Patents by Inventor Takehiko Hiei
Takehiko Hiei 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).
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Publication number: 20230243863Abstract: An environment condition measurement device includes a transmitter that transmits a sound wave to a target space, a receiver that receives the sound wave transmitted by the transmitter, and a controller that obtains an environmental condition of the target space based on a propagation time from when the transmitter transmits the sound wave to when the receiver receives the sound wave. The receiver is a directional receiver with a directivity with respect to a sound wave incident at a predetermined incident angle.Type: ApplicationFiled: April 10, 2023Publication date: August 3, 2023Inventors: Takehiko HIEI, Kiyoshi KUROI, Yuta SASAI
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Publication number: 20230059444Abstract: An environment detection system includes a sound wave transmitter, a sound wave receiver, and a determination unit. The sound wave transmitter transmits a detection sound wave to a target space where an environment control device that conditions air in a space is installed. The sound wave receiver receives the detection sound wave transmitted by the sound wave transmitter. The determination unit determines a temperature or an air velocity in a first region near the environment control device, based on predetermined acquired information acquired from the environment control device. The environment detection system obtains a temperature or air velocity distribution in the target space, based on measured sound wave data. A temperature or air velocity distribution in a second region is obtained based on at least either the temperature or the air velocity in the first region determined by the determination unit and the measured sound wave data.Type: ApplicationFiled: October 27, 2022Publication date: February 23, 2023Inventors: Takehiko HIEI, Mamoru OKUMOTO, Kiyoshi KUROI
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Publication number: 20230048434Abstract: An environment detection system includes a sound wave transmitter, a sound wave receiver, and a control unit. The sound wave transmitter transmits a detection sound wave to a target space. The sound wave receiver receives the detection sound wave transmitted by the sound wave transmitter. The control unit controls the sound wave transmitter. The environment detection system detects at least either a temperature distribution or an air velocity distribution in the target space. The control unit executes a first control to regulate at least either a volume or a frequency of the detection sound wave transmitted by the sound wave transmitter so that a volume of the detection sound wave received by the sound wave receiver is higher than or equal to a predetermined reference reception volume.Type: ApplicationFiled: October 27, 2022Publication date: February 16, 2023Inventors: Takehiko HIEI, Mamoru OKUMOTO, Kazuhisa SHIGEMORI
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Patent number: 10588559Abstract: An air-conditioning control system provides an appropriate environment in accordance with a stress level of a person in a room and a use of a space in which the person stays. A deriver derives heartbeat-related parameters based on a body movement of the person. A determiner determines a stress level of the person at a current moment, based on the heartbeat-related parameters. A receiver receives a use of the space for the person. A CPU for appliance control (i) selects a heartbeat-related parameter to be changed, depending on the received use and the heartbeat-related parameters, and (ii) controls operation of the air conditioner to change the selected heartbeat-related parameter to be changed.Type: GrantFiled: June 3, 2016Date of Patent: March 17, 2020Assignee: Daikin Industries, Ltd.Inventors: Takehiko Hiei, Kazuhisa Shigemori, Sayo Toramoto
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Patent number: 10575736Abstract: A plurality of pulse position candidate extraction units characterize waves included in a vibration signal from a vibration sensor using predetermined specific forms and extract respective sets of pulse position candidates. A frequency distribution calculation unit calculates a frequency distribution of the pulse interval and a frequency distribution of variation in pulse intervals on each of the extracted sets of pulse position candidates. A distribution ratio calculation unit calculates the distribution ratio of a modal class to the total frequency in each of the calculated frequency distributions. A selection unit selects a set of pulse position candidates from among the extracted sets of pulse position candidates using the calculated relative frequencies as indicators for evaluating accuracy of the sets of pulse position candidates.Type: GrantFiled: May 13, 2016Date of Patent: March 3, 2020Assignee: Daikin Industries, Ltd.Inventors: Kazuhisa Shigemori, Takehiko Hiei, Sayo Toramoto, Chiaki Tsuboi
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Publication number: 20190365285Abstract: A biological information acquisition device includes a body motion detector that includes a pressure sensitive portion on which a body motion of a subject acts and that detects a signal indicating the body motion of the subject, and a clamp member that clamps a clothing item of the subject. The clamp member includes a first member that is disposed on the subject side of the clothing item, and a second member that is disposed on the opposite side of the clothing item from the first member. The pressure sensitive portion is disposed on the first member side.Type: ApplicationFiled: February 16, 2018Publication date: December 5, 2019Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Hiroko Kashimoto, Chika Koyama, Mamoru Okumoto, Takehiko Hiei
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Publication number: 20190351176Abstract: An oxygen concentrator includes an oxygen generation unit, an oxygen discharge unit, a respiration waveform sensor connected to at least one of a passage and a cannula, a respiration waveform storage unit that stores a respiration waveform detected by the sensor, a flow amount adjustment unit provided on the passage, and a control unit that controls the flow amount adjustment unit based on the respiration waveform detected. The passage connects the generation unit to the discharge unit. The cannula is attached to the discharge unit. The flow amount adjustment unit discharges the oxygen from the discharge unit, when the sensor does not detect the respiration waveform. The flow amount adjustment unit does not discharge the oxygen from the discharge unit for a predetermined time during an exhalation time, based on the respiration waveform detected by the respiration waveform sensor, when the sensor detects the respiration waveform.Type: ApplicationFiled: January 12, 2018Publication date: November 21, 2019Inventors: Keita KONDOU, Tomoya HIRANO, Takehiko HIEI, Makoto IWAKAME
