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1. 发明授权

US5625150A Integrated acoustic leak detection sensor subsystem 失效
标题翻译：综合声学检漏传感器子系统
公开(公告)号：US5625150A
公开(公告)日：1997-04-29
申请号：US292675
申请日：1994-08-18
申请人： David A. Greene , Rosemary A. Greene , Donald C. Gaubatz
发明人： David A. Greene , Rosemary A. Greene , Donald C. Gaubatz
IPC分类号： G01N29/00 , G01H17/00 , G01M3/04 , G01M3/24 , G01N29/14 , G01N29/22 , G01N29/24 , G01N29/28 , G21C17/003 , G01H11/00 , G01M3/00 , G21C17/00
CPC分类号： G01N29/228 , G01N29/14 , G01N29/2462 , G01N29/28 , G01N2291/106
摘要： A sensor system for mapping absolute acoustic noise intensity in a three-dimensional acoustic noise field. Localized noise sources within a vessel are extracted using a distant array of transducers mounted on the vessel wall. The absolute intensity can be measured even when totally masked by background noise at the transducer locations. The system includes an integrated transducer installation. Each transducer is an accelerometer which is mounted on the vessel wall using a rigid attachment rod which serves as an ultrasonic waveguide. The output of each transducer is split into low- and high-frequency components, the low-frequency component being a function of the vibrational displacement of the localized portion of the vessel wall and the high-frequency component being a function of the vibrational/ultrasonic waves propagating through the localized portion of the vessel wall.
摘要翻译：一种用于映射三维声学噪声场中绝对声学噪声强度的传感器系统。使用安装在血管壁上的遥感传感器阵列提取血管内的局部噪声源。即使在传感器位置处完全被背景噪声掩蔽的情况下，也可以测量绝对强度。该系统包括一个集成的换能器安装。每个换能器是加速度计，其使用用作超声波导的刚性附接杆安装在血管壁上。每个换能器的输出被分成低频和高频分量，低频分量是血管壁的局部部分的振动位移的函数，而高频分量是振动/超声的函数波通过血管壁的局部部分传播。

2. 发明授权

US5533383A Integrated acoustic leak detection processing system 失效
标题翻译：综合声学检漏处理系统
公开(公告)号：US5533383A
公开(公告)日：1996-07-09
申请号：US292656
申请日：1994-08-18
申请人： David A. Greene , Rosemary A. Greene , Donald C. Gaubatz
发明人： David A. Greene , Rosemary A. Greene , Donald C. Gaubatz
IPC分类号： G01N29/00 , G01H17/00 , G01M3/04 , G01M3/24 , G01N29/036 , G01N29/14 , G21C17/003 , G21C17/025 , G21C17/007
CPC分类号： G01N29/036 , G01M3/24 , G01N29/14 , G01N2291/02836 , G01N2291/106
摘要： A system for mapping absolute acoustic noise intensity in a three-dimensional acoustic noise field, and using three-dimensional absolute noise intensities to infer operational or performance characteristics of components or structures within the monitored field. Localized noise sources are extracted using a distant array of transducers, and the absolute intensity can be measured even when totally masked by background noise at the transducer locations. The system includes an integrated sensor installation; a neural network detection system algorithm; a zoom system to precisely examine a small region in the steam generator vessel; a fuzzy logic system detection algorithm; and an expert detection system. The signal processing subsystem operates at three different levels of detection. At the top level of detection a trained neural network system monitors the vessel length for any indication of a leak. The proposed approach uses discriminators which do not require any beamforming of the sensor signals. The presence of a leak and the general location in the vessel is determined using a fuzzy logic expert system. The leak indications are passed to a second level of detection: a beamformed system which will monitor the indicated portion of the vessel. A third level of detection systematically monitors the tagged locations to determine if a leak is really present, remaining on the specific locations to detect a leak above the defined threshold to a high degree of accuracy. The actions to be taken will be controlled by a second fuzzy logic expert interface controller.
摘要翻译：一种用于映射三维声学噪声场中的绝对声学噪声强度的系统，并且使用三维绝对噪声强度来推断所监视的场内的组件或结构的操作或性能特征。使用遥感器阵列提取局部噪声源，即使在传感器位置处完全被背景噪声掩蔽也可以测量绝对强度。该系统包括一个集成传感器安装; 神经网络检测系统算法; 精确检查蒸汽发生器容器中的小区域的变焦系统; 模糊逻辑系统检测算法; 和专家检测系统。信号处理子系统以三种不同的检测级别运行。在最高级别的检测中，训练有素的神经网络系统监测血管长度，以了解任何泄漏迹象。所提出的方法使用不需要传感器信号的任何波束成形的鉴别器。使用模糊逻辑专家系统确定泄漏的存在和容器中的一般位置。泄漏指示被传递到第二级检测：波束形成系统，其将监测容器的指示部分。第三级检测系统地监测标记位置，以确定泄漏是否真实存在，保留在特定位置以高精度检测高于定义阈值的泄漏。要采取的行动将由第二个模糊逻辑专家接口控制器控制。

