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Vehicle time synchronization method, device and system

A time synchronization system and time synchronization technology, applied in the field of communication, can solve the problems of reduced vehicle operation safety, slow time acquisition speed, untimely time synchronization, etc.

Pending Publication Date: 2021-06-04
NEOLIX TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practice, it is found that each timing subsystem in the vehicle needs to obtain PPS information and serial port time information, resulting in slow time acquisition speed and untimely time synchronization, which in turn leads to reduced vehicle operation safety

Method used

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  • Vehicle time synchronization method, device and system
  • Vehicle time synchronization method, device and system
  • Vehicle time synchronization method, device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Please see figure 1 , figure 1 A schematic flowchart of a vehicle time synchronization method is provided for the embodiment of the present application. The method is applied to the time synchronization scene of vehicles, and is specifically applied to the time synchronization scene of self-driving vehicles (such as unmanned vehicles, computer-driven cars, wheeled mobile robots, etc.). Wherein, the vehicle time synchronization method includes:

[0054] S101. Obtain the server time of the server and the positioning time of the satellite positioning module.

[0055] In the embodiment of the present application, the method is executed by the vehicle computing platform of the vehicle to be synchronized.

[0056] In the embodiment of the present application, the vehicles to be synchronized are specifically self-driving vehicles, unmanned vehicles, computer-driven vehicles, wheeled mobile robots, etc., which are not limited in the embodiments of the present application.

...

Embodiment 2

[0079] Please see figure 2 , figure 2 It is a schematic flowchart of a vehicle time synchronization method provided in the embodiment of the present application. Such as figure 2 As shown, wherein, the vehicle time synchronization method includes:

[0080] S201. Obtain the server time of the server through the Internet.

[0081] In the embodiment of the present application, the vehicle computing platform communicates with the server through the Internet, and can obtain the server time of the server through the Internet.

[0082] S202. Obtain the positioning time of the satellite positioning module through the universal serial bus.

[0083] In the embodiment of this application, the vehicle computing platform can communicate with the satellite positioning module through the serial data bus. The satellite positioning module first receives the positioning time sent by the satellite positioning system, and then the vehicle computing platform receives the positioning time fr...

Embodiment 3

[0119] Please see image 3 , image 3 It is a schematic structural diagram of a vehicle time synchronization device provided in the embodiment of the present application. Such as image 3 As shown, the vehicle time synchronization device is applied to the vehicle computing platform, including:

[0120] The obtaining unit 310 is configured to obtain the server time of the server and the positioning time of the satellite positioning module.

[0121] The first synchronization unit 320 is configured to perform time synchronization processing on the time of the vehicle computing platform according to the server time to obtain the system time, wherein the system time is synchronized with the server time.

[0122] The second synchronization unit 330 is configured to perform time synchronization processing on the time of the vehicle subsystem connected to the vehicle computing platform according to the system time to obtain the subsystem time, wherein the subsystem time is synchron...

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Abstract

The invention discloses a vehicle time synchronization method, device and system, and relates to the technical field of communication. The method comprises the steps: obtaining the time of a server and the positioning time of a satellite positioning module through a vehicle calculation platform of a to-be-synchronized vehicle when the time of the to-be-synchronized vehicle is synchronized; then the vehicle calculation platform performing time synchronization processing on the time of the vehicle calculation platform according to the server time to obtain system time; performing time synchronization processing on the time of a vehicle subsystem connected with the vehicle calculation platform according to the system time to obtain subsystem time; according to the positioning time, time synchronization processing is carried out on the system time and the subsystem time to obtain the synchronous system time and the synchronous subsystem time, time synchronization is carried out on to-be-synchronized vehicles (such as automatic driving vehicles, unmanned vehicles and the like) in time, the time synchronization speed is high, and safe operation of the vehicles is guaranteed.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular, to a vehicle time synchronization method, device and system. Background technique [0002] Unmanned vehicles can achieve automatic driving through the cooperation of multiple subsystems. The time of each subsystem is independent of each other. It is necessary to unify the time of each subsystem to ensure that there will be no confusion when the data is fused, thereby ensuring the safe operation of the vehicle. . The existing vehicle time synchronization method first receives the Global Navigation Satellite System (GNSS) signal as a clock synchronization source, then receives the PPS information and serial port time information to measure the transmission delay of the GPS time signal, and finally according to the transmission delay Timing and calibration of the local clock of the autonomous vehicle. However, in practice, it is found that each timing subsystem ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00H04J3/06
CPCH04W56/0015H04J3/0644
Inventor 曾文达
Owner NEOLIX TECH CO LTD
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