Patents Assigned to Yokogawa Electric Corporation
  • Publication number: 20220011063
    Abstract: A monitoring apparatus includes an interface and a controller. The interface is configured to acquire a signal that is based on the temperature of the inside of a cooling tower configured to cool a cooling target. The controller is configured to acquire the signal from the interface and calculate the temperature distribution of the inside of the cooling tower. The controller analyzes an abnormal site of the cooling tower based on the temperature distribution.
    Type: Application
    Filed: July 2, 2021
    Publication date: January 13, 2022
    Applicant: Yokogawa Electric Corporation
    Inventors: Takeshi SUZUKI, Makoto NAKAUCHI, Seiki KAWAZOE
  • Patent number: 11222526
    Abstract: A two-wire transmitter is connected to an external circuit via two transmission lines and outputs a current signal to the external circuit while using the external circuit as a power source. The two-wire transmitter includes: a measured data processing circuit that is connected to a sensor that outputs an electrical signal based on measured data and configured to output a first signal based on the measured data; a current output circuit configured to determine a current signal based on the first signal; and a shunt regulator circuit configured to determine a circuit voltage of the two-wire transmitter based on the first signal.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: January 11, 2022
    Assignee: YOKOGAWA ELECTRIC CORPORATION
    Inventor: Youichi Iwano
  • Publication number: 20220003599
    Abstract: An optical measuring device that measures one or more parameters indicating a state of a measured liquid, includes: a light source that irradiates light to the measured liquid; a light receiver that detects a measured light based on the light irradiated to the measured liquid; an optical component that is disposed on an optical path between the light source and the light receiver; and a heat source on the optical component and that has optical transparency and electrical conductivity.
    Type: Application
    Filed: July 2, 2021
    Publication date: January 6, 2022
    Applicant: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Hikaru Shimizu, Takeshi Kuwagata
  • Patent number: 11215581
    Abstract: An electric transmission mechanism according to one aspect of the present invention may include a tubular ring fixed to a shaft electively connected to an electrode, at least one brush slidably contacting with a circumferential surface of the ring, a bearing including an inner race fixed to the ring, and a housing which is fixed to an outer race of the bearing and accommodates a contact part of the ring and the brush therein.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: January 4, 2022
    Assignee: Yokogawa Electric Corporation
    Inventors: Takeshi Kuwagata, Megumi Goto, Hikaru Shimizu, Saori Handa, Yukiko Hirano, Masaru Homma, Atsushi Otaki, Hideyuki Yagihashi
  • Patent number: 11215584
    Abstract: A material defect detection device that detects a material defect in a predetermined region of metallic equipment using a magnetic field distribution in the predetermined region measured by a magnetic sensor array including a plurality of magnetic sensors, the material defect detection device including: a processor that calculates a density distribution of magnetic dipoles in the predetermined region based on the magnetic field distribution and calculates a depth distribution of material defect in the predetermined region based on the density distribution of the magnetic dipoles.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: January 4, 2022
    Assignee: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Tetsuya Ishikawa, Hideki Yoshida
  • Patent number: 11215960
    Abstract: An engineering apparatus according to the present disclosure generates generating executable code, which causes target hardware to operate, from a control application. The engineering apparatus includes an algorithm converter that converts control logic included in the control application into control logic code, a type management unit that outputs a type definition code corresponding to a data block structure of data held by a function block included in the control application, an instance management unit that outputs a memory allocation code that allocates an instance of the function block to memory, and a build controller that generates the executable code based on the control logic code, the type definition code, and the memory allocation code. Executable code for execution by target hardware is debugged while the executable code is in the form of a control application before conversion to a high-level language.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: January 4, 2022
    Assignee: YOKOGAWA ELECTRIC CORPORATION
    Inventor: Hidenori Sawahara
  • Patent number: 11211916
    Abstract: A resonant transducer includes a resonant beam which is formed on a semiconductor substrate, a support beam of which one end is connected to a part of the resonant beam at a predetermined angle, a first electrode which is connected to the resonant beam via the support beam, a second electrode which is disposed adjacent to a center of one side surface of the resonant beam, and a conductor which is disposed between the support beam and the second electrode, the conductor being connected to the first electrode.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: December 28, 2021
    Assignee: Yokogawa Electric Corporation
    Inventors: Takashi Yoshida, Yusaku Yoshida, Makoto Noro, Atsushi Yumoto, Shuhei Yoshita
  • Patent number: 11212905
    Abstract: A field device (1) includes an electronic circuit (200) connected to at least one of a sensor (600) and an actuator, a bimetal temperature switch (400) connected to a power source (100) in series with the electronic circuit (200) and configured to turn on when rising to a first temperature, a heating element (500) connectable to the power source (100) in parallel with the electronic circuit (200) and the temperature switch (400), and a housing (300) configured to house the electronic circuit (200), the temperature switch (400), and the heating element (500).
