公开(公告)号：US06681635B1

公开(公告)日：2004-01-27

申请号：US09719555

申请日：2000-12-26

申请人： Wilhelm Henricus Jurriaan Van Schaik

发明人： Wilhelm Henricus Jurriaan Van Schaik

IPC分类号： G01N2400

CPC分类号： G01N29/024 ,  G01N29/40 ,  G01N2291/02881 ,  G01N2291/045

摘要： A method to determine a physical quantity within a measuring space by means of acoustic transit time measurement uses an acoustic transducer as a transmitter and an acoustic transducer as a receiver. The two functions can also be combined in a single transducer. The acoustic transit time measurement involves a time-dependent comparison between the shape of an acoustic transmitted signal selected at least partly on the basis of the type of signal processing to be used and at least two points in an acoustic received signal and/or a signal derived from that received signal again selected at least partly on the basis of the type of processing to be used. An apparatus for this method could be equipped with an acoustic signal-generating transducer, an acoustic signal detection transducer, a signal processing device which selects measuring points from the signal, and detection algorithm adapted to the shape of the signal.

摘要翻译： 通过声学传播时间测量来确定测量空间内的物理量的方法使用声换能器作为发射器和声换能器作为接收器。 这两个功能也可以组合在单个传感器中。 声学传播时间测量涉及至少部分地基于要使用的信号处理的类型和声接收信号中的至少两个点和/或信号的信号来选择的声发射信号的形状之间的时间相关比较 从至少部分地基于要使用的处理的类型再次选择的接收信号导出。 用于该方法的装置可以配备有声信号生成传感器，声信号检测传感器，从信号中选择测量点的信号处理装置，以及适合信号形状的检测算法。