Patents by Inventor Toru Shimura
Toru Shimura 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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Patent number: 11287294Abstract: In order to improve the adaptability of diagnosis of an operating state of a field device, a field device 10 according to the present disclosure has a diagnoser 17 configured to diagnose an operating state of the field device 10 by hierarchically implementing a plurality of diagnostic processes. The diagnoser 17 can select whether to enable or disable a diagnostic result of at least one diagnostic process of a plurality of diagnostic processes in a diagnostic process after the one diagnostic process.Type: GrantFiled: June 14, 2019Date of Patent: March 29, 2022Assignee: YOKOGAWA ELECTRIC CORPORATIONInventors: Junichi Iwashita, Toru Shimura
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Patent number: 10698388Abstract: A field device, which measures a physical quantity in a plant or processes the physical quantity, includes: an instruction unit configured to output a verification execution instruction signal for instructing execution of verification of the field device; an operation verifying unit configured to verify an operation of at least one element of the field device in response to the verification execution instruction signal and to verify an operation of the field device based on the verification result; and an output unit configured to output the verification result which is a result of verification of the operation by the operation verifying unit.Type: GrantFiled: November 30, 2016Date of Patent: June 30, 2020Assignee: Yokogawa Electric CorporationInventors: Ikuhiko Ishikawa, Toru Shimura, Daisuke Harigane, Shinnosuke Yoshida
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Patent number: 10557745Abstract: An electromagnetic flow meter includes a flowtube including a coil disposed in the vicinity of a measurement tube, and electrodes disposed on the measurement tube, a converter including an excitation unit configured to generate an excitation signal and output the excitation signal to the coil through an excitation cable, and a detection signal receiving unit configured to receive a detection signal from the electrodes through a signal cable, and generate a flow rate signal, and a miswiring detection unit configured to perform miswiring diagnosis on the excitation cable or the signal cable on the basis of a difference between a change amount of the flow rate signal when the excitation signal is being output and a change amount of the flow rate signal when the excitation signal is not being output.Type: GrantFiled: May 31, 2017Date of Patent: February 11, 2020Assignee: Yokogawa Electric CorporationInventor: Toru Shimura
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Publication number: 20200003591Abstract: In order to improve the adaptability of diagnosis of an operating state of a field device, a field device 10 according to the present disclosure has a diagnoser 17 configured to diagnose an operating state of the field device 10 by hierarchically implementing a plurality of diagnostic processes. The diagnoser 17 can select whether to enable or disable a diagnostic result of at least one diagnostic process of a plurality of diagnostic processes in a diagnostic process after the one diagnostic process.Type: ApplicationFiled: June 14, 2019Publication date: January 2, 2020Applicant: YOKOGAWA ELECTRIC CORPORATIONInventors: Junichi Iwashita, Toru Shimura
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Patent number: 10514285Abstract: A drive circuit includes a primary power supplier which supplies a primary electric power in accordance with a state of the drive circuit, a secondary power supplier which supplies an operation electric power and an excitation electric power, an excitation current supplier which supplies an excitation current to an excitation coil, a power supply monitor which compares the voltage value of the operation electric power with a voltage threshold and outputs monitoring information, and a controller which determines whether a short circuit has occurred in the excitation coil based on the monitoring information, and stops supplying the excitation current if the short circuit has occurred. The voltage threshold is higher than a lowest voltage value with which the controller operates, and the voltage threshold is a voltage value representing that the short circuit has occurred in the excitation coil.Type: GrantFiled: August 1, 2017Date of Patent: December 24, 2019Assignee: Yokogawa Electric CorporationInventors: Toru Shimura, Gouki Nakayama, Junichi Iwashita
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Patent number: 10495498Abstract: A field device according to one aspect of the present invention includes a sensor, an analog-digital converter configured to continuously convert detected signals output from the sensor to digital signals, and a calculator configured to convert the digital signals to process values. The calculator starts acquisition of the digital signals output from the analog-digital converter at a first point in time that is delayed by a processing time required for the conversion process of the analog-digital converter from a start point of a timing signal defining a sampling section of the detected signals, and finishes the acquisition of the digital signals output from the analog-digital converter at a second point in time that is delayed by the processing time from an end point of the timing signal.Type: GrantFiled: April 15, 2016Date of Patent: December 3, 2019Assignee: Yokogawa Electric CorporationInventors: Junichi Iwashita, Toru Shimura, Daisuke Harigane, Wandong Li
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Patent number: 10274358Abstract: A first detection electrode that outputs a first flow rate signal and a second detection electrode that outputs a second flow rate signal, a differential circuit that outputs a differential flow rate signal obtained by obtaining a difference between the first flow rate signal and the second flow rate signal, an AC signal generation circuit that causes a first AC current to flow between the first detection electrode and the ground electrode and causes a second AC current with a reverse phase at the same frequency as that of the first AC current to flow between the second detection electrode and the ground electrode, and a diagnosis unit that diagnoses an abnormality of at least either of the first detection electrode or the second detection electrode based on a differential flow rate signal.Type: GrantFiled: December 21, 2016Date of Patent: April 30, 2019Assignee: Yokogawa Electric CorporationInventor: Toru Shimura
