论文部分内容阅读
演播室直播风险应急的常用方法是根据设备单点故障制定应急措施,而这些应急措施在网络化、高清化制播环境下,能否将风险控制在可接受风险范围内,并未进行过深入探讨。本文提出运用保护层分析法(LOPA)计算采取应急措施加前后演播室直播风险的水平,判定直播应急措施的有效性,进而确定是否需要增加新的应急措施。首先概述了保护层分析法(LOPA)的工作原理、分析步骤,其次详细介绍了通过采用LOPA法分析“直播黑场”事件防护效果的应用过程。
Studio broadcast risk emergency common method is based on single-point equipment failure to develop emergency measures, and these emergency measures in the network, high definition of broadcast environment, the risk can be controlled within the acceptable risk range, has not been conducted in-depth Discussion. This paper proposes to use protective layer analysis (LOPA) to calculate the risk of live broadcast before and after the adoption of emergency measures and before and after the studio, to determine the effectiveness of live broadcast emergency measures and to determine whether new emergency measures need to be added. First of all, the working principle and analysis steps of LOPA are summarized. Secondly, the application process of LOPA method to analyze the protection effect of “Live Blackfield” is introduced in detail.