一、引言随着矿业的发展及技术进步,日本矿山正在逐步实现现代化。与此同时,对矿山通信系统的要求亦越来越高。不但需要通信系统能够高质量地传输声音、影象及数据,而且由于矿山固有的环境,也要求通信设备和传输介质安全可靠。因此,传统的通信系统已不能满足现代矿山的要求。这是因为要想传输大量且复杂的信息,需要铺设大量的通信电 I. INTRODUCTION With the development of mining industry and technological progress, the Japanese mines are gradually realizing modernization. At the same time, the requirements for mine communication systems are also getting higher and higher. Not only do communication systems require high-quality audio, video and data transmission, but also require reliable communications equipment and transmission media due to the inherent environment of the mine. Therefore, the traditional communication system can no longer meet the requirements of modern mines. This is because a large amount of communication power needs to be laid in order to transmit a large amount of complicated information