发明名称 |
ULTRASONIC FLOW METER WITH DIGITALLY UNDER-SAMPLED FLOW MEASUREMENTS |
摘要 |
<p>The invention relates to a method of operating an ultrasonic flow meter by digitally sampling received signals. Acoustic wave packets are transmitted through a measuring distance in opposite directions, and the received signals are digitized at a sampling frequency being below the Nyquist-limit of two times the signal frequency of the wave packet to generate digitized under-sampled signals 31. From the digitized under-sampled signals, the difference in propagation time along the measuring distance is determined.</p> |
申请公布号 |
EP2786100(A1) |
申请公布日期 |
2014.10.08 |
申请号 |
EP20120853865 |
申请日期 |
2012.11.30 |
申请人 |
KAMSTRUP A/S |
发明人 |
SØRENSEN, JENS, LYKKE;BENDIXEN, PAUL, MARTIN |
分类号 |
G01F1/66 |
主分类号 |
G01F1/66 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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