-
公开(公告)号：US20230325171A1
公开(公告)日：2023-10-12
申请号：US18024960
申请日：2021-09-10
Inventor： Bastien CHAPUIS , Julien ALBERTINI , Alban TRESARRIEU
CPC classification number: G06F8/65 , B61L23/042 , B61L27/70 , B61L27/53
Abstract: A method for software update of software embedded in an electronic device having a nominal operating mode making it possible to exchange messages with a remote server according to a long-range low-speed communication protocol, where the messages contain information generated by the embedded software. The method is computer-implemented and comprises at least steps consisting in: receiving, via the long-range low-speed communication protocol, a message for activating a short-range high-speed communication protocol; activating the short-range high-speed communication protocol; halting the nominal operating mode; and updating the embedded software with a software update received via the short-range high-speed communication protocol.
-
公开(公告)号：US20220135094A1
公开(公告)日：2022-05-05
申请号：US17264674
申请日：2019-07-23
Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES , ALSTOM TRANSPORT TECHNOLOGIES
Inventor： Olivier MESNIL , Bastien CHAPUIS , Tom DRUET
Abstract: A method and system for inspecting a rail by guided waves, the rail being instrumented by sensors. The method comprises the steps of receiving elastic wave measurements from one or more sensors, as a train passes, releasing energy as guided waves into the rail; and of determining a function representative of the impulse response of the rail and the sensors. Developments describe how to determine the existence, position and characterisation of a defect in the rail (e.g. fracture, incipient fracture, etc.), the use of inter-correlation analyses, correlation of the coda of correlations, Passive Inverse Filter, imaging techniques. Other aspects are described for exploring rail defects: sensor position and movement, acquisition time, sampling frequency, frequency filters, amplifications, techniques for learning during successive train passes, signal injection by transducers. Software aspects are described.
-
Patent Agency Ranking
公开(公告)号：US20230333061A1
公开(公告)日：2023-10-19
申请号：US18024959
申请日：2021-09-10
Inventor： Bastien CHAPUIS , Julien ALBERTINI
IPC: G01N29/04
CPC classification number: G01N29/043 , G01N2291/102
Abstract: A method and a device for managing resources for monitoring elongate structures that can serve as elastic waveguides are provided. The structure is instrumented with a plurality of transducers capable of acquiring signals measuring characteristic quantities of elastic waves being propagated in the structure, each transducer being coupled to an electronic device installed along the structure. An electronic device comprises at least means for processing the measurement signals received from at least one transducer and a processor having code instructions for implementing steps of the resource management method consisting in: initializing an electronic device in nominal mode, the nominal mode making it possible to initiate an inspection of the elongate structure by a local analysis of elastic waves generated upon the passage of a mobile device in proximity to a transducer or initializing the device in detection mode, the detection mode making it possible to initiate, by a transducer, an emission of elastic waves in the elongate structure and make an inspection of the elongate structure by a local analysis of signals derived from the elastic waves emitted; maintaining the electronic device in nominal mode or switching the electronic device over to detection mode when an anomaly is detected in an inspection in nominal mode; maintaining the electronic device in detection mode or switching the electronic device over to assessment mode when a fault is detected in an inspection in detection mode, the assessment mode making it possible to transmit data on signals derived from elastic waves emitted in the structure to a remote server to generate a more in-depth analysis.
-
4.发明申请公开(公告)号：US20190317056A1
公开(公告)日：2019-10-17
申请号：US16469625
申请日：2017-12-15
Inventor： Tom DRUET , Bastien CHAPUIS , Emmanuel MOULIN
Abstract: A method for monitoring the structural health of a structure that supports guided propagation modes of elastic waves, includes the following steps: a) acquiring an ambient noise propagating through the structure by means of at least one pair of non-collocated elastic-wave sensors; b) estimating a function representative of an impulse response of the structure for elastic propagation between the constituent sensors of said pair; c) extracting at least one dispersion curve of the elastic propagation through the structure by time-frequency analysis of this function representative of an impulse response; and d) estimating at least one parameter indicative of a mechanical property of a constituent material of the structure from the dispersion curve obtained in step c). A system for implementing such a method is also provided.
