公开(公告)号：EP0998793A1

公开(公告)日：2000-05-10

申请号：EP98924978.4

申请日：1998-05-29

申请人： EG & G, INC.

发明人： PECK, Jeffrey, V. ,  GEDCKE, Dale, A. ,  BINGHAM, Russell, D.

IPC分类号： H04B1/66

CPC分类号： G01N30/8651 ,  G01N30/72

摘要： A digital signal averager for averaging data collected by an analog detector is provided. The digital signal averager includes an analog-to-digital converter (12) for converting the analog detector output to a digital signal for processing, a timing device (20) for generating delayed timing pulses for sequencing operation of the digital signal averager, an averaging device (30) for summing and storing data. The delayed timing pulses allow data to be acquired by the ADC (12) at a series of variably offset timing sequences relative to a trigger pulse. Offsetting the data acquisition timing sequences by time slices smaller than the actual sample rate of the ADC (12) allows data to be acquired at a higher effective sampling rate. One complete series of offset timing sequences provides a data set containing all the information which would be acquired by an ADC having a faster sampling rate. Accuracy of the data is further enhanced by a series of parallel averaging devices, including one processing device and multiple memory devices, which perform real-time averaging of data. A digital signal processor (98) applies a method for data compression to the averaged data to reduce data transfer rate and storage capacity requirement for transferring the averaged data to an analysis and storage device for long-term storage.

摘要翻译： 提供了一个用于平均模拟检测器收集数据的数字信号平均器。 数字信号平均器包括用于将模拟检测器输出转换为数字信号以供处理的模数转换器（12），用于产生用于对数字信号平均器进行排序操作的延迟定时脉冲的定时装置（20），平均 设备（30），用于求和和存储数据。 延迟的定时脉冲允许数据由ADC（12）以相对于触发脉冲的一系列可变偏移定时序列获取。 通过比ADC（12）的实际采样率更小的时间片来对数据采集时序序列进行偏移允许以更高的有效采样率采集数据。 完整的一系列偏移时序提供了一个数据集，其中包含了具有更快采样速率的ADC采集的所有信息。 数据的准确性通过一系列并行平均设备进一步增强，包括一个处理设备和多个存储设备，可对数据进行实时平均。 数字信号处理器（98）将用于数据压缩的方法应用于平均数据以降低将平均数据传输到用于长期存储的分析和存储设备的数据传输速率和存储容量要求。