下人员定位系统,并且以Visual C 作为开发工具,基于矢量制图的方式,设计了系统的图形组态模块,该模块包括图元的绘制、拖动、放大和缩小等具体属性。另外还描述了主要类的设计,充分运用了VC 语言的封装性、继承性和虚拟多态性。     

基于无线传感网络的煤矿井下瓦斯与温度监测系统

瓦斯和温度检测是煤矿安全生产中重要的工作,针对煤矿井下布线不方便的特点,提出了利用射频芯片的无线传感器网络来采集和传输瓦斯与温度信息的系统架构。系统由移动节点和固定节点组成。移动节点和固定节点、固定节点与固定节点之间采用无线技术传递信息。固定节点中的汇聚节点收集相应范围内的瓦斯与温度数据后通过载波方式将其传递给地面监控中心。实现了灵活组网、低开销、扩展性好和实时监测的功能,实施效果较好。     

海上移动视频监控通信系统的设计和应用

介绍了用超短波作为传输手段的海上移动视频监控通信系统．该系统利用最新的超短波COFDM无缝漫游技术，使海上移动监控点的图像、数据、语音通过中继站实时传输到监控中心，指挥决策人员可以通过现场图像和监控中心的数据平台及专家系统生成的各种预案，快速做出正确决策处理突发事件．     

基于GSM的通信设备报警系统设计

设计了基于GSM的通信设备报警系统.系统采用低功耗高性能的ARM芯片LPC2103作为主控电路,将GSM模块、语音播放模块、传感器节点模块等连接在一起,实现了在通信设备发生故障的情况下自动给维护人员发送短信和语音提示的功能.在网络处理机制方面,提出了一种基于移动代理的网络管理方式,有效地提高了系统的执行效率和可靠程度.该系统已经在实践中得到应用并取得良好效果.     

基于RFID的矿井人员定位系统设计

根据有源RFID系统的卓越性能以及超低功耗的芯片特性,结合矿井无线传输的特点,设计了煤矿井下人员定位系统．系统的读写器和标签均采用TI公司的低功耗MSP430F254单片机作为主控芯片,采用CC2500芯片作为射频芯片．采用ASP．NET＋SQL Sever2000,构建了基于Web的煤矿井下人员定位系统的软件系统．矿井人员定位系统能对煤矿入井人员进行实时跟踪监测和定位、查询事故现场的人员位置分布情况、被困人员数量等信息,为事故抢险提供科学依据。     

基于GIS的井下人员定位系统的设计

为改善井下的安全管理,采用基于接收信号强度指示(RSSI)的定位算法,设计了基于地理信息系统(GIS)的井下人员定位系统。本系统结合GIS系统、空间数据库以及属性数据库,实现了对井下人员的动态监测和指挥等安全管理,为矿难救援提供科学依据。     

基于STM32单片机的煤矿综合监测系统设计

本文针对煤矿井下巷道复杂、监测系统功能单一、定位不准确等问题,采用了STM32系列单片机对煤矿井下环境参数进行监测,并结合RFID定位技术和LANDMARC算法,实现井下人员的精确定位,提高系统集成度和安全系数.此外采用CAN总线与上位机组态王进行通信连接,在上位机设置人机交互界面,对煤矿环境和井下人员进行实时监测,进一步减少煤矿事故的发生,保证井下人员安全.本设计方案为其他煤矿监测系统提供了参考依据.     

应急疏散路径规划系统的研究与应用

应急疏散是救援工作的重要环节,合理的路径规划能有效地帮助人员安全逃生。研究了井下人员安全应急疏散路径规划系统,基于物联网技术将井下人员定位系统、综合调度通讯系统及监测监控系统等采集的信息与路径搜索算法相结合,以传感器设备采集的实时数据为疏散路径的权值,实现了井下人员安全逃生疏散仿真。结果表明:该系统具有良好的实用性,可为应急救援工作提供决策依据。     

Simulation Study and Probe on UWB Wireless Communication in Underground Coal Mine

1 Introduction Ultra Wide Band (UWB) communication is the technology that transmits signals by using nanosecond pulses. Its characteristics include 1) a high data rate; 2) low power dissipation; 3) a strong anti-multipath fading ability; 4) a simple structured, small bulk, low cost and high sensitive, portable and wireless system and 5) low interference with the existing narrowband communication system. It has been the subject of general interest about short distance wireless communication a…     

A system for underground road condition monitoring

Poor road conditions in underground mine tunnels can lead to decreased production efficiency and increased wear on production vehicles. A prototype system for road condition monitoring is presented in this paper to counteract this. The system consists of three components i.e. localization, road monitoring, and scheduling. The localization of vehicles is performed using a Rao-Blackwellized extended particle filter, combining vehicle mounted sensors with signal strengths of Wi Fi access points. Two methods for road monitoring are described: a Kalman filter used together with a model of the vehicle suspension system, and a relative condition measure based on the power spectral density. Lastly, a method for taking automatic action on an ill-conditioned road segment is proposed in the form of a rescheduling algorithm.The scheduling algorithm is based on the large neighborhood search and is used to integrate road service activities in the short-term production schedule while minimizing introduced production disturbances.The system is demonstrated on experimental data collected in a Swedish underground mine.     

