Patents by Inventor Hidefumi TAKAMINE

Hidefumi TAKAMINE has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11639880
    Abstract: According to one embodiment, a structure evaluation system according to an embodiment includes a plurality of sensors, a position locator, and an evaluator. The plurality of sensors detect elastic waves. The position locator locates positions of elastic wave sources by using the elastic waves among the plurality of elastic waves respectively detected by the plurality of sensors having an amplitude exceeding a threshold value determined according to positions of the sources of the plurality of elastic waves and the positions of the plurality of disposed sensors. The evaluator evaluates a deteriorated state of the structure on the basis of results of the position locating of the elastic wave sources which is performed by the position locator.
    Type: Grant
    Filed: October 13, 2021
    Date of Patent: May 2, 2023
    Assignees: Kabushiki Kaisha Toshiba, Kyoto University
    Inventors: Tomoki Shiotani, Katsufumi Hashimoto, Hidefumi Takamine, Kazuo Watabe
  • Publication number: 20230083554
    Abstract: According to one embodiment, a structure evaluation system includes at least three or more sensors, a position locator, and an evaluator. The three or more sensors are arranged on surfaces different from a surface to which an impact is applied with respect to a structure at different intervals in a first direction of the structure and a second direction orthogonal to the first direction and detects elastic waves generated from the structure. The position locator locates a position of a source in which the elastic waves are generated on the basis of the elastic waves detected by each of the three or more sensors. The evaluator evaluates a deterioration state of the structure on the basis of information based on a position location process of the position locator and information indicating a position where the impact is applied.
    Type: Application
    Filed: March 3, 2022
    Publication date: March 16, 2023
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Takashi USUI, Hidefumi TAKAMINE, Yuki UEDA, Keisuke UENO, Yousuke HISAKUNI, Kazuo WATABE
  • Publication number: 20220187253
    Abstract: According to one embodiment, a structure evaluation system according to an embodiment includes a plurality of sensors, a position locator, a corrector, and an evaluator. The plurality of sensors detect elastic waves generated from a structure. The position locator locates the position of a generation sources of a plurality of elastic waves on the basis of the plurality of elastic waves detected by the plurality of sensors. The corrector corrects information based on the position locating performed by the position locator using a correction value set in correspondence with an impact. The evaluator evaluates a deterioration state of the structure on the basis of the corrected information.
    Type: Application
    Filed: March 4, 2022
    Publication date: June 16, 2022
    Applicants: Kabushiki Kaisha Toshiba, Kyoto University
    Inventors: Hidefumi TAKAMINE, Yuki UEDA, Kazuo WATABE, Tomoki SHIOTANI
  • Publication number: 20220130240
    Abstract: According to one embodiment, a vehicle information estimation system according to an embodiment includes at least one sensor and a vehicle count estimator. The at least one sensor detects elastic waves generated from a structure. The vehicle count estimator estimates the number of vehicles that have passed through on the structure using the elastic waves detected by the at least one sensor.
    Type: Application
    Filed: August 31, 2021
    Publication date: April 28, 2022
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Hidefumi TAKAMINE, Takashi USUI, Kazuo WATABE
  • Publication number: 20220082528
    Abstract: According to one embodiment, a structure evaluation system includes a wave guide, a first sensor, a second sensor, and a calculation part. The wave guide is formed in a rod shape, is inserted into a hole that is formed at a predetermined depth from a surface of a measurement target, and has one end fixed to a deepest portion of the hole. The first sensor is provided at the other end of the wave guide at a position that is substantially the same as the surface. The second sensor is provided on the surface of the measurement target. The calculation part estimates a depth of damage occurring in the measurement target from the surface on the basis of a first detection value of an elastic wave transmitted to the measurement target which is detected by the first sensor through the wave guide and a second detection value obtained by an elastic wave which is detected by the second sensor.
    Type: Application
    Filed: February 24, 2021
    Publication date: March 17, 2022
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hidefumi TAKAMINE, Yuki UEDA, Keisuke UENO, Takashi USUI, Kazuo WATABE
  • Publication number: 20220034749
    Abstract: According to one embodiment, a structure evaluation system according to an embodiment includes a plurality of sensors, a position locator, and an evaluator. The plurality of sensors detect elastic waves. The position locator locates positions of elastic wave sources by using the elastic waves among the plurality of elastic waves respectively detected by the plurality of sensors having an amplitude exceeding a threshold value determined according to positions of the sources of the plurality of elastic waves and the positions of the plurality of disposed sensors. The evaluator evaluates a deteriorated state of the structure on the basis of results of the position locating of the elastic wave sources which is performed by the position locator.
    Type: Application
    Filed: October 13, 2021
    Publication date: February 3, 2022
    Applicants: Kabushiki Kaisha Toshiba, Kyoto University
    Inventors: Tomoki SHIOTANI, Katsufumi HASHIMOTO, Hidefumi TAKAMINE, Kazuo WATABE
  • Publication number: 20210397161
    Abstract: A state evaluation system includes a sensor, a filter, a signal processor, and an evaluator. The sensor detects elastic waves which are generated from industrial equipment in operation. The filter can pass elastic waves having frequency characteristics based on abrasion which is generated in the industrial equipment. The signal processor extracts a plurality of feature values using the elastic waves passing through the filter. The evaluator evaluates an abnormality of the industrial equipment on the basis of a combination of the extracted plurality of feature values.
