Patents by Inventor Katsuhito Shimizu
Katsuhito Shimizu 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: 10949423Abstract: Control facilities and incidental facilities in fields are flexibly managed. Since identification information enabling to identify uniquely information regarding control facilities of which design timing and architectures are mutually different or facilities incidental to the control facilities is encoded, pieces of identification information are coupled and uniqueness is guaranteed. Further, a parent-child relation between identifiers is constructed and the identifiers are structured as a tree structure based on the structure of the control facilities. A control facility operation management device manages combination of the structured identifiers and information of management target or combination of the structured identification information and identification information of a database.Type: GrantFiled: March 16, 2017Date of Patent: March 16, 2021Assignee: HITACHI, LTD.Inventors: Koji Amano, Katsuhito Shimizu, Wataru Sasaki, Hiroshi Suzuki, Yoshiyuki Ichioka
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Publication number: 20190179814Abstract: Control facilities and incidental facilities in fields are flexibly managed. Since identification information enabling to identify uniquely information regarding control facilities of which design timing and architectures are mutually different or facilities incidental to the control facilities is encoded, pieces of identification information are coupled and uniqueness is guaranteed. Further, a parent-child relation between identifiers is constructed and the identifiers are structured as a tree structure based on the structure of the control facilities. A control facility operation management device manages combination of the structured identifiers and information of management target or combination of the structured identification information and identification information of a database.Type: ApplicationFiled: March 16, 2017Publication date: June 13, 2019Inventors: Koji AMANO, Katsuhito SHIMIZU, Wataru SASAKI, Hiroshi SUZUKI, Yoshiyuki ICHIOKA
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Patent number: 8712557Abstract: A program editor creates a program-edit screen for a control system based on element data for representing circuit elements and operators and their attribute values. Here, the circuit elements and operators are components of sequential programs which constitute functions of the control system. The program editor which edits the element data on the created program-edit screen judges whether the data for representing the circuit elements and the operators is protected-function data or non-protected-function data and displays assembly sets of programs for implementing predetermined functions constituted by circuit elements and operators to which accesses are authenticated on the program-edit screen in a display mode different from those of the other assembly sets.Type: GrantFiled: June 24, 2011Date of Patent: April 29, 2014Assignee: Hitachi, Ltd.Inventors: Hisashi Terae, Katsuhito Shimizu, Yusaku Otsuka
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Publication number: 20110320014Abstract: A program editor creates a program-edit screen for a control system based on element data for representing circuit elements and operators and their attribute values. Here, the circuit elements and operators are components of sequential programs which constitute functions of the control system. The program editor which edits the element data on the created program-edit screen judges whether the data for representing the circuit elements and the operators is protected-function data or non-protected-function data and displays assembly sets of programs for implementing predetermined functions constituted by circuit elements and operators to which accesses are authenticated on the program-edit screen in a display mode different from those of the other assembly sets.Type: ApplicationFiled: June 24, 2011Publication date: December 29, 2011Inventors: Hisashi TERAE, Katsuhito SHIMIZU, Yusaku OTSUKA
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Publication number: 20110131348Abstract: In the disclosed control system, loops of 1st path and 2nd path are formed connecting an active CPU unit and each of RIO units, the direction of data frame transfer through the loop of 1st path being opposite to that of the data frame transfer through the loop 2nd path. Reflective electro-optical transducer modules are used in the RIO units which are connected with the active CPU unit so that a standby CPU unit can also be connected. Further, the loop of 1st path and the loop of 2nd path are formed connecting the standby CPU module and each of the RIO modules. The data frame transfer directions through the loops connecting the active CPU unit and each of the RIO units are opposite to the data frame transfer directions through the corresponding loops connecting the standby CPU unit and each of the RIO units.Type: ApplicationFiled: November 23, 2010Publication date: June 2, 2011Inventors: Akihiro Onozuka, Katsuhito Shimizu, Yusaku Otsuka, Yukiko Tahara, Masakazu Ishikawa, Eiji Kobayashi, Wataru Sasaki, Akihiro Nakano, Yuusuke Seki
