Patents by Inventor Keiichi Katsuta
Keiichi Katsuta 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: 11938983Abstract: A train position estimation device which calculates the position of a vehicle traveling on a predetermined path and comprises a surroundings shape measurement unit that is installed in the vehicle and measures the shape of the surroundings of the current location of the vehicle and a map storage unit for storing surroundings shape data at positions measured in advance, the train position estimation device being characterized by comprising a start position estimation unit for storing the probability of presence of the vehicle at each position; a map retrieval section determination device for outputting surroundings shape data for each position in descending order of presence probability; and a matching processing device that compares the surroundings shape data for the current location with the retrieved surroundings shape data and outputs the position for which the difference therebetween is equal to or less than a predetermined threshold value.Type: GrantFiled: January 28, 2019Date of Patent: March 26, 2024Assignee: HITACHI, LTD.Inventors: Yuhi Tsutsumi, Atsushi Oda, Keiichi Katsuta, Kazuo Tokuyama
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Publication number: 20240034371Abstract: A recording unit records an installation position of a ground installation object and an installation identifier of the ground installation object for each of a plurality of the ground installation objects installed beside a track on which a vehicle of a track transport system mounted with an external sensor travels; an installation object recognition unit specifies the installation identifier from external sensor information including information detected by the external sensor and recognizes the ground installation object corresponding to the installation identifier by referring to the recording unit; and a detection distance calculation unit calculates a detection distance of the external sensor. The detection distance calculation unit calculates the detection distance of the external sensor from a self-position of the vehicle at which the ground installation object is recognized and the installation position of the ground installation object recognized by the installation object recognition unit.Type: ApplicationFiled: September 18, 2020Publication date: February 1, 2024Inventors: Atsushi ODA, Keiichi KATSUTA
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Publication number: 20240019872Abstract: The present invention addresses the problem of efficiently moving a plurality of moving objects under different rule-based control systems without impairing safety. In order to solve this problem, a moving body task estimation unit 501 estimates moving body tasks 541 of a plurality of moving bodies 1 under different rule-based control systems, an optimum route generation unit 503 searches for optimum routes 542 using various combinations of a plurality of pieces of task information, and a common movement route creation unit 504 creates a common movement route 543 for the plurality of moving bodies by overlapping the obtained optimum routes 542.Type: ApplicationFiled: October 12, 2021Publication date: January 18, 2024Inventors: Hiroyuki YAMADA, Noriyasu HASEJIMA, Go SAKAYORI, Takehito OGATA, Keiichi KATSUTA
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Publication number: 20230391385Abstract: An object of the invention is to reduce a calculation performance required for an obstacle detection device while maintaining an obstacle detection range in a wide range in an obstacle detection system where external sensor data mounted in a track transport system is used. Therefore, in the invention, an obstacle detection system includes: an external sensor configured to monitor surroundings of a train; and at least two or more obstacle detection processing units configured to perform obstacle detection processing for detecting an obstacle by using sensor data acquired by the external sensor, in which the obstacle detection processing is distributed to the two or more obstacle detection processing units according to sensor information of the sensor data.Type: ApplicationFiled: October 8, 2021Publication date: December 7, 2023Applicant: Hitachi, Ltd.Inventors: Atsushi ODA, Jun KOIKE, Keiichi KATSUTA
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Patent number: 11798410Abstract: In a traffic flow control system, communication is performed with a travel control device of a moving body passing through a transportation route and the traffic flow of the transportation route is controlled. The traffic control system includes an entry authority management unit and a communication unit. In a transportation route divided into virtual areas, the entry authority management unit manages entry authority for each area, managing tokens in a number that corresponds to the area, and guiding entry of the moving body to the area by attaching entry authority to a token and delivering the resulting token to the travel control device. The communication unit communicates the entry authority and tokens to the travel control device.Type: GrantFiled: May 15, 2020Date of Patent: October 24, 2023Assignee: HITACHI, LTD.Inventors: Keiichi Katsuta, Junya Takahashi, Takehito Ogata, Wataru Tanaka, Mariko Mizuochi, Kentaroh Maki
