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1.发明公开
公开(公告)号：EP4067894A1
公开(公告)日：2022-10-05
申请号：EP21165689.7
申请日：2021-03-29
发明人： VOLKER, Arno Willem Frederik , MERKS-SWOLFS, Egon Jacobus Wilhelmus , VAN DER BURG, Dennis Wilhelmus , DUIJSTER, Adrianus Johannes
摘要： A position dependent wave vector amplitude of vibrations on a surface of a structure is determined from acoustic measurements using a sensing device at distance from the surface. The device contains an array of microphones in a fluid medium outside the structure. Vibrations in the structure, which travel through the structure e.g. as Lamb waves. This generates sound outside the structure by leakage of sound waves from the surface of the structure. The microphones obtain measured signals from the sound. Furthermore, a measurement of such as distance is obtained that depends on the measurement position where the array of microphones is provided. The parameter is used in an inverse wave field propagation model for sound propagation in the fluid medium between the surface of the structure and the array of microphones. The inverse wave field propagation model is applied to the measured signals to obtain a position dependent estimation of the sound amplitude and/or phase at the surface. The wave vector amplitude of the vibration as a function of position on the surface is computed from the position dependent estimation.
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公开(公告)号：EP2279407B1
公开(公告)日：2020-08-12
申请号：EP09746804.5
申请日：2009-05-13
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3.发明公开A TELEMETRY SYSTEM, A PIPE AND A METHOD OF TRANSMITTING INFORMATION 审中-公开电话系统，ROHR UND VERFAHREN ZURÜBERTRAGUNGVON信息
公开(公告)号：EP2737174A1
公开(公告)日：2014-06-04
申请号：EP12740237.8
申请日：2012-07-06
CPC分类号： E21B47/16 , E21B17/006 , G01V11/002 , H04L25/4906
摘要： The invention relates to a telemetry system for use in a pipe having a wall, comprising a transmitter adapted to generate at least one acoustic wave in a frequency range of about 50 - 300kHz and to inject the acoustic wave in the wall of the pipe, wherein the transmitter is further arranged to binary code information conceived to be transmitted with the acoustic wave. The invention further related to a pipe comprising the telemetry system and to a method of transmitting information via a pipe.
摘要翻译： 本发明涉及一种在具有墙壁的管道中使用的遥测系统，包括适于在约25-100kHz的频率范围内产生至少一个声波并将声波注入管壁的发射器，其中 发射机还被布置成被构想为与声波一起传输的二进制码信息。 本发明还涉及一种包括遥测系统的管道以及经由管道传送信息的方法。
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公开(公告)号：EP4384851A1
公开(公告)日：2024-06-19
申请号：EP22754584.5
申请日：2022-08-12
发明人： VAN DER STEEN, Jan-Laurens Pieter Jacobus , PETERS, Laurens Christiaan Johannes Maria , VAN NEER, Paul Louis Maria Joseph , VOLKER, Arno Willem Frederik
CPC分类号： G01S15/8936 , G01S7/5205 , A61B8/4488 , G01N29/262 , G01S15/8977 , A61B8/4209 , A61B8/4455 , A61B8/4477 , A61B8/4483 , A61B8/4494 , G01N29/07 , G01N2291/01120130101 , G01N2291/263820130101 , A61B8/5207
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公开(公告)号：EP4051441A1
公开(公告)日：2022-09-07
申请号：EP20800745.0
申请日：2020-10-29
发明人： VAN NEER, Paul Louis Maria Joseph , VOLKER, Arno Willem Frederik , AKKERMAN, Hylke Broer , GELINCK, Gerwin Hermanus , VAN MOL, Antonius Maria Bernardus
IPC分类号： B06B1/06
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公开(公告)号：EP3986623A1
公开(公告)日：2022-04-27
申请号：EP20744160.1
申请日：2020-06-22
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7.发明公开
公开(公告)号：EP3614098A1
公开(公告)日：2020-02-26
申请号：EP18190803.9
申请日：2018-08-24
摘要： Translations of an object in a plurality of different spatial directions are measured using a plurality of interferometers to detect interference with light that has been reflected from a diffusively reflective surface, preferably using diffuse reflection from the same planar surface to measure in each of the different spatial directions. At least the interferometers that measure translation in directions that are not perpendicular to the surface each comprises a single mode fiber and a collimator configured to transmit the outgoing light to the object successively through the single mode fiber and the collimator, and to collect reflection into the single mode fiber with the collimator both along a same beam direction. It has been found that, when reflection of a beam with a beam direction at an oblique angle to a diffusively reflective surface is used, the interference resulting from translation of the object is due substantially only to translation in the beam direction.
