基于预设场景和双流热备份的天气预报会商系统

Weather Forecast Television Discussion System Based on Preset Scene and Double-Stream Real-Time Backed up

为提高远程气象服务水平,开发了基于预设场景和双流热备份的天气预报会商系统,实现了利用中控系统根据会议内容预设工作模式,减少了音视频矩阵和摄像头调整等复杂操作,简化了操作流程,方便管理。对音视频和显示系统增加了备份设备,当主用设备故障时,采用应急设备保障会议正常进行,能够提高对现场突发故障的应急处理能力,实现了上下行音视频和VGA信号的热备份。采用数字音频处理器进行音频信号处理,声音更加清晰,减少了由于人工调整调音台不当造成的啸叫。该系统结构不但适用于标清系统,调整相关设备参数后也适用于高清系统,对该系统的组成和原理进行了介绍,为电视会商系统的运行保障和建设提供参考。

In order to improve the support capability and service level of weather forecast service, the weather forecast television discussion system based on the preset scene and double-stream real-time back up is established. It realizes the preset operation mode according to the conference content by the central control system. The operation procedures, such as audio-video matrix switch and camera adjustment, are simplified. The downlink/uplink audio and video signals are backed up in real time. If the main equipment in run abruptly breaks off, the back-up equipment will be put into use at once. The digital processor is used to deal with audio signals to improve the sound effect and reduce the noises induced from improper manual adjustment. This system is suitable for both standard and high definition systems after adjusting some correlation parameters. The structure and principles of the system are introduced, which supplies references for the maintenance, operation, and construction of the like weather forecast television discussion systems.