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Publication number: 20230334995Abstract: The purpose is to provide a mobile body control system that can more appropriately perform control of a mobile body capable of vertical takeoff and landing. Comprised are a ground monitoring device (10), and a mobile body control device (20) that can communicate with the ground monitoring device (10). The mobile body control device (20) controls the flight of mobile bodies (51, 61, 71) that are capable of vertical takeoff and landing. The ground monitoring device (10) allocates flight routes (52, 62, 72) when the mobile bodies (51, 61, 71) do takeoff and landing, and is also characterized in that when there is an interference space (80) between one flight route (62) and another flight route (72), unless the one fight route (62) is reserved, flight is not permitted on that flight route.Type: ApplicationFiled: February 26, 2021Publication date: October 19, 2023Inventors: Kenji IMAMOTO, Mikio BANDO, Takahiro ITO, Keiichi KATSUTA
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RUNNING PATTERN CREATION DEVICE AND DRIVING CONTROL METHOD THAT USES RUNNING PATTERN CREATION DEVICE
Publication number: 20230052777Abstract: A running pattern creation device includes: a coordinate system that is formed of a positional coordinate axis and a vehicle velocity axis; a stopping avoidance zone position holding unit 1 configured to hold positional information on a stopping avoidance zone of a vehicle 8; a vehicle condition holding unit 2 configured to hold at least information on respective accelerations at an acceleration time, a deceleration time and a coasting time with respect to specification of the vehicle 8; a braking pattern creation unit 3 configured to create a braking pattern that is a pattern for stopping the vehicle 8 at a position other than the stopping avoidance zone using the positional information and information on acceleration at the deceleration time; a coasting pattern creation unit 4 configured to create a coasting pattern that is a pattern for stopping the vehicle 8 at a position other than the stopping avoidance zone using the positional information and the information on acceleration at the coasting time; an obType: ApplicationFiled: August 31, 2020Publication date: February 16, 2023Applicant: HITACHI, LTD.Inventors: Yuhi TSUTSUMI, Keiji MAEKAWA, Atsushi ODA, Keiichi KATSUTA, Masaki TSUJI -
Publication number: 20220284809Abstract: In a traffic flow control system, communication is performed with a travel control device of a moving body passing through a transportation route and the traffic flow of the transportation route is controlled. The traffic control system includes an entry authority management unit and a communication unit. In a transportation route divided into virtual areas, the entry authority management unit manages entry authority for each area, managing tokens in a number that corresponds to the area, and guiding entry of the moving body to the area by attaching entry authority to a token and delivering the resulting token to the travel control device. The communication unit communicates the entry authority and tokens to the travel control device.Type: ApplicationFiled: May 15, 2020Publication date: September 8, 2022Inventors: Keiichi KATSUTA, Junya TAKAHASHI, Takehito OGATA, Wataru TANAKA, Mariko MIZUOCHI, Kentaroh MAKI
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Publication number: 20210001902Abstract: A train position estimation device which calculates the position of a vehicle traveling on a predetermined path and comprises a surroundings shape measurement unit that is installed in the vehicle and measures the shape of the surroundings of the current location of the vehicle and a map storage unit for storing surroundings shape data at positions measured in advance, the train position estimation device being characterized by comprising a start position estimation unit for storing the probability of presence of the vehicle at each position; a map retrieval section determination device for outputting surroundings shape data for each position in descending order of presence probability; and a matching processing device that compares the surroundings shape data for the current location with the retrieved surroundings shape data and outputs the position for which the difference therebetween is equal to or less than a predetermined threshold value.Type: ApplicationFiled: January 28, 2019Publication date: January 7, 2021Inventors: Yuhi TSUTSUMI, Atsushi ODA, Keiichi KATSUTA, Kazuo TOKUYAMA
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Patent number: 8924050Abstract: In a railway signalling system which transmits a control order to an on-board signalling system by a trackside signalling system, the on-board signalling system being mounted on a train running on a line and the control order being compliant with a signalling system of the line, the present invention allows the train to run through into lines with different signalling systems using a single on-board signalling system. When the train enters a line with a different signalling system from a current line, the on-board signalling system installs a train control application program compliant with the signalling system of the entering line. Then, the on-board signalling system executes the train control application program, allowing the train to be controlled on the entering line according to a control order created by the trackside signalling system of the entering line.Type: GrantFiled: July 17, 2012Date of Patent: December 30, 2014Assignee: Hitachi, Ltd.Inventors: Keiichi Katsuta, Yoichi Sugita, Keiji Maekawa, Naoki Shibata, Kenji Imamoto, Motonari Suzuki
