摘要
针对多变量综合测量问题,提出一种多物理量群体效应思想,以具有公共时基的多维矢量空间方式表征多变量测量结果,展现它们之间的耦合、关联、因果、时序等关系。阐述了数据采集系统通道间延迟时间差的地位、作用和价值,介绍了用通道间延迟时间差方式来定量评估不同通道的同步差异,用以进行多通道同步采集的时基补偿和修正,最终将数据采集的同步界面延展到各通道传感器的测量端。
Aiming at the problem of multi-variable comprehensive measurement,a multi-physical quantity group effect idea is proposed,which represents multi-variable measurement results in a multi-dimensional vector space with common time base,and shows the coupling,correlation,causality,and time sequence among them.The status,function and value of the delay time difference between channels in data acquisition system are explained.The method of using the delay time difference between channels to quantitatively evaluate the synchronization difference of different channels is introduced,and the time base compensation and correction of multi-channel synchronous acquisition is presented.Finally,the synchronization interface of data acquisition is extended to the measurement terminals of the sensor in each channel.
作者
梁志国
刘渊
尹肖
孙浩琳
张大治
LIANG Zhiguo;LIU Yuan;YIN Xiao;SUN Haolin;ZHANG Dazhi(National Key Laboratory of Science and Technology on Metrology&Calibration,Changcheng Institute of Metrology&Measurement,Beijing 100095,China)
出处
《计测技术》
2021年第4期1-6,共6页
Metrology & Measurement Technology
基金
国家重点研发计划(2017YFF0206202)。
关键词
同步采样
多通道数据采集
动态测量
多变量
综合测量
表征
通道间延迟时间差
synchronous sampling
multi-channel data acquisition
dynamic measurement
multi-variable
comprehensive measurement
characterization
delay time difference between channels