    Type: Application
    Filed: September 8, 2021
    Publication date: December 23, 2021
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Carrier Corporation
    Inventors: Yoshinori MORI, Hidefumi TAKAMINE, Kazuo WATABE, Hayato TODA
  • Publication number: 20210396715
    Abstract: A structure evaluation system includes a plurality of sensors and an evaluator. The plurality of sensors detect elastic waves generated in prestressed concrete in which a prestressed concrete steel material is internally provided. The evaluator evaluates a breakage of the prestressed concrete steel material based on elastic waves detected for a second period, which is a period after the elapse of a first period from a point in time when a magnitude of the elastic waves detected by the plurality of sensors is greater than or equal to a threshold value.
    Type: Application
    Filed: September 3, 2021
    Publication date: December 23, 2021
    Applicants: Kabushiki Kaisha Toshiba, Kyoto University
    Inventors: Yuki UEDA, Hidefumi TAKAMINE, Kazuo WATABE, Tomoki SHIOTANI
  • Patent number: 11181439
    Abstract: According to one embodiment, a structure evaluation system according to an embodiment includes a plurality of sensors, a position locator, and an evaluator. The plurality of sensors detect elastic waves. The position locator locates positions of elastic wave sources by using the elastic waves among the plurality of elastic waves respectively detected by the plurality of sensors having an amplitude exceeding a threshold value determined according to positions of the sources of the plurality of elastic waves and the positions of the plurality of disposed sensors. The evaluator evaluates a deteriorated state of the structure on the basis of results of the position locating of the elastic wave sources which is performed by the position locator.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: November 23, 2021
    Assignees: Kabushiki Kaisha Toshiba, Kyoto University
    Inventors: Tomoki Shiotani, Katsufumi Hashimoto, Hidefumi Takamine, Kazuo Watabe
  • Publication number: 20210181156
    Abstract: According to one embodiment, a detection system is provided that detects a state of a structure consisting of a first member that supports a traveling surface along which a vehicle travels from downward; a second member provided on an opposite side of the traveling surface with respect to the first member; and a welded portion that is provided along an end of the second member facing the first member and fixes the first member and the second member. The detection system includes: a first sensor group including first AE sensors; a second sensor group including second AE sensors; and a position orientator that performs separately a first determination that determines a generation source position of elastic waves based on the detection results of the first AE sensors and a second determination that determines the generation source position of elastic waves based on the detection results of the second AE sensors.
    Type: Application
    Filed: February 16, 2021
    Publication date: June 17, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takashi USUI, Kazuo WATABE, Takahiro OMORI, Hidefumi TAKAMINE, Akihiro KASAHARA
  • Publication number: 20210181157
    Abstract: According to one embodiment, a structure evaluation system of the embodiments includes a plurality of sensors, a position locator, and an evaluator. The plurality of sensors detect elastic waves. The position locator locates elastic wave sources on the basis of a plurality of elastic waves detected by each of the plurality of sensors. The evaluator evaluates a deterioration state of a structure in accordance with a presence or absence of a sensor and an elastic wave source distribution which shows a position of the elastic wave sources obtained on the basis of a result of locating of the elastic wave sources.
    Type: Application
    Filed: February 25, 2021
    Publication date: June 17, 2021
    Applicants: Kabushiki Kaisha Toshiba, Kyoto University
    Inventors: Hidefumi TAKAMINE, Yuki UEDA, Kazuo WATABE, Tomoki SHIOTANI, Katsufumi HASHIMOTO
  • Patent number: 10955383
    Abstract: According to one embodiment, a method for arranging a detection device for a structure is provided. The structure includes a member; a trough rib provided on an opposite side of the member; and a welded portion that is provided along an end of the trough rib facing the member and fixes the member and the trough rib. The method includes: attaching, to the trough rib, a plurality of acoustic emission sensors so as to be separated from each other in a direction in which the welded portion extends, wherein the following relationship is satisfied: ?20 degrees<?<20 degrees, where ? denotes an angle between a line connecting any given two adjacent acoustic emission sensors of the plurality of the acoustic emission sensors and a reference line extending in the direction in which the welded portion extends.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: March 23, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takashi Usui, Kazuo Watabe, Takahiro Omori, Hidefumi Takamine, Akihiro Kasahara
  • Patent number: 10883919
    Abstract: According to one embodiment, a structure evaluation system includes an impact imparting unit, a sensor, and a structure evaluation device. The impact imparting unit applies impacts to a structure. The impact imparting unit applies the impacts at a frequency equal to or less than a frequency determined in accordance with an intensity at which the impacts are imparted. The sensor detects elastic waves. The structure evaluation device evaluates a deterioration state of the structure on the basis of the detected elastic waves.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: January 5, 2021
    Assignees: Kabushiki Kaisha Toshiba, Kyoto University
    Inventors: Hidefumi Takamine, Kazuo Watabe, Tomoki Shiotani, Takahiro Nishida
  • Patent number: 10794990