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Publication number: 20180038721Abstract: A drive circuit includes a primary power supplier which supplies a primary electric power in accordance with a state of the drive circuit, a secondary power supplier which supplies an operation electric power and an excitation electric power, an excitation current supplier which supplies an excitation current to an excitation coil, a power supply monitor which compares the voltage value of the operation electric power with a voltage threshold and outputs monitoring information, and a controller which determines whether a short circuit has occurred in the excitation coil based on the monitoring information, and stops supplying the excitation current if the short circuit has occurred. The voltage threshold is higher than a lowest voltage value with which the controller operates, and the voltage threshold is a voltage value representing that the short circuit has occurred in the excitation coil.Type: ApplicationFiled: August 1, 2017Publication date: February 8, 2018Applicant: Yokogawa Electric CorporationInventors: Toru SHIMURA, Gouki NAKAYAMA, Junichi IWASHITA
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Publication number: 20170350748Abstract: An electromagnetic flow meter includes a flowtube including a coil disposed in the vicinity of a measurement tube, and electrodes disposed on the measurement tube, a converter including an excitation unit configured to generate an excitation signal and output the excitation signal to the coil through an excitation cable, and a detection signal receiving unit configured to receive a detection signal from the electrodes through a signal cable, and generate a flow rate signal, and a miswiring detection unit configured to perform miswiring diagnosis on the excitation cable or the signal cable on the basis of a difference between a change amount of the flow rate signal when the excitation signal is being output and a change amount of the flow rate signal when the excitation signal is not being output.Type: ApplicationFiled: May 31, 2017Publication date: December 7, 2017Applicant: Yokogawa Electric CorporationInventor: Toru SHIMURA
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Patent number: 9726526Abstract: A flowmeter includes an exciter configured to excite fluid which is a measurement target, a state detector configured to detect a state of the fluid excited by the exciter, a driver configured to supply exciting current for driving the exciter, a first current detector that is disposed between the exciter and the driver, the first current detector being configured to detect the exciting current, and a processor configured to diagnose insulation deterioration of the exciter in accordance with a change of a detection result of the first current detector.Type: GrantFiled: June 29, 2015Date of Patent: August 8, 2017Assignee: Yokogawa Electric CorporationInventor: Toru Shimura
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Publication number: 20170184440Abstract: A first detection electrode that outputs a first flow rate signal and a second detection electrode that outputs a second flow rate signal, a differential circuit that outputs a differential flow rate signal obtained by obtaining a difference between the first flow rate signal and the second flow rate signal, an AC signal generation circuit that causes a first AC current to flow between the first detection electrode and the ground electrode and causes a second AC current with a reverse phase at the same frequency as that of the first AC current to flow between the second detection electrode and the ground electrode, and a diagnosis unit that diagnoses an abnormality of at least either of the first detection electrode or the second detection electrode based on a differential flow rate signal.Type: ApplicationFiled: December 21, 2016Publication date: June 29, 2017Applicant: Yokogawa Electric CorporationInventor: Toru SHIMURA
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Publication number: 20170160727Abstract: A field device, which measures a physical quantity in a plant or processes the physical quantity, includes: an instruction unit configured to output a verification execution instruction signal for instructing execution of verification of the field device; an operation verifying unit configured to verify an operation of at least one element of the field device in response to the verification execution instruction signal and to verify an operation of the field device based on the verification result; and an output unit configured to output the verification result which is a result of verification of the operation by the operation verifying unit.Type: ApplicationFiled: November 30, 2016Publication date: June 8, 2017Applicant: YOKOGAWA ELECTRIC CORPORATIONInventors: Ikuhiko ISHIKAWA, Toru SHIMURA, Daisuke HARIGANE, Shinnosuke YOSHIDA
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Publication number: 20160313155Abstract: A field device according to one aspect of the present invention includes a sensor, an analog-digital converter configured to continuously convert detected signals output from the sensor to digital signals, and a calculator configured to convert the digital signals to process values. The calculator starts acquisition of the digital signals output from the analog-digital converter at a first point in time that is delayed by a processing time required for the conversion process of the analog-digital converter from a start point of a timing signal defining a sampling section of the detected signals, and finishes the acquisition of the digital signals output from the analog-digital converter at a second point in time that is delayed by the processing time from an end point of the timing signal.Type: ApplicationFiled: April 15, 2016Publication date: October 27, 2016Applicant: Yokogawa Electric CorporationInventors: Junichi IWASHITA, Toru SHIMURA, Daisuke HARIGANE, Wandong LI
