公开(公告)号：US20090064770A1

公开(公告)日：2009-03-12

申请号：US12209227

申请日：2008-09-12

申请人： Age A. Olsen ,  Jostein Jacobsen ,  Tore Magne Halas Skar ,  Petter Norli ,  Ashild Bergh ,  Nils-Otto Negard ,  Steinar Lag

发明人： Age A. Olsen ,  Jostein Jacobsen ,  Tore Magne Halas Skar ,  Petter Norli ,  Ashild Bergh ,  Nils-Otto Negard ,  Steinar Lag

IPC分类号： G01N5/02

CPC分类号： G01N29/46 ,  G01N29/11 ,  G01N29/4454 ,  G01N2291/0253 ,  G01N2291/02845 ,  G01N2291/044 ,  G01N2291/2634

摘要： An apparatus and a method for determining a moisture ingress in an insulating layer surrounding a pipe, the insulating layer being surrounded by a tubular jacket. The apparatus includes an acoustic transducer in communication with an exciter adapted to provide a brief and broad banded acoustic signal which includes frequencies which by their propagation in the material of the jacket has a wavelength which corresponds to twice the thickness of the jacket or an odd multiple of twice the thickness of the jacket, and to process a reverberation signal emitted from the jacket in response to sending into the jacket the brief and broad banded output signal from the transducer. The signal processor is adapted to make a frequency analysis of the received reverberation signal for producing a frequency response curve, to establish features of the frequency response curve which are characteristic of a moisture content in the insulation material on the inside of the jacket, and to output an indication being specific for the moisture ingress.

摘要翻译： 一种用于确定围绕管道的绝缘层中的水分进入的装置和方法，所述绝缘层被管状护套包围。 该装置包括与激励器通信的声换能器，其适于提供简短且宽带的声信号，该声信号包括通过其在护套材料中传播的波长对应于护套厚度的两倍或奇数倍的频率的频率 是套管厚度的两倍，并且响应于将来自换能器的简短和宽带输出信号发送到夹套中来处理从护套发射的混响信号。 信号处理器适于对接收到的混响信号进行频率分析以产生频率响应曲线，以建立频率响应曲线的特征，其特征在于外套上的绝缘材料中的含水量，并且 输出特定于水分进入的指示。

公开(公告)号：US08677823B2

公开(公告)日：2014-03-25

申请号：US13006478

申请日：2011-01-14

申请人： Age A. Olsen ,  Jostein Jacobsen ,  Tore Magne Halas Skar ,  Petter Norli ,  Ashild Bergh ,  Nils-Otto Negard ,  Steinar Lag

发明人： Age A. Olsen ,  Jostein Jacobsen ,  Tore Magne Halas Skar ,  Petter Norli ,  Ashild Bergh ,  Nils-Otto Negard ,  Steinar Lag

IPC分类号： G01N29/04

CPC分类号： G01B17/02 ,  G01N29/12 ,  G01N29/46 ,  G01N2291/02854 ,  G01N2291/2636

摘要： An acoustic apparatus adapted to operate in a gas filled space from a first side of an object to be measured for making a non-contact thickness measurement thereof includes an electro acoustic transducer, a transceiver coupled with the electro acoustic transducer and adapted to excite electro acoustic transducer to output an acoustic signal towards the object to be measured and receive an acoustic response signal therefrom, and a signal processor adapted to process the response signal and determine a thickness of the object. The electroacoustic transducer has a transducer-to-gas acoustic interface, and the transceiver is adapted to operate the electroacoustic transducer so as to emit into a gas filled gap an acoustic broad band pulse towards the object and to receive an acoustic resonance response signal in the acoustic response signal at a level that allows acquisition of the resonance response signal above a predetermined signal to noise level.

摘要翻译： 一种适于在待测量物体的第一侧的气体填充空间中进行非接触厚度测量的声学设备包括电声换能器，与电声换能器耦合的收发器并适于激发电声 换能器，以向待测对象输出声信号，并从其接收声响应信号;以及信号处理器，适于处理响应信号并确定对象的厚度。 电声换能器具有换能器到气体声学接口，并且收发器适于操作电声换能器，以朝向物体发射声学宽带脉冲，并且在该气声换能器中接收声共振响应信号 声学响应信号处于允许将谐振响应信号采集到高于预定信噪比水平的水平上。

公开(公告)号：US20090071253A1

公开(公告)日：2009-03-19

申请号：US12209221

申请日：2008-09-12

申请人： Age A. Olsen ,  Jostein Jacobsen ,  Tore Magne Halas Skar ,  Petter Norli ,  Ashild Bergh ,  Nils-Otto Negard ,  Steinar Lag

发明人： Age A. Olsen ,  Jostein Jacobsen ,  Tore Magne Halas Skar ,  Petter Norli ,  Ashild Bergh ,  Nils-Otto Negard ,  Steinar Lag

IPC分类号： G01N29/04

CPC分类号： G01B17/02 ,  G01N29/12 ,  G01N29/46 ,  G01N2291/02854 ,  G01N2291/2636

摘要： An acoustic apparatus adapted to operate in a gas filled space from a first side of an object to be measured for making a non-contact thickness measurement thereof includes an electro acoustic transducer, a transceiver coupled with the electro acoustic transducer and adapted to excite electro acoustic transducer to output an acoustic signal towards the object to be measured and receive an acoustic response signal therefrom, and a signal processor adapted to process the response signal and determine a thickness of the object. The electroacoustic transducer has a transducer-to-gas acoustic interface, and the transceiver is adapted to operate the electroacoustic transducer so as to emit into a gas filled gap an acoustic broad band pulse towards the object and to receive an acoustic resonance response signal in the acoustic response signal at a level that allows acquisition of the resonance response signal above a predetermined signal to noise level.

摘要翻译： 一种适于在待测量物体的第一侧的气体填充空间中进行非接触厚度测量的声学设备包括电声换能器，与电声换能器耦合的收发器并适于激发电声 换能器，以向待测对象输出声信号，并从其接收声响应信号;以及信号处理器，适于处理响应信号并确定对象的厚度。 电声换能器具有换能器到气体声学接口，并且收发器适于操作电声换能器，以朝向物体发射声学宽带脉冲，并且在该气声换能器中接收声共振响应信号 声学响应信号处于允许将谐振响应信号采集到高于预定信噪比水平的水平上。