广播电视信号源系统及监控系统的设计

The design of broadcast television signal source system and monitoring system

在广播电视发射的安全播出工作中,独立完善的信号源系统和监控系统显得尤为重要。设计了一套独立完善的广播电视信号源系统和监控系统,信号源系统采用光纤、卫星信号作为主备两路信号源,接收处理后通过应急切换器,可自动或手动控制切换信号源,再送入音频处理器,对声音信号进行处理、动态补偿后送入发射机。监控系统分为两路,一路通过取自发射机的信号送入循环监听设备和显示器,值班人员可直观观察声音信号是否正常;另外一路通过开路监测广播信号的强度,实时监测,并在出现故障时通过调制度检测仪设备显示声、光报警,减少值班人员劳动强度。

in the safe broadcast of radio and television broadcasting, independent and perfect signal source system and monitoring system are particularly important. An independent and perfect radio and TV signal source system and monitoring system are designed. The source system uses optical fiber and satellite signal as the main source of two signals. After receiving and processing, the source can be automatically or manually controlled by the emergency switcher. Then the audio processor can be sent to the audio processor to process the sound signal. After dynamic compensation, it is sent to the transmitter. The monitoring system is divided into two routes, one way through the signal from the transmitter to the cycle monitor equipment and the monitor. The staff on duty can observe the sound signal directly or not; the other way is through. Over the road monitoring the intensity of the broadcast signal, real-time monitoring, and in the case of failure, by adjusting the system detector equipment to display sound and light alarm to reduce the labor intensity of the personnel on duty.