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公开(公告)号：EP2726861B1
公开(公告)日：2017-09-27
申请号：EP12737911.3
申请日：2012-06-29
CPC分类号： G01N29/07 , G01N29/069 , G01N2291/044 , G01S7/52049 , G01S15/8915 , G01S15/8952
摘要： Improved imaging is provided for structures under test that have propagation direction dependent ultrasound propagation speed or position dependent ultrasound propagation speed due to fibrous, coarse grain or single crystalline material. A set reflection points is selected in the structure under test and ultrasound propagation time delays between the reflection point or points on one hand and the plurality of positions on the other hand that fit an observed time delay of the detected reflections are computed. This may be done by means of an iterative method. In the iterative method a synthetically focused ultrasound beam is realized by summing measurements after compensation for propagation time delay from different transmitting transducers to the reflection points. Time delays to receiving transducers are measured from the arrival time of reflections of this synthetically focused ultrasound beam, and the propagation time delay from different transmitting transducers is iteratively adapted until it matches time delays corresponding to the measured arrival times. Time delays to other points in the structure under test are interpolated between the selected reflection points and used in the computation of an image of reflections within the structure under test.
摘要翻译： 针对由于纤维粗粒或单晶材料而具有依赖于传播方向的超声传播速度或取决于位置的超声传播速度的被测结构提供了改进的成像。 在被测结构中选择一组反射点，并且一方面反射点或多个点与另一方面多个位置之间的超声传播时间延迟计算出适合观测到的反射的观测时间延迟。 这可以通过迭代方法完成。 在迭代方法中，合成聚焦的超声波束通过在补偿从不同的发射换能器到反射点的传播时间延迟之后对测量进行求和来实现。 从这个合成聚焦的超声波束的反射到达时间测量接收换能器的时间延迟，并且迭代地调整来自不同发射换能器的传播时间延迟直到它匹配对应于所测量的到达时间的时间延迟。 被测结构中其他点的时间延迟被插值到所选反射点之间，并用于计算被测结构内的反射图像。
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9.发明授权
公开(公告)号：EP2342901B1
公开(公告)日：2014-01-15
申请号：EP09788356.5
申请日：2009-10-05
IPC分类号： H04Q9/00
CPC分类号： H04Q9/00 , H04Q2209/40 , H04Q2209/75 , H04Q2209/756
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10.发明公开
公开(公告)号：EP2440829A1
公开(公告)日：2012-04-18
申请号：EP10728398.8
申请日：2010-06-08
发明人： VOLKER, Arno Willem Frederik , VERSCHOOR, Robert Iman , KOEK, Erik Alexander , VAN DEN BERG, Ronald Peter
摘要： Method and system for assessing corrosion and/or degradation of a pipeline for the transportation of any medium, comprising an array of local sensor modules over the length of the pipeline and arranged for measuring local temperature and humidity values at the pipeline and means for transmitting those values, along with sensor module identifiers, to processing means, as well as means for receiving the sensor module identifiers and local temperature and humidity values measured at the pipeline and inputting them into assessment means arranged for assessing local indicators related to the local corrosion and/or degradation of the pipeline. Wireless transmission means may be used for transmitting the values, along with the sensor module identifiers, to the processing means. The local sensor modules may comprise means for harvesting energy from sunlight and/or temperature differences between the pipeline and its environment.
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