QQ客服 官方微博 反馈留言

	Continuous-wave ultrasonic Doppler method for pipe-flow measurements
	Luo Shou-nan ; Liu Yan ; Feng Guan-ping
	2010-05-10 ; 2010-05-10
关键词	Practical/ Doppler measurement fast Fourier transforms flow measurement flowmeters frequency modulation pipe flow ultrasonic measurement/ continuous-wave ultrasonic Doppler method pipe-flow measurements CW Doppler signal intermediate-frequency demodulation zoom FFT fast Fourier transform weighted average algorithm frequency evaluation digital-signal-processing device ultrasonic Doppler flowmeters velocity flow flow direction/ A4780 Measurement instrumentation and techniques for fluid dynamics A4760 Flows in ducts, channels, and conduits A4385G Measurement by acoustic techniques B7320W Level, flow and volume measurement B7820 Sonic and ultrasonic applications
中文摘要	Introduced a system for pipe-flow measurements based on continuous-wave (CW) ultrasonic Doppler method. To process the CW Doppler signal, intermediate-frequency (IF) demodulation, zoom FFT (fast Fourier transform) and weighted average algorithm for frequency evaluation were implemented in a single digital-signal-processing device. Thus we solved problems in conventional ultrasonic Doppler flowmeters such as hard to measure low velocity flow and decide the flow direction.
语种	中文 ; 中文
出版者	Editorial Board of the Instrument Technique and Sensor J ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/24427]
专题	清华大学
推荐引用方式 GB/T 7714	Luo Shou-nan,Liu Yan,Feng Guan-ping. Continuous-wave ultrasonic Doppler method for pipe-flow measurements[J],2010, 2010.
APA	Luo Shou-nan,Liu Yan,&Feng Guan-ping.(2010).Continuous-wave ultrasonic Doppler method for pipe-flow measurements..
MLA	Luo Shou-nan,et al."Continuous-wave ultrasonic Doppler method for pipe-flow measurements".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。