Driving assistance system
    61.
    发明授权

    公开(公告)号:US11356822B2

    公开(公告)日:2022-06-07

    申请号:US17243583

    申请日:2021-04-29

    摘要: Provided is a driving assistance system capable of providing more pieces of information to a vehicle side by using magnetic markers. A driving assistance system (1A) is a system including magnetic markers (1) laid on a travelling road so as to be magnetically detectable and also be able to provide code information to a vehicle side, a vehicle (5) configured to be able to magnetically detect the magnetic markers (1) and also read the code information, and a base station (6) configured to make a reply with corresponding information when receiving the code information from the vehicle (5) reading the code information.

    Marker detection system and marker detection method

    公开(公告)号:US11294090B2

    公开(公告)日:2022-04-05

    申请号:US16495117

    申请日:2018-03-23

    IPC分类号: G01V3/08 G05D1/02

    摘要: In a marker detection method for detecting magnetic markers (10) laid in a road by sensor units (11) attached to a vehicle (5), in a marker detection system (1) including two sensor units (11) arranged so as to be separated in a longitudinal direction of the vehicle (5) and two magnetic markers (10) arranged at spacings equal thereto so as to be simultaneously detectable by the two sensor units (11), magnetism generation sources simultaneously detected by the two sensor units (11) are detected as the magnetic markers (10), thereby reducing erroneous detection.

    Position capturing system and position capturing method

    公开(公告)号:US11287263B2

    公开(公告)日:2022-03-29

    申请号:US16644972

    申请日:2018-08-29

    IPC分类号: G01C21/28 G08G1/16

    摘要: A position capturing system (1) includes a vehicle (5) provided with a measuring unit (2) which magnetically detects a magnetic marker (10) laid in a road and determines a polarity thereof and a GPS unit (35) which measures a position; a database (34) having stored therein a laying position of each of magnetic markers (10) linked with polarity information of the magnetic marker (10); and a position capturing unit (32) which executes processes for capturing the position of the vehicle (5) by selecting corresponding laying position from the database (34) when any of the magnetic markers (10) is detected; and when any of the magnetic markers (10) is detected, selects the laying position located in a specified area with reference to a measured position by the GPS unit (35) and linked with polarity information which complies with the polarity of the detected magnetic marker (10).

    CORRECTION METHOD FOR GYRO SENSOR
    65.
    发明申请

    公开(公告)号:US20220074745A1

    公开(公告)日:2022-03-10

    申请号:US17417408

    申请日:2019-12-27

    摘要: 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.

    FORGED COMPONENT, METHOD FOR MANUFACTURING THE SAME, AND CONNECTING ROD

    公开(公告)号:US20220074028A1

    公开(公告)日:2022-03-10

    申请号:US17422954

    申请日:2020-02-06

    摘要: A forged component having a chemical composition including, by mass %, C: 0.30 to 0.45%, Si: 0.05 to 0.35%, Mn: 0.50 to 0.90%, P: 0.030% or less, S: 0.040 to 0.070%, Cr: 0.01 to 0.50%, Al: 0.001 to 0.050%, V: 0.25 to 0.35%, Ca: 0 to 0.0100%, N: 0.0150% or less, and the balance being Fe and unavoidable impurities, and satisfying Formulae 1 through 3. The: metal structure is a ferrite pearlite structure, and a ferrite area ratio is 30% or more; Vickers hardness is in the range of 320 to 380 HV; 0.2% yield strength is 800 MPa or more; a Charpy V-notch impact value is in the range of 15 to 25 J/cm2: and an unevenness of fracture surface (surface area/cross sectional area) of the Charpy test piece after fracture is in the range of 1.47 to 1.60.

    Marker system and operation method
    67.
    发明授权

    公开(公告)号:US11231721B2

    公开(公告)日:2022-01-25

    申请号:US16618172

    申请日:2018-06-04

    摘要: In an operation method of marker system (1) in which laying position information indicating a position where a magnetic marker (10) is laid is provided to a vehicle (3) side for achieving control for assisting driving of the vehicle (3) by using the magnetic marker (10), since positional accuracy required when laying magnetic markers (10) can be relaxed, the laying position information of the magnetic marker (10) positioned on the vehicle (3) side which performs the control for assisting driving is used as correction information to correct the laying position information indicating the position where the magnetic marker (10) is laid, and laying cost of magnetic markers (10) can be suppressed.

    Learning system and learning method for vehicles

    公开(公告)号:US11175159B2

    公开(公告)日:2021-11-16

    申请号:US16326221

    申请日:2017-08-24

    摘要: A learning system (1) for vehicles for learning a neutral point of a measurement sensor equipped in a vehicle by using a magnetic marker disposed in a traveling road includes a sensor unit (11) which detects the magnetic marker and measures a lateral shift amount of the vehicle with respect to the magnetic marker, a route information acquiring part which acquires route information indicating a shape of the traveling road, and a learning determination part which determines whether a learning condition as a condition for performing learning of the neutral point of the measurement sensor is satisfied, wherein a fluctuation range of a lateral shift amount measured by the sensor unit (11) when the vehicle is traveling a learning road as a traveling road in a constant shape is equal to or smaller than a predetermined threshold is set at least as the learning condition.

    MAGNETIC MARKER SYSTEM
    70.
    发明申请

    公开(公告)号:US20210340715A1

    公开(公告)日:2021-11-04

    申请号:US17279618

    申请日:2019-09-24

    摘要: In a magnetic marker system for achieving assists for vehicle driving operation by a driver or vehicle control for automatic driving independent from driver's operation, magnetic markers are laid so that orientations of magnetic poles are alternately reversed along a road and arranged so that magnetic fields of magnetic markers adjacent to each other as being spaced with a gap along the road interfere with each other, thereby improving reliability of detecting a magnetic marker on a vehicle side while reducing magnetic force of the magnetic marker itself.