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Investigation on Acoustic Velocity Precise Measurement for Liquid Using Phase Detection Technique(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2009年03期
Page:
79-82
Research Field:
Publishing date:

Info

Title:
Investigation on Acoustic Velocity Precise Measurement for Liquid Using Phase Detection Technique
Author(s):
Pan Wen; Ma Qingyu
School of Physical Science and Technology,Nanjing Normal University,Nanjing 210097,China
Keywords:
phase detection techn ique;  acoustic ve loc itym easurem en t for liqu id;  m ilk concen tration m easurem ent
PACS:
O422.1
DOI:
-
Abstract:
The so lution concentration measurem entw ith the acoustic veloc ity in liquid is an im portant techn ique in Nondestructive Ex am ination ( NDE ). The prec isem easurem ent o f acoustic ve locity fo r liquid us ing phase detec tion techn ique is proposed in the paper. Based on the veloc ity range, the sound propag ation distance is confirm ed to m ake the phase d ifference from 0 to 2P between the set va lues of the max im um and m inim um ve lo cities. The relations among the d istance, the ve lo city ratio and the sound frequency are ana lyzed and the ve lo city can be ca lculated w ith AD de tection. The techniquew as app lied in m ilk concentra tion m easurement, the favo rable results proved that the proposed technique prov ides the accura te and rap id m easurement of acoustic ve loc ity and suggests the pro sperous future in the concentration m easurement for the acid and a lka li or the o ther solutions。

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Last Update: 2013-04-23