Patents by Inventor Kenichi Fujiwara

Kenichi Fujiwara 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: 11133900
    Abstract: An object of the present invention is to prevent wrong registration due to an operation error and an input error in installation work of a sensor device. A terminal acquires a first identifier which the sensor device has and further, acquires positional information using a positioning device. The terminal transmits the first identifier and the positional information respectively acquired to a management server. The sensor device transmits a second identifier held by itself to the management server. The management server correlates the second identifier and the positional information when the management server judges that the first identifier and the second identifier are located in predetermined relation, registers them in a storage, and the management server notifies the sensor device of a result of the judgment.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: September 28, 2021
    Assignee: Hitachi, Ltd.
    Inventors: Rintaro Katayama, Kenichi Mizugaki, Ryosuke Fujiwara
  • Patent number: 11099240
    Abstract: According to one embodiment, a device for evaluating an energy storage device includes first processing circuitry and second processing circuitry. The first processing circuitry detects a plurality of times at which an amount of charge of the energy storage device satisfies a threshold condition, based on measurement data on the energy storage device in operation, selects a plurality of time intervals, calculates a charge-discharge efficiency in each of the time intervals based on charge-discharge command values belonging to the time interval, and divides a set of the charge-discharge efficiencies into a plurality of clusters and generates characteristic information on the clusters based on at least one of the measurement data and the charge-discharge command values. The second processing circuitry generates output data for displaying: transition data indicating transition of the charge-discharge efficiency belonging to the cluster; and characteristic information on the cluster.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: August 24, 2021
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Energy Systems & Solutions Corporation
    Inventors: Hisaaki Hatano, Takahiro Yamamoto, Kenichi Fujiwara, Masatake Sakuma, Takenori Kobayashi, Yasuhiro Ogura, Kenji Mitsumoto
  • Publication number: 20210190363
    Abstract: According to one embodiment, a control device for an air conditioner which is communicably connected to first and second terminal devices to be used by first and second users is provided. The control device includes a processor. The processor configured to receive a first personal set temperature which is a temperature set by the first user by operating the first terminal device, receive a second personal set temperature which is a temperature set by the second user by operating the second terminal device, and determine a set value of the air conditioner based on the first personal set temperature and the second personal set temperature.
    Type: Application
    Filed: March 5, 2021
    Publication date: June 24, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoshi OTSUKI, Kenichi FUJIWARA, Miho SAKO
  • Publication number: 20210178927
    Abstract: There is provided a rechargeable battery evaluation device including: a charging controller configured to switch charging current of a rechargeable battery being charged with first current to second current; and a first state estimator configured to estimate a state of the rechargeable battery based on a feature of change in at least one of a voltage and a charging amount of the rechargeable battery due to switching from the charging current to the second current.
    Type: Application
    Filed: February 26, 2021
    Publication date: June 17, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takahiro YAMAMOTO, Kaoru KOIWA, Hisaaki HATANO, Kenichi FUJIWARA, Kohei MARUCHI, Koji TAKAZAWA, Yoshiyuki ISOZAKI, Shun EGUSA, Tomokazu MORITA
  • Publication number: 20200233037
    Abstract: According to one embodiment, an evaluation device for an energy storage device includes first processing circuitry and second processing circuitry. The first processing circuitry acquires data items including an amount of charge and a voltage value measured in a measurement period from the energy storage device, the energy storage device being charge-discharge-controlled according to charge-discharge command values. The second processing circuitry generates a representative data item of voltage values for amounts of charge, based on the data items acquired for the measurement period; and evaluates a degradation state of the energy storage device, based on a relative change between a plurality of the representative data items corresponding to a plurality of the measurement periods.
