Patents by Inventor Masanori Tojima

Masanori Tojima 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).

  • Publication number: 20170122741
    Abstract: A construction machine control system for a construction machine that travels along a travel route, includes: a position detection unit that detects a position of the construction machine; a determination unit that determines whether an error in the position detected by the position detection unit is equal to or smaller than a predetermined error; a non-contact sensor that detects a position of an object around the construction machine; and a map information storage unit that extracts a detection result related to a vertical projection that protrudes vertically from a detection result of the non-contact sensor and stores the extracted detection result related to the vertical projection as map information when the determination unit determines that the error in the position detected by the position detection unit is equal to or smaller than the predetermined error.
    Type: Application
    Filed: October 30, 2015
    Publication date: May 4, 2017
    Inventors: Atsushi Sakai, Mitsuhiro Ryuman, Masanori Tojima, Akiharu Nishijima
  • Publication number: 20170031367
    Abstract: A mining machine management system includes a detection unit mounted on a mining machine that travels in a mine in which a plurality of landmarks is installed, and configured to detect a position of the landmark with respect to the mining machine in a non-contact manner, an own position detection device mounted on the mining machine, and configured to obtain an own position of the mining machine, a storage unit configured to store positions of the plurality of landmarks, the positions having been obtained in advance, as registration positions, and a processing unit configured to obtain the position of the landmark detected by the detection unit from a detection result of the detection unit and the own position, and read the registration position corresponding to the landmark from the storage unit and obtain position deviation between the registration position and the position of the landmark.
    Type: Application
    Filed: December 27, 2013
    Publication date: February 2, 2017
    Applicant: Komatsu Ltd.
    Inventors: Masanori Tojima, Mitsuhiro Ryuman
  • Publication number: 20170017238
    Abstract: A mining machine management system includes a detection unit mounted on a mining machine that travels in a mine in which a plurality of landmarks is installed, and which detects a position of the landmark with respect to the mining machine in a non-contact manner, and a traveling control unit which corrects a current position of the mining machine based on a position of the landmark, the position having been obtained in advance, and the position of the landmark obtained by the detection unit and causes the mining machine to travel by dead reckoning navigation, and which does not use at least the position of the landmark detected by the detection unit in causing the mining machine to travel by the dead reckoning navigation, when a vehicle traveling in the mine exists around the position of the landmark detected by the detection unit.
    Type: Application
    Filed: December 27, 2013
    Publication date: January 19, 2017
    Applicant: Komatsu Ltd.
    Inventors: Masanori Tojima, Mitsuhiro Ryuman
  • Publication number: 20160349753
    Abstract: A managing method of a mining machine includes: detecting a position of a landmark; and extending a first distance when a position of the landmark obtained in advance is present within a range of a second distance in a travel direction of the mining machine from a position, as a reference, where the mining machine reaches when the mining machine travels the first distance after the mining machine starts traveling by the dead reckoning navigation, when the mining machine travels in an unmanned state in a mine in which a plurality of the landmarks is located, the mining machine travels based on a detected self position and uses the dead reckoning navigation while correcting a current position of the mining machine based on a position of the landmark obtained in advance and a detected position of the landmark when the self position cannot be detected.
    Type: Application
    Filed: December 27, 2013
    Publication date: December 1, 2016
    Applicants: Komatsu Ltd., Komatsu Ltd.
    Inventors: Masanori Tojima, Mitsuhiro Ryuman
  • Patent number: 9507360
    Abstract: A mine power management system includes: a first power line provided at an ascent and configured to exchange electric power with an ascending vehicle traveling on the ascent; a second power line provided at a descent and configured to exchange electric power with a descending vehicle traveling on the descent; and a power supply and storage apparatus configured to exchange electric power at least between the first power line and the second power line.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: November 29, 2016
    Assignee: Komatsu Ltd.
    Inventors: Masanori Tojima, Kouichi Yamashita, Tsugio Sudou, Koji Takeda, Takao Nagai, Katsuhiro Kajino, Yasuhiro Yanagida, Yasuyuki Suzuki
  • Publication number: 20160224029
    Abstract: A management system of a mining machine includes a vehicle, a first antenna, in the vehicle, receiving radio waves from GPS satellites, a portable second antenna, in a releasable manner in the vehicle, receiving radio waves from the GPS satellites, a first detector, in the vehicle, detecting a position of the first antenna based on a signal from the first antenna, a second detector, in the vehicle, detecting a position of the second antenna based on a signal from the second antenna, and a processer setting a prohibited area where an entry of a mining machine is prohibited based on detection results of the first and second detectors, such that the prohibited area includes the positions of the first and second antennae.
    Type: Application
    Filed: July 30, 2013
    Publication date: August 4, 2016
    Applicant: KOMATSU LTD.
