摘要
根据广播发射台值班任务的实际特点自行设计、制作了一款监测报警装置。可同时监测多路广播音频信号,一旦播出设备出现故障,没有信号输出,它就会发出声光报警,第一时间提示值班员是哪路通道出了问题,以便及时处理设备故障。可作为值班辅助装置应用在各发射机房、播控机房等监听多路音频信号的场所。使用一年多来,总报警率在98%以上,误报率在1%以下。
A monitoring device is designed based on the actual radio transmitting characteristics. It can simultaneously monitor multiple broadcast audio signals, once the broadcast equipment has problem, there is no signal output, it can make sound and alarm light. It is used as auxiliary device in the duty room of the launch, broadcast control room and other multi-channel audio signal monitoring sites. Used more than one year, the total alarm rate is more than 9g%, and false positive rate is below 1%.
出处
《电声技术》
2011年第8期79-81,共3页
Audio Engineering
关键词
音频信号
音频电平表
施密特触发器
受控四端稳压器
停播率
audio signal
audio level meter
Schmitt trigger
controlled four-terminal voltage regulator
offthe air rate