公开(公告)号：EP1886132A1

公开(公告)日：2008-02-13

申请号：EP06777265.7

申请日：2006-06-02

申请人： SIEMENS AKTIENGESELLSCHAFT

发明人： HAUPTMANN, Peter ,  PÜTTMER, Alf ,  SCHÄFER, Robert

IPC分类号： G01N29/028 ,  G01N29/024 ,  G01N29/44 ,  G01N29/48 ,  G01N29/34 ,  G01N29/42 ,  G01N9/24

CPC分类号： G01N29/4418 ,  G01F1/66 ,  G01F1/668 ,  G01N9/002 ,  G01N29/024 ,  G01N29/028 ,  G01N29/34 ,  G01N29/42 ,  G01N29/48 ,  G01N2291/011 ,  G01N2291/015 ,  G01N2291/018 ,  G01N2291/021 ,  G01N2291/022 ,  G01N2291/02818 ,  G01N2291/02836 ,  G01N2291/02854 ,  G01N2291/048 ,  G01N2291/102

摘要： The invention relates to a method and device for measurement of the specific density of a gaseous or liquid medium, whereby a pulsed acoustic signal (6) is injected into the measured medium by means of a transmitting transducer (2), the signal is detected by a receiver transducer (3), after passing over a measured path, whereupon the acoustic impedance Z is automatically determined in an analytical device (4) by comparison of a curve for the currently measured received signal with reference curves, predetermined for various values of the acoustic impedances stored for each value of the acoustic impedance, whereby the propagation speed c of the acoustic signal in the medium is determined and the density p of the medium is calculated as the quotient from the acoustic impedance Z and the propagation speed c. The method is preferably of application to an ultrasound mass flow measurement device and hence has the advantage that no additional density sensor is required, nevertheless permitting a robust and precise measurement of density.

公开(公告)号：EP2135067A1

公开(公告)日：2009-12-23

申请号：EP07723335.1

申请日：2007-03-16

申请人： Siemens Aktiengesellschaft

发明人： SCHÄFER, Robert ,  ENS, Wolfgang ,  HAUPTMANN, Peter ,  BETTENHAUSEN, Kurt Dirk ,  GRIEB, Herbert

IPC分类号： G01N29/024 ,  G01N29/028 ,  G01N29/34 ,  G01N29/44 ,  G01N29/46 ,  G01F1/66 ,  G01N9/24

CPC分类号： G01N29/024 ,  G01N9/24 ,  G01N29/028 ,  G01N29/348 ,  G01N29/4472 ,  G01N29/46 ,  G01N2291/011 ,  G01N2291/018 ,  G01N2291/02818 ,  G01N2291/056 ,  G01N2291/102

摘要： The invention relates to a method, and to a device working according to the method, for the determination of a density profile of a medium (12) located in a volume (10), comprising the following steps: a signal in the form of a pulse of defined bandwidth, in particular an ultrasound pulse (18), is sent through the medium (12), wherein a spectral composition of the signal changes at least with a local density ρ(x) of the medium (12), wherein the local density ρ(x) is the result of the quotient of two frequency- and location-dependent values, namely acoustic impedance Z(ω, x) and sound velocity c(ω, x), and wherein the density profile is the result of a combination of the local densities ρ(x) that are determined.

公开(公告)号：EP2137541A1

公开(公告)日：2009-12-30

申请号：EP07723336.9

申请日：2007-03-16

申请人： Siemens Aktiengesellschaft

发明人： BETTENHAUSEN, Kurt Dirk ,  ENS, Wolfgang ,  GRIEB, Herbert ,  HAUPTMANN, Peter ,  SCHÄFER, Robert

IPC分类号： G01P5/12 ,  G01P21/02 ,  G01F25/00 ,  G01F1/684

CPC分类号： G01P21/025 ,  G01F1/696 ,  G01F25/0007 ,  G01P5/12

摘要： The invention relates to a method and a device operating according to said method for measuring flow velocities. A basic calibration is performed independently of the device, by means of which coefficients are determined that represent an influence of variables to which the device is subjected during measurement, for example, properties of the flowing medium and flow velocity. For operating the device, a device-specific operational calibration is performed, wherein a device-specific transmission factor is determined. Thus, during operation of the device, no further calibration, even when changing the medium, is necessary, due to the device-independent coefficients and the device-specific transmission factors being known.

公开(公告)号：EP2147287B1

公开(公告)日：2018-01-31

申请号：EP07725432.4

申请日：2007-05-22

申请人： Siemens Aktiengesellschaft

发明人： HAUPTMANN, Peter ,  PÜTTMER, Alf ,  SCHORB, Herbert ,  SCHÄFER, Robert

IPC分类号： G01H3/00

CPC分类号： G01H3/005

公开(公告)号：EP2135067B1

公开(公告)日：2012-12-12

申请号：EP07723335.1

申请日：2007-03-16

申请人： Siemens Aktiengesellschaft

发明人： SCHÄFER, Robert ,  ENS, Wolfgang ,  HAUPTMANN, Peter ,  BETTENHAUSEN, Kurt Dirk ,  GRIEB, Herbert

IPC分类号： G01N29/024 ,  G01N29/028 ,  G01N29/34 ,  G01N29/44 ,  G01N29/46 ,  G01F1/66 ,  G01N9/24

CPC分类号： G01N29/024 ,  G01N9/24 ,  G01N29/028 ,  G01N29/348 ,  G01N29/4472 ,  G01N29/46 ,  G01N2291/011 ,  G01N2291/018 ,  G01N2291/02818 ,  G01N2291/056 ,  G01N2291/102

公开(公告)号：EP2147287A1

公开(公告)日：2010-01-27

申请号：EP07725432.4

申请日：2007-05-22

申请人： Siemens Aktiengesellschaft

发明人： HAUPTMANN, Peter ,  PÜTTMER, Alf ,  SCHORB, Herbert ,  SCHÄFER, Robert

IPC分类号： G01H3/00

CPC分类号： G01H3/005

摘要： The invention relates to a method for the determination of deposits on an ultrasonic transducer (10) during the operation thereof, wherein the conductance of the ultrasonic transducer (10) is determined by means of impedance spectroscopy, wherein the conductance is used to measure an attenuation (R) and a resonance (Ω) of the ultrasonic transducer (10). The resonance (Ω) is plotted over the attenuation (R) in a coordinate system and, from the resulting location points of said resonance (Ω), possible deposits are deduced.

摘要翻译： 本发明在其操作涉及用于沉积在在超声换能器（10）的测定方法，worin超声换能器的电导（10）是确定性的通过阻抗谱的手段开采，worin电导用于测量衰减的 （R）和所述超声换能器（10）的共振（O）。 共振（O）中的坐标系绘制在衰减（R）和从所述共振（O）的所得到的位置点，可能的沉积物推导。