    Inventors: Masanori Tojima, Mitsuhiro Ryuman
  • Patent number: 9377779
    Abstract: A computer program product for setting a travel-restricted area for an unmanned traveling vehicle, where a travel of a vehicle traveling with no man attended is restricted in a workplace of an electric work machine that operates with electricity supplied via a cable from an external power supply, the computer program causing a computer to execute: estimating a position of the cable based on at least information on a position of the electric work machine, information on a position of a support body that supports the cable, and a length of the cable between the electric work machine and the support body, and setting the travel-restricted area based on the estimated position of the cable.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: June 28, 2016
    Assignee: Komatsu Ltd.
    Inventors: Masanori Tojima, Koji Takeda
  • Patent number: 9315107
    Abstract: A transport vehicle equipped with a current collector, includes: a vessel to load a load; a current collector that extends to receive electric power from an overhead line and contracts and retracts so as to be disposed below the vessel; and a vehicle body that rotationally drives driving wheels by at least one of the electric power from the current collector and a self-propelled driving source and on which the vessel is placed.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: April 19, 2016
    Assignee: Komatsu Ltd.
    Inventors: Masanori Tojima, Kouichi Yamashita, Tsugio Sudou, Koji Takeda
  • Publication number: 20150253776
    Abstract: A management system of a mining machine includes: a landmark that is placed at a mine and allows a non-contact sensor placed on the mining machine able to run at the mine to detect a relative position of the landmark and the mining machine; a storage device that registers a position of the landmark detected using the Global Positioning System; and a processing device that sets, upon the registration, a prohibited area where an entry of the mining machine is prohibited such that the position of the landmark is included in the prohibited area.
    Type: Application
    Filed: July 30, 2013
    Publication date: September 10, 2015
    Applicant: Komatsu Ltd.
    Inventors: Masanori Tojima, Mitsuhiro Ryuman
  • Patent number: 9022153
    Abstract: A transport vehicle equipped with a current collector, includes: a vessel to load a load; a current collector that extends to receive electric power from an overhead line and contracts and retracts so as to be disposed away from the overhead line; and a vehicle body that rotationally drives driving wheels by at least one of the electric power from the current collector and a self-propelled driving source and on which the vessel is placed; a pantograph position detector that detects a relative position of the current collector and the overhead line; and a control device that controls a driving direction of the vehicle body or gives an instruction of information with which a direction in which the vehicle body is to be operated can be recognized, so that the relative position is brought to a position where the current collector and the overhead line are connected.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: May 5, 2015
    Assignee: Komatsu Ltd.
    Inventors: Masanori Tojima, Kouichi Yamashita, Tsugio Sudou, Koji Takeda
  • Patent number: 8978851
    Abstract: A self-propelled cable relay truck includes: a power transmission relay unit to which a power supply side cable configured to perform power transmission between a power supply and the relay truck, and a work machine side cable configured to perform power transmission between an electric work machine and the relay truck are connected to perform relay of the power transmission between the power supply side cable and the work machine side cable; a travel device configured to perform traveling operation so as to be able to move the power transmission relay unit; and a movement control unit configured to perform movement control of the travel device.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: March 17, 2015
    Assignee: Komatsu Ltd.
    Inventors: Masanori Tojima, Koji Takeda, Kouichi Yamashita
  • Publication number: 20140358382
    Abstract: An operation control system for a mining machine includes, based on travel path information including at least information on moisture content of a travel path on which a mining machine operating at a mine runs, and position information being information on a position of a travel path corresponding to the travel path information, generating speed limit information for changing a speed limit for the mining machine to run on the travel path corresponding to the travel path information.
    Type: Application
    Filed: November 14, 2012
    Publication date: December 4, 2014
    Applicant: KOMATSU LTD.
    Inventors: Ryuuen Kou, Masanori Tojima, Tomonori Ozaki
  • Publication number: 20140266859
    Abstract: A dump truck with an obstacle detection mechanism capable of detecting an obstacle around a vehicle using a plurality of radars provided on peripheral of the vehicle, the dump truck includes radars arranged with respect to a vehicle center plane in a backside of a rear axle case and between joints of rear suspension cylinders on the rear axle case, wherein the radars are arranged such that irradiation center axes in a vertical direction have a predetermined angle of dip to detect an obstacle in a backside of the vehicle.
    Type: Application
    Filed: September 19, 2012
    Publication date: September 18, 2014
    Applicant: Komatsu Ltd.
    Inventors: Takeshi Kurihara, Dai Tsubone, Masaomi Machida, Yukihiro Nakanishi, Tomikazu Tanuki, Shinji Mitsuta, Masanori Tojima, Mitsuhiro Ryuman
  • Publication number: 20140107849
    Abstract: A fuel supply system includes: a fuel supply facility capable of supplying fuel; an earth-moving machine capable of traveling toward the fuel supply facility; and a control apparatus that acquires execution permission information indicating whether or not fuel can be supplied to the earth-moving machine, and is capable of executing control based on the acquired execution permission information, wherein when the control apparatus determines that fuel cannot be supplied to the earth-moving machine based on the execution permission information at a time of supplying the fuel to the earth-moving machine, the control apparatus executes entry restriction control for restricting an entry to the fuel supply facility by the earth-moving machine.
