Patents by Inventor Kazuo Watabe

Kazuo Watabe 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: 11073498
    Abstract: According to one embodiment, a detection system of an embodiment includes a sensor configured to detect elastic waves and a determiner. The determiner determines a region where an elastic wave generation source is positioned on the basis of waveform information if the waveform information including a plurality of peak groups related to one elastic wave is included in a detection result of the sensor.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: July 27, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoya Fumikura, Takahiro Omori, Kazuo Watabe
  • Patent number: 11041830
    Abstract: According to one embodiment, a detection system of an embodiment includes a sensor configured to detect elastic waves and a determiner. The determiner determines a region where an elastic wave generation source is positioned on the basis of waveform information if the waveform information including a plurality of peak groups related to one elastic wave is included in a detection result of the sensor.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: June 22, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoya Fumikura, Takahiro Omori, 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: 20210181011
    Abstract: According to an embodiment, a nondestructive inspection method includes: detecting, by a plurality of sensors installed in a truck that supports a vehicle body, an elastic wave generated when a lifting member inserted between the vehicle body and the truck moves the vehicle body up and down; and estimating, by an evaluation device, a position of a defect in the truck, based on the elastic wave detected by the plurality of sensors.
    Type: Application
    Filed: August 28, 2020
    Publication date: June 17, 2021
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Kazuo WATABE, Toshiki TAKAYASU, Takashi USUI, Yoshiyuki SAKAMOTO, Isao TAKAHASHI
  • 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: 11002711
    Abstract: According to one embodiment, a detection system includes a base member, a plurality of sensors, and one or more processors. The plurality of sensors are provided on the base member, and detect an elastic wave from a test object of a plurality of test objects. The elastic wave propagates through a connecting member among a plurality of connecting members that connect the test objects with the base member. The connecting members each have a thickness smaller than a wavelength of the elastic wave. The one or more processors detect an abnormality of the test objects based on the detected elastic wave.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: May 11, 2021
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Takashi Usui, Yasuo Yoshii, Kazuo Watabe
  • 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
  • Publication number: 20200408722
    Abstract: According to one embodiment, a sensor includes a first structure body, a second structure body, and a detector. The first structure body includes a supporter, a deformable part supported by a first portion of the supporter, and a membrane part. At least a portion of the membrane part is connected to the deformable part and a second portion of the supporter. The second structure body is connected to the first structure body. A liquid is provided between the first structure body and the second structure body. The detector outputs a signal corresponding to a deformation of the deformable part.
    Type: Application
    Filed: September 11, 2020
    Publication date: December 31, 2020
    Applicants: The University of Tokyo, KABUSHIKI KAISHA TOSHIBA
    Inventors: Isao SHIMOYAMA, Thanh-Vinh NGUYEN, Minh Dung NGUYEN, Takahiro OMORI, Kazuo WATABE
  • Publication number: 20200408721
    Abstract: According to one embodiment, a sensor includes first and second structure bodies, and a detector. The first structure body includes a supporter, and first and second deformable parts supported by the supporter. The second deformable part has at least one of a second length less than a first length of the first deformable part, a second width greater than a first width of the first deformable part, a second thickness greater than a first thickness of the first deformable part, a second Young's modulus greater than a first Young's modulus of the first deformable part, or a second spring constant greater than a first spring constant of the first deformable part. The second structure body is connected to the first structure body. A liquid is provided between the first and second structure bodies. The detector outputs a signal corresponding to a deformation of the first or second deformable part.