-
公开(公告)号：US20160377528A1
公开(公告)日：2016-12-29
申请号：US15039788
申请日：2014-11-27
Inventor： Bastien CHAPUIS
CPC classification number: G01N21/1702 , G01D5/35316 , G01M5/0008 , G01M5/0016 , G01M5/0025 , G01M5/0091 , G01M11/085 , G01N29/0672 , G01N29/07 , G01N29/2418 , G01N2021/1706 , G01N2201/088 , G01N2201/1211 , G01N2291/011 , G01N2291/2694
Abstract: A method and a device for analyzing a structure by tomography and diffuse acousto-elastic field correlation are provided. An optical fiber comprising a plurality of measurement points of FBG (Fiber Bragg Grating) type, comprising sensors of Bragg grating type, is deployed in or on the structure to be analyzed. The method comprises the emission of light, into the optical fiber, and the measurement by correlation for each pair of FBG sensors. In a development, a prior imaging of the structure is performed by reconstruction of the velocities of propagation. Other developments comprise: the determination of the positions of the FBG sensors, the calibration of the tomography, the rosette configuration of the sensors forming the measurement points, the use of a plurality of optical fibers, of multiplexers, of lasers, of optical circulators, of omnidirectional optical sensors, of active noise sources, such as piezoelectric transducers, incorporated or not in the structure.
Abstract translation: 提供了一种通过断层扫描和扩散声弹性场相关分析结构的方法和装置。 包括布拉格光栅型传感器的FBG（光纤布拉格光栅）类型的多个测量点的光纤部署在要分析的结构中或其上。 该方法包括将光发射到光纤中，并且通过每对FBG传感器的相关性进行测量。 在一个发展中，通过重建传播速度来执行该结构的先前成像。 其他发展包括：确定FBG传感器的位置，层析成像的校准，形成测量点的传感器的玫瑰花结构，使用多个光纤，光学循环器的激光器的多路复用器， 的全向光学传感器，诸如压电换能器的有源噪声源，结合在一起或不结合。
-
公开(公告)号：US20230024577A1
公开(公告)日：2023-01-26
申请号：US17787927
申请日：2020-12-11
Inventor： Julien ALBERTINI , Bastien CHAPUIS
Abstract: Methods and devices for detecting a defect in a rail of a railway track, include at least two sensors selected from among magneto-acoustic and/or piezoelectric and/or magnetostrictive transducers; each sensor being associated with a timestamping circuit of a GNSS satellite positioning system; a measuring circuit for measuring, by way of the sensors, the acousto-elastic waves propagating in the rail, the wave or signal measurements being timestamped. Some developments describe notably active and passive modes; the use of train crossings; the emission of waves; the determination of the existence and then of the position and finally the characterization of the defect, where applicable; preferred placements for installing the sensors; the use of inter-correlation, passive inverse filter or correlation of coda of correlation methods; the use of mobile robots and/or drones; the use of artificial noise sources.
-
公开(公告)号：US20230003692A1
公开(公告)日：2023-01-05
申请号：US17780480
申请日：2020-12-16
Inventor： Tom DRUET , Olivier MESNIL , Bastien CHAPUIS
Abstract: Methods and devices are provided for analyzing a tubular structure including at least two electromagnetic-acoustic transducers (EMAT) and, called sensors, attachable or attached in, on or in the vicinity of the tubular structure; and computation and/or memory resources, that are accessed locally and/or remotely and that are configured to determine, for the pair of sensors, a function representing the impulse response of the tubular structure on the basis of the diffuse acousto-elastic noise present in the structure. Developments describe the use of rings supporting the sensors; translation and/or rotation movements; permanent or temporary installations; hinged rings; various computation modes, e.g., intercorrelation, a passive inverse filter, or correlation of the coda of the correlation; the use of artificial noise sources, imaging (e.g., tomography) for determining the existence of one or more defects in the structure. Software aspects are described.
-
-
-
-
-
-
Search Results
7
records
(took 0.016 seconds)
