Patents by Inventor Tomoki SHIOTANI

Tomoki SHIOTANI 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).

  • Publication number: 20230280235
    Abstract: According to one embodiment, a structure evaluation system includes a plurality of sensors, an acquirer, a calculator, and an evaluator. The plurality of sensors detects elastic waves generated from the structure. The acquirer acquires detection information for an evaluation target period in which information on at least an amplitude of each elastic wave detected by each of the plurality of sensors is associated with time information on the time when each elastic wave is detected. The calculator calculates an evaluation value, which is a slope of an amplitude scale-based frequency distribution of elastic waves, every predetermined period based on the acquired detection information for the evaluation target period. The evaluator evaluates a deterioration state of the structure based on the time-series data of each evaluation value calculated every predetermined period.
    Type: Application
    Filed: September 6, 2022
    Publication date: September 7, 2023
    Applicants: Kabushiki Kaisha Toshiba, Kyoto University
    Inventors: Takashi USUI, Kazuo WATABE, Tomoki SHIOTANI
  • 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: 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: 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: 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: 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: 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: 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
  • Patent number: 10345275
    Abstract: According to an embodiment, a structure evaluation system includes a plurality of sensors, a position locator, and an evaluator. The sensors detect an elastic wave generated from a structure. The position locator derives a source distribution of the elastic waves generated from the structure, caused by an impact on the structure. The evaluator evaluates a state of deterioration of the structure from characteristic parameters of the elastic waves in the source distribution.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: July 9, 2019
    Assignees: KABUSHIKI KAISHA TOSHIBA, KYOTO UNIVERSITY
    Inventors: Hidefumi Takamine, Kazuo Watabe, Tomoki Shiotani
  • Patent number: 10330646
    Abstract: According to an embodiment, a structure evaluation system includes a plurality of AE sensors, a signal processor, a position locator, a velocity calculator, and an evaluator. The AE sensors detect an elastic wave generated from a structure. The signal processor extracts an AE signal including information on the elastic wave by performing signal processing on the elastic wave detected by the AE sensor. The position locator derives a wave source distribution indicating a distribution of sources of the elastic waves generated in the structure on the basis of the AE signals. The velocity calculator derives a propagation velocity of the elastic wave generated in the structure on the basis of the AE signal. The evaluator evaluates the soundness of the structure on the basis of the wave source distributions and the propagation velocity of the elastic waves.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: June 25, 2019
    Assignees: Kabushiki Kaisha Toshiba, Kyoto University
    Inventors: Kazuo Watabe, Hidefumi Takamine, Tomoki Shiotani
  • Publication number: 20180372580
    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: Application
    Filed: March 12, 2018
    Publication date: December 27, 2018
    Applicants: Kabushiki Kaisha Toshiba, Kyoto University
    Inventors: Hidefumi TAKAMINE, Kazuo Watabe, Tomoki Shiotani, Takahiro Nishida
  • Publication number: 20170363586
    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: Application
    Filed: March 9, 2017
    Publication date: December 21, 2017
    Applicants: Kabushiki Kaisha Toshiba, Kyoto University
    Inventors: Hidefumi TAKAMINE, Kazuo WATABE, Tomoki SHIOTANI
  • Publication number: 20170363587
    Abstract: According to an embodiment, a structure evaluation system includes a plurality of sensors, a position locator, and an evaluator. The sensors detect an elastic wave generated from a structure. The position locator derives a source distribution of the elastic waves generated from the structure, caused by an impact on the structure. The evaluator evaluates a state of deterioration of the structure from characteristic parameters of the elastic waves in the source distribution.
    Type: Application
    Filed: March 10, 2017
    Publication date: December 21, 2017
    Applicants: KABUSHIKI KAISHA TOSHIBA, Kyoto University
    Inventors: Hidefumi TAKAMINE, Kazuo WATANABE, Tomoki SHIOTANI
  • Publication number: 20170336364
    Abstract: According to an embodiment, a structure evaluation system includes a plurality of AE sensors, a signal processor, a position locator, a velocity calculator, and an evaluator. The AE sensors detect an elastic wave generated from a structure. The signal processor extracts an AE signal including information on the elastic wave by performing signal processing on the elastic wave detected by the AE sensor. The position locator derives a wave source distribution indicating a distribution of sources of the elastic waves generated in the structure on the basis of the AE signals. The velocity calculator derives a propagation velocity of the elastic wave generated in the structure on the basis of the AE signal. The evaluator evaluates the soundness of the structure on the basis of the wave source distributions and the propagation velocity of the elastic waves.
    Type: Application
    Filed: March 9, 2017
    Publication date: November 23, 2017
    Applicants: Kabushiki Kaisha Toshiba, Kyoto University
    Inventors: Kazuo WATABE, Hidefumi TAKAMINE, Tomoki SHIOTANI