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    Type-II AEBS test and evaluation device and method based on BeiDou space-time reference
    1.
    发明授权
    Type-II AEBS test and evaluation device and method based on BeiDou space-time reference 有权

    公开(公告)号：US12174086B2

    公开(公告)日：2024-12-24

    申请号：US17784806

    申请日：2021-09-23

    Applicant: Southeast University

    Inventor： Qimin Xu ,  Xu Li

    IPC: G01M17/007 ,  G07C5/00 ,  G08G1/01

    Abstract: Disclosed are a Type-II Autonomous Emergency Braking System (AEBS) test and evaluation device and method based on a BeiDou space-time reference, where the device includes three parts: a roadside-end information acquisition module, a vehicle-end information acquisition module, and an integrated information processing module. The roadside-end information acquisition module can acquire accurate message sending time by means of a BeiDou time service unit: the vehicle-end information acquisition module can acquire accurate time of receiving a roadside-end message, information acquired by a combined inertial navigation unit, and audio/vibration information acquired by a Single Chip Microcomputer (SCM) embedded unit; and the integrated information processing module can implement accurate, quantitative test and evaluation of indexes such as a vehicle-road communication delay and warning signal sending time. The method of the present disclosure performs data analysis and processing based on a globally unified BeiDou space-time reference and by means of a Support Vector Machine (SVM)-based dynamic Hermite interpolation method, which has an accurate test and evaluation result. Further, the method does not have any requirements for a communication system of the type-II AEBS, thus achieving convenient testing and a wide range of application.

    High-precision vehicle positioning method based on ultra-wideband in intelligent vehicle infrastructure cooperative systems
    2.
    发明授权
    High-precision vehicle positioning method based on ultra-wideband in intelligent vehicle infrastructure cooperative systems 有权

    公开(公告)号：US11874366B2

    公开(公告)日：2024-01-16

    申请号：US17436614

    申请日：2019-05-29

    Applicant: Southeast University

    Inventor： Xu Li ,  Huaikun Gao ,  Qimin Xu

    IPC: G01S13/87 ,  G01S13/91

    CPC classification number: G01S13/878 ,  G01S13/91

    Abstract: In Intelligent Vehicle Infrastructure Cooperative Systems (IVICS), a high-precision vehicle positioning method utilizing Ultra-Wide Band (UWB) is proposed. Owing to remarkable wide band of radio signal, this UWB-based positioning method shows excellent anti-interference capability and multi-path immunity, which are essential for achieving high precision in practical traffic scenario. In this approach, several UWB nodes are deliberately deployed at the crossing with the help of roadside infrastructure in IVICS. Meanwhile, an algorithm aiming at Non Line of Sight (NLOS) error compensation is developed to improve the positioning performance. In a word, this method has been demonstrated the potential to achieve accurate, reliable, continuous and integrated localization.

    Tank truck rollover relieved control method based on electronic braking deceleration
    4.
    发明授权
    Tank truck rollover relieved control method based on electronic braking deceleration 有权

    公开(公告)号：US11603081B2

    公开(公告)日：2023-03-14

    申请号：US17764871

    申请日：2021-04-12

    Applicant: SOUTHEAST UNIVERSITY

    Inventor： Xu Li ,  Kun Wei ,  Qimin Xu

    IPC: B60T8/1755

    Abstract: For a tank truck using an EBS, the present invention provides a tank truck rollover relieved control method based on electronic braking deceleration. Firstly, a tank truck rollover scene applicable to the relieved control method is defined; then, a least square method is adopted to establish a characterization function of tank truck braking deceleration; and finally, tank truck rollover relieved control is achieved on the basis of the characterization function of the braking deceleration and the EBS. The method fits out a function expression of the tank truck braking deceleration and can automatically select a proper braking deceleration under different rollover scenes according to kinematics information of the tank truck and vehicle body information; during tank truck braking deceleration, an operation of a driver is considered, so that man-machine effective combination is achieved; and relieved braking deceleration is conducted when the tank truck is in a potential rollover risk state, a situation that emergency braking is conducted when the tank truck has high rollover risk is avoided, and tank truck rollover control stability and effectiveness are improved.

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