Patents by Inventor Satoshi Yoshitake
Satoshi Yoshitake 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: 11959851Abstract: 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: GrantFiled: December 27, 2019Date of Patent: April 16, 2024Assignee: Yokogawa Electric CorporationInventors: Nobuo Okabe, Satoshi Yoshitake, Kazuma Takenaka, Yoshiaki Tanaka, Shumpei Ito
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Publication number: 20230168309Abstract: An estimation method includes: performing, for each different degree of degradation, regression analysis between a first value and a second value, wherein the first value is related to one or more reference feature points on a differential curve of a charging-discharging curve indicating a voltage value with respect to integrated current amount of a reference storage battery, and the second value is at least one of a capacity value of the reference storage battery and an internal resistance value of the reference storage battery; and estimating at least one of a capacity value of a target storage battery and an internal resistance value of the target storage battery, based on a result of the regression analysis and a third value related to one or more target feature points on a differential curve of a charging-discharging curve of the target storage battery.Type: ApplicationFiled: November 29, 2022Publication date: June 1, 2023Applicant: Yokogawa Electric CorporationInventors: Masaru Nakagomi, Satoshi Yoshitake, Masahiro Kazumi
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Publication number: 20230098799Abstract: A diagnostic device includes: a receiver that receives data of only some of battery cells constituting a storage battery system; and a controller that diagnoses the storage battery system based on the received data. The data has a voltage value and an integrated current amount value. The some of the battery cells include: a low-state MIN battery cell; a low-state MAX battery cell; a high-state MIN battery cell; and a high-state MAX battery cell. The controller executes at least one of: determining whether the battery cells are in a balanced state or an imbalance state; calculating an imbalance amount between capacities of the battery cells; or calculating a value related to a capacity of a battery cell.Type: ApplicationFiled: September 23, 2022Publication date: March 30, 2023Applicant: YOKOGAWA ELECTRIC CORPORATIONInventors: Satoshi Yoshitake, Masahiro Kazumi, Hiroshi Akahori
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Publication number: 20230093809Abstract: A diagnostic device includes: a calculator that calculates a value related to a capacity of a battery cell based on a result of comparison between a measurement Q-V curve and a reference Q-V curve, the measurement Q-V curve indicating a relation between a voltage and an integrated current amount that are obtained from measurement data of the battery cell. The calculator further calculates at least one of: an amount of capacity deterioration caused by a voltage difference between the measurement Q-V curve and the reference Q-V curve by multiplying an inclination of the measurement Q-V curve by the voltage difference, and a temporary maximum capacity after capacity deterioration caused by a change in the inclination of the measurement Q-V curve to an inclination of the reference Q-V curve.Type: ApplicationFiled: September 27, 2022Publication date: March 30, 2023Applicant: YOKOGAWA ELECTRIC CORPORATIONInventors: Satoshi Yoshitake, Hiroshi Akahori, Masahiro Kazumi
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Publication number: 20220244295Abstract: The current measurement device (1, 2) includes a first sensor (SE1) configured to detect a direct current magnetic field and a low-frequency alternating current magnetic field generated due to the current (1) flowing through the conductor (MC) to be measured, a second sensor (SE2) configured to detect alternating current magnetic fields from a low frequency to a high frequency generated due to the current (1) flowing through the conductor to be measured, a first calculator (21, 21A) configured to calculate the current flowing through the conductor to be measured from a detection result of the first sensor using distance information indicating a distance (r) between the first sensor (SE1) and the conductor (MC) to be measured, a second calculator (22) configured to calculate the current flowing through the conductor to be measured from a detection result of the second sensor, and a synthesizer (23) configured to synthesize a calculation result of the first calculator with a calculation result of the second calType: ApplicationFiled: June 17, 2020Publication date: August 4, 2022Inventors: Kazuma TAKENAKA, Kotaro OGAWA, Minako TERAO, Naoki NOGUCHI, Saki KOBAKO, Fumitake TERAO, Satoshi YOSHITAKE
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Publication number: 20220146406Abstract: 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: ApplicationFiled: December 27, 2019Publication date: May 12, 2022Inventors: Nobuo OKABE, Satoshi YOSHITAKE, Kazuma TAKENAKA, Yoshiaki TANAKA, Shumpei ITO