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Publication number: 20090121827Abstract: A plant monitor-control system which has a display unit that displays a plurality of plant information screens and menu screens that include plant information titles prepared for each of plant information screens, the display unit displaying thereon desired plant information screens upon selection of the plant information titles in menu screens displayed thereon, thereby permitting monitor and control of a plant according to plant information screens displayed on the display unit. The plant information titles in the menu screens are displayed in the region including a text title display region and a title image display region, the text title display region displaying text titles composed of character strings, the title image display region displaying title images composed of images representing the content of the plant information screens. It permits plant information screens to be displayed easily on the display unit.Type: ApplicationFiled: November 6, 2008Publication date: May 14, 2009Inventors: Nobuhisa Osaki, Katsuhito Shimizu, Yoshiaki Niijima, Yoshinori Teraoka, Kosuke Yamaguchi
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Publication number: 20080307344Abstract: A plant monitoring apparatus and a plant operation monitoring method are disclosed, wherein the plant monitoring apparatus includes a display unit for displaying a plant monitor screen having a plurality of windows displayed in superposition with each other, a monitor unit for monitoring a status change of the plant, and a control unit for transparently displaying at least a partial area of the superposed window upon detection of a status change of the plant by the monitor unit.Type: ApplicationFiled: June 4, 2008Publication date: December 11, 2008Inventors: Nobuhisa OSAKI, Katsuhito Shimizu, Kenichi Tamaru, Kousuke Yamaguchi
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Patent number: 7292896Abstract: A multiplexing control system has a common process input/output unit for distributing process signals from sensors for measuring the same state variable of a process to digital controllers. One process input/output unit for inputting/outputting a process signal between the multiplexing control system and plant is provided for each process signal. The process input/output unit for the process signal of high importance is triplexed. A process controller having an operating function is provided to each of the triplexed process input/output units. A process input/output unit for the process signal of intermediate importance is diplexed. A process input/output unit for the process signal of low importance is monoplexed. The process signals of the diplexed process input/output units and the monoplexed process input/output unit are controlled by a controller having a master right among the process controllers.Type: GrantFiled: February 26, 2001Date of Patent: November 6, 2007Assignee: Hitachi, Ltd.Inventors: Kazuhiko Miura, Shoei Takahashi, Kazuyasu Asakura, Yoshio Maruyama, Katsuhito Shimizu, Yukiko Mori, Tohru Akatsu
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Patent number: 7292897Abstract: A multiplexing control system has a common process input/output unit for distributing process signals from sensors for measuring the same state variable of a process to digital controllers. One process input/output unit for inputting/outputting a process signal between the multiplexing control system and plant is provided for each process signal. The process input/output unit for the process signal of high importance is triplexed. A process controller having an operating function is provided to each of the triplexed process input/output units. A process input/output unit for the process signal of intermediate importance is diplexed. A process input/output unit for the process signal of low importance is monoplexed. The process signals of the diplexed process input/output units and the monoplexed process input/output unit are controlled by a controller having a master right among the process controllers.Type: GrantFiled: November 26, 2003Date of Patent: November 6, 2007Assignee: Hitachi, Ltd.Inventors: Kazuhiko Miura, Shoei Takahashi, Kazuyasu Asakura, Yoshio Maruyama, Katsuhito Shimizu, Yukiko Mori, Tohru Akatsu
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Patent number: 7152005Abstract: In order to provide an operation and maintenance planning aiding system for a power generation installation which prepares an operation plan for a plurality of power generation units by making use of actual plant data and based on a total judgment including a variety of circumstances of the machine and apparatus or the parts thereof in the power generation units, in the system the plurality of power generation units 41, 42, 51 and 52, a power supply command center 3 and a service center 1 are arranged and connected via a communication network 6, the service center 1 obtains the plant data via the communication network 6 from the plurality of power generation units 41, 42, 51 and 52, calculates in real time a power generation efficiency of a concerned power generation unit for every plurality of power generation units 41, 42, 51 and 52 by making use of the obtained plant data and design data of the concerned power generation unit and prepares an operation and maintenance plan for each of the power generation uType: GrantFiled: April 12, 2005Date of Patent: December 19, 2006Assignee: Hitachi, Ltd.Inventors: Yoshiharu Hayashi, Hidekazu Fujimura, Masao Furukawa, Katsuhito Shimizu, Yasushi Hayasaka