    Type: Application
    Filed: September 11, 2019
    Publication date: July 23, 2020
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Takahiro YAMAMOTO, Hisaaki Tatano, Kenichi Fujiwara, Masatake Sakuma, Kaoru Koiwa, Yasuhiro Ogura, Takenori Kobayashi, Kenji Mitsumoto
  • Publication number: 20200217896
    Abstract: According to one embodiment, a device for evaluating an energy storage device includes first processing circuitry and second processing circuitry. The first processing circuitry detects a plurality of times at which an amount of charge of the energy storage device satisfies a threshold condition, based on measurement data on the energy storage device in operation, selects a plurality of time intervals, calculates a charge-discharge efficiency in each of the time intervals based on charge-discharge command values belonging to the time interval, and divides a set of the charge-discharge efficiencies into a plurality of clusters and generates characteristic information on the clusters based on at least one of the measurement data and the charge-discharge command values. The second processing circuitry generates output data for displaying: transition data indicating transition of the charge-discharge efficiency belonging to the cluster; and characteristic information on the cluster.
    Type: Application
    Filed: September 11, 2019
    Publication date: July 9, 2020
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Energy Systems & Solutions Corporation
    Inventors: Hisaaki Hatano, Takahiro Yamamoto, Kenichi Fujiwara, Masatake Sakuma, Takenori Kobayashi, Yasuhiro Ogura, Kenji Mitsumoto
  • Publication number: 20200208863
    Abstract: According to one embodiment, an air-conditioning control device includes model storage and a processor. The model storage is configured to store a discomfort probability model which estimates a value of discomfort of an occupant by a pair of time elapsed after an energy-saving operation of an air conditioner is turned on and before the energy-saving operation is turned off by the occupant, and an air-conditioning state at the time when the energy-saving operation is turned off. The processor is configured to acquire a current air-conditioning state during the energy-saving operation of the air conditioner, and turn off the energy-saving operation, based on occupant's discomfort estimated from the discomfort probability model.
    Type: Application
    Filed: March 12, 2020
    Publication date: July 2, 2020
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Carrier Corporation
    Inventors: Kenichi FUJIWARA, Satoko SUGISAKI
  • Patent number: 10641512
    Abstract: An air-conditioning operation condition generation apparatus as an aspect of the present invention generates trial conditions for multiple air conditioners associated with a target space of air-conditioning control, evaluates a trial performed by coordination of the plurality of air conditioners under the trial conditions, and generates actual operation conditions for the plurality of air conditioners to achieve a targeted state in the target space on the basis of evaluation of the trial.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: May 5, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tomoshi Otsuki, Kenichi Fujiwara, Mamiko Abe, Takahiro Yamamoto
  • Patent number: 10627265
    Abstract: In one embodiment, a sensor assignment apparatus includes a measured value storage, a generator, a calculator, and a selector. The measured value storage stores measured values of a plurality of sensors. The generator generates combinations of sensors and arguments of a function to diagnose sensors by assigning sensors to its arguments. The calculator calculates evaluation values which are based on the function values. The function values are obtained by applying diagnostic functions to measured values for all combinations generated by the generator. The selector selects at least one combination from the resulting set of the generator by considering the evaluation values of combinations calculated by the calculator.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: April 21, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kenichi Fujiwara, Hideyuki Aisu, Hisaaki Hatano
  • Publication number: 20200072487
    Abstract: According to one embodiment, a terminal device used by a user in an indoor space in which an air conditioner is installed includes a processor. The processor is configured to input position information indicating a position of the user in the indoor space, input first bodily sensation information indicating an air conditioning state felt by the user, and output the input position information and the input first bodily sensation information to an external device.