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Publication number: 20210259174Abstract: A deep water drawing step of drawing deep water that exists in a deep region of the sea to a surface region of the sea with an upwelling pipe (1); and a phytoplankton culturing step of culturing the phytoplankton in the upwelling pipe (1) are included to produce, as a basic producer of a food chain, a living marine resource, such as fishes and shellfishes, with phytoplankton produced in the phytoplankton culturing step.Type: ApplicationFiled: June 14, 2019Publication date: August 26, 2021Applicant: Yokogawa Electric CorporationInventors: Hirofumi NAKANISHI, Satoshi YOSHITAKE, Hiroshi IKEDA, Hisashi KOAIZAWA
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Patent number: 10361569Abstract: The present invention is a power storage service system including: quantitatively grasping the time leading up to the expression of the abnormality; capable determining possible or impossible of avoiding stopping of the function of the assembled battery system. According to the invention, a maintenance operator and a maintenance service supplier of the assembled battery system have a time margin to plan a response schedule and to prepare responding, and it can reduce the cost of responding to the maintenance by reducing and optimizing the number of response.Type: GrantFiled: December 13, 2016Date of Patent: July 23, 2019Assignee: Yokogawa Electric CorporationInventors: Hironori Hayashizaki, Satoshi Yoshitake, Ryuuta Tanaka, Jun Murai, Hideaki Horie
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Patent number: 10353009Abstract: A secondary battery capacity measuring system that estimates maximum capacities of other cells using characteristics of a deteriorated cell even when a charging process in the deteriorated cell having a smaller maximum capacity than the other cells in cells constituting a battery module ends and data for measuring the maximum capacities of the other cells cannot be acquired is provided.Type: GrantFiled: January 12, 2017Date of Patent: July 16, 2019Assignee: Yokogawa Electric CorporationInventors: Soichiro Torai, Satoshi Yoshitake, Masahiro Kazumi, Masaru Nakagomi
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Publication number: 20170212170Abstract: A secondary battery capacity measuring system that estimates maximum capacities of other cells using characteristics of a deteriorated cell even when a charging process in the deteriorated cell having a smaller maximum capacity than the other cells in cells constituting a battery module ends and data for measuring the maximum capacities of the other cells cannot be acquired is provided.Type: ApplicationFiled: January 12, 2017Publication date: July 27, 2017Applicant: YOKOGAWA ELECTRIC CORPORATIONInventors: Soichiro TORAI, Satoshi YOSHITAKE, Masahiro KAZUMI, Masaru NAKAGOMI
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Publication number: 20170170668Abstract: The present invention is a power storage service system including: quantitatively grasping the time leading up to the expression of the abnormality; capable determining possible or impossible of avoiding stopping of the function of the assembled battery system. According to the invention, a maintenance operator and a maintenance service supplier of the assembled battery system have a time margin to plan a response schedule and to prepare responding, and it can reduce the cost of responding to the maintenance by reducing and optimizing the number of response.Type: ApplicationFiled: December 13, 2016Publication date: June 15, 2017Applicant: YOKOGAWA ELECTRIC CORPORATIONInventors: Hironori HAYASHIZAKI, Satoshi YOSHITAKE, Ryuuta TANAKA, Jun MURAI, Hideaki HORIE
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Patent number: 9448287Abstract: A battery monitoring device for real-time measurement and monitoring of a battery module driving an actual load and having a plurality battery cells connected together in series, has a plurality of power and impedance calculators provided for the respective battery cells, and configured to receive voltage signals and current signals from the battery cells, respectively and to measure instantaneous power values and internal impedance characteristics of the battery cells, respectively, and a battery module state manager configured to receive output data of the power and impedance calculators via an internal bus.Type: GrantFiled: July 30, 2012Date of Patent: September 20, 2016Assignee: YOKOGAWA ELECTRIC CORPORATIONInventors: Syuhei Okada, Satoshi Yoshitake
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Patent number: 9377514Abstract: A secondary-battery maximum-capacity measuring apparatus, includes: a current dependency processing unit configured to convert an inter-terminal voltage and an open cell voltage of a secondary battery into values without depending on a load current based on an amount of change in relative value of a voltage during a time period when a constant current is drawn from the secondary battery; and an error calculation unit configured to compute errors of the inter-terminal voltage and the open cell voltage of the secondary battery, the inter-terminal voltage and the open cell voltage being converted by the current dependency processing unit.Type: GrantFiled: December 9, 2013Date of Patent: June 28, 2016Assignee: YOKOGAWA ELECTRIC CORPORATIONInventors: Satoshi Hamano, Ryuuta Tanaka, Masaru Nakagomi, Satoshi Yoshitake