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Publication number: 20060271553Abstract: Documents used for process control can be managed and maintained from a document server and a terminal. In order to update the documents quickly so that an operated process is always kept in the most preferable state of operation, the document server stores and manages production documents used for actually controlling and monitoring a control system plant, whereas the terminal system is used to refer and edit plant documents. The terminal can synchronize contents of the plant documents in the document server with those in the control system before storing the synchronized plant documents in the terminal.Type: ApplicationFiled: February 15, 2006Publication date: November 30, 2006Inventors: Katsuhito Shimizu, Tooru Kimura, Yoshio Maruyama, Yukiko Mouri, Satoru Shimizu, Hidekazu Fujimura, Masao Furukawa, Yoshiharu Hayashi, Yasushi Hayasaka
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Patent number: 7107295Abstract: Documents used for process control can be managed and maintained from a document server and a terminal. In order to update the documents quickly so that an operated process is always kept in the most preferable state of operation, the document server stores and manages production documents used for actually controlling and monitoring a control system plant, whereas the terminal system is used to refer and edit plant documents. The terminal can synchronize contents of the plant documents in the document server with those in the control system before storing the synchronized plant documents in the terminal.Type: GrantFiled: January 24, 2003Date of Patent: September 12, 2006Assignee: Hitachi, Ltd.Inventors: Katsuhito Shimizu, Tooru Kimura, Yoshio Maruyama, Yukiko Mouri, Satoru Shimizu, Hidekazu Fujimura, Masao Furukawa, Yoshiharu Hayashi, Yasushi Hayasaka
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Patent number: 7065472Abstract: In order to provide an operation and maintenance planning aiding system for a power generation installation which prepares an operation plan for a plurality of power generation units by making use of actual plant data and based on a total judgement including a variety of circumstances of the machine and apparatus or the parts thereof in the power generation units, in the system the plurality of power generation units 41, 42, 51 and 52, a power supply command center 3 and a service center 1 are arranged and connected via a communication network 6, the service center 1 obtains the plant data via the communication network 6 from the plurality of power generation units 41, 42, 51 and 52, calculates in real time a power generation efficiency of a concerned power generation unit for every plurality of power generation units 41, 42 51 and 52 by making use of the obtained plant data and design data of the concerned power generation unit and prepares an operation and maintenance plan for each of the power generation uType: GrantFiled: January 13, 2004Date of Patent: June 20, 2006Assignee: Hitachi, Ltd.Inventors: Yoshiharu Hayashi, Hidekazu Fujimura, Masao Furukawa, Katsuhito Shimizu, Yasushi Hayasaka
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Publication number: 20050246068Abstract: In order to provide an operation and maintenance planning aiding system for a power generation installation which prepares an operation plan for a plurality of power generation units by making use of actual plant data and based on a total judgment including a variety of circumstances of the machine and apparatus or the parts thereof in the power generation units, in the system the plurality of power generation units 41, 42, 51 and 52, a power supply command center 3 and a service center 1 are arranged and connected via a communication network 6, the service center 1 obtains the plant data via the communication network 6 from the plurality of power generation units 41, 42, 51 and 52, calculates in real time a power generation efficiency of a concerned power generation unit for every plurality of power generation units 41, 42, 51 and 52 by making use of the obtained plant data and design data of the concerned power generation unit and prepares an operation and maintenance plan for each of the power generation uType: ApplicationFiled: April 12, 2005Publication date: November 3, 2005Applicant: Hitachi, Ltd.Inventors: Yoshiharu Hayashi, Hidekazu Fujimura, Masao Furukawa, Katsuhito Shimizu, Yasushi Hayasaka
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Patent number: 6947813Abstract: A monitoring and control system is provided having a control device, arranged in a central controller room, which provides commands to power distribution panel switch gear located in the field. The switch gear transmits and receives controlling and monitoring signals through wireless communication applying an evanescent mode. The switch gear has a power circuit connected to a plurality of devices to be operated. The switch gear is a panel comprising metal and non-metal surfaces, so that a portion of wireless waves in the evanescent mode travel out of the panel. A receiver is provided for monitoring the wireless waves that travel out of the panel. The wireless signals are compared with information stored in a diagnostics database, and are diagnostically evaluated to determine whether the signals are within a known normal operating range.Type: GrantFiled: February 13, 2004Date of Patent: September 20, 2005Assignee: Hitachi, Ltd.Inventors: Masashi Sugihara, Masayuki Fukai, Akio Ito, Katsuhito Shimizu, Satoshi Kusaka, Shigeaki Namba, Toru Kimura