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Patent number: 9340158Abstract: An aspect of the present invention is an outer mirror in which an outer mirror main body is attached to an outer mirror attaching part of a vehicle body via an outer mirror base, characterized in that the outer mirror base has a shared base main body configured to support the outer mirror main body, and an exclusive spacer having one end abutting the shared base main body and the other end pressed against the outer mirror attaching part of the vehicle body via a gasket, wherein the exclusive spacer abuts and is fixed to the shared base main body, and an attaching screw passing through the outer mirror attaching part is threadedly attached to the exclusive spacer.Type: GrantFiled: June 14, 2013Date of Patent: May 17, 2016Assignee: MURAKAMI CORPORATIONInventors: Eiichi Nishimura, Toru Shimura
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Publication number: 20160011025Abstract: A flowmeter includes an exciter configured to excite fluid which is a measurement target, a state detector configured to detect a state of the fluid excited by the exciter, a driver configured to supply exciting current for driving the exciter, a first current detector that is disposed between the exciter and the driver, the first current detector being configured to detect the exciting current, and a processor configured to diagnose insulation deterioration of the exciter in accordance with a change of a detection result of the first current detector.Type: ApplicationFiled: June 29, 2015Publication date: January 14, 2016Applicant: YOKOGAWA ELECTRIC CORPORATIONInventor: Toru SHIMURA
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Publication number: 20150321608Abstract: An aspect of the present invention is an outer mirror in which an outer mirror main body is attached to an outer mirror attaching part of a vehicle body via an outer mirror base, characterized in that the outer mirror base has a shared base main body configured to support the outer mirror main body, and an exclusive spacer having one end abutting the shared base main body and the other end pressed against the outer mirror attaching part of the vehicle body via a gasket, wherein the exclusive spacer abuts and is fixed to the shared base main body, and an attaching screw passing through the outer mirror attaching part is threadedly attached to the exclusive spacer.Type: ApplicationFiled: June 14, 2013Publication date: November 12, 2015Applicant: MURAKAMI CORPORATIONInventors: Eiichi NISHIMURA, Toru SHIMURA
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Publication number: 20150138658Abstract: An aspect of the present invention is a door mirror having a door mirror main body attached to a door mirror attaching part of a vehicle body, the door mirror including a shared base fixed to the door mirror attaching part and configured to support the door mirror main body, which is shared, and an exclusive cover configured to cover a peripheral region of the door mirror attaching part and selected from a group of different types of exclusive covers.Type: ApplicationFiled: June 14, 2013Publication date: May 21, 2015Applicant: MURAKAMI CORPORATIONInventors: Eiichi Nishimura, Toru Shimura
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Patent number: 8047080Abstract: An electromagnetic flowmeter for giving a magnetic field to a measurement fluid, detecting an electric signal occurring in the measurement fluid according to the magnetic field, and computing a flow quantity value based on the electric signal includes a zero point measurement section for measuring a zero point of the measurement fluid; a storage section for storing the measured zero point measurement value; a determination section for determining whether or not the difference between the preceding zero point measurement value stored in the storage section and the present zero point measurement value is beyond a predetermined value range; and at least either a transmission section for transmitting the determination result or a display section for displaying the determination result when the determination section determines that the difference is beyond the predetermined value range.Type: GrantFiled: March 10, 2008Date of Patent: November 1, 2011Assignee: Yokogawa Electric CorporationInventors: Ikuhiko Ishikawa, Yasumi Koike, Toru Shimura
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Patent number: 8032257Abstract: A field equipment includes: a signal processing section; a first calculation control section for generating a first control signal which controls a start of a signal processing of the signal processing section; first and second insulating sections coupled to the first calculation control section; and a second calculation control section coupled to the first and second insulating sections and the signal processing section, the second calculation control section receiving the first control signal and then transmitting a second control signal corresponding to the first control signal to the signal processing section. The signal processing section generates a processed signal based on the second control signal. The second calculation control section receives the processed signal, then transmits data related to the first signal to the first calculation control section via the second insulating section, and then shifts to a low power consumption mode.Type: GrantFiled: June 25, 2008Date of Patent: October 4, 2011Assignee: Yokogawa Electric CorporationInventors: Yasumi Koike, Ikuhiko Ishikawa, Toru Shimura
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Publication number: 20090024254Abstract: A field equipment includes: a signal processing section; a first calculation control section for generating a first control signal which controls a start of a signal processing of the signal processing section; first and second insulating sections coupled to the first calculation control section; and a second calculation control section coupled to the first and second insulating sections and the signal processing section, the second calculation control section receiving the first control signal and then transmitting a second control signal corresponding to the first control signal to the signal processing section. The signal processing section generates a processed signal based on the second control signal. The second calculation control section receives the processed signal, then transmits data related to the first signal to the first calculation control section via the second insulating section, and then shifts to a low power consumption mode.Type: ApplicationFiled: June 25, 2008Publication date: January 22, 2009Applicant: Yokogawa Electric CorporationInventors: Yasumi KOIKE, Ikuhiko Ishikawa, Toru Shimura