Magnetic marker system
    4.
    发明授权

    公开(公告)号:US11862014B2

    公开(公告)日:2024-01-02

    申请号:US17414354

    申请日:2019-12-27

    IPC分类号: G08G1/042 G06Q10/20 G08G1/01

    摘要: 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.

    Method for determining position information of a motor vehicle, and motor vehicle

    公开(公告)号:US11584249B2

    公开(公告)日:2023-02-21

    申请号:US16629288

    申请日:2018-08-13

    申请人: AUDI AG

    摘要: The disclosure relates to a method for determining position information of a motor vehicle, which has an inductive charging device with at least one charging coil, which is in particular situated in the region of the bottom of the vehicle, and a measurement means which is assigned to the charging coil to measure a magnetic field, the method having the following steps: magnetizing, by supplying current to the charging coil, at least one magnetic structure which is situated in or on a surface on which the motor vehicle drives, wherein the structure and further structures are stored together with a position indication for the respective structure in a digital map; measuring, using the measurement means, measurement data which describe the magnetic behavior of the structure; identifying the structure by evaluating the measurement data; and determining the position information depending on position indication assigned to the identified structure.

    POSITION ESTIMATION METHOD AND POSITION ESTIMATION SYSTEM

    公开(公告)号:US20230003530A1

    公开(公告)日:2023-01-05

    申请号:US17777642

    申请日:2020-11-20

    IPC分类号: G01C21/28 G08G1/042

    摘要: A position estimation system for a vehicle including a magnetic sensor which measures magnetism acting from a road surface side forming a surface of a traveling road to estimate an own vehicle position includes a map DB which stores a map (1) associated with a road-surface magnetic distribution (M2), which is a distribution of quantities of magnetism at respective points on the road surface, a magnetic distribution generation part which acquires magnetic measurement values from the magnetic sensor and generates a measured magnetic distribution, which is a distribution of magnetic measurement values, and a position estimation part which specifies an area corresponding to the measured magnetic distribution in the road-surface magnetic distribution (M2) associated with the map stored in the map DB and estimates the own vehicle position based on a position of the area corresponding to the measured magnetic distribution on the map.

    TRAFFIC PREDICTION APPARATUS, SYSTEM, METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM

    公开(公告)号:US20220262240A1

    公开(公告)日:2022-08-18

    申请号:US17622958

    申请日:2019-07-01

    申请人: NEC Corporation

    摘要: The present disclosure provides a traffic prediction apparatus, system, method and program capable of predicting the number of vehicles and the speed of vehicles in a predetermined time and in a predetermined range based on waterfall data of vehicles. The traffic prediction apparatus comprises acquisition means for acquiring waterfall data comprising a generation position of a vibration, a generation time of the vibration and an amplitude of the vibration generated by a vehicle traveling on a road, pre-processing means for transforming the acquired waterfall data, generation means for training a portion of the plurality of processed waterfall data and at least one corresponding ground truth traffic property used as plurality of labels to generate a trained model, wherein the ground truth may be obtained from a secondary acquisition means, and prediction means for predicting at least one traffic property for a processed waterfall data.

    Magnetic marker installation method

    公开(公告)号:US11236476B2

    公开(公告)日:2022-02-01

    申请号:US16972023

    申请日:2019-05-21

    IPC分类号: E01F11/00 G08G1/042

    摘要: To install, in or on a road surface of a road, a magnetic marker having retained in its outer perimeter an RFID tag including an antenna for wireless communication, an arrangement step of accommodating the magnetic marker in an accommodation hole provided to be bored in the road surface and a formation step of providing the magnetic marker with a protecting part for isolating the antenna from water are performed. With these steps, even if the periphery of the magnetic marker is submerged in water after installation, high communication performance of the RFID tag can be kept.