Patents Assigned to Aichi Steel Corporation
  • Patent number: 11970827
    Abstract: A sheet-shaped magnetic marker (1) to be laid on a road surface so as to be able to be detected by a magnetic sensor attached to a vehicle to achieve assist for driving operation of the vehicle by a driver or control on a vehicle side to achieve automatic driving independently from operation of the driver is divided into a plurality of regions in a matrix shape by a cut line (1C) cutting a magnet sheet (11) and a nonskid layer (181), with an adhesive layer being left. Thus, if peeling partially occurs, a region including the peeled part can be isolated, and expansion of peeling can be prevented.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: April 30, 2024
    Assignee: AICHI STEEL CORPORATION
    Inventors: Michiharu Yamamoto, Masaaki Nakada
  • Patent number: 11939290
    Abstract: The present invention is a heterocycle-containing amino acid compound represented by a general formula (1): wherein R1 and R2 are identical with or different from each other, and each represent a hydrogen atom or a carboxy-protecting group; R3 represents a carboxyl group or a hydroxyl group; and n is 1 or 2, or a salt thereof.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: March 26, 2024
    Assignees: TOKUSHIMA UNIVERSITY, AICHI STEEL CORPORATION
    Inventors: Kosuke Namba, Motofumi Suzuki, Akane Mera
  • Patent number: 11933633
    Abstract: A point cloud data acquiring system (1) is a system which acquires, as moving, point cloud data which serves as base data for a three-dimensional map representing a traveling environment of a vehicle includes range finding part (31) which acquires point cloud data representing azimuths and distances to planimetric features configuring the traveling environment, marker detecting part (2) which detects marker (10) laid in or on a traveling road of the vehicle, and a data recording part which records point cloud data acquired by range finding part (31) as linking thereto marker reference information including positional information with reference to any marker (10).
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: March 19, 2024
    Assignee: AICHI STEEL CORPORATION
    Inventors: Michiharu Yamamoto, Hitoshi Aoyama
  • Patent number: 11921516
    Abstract: Provided is a driving assistance system using a magnetic marker capable of providing more pieces of information. In the driving assistance system for assisting driving of a vehicle, a magnetic marker (1) including a magnet sheet (11) serving as a magnetism generating unit which generates a magnetic field and also an RFID tag (15) as an information providing unit which provides information to a vehicle side is laid on a travelling road of the vehicle, and the vehicle includes a magnetic sensor serving as a magnetism detecting unit which magnetically detects the magnetic marker (1) and also a tag reader as an information acquiring unit which acquires the information provided by the RFID tag (15) included in the magnetic marker (1).
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: March 5, 2024
    Assignee: AICHI STEEL CORPORATION
    Inventors: Michiharu Yamamoto, Tomohiko Nagao, Hitoshi Aoyama
  • Patent number: 11906307
    Abstract: A correction method for a gyro sensor which measures angular velocity of a vehicle about an axis in a vertical direction includes a generation process of performing a process on a difference between a measured azimuth obtained by performing a process on an sensor output, which is an output from the gyro sensor, and a vehicle azimuth estimated by using markers arranged along a traveling road of the vehicle to obtain correction information and a correction process of correcting the measured azimuth obtained by performing the process on the sensor output, which is the output from the gyro sensor, by using the correction information.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: February 20, 2024
    Assignee: AICHI STEEL CORPORATION
    Inventors: Michiharu Yamamoto, Kazuo Urakawa, Kota Aratani
  • Publication number: 20240055941
    Abstract: A geared motor includes a synchronous reluctance motor whose maximum rotational speed is 20000 rpm to 45000 rpm and in which rare earth bonded magnets are embedded in a rotor, and a speed reducer which reduces the rotational speed of the synchronous reluctance motor to a rotational speed in a usage range while increasing torque to a predetermined range. When a radius of the rotor is represented by R (cm) and a length of the rotor in an axial direction is represented by L (cm), the rotor has a size which satisfies conditions of 2 cm?R?6 cm and 2 cm?L?25 cm.
