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.

Inventor： Xiaoling HAN ,  Junjun XIN ,  Lei NIE ,  Yue PAN ,  Yu ZHANG ,  Jade E. DAY ,  Zehua HUANG ,  Esayas NAIZGHI ,  Pingyuan JI ,  Zhiqi GONG

IPC: H04L7/00 ,  G01C21/16 ,  G01C21/28 ,  G01S17/931 ,  G01S19/01 ,  H04L67/12

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.

公开(公告)号：US20220182213A1

公开(公告)日：2022-06-09

申请号：US17186476

申请日：2021-02-26

Applicant: TUSIMPLE, INC. ,  BEIJING TUSEN ZHITU TECHNOLOGY CO., LTD.

Inventor： Xiaoling HAN ,  Junjun XIN ,  Lei NIE ,  Yue PAN ,  Yu ZHANG ,  Jade E. DAY ,  Zehua HUANG ,  Esayas NAIZGHI ,  Pingyuan JI ,  Zhiqi GONG

IPC: H04L7/00 ,  H04L29/08 ,  G01C21/28 ,  G01S17/931 ,  G01C21/16 ,  G01S19/01

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.