【摘要】 煤矿井下传输的信息有监测、监控数据、数字化语音及数字化视频信号功能,根据煤矿井下对信息综合传输的要求和煤矿井下巷道布置的特点,提出并设计了一种适合煤矿井下使用的环形网络结构———光纤混合接入网(FHAN)。FHAN中的节点称作智能接入路由器(IAR),井下各种不同信息均通过IAR接入到主干网络进行传输。对FHAN中的简化路由算法,网络传输协议,关键节点IAR的DSP实现进行了介绍。现场实验表明本文提出的光纤混合接入网适合煤矿井下信息综合传输的要求,网络协议设计合理。更多还原

【Abstract】 The information that should be transmitted in coal mine underground are monitoring and control data,digitalized voice and video.Based on the desires of information transmission in coal mine underground and the characteristic of the structure of the tunnels in coal mine,an underground integrated service digital network is proposed.The interconnecting network structure is called fiber hybrid access network(FHAN).The key nodes in FHAN are called intelligent access router(IAR).Through IAR different information from other underground subsystems can access into and transmit in FHAN network.The simplified algorithm,communication protocols and the intelligent access router realized using DSP are discussed.The experiment results indicated that FHAN and its protocols are suitable for the transmission of underground integrated service digital network.更多还原