Patents Assigned to Yokogawa Electric Corporation
  • Patent number: 11967191
    Abstract: Provided is a device that includes: a monitoring camera that is arranged at an entrance where an electric lock, which can read a unique ID of each key to be used, is installed, a detection unit configured to detect an operation of the electric lock, and a control unit configured to associate the unique ID of a used key with image data captured by the monitoring camera when an operation of the electric lock has been detected.
    Type: Grant
    Filed: June 2, 2021
    Date of Patent: April 23, 2024
    Assignee: Yokogawa Electric Corporation
    Inventors: Osamu Kojima, Atsushi Wada
  • Patent number: 11959851
    Abstract: An absolute thickness distribution cannot be accurately calculated with a conventional technique. A sensor device is provided that includes a plurality of magnetic sensors arranged to face an outer circumference surface of a pipeline and ultrasonic sensors arranged to face the outer circumference surface and measure a thickness of the pipeline in a measurement region in which the plurality of magnetic sensors measure a magnetic field, the ultrasonic sensors being less than the plurality of magnetic sensors.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: April 16, 2024
    Assignee: Yokogawa Electric Corporation
    Inventors: Nobuo Okabe, Satoshi Yoshitake, Kazuma Takenaka, Yoshiaki Tanaka, Shumpei Ito
  • Patent number: 11959981
    Abstract: The magnetic detector 1 according to the present disclosure includes a transmission line 10 having a linear first conductor 11 including a magnetic material, a signal generator 30 configured to input a pulse as an incident wave to the transmission line 10, and a calculator 20 configured to detect a reflected wave caused by impedance mismatching at a magnetic field application position of the transmission line 10 and the incident wave. The calculator 20 calculates a position and a strength of the magnetic field applied to the transmission line 10 on the basis of the incident wave and the reflected wave.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: April 16, 2024
    Assignee: Yokogawa Electric Corporation
    Inventor: Kazuma Takenaka
  • Patent number: 11959783
    Abstract: A field device (10) includes a sensor (11) that measures a physical quantity and outputs a measurement signal indicating a measured value, converters (12, 15, 16) that perform a predetermined conversion process on the measurement signal, and a processor (17) that outputs an output signal corresponding to the measurement signal subjected to the conversion process. The processor (17) starts verifying operational soundness of the converters (12, 15, 16) when the measurement signal subjected to the conversion process satisfies a predetermined condition, and outputs, while the operational soundness of the converters (12, 15, 16) is being verified, a signal corresponding to the measurement signal subjected to the conversion process and acquired immediately before the operational soundness of the converters (12, 15, 16) is verified, or a signal corresponding to the measurement signal indicating a predetermined measured value of the sensor (11), as the output signal.
    Type: Grant
    Filed: March 10, 2022
    Date of Patent: April 16, 2024
    Assignee: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Fumihiro Yoshida, Shunsuke Ebisumoto
  • Patent number: 11960267
    Abstract: Provided is a control apparatus including an acquisition unit configured to acquire a measurement value measured regarding control target equipment, a first control unit configured to output an operation amount of the control target equipment according to the measurement value by at least one of feedback control or feed-forward control, a second control unit configured to output an operation amount of the control target equipment according to the measurement value using a model learnt by using learning data, and a switching unit configured to perform switching between the first control unit and the second control unit by which the control target equipment is controlled.
    Type: Grant
    Filed: April 6, 2021
    Date of Patent: April 16, 2024
    Assignee: Yokogawa Electric Corporation
    Inventors: Go Takami, Fumio Nishijo, Satoru Tanaka
  • Patent number: 11956004
    Abstract: A terminal apparatus includes: a communication interface that acquires data output from a data output apparatus and supplies power to the data output apparatus; a storage that writes the data to a medium; a controller that controls the storage; a power supply that supplies power to the storage; and a power receiver that receives power from an external power source and supplies power to the communication interface and the power supply. In response to detecting a power outage and/or a voltage drop of the external power source, the controller controls the communication interface to stop supplying power to the data output apparatus.
    Type: Grant
    Filed: September 6, 2022
    Date of Patent: April 9, 2024
    Assignee: Yokogawa Electric Corporation
    Inventors: Osamu Kojima, Jun Naraoka
  • Publication number: 20240111401
    Abstract: An information processing apparatus including a processor that receives a selection from a user of a region, in a drawing in which elements are indicated by graphics, that contains the graphics, extracts from the drawing one or more first elements, indicated by the graphics, that are completely contained within the region for which the selection is received, extracts from the drawing one or more second elements, indicated by the graphics, that intersect a boundary of the region for which the selection is received, extracts a third element from the one or more second elements based on a positional relationship between the graphics indicating the one or more second elements and the boundary, and stores a set of elements including the one or more first elements and the third element in a storage as an element group selected by the user.
