采煤机音视频及数据综合传输系统的设计

针对现有采煤机视频、音频及工况监控数据实时传输系统采用无线局域网、光缆或单独拖曳通信电缆时存在不稳定、故障率高、维护困难等缺点,提出了一种基于采煤机主电缆内嵌单根射频同轴电缆的多路视频、音频及数据综合传输系统的设计方案。该系统采用数据调制传输频率高于视频监控信号调制频段的设计方法,避免了数据通信对监控图像质量的影响,且因数据传输具有较高的功率余量,保障了控制数据通信的低误码率。

Design of Integrated Transmission System of Audio,Video and Data for Shearer

In view of shortcomings of bad stability,high failure,difficult maintenance existed in real-time transmission system of video,audio and monitoring data of condition for shearer because of using local area wireless network,cable or drag communication cable,the paper put forward a design scheme of integrated transmission system of multi-channel audio,video and real-time monitoring data with embedding single radio frequency coaxial cable in main cable of shearer.The system adpots a design method that modulation frequency of data transmission is higher than modulation frequency band of video monitoring signal,so as to avoid influence of data communication on quality of monitored image,and guarantee low bit error rate of control data communication because that the data transmission has higher power margin.