气象演播室系统互联式备份改造设计

Retrofit Design of the Interconnected Backup in Meteorological Virtual Studio System

目前国内地市级气象部门演播室系统依旧采用摄像机采集主持人视频并和虚拟机背景视频叠加进入色键器抠像合成新视频,再由非编设备进行最终采集的串联式运行模式,其中任一节点设备出现问题,整个系统将无法工作。出现故障后采用替换式备份系统,不经济也不便捷,存在很大的不安全因素。针对此情况,利用矩阵设备将原有系统线路进行升级改造,由单一的串联式运行,改造为互联互通式运行模式,提高了系统的稳定性,同时也经济实惠。

At present, the virtual studio system of municipal meteorological departments still adopts series operating mode that uses the camera to collect the video of the host and then composites a new video with the back- ground video superposition in the chroma keyer. At last, the final image is acquired by non-linear editing equipment. If any problem occurs in any node equipment, the whole system will fail to work. Using alternative standby system after the failure is neither economical nor convenient, this problem, the paper suggests upgrading the original system lines besides, there are still risks. To address with matrix equipment, changing the single series operating mode to interconnected operating mode. In this way, the system stability is improved, and at the same time, it is economical and practical.