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).

  • 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
  • Patent number: 10365250
    Abstract: According to an embodiment, a detection device is used for a structure. The structure includes: a first member; a second member provided on an opposite side of 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 device include: a plurality of acoustic emission sensors that are disposed so as to be spaced apart from each other in a direction in which the welded portion extends and are configured to detect an elastic wave transmitted to the second member, each acoustic emission sensor being attached to the second member; and an outputter that outputs information, obtained from outputs of the plurality of the acoustic emission sensors.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: July 30, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takashi Usui, Kazuo Watabe, Takahiro Omori, Hidefumi Takamine, Akihiro Kasahara
  • 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
  • Patent number: 10234430
    Abstract: According to an embodiment, a detection system includes a detection device, an acoustic emission sensor, and a processing unit. The detection device detects a change that occurs in a structure or a change in an environment related to the structure. The acoustic emission sensor detects an acoustic emission wave produced from the structure. The processing unit performs first signal processing to process an acoustic emission signal indicating the acoustic emission wave, which is input from the acoustic emission sensor until a first period of time elapses after a detection signal is input from the detection device. The detection signal indicates that a change has occurred in the structure or the environment related to the structure.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: March 19, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Hidefumi Takamine
  • 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: 20180266998
    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: Application
    Filed: March 9, 2018
    Publication date: September 20, 2018
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Hidefumi TAKAMINE, Kazuo WATABE
  • Patent number: 9921188
    Abstract: According to an embodiment, a detection system includes a plurality of sensor nodes and a sensor module. The plurality of sensor nodes detects sound waves generated from a prestressed concrete and converts the detected sound waves into detection signals. The sensor module is connected to the plurality of sensor nodes and receives the detection signals. The plurality of sensor nodes includes the sensor nodes in an operating state and the sensor nodes in a dormant state in which power consumption is held down as compared to the operating state. When magnitude of the detection signals is equal to or greater than a first threshold value, the sensor module switches the sensor node in the dormant state to the operating state.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: March 20, 2018
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hidefumi Takamine, Kazuo Watabe, Takahiro Omori, Takashi Usui, Junko Hirokawa, Akihiro Kasahara
  • 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