Patents by Inventor Hiroyuki AKUZAWA

Hiroyuki AKUZAWA 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: 12061667
    Abstract: A data processing method is a data processing method in which variable measurement data transmitted from a sensor at a first cycle is computationally processed at a second cycle that is longer than the first cycle. The measurement data is acquired in a third cycle that is longer than the first cycle and shorter than the second cycle, an average value of the acquired measurement data is calculated at the second cycle, and computation processing thereof is performed.
    Type: Grant
    Filed: January 20, 2022
    Date of Patent: August 13, 2024
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Takafumi Yamada, Hiroyuki Akuzawa, Noboru Kitahara, Taichi Watanabe
  • Publication number: 20240190398
    Abstract: A brake pedal device includes: a housing fixed to a vehicle; a brake pedal provided to be swingable about a predetermined axis with respect to the housing and to receive a depression operation of a driver; and at least three sensors that output signals according to an operation amount of the brake pedal. The at least three sensors include at least one magnetic sensor and at least two inductive sensors, for example. The at least two inductive sensors are spaced apart from each other such that a movement of a target metal of one inductive sensor is detected by a sensing coil of the one inductive sensor but a movement of a target metal of any other inductive sensors is not detected by the sensing coil of the one inductive sensor.
    Type: Application
    Filed: February 26, 2024
    Publication date: June 13, 2024
    Inventors: Hiroyuki AKUZAWA, Toshiaki YANAGI, Takamitsu KUBOTA, Yoshinori INUZUKA
  • Patent number: 11585286
    Abstract: A data processing method of variable measurement data in an electronic control unit (ECU) is provided. The ECU that processes the data processing method calculates a filtering frequency based on a delay time frequency based on a transmission timing cycle of the measurement data and a processing timing cycle of the measurement data in the ECU, and also based on a pulsation frequency of the measurement data, and removes, from the measurement data, a component of the filtering frequency calculated in the calculation of the filtering frequency.
    Type: Grant
    Filed: March 21, 2022
    Date of Patent: February 21, 2023
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Takafumi Yamada, Hiroyuki Akuzawa, Noboru Kitahara, Takashi Ooga, Taichi Watanabe
  • Publication number: 20230009483
    Abstract: A measurement control device includes a sensing unit and a low-pass filter unit. The sensing unit outputs an air flow rate value corresponding to an air flow rate flowing through a flow path. The low-pass filter unit removes high-frequency components included in the air flow rate value input from the sensing unit. The measurement control device calculates a pulsation state that is a state of a pulsation occurring in the air flow rate based on the air flow rate value that has passed through the low-pass filter unit. The measurement control device corrects the air flow rate value using the pulsation state.
    Type: Application
    Filed: September 14, 2022
    Publication date: January 12, 2023
    Inventors: Taichi WATANABE, Hiroyuki AKUZAWA, Amane HIGASHI
  • Patent number: 11480455
    Abstract: A physical quantity measurement device includes a housing forming a measurement flow path through which the fluid flows and a container space that houses a part of a detection unit. An inner surface of the housing includes a housing intersecting surface that intersects an arrangement direction in which the measurement flow path and the container space are arranged, a housing flow path surface extending from the housing intersecting surface toward the measurement flow path, and a housing container surface extending from the housing intersecting surface toward the container space. The housing includes a housing partition that protrudes from the inner surface toward the detection unit and contacts the detection unit between the housing and the detection unit such that the housing partition separates the measurement flow path and the container space from each other.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: October 25, 2022
    Assignee: DENSO CORPORATION
    Inventors: Hiroshi Tagawa, Hiroyuki Akuzawa, Teruaki Kaifu, Kengo Ito, Noboru Kitahara
  • Publication number: 20220333547
    Abstract: A data processing method of variable measurement data in an electronic control unit (ECU) is provided. The ECU that processes the data processing method calculates a filtering frequency based on a delay time frequency based on a transmission timing cycle of the measurement data and a processing timing cycle of the measurement data in the ECU, and also based on a pulsation frequency of the measurement data, and removes, from the measurement data, a component of the filtering frequency calculated in the calculation of the filtering frequency.
