Abstract: Architecture of redundant broadcasting system is presented. SPN model is built and influence on system availability by real-time transmissions is analyzed. Some key modules such as check-in, check-out, time synchronizing, faults monitoring and diagnosing are discussed. Faults simulations prove the design’s effectiveness.

Key words: redundant broadcasting system, real-time switch, faults self-monitoring, time synchronizing

摘要： 提出了双机同步播控系统的体系结构。建立了SPN模型，对实时切换各环节对系统可用性的影响进行了分析。给出了实时切换系统的几个关键问题如切入、切出、时钟同步、故障自监测的解决方案。通过故障仿真验证了系统设计的有效性。

关键词: 双机同步播控, 实时切换, 故障自监测, 时钟同步

CLC Number: 

• TP302