HARDWARE-BASED TIME SYNCHRONIZATION FOR HETEROGENEOUS SENSORS IN AUTONOMOUS VEHICLES

    公开(公告)号:US20250030531A1

    公开(公告)日:2025-01-23

    申请号:US18907297

    申请日:2024-10-04

    Applicant: TUSIMPLE, INC.

    Abstract: Devices, systems, and methods for hardware-based time synchronization for heterogenous sensors are described. An example method includes generating a plurality of input trigger pulses having a nominal pulse-per-second (PPS) rate, generating, based on timing information derived from the plurality of input trigger pulses, a plurality of output trigger pulses, and transmitting the plurality of output trigger pulses to a sensor of a plurality of sensors, wherein a frequency of the plurality of output trigger pulses corresponds to a target operating frequency of the sensor, wherein, in a case that a navigation system coupled to the synchronization unit is functioning correctly, the plurality of input trigger pulses is generated based on a nominal PPS signal from the navigation unit, and wherein, in a case that the navigation system is not functioning correctly, the plurality of input trigger pulses is generated based on a simulated clock source of the synchronization unit.

    EXPOSURE TIME CONTROL USING MAP DATA
    25.
    发明公开

    公开(公告)号:US20230276133A1

    公开(公告)日:2023-08-31

    申请号:US18172576

    申请日:2023-02-22

    Applicant: TuSimple, Inc.

    CPC classification number: H04N23/73 H04N23/71 B60R11/04

    Abstract: Disclosed are devices, systems and methods for controlling exposure time of an image sensor mounted on a vehicle. One exemplary method includes configuring map data to include location information associated with exposure time information for the image sensor; obtaining an initial exposure time for the image sensor based on the map data; and adjusting the initial exposure time to obtain a target exposure time for the image sensor based on real time parameters.

    LIGHTING CONTROL FOR AUTONOMOUS VEHICLES
    26.
    发明公开

    公开(公告)号:US20230226967A1

    公开(公告)日:2023-07-20

    申请号:US18188550

    申请日:2023-03-23

    Applicant: TuSimple, Inc.

    CPC classification number: B60W50/14 B60Q1/507 B60R16/0231 B60Q1/1415

    Abstract: Devices, systems and methods for controlling an exterior and dashboard lights of an autonomous vehicle are described. One example of a method for controlling one or more exterior lights includes receiving, from an autonomous driving system (ADS) of the vehicle, an input to control one or more exterior lights that are part of a lighting system of the vehicle, and transmitting, based on the input, a message to a controller area network (CAN) bus of the lighting system, the message being further based on a driver command upon a determination that a driver-initiated message is received. In an example, the lighting system of the vehicle further comprises a plurality of dashboard lights.

    TECHNIQUES TO CONTROL AN ENGINE FOR AUTONOMOUS DRIVING OPERATIONS

    公开(公告)号:US20230174113A1

    公开(公告)日:2023-06-08

    申请号:US17986816

    申请日:2022-11-14

    Applicant: TuSimple, Inc.

    Abstract: The disclosed technology enables an in-vehicle control computer located in an autonomous vehicle to control torque applied by an engine in the autonomous vehicle. An example method of autonomous driving operation includes sending, by a computer located on the vehicle, instructions to one or more devices located on the vehicle that cause the vehicle to perform autonomous driving related operations in accordance with the instructions, where the sending the instructions includes sending a set of torque related values over time to control an engine located in the vehicle, where the set of torque related values are not converted to control parameters indicative of positions associated with an accelerator pedal located in the vehicle; receiving an indication that indicates that the accelerator pedal is depressed from an undepressed position; and causing, in response to the receiving the indication, the vehicle to not perform additional autonomous driving related operations.

    VEHICLE WEIGHT DISTRIBUTION DETERMINATION

    公开(公告)号:US20220381602A1

    公开(公告)日:2022-12-01

    申请号:US17819304

    申请日:2022-08-11

    Applicant: TUSIMPLE, INC.

    Abstract: Techniques are described for determining weight distribution of a vehicle. A method of performing autonomous driving operation includes determining a vehicle weight distribution that values for each axle of the vehicle that describe weight or pressure applied on a respective axle. The values of the vehicle weight distribution are determined by removing at least one value that is outside a range of pre-determined values from a set of sensor values. The method further includes determining a driving-related operation of the vehicle weight distribution. For example, the driving-related operation may include determining a braking amount for each axle and/or determining a maximum steering angle to operate the vehicle. The method further includes controlling one or more subsystems in the vehicle via an instruction related to the driving-related operation. For example, transmitting the instruction to the one or more subsystems causes the vehicle to perform the driving-related operation.

    DETERMINING AN ANGLE BETWEEN A TOW VEHICLE AND A TRAILER

    公开(公告)号:US20210181338A1

    公开(公告)日:2021-06-17

    申请号:US17187088

    申请日:2021-02-26

    Applicant: TUSIMPLE, INC.

    Abstract: The angle of a trailer with respect to a tow vehicle is an important parameter to the stability of the vehicle and trailer. A tow vehicle pulling a trailer in a straight line is generally more stable than when the vehicle is turning. While turning, the angle between the tow vehicle and the trailer is not a straight line but is another angle depending on how sharply the tow vehicle is turning. To safely operate a vehicle towing a trailer, for a given steering input and speed, there is a maximum angle between the tow vehicle and trailer whereby exceeding the angle causes instability and may cause the trailer or tow vehicle to roll over or jackknife. Accordingly, the angle between the trailer and tow vehicle must be determined to ensure the vehicle and trailer will continue to be in control.

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