    Type: Application
    Filed: March 13, 2019
    Publication date: March 5, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kenichi FUJIWARA, Tomoshi Otsuki, Miho Sako, Takahiro Yamamoto, Eiichi Sunagawa, Shusaku Tsuge
  • Patent number: 10573941
    Abstract: In one embodiment, a temperature management device is provided with a plurality of battery cells, power sensor(s) each of which detects the charge/discharge power of battery cell(s) at a prescribed time interval, a power representative value calculation section which calculates a power representative value of a time lapse data of the charge/discharge power(s) detected by the power sensor, temperature sensor(s) each of which detects the temperature of battery cell(s) at a prescribed time interval, a temperature representative value calculation section which calculates a temperature representative value of a time lapse data of temperature(s) detected by the temperature sensor, a radiation characteristic identification section which identifies a radiation characteristic from the temperature representative value and the power representative value, and an air conditioning setting calculation section which calculates an air conditioning setting for the battery cell(s) corresponding to the power representative value
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: February 25, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kenichi Fujiwara, Takahiro Yamamoto, Ryosuke Takeuchi, Masatake Sakuma, Tomohiro Toyosaki, Takenori Kobayashi
  • Patent number: 10527329
    Abstract: In an ejector-type refrigeration cycle device provided with a first compression mechanism and a second compression mechanism, a refrigerant outlet of a suction side evaporator is coupled to a refrigerant suction port of the ejector, and a second compression mechanism is provided between the suction side evaporator and the refrigerant suction port of the ejector. Thus, even in an operation condition in which suction capacity of the ejector is decreased in accordance with a decrease of the flow amount of a drive flow of the ejector, the suction capacity of the ejector can be supplemented by the operation of the second compression mechanism. Accordingly, even when a variation in the flow amount of the drive flow is caused, the ejector-type refrigeration cycle device can be stably operated.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: January 7, 2020
    Assignee: DENSO CORPORATION
    Inventors: Hiroshi Oshitani, Kenichi Fujiwara, Haruyuki Nishijima, Etsuhisa Yamada, Tooru Ikemoto, Youhei Nagano
  • Publication number: 20200003839
    Abstract: According to one embodiment, an evaluation device includes first processing circuitry and second processing circuitry. The first processing circuitry calculates a feature value of an energy storage device based on voltage values measured from the energy storage device being subjected to charge-discharge-control according to charge-discharge command values. The second processing circuitry derives an evaluation function of a degradation state of the energy storage device according to a difference between a distribution of the charge-discharge command values and a reference distribution. The second processing circuitry evaluates the degradation state of the energy storage device, based on the evaluation function and the calculated feature value.
    Type: Application
    Filed: September 11, 2019
    Publication date: January 2, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takahiro YAMAMOTO, Hisaaki HATANO, Masatake SAKUMA, Kenichi FUJIWARA, Takenori KOBAYASHI, Tomohiro TOYOSAKI, Yoshiyuki SAKAMOTO
  • Publication number: 20190017720
    Abstract: An air-conditioning operation condition generation apparatus as an aspect of the present invention generates trial conditions for multiple air conditioners associated with a target space of air-conditioning control, evaluates a trial performed by coordination of the plurality of air conditioners under the trial conditions, and generates actual operation conditions for the plurality of air conditioners to achieve a targeted state in the target space on the basis of evaluation of the trial.
    Type: Application
    Filed: March 5, 2018
    Publication date: January 17, 2019
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Tomoshi OTSUKI, Kenichi Fujiwara, Mamiko Abe, Takahiro Yamamoto
  • Publication number: 20180269546
    Abstract: In one embodiment, a temperature management device is provided with a plurality of battery cells, power sensor(s) each of which detects the charge/discharge power of battery cell(s) at a prescribed time interval, a power representative value calculation section which calculates a power representative value of a time lapse data of the charge/discharge power(s) detected by the power sensor, temperature sensor(s) each of which detects the temperature of battery cell(s) at a prescribed time interval, a temperature representative value calculation section which calculates a temperature representative value of a time lapse data of temperature(s) detected by the temperature sensor, a radiation characteristic identification section which identifies a radiation characteristic from the temperature representative value and the power representative value, and an air conditioning setting calculation section which calculates an air conditioning setting for the battery cell(s) corresponding to the power representative value
    Type: Application
    Filed: August 30, 2017
    Publication date: September 20, 2018
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Kenichi Fujiwara, Takahiro Yamamoto, Ryosuke Takeuchi, Masatake Sakuma, Tomohiro Toyosaki, Takenori Kobayashi
  • Publication number: 20170140287
    Abstract: A bias estimation apparatus according to an embodiment estimates a bias included in a measured values by each sensor. The bias estimation apparatus includes a reference model builder, a temporary bias generator, a corrected measured value calculator, a similarity calculator, a similarity selector, a score calculator, and an estimated bias determiner. The reference model builder builds a reference model of the measured value packs. The temporary bias generator generates a temporary bias pack. The corrected measured value calculator calculates corrected measured value packs. The similarity calculator calculates a similarity of each corrected measured value pack. The similarity selector selects a part of the similarities according to their values from among the similarities. The score calculator calculates a score based on the selected similarities. The estimated bias determiner determines an estimated bias which is an estimated value of the bias based on the score.