3. 发明授权

US5517537A Integrated acoustic leak detection beamforming system 失效
标题翻译：集成声学泄漏检测波束成形系统
公开(公告)号：US5517537A
公开(公告)日：1996-05-14
申请号：US292320
申请日：1994-08-18
申请人： David A. Greene , Rosemary A. Greene , Donald C. Gaubatz
发明人： David A. Greene , Rosemary A. Greene , Donald C. Gaubatz
IPC分类号： G01M99/00 , G01H17/00 , G01M3/04 , G01M3/24 , G01N29/00 , G21C17/003 , G21C17/00
CPC分类号： G01M3/24
摘要： A system for mapping absolute acoustic noise intensity in a three-dimensional acoustic noise field, and using three-dimensional absolute noise intensities to infer operational or performance characteristics of components or structures within the monitored field. Localized noise sources are extracted using a distant array of transducers, and the absolute intensity can be measured even when totally masked by background noise at the transducer locations. The system includes an integrated sensor installation; a neural network detection system algorithm; a zoom system to precisely examine a small region in the steam generator vessel; a fuzzy logic system detection algorithm; and an expert detection system. The signal processing subsystem operates at three different levels of detection. At the top level of detection a trained neural network system monitors the vessel length for any indication of a leak. The proposed approach uses discriminators which do not require any beamforming of the sensor signals. The presence of a leak and its general location in the vessel is determined using a fuzzy logic expert system. The leak indications are passed to a second level of detection: a beamformed system which will monitor the indicated portion of the vessel. A third level of detection systematically monitors the tagged locations to determine if a leak is really present, remaining on the specific locations to detect a leak above the defined threshold to a high degree of accuracy. The actions to be taken will be controlled by a second fuzzy logic expert interface controller.
摘要翻译：一种用于映射三维声学噪声场中的绝对声学噪声强度的系统，并且使用三维绝对噪声强度来推断所监视的场内的组件或结构的操作或性能特征。使用遥感器阵列提取局部噪声源，即使在传感器位置处完全被背景噪声掩蔽也可以测量绝对强度。该系统包括一个集成传感器安装; 神经网络检测系统算法; 精确检查蒸汽发生器容器中的小区域的变焦系统; 模糊逻辑系统检测算法; 和专家检测系统。信号处理子系统以三种不同的检测级别运行。在最高级别的检测中，训练有素的神经网络系统监测血管长度，以了解任何泄漏迹象。所提出的方法使用不需要传感器信号的任何波束成形的鉴别器。使用模糊逻辑专家系统确定泄漏的存在及其在船舶中的一般位置。泄漏指示被传递到第二级检测：波束形成系统，其将监测容器的指示部分。第三级检测系统地监测标记位置，以确定泄漏是否真实存在，保留在特定位置以高精度检测高于定义阈值的泄漏。要采取的行动将由第二个模糊逻辑专家接口控制器控制。

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