    Type: Application
    Filed: December 6, 2021
    Publication date: February 15, 2024
    Applicant: AICHI STEEL CORPORATION
    Inventors: Aki WATARAI, Hiroaki HIRANO, Masahiro KAYANO, Tadashi FUJIMAKI, Choongsik KIM, Hayato WATANABE, Kazunori ITO, Kazuya ISHIDA
  • Patent number: 11875675
    Abstract: A vehicle including a magnetic detecting part for detecting a magnetic marker disposed in a road is configured to acquire marker state information indicating the state of the magnetic marker from an external server apparatus via wireless communication and diagnose the state of the magnetic detecting part by using a result of detection of the magnetic marker in which the state of the magnetic marker indicated by the marker state information is good, thereby allowing inspection cost and cost of maintenance of the magnetic detecting part for detecting the magnetic marker to be suppressed.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: January 16, 2024
    Assignee: AICHI STEEL CORPORATION
    Inventors: Michiharu Yamamoto, Tomohiko Nagao, Hitoshi Aoyama
  • Publication number: 20240011231
    Abstract: A work system (1) including a work vehicle (11) which, as moving on a road (1R) where magnetic markers (10) are laid, detects the magnetic marker (10) to conduct work of preparation, maintenance, or management of the road (1R) has a control unit (13) which identifies a relative position of the work vehicle (11) with respect to the magnetic marker (10) and identifies a point to be worked on by the work vehicle (11) based on the relative position. With the work vehicle (11) conducting work at the point identified by the control unit (13), work regarding the traveling road where the magnetic markers are laid can be efficiently conducted.
    Type: Application
    Filed: August 5, 2021
    Publication date: January 11, 2024
    Applicant: Aichi Steel Corporation
    Inventors: Michiharu YAMAMOTO, Tomohiko NAGAO, Hitoshi AOYAMA
  • Patent number: 11862014
    Abstract: In a magnetic marker system including a magnetic marker disposed in a travel environment so as to be detectable by a magnetic sensor attached to a vehicle and a server apparatus which acquires detection information of the magnetic marker from each vehicle, the detection information uploaded from a vehicle side to the server apparatus includes marker information, which is identification information of a corresponding magnetic marker, and the server apparatus estimates the state of the magnetic marker based on the detection information from each vehicle.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: January 2, 2024
    Assignee: AICHI STEEL CORPORATION
    Inventors: Michiharu Yamamoto, Tomohiko Nagao, Hitoshi Aoyama
  • Publication number: 20230361661
    Abstract: A field magnet manufacturing method including reheating and softening a bonded magnet after thermal curing; and press-fitting the softened bonded magnet into a case from an opening on one side of the case. The case has a cylindrical portion and a lid portion coupled to another side of the cylindrical portion. The cylindrical portion has a fixing portion for the bonded magnet. At least the fixing portion is formed of a magnetic material. The press-fitting includes feeding the bonded magnet relatively into the cylindrical portion while allowing a relative posture variation between the bonded magnet and the case. This makes it possible to stably feed even the softened bonded magnet into the case, and the inner surface of the bonded magnet has a similar accuracy to that of the inner surface of the case.
