【作者】 乔付；

【导师】 张国印；

【作者基本信息】 哈尔滨工程大学 ， 计算机系统结构， 2007， 硕士

【摘要】 目前，矿井下通信的可靠性在当今世界依然是个难题，矿井下通信存在复杂的多径和多址干扰，导致传统的通信系统在矿井下不能良好工作，为满足当前煤矿安全生产和科学管理要求，必须提高矿井下通信系统可靠性。本文根据煤矿井下所做的实验结果研究矿井下定位通信系统。全文分四个部分对矿井下通信系统做了研究和设计，提出研究设计方案。第一部分研究通信系统硬件设计。详细介绍了通信系统的工作原理，各种元器件的选择和系统核心电路外围电路的设计，从硬件上保证数据可靠性。第二部分研究系统软件设计。选择CSMA协议作为本系统的无线接入技术。提出了通信协议和基站识别卡软件设计，从软件上保证数据可靠性。第三部分研究矿井下无线信道特点和编码信道模型，着重研究有关跳频序列的生成方法，提出一种基于改进交织技术无碰撞区跳频序列的构造，并将其应用到本系统中，解决通信系统存在的多径和多址干扰问题。第四部分对通信系统的传播距离和误码率两项重要技术指标进行分析，其实际传播距离和误码率完全满足系统需要。另外，在其他矿井应用本系统只要做实验测定各个频段的电磁干扰，修改系统的射频频率就可通用。并且本系统具有投入成本低、开发周期短、易于安装维护，良好的技术经济效益等优点，可以在矿山等地下工程中推广应用。更多还原

【Abstract】 Underground communication in mines is a difficult problem now, since there are complicated multi-path and multi-address interferences in such environment, where surface ground communication system can not work well. Reliability of underground locating communication system (ULCS) in coal mines must be improved to meet the demand of safety production and scientific management in current coal mines.Through large number of experiments in the coal mine, the ULCS is analyzed and designed. This thesis consists of four parts. A novel system scheme is presented, according to the analysis and design of underground communication system.Firstly, the description of the ULCS hardware design is presented. Principle of the ULCS is discussed in detail. And the choices of components and kernel circuit schematics are proposed, which ensure the reliability of data transmission on hardware.Secondly, the description of the ULCS software design is presented. CSMA protocol is selected by wireless accessed protocol. Communication protocol and software scheme of base stations and cards is presented, which ensure the reliability of data transmission on software.Thirdly, the feature of wireless channel and module of encoded channel under mine are raised, and approach generated of frequency hopping sequences is emphasis. The construction of No-hit zone frequency hopping sequences based on interleave technique improved is presented, which was applied to the ULCS. The method solved the problem of multi-path and multi-address interferences.Fourth, analyse quality index of range transmitted and error rate of ULCS. Factual range transmitted and error rate can meet the needs of the ULCS.In addition, this system can be transferred to the other coal mines by modifying several parameters, which are estimated by measures of electromagnetism interference of every frequency channel. The ULCS has advantages of low cost, short developing cycle, easy installation and maintenance and excellent technical and economic benefit. The ULCS can be spread underground projects.更多还原