    Type: Application
    Filed: March 21, 2022
    Publication date: October 20, 2022
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Takafumi YAMADA, Hiroyuki AKUZAWA, Noboru KITAHARA, Takashi OOGA, Taichi WATANABE
  • Publication number: 20220326058
    Abstract: A measurement control device includes: a sensing unit that outputs a signal according to an air flow rate; a pulsation state calculation unit that calculates a pulsation state of pulsation generated in the air flow rate using an output value of the sensing unit; and a pulsation error correction unit that corrects the air flow rate. The pulsation state calculation unit has an upper extreme value determination unit and a frequency calculation unit. The upper extreme value determination unit cancels the upper extreme value that has presently appeared, when the output value remains to be more than a predetermined lower threshold. The upper extreme value determination unit updates the lower threshold on a basis of at least one of air flow rate, pulsation frequency, or pulsation amplitude specified on the basis of the output value.
    Type: Application
    Filed: June 23, 2022
    Publication date: October 13, 2022
    Inventors: Hiroyuki AKUZAWA, Taichi WATANABE, Amane HIGASHI
  • Publication number: 20220309129
    Abstract: A data processing method is a data processing method in which variable measurement data transmitted from a sensor at a first cycle is computationally processed at a second cycle that is longer than the first cycle. The measurement data is acquired in a third cycle that is longer than the first cycle and shorter than the second cycle, an average value of the acquired measurement data is calculated at the second cycle, and computation processing thereof is performed.
    Type: Application
    Filed: January 20, 2022
    Publication date: September 29, 2022
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Takafumi YAMADA, Hiroyuki AKUZAWA, Noboru KITAHARA, Taichi WATANABE
  • Patent number: 11448543
    Abstract: A physical quantity measurement device measures a physical quantity of a fluid. A detection unit has a physical quantity detector that detects a physical quantity of the fluid in a measurement flow channel. A housing accommodates at least a part of the detection unit and forms the measurement flow channel. The housing includes a housing attachment that is attached to a predetermined attaching target, and a position holder holding a position of the detection unit by contacting the detection unit. The housing includes an inward part positioned inward of the attaching target and an outward part positioned outward of the attaching target. The position holder is provided inward of the housing attachment in an alignment direction along which the inward part and the outward part are aligned.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: September 20, 2022
    Assignee: DENSO CORPORATION
    Inventors: Junzo Yamaguchi, Noboru Kitahara, Hiroshi Tagawa, Masaki Inoue, Hiroyuki Akuzawa
  • Publication number: 20220170771
    Abstract: A physical quantity measuring device includes a housing having a part disposed in a main passage through which a measurement target fluid flows, a sensing element configured to detect a physical quantity of the measurement target fluid, a circuit board disposed in the housing and having a mounting area on which the sensing element is mounted, a potting resin covering an electric connecting portion between the circuit board and the sensing element; and a restricting portion disposed on the circuit board in a vicinity of the mounting area to restrict the potting resin from wetting and spreading out.
    Type: Application
    Filed: February 15, 2022
    Publication date: June 2, 2022
    Inventor: Hiroyuki AKUZAWA
  • Publication number: 20220155121
    Abstract: An airflow meter includes a housing including a base surface, a rear surface, a first side surface, a second side surface, a flow-rate inlet portion, a flow-rate outlet portion, a passage, and a physical quantity inlet portion, a flow rate detector, a board, and a physical quantity detector mounted on a board surface. The physical quantity inlet portion includes a first inner surface, a second inner surface, a third inner surface, and a fourth inner surface. The physical quantity detector is configured to output signals according to a physical quantity of air flowing through a board passage. The board, the first inner surface, the third inner surface, and the fourth inner surface are arranged to reduce a cross-sectional area of the board passage from the base surface toward the rear surface.
