Method and system for high integrity can bus traffic supervision in safety critical application

    公开(公告)号:US11422962B2

    公开(公告)日:2022-08-23

    申请号:US17115460

    申请日:2020-12-08

    Abstract: A method of common controller area network (CAN) bus traffic supervision on a system having a common CAN bus, a first CAN chip and a second CAN chip, the first CAN chip and the second CAN chip are coupled together with the common CAN bus, the method includes comparing a first CAN frame received from the first CAN chip to a second CAN frame received from the second CAN chip within a CAN comparison period, and detecting a failure of at least the first CAN chip or the second CAN chip. Detecting the failure of at least the first CAN chip or the second CAN chip includes determining that the first CAN frame is not identical to the second CAN frame within the CAN comparison period.

    STATIONARY STATUS RESOLUTION SYSTEM

    公开(公告)号:US20210173071A1

    公开(公告)日:2021-06-10

    申请号:US17116589

    申请日:2020-12-09

    Abstract: In some embodiments, a non-transitory computer-readable storage medium includes instructions to identify, based upon Doppler-speed determination from one or more radars, radar targets within a hitbox for determining a first stationary status of a vehicle based on tracking Doppler-speed radar targets in a hitbox region. The medium also includes instructions to identify, based upon the Doppler speed determination from the one or more radars, field-of-view (FOV) radar targets for determining a second stationary status based on a substantial number and a distribution of Doppler-speed determinations for the FOV radar targets. The medium also includes instructions to confirm, based on detecting a change in either of the first or the second stationary status of the vehicle, an acceleration sensed by an inertial measurement unit onboard the vehicle.

    METHOD FOR CBTC SYSTEM MIGRATION USING AUTONOMY PLATFORM

    公开(公告)号:US20210114640A1

    公开(公告)日:2021-04-22

    申请号:US17073182

    申请日:2020-10-16

    Abstract: A method of communication-based train control system migration includes scanning a guideway to generate surveying data and processing surveying data to calculate a 3-D representation of the guideway. Appropriate locations are determined for the communication-based control devices on the guideway. Communication-based train control devices are installed in a guideway at the determined appropriate locations and vehicles are retrofitted with an autonomy platform. Testing of the control devices and retrofit vehicles is performed. A communication-based train control system is used to control the retrofit vehicles when they operate within the guideway.

    SIGNAL ASPECT ENFORCEMENT
    86.
    发明申请

    公开(公告)号:US20210114634A1

    公开(公告)日:2021-04-22

    申请号:US17073145

    申请日:2020-10-16

    Abstract: A signal aspect enforcement method for a rail vehicle includes determining if vehicle position is unknown. The system determines if rail vehicle speed is less than a line-of-sight threshold speed. The system determines the grade of the rail. A worst-case braking distance of rail vehicle is calculated. The signal aspect is determined using a camera system and a beacon system. The system determines if the signal aspect determined by camera system is same as signal aspect determined by beacon system and, if so, determines the route of rail vehicle and speed limit of rail vehicle.

    SYSTEM AND METHOD TO DETERMINE LOW-SPEED AND STATIONARY STATE OF A RAIL VEHICLE

    公开(公告)号:US20210109207A1

    公开(公告)日:2021-04-15

    申请号:US17066946

    申请日:2020-10-09

    Abstract: A system for determining a stationary state of a rail vehicle on a track includes a first radar mounted at an end of the rail vehicle and a second radar mounted at another end of the rail vehicle. A speed sensor is mounted on the rail vehicle. A series of fixed reflective track features are found along the track. A processing unit, communicably connected with the speed sensor, the first radar and the second radar receives data from the first radar and the second radar corresponding to the distance to the fixed reflective track features and determines the stationary state or low-speed condition of the rail vehicle and checks the state or condition by comparing it with an output of the speed sensor.

    Point cloud rail asset data extraction

    公开(公告)号:US10762707B2

    公开(公告)日:2020-09-01

    申请号:US16193603

    申请日:2018-11-16

    Abstract: A method includes detecting an initialization position of a processing zone within a graphical user interface, the processing zone having boundaries and a predefined direction extending away from the initialization position, the graphical user interface comprising displayed point cloud data, the displayed point cloud data being based on a scanning of a three dimensional space. The method also includes applying a Kalman filter to the track points to identify a trajectory of a guideway and generating a model of the guideway based on the track points and the trajectory. The method further includes detecting one or more of a turnout region or an object associated with the guideway. The method additionally includes generating a map comprising the model of the guideway and one or more of the turnout region or the object, and at least one label identifying the turnout region or the object included in the map.

    METHOD AND SYSTEM FOR DETERMINING AN ESTIMATION OF AN ANEMOMETRIC PARAMETER IN AN AIRCRAFT

    公开(公告)号:US20200011701A1

    公开(公告)日:2020-01-09

    申请号:US16495057

    申请日:2018-08-31

    Abstract: A method and system for determining an estimation of an anemometric parameter of an aircraft. The anemometric parameter including an angle of attack, a sideslip angle and a calibrated airspeed. The method including obtaining an indication of a secondary surface state of the aircraft; obtaining a position indication of a horizontal primary surface; obtaining a load applied estimation on a corresponding actuator using the position indication of the horizontal primary surface and the position of the corresponding actuator; accessing a lookup table with the indication of the secondary surface state of the aircraft, the load estimation applied on the corresponding actuator, and the position of the corresponding actuator; obtaining an estimation of the anemometric parameter associated with the horizontal primary surface; providing the estimation of the anemometric parameter associated with the horizontal primary surface and wherein the lookup table is generated during a learning phase.

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