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Patent number: 6907381Abstract: In order to provide an operation and maintenance planning aiding system for a power generation installation which prepares an operation plan for a plurality of power generation units by making use of actual plant data and based on a total judgment including a variety of circumstances of the machine and apparatus or the parts thereof in the power generation units, in the system the plurality of power generation units 41, 42, 51 and 52, a power supply command center 3 and a service center 1 are arranged and connected via a communication network 6, the service center 1 obtains the plant data via the communication network 6 from the plurality of power generation units 41, 42, 51 and 52, calculates in real time a power generation efficiency of a concerned power generation unit for every plurality of power generation units 41, 42 51 and 52 by making use of the obtained plant data and design data of the concerned power generation unit and prepares an operation and maintenance plan for each of the power generation unType: GrantFiled: March 29, 2004Date of Patent: June 14, 2005Assignee: Hitachi, Ltd.Inventors: Yoshiharu Hayashi, Hidekazu Fujimura, Masao Furukawa, Katsuhito Shimizu, Yasushi Hayasaka
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Patent number: 6895289Abstract: Documents used for process control can be managed and maintained from a document server and a terminal. In order to update the documents quickly so that an operated process is always kept in the most preferable state of operation, the document server stores and manages production documents used for actually controlling and monitoring a control system plant, whereas the terminal system is used to refer and edit plant documents. The terminal can synchronize contents of the plant documents in the document server with those in the control system before storing the synchronized plant documents in the terminal.Type: GrantFiled: November 12, 2002Date of Patent: May 17, 2005Assignee: Hitachi, Ltd.Inventors: Katsuhito Shimizu, Tooru Kimura, Yoshio Maruyama, Yukiko Mouri, Satoru Shimizu, Hidekazu Fujimura, Masao Furukawa, Yoshiharu Hayashi, Yasushi Hayasaka
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Patent number: 6853930Abstract: In order to provide an operation and maintenance planning aiding system for a power generation installation which prepares an operation plan for a plurality of power generation units by making use of actual plant data and based on a total judgement including a variety of circumstances of the machine and apparatus or the parts thereof in the power generation units, in the system the plurality of power generation units 41, 42, 51 and 52, a power supply command center 3 and a service center 1 are arranged and connected via a communication network 6, the service center 1 obtains the plant data via the communication network 6 from the plurality of power generation units 41, 42, 51 and 52, calculates in real time a power generation efficiency of a concerned power generation unit for every plurality of power generation units 41, 42 51 and 52 by making use of the obtained plant data and design data of the concerned power generation unit and prepares an operation and maintenance plan for each of the power generation uType: GrantFiled: September 14, 2001Date of Patent: February 8, 2005Assignee: Hitachi, Ltd.Inventors: Yoshiharu Hayashi, Hidekazu Fujimura, Masao Furukawa, Katsuhito Shimizu, Yasushi Hayasaka
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Publication number: 20040181369Abstract: In order to provide an operation and maintenance planning aiding system for a power generation installation which prepares an operation plan for a plurality of power generation units by making use of actual plant data and based on a total judgment including a variety of circumstances of the machine and apparatus or the parts thereof in the power generation units, in the system the plurality of power generation units 41, 42, 51 and 52, a power supply command center 3 and a service center 1 are arranged and connected via a communication network 6, the service center 1 obtains the plant data via the communication network 6 from the plurality of power generation units 41, 42, 51 and 52, calculates in real time a power generation efficiency of a concerned power generation unit for every plurality of power generation units 41, 42 51 and 52 by making use of the obtained plant data and design data of the concerned power generation unit and prepares an operation and maintenance plan for each of the power generation unType: ApplicationFiled: March 29, 2004Publication date: September 16, 2004Applicant: Hitachi, Ltd.Inventors: Yoshiharu Hayashi, Hidekazu Fujimura, Masao Furukawa, Katsuhito Shimizu, Yasushi Hayasaka
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Publication number: 20040162643Abstract: (Subject) Reduction in the size of the apparatus, the minimization of cable laying, and the rationalization of maintenance and diagnosis.Type: ApplicationFiled: February 13, 2004Publication date: August 19, 2004Inventors: Masashi Sugihara, Masayuki Fukai, Akio Ito, Katsuhito Shimizu, Satoshi Kusaka, Shigeaki Namba, Toru Kimura