Methods and sensors for the detection of active carbon filters degradation with EMIS-ECIS PWAS
    82.
    发明授权
    Methods and sensors for the detection of active carbon filters degradation with EMIS-ECIS PWAS 有权
    用EMIS-ECIS PWAS检测活性炭过滤器降解的方法和传感器

    公开(公告)号:US08814996B2

    公开(公告)日:2014-08-26

    申请号:US13549955

    申请日:2012-07-16

    IPC分类号: B01D53/02

    摘要: Active carbon filters and systems that are operative to detect active carbon filter degradations are provided. The active carbon filter can include a carbon filter comprising activated carbon and defining a filter surface; a first piezoelectric wafer active sensor on the filter surface that is electrically isolated from the carbon filter; and a second piezoelectric wafer active sensor on the filter surface that is electrically connected to the filter surface; and an impedance monitoring device electrically connected to the first piezoelectric wafer active sensor and the second piezoelectric wafer active sensor. Methods are also disclosed for determining if any degradation has occurred in an active carbon filter.

    摘要翻译: 提供了活性炭过滤器和可用于检测活性炭过滤器降解的系统。 活性炭过滤器可以包括包含活性炭并限定过滤表面的碳过滤器; 在过滤器表面上与碳过滤器电隔离的第一压电晶片有源传感器; 以及与过滤器表面电连接的过滤器表面上的第二压电晶片有源传感器; 以及电连接到第一压电晶片有源传感器和第二压电晶片有源传感器的阻抗监视装置。 还公开了用于确定活性炭过滤器中是否发生任何降解的方法。

    Control Valve Monitoring System
    83.
    发明申请
    Control Valve Monitoring System 有权
    控制阀监控系统

    公开(公告)号:US20130019683A1

    公开(公告)日:2013-01-24

    申请号:US13552379

    申请日:2012-07-18

    摘要: A control valve monitoring system is disclosed. The control valve monitoring system includes at least one sensor connected to one of a valve stem or valve shaft, and the at least one sensor detects a change in mechanical integrity of one of the valve stem or valve shaft. A device for providing data regarding the change in mechanical integrity of one of the valve stem or valve shaft is provided, allowing maintenance of the valve shaft or valve stem to be conducted in an efficient manner.

    摘要翻译: 公开了一种控制阀监控系统。 控制阀监测系统包括连接到阀杆或阀轴之一的至少一个传感器,并且所述至少一个传感器检测阀杆或阀轴之一的机械完整性的变化。 提供了一种用于提供关于阀杆或阀轴中的一个的机械完整性变化的数据的装置,允许以有效的方式维持阀轴或阀杆。

    Differential Ultrasonic Waveguide Cure Monitoring Probe
    84.
    发明申请
    Differential Ultrasonic Waveguide Cure Monitoring Probe 有权
    差分超声波波导固化监测探头

    公开(公告)号:US20090314088A1

    公开(公告)日:2009-12-24

    申请号:US12481141

    申请日:2009-06-09

    IPC分类号: G01N29/04

    摘要: The present invention is seen to provide a new methodology, testing system designs and concept to enable in situ real time monitoring of the cure process. Apparatus, system, and method for the non-destructive, in situ monitoring of the time dependent curing of advanced materials using one or more differential ultrasonic waveguide cure monitoring probes. A differential ultrasonic waveguide cure monitoring probe in direct contact with the material to be cured and providing in situ monitoring of the cure process to enable assessment of the degree of cure or cure level in a non-cure related signal variances (e.g., temperature) independent calibrated response manner. A differential ultrasonic waveguide cure monitoring probe including a transducer coupled to a waveguide and incorporating correction and calibration methodology to accurately and reproducibly monitor the cure process and enable assessment of cure level via ultrasonic reflection measurements. The amplitude of the corrected interface response signal reflected from the probe-resin interface indicating changes in the modulus of the material during the cure.

    摘要翻译: 本发明可以提供一种新的方法,测试系统的设计和概念,以实现对固化过程的实时监测。 用于使用一个或多个差分超声波波导固化监测探针对先进材料进行时间依赖固化的非破坏性,现场监测的装置,系统和方法。 差示超声波波导固化监测探头与要固化的材料直接接触,并提供固化过程的现场监测,以便能够在非固化相关信号方差(例如温度)独立性下评估固化程度或固化水平 校准响应方式。 差示超声波波导固化监测探头,其包括耦合到波导的传感器并且包含校正和校准方法以精确和可重复地监测固化过程,并且能够通过超声波反射测量来评估固化水平。 校正的界面响应信号的幅度从探针 - 树脂界面反射,指示在固化期间材料的模量的变化。

    Acoustic impedance measuring apparatus using ultrasonic waves
    86.
    发明授权
    Acoustic impedance measuring apparatus using ultrasonic waves 失效
    使用超声波的声阻抗测量装置

    公开(公告)号:US06298726B1

    公开(公告)日:2001-10-09

    申请号:US09329024

    申请日:1999-06-09

    IPC分类号: G01N2900

    摘要: An acoustic impedance measuring apparatus emits ultrasonic waves to a target measurement object and measures the acoustic impedance of the target measurement object by ultrasonic waves fed back from the target measurement object. This acoustic impedance measuring apparatus includes an ultrasonic transducer, pulse signal generator, signal separator, frequency converter, parameter extractor, and acoustic impedance calculator. The pulse signal generator generates a pulse signal to be applied to the ultrasonic transducer. The signal separator separates, from an output from the ultrasonic transducer, an immediate ultrasonic response signal resulting from ultrasonic waves reflected by the surface of the target measurement object. The frequency converter obtains the frequency characteristics of the immediate ultrasonic response signal. The parameter extractor extracts predetermined parameters from the frequency characteristics. The acoustic impedance calculator calculates the acoustic impedance of the target measurement object by using the parameters extracted by the parameter extractor.

