数字实时脉冲回波法声速测量系统的研制
Digital Real-time Ultrasonic Pulse-Echo Overlap System for Determination of Ultrasonic Velocity
摘 要
使用主要硬件为波形发生器和经过二次开发的数据采集卡，设计了一种新型的实时数字脉冲回波法声速测量系统。系统检测第一回波和第二回波的第2或3个波峰的零点，设计根据两个零点的时间差求得超声波声速，为声速的测量以及其它超声检测技术提供了一种新的思路。
数字化
脉冲回波法
过零检测
Ultrasonic wave speed measurement
Digital
Pulse-echo
Check zero system
Abstract
A new digital real-time ultrasonic pulse-echo overlap system detecting ultrasonic velocity was developed on the hardware base of waveform exciter and digital acquisition card secondly developed. The system checked the zero of the first return wave echo and the second return wave echo, which could be used to calculate the ultrasonic velocity. Thus the design gave a new idea for ultrasonic velocity detecting and other ultrasonic fields.
中图分类号 TG115.28
所属栏目 仪器方法
基金项目
收稿日期 2007/11/16
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备注刘艳平(1984-)，男，在读研究生，研究方向为超声检测。
引用该论文: LIU Yan-Ping,WANG Yin-Guan. Digital Real-time Ultrasonic Pulse-Echo Overlap System for Determination of Ultrasonic Velocity[J]. Nondestructive Testing, 2008, 30(12): 953～954
刘艳平,王寅观. 数字实时脉冲回波法声速测量系统的研制[J]. 无损检测, 2008, 30(12): 953～954
被引情况:
【1】张 毅,蔡灵仓,毕 延, "固体超声声速的脉冲反射法测量",无损检测 32, 412-415(2010)
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参考文献
【1】Cristian Pantea, Dwight G Rickel, Albert Migliori. Digital ultrasonic pulse-echo overlap system and algorithmfor unambiguous determination of pulse transit time[J]. Review of Scientific Instruments,2005,(76):1-2.
【2】Press W H, Teukolsky S A, Vetterling W T, et al. The Art of Scientific Computing[M]. UK: Cambridge University Press,2002.
【3】Ping He. Simultaneous measurement of sound velocity and wall thickness of a tube[J]. Ultrasonics,2001,39407-411.
【4】Ping He. Measurement of acoustics dispersion using both transmitted and reflected pulse[J]. Acost Soc Am,2000,(107):1-2.
【2】Press W H, Teukolsky S A, Vetterling W T, et al. The Art of Scientific Computing[M]. UK: Cambridge University Press,2002.
【3】Ping He. Simultaneous measurement of sound velocity and wall thickness of a tube[J]. Ultrasonics,2001,39407-411.
【4】Ping He. Measurement of acoustics dispersion using both transmitted and reflected pulse[J]. Acost Soc Am,2000,(107):1-2.
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