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Patent number: 8548654Abstract: A message that contains train on-track information and reservation information of a train detection section and direction information and reservation information of a switch is circulated among a train detector, switch machine, signal device controller and a route indicating device. Via a signaling message, the train detector transmits the train detection result to the signal device controller and the route indicating device, the switch machine can transmit switch condition to the signal device controller, the route indicating device transmits route reservation to the switch machine and the signal device controller. Based on the transmitted train detection result, switch condition and route reservation condition, the signal device controller transmits travel permission or travel non-permission for the assigned route to a train.Type: GrantFiled: December 19, 2006Date of Patent: October 1, 2013Assignee: Hitachi, Ltd.Inventors: Keiichi Katsuta, Dai Watanabe, Yoichi Sugita
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Publication number: 20130024054Abstract: In a railway signalling system which transmits a control order to an on-board signalling system by a trackside signalling system, the on-board signalling system being mounted on a train running on a line and the control order being compliant with a signalling system of the line, the present invention allows the train to run through into lines with different signalling systems using a single on-board signalling system. When the train enters a line with a different signalling system from a current line, the on-board signalling system installs a train control application program compliant with the signalling system of the entering line. Then, the on-board signalling system executes the train control application program, allowing the train to be controlled on the entering line according to a control order created by the trackside signalling system of the entering line.Type: ApplicationFiled: July 17, 2012Publication date: January 24, 2013Inventors: Keiichi KATSUTA, Yoichi SUGITA, Keiji MAEKAWA, Naoki SHIBATA, Kenji IMAMOTO, Motonari SUZUKI
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Patent number: 7756613Abstract: Trains and points are patrolled by a telegram containing the block occupancy information as a section that only one train is permitted to occupy, the information for giving lock position instructions to a point, and the point position information. This telegram is updated in order to get the right of block occupancy that is not held by other trains, and to give lock position instruction to the point. The train checks the block which this train is allowed to occupy, confirms that the point in this block has been set to the lock position specified by this train. Reading the aforementioned telegram, the point checks the lock position instruction given to itself and controls its lock position. A signaling system characterized by reduced designing and manufacturing costs is provided.Type: GrantFiled: February 15, 2006Date of Patent: July 13, 2010Assignee: Hitachi, Ltd.Inventors: Keiichi Katsuta, Yoichi Sugita, Dai Watanabe, Takashi Yamaguchi
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Publication number: 20070162199Abstract: A message that contains train on-track information and reservation information of a train detection section and direction information and reservation information of a switch is circulated among a train detector, switch machine, signal device controller and a route indicating device. The train detector updates train on-track information of a train detection section contained in the signaling message, the switch machine updates switch direction information in the signaling message, and the route indicating device updates reservation information of the train detection section and the switch contained in the signaling message.Type: ApplicationFiled: December 19, 2006Publication date: July 12, 2007Applicant: Hitachi, Ltd.Inventors: Keiichi Katsuta, Dai Watanabe, Yoichi Sugita
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Publication number: 20060195236Abstract: Trains and points are patrolled by a telegram containing the block occupancy information as a section that only one train is permitted to occupy, the information for giving lock position instructions to a point, and the point position information. This telegram is updated in order to get the right of block occupancy that is not held by other trains, and to give lock position instruction to the point. The train checks the block which this train is allowed to occupy, confirms that the point in this block has been set to the lock position specified by this train. Reading the aforementioned telegram, the point checks the lock position instruction given to itself and controls its lock position. A signaling system characterized by reduced designing and manufacturing costs is provided.Type: ApplicationFiled: February 15, 2006Publication date: August 31, 2006Applicant: HITACHI, LTD.Inventors: Keiichi Katsuta, Yoichi Sugita, Dai Watanabe, Takashi Yamaguchi