矿用实时视频传输系统设计

针对现有煤矿井下视频传输系统存在视频清晰度低、传输速率不稳定、兼容性差等问题,设计了一种矿用实时视频传输系统。该系统采用960 nm红外激光作为辅助光源,利用MCCD图像传感器采集视频信号,提高了低光照强度或黑暗环境下视频清晰度;通过视频解码模块TVP5150将采集的PAL制式模拟视频信号转换为YUV数字信号,数字信号经多格式编码器进行H.264压缩编码,并在此基础上添加UDP报文头进行RTP封装,提高了视频数据传输的时效性;通过Live555流媒体服务器进行数据流化,使用ONVIF标准封装RTSP视频流,通过Socket网络编程实现实时视频流数据网络传输,提高了系统兼容性和传输速率稳定性。测试结果表明,该系统视频传输速率为2.190 Mbit/s,丢包率约为1.256%,达到实时视频传输要求。

Design of mine-used real-time video transmission system

A mine-used real-time video transmission system was designed to solve problems of low video definition,unstable transmission rate and poor compatibility in existing underground video transmission system.The system uses 960 nm infrared laser as auxiliary light source,and uses MCCD image sensor to collect video signals,which improves video definition in low light intensity or dark environment.The collected PAL analog video signal is converted into YUV digital signal through video decoding module TVP5150,then the digital signal is compressed and encoded by H.264 through multi format codec,and UDP packet header is added for RTP encapsulation,which improves timeliness of video data transmission.The data is streamed through Live555 streaming media server,RTSP video streaming is encapsulated with ONVIF standard,and real-time video streaming data transmission is realized through Socket network programming,which improves system compatibility and transmission rate stability.The test results show that the system has video transmission rate of 2.190 Mbit/s and packet loss rate of about 1.256%,which meets real-time video transmission requirements.