    摘要翻译: 声阻抗测量装置向目标测量对象发射超声波,并且通过从目标测量对象反馈的超声波来测量目标测量对象的声阻抗。 该声阻抗测量装置包括超声波换能器,脉冲信号发生器,信号分离器,变频器,参数提取器和声阻抗计算器。 脉冲信号发生器产生要施加到超声波换能器的脉冲信号。 信号分离器与超声波换能器的输出分离由由目标测量对象的表面反射的超声波产生的立即超声响应信号。 变频器获得立即超声波响应信号的频率特性。 参数提取器从频率特性中提取预定参数。 声阻抗计算器通过使用由参数提取器提取的参数来计算目标测量对象的声阻抗。

    Method and apparatus for ultrasonic pipeline inspection
    87.
    发明授权
    Method and apparatus for ultrasonic pipeline inspection 失效
    超声波管道检查方法和装置

    公开(公告)号:US5460046A

    公开(公告)日:1995-10-24

    申请号:US248651

    申请日:1994-05-19

    摘要: A method and an apparatus are provided for measuring the wall thickness of a pipeline through which a fluid flows, the pipeline having an interior and exterior surface. The apparatus has a pig body supported by elastomeric cups to thereby cause the pig body to move by fluid flow through the pipeline. The pig body supports a plurality of multi-element transducers. Each transducer is made up of a large number of independent elongated rod-like crystal elements separated by a polymer, each having side walls, a front face and a bottom face. The rod-like elements are arranged so that the side walls are adjacent but mechanically isolated from each other, such as by an epoxy, with the front faces and bottom faces providing transducer front and bottom surfaces. A front metallic film and a bottom metallic film are applied to the front and the bottom surfaces. Each transducer is configured to have an impedance that closely matches the impedance of the pipeline fluid. Each transducer is activated by periodic electrical pulses to cause transmission of an acoustic signal in the pipeline fluid that are reflected by the pipeline interior and exterior walls. A plurality of multiple ultrasonic reflections from the pipe interior and exterior walls for each ultrasonic pulse produced by each transducer is analyzed employing a software algorithm embedded in the electronics within the pig body to provide a measurement of pipe wall thickness. By means of an odometer attached to the pig body, electrical signals are provided that reveal anomalies in the wall thickness of the pipeline relative to the distance traveled by the pig body so that an operator can thereby determine the location in the pipeline wall thickness anomalies.

    摘要翻译: 提供了一种用于测量流体流过的管道的壁厚的方法和装置,该管道具有内部和外部表面。 该装置具有由弹性体杯支撑的猪体,从而使猪体通过流体流动通过管道移动。 猪体支撑多个多元件换能器。 每个换能器由大量由聚合物隔开的独立细长棒状晶体元件组成,每个具有侧壁,前表面和底面。 杆状元件布置成使得侧壁相邻但机械地彼此隔离,例如通过环氧树脂,其中前表面和底面提供换能器的前表面和底表面。 将前金属膜和底金属膜施加到前表面和底表面。 每个换能器被配置成具有与管道流体的阻抗紧密匹配的阻抗。 每个换能器由周期性的电脉冲激活,以使得管道流体中的声信号被管道内部和外壁反射。 使用嵌入在猪体内的电子装置中的软件算法来分析由每个换能器产生的每个超声波脉冲的来自管内壁和外壁的多个超声波反射,以提供管壁厚度的测量。 通过连接到猪体的里程表,提供电信号,其显示管道相对于猪体行进距离的壁厚的异常,从而操作者可以确定管道壁厚异常中的位置。

    Shear-type vibration-ultrasonic composite sensor and measuring device

    公开(公告)号:US11841342B2

    公开(公告)日:2023-12-12

    申请号:US17891742

    申请日:2022-08-19

    IPC分类号: G01N29/24 G01N29/09 G01N29/04

    摘要: The present disclosure discloses a shear-type vibration-ultrasonic composite sensor and a measuring device. In the shear-type vibration-ultrasonic composite sensor, a metal matching layer includes an insulating layer arranged on a lower surface and a supporting pillar arranged on an upper surface, the metal matching layer is in contact with a to-be-detected object via the insulating layer, a first negative electrode face of a first normal piezoelectric element is attached to one side of the metal matching layer, a first positive electrode face of the first normal piezoelectric element is attached to a second positive electrode face of a second normal piezoelectric element, a second negative electrode face is attached to a first surface of a backing block, and a second surface of the backing block is provided with a metal housing.