Unlock instant, AI-driven research and patent intelligence for your innovation.

Time synchronization method, device, system, terminal equipment, and storage medium

A device and clock technology, applied in the fields of devices, systems and terminal equipment, time synchronization methods, and computer-readable storage media, can solve the problems of poor applicability of clock synchronization methods, and achieve high applicability, wide application range, and high precision Effect

Active Publication Date: 2021-01-26
江西猛犸电动科技有限公司
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, embodiments of the present application provide a time synchronization method, device, system, terminal equipment, and computer-readable storage medium to solve the problem of poor applicability of existing clock synchronization methods

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Time synchronization method, device, system, terminal equipment, and storage medium
  • Time synchronization method, device, system, terminal equipment, and storage medium
  • Time synchronization method, device, system, terminal equipment, and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] See figure 1 , is a structural schematic block diagram of a time synchronization system provided by the embodiment of the present application, the system includes a vehicle gateway device 11, at least one ECU 12 communicatively connected to the vehicle gateway device, and a superior clock source 13 communicatively connected to the vehicle gateway device; the vehicle The gateway device includes a hardware clock source, which periodically synchronizes with the upper-level clock source.

[0070] Among them, the ECU is used to send the time synchronization request message to the vehicle gateway device, and record the first sending time of the time synchronization request message; the vehicle gateway device is used to receive the time synchronization request message, and return the generated time synchronization response to the ECU message; wherein, the time response message includes the receiving time information of the time request message and the sending time information ...

Embodiment 2

[0076] After introducing the architecture of the time synchronization system, this embodiment will introduce the specific process of the time synchronization method from the ECU side.

[0077] See figure 2 , which is a schematic flow diagram of a time synchronization method provided in the embodiment of the present application, the method may include the following steps:

[0078] Step S201, the ECU sends a time synchronization request message to the vehicle gateway device, and records the first sending time of the time synchronization request message. Wherein, the vehicle gateway device is respectively connected to at least one ECU in communication, and the vehicle gateway device is connected to the upper-level clock source in communication; the vehicle gateway device includes a hardware clock source, and periodically synchronizes with the upper-level clock source.

[0079] It should be noted that the above-mentioned first sending time refers to the time when the time synchr...

Embodiment 3

[0124] See Figure 6 , which is a schematic block diagram of the structure of a time synchronization device provided in the embodiment of the present application, the device may include:

[0125] The time synchronization request message sending module 61 is used to send the time synchronization request message to the vehicle gateway device, and record the first sending time of the time synchronization request message;

[0126] The time synchronization response message receiving module 62 is used for receiving the time synchronization request message when the vehicle gateway device receives the time synchronization response message and returns the generated time synchronization response message to the ECU, then receives the time synchronization response message, and records the time synchronization response message. First arrival time; wherein, the time synchronization response message includes the receiving time information of the time synchronization request message and the s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The embodiments of the present application are applicable to the technical field of clocks, and disclose a time synchronization method, device, system, terminal equipment, and computer-readable storage medium. The method includes: the ECU sends a time synchronization request message to the vehicle gateway device, and records the first sending time of the time synchronization request message; the vehicle gateway device receives the time synchronization request message, and returns the generated time synchronization response message to the ECU Afterwards, the ECU receives the time synchronization response message and records the first arrival time of the time synchronization response message; the ECU calculates the distance between the ECU and the vehicle gateway device based on the first sending time, first arrival time, receiving time information, and sending time information. The time deviation between them, and adjust the local clock; the vehicle gateway device is respectively connected with at least one ECU in communication, and the vehicle gateway device includes a hardware clock source, and periodically synchronizes with the superior clock source. The hybrid clock synchronization mechanism provided in the embodiment of the present application can improve the applicability of the clock synchronization mechanism.

Description

technical field [0001] The present application belongs to the technical field of clocks, and in particular relates to a time synchronization method, device, system, terminal equipment, and computer-readable storage medium. Background technique [0002] With the continuous development of technology, the requirements for the accuracy of the clock in the motion control of the vehicle are getting higher and higher. [0003] At present, vehicles such as automobiles and electric motorcycles generally include one or more electronic control units (Electronic Control Unit, ECU), which can also be called "driving