摘要
针对我国广电行业传输系统中码流切换设备缺少切换控制以及切换状态监看报警的实际情况,介绍一种基于嵌入式平台的码流切换控制系统设计方案。系统采用模块化设计,包括GPI触发、状态监看以及语音报警三部分。GPI触发部分通过STM32控制继电器通断来实现,码流切换器输出的Relay信号控制指示灯完成状态指示,同时发出语音报警。该控制系统可以对多台码流切换器进行控制和状态监看报警,能够有效降低安全播出事故的发生率,在广电传输系统中具有重要的应用价值。
This paper introduces a design scheme of the stream switching control system based on the embedded platform in view of the lack of switching control and the actual situation of switching status monitoring alarm in the transmission system of China’s radio and television industry.The system adopts modular design,including GPI trigger,status monitoring and voice alarm.The GPI triggering part is realized by controlling the on-off of the Relay through STM32,and the Relay signal control indicator output by the stream switcher completes the status indication and sends out a voice alarm at the same time.The control system can control multiple stream switchers and monitor the status of the alarm.The system can effectively reduce the incidence of safe broadcasting accidents and has important application value in broadcasting transmission system.
作者
郑伟
肖建波
代作伟
石然
吴艳
ZHENG Wei;XIAO Jianbo;DAI Zuowei;SHI Ran;WU Yan(Guizhou Radio and Television Station,Guiyang 550025,China)
出处
《电视技术》
2021年第8期109-112,共4页
Video Engineering
关键词
嵌入式
码流切换
安全播出
embedded
stream switching
safe broadcasting
作者简介
郑伟(1985—),男,硕士,工程师,研究方向为播控运维和管理。