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Publication number: 20140167773Abstract: A secondary-battery maximum-capacity measuring apparatus, includes: a current dependency processing unit configured to convert an inter-terminal voltage and an open cell voltage of a secondary battery into values without depending on a load current based on an amount of change in relative value of a voltage during a time period when a constant current is drawn from the secondary battery; and an error calculation unit configured to compute errors of the inter-terminal voltage and the open cell voltage of the secondary battery, the inter-terminal voltage and the open cell voltage being converted by the current dependency processing unit.Type: ApplicationFiled: December 9, 2013Publication date: June 19, 2014Applicant: YOKOGAWA ELECTRIC CORPORATIONInventors: Satoshi HAMANO, Ryuuta TANAKA, Masaru NAKAGOMI, Satoshi YOSHITAKE
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Publication number: 20130030596Abstract: A battery monitoring device for real-time measurement and monitoring of a battery module driving an actual load and having a plurality battery cells connected together in series, has a plurality of power and impedance calculators provided for the respective battery cells, and configured to receive voltage signals and current signals from the battery cells, respectively and to measure instantaneous power values and internal impedance characteristics of the battery cells, respectively, and a battery module state manager configured to receive output data of the power and impedance calculators via an internal bus.Type: ApplicationFiled: July 30, 2012Publication date: January 31, 2013Applicant: YOKOGAWA ELECTRIC CORPORATIONInventors: Syuhei OKADA, Satoshi YOSHITAKE
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Publication number: 20110173585Abstract: There is provided a battery characteristic evaluator configured to identify a circuit constant of an equivalent circuit model based on a current-voltage characteristic of a battery. The battery characteristic evaluator includes: a current waveform divider configured to divide a certain current waveform into a plurality of step functions with a plurality of infinitesimal time intervals and output the step functions; and a circuit constant optimizing unit configured to calculate the optimized circuit constant of the equivalent circuit model, based on the step functions, a measured voltage value, and equivalent circuit model data.Type: ApplicationFiled: January 6, 2011Publication date: July 14, 2011Applicant: YOKOGAWA ELECTRIC CORPORATIONInventors: Satoshi HAMANO, Masaru NAKAGOMI, Masahiro KAZUMI, Satoshi YOSHITAKE
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Publication number: 20070185947Abstract: A frequency synthesizer includes: a signal generation section for outputting a signal having a desired frequency; a noise generation section for generating a noise to be a set value; and a noise adding section for adding the noise from the noise generation section to the signal from the signal generation section.Type: ApplicationFiled: January 3, 2007Publication date: August 9, 2007Applicant: YOKOGAWA ELECTRIC CORPORATIONInventors: Satoshi Yoshitake, Ryuta Tanaka
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Patent number: 5745049Abstract: A wireless equipment diagnosis system which can perform inspection and maintenance precisely and accurately, and which comprises sensors which measure information on each equipment being diagnosed, a transponder which transmits measured data from the sensors after modulating the measured data; a portable interrogator which acquires the measured data by receiving transmitted signals from the transponder; and a host computer which diagnoses each equipment by implementing predetermined signal processing using information stored in advance and data transferred from the acquired data.Type: GrantFiled: July 15, 1996Date of Patent: April 28, 1998Assignee: Yokogawa Electric CorporationInventors: Koji Akiyama, Satoshi Yoshitake, Minoru Takeuchi, Hiroshi Shimizu, Kazuo Nagata, Kiyoshi Takai, Toshio Sekiguchi
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Patent number: 5153888Abstract: An optical laser frequency stabilizer which is simple, inexpensive, produces an unmodulated output, and a highly controlled oscillation frequency, wherein signals supplied to a master laser are modulated with a signal which is switched between four or more different levels to control the oscillation frequency of the master laser to the frequency of an absorption line; and wherein the beat frequency of signals from the master laser and a slave laser is counted by an up-down frequency counter in synchronism with the modulation signal and, in response to the obtained total count, the oscillation frequency of the slave laser is controlled to a frequency based on the center frequency of the oscillation of the master laser so that an unmodulated output is generated which is not affected by variations in the powers of the laser beams. The laser frequency can be offset from the frequency of the absorption line, and also the offset frequency can be varied continuously.Type: GrantFiled: July 30, 1991Date of Patent: October 6, 1992Assignee: Yokogawa Electric CorporationInventors: Makoto Imamura, Koji Akiyama, Satoshi Yoshitake