公开(公告)号：US20090093977A1

公开(公告)日：2009-04-09

申请号：US11921259

申请日：2006-06-02

申请人： Peter Hauptmann ,  Alf Puttmer ,  Robert Schafer

发明人： Peter Hauptmann ,  Alf Puttmer ,  Robert Schafer

IPC分类号： G01N9/36

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： There is described a method and device for measurement of the specific density of a gaseous or liquid medium, whereby a pulsed acoustic signal is injected into the measured medium by means of a transmitting transducer, the signal is detected by a receiver transducer, after passing over a measured path, whereupon the acoustic impedance Z is automatically determined in an analytical device 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.

摘要翻译： 描述了用于测量气体或液体介质的比浓度的方法和装置，由此通过发射换能器将脉冲声信号注入到测量介质中，该信号在经过接收器换能器之后被检测 测量路径，于是通过将当前测量的接收信号的曲线与参考曲线进行比较来自动地在分析装置中确定声阻抗Z，该参考曲线是针对为每个声阻抗值存储的声阻抗的各种值所预先设定的， 确定介质中的声学信号的传播速度c，并且计算介质的密度p作为来自声阻抗Z和传播速度c的商。 该方法优选地应用于超声质量流量测量装置，因此具有不需要附加的密度传感器的优点，但是允许对密度的鲁棒和精确的测量。

公开(公告)号：US20090090186A1

公开(公告)日：2009-04-09

申请号：US11919857

申请日：2006-05-02

申请人： Edmund Linzenkirchner ,  Alf Puttmer

发明人： Edmund Linzenkirchner ,  Alf Puttmer

IPC分类号： G01H1/00

CPC分类号： G01H1/00

摘要： There is described a diagnosis method and a system comprising a structure-born noise sensor which transmits, in a bandpass filtered manner, a measuring signal based on the mechanical resonance frequency and capacity thereof and on an inductance and an evaluating device in which the frequency, at which the measuring signal level exceeds a predetermined threshold value, is defined and which is used for producing an error signal, when the frequency exceeds a second predetermined threshold value. As far as the diagnosis performance requires a small number of electronic components and a low power supply, the diagnostic can be integrated into existing devices, in particular into process instrumentation field devised for which a restricted quantity of operating power is available. The method and the system can be used for identifying a valve leakage with the aid of an electro-pneumatic positional regulator.

摘要翻译： 描述了一种诊断方法和系统，其包括结构噪声传感器，其以带通滤波的方式基于其机械共振频率和容量以及电感和评估装置发送测量信号，其中频率， 当频率超过第二预定阈值时，定义测量信号电平超过预定阈值，并且用于产生误差信号。 就诊断性能而言，需要少量的电子部件和低电源，诊断可以集成到现有的装置中，特别是设计成能够获得有限的操作功率的过程仪器领域。 该方法和系统可用于借助电动气动位置调节器识别阀门泄漏。

公开(公告)号：US20060179948A1

公开(公告)日：2006-08-17

申请号：US10559369

申请日：2004-05-28

申请人： Wolfgang Ens ,  Alf Puttmer

发明人： Wolfgang Ens ,  Alf Puttmer

IPC分类号： G01H11/08 ,  G01N29/14

CPC分类号： G01M3/24

摘要： An acoustic pick-up, particularly an ultrasonic pick-up for acoustically diagnosing machines, for example, for detecting leakage in valves or for diagnosing positions, comprising a piezoelectric measuring element and an electronic circuit that processes the measurement signal into a form that is suited for transmission to an evaluation device. In order that the acoustic pick-up can function without an external auxiliary power supply, means are provided by means of which auxiliary power required for operating the electronic circuit can be generated from the acoustic signal to be picked up.

公开(公告)号：US20090090185A1

公开(公告)日：2009-04-09

申请号：US11919855

申请日：2006-05-02

申请人： Alf Puttmer

发明人： Alf Puttmer

IPC分类号： G01H17/00

CPC分类号： G01H1/00

摘要： There is described a diagnosis method and system comprising a sensor for structure-borne noise which emits a measuring signal in a bandwidth-filtered manner due to its mechanical resonant frequency, its capacity and an inductance. The system also comprises an evaluation device in which the measuring signal is subsampled measuring signal exceeds a defined threshold value. The system requires only a small number of electronic components and only little power supply capacity, thereby allowing diagnosis to be carried out without complication in existing devices, especially in field devices of process instrumentation for which only a limited amount of operating power is available. The method and system are especially advantageous for the recognition of valve leakage with an electropneumatic position controller.

摘要翻译： 描述了一种诊断方法和系统，其包括用于结构传播噪声的传感器，其由于其机械谐振频率，其容量和电感而以带宽滤波的方式发射测量信号。 该系统还包括其中测量信号被二次采样的评估装置，测量信号超过限定的阈值。 该系统仅需要少量的电子元件，并且只有很少的电源容量，从而允许在现有装置中进行诊断，而不会在现有装置中进行，特别是在只有有限量的操作功率可用的过程仪表的现场设备中。 该方法和系统对于通过电动气动位置控制器识别阀泄漏特别有利。