    Type: Application
    Filed: December 12, 2023
    Publication date: April 4, 2024
    Applicant: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Tatenobu SEKI, Takahiro KAMBE, Yuri KIMURA, Masato ANNEN
  • Publication number: 20240111641
    Abstract: A primary machine includes a primary virtual machine including a synchronization information generator configured to generate and output synchronization information based on an instruction and a result of execution of the instruction, and a fault selector configured to determine a type of fault information generated when the instruction was executed. The primary VM changes operation depending on a result of the determination of the type of fault information.
    Type: Application
    Filed: August 23, 2023
    Publication date: April 4, 2024
    Applicant: Yokogawa Electric Corporation
    Inventors: Yoshitaka Yoshida, Takeshi Toinaga
  • Patent number: 11946899
    Abstract: A measuring device includes: a first electrode and a second electrode immersed in sample water stored in a measuring tank; a motor that rotates the first electrode; and a controller that operates, based on measurement results of current flowing through the sample water, in a measuring mode. In the measuring mode, the controller calculates a concentration of a measurement target in the sample water. The motor changes a rotational velocity of the motor.
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: April 2, 2024
    Assignee: Yokogawa Electric Corporation
    Inventors: Toshihiko Kyakuno, Megumi Goto
  • Patent number: 11946786
    Abstract: Provided is a diagnostic apparatus, including a diagnostic unit configured to diagnose a condition of a vortex flowmeter using a determination result of a magnitude of a signal component of each of at least one target detection signal among the at least one detection signal detected by the vortex flowmeter having a vortex generator and a detection unit configured to detect at least one detection signal according to a vortex generated by the vortex generator, or a magnitude of a signal component of at least one of combined signals configured to linearly combine two or more of the at least one detection signal.
    Type: Grant
    Filed: December 8, 2021
    Date of Patent: April 2, 2024
    Assignee: Yokogawa Electric Corporation
    Inventors: Yoshio Uomori, Shinji Kanno, Toshiyuki Miyata, Madoka Ueno
  • Publication number: 20240102936
    Abstract: An optical device 1 includes: an optical element block 10 including optical elements that form an optical path P of light used for optical measurement, arranged around a measurement subject S so that the optical path P intersects the measurement subject S; and a rotation mechanism 20 configured to change an angle of the optical element block 10 relative to the measurement subject S so that the total length of the portion of the optical path P coincident with the measurement subject S changes.
    Type: Application
    Filed: September 27, 2023
    Publication date: March 28, 2024
    Applicant: Yokogawa Electric Corporation
    Inventor: Kodai Murayama
  • Patent number: 11940408
    Abstract: A measuring device includes: a first electrode immersed in sample water stored in a measuring tank; a second electrode immersed in the sample water; and a controller that: causes a power source to flow a current through the sample water between the first electrode and the second electrode; detects, based on a first digital signal, an interruption whereby an analog signal fluctuates by no less than a predetermined value; and calculates, based on a second digital signal, a concentration of a measurement target in the sample water. The first digital signal is acquired by sampling the analog signal with a first sampling period. The analog signal is based on the current flowing through the sample water. The second digital signal is acquired by sampling the analog signal with a second sampling period that is longer than the first sampling period.
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: March 26, 2024
    Assignee: Yokogawa Electric Corporation
    Inventors: Toshihiko Kyakuno, Yukihisa Takayama
  • Patent number: 11940326
    Abstract: A spectroscopic analysis device includes: a film that contacts a sample subject to spectroscopic analysis; a first irradiator that irradiates a first irradiation light having transition energy to decompose attached material attached to a boundary surface of the film; and an optical waveguide that transmits the first irradiation light irradiated from the first irradiator. A first evanescent wave, based on the first irradiation light, is generated on a front surface of the optical waveguide, and is then projected on an attached region of the attached material.
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: March 26, 2024
    Assignee: Yokogawa Electric Corporation
    Inventors: Kodai Murayama, Toshiyuki Saruya, Fumie Watanabe, Risa Hara
  • Patent number: 11933726
    Abstract: A measurement apparatus includes a generator that causes electromagnetic waves to be incident on a sample, a receiver that receives electromagnetic waves reflected by the sample, and a controller that controls the generator and receiver. The sample includes a first layer on which the electromagnetic waves are incident and a second layer stacked on the first layer. The controller detects whether a third layer is present between the first and second layers based on the electromagnetic waves incident on the sample from the generator and the electromagnetic waves received by the receiver. The generator causes the electromagnetic waves to be incident at an angle such that the electromagnetic waves are totally reflected between the first and third layers and/or between the first and second layers.