    Type: Application
    Filed: January 31, 2017
    Publication date: May 18, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takuro MORIYAMA, Hideyuki AISU, Hisaaki HATANO, Kenichi FUJIWARA
  • Patent number: 9541316
    Abstract: An accumulator is disposed in a refrigerant circuit at a position on the suction side of a compressor, separates the gas and liquid phases of the refrigerant, and contains the liquid refrigerant. The accumulator comprises: a pressure container (2) having an inner space (S) formed therein; a refrigerant inlet opening (5) provided in the pressure container; a refrigerant outlet opening (6); a conduction pipe (8) for conducting a refrigerant within the pressure container to the outlet opening; and a gas-liquid separation means (15) provided with a separation plate (16) provided within the pressure container so as to face the inlet opening and so as to expand substantially perpendicularly to the direction of the line of flow at the inlet opening. The gas-liquid separation means has, in the region of the separation plate which faces the inlet opening, a mountain-shaped protrusion (18) having a crest (18a) and a sloped surface (18b), the crest (18a) protruding toward the inlet opening.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: January 10, 2017
    Assignee: DENSO CORPORATION
    Inventors: Yukihiko Takeda, Kenichi Fujiwara, Teruyuki Hotta
  • Publication number: 20150269293
    Abstract: In one embodiment, a diagnosis model generating apparatus includes a physical parameter calculator, a first residual calculator, a physical model determiner, a second residual calculator, a searcher, and a generator. The physical parameter calculator calculates a parameter value of a parameter having an undetermined value of a first physical model. The first physical model represents a relationship between the variables. The first residual calculator calculates a first residual of the first physical model. The physical model determiner determines whether to adopt the first physical model. The second residual calculator calculates a second residual of the first physical model that has not been adopted by the physical model determiner. The searcher searches for a measured value correlated with the second residual from among measured values not assigned to the variables. The generator generates a second physical model. The second physical model represents a relationship between the variables.
    Type: Application
    Filed: March 16, 2015
    Publication date: September 24, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hisaaki HATANO, Hideyuki AISU, Kenichi FUJIWARA
  • Publication number: 20150268072
    Abstract: In one embodiment, a sensor assignment apparatus includes a measured value storage, a generator, a calculator, and a selector. The measured value storage stores measured values of a plurality of sensors. The generator generates combinations of sensors and arguments of a function to diagnose sensors by assigning sensors to its arguments. The calculator calculates evaluation values which are based on the function values. The function values are obtained by applying diagnostic functions to measured values for all combinations generated by the generator. The selector selects at least one combination from the resulting set of the generator by considering the evaluation values of combinations calculated by the calculator.
    Type: Application
    Filed: March 17, 2015
    Publication date: September 24, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kenichi FUJIWARA, Hideyuki AISU, Hisaaki Hatano
  • Publication number: 20140331713
    Abstract: An accumulator is disposed in a refrigerant circuit at a position on the suction side of a compressor, separates the gas and liquid phases of the refrigerant, and contains the liquid refrigerant. The accumulator comprises: a pressure container (2) having an inner space (S) formed therein; a refrigerant inlet opening (5) provided in the pressure container; a refrigerant outlet opening (6); a conduction pipe (8) for conducting a refrigerant within the pressure container to the outlet opening; and a gas-liquid separation means (15) provided with a separation plate (16) provided within the pressure container so as to face the inlet opening and so as to expand substantially perpendicularly to the direction of the line of flow at the inlet opening. The gas-liquid separation means has, in the region of the separation plate which faces the inlet opening, a mountain-shaped protrusion (18) having a crest (18a) and a sloped surface (18b), the crest (18a) protruding toward the inlet opening.
    Type: Application
    Filed: September 5, 2012
    Publication date: November 13, 2014
    Applicant: DENSO CORPORATION
    Inventors: Yukihiko Takeda, Kenichi Fujiwara, Teruyuki Hotta