Tusimple, Inc.

Beijing Tusen Zhitu Technology Co., Ltd.

Junjun Xin

Xiaoling Han

Zehua Huang

Kun Zhang

Yu-Ju Hsu

Zhujia Shi

Mohamed Hassan Ahmed Hassan Wahba

Qiong Xu

Yicai Jiang

Yu Zhang

Pingyuan Ji

Lei Nie

Jade E Day

Yue Pan

Esayas Naizghi

Zhiqi Gong

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.

Hardware-based time synchronization for heterogeneous sensors in autonomous vehicles

Devices, systems, and methods for a vehicular safety system in autonomous vehicles are described. An example method for safely controlling a vehicle includes selecting, based on a first control command from a first vehicle control unit, an operating mode of the vehicle, and transmitting, based on the selecting, the operating mode to an autonomous driving system, wherein the first control command is generated based on input from a first plurality of sensors, and wherein the operating mode corresponds to one of (a) a default operating mode, (b) a minimal risk condition mode of a first type that configures the vehicle to pull over to a nearest pre-designated safety location, (c) a minimal risk condition mode of a second type that configures the vehicle to immediately stop in a current lane, or (d) a minimal risk condition mode of a third type that configures the vehicle to come to a gentle stop.

Vehicle safety system for autonomous vehicles

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Tucson, AZ, United States of America

Junjun Xin