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1. 发明授权

US06595070B1 Acoustic flow meters 失效
标题翻译：声流计
公开(公告)号：US06595070B1
公开(公告)日：2003-07-22
申请号：US09926570
申请日：2002-01-11
申请人： Trevor Cole
发明人： Trevor Cole
IPC分类号： G01F166
CPC分类号： G01P5/245 , G01F1/667
摘要： Acoustic flow meters are used for the measurement of flow velocity of fluids. They have particular application in meters for gas and water in pipelines. The meter includes a tube fitted with three or more acoustic transducers distributed along its length and arranged to transmit wave packets up and down between at least two pairs of the acoustic transducers. The wave packets comprise a signal including zero crossings spaced apart by a packet period determined by a known packet frequency. The flow meter also includes measurement means associated with the transducers to make first measurements of received packets, from which the time of arrival of the zero crossings of a received packet can be determined relative to the time of transmission of the packet. A second measurement from which a particular zero crossing in the transmitted packet can be identified in the received packet. And calculation means to determine the velocity of fluid flow in the tube using the measurements. There is also a method of operation.
摘要翻译：声流计用于测量流体的流速。他们在管道中的气体和水的特别应用在米。仪表包括一个装有三个或更多个沿着其长度分布的声学传感器的管子，并被布置成在至少两对声换能器之间上下传送波包。波分组包括一个信号，该信号包括由已知分组频率确定的分组周期间隔开的零交叉。流量计还包括与换能器相关联的测量装置，以便对接收到的分组进行第一次测量，从而可以相对于分组的传输时间来确定接收分组的过零点的到达时间。在接收到的分组中可以识别发送分组中的特定零交叉的第二测量。并且计算意味着使用测量来确定管中的流体流速。还有一种操作方法。

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