    Type: Application
    Filed: September 30, 2020
    Publication date: November 9, 2023
    Applicant: AICHI STEEL CORPORATION
    Inventors: Satoru KAN, Hiroaki HIRANO, Hironar MITARA, Takumi ASANO, Motonobu FURUYAMA
  • Patent number: 11808575
    Abstract: A vehicle traveling control method for causing a vehicle to travel along a traveling road where magnetic markers are arrayed is a control method including an azimuth measuring process of performing a process on angular velocity, which is an output of a gyro sensor, and measuring a measured azimuth indicating an orientation of the vehicle, a control process of controlling the vehicle so that the measured azimuth is matched with a target azimuth corresponding to a direction of the traveling road, and a correction process of correcting a degree of control by the control process, in order to bring a lateral shift amount of the vehicle with reference to each of the magnetic markers closer to zero, in accordance with the lateral shift amount.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: November 7, 2023
    Assignee: AICHI STEEL CORPORATION
    Inventors: Michiharu Yamamoto, Kota Aratani, Kazuo Urakawa
  • Patent number: 11808000
    Abstract: A sheet-shaped magnetic marker to be laid on a road surface so as to be able to be detected by a magnetic sensor attached to a vehicle to achieve assist for driving operation of the vehicle by a driver or control on a vehicle side to achieve automatic driving independently from operation of the driver has a magnet sheet (11) as a magnetism generation source and a wireless tag (2) which outputs information via wireless communication to the vehicle side. In the magnetic marker, the wireless tag (2) is interposed between a sheet (11A) and a sheet (11B) configuring the magnet sheet (11), and the entire wireless tag (2) is accommodated inside the magnet sheet (11).
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: November 7, 2023
    Assignee: AICHI STEEL CORPORATION
    Inventors: Michiharu Yamamoto, Tomohiko Nagao, Masaaki Nakada, Ryota Fujimura
  • Patent number: 11801827
    Abstract: An automatic parking system which controls a vehicle so as to cause the vehicle to be moved to a parking place and accommodated in a parking frame provided in the parking place includes a route where magnetic marker is laid so as to be detectable by using a magnetic sensor array provided to the vehicle, RFID tag providing tag information capable of identifying laying position of the magnetic marker, and a control server device which identifies a vehicle position based on the laying positions of the magnetic markers, allowing highly-accurate identification of the position of the vehicle to be forwarded and allowing operation with high reliability.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: October 31, 2023
    Assignee: AICHI STEEL CORPORATION
    Inventors: Michiharu Yamamoto, Tomohiko Nagao, Hitoshi Aoyama
  • Publication number: 20230333177
    Abstract: A magneto-impedance sensor element includes a magneto-sensitive body having electromagnetic properties that vary by a magnetic field externally acting thereon; and a detection coil wound around the magneto-sensitive body, in which a voltage corresponding to the intensity of the magnetic field acting on the magneto-sensitive body is output from the detection coil by applying a pulse current or a high-frequency current to the magneto-sensitive body. The magneto-sensitive body includes a first magneto-sensitive section and a second magneto-sensitive section that are configured to carry a pulse current or a high-frequency current in opposite directions to each other.
    Type: Application
    Filed: September 10, 2021
    Publication date: October 19, 2023
    Applicant: AICHI STEEL CORPORATION
    Inventors: Michiharu YAMAMOTO, Ryusuke YAMASHITA, Shiori ITABUCHI, Shunichi TATEMATSU
  • Publication number: 20230317370
    Abstract: A field magnet manufacturing method where a bonded magnet's inner surface press-fitted in a yoke has a certain accuracy irrespective of the accuracy of the yoke's outer circumferential surface. A cylindrical bonded magnet from binding magnet particles with a thermosetting resin is fixed in a tubular yoke of magnetic material. The method includes reheating and softening the bonded magnet after thermal curing; and press-fitting in the bonded magnet after the softening step from a tapered portion on one end side of the yoke to press the bonded magnet's outer circumferential surface against the yoke's inner surface. The press-fitting includes feeding the bonded magnet relatively into the yoke while allowing a relative posture variation between the bonded magnet and the yoke so the bonded magnet's inner surface to be remolded into a shape along the inner surface of the yoke exhibits almost the same accuracy as the yoke's inner surface.
    Type: Application
    Filed: June 6, 2023
    Publication date: October 5, 2023
    Applicant: AICHI STEEL CORPORATION
    Inventors: Satoru KAN, Hiroaki HIRANO, Hironari MITARAI, Takumi ASANO, Motonobu FURUYAMA
  • Publication number: 20230271630
    Abstract: In an operation system (1) for a bus (5) including a connection point database which stores identification information of a magnetic marker (10) positioned so as to correspond to a connection point (13) between a dedicated lane (111) having magnetic markers (10) laid thereon and a general lane (112), the connection point (13) is set so as to correspond to the magnetic marker (10) according to identification information stored in a connection point database, thereby allowing flexibility in changing a route to be improved in the operation system which causes a vehicle to operate along a route defined in advance.