    Type: Application
    Filed: February 2, 2022
    Publication date: May 19, 2022
    Inventors: Hajime MASHITA, Hiroyuki AKUZAWA
  • Patent number: 11313709
    Abstract: A physical quantity measurement device includes a housing forming a measurement flow path in which a sensor support supports a physical quantity sensor. The measurement flow path includes a sensor path in which the physical quantity sensor is disposed, an upstream curved path between the sensor path and an inlet, and a downstream curved path between the sensor path and an outlet. The housing includes a measurement narrowed portion that gradually narrows the measurement flow path in a direction from the inlet toward the physical quantity sensor. An upstream end of the sensor support is provided upstream of the measurement narrowed portion in an arrangement cross section along an imaginary straight line passing through the physical quantity sensor and extending in an arrangement direction in which the upstream curved path and the downstream curved path are arranged.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: April 26, 2022
    Assignee: DENSO CORPORATION
    Inventors: Hiroyuki Akuzawa, Kengo Ito, Hiroshi Tagawa, Teruaki Kaifu, Noboru Kitahara
  • Patent number: 11300434
    Abstract: A physical quantity measurement device includes a housing forming a measurement flow path including a measurement inlet and a measurement outlet. The measurement flow path includes a sensor path in which a physical quantity sensor is disposed, an upstream curved path curved to extend from the sensor path toward the measurement inlet, and a downstream curved path curved to extend from the sensor path toward the measurement outlet. An inner surface of the housing includes an upstream outer curved surface that defines an outer outline of a curved part of the upstream curved path, and a downstream outer curved surface that defines an outer outline of a curve part of the downstream curved path. A degree of recess of the downstream outer curved surface is larger than a degree of recess of the upstream outer curved surface.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: April 12, 2022
    Assignee: DENSO CORPORATION
    Inventors: Kengo Ito, Hiroyuki Akuzawa, Hiroshi Tagawa, Teruaki Kaifu, Noboru Kitahara
  • Patent number: 11255709
    Abstract: A physical quantity measurement device includes a housing forming a through flow path, and a measurement flow path branching from the through flow path. A physical quantity sensor is provided in the measurement flow path. An inner surface of the housing includes an inlet ceiling surface and an inlet floor surface which face each other and define an inlet through path that is between and connects an inlet of the through flow path and an inlet of the measurement flow path, The inlet ceiling surface includes a ceiling inclined surface that extends from the inlet of the through flow path and is inclined with respect to the inlet floor surface. A distance between the ceiling inclined surface and the inlet floor surface gradually decreases in a direction from the inlet of the through flow path toward an outlet of the through flow path.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: February 22, 2022
    Assignee: DENSO CORPORATION
    Inventors: Noboru Kitahara, Teruaki Kaifu, Kengo Ito, Hiroyuki Akuzawa, Hiroshi Tagawa
  • Publication number: 20220018697
    Abstract: A sensor recess portion is provided on a sensor back surface. A membrane portion provided with a detection element forms a bottom surface of the sensor recess portion. A sensor support portion includes a back support portion, a support recess portion, a support hole, and a support recess inner wall surface. The back support portion covers an opening of the sensor recess portion. The support recess portion is provided on a side opposite from a physical quantity sensor. The support hole penetrates the back support portion and communicates with the opening. The support recess inner wall surface extends from the support recess bottom portion and is inclined with respect to a center line of the support hole.
    Type: Application
    Filed: October 1, 2021
    Publication date: January 20, 2022
    Inventors: Takashi ENOMOTO, Kengo ITOU, Hiroyuki AKUZAWA, Hajime MASHITA, Yasushi KOUNO
  • Publication number: 20210190555
    Abstract: A sensor body contains a sensor element in a body recess opened at a body opening. A sensor substrate has a mounting surface on which a circuit element for processing a detection signal is mounted and holds the sensor body on the mounting surface. A sensor cover has a cover window penetrating between an intake passage and the body opening and covers the sensor body. A sensor filter is interposed between the sensor body and the sensor cover. A potting resin body is cured on the mounting surface so as to seal the circuit element. The sensor cover is embedded in the potting resin body on the outer peripheral side of the sensor body.