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Publication number: 20190133530Abstract: A seat portion includes a first layer, a second layer, and a third layer that are stacked sequentially from the surface side to the inner side of the seat portion. The second layer has a higher stiffness than the third layer, and the first layer has a lower stiffness than the third layer. A pressure sensitive part has a pressure sensitive-part body arranged between the first layer and the second layer.Type: ApplicationFiled: May 13, 2016Publication date: May 9, 2019Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takehiko HIEI, Chiaki TSUBOI, Sayo TORAMOTO, Kazuhisa SHIGEMORI
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Publication number: 20190137136Abstract: An air-conditioning control system provides an appropriate environment in accordance with a stress level of a person in a room and a use of a space in which the person stays. A deriver derives heartbeat-related parameters based on a body movement of the person. A determiner determines a stress level of the person at a current moment, based on the heartbeat-related parameters. A receiver receives a use of the space for the person. A CPU for appliance control (i) selects a heartbeat-related parameter to be changed, depending on the received use and the heartbeat-related parameters, and (ii) controls operation of the air conditioner to change the selected heartbeat-related parameter to be changed.Type: ApplicationFiled: June 3, 2016Publication date: May 9, 2019Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takehiko HIEI, Kazuhisa SHIGEMORI, Sayo TORAMOTO
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Patent number: 10274218Abstract: This system correctly obtains a thermal sensation of a person in a room to provide a comfortable environment. A first parameter deriver derives, as a first parameter, a ratio of a low frequency component to a high frequency component in a variation of R-R intervals of a person, based on his/her body movement. A second parameter deriver derives, as a second parameter, any one of a coefficient of variation of R-R intervals, a respiration rate, or a heart rate of the person, based on the body movement of the person. An estimator estimates a thermal sensation of the person, based on the first parameter and the second parameter. A CPU for air-conditioning control controls an air-conditioning capacity of the air conditioner, based on a result of the estimation by the estimator.Type: GrantFiled: June 3, 2016Date of Patent: April 30, 2019Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Takehiko Hiei, Kazuhisa Shigemori, Noriyuki Okuda
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Publication number: 20190104947Abstract: A plurality of pulse position candidate extraction units characterize waves included in a vibration signal from a vibration sensor using predetermined specific forms and extract respective sets of pulse position candidates. A frequency distribution calculation unit calculates a frequency distribution of the pulse interval and a frequency distribution of variation in pulse intervals on each of the extracted sets of pulse position candidates. A distribution ratio calculation unit calculates the distribution ratio of a modal class to the total frequency in each of the calculated frequency distributions. A selection unit selects a set of pulse position candidates from among the extracted sets of pulse position candidates using the calculated relative frequencies as indicators for evaluating accuracy of the sets of pulse position candidates.Type: ApplicationFiled: May 13, 2016Publication date: April 11, 2019Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Kazuhisa SHIGEMORI, Takehiko HIEI, Sayo TORAMOTO, Chiaki TSUBOI
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Publication number: 20180231269Abstract: This system correctly obtains a thermal sensation of a person in a room to provide a comfortable environment. A first parameter deriver derives, as a first parameter, a ratio of a low frequency component to a high frequency component in a variation of R-R intervals of a person, based on his/her body movement. A second parameter deriver derives, as a second parameter, any one of a coefficient of variation of R-R intervals, a respiration rate, or a heart rate of the person, based on the body movement of the person. An estimator estimates a thermal sensation of the person, based on the first parameter and the second parameter. A CPU for air-conditioning control controls an air-conditioning capacity of the air conditioner, based on a result of the estimation by the estimator.Type: ApplicationFiled: June 3, 2016Publication date: August 16, 2018Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takehiko HIEI, Kazuhisa SHIGEMORI, Noriyuki OKUDA
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Patent number: 8114033Abstract: A sleep determination apparatus capable of detecting wakefulness of a subject before entering a hypnagogic state with high accuracy is provided. When the subject is not yet in the hypnagogic state, it is determined that the subject is asleep when a detected body movement signal continuously remains below a determination threshold for a predetermined time or longer, and that the subject is awake in other situations. When the subject has entered the hypnagogic state, it is determined that the subject is awake when the detected body movement signal continuously remains above the determination threshold for the predetermined time or longer, and that the subject is asleep in other situations.Type: GrantFiled: November 19, 2007Date of Patent: February 14, 2012Assignee: Daikin Industries, Ltd.Inventors: Takehiko Hiei, Kazuhisa Shigemori
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Publication number: 20100030118Abstract: A sleep determination apparatus capable of detecting wakefulness of a subject before entering a hypnagogic state with high accuracy is provided. When the subject is not yet in the hypnagogic state, it is determined that the subject is asleep when a detected body movement signal continuously remains below a determination threshold for a predetermined time or longer, and that the subject is awake in other situations. When the subject has entered the hypnagogic state, it is determined that the subject is awake when the detected body movement signal continuously remains above the determination threshold for the predetermined time or longer, and that the subject is asleep in other situations.Type: ApplicationFiled: November 19, 2007Publication date: February 4, 2010Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takehiko Hiei, kazuhisa Shigemori