    Type: Application
    Filed: August 5, 2021
    Publication date: August 31, 2023
    Applicant: Aichi Steel Corporation
    Inventors: Michiharu YAMAMOTO, Tomohiko NAGAO, Hitoshi AOYAMA
  • Publication number: 20230259140
    Abstract: In a vehicle-oriented system (1) for providing information to a vehicle (5) side by using an information providing area (11) provided on a plane where a vehicle (5) moves, a magnetic distribution indicating the information by a plurality of N-pole magnetic markers (10N) is formed in the information providing area (11), and a sign (100) for identifying a position and orientation of the information providing area (11) is provided in the information providing area (11). Therefore, information can be provided by a magnetic method irrespective of a forwarding direction of the vehicle (5).
    Type: Application
    Filed: June 24, 2021
    Publication date: August 17, 2023
    Applicant: Aichi Steel Corporation
    Inventors: Michiharu YAMAMOTO, Tomohiko NAGAO, Hitoshi AOYAMA
  • Publication number: 20230250598
    Abstract: In a marker system (1) which includes a plurality of magnetic markers (10) disposed on a road surface for driving assist control of a vehicle (5) including automatic traveling control and in which a wireless tag is affixed to a partial magnetic marker (10A) of the plurality of magnetic markers (10), a sign (1M) for distinguishing between a partial magnetic marker (10A) with a wireless tag affixed thereto and another magnetic marker (10B) without a wireless tag affixed thereto is provided. Thus, it is possible to associate the detected magnetic marker (10) and the wireless tag as a transmission source of tag waves with each other with high reliability.
    Type: Application
    Filed: June 24, 2021
    Publication date: August 10, 2023
    Applicant: Aichi Steel Corporation
    Inventors: Michiharu YAMAMOTO, Tomohiko NAGAO, Hitoshi AOYAMA
  • Publication number: 20230246526
    Abstract: At least a part of a bridge portion of each electromagnetic steel sheet is modified, and electromagnetic steel sheets that have undergone the modification are stacked. This allows the bridge portions of a rotor core according to the present embodiment to have a lower magnetic permeability than that of other sites, and it is therefore possible to prevent some of the magnetic field lines from being short-circuited so as to draw a closed curve in the rotor core. Accordingly, a decrease in the efficiency of an interior permanent magnet (IPM) type rotating electric machine can be suppressed.
    Type: Application
    Filed: June 28, 2021
    Publication date: August 3, 2023
    Applicant: AICHI STEEL CORPORATION
    Inventor: Norihiko HAMADA
  • Patent number: 11710598
    Abstract: A field magnet manufacturing method where a bonded magnet's inner surface press-fitted in a yoke has a certain accuracy irrespective of the accuracy of the yoke's outer circumferential surface. A cylindrical bonded magnet from binding magnet particles with a thermosetting resin is fixed in a tubular yoke of magnetic material. The method includes reheating and softening the bonded magnet after thermal curing; and press-fitting in the bonded magnet after the softening step from a tapered portion on one end side of the yoke to press the bonded magnet's outer circumferential surface against the yoke's inner surface. The press-fitting includes feeding the bonded magnet relatively into the yoke while allowing a relative posture variation between the bonded magnet and the yoke so the bonded magnet's inner surface to be remolded into a shape along the inner surface of the yoke exhibits almost the same accuracy as the yoke's inner surface.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: July 25, 2023
    Assignee: AICHI STEEL CORPORATION
    Inventors: Satoru Kan, Hiroaki Hirano, Hironari Mitarai, Takumi Asano, Motonobu Furuyama