    Type: Application
    Filed: March 3, 2021
    Publication date: June 24, 2021
    Inventors: Takuma TSUCHIYA, Junzo YAMAGUCHI, Takashi ENOMOTO, Hiroyuki AKUZAWA
  • Patent number: 10962391
    Abstract: A sensor body contains a sensor element in a body recess opened at a body opening. A sensor substrate has a mounting surface on which a circuit element for processing a detection signal is mounted and holds the sensor body on the mounting surface. A sensor cover has a cover window penetrating between an intake passage and the body opening and covers the sensor body. A sensor filter is interposed between the sensor body and the sensor cover. A potting resin body is cured on the mounting surface so as to seal the circuit element. The sensor cover is embedded in the potting resin body on the outer peripheral side of the sensor body.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: March 30, 2021
    Assignee: DENSO CORPORATION
    Inventors: Takuma Tsuchiya, Junzo Yamaguchi, Takashi Enomoto, Hiroyuki Akuzawa
  • Publication number: 20200370941
    Abstract: A physical quantity measurement device includes a housing forming a measurement flow path through which the fluid flows and a container space that houses a part of a detection unit. An inner surface of the housing includes a housing intersecting surface that intersects an arrangement direction in which the measurement flow path and the container space are arranged, a housing flow path surface extending from the housing intersecting surface toward the measurement flow path, and a housing container surface extending from the housing intersecting surface toward the container space. The housing includes a housing partition that protrudes from the inner surface toward the detection unit and contacts the detection unit between the housing and the detection unit such that the housing partition separates the measurement flow path and the container space from each other.
    Type: Application
    Filed: August 5, 2020
    Publication date: November 26, 2020
    Inventors: Hiroshi TAGAWA, Hiroyuki AKUZAWA, Teruaki KAIFU, Kengo ITO, Noboru KITAHARA
  • Publication number: 20200370937
    Abstract: A physical quantity measurement device includes a housing forming a measurement flow path, a physical quantity sensor that detects a physical quantity of fluid in the measurement flow path, and a sensor support that supports the physical quantity sensor. The sensor support includes a support front surface on which the physical quantity sensor is disposed, and a support back surface behind the support front surface. The housing includes a floor surface facing a support end of the sensor support, a front wall surface facing the support front surface, and a back wall surface opposite to the front wall surface across the floor surface and facing the support back surface. A front distance between the physical quantity sensor and the front wall surface in a front-back direction is larger than a floor distance between the floor surface and the support end in a height direction orthogonal to the front-back direction.
    Type: Application
    Filed: August 5, 2020
    Publication date: November 26, 2020
    Inventors: Hiroyuki AKUZAWA, Hiroshi TAGAWA, Teruaki KAIFU, Kengo ITO, Noboru KITAHARA
  • Publication number: 20200363252
    Abstract: A physical quantity measurement device includes a housing forming a measurement flow path in which a sensor support supports a physical quantity sensor. The measurement flow path includes a sensor path in which the physical quantity sensor is disposed, an upstream curved path between the sensor path and an inlet, and a downstream curved path between the sensor path and an outlet. The housing includes a measurement narrowed portion that gradually narrows the measurement flow path in a direction from the inlet toward the physical quantity sensor. An upstream end of the sensor support is provided upstream of the measurement narrowed portion in an arrangement cross section along an imaginary straight line passing through the physical quantity sensor and extending in an arrangement direction in which the upstream curved path and the downstream curved path are arranged.
    Type: Application
    Filed: August 5, 2020
    Publication date: November 19, 2020
    Inventors: Hiroyuki AKUZAWA, Kengo ITO, Hiroshi TAGAWA, Teruaki KAIFU, Noboru KITAHARA