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: March 19, 2024
    Assignee: Yokogawa Electric Corporation
    Inventors: Syuhei Okada, Hiroaki Tanaka
  • Patent number: 11936162
    Abstract: A light source device includes a semiconductor laser that has a first end surface and a second end surface parallel to each other and forming a first resonator, and an optical system that is disposed on an optical path of laser light emitted from the semiconductor laser, that forms a second resonator with the second end surface of the semiconductor laser, and that has a reflection characteristic in which a reflectance with respect to light having a previously specified wavelength width centered at a specified center wavelength of the semiconductor laser is higher than the reflectance of the first end surface.
    Type: Grant
    Filed: July 8, 2021
    Date of Patent: March 19, 2024
    Assignees: YOKOGAWA ELECTRIC CORPORATION, YOKOGAWA TEST & MEASUREMENT CORPORATION
    Inventors: Katsushi Ota, Tsukasa Kokubo
  • Patent number: 11933609
    Abstract: The interferometer 10 according to this disclosure includes: a first optical component 12 that splits each of the P polarization component and the S polarization component of the light to be measured into the first optical path R1 and the second optical path R2 and combines the light to be measured; a second optical component 13 placed in the first optical path; a third optical component 14 that splits the light to be measured into the P polarization component and the S polarization component; and a P polarization detector 11a and an S polarization detector 11b that respectively detect the P polarization component and the S polarization component split by the third optical component, wherein the second optical component has an optical surface that changes the propagation direction of the light to be measured and gives a phase difference between the P polarization component and the S polarization component.
    Type: Grant
    Filed: December 17, 2021
    Date of Patent: March 19, 2024
    Assignees: Yokogawa Electric Corporation, Yokogawa Test & Measurement Corporation
    Inventor: Nobuhide Yamada
  • Publication number: 20240085377
    Abstract: A measurement apparatus 1 disposed with respect to a container 105 containing a liquid L. The measurement apparatus 1 includes output detectors fixed to the container 105 that output ultrasonic waves that propagate in the liquid L in the container 105 and detect the ultrasonic waves propagated in the liquid L. The measurement apparatus 1 also includes a controller 50 that measures a state of the liquid L in the container 105 based on the ultrasonic waves detected by the output detectors.
    Type: Application
    Filed: September 13, 2023
    Publication date: March 14, 2024
    Applicant: Yokogawa Electric Corporation
    Inventor: Rai Itou
  • Patent number: 11927647
    Abstract: A current measurement device (1 and 2) is for measuring a current (I) flowing through measurement target conductors (MC1 and MC2), and the current measurement device includes: a plurality of triaxial magnetic sensors (11, 12, and 13) disposed so that a magnetic sensing direction and a relative position have a prescribed relationship; a noise remover (25a) configured to remove noise components included in detection results of the plurality of triaxial magnetic sensors; a sign adder (25b) configured to add a sign to the detection results from which the noise components have been removed, based on sign information of each of the detection results of the plurality of triaxial magnetic sensors obtained at a specific point in time; and a current calculator (25c and 25d) configured to calculate a current flowing through the measurement target conductors by using the detection results to which the sign has been added by the sign adder.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: March 12, 2024
    Assignee: Yokogawa Electric Corporation
    Inventors: Kazuma Takenaka, Minako Terao, Kotaro Ogawa, Saki Kobako, Naoki Noguchi
  • Patent number: 11927483
    Abstract: A Fourier spectrophotometer includes: a light source; an interferometer configured to obtain first and second interferograms whose intensity distributions are inverted from each other from the light emitted from light source; a multiplexing optical system configured to multiplex the first and second interferograms to irradiate the sample with a resultant interferogram; a demultiplexing optical system configured to demultiplex the first and second interferograms contained in the light passing through the sample; a light receiver configured to output a first light reception signal obtained by receiving the demultiplexed first interferogram and a second light reception signal obtained by receiving the demultiplexed second interferogram; and a signal processing device configured to perform processing for obtaining a noise-removed spectrum of the wavelength component in the analysis wavelength band by using the first and second light reception signals.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: March 12, 2024
    Assignee: Yokogawa Electric Corporation
    Inventors: Yasuyuki Suzuki, Yukihiro Nakamura, Tetsushi Namatame
  • Patent number: 11921082
    Abstract: A measuring device 1 according to the present disclosure measures a state of a solution L. The measuring device 1 includes a measuring unit 10 that outputs a measurement signal associated with the state of the solution L, a protection unit 20 attached to the measuring unit 10, and a controller 40 that obtains the information on the state of the solution L on the basis of a measurement signal output from the measuring unit 10. The measuring unit 10 has a first part P1 in a usable state that contributes to output of the measurement signal by coming into contact with the solution L, and a second part that is isolated from the solution L by the protection unit 20 and is in a standby state for measurement.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: March 5, 2024
    Assignee: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Kodai Murayama, Yoshiaki Tanaka, Kenji Oishi, Masahiro Hirase, Yuzuho Iga