单频网地面数字电视发射机故障异常检测

Analysis of Common Failures of Terrestrial Digital TV Transmitter in Single Frequency Network

由于传统方法构建的故障分析模型采集的发射机分量值不精准,导致所用单频网地面数字电视发射机常见故障分析时间较长,为此,研究单频网地面数字电视发射机故障异常检测方法。对单频网地面数字电视发射机结构特征进行提取,分析发射机内部各指标运行参数,构建故障分析模型;利用该模型采集内部部件运行数据,采用逐级检测技术排除故障。

The time it takes for the common fault analysis of the single frequency network terrestrial digital TV transmitter is longer,due to the inaccuracy of the transmitter component values collected by the fault analysis model built with the traditional method..Therefore,the method of detecting the abnormal of the single frequency network terrestrial digital TV transmitter fault is studied.Extract the structural characteristics of the digital terrestrial TV transmitter for the single frequency network,and analyze the operating parameters of the internal indicators of the transmitter,then build a fault analysis model,which uses the model to collect the operating data from internal components.