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: December 28, 2021
    Assignee: YOKOGAWA ELECTRIC CORPORATION
    Inventor: Yasumi Koike
  • Patent number: 11210077
    Abstract: Availability against hardware failure and availability against maintenance are implemented without using dedicated systems. A system is provided, including: a first host computer to execute a first virtual machine for running a first application; and a second host computer to execute a second virtual machine for running a second application, wherein in a redundant operation mode, the second host computer mirrors an executable image of the first virtual machine to an executable image of the second virtual machine while stopping the execution of the second virtual machine, and in a multi-operation mode, the second host computer mirrors an internal state of the first application to an internal state of the second application while executing the second virtual machine in parallel with the first virtual machine.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: December 28, 2021
    Assignee: Yokogawa Electric Corporation
    Inventor: Yuji Takabayashi
  • Publication number: 20210399703
    Abstract: An amplifier circuit includes: an operational amplifier that includes two input terminals and an output terminal; a voltage-dividing resistor circuit electrically connected to the output terminal and that includes a voltage-dividing terminal that outputs a potential obtained by voltage-dividing a potential of the output terminal and a feedback resistor circuit electrically connected to the voltage-dividing terminal and one of the two input terminals. The voltage-dividing resistor circuit includes a plurality of resistors that each include terminals and a switch. The plurality of resistors includes a first resistor and a second resistor. The first resistor includes a terminal that corresponds to the voltage-dividing terminal. The switch switches, from a first terminal of the first resistor to a second terminal of the second resistor, the terminal that corresponds to the voltage-dividing terminal.
    Type: Application
    Filed: June 16, 2021
    Publication date: December 23, 2021
    Applicant: YOKOGAWA ELECTRIC CORPORATION
    Inventor: Toshihiko Kyakuno
  • Patent number: 11200427
    Abstract: The invention provides methods, systems and computer program products for image based detection of occurrence of an anomalous event within a process environment. Detection of occurrence of an anomalous event comprises (i) receiving a first set of information from a first image acquisition device, (ii) analyzing the first set of information for determining whether the first image frame images an occurrence of an anomalous event, (iii) receiving a second set of information generated at a second device, wherein the second set of information represents a state of the process environment, (iv) analyzing the second set of information for determining whether an anomalous event has occurred, and (v) generating an anomaly identification decision based at least on output from analysis of the second set of information.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: December 14, 2021
    Assignee: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Subramanian Periaswamy, Nabil Ahmed Syed, Sunil Ramana Keri
  • Publication number: 20210382062
    Abstract: An analysis apparatus (1) includes a housing unit (10) that houses a biological sample (S), a staining dispenser unit (20) that fluorescently stains the biological sample (S), an image acquisition unit (30) that acquires an image of the biological sample (S), a washer unit (40) that destains the biological sample (S), a drive unit (50), and a control unit (90) that analyzes the image and controls the drive unit (50). The control unit (90) performs adjustments so that the staining dispenser unit (20) and the housing unit (10) satisfy a first position condition, performs adjustments so that the image acquisition unit (30) and the housing unit (10) satisfy a second position condition, and performs adjustments so that the washer unit (40) and the housing unit (10) satisfy a third position condition. The analysis apparatus (1) maximizes the actual photography range of information related to the biological sample.
    Type: Application
    Filed: June 9, 2021
    Publication date: December 9, 2021
    Applicants: YOKOGAWA ELECTRIC CORPORATION, University of Zurich
    Inventors: Takayuki KEI, Yohei TSUBOUCHI, Lucas PELKMANS, Gabriele GUT
  • Publication number: 20210382915
    Abstract: The present invention provides methods, systems and computer program products that enable the optimized synchronization of data between mobile client devices assigned to field operators in an industrial plant and a centralized repository for plant data. The invention optimizes synchronization of data between mobile client devices assigned to field operators in an industrial plant and a centralized repository for plant data by selecting a reduced set of data records associated with a field operator, for data synchronization based on one or more of a set of data record selection parameters, and a set of version synchronization rules to ensure that only data records that are relevant to a field operator's foreseeable activities in a shift are downloaded to the field operator's mobile client device.
