公开(公告)号：US20160069718A1

公开(公告)日：2016-03-10

申请号：US14652331

申请日：2013-11-25

Applicant: ENDRESS+HAUSER FLOWTEC AG

Inventor： Frank Wandeler ,  Aurele Fleury

IPC: G01F1/66

CPC classification number: G01F1/66 ,  G01F1/667

Abstract: A method for verifying the reliability of ascertained measurement data of an ultrasonic, flow measurement made according to the travel-time difference method, wherein an ultrasonic flow measuring device having at least two ultrasonic transducers is used to transmit and receive ultrasonic signals inclined in or counter to a flow direction of a measured medium. A first ultrasound disturbance signal is registered within a first time window before receiving a first ultrasound wanted signal, which essentially propagates through the measured medium between the transducers. The first ultrasound disturbance signal propagates at least partially in the measured medium between the ultrasonic transducers, wherein a second ultrasound disturbance signal is registered within a second time window before receiving a second ultrasound wanted signal, which essentially propagates through the measured medium between the transducers. The second ultrasound disturbance signal propagates at least partially in the measured medium between the ultrasonic transducers, and the first and second ultrasound wanted signals are associated respectively with two ultrasonic signals, which are sent in opposing directions through the medium. A quality criterion is ascertained for evaluating the measurement uncertainty of a measured value proportional to the travel-time difference ascertained from the first and second ultrasound wanted signals, wherein the ascertaining of the quality criterion includes a difference forming between the first and second disturbance signals.

Abstract translation: 一种用于验证所确定的超声波测量数据的可靠性的方法，根据行程 - 时间差分法进行的流量测量，其中使用具有至少两个超声换能器的超声波流量测量装置来发送和接收倾斜于或反向的超声波信号 到测量介质的流动方向。 在接收第一超声有用信号之前，在第一时间窗口内登记第一超声波干扰信号，该第一超声波有用信号基本上通过测量的介质在换能器之间传播。 所述第一超声波干扰信号至少部分地在所述超声波换能器之间的所测量的介质中传播，其中在接收第二超声有用信号之前，在第二时间窗口内登记第二超声波干扰信号，所述第二超声波有用信号基本上通过所述测量的介质在所述换能器之间传播。 所述第二超声波干扰信号至少部分地在所述超声换能器之间的测量介质中传播，并且所述第一和第二超声有用信号分别与通过所述介质以相反方向发送的两个超声波信号相关联。 确定质量标准用于评估与从第一和第二超声有用信号确定的行进时间差成比例的测量值的测量不确定度，其中质量标准的确定包括在第一和第二干扰信号之间形成的差异。

公开(公告)号：US09885593B2

公开(公告)日：2018-02-06

申请号：US14652331

申请日：2013-11-25

Applicant: Endress + Hauser Flowtec AG

Inventor： Frank Wandeler ,  Aurele Fleury

IPC: G01F1/66

CPC classification number: G01F1/66 ,  G01F1/667

Abstract: A method for verifying the reliability of ascertained measurement data of an ultrasonic, flow measurement made according to the travel-time difference method, wherein an ultrasonic flow measuring device having at least two ultrasonic transducers is used to transmit and receive ultrasonic signals inclined in or counter to a flow direction of a measured medium. A first ultrasound disturbance signal is registered within a first time window before receiving a first ultrasound wanted signal, and a second ultrasound disturbance signal is registered within a second time window before receiving a second ultrasound wanted signal. A quality criterion is ascertained for evaluating the measurement uncertainty of a measured value proportional to the travel-time difference ascertained from the first and second ultrasound wanted signals, wherein the ascertaining of the quality criterion includes a difference forming between the first and second disturbance signals.