| 高速数字采集系统通道间信号传输延迟时间分析 |
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| 引用本文： | 赵冬青,任勇峰.高速数字采集系统通道间信号传输延迟时间分析[J].测试技术学报,2011,25(2):178-182. |
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| 作者姓名： | 赵冬青 任勇峰 |
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| 作者单位： | 1. 中北大学机电工程学院,山西太原,030051
2. 中北大学电子与计算机科学技术学院,山西太原,030051 |
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| 摘 要： | 通道间信号传输延迟时间是多通道高速数字采集系统的一项重要评价指标.本文应用Hilbert Huang变换对采集到的单频正弦信号进行数字信号滤波处理,对滤波后的数据进行Hilbert变换得到信号的瞬时相位,可以精确识别信号源的频率,并能够方便地得到通道问信号传输延迟时间.为高速数字采集系统通道间信号传输延迟时间分析提供了...
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| 关 键 词： | 希尔伯特黄变换 高速数字采集 传输延迟 |
Evaluation Signal Transmission Delay in Multi-Channel High-Speed Data Acquisition System |
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| ZHAO Dongqing,REN Yongfeng.Evaluation Signal Transmission Delay in Multi-Channel High-Speed Data Acquisition System[J].Journal of Test and Measurement Techol,2011,25(2):178-182. |
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| Authors: | ZHAO Dongqing REN Yongfeng |
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| Affiliation: | ZHAO Dongqing1,REN Yongfeng2(1.School of Mechatronic Engineering,North University of China,TaiYuan 030051,China,2.School of Electron and Communication Engineering,Taiyuan 030051,China) |
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| Abstract: | The time of signal transmission delay among different channels is an important evaluation indicator of multi-channel high-speed data acquisition system.This paper presents the Hilbert-Huang transform to process the acquired single-frequency sinusoidal signal by digital signal filtering,the instantaneous phase of the filtered data is obtained through Hilbert transform,and then we can gain the correct frequency information of signal source and the signal transmission delay among different channels.Experiments... |
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| Keywords: | hilbert-huang transform high-speed data acquisition signal transmission delay |
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