    Type: Application
    Filed: June 8, 2020
    Publication date: December 9, 2021
    Applicant: Yokogawa Electric Corporation
    Inventors: Jinsong QIAN, Khac Trung Nguyen Nguyen
  • Patent number: 11194300
    Abstract: The invention provides methods, systems and computer program products for monitoring field device states within a process control system, and for detecting and responding to state changes associated with one or more field devices. Implementation of the invention involves, for each field device within a selected sub-set of the plurality of field devices, (i) retrieving a reference set or template set of field device parameter state data associated with the field device (ii) retrieving a set of current state data associated with each field device within the selected sub-set of the plurality of field devices, (iii) comparing the two sets of parameter state data for each field device within the selected sub-set of the plurality of field devices and (iv) generating and/or displaying a report representing detected deviations between the two sets of parameter state data for each field device within the selected sub-set of the plurality of field devices.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: December 7, 2021
    Assignee: Yokogawa Electric Corporation
    Inventor: Tung Ngie Tang
  • Patent number: 11194685
    Abstract: Provided is a recording medium having a verification program recorded thereon, wherein the verification program is executed by computer and causes the computer to function as: a test information acquisition unit which acquires test information showing a test signal generated by a field device installed in a plant; a result information acquisition unit which acquires result information showing a test result signal output by a monitor device installed in the plant in response to the field device generating the test signal; and a verification unit which verifies, based on the test information and the result information, whether or not a relationship is established between the test signal and the test result signal, the relationship depending on a performed change of a signal that is generated by the field device and output from the monitor device before the signal is output from a monitor device.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: December 7, 2021
    Assignee: Yokogawa Electric Corporation
    Inventors: Yusuke Yokota, Ryouhei Furihata
  • Patent number: 11181896
    Abstract: An abnormality is diagnosed in a control system including a plurality of controllers adopting a redundant configuration, a diagnosing apparatus that diagnoses a control system. The control system includes a plurality of controllers adopting a redundant configuration; and an interface apparatus that outputs control output data, which is based on a plurality of redundant pieces of control data received from the plurality of controllers, to a device under control. The diagnosing apparatus includes a statistical information acquiring section that acquires statistical information including adoption/non-adoption of the control data from each of the plurality of controllers in the interface apparatus; and a diagnosing section that diagnoses the control system based on the statistical information.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: November 23, 2021
    Assignee: Yokogawa Electric Corporation
    Inventor: Shunsuke Hayashi
  • Patent number: 11181469
    Abstract: A spectroscopic analysis device includes a light source configured to emit light including a plurality of wavelength components, a polarizer configured to convert the light emitted from the light source to a light of linearly polarized light to be radiated to a sample, a polarizing diffraction element configured to diffract and spectrally disperse a first polarization component included in the light having passed through the sample in a first direction, the polarizing diffraction element being configured to diffract and spectrally disperse a second polarization component included in the light in a second direction different from the first direction, a prism which is disposed on an exit side of the polarizing diffraction element and which has a first exit surface crossing the first direction and a second exit surface crossing the second direction, and in which angles of the first exit surface and the second exit surface with respect to a reference plane including the first direction and the second direction ar
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: November 23, 2021
    Assignee: Yokogawa Electric Corporation
    Inventors: Kodai Murayama, Atsushi Ito, Fumie Watanabe
  • Patent number: 11181475
    Abstract: A gas analysis device includes a light source configured to emit laser beam to a target gas, a reflection body which reflects the laser beam, a light reception device that receives the laser beam reflected by the reflection body, a container which contains the light source and the light reception device, and an alignment mechanism that includes an insertion member inserted from outside of the container to inside of the container to move, along a plane intersecting with the irradiation direction of the laser beam, at least any one of the light source and the light reception device.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: November 23, 2021
    Assignee: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Junichi Matsuo, Toshiki Miyasaka, Takuya Kawashima, Mamoru Hirono
  • Patent number: 11184452
    Abstract: A proxy-selection system includes an expert rule module that stores a respective set of expert rules applicable to each target device, each expert rule having a respective selection-weight factor. The intelligence module includes logic to acquire, from the separator, the categorized device data for each target device; logic to search, from the expert rule module, a respective set of expert rules which are all applicable to each target device; logic to apply the respective set of expert rules searched for each target device; logic to calculate the respective selection-weight factors of all of the respective set of expert rules applied; and logic to select one or more proxy computers based on a result of the calculation of the selection-weight factors.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: November 23, 2021
    Assignee: YOKOGAWA ELECTRIC CORPORATION
    Inventor: Wei He
  • Patent number: 11175458
    Abstract: A multi-fiber connector fiber-optic measurement device identifies a polarity type and measures an optical power of a multi-fiber connector fiber-optic patch cord. The device includes: a beam splitter that splits light from the multi-fiber connector fiber-optic patch cord into a plurality of lights; a first optical sensor that receives one of the lights split by the beam splitter and outputs a first signal according to the received light; a second optical sensor that receives another of the lights split by the beam splitter and outputs a second signal according to the received light; and a signal processor that calculates the optical power based on the first signal and identifies the polarity type based on the second signal.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: November 16, 2021
    Assignees: YOKOGAWA ELECTRIC CORPORATION, Yokogawa Test & Measurement Corporation
    Inventors: Katsushi Ota, Toshikazu Yamamoto