    Abstract: A structure evaluation apparatus has an acquisitor and an evaluator. The acquisitor acquires a distribution that represents a distribution of strength of a reflected wave obtained by an electromagnetic radar scan to a reinforced concrete which comprises concrete and a material other than concrete. The evaluator calculates similarity, with reference to a reference region including the material in the distribution, of other regions including the material than the reference region in the distribution.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: October 6, 2020
    Assignees: Kabushiki Kaisha Toshiba, Kyoto University
    Inventors: Hidefumi Takamine, Kazuo Watabe, Tomoki Shiotani
  • Patent number: 10712318
    Abstract: According to one embodiment, a sensor adhesion state determination system includes a plurality of sensors, a calculator, and a determiner. Each of the plurality of sensors detects elastic waves. The calculator calculates peak frequencies of the elastic waves on the basis of the elastic waves detected by the plurality of sensors. The determiner determines the adhesion state of each of the sensors by comparing the peak frequencies with information serving as a determination reference.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: July 14, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hidefumi Takamine, Kazuo Watabe
  • Patent number: 10648949
    Abstract: According to an embodiment, a structure evaluation system includes a plurality of sensors, a position locator, a velocity calculator, and an evaluator. The sensors detect an elastic wave generated from a structure. The position locator derives a wave source distribution of the elastic waves generated from the structure, on the basis of the elastic waves. The velocity calculator derives a propagation velocity of the elastic wave generated from the structure, on the basis of the elastic waves. The evaluator evaluates the soundness of the structure on the basis of the wave source distribution and the propagation velocity of the elastic waves.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: May 12, 2020
    Assignees: Kabushiki Kaisha Toshiba, Kyoto University
    Inventors: Kazuo Watabe, Hidefumi Takamine, Tomoki Shiotani
  • Patent number: 10613060
    Abstract: According to an embodiment, a structure evaluation system includes a plurality of AE sensors, a signal processor, a position locator, and an evaluator. The AE sensors detect an elastic wave generated from a structure. The signal processor performs signal processing on the elastic wave detected by the AE sensors and outputs an AE signal including information on the elastic wave. The position locator derives a source distribution indicating the distribution of sources of the elastic wave generated in the structure, using an AE signal caused by an impact on the structure. The evaluator evaluates a state of deterioration of a predetermined region of the structure from a density of the sources of the elastic wave obtained on the basis of the source distribution.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: April 7, 2020
    Assignees: Kabushiki Kaisha Toshiba, Kyoto University
    Inventors: Hidefumi Takamine, Kazuo Watabe, Tomoki Shiotani
  • Publication number: 20190383696
    Abstract: According to one embodiment, a structure evaluation system according to an embodiment includes a plurality of sensors, a position locator, and an evaluator. The plurality of sensors detect elastic waves. The position locator locates positions of elastic wave sources by using the elastic waves among the plurality of elastic waves respectively detected by the plurality of sensors having an amplitude exceeding a threshold value determined according to positions of the sources of the plurality of elastic waves and the positions of the plurality of disposed sensors. The evaluator evaluates a deteriorated state of the structure on the basis of results of the position locating of the elastic wave sources which is performed by the position locator.
    Type: Application
    Filed: August 27, 2019
    Publication date: December 19, 2019
    Applicants: Kabushiki Kaisha Toshiba, Kyoto University
    Inventors: Tomoki Shiotani, Katsufumi Hashimoto, Hidefumi Takamine, Kazuo Watabe
  • Publication number: 20190317051
    Abstract: According to an embodiment, a structure evaluation system includes a plurality of sensors, a position locator, a velocity calculator, and an evaluator. The sensors detect an elastic wave generated from a structure. The position locator derives a wave source distribution of the elastic waves generated from the structure, on the basis of the elastic waves. The velocity calculator derives a propagation velocity of the elastic wave generated from the structure, on the basis of the elastic waves. The evaluator evaluates the soundness of the structure on the basis of the wave source distribution and the propagation velocity of the elastic waves.
    Type: Application
    Filed: June 27, 2019
    Publication date: October 17, 2019
    Applicants: Kabushiki Kaisha Toshiba, Kyoto University
    Inventors: Kazuo WATABE, Hidefumi TAKAMINE, Tomoki SHIOTANI
  • Patent number: 10371666
    Abstract: According to an embodiment, a structure evaluation system includes a plurality of sensors, a position locator, a velocity calculator, and an evaluator. The sensors detect an elastic wave generated from a structure. The position locator derives a wave source distribution of the elastic waves generated from the structure, on the basis of the elastic waves. The velocity calculator derives a propagation velocity of the elastic wave generated from the structure, on the basis of the elastic waves. The evaluator evaluates the soundness of the structure on the basis of the wave source distribution and the propagation velocity of the elastic waves.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: August 6, 2019
    Assignees: KABUSHIKI KAISHA TOSHIBA, Kyoto University
    Inventors: Kazuo Watabe, Hidefumi Takamine, Tomoki Shiotani