    Type: Application
    Filed: June 19, 2012
    Publication date: April 17, 2014
    Applicant: KOMATSU LTD.
    Inventors: Masanori Tojima, Tsugio Sudou, Koji Takeda, Kouichi Yamashita
  • Publication number: 20140107882
    Abstract: A computer program product for setting a travel-restricted area for an unmanned traveling vehicle, where a travel of a vehicle traveling with no man attended is restricted in a workplace of an electric work machine that operates with electricity supplied via a cable from an external power supply, the computer program causing a computer to execute: estimating a position of the cable based on at least information on a position of the electric work machine, information on a position of a support body that supports the cable, and a length of the cable between the electric work machine and the support body, and setting the travel-restricted area based on the estimated position of the cable.
    Type: Application
    Filed: June 15, 2012
    Publication date: April 17, 2014
    Applicant: KOMATSU LTD.
    Inventors: Masanori Tojima, Koji Takeda
  • Publication number: 20140069758
    Abstract: A power support system to an electric work machine includes: a cable holding unit configured to hold a cable that transmits power; a cable support pole configured to support the cable held by the cable holding unit at a position higher than a height of a vehicle that travels on a track that intersects at a position where the cable is disposed; and a travel device connected to the cable holding unit and the cable support pole and configured to perform a traveling operation so as to be able to move the cable holding unit and the cable support pole.
    Type: Application
    Filed: June 15, 2012
    Publication date: March 13, 2014
    Applicant: KOMATSU LTD.
    Inventors: Masanori Tojima, Koji Takeda, Takao Nagai, Katsuhiro Kajino
  • Publication number: 20140041951
    Abstract: A transport vehicle equipped with a current collector, includes: a vessel to load a load; a current collector that extends to receive electric power from an overhead line and contracts and retracts so as to be disposed away from the overhead line; and a vehicle body that rotationally drives driving wheels by at least one of the electric power from the current collector and a self-propelled driving source and on which the vessel is placed; a pantograph position detector that detects a relative position of the current collector and the overhead line; and a control device that controls a driving direction of the vehicle body or gives an instruction of information with which a direction in which the vehicle body is to be operated can be recognized, so that the relative position is brought to a position where the current collector and the overhead line are connected.
    Type: Application
    Filed: May 9, 2012
    Publication date: February 13, 2014
    Applicant: KOMATSU LTD.
    Inventors: Masanori Tojima, Kouichi Yamashita, Tsugio Sudou, Koji Takeda
  • Publication number: 20140032006
    Abstract: A mine power management system includes: a first power line provided at an ascent and configured to exchange electric power with an ascending vehicle traveling on the ascent; a second power line provided at a descent and configured to exchange electric power with a descending vehicle traveling on the descent; and a power supply and storage apparatus configured to exchange electric power at least between the first power line and the second power line.
    Type: Application
    Filed: May 9, 2012
    Publication date: January 30, 2014
    Applicant: KOMATSU LTD.
    Inventors: Masanori Tojima, Kouichi Yamashita, Tsugio Sudou, Koji Takeda, Takao Nagai, Katsuhiro Kajino, Yasuhiro Yanagida, Yasuyuki Suzuki
  • Publication number: 20140027229
    Abstract: A dump truck 1, which is a transport vehicle equipped with a current collector, includes a vessel 5 to load a load, a pantograph 7 that extends to receive electric power from an overhead line 8 and contracts and retracts so as to be disposed below the vessel 5, and a vehicle body 3 that rotationally drives driving wheels 32 by at least one of electric power from the pantograph 7 and a self-propelled driving source and on which the vessel 5 is placed.
    Type: Application
    Filed: May 9, 2012
    Publication date: January 30, 2014
    Applicant: KOMATSU LTD.
    Inventors: Masanori Tojima, Kouichi Yamashita, Tsugio Sudou, Koji Takeda
  • Publication number: 20140027228
    Abstract: A self-propelled cable relay truck includes: a power transmission relay unit to which a power supply side cable configured to perform power transmission between a power supply and the relay truck, and a work machine side cable configured to perform power transmission between an electric work machine and the relay truck are connected to perform relay of the power transmission between the power supply side cable and the work machine side cable; a travel device configured to perform traveling operation so as to be able to move the power transmission relay unit; and a movement control unit configured to perform movement control of the travel device.
    Type: Application
    Filed: May 9, 2012
    Publication date: January 30, 2014
    Applicant: KOMATSU LTD.
    Inventors: Masanori Tojima, Koji Takeda, Kouichi Yamashita