超长隧道、矿井预警分布数据采集和传输系统研究

研究DTU(Data Acquisition and Transmission Unit)以解决超长距离隧道或矿井建设的地下工程施工安全监视、预警预报问题.以嵌入式微处理机为核心,配合可接口RS485总线的光纤网络接口;以MODBUS规约为总线通信标准,在隧道或矿井中可以级联成为多达32个DTU检测点的分布式数据采集系统.每处DTU可接口最多512个检测通道或传感器输出量.配合中控计算机实时数据管理软件,使超长隧道或矿井内多个监测点能对预警预报信号及时、准确汇总与预报,为隧道、矿井施工安全提供保障.     

Electromagnetic environments in roadways of underground coal mines and a novel testing method

The electromagnetic environment of laneways in underground coal mines is an important area for the design of new electronic products,as well as a fundamental space for mine monitoring,surveillance,communications and control systems.An investigation of electromagnetic interference in coal mines is essential for the enhancement of performances of these systems.In this study,a new field method is provided in which radiated emission tests in coal mine laneways have been carried out.We conclude that:1) the wiring motor vehicles can radiate interference with a bandwidth up to 1 GHz and with an amplitude 10 dBμV/m higher than the background noise;2) the PHS (Personal Handy phone System) mobile communication system can cause interference 40 dBμV/m higher than the background noise;3) an interference 25 dBμV/m higher than the background noise can be generated during the communication at a working bandwidth of 48.8 MHz;and 4) power cables,battery vehicles as well as mechanical and electrical dong rooms have little effect on the electromagnetic radiation environment in coal mine tunnels.     

弯曲矩形隧道电磁波衰减特性

实际矿井隧道有许多弯曲段,为实现全矿井的无线移动通信,需要知道在弯曲隧道中电磁波的传播特性,针对简化了的弯曲矩形隧道模型,在柱坐标系直推导出了弯曲矩形隧道中的电磁波模方程,利用Airy函数与柱函数之间的近似关系式,采用抛物线法求解了波模方程,从而得到了在不同条件下的波模衰减系数,由分析可知弯曲隧道的曲率半径越小,即拐弯越急,电磁波衰减越严重;且频率越高,电磁波衰减越大。     

调度移动通信系统的研究

依据目前国内矿井无线通信系统在开发及使用中存在的问题，提出了一种新型小区制全矿井调度移动通信网络的具体结构，设计出两种系统的呼叫方式，确定多信道共用技术原则，最后，根据确定的基站与移动台的结构形式进行井下实验验证。     

金属矿山岩体移动监测数据库系统设计与实现

介绍了在微机上建立金属矿山岩移监测数据库系统,本系统利用ＦＯＸＢＡＳＥＴＲＵＥ ＢＡＳＩＣ混合编程,具有对监测数据进行数据管理,数据处理以及绘图等功能,并在某矿山的岩移监测研究中得到应用,效果良好。     

Advances in fibre optic based geotechnical monitoring systems for underground excavations

Geotechnical stability is a major concern for the long-term safety and integrity of underground infrastructures such as tunnels, railway stations, mine shafts and hydraulic power chambers. An effective geotechnical monitoring system is able to provide adequate warning to underground personnel prior to any unexpected major geotechnical failure. This paper reviews the conventional geotechnical monitoring sensors and the emerging Fibre Optic Sensing(FOS) techniques, pointing out their unique features and major differences. Recent advances in various FOS based monitoring systems, including Brillouin time domain distributed optical sensors and fibre Bragg grating(FBG) sensors, are investigated through a critical review of the laboratory studies and field applications used for underground geotechnical monitoring. Particular emphasis is given to fibre packaging, temperature compensation, installation methods and instrumentation performance in the underground environment. A detailed discussion of the advantages and limitations of each FOS monitoring system is also presented in this paper.     

Numerical simulation of airflow distribution in mine tunnels

Based on 3D modelling of typical tunnels in mines, the airflow distribution in a three-center arch-section tunnel is investigated and the influence of air velocity and cross section on airflow distribution in tunnels is studied. The average velocity points were analyzed quantitatively. The results show that the airflow pattern is similar for the three-center arch section under different ventilation velocities and cross sectional areas. The shape of the tunnel cross section and wall are the critical factors influencing the airflow pattern. The average velocity points are mainly close to the tunnel wall. Characteristic equations are developed to describe the average velocity distribution, and provide a theoretical basis for accurately measuring the average velocity in mine tunnels.     

福建煤矿监测监控系统实际应用存在的问题及对策探讨

通过对福建煤矿的监测监控系统的使用情况具体调查,发现存在着煤矿安全监测监控设备落后、通信协议不规范、传感器等质量不过关、设备开停传感器使用不当、监控系统的测点布置与实际工作面不符、风速传感器测值不准确等问题。针对以上问题提出了对策方案,完善福建煤矿监测监控系统的建设,对煤矿灾害的预测预报,对煤矿安全生产有着一定的指导意义。