10kW数字调幅中波广播发射机故障声光报警电路原理浅析

Brief Analysis of Sound and Light Alarm Circuit for Fault of 10 kW Digital Amplitude Modulation Medium Wave Broadcasting Transmitter

10 kW数字调幅中波广播发射机设计了比较完备的监测系统,运行过程中能够实时对其各单元部分状态进行全程监测,当某单元发生故障,监测显示电路可在发射机工作面板上给出相应的故障指示。同时,产生的故障保护信号由控制系统及执行机构产生相应的保护动作,也可通过外部接口板电路将故障信号送到数据采集器供远程监测控制使用。根据中波发射台站用户切实需求,针对DM10系列数字调幅广播发射机的报警局限性进行优化设计,对影响发射机安全稳定运行的各类故障报警信号提取并单独进行逻辑处理及声光报警,有效防止台站停播、劣播事故的发生。

The 10 kW digital amplitude-modulated medium wave broadcast transmitter has been designed a relatively complete monitoring system,which can monitor the whole process of the state of each unit in real time during operation.When a unit fails,the monitoring display circuit can give the corresponding fault indication on the working panel of the transmitter.At the same time,the generated fault protection signal is generated by the control system and the executive mechanism to generate the corresponding protection action,and the fault signal can also be sent to the data collector through the external interface board circuit for remote monitoring and control.According to the practical needs of users of medium wave transmitting stations,this paper optimizes the alarm limitations of DM10 series digital amplitude modulation broadcast transmitters,extracts and separately processes all kinds of fault alarm signals that affect the safe and stable operation of the transmitters,and makes sound and light alarm to effectively prevent the station from stopping broadcasting and poor broadcasting accidents.