    Type: Application
    Filed: September 11, 2020
    Publication date: December 31, 2020
    Applicants: The University of Tokyo, KABUSHIKI KAISHA TOSHIBA
    Inventors: Isao SHIMOYAMA, Minh Dung NGUYEN, Thanh-Vinh NGUYEN, Takanori USAMI, Kazuo WATABE, Takahiro OMORI, Kiyoshi MATSUMOTO
  • 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: 10793378
    Abstract: According to an embodiment, a transfer apparatus includes a gripper, a first driving mechanism, an elastic passive joint part, a conveyor, a second driving mechanism, and base. The gripper grips an article. The first driving mechanism linearly moves the gripper in at least two directions including a first direction and a second direction intersecting with the first direction. The elastic passive joint part is interposed between the gripper and the first driving mechanism, and operates in accordance with an operation of the gripper. The conveyor conveys the article. The second driving mechanism linearly moves the conveyor in the at least two directions, and is connected to the conveyor. The base supports the first driving mechanism and the second driving mechanism.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: October 6, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Junya Tanaka, Kazuo Watabe, Akihito Ogawa, Hideichi Nakamoto, Takafumi Sonoura, Haruna Eto
  • Publication number: 20200295250
    Abstract: According to one embodiment, a sensor module includes at least one sensor and at least one switch. The sensor includes a first piezoelectric element. The first piezoelectric element includes a first electrode. The first piezoelectric element is set with a resonance frequency to resonate at a vibration frequency of a detection target. The switch includes a second piezoelectric element. The second piezoelectric element includes a second electrode connected to the first electrode and a third electrode electrically separated from the second electrode.
    Type: Application
    Filed: August 30, 2019
    Publication date: September 17, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yongfang LI, Takahiro Omori, Takashi Usui, Osamu Nishimura, Kazuo Watabe
  • Publication number: 20200292505
    Abstract: According to one embodiment, a sensor module includes a sensor and a diagnosis circuit. The sensor includes piezoelectric transducers and switches. The piezoelectric transducers have different resonance frequencies. The switches are provided to correspond to the piezoelectric transducers, respectively. Each of the switches outputs an output signal corresponding to a voltage generated by an inverse piezoelectric effect of a corresponding piezoelectric transducer of the piezoelectric transducers. The diagnosis circuit diagnoses, based on a difference in pattern of the output signal, whether vibration has newly occurred in the sensor, and switch an output destination of the output signal of the sensor according to a result of the diagnosis.
    Type: Application
    Filed: August 30, 2019
    Publication date: September 17, 2020
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yongfang Li, Takahiro Omori, Takashi Usui, Osamu Nishimura, Kazuo Watabe
  • 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
  • Publication number: 20200217822
    Abstract: According to one embodiment, a detection system includes a plurality of sensors, a locator, a first counter, and a determiner. The plurality of sensors that detect an elastic wave, the sensors being disposed separately from each other in a direction in which the welded portion extends and each being installed on the first member or the second member. The locator that locates a generation source position of the elastic wave on the basis of outputs of the plurality of sensors. The first counter that accumulates information of generation source positions of a plurality of elastic waves located by the locator to calculate a distribution of generation source positions of the plurality of elastic waves over a predetermined time. The determiner that determines the position of the crack on the basis of the distribution calculated by the first counter.
    Type: Application
    Filed: January 8, 2020
    Publication date: July 9, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Keiichiro SOMEDA, Takashi USUI, Kazuo WATABE, Shuichi HIRANO
  • 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: 20200080970
    Abstract: According to one embodiment, a detection system includes a base member, a plurality of sensors, and one or more processors. The plurality of sensors are provided on the base member, and detect an elastic wave from a test object of a plurality of test objects. The elastic wave propagates through a connecting member among a plurality of connecting members that connect the test objects with the base member. The connecting members each have a thickness smaller than a wavelength of the elastic wave. The one or more processors detect an abnormality of the test objects based on the detected elastic wave.
    Type: Application
    Filed: February 25, 2019
    Publication date: March 12, 2020
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Takashi USUI, Yasuo Yoshii, Kazuo Watabe
  • Patent number: 10578587
    Abstract: According to one embodiment, a method is used for diagnosing a deterioration of a utility pole having at least one bolt and a plurality of holes provided for attaching the bolt. In the method, an impact is applied to the bolt. Elastic waves generated due to the impact are detected by a sensor shaped like a bolt. The sensor is attached to at least one of the holes. A propagation situation of the elastic waves in the utility pole is derived, based on the elastic waves detected, and each position of the bolt and the sensor.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: March 3, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Keiichiro Someda, Kazuo Watabe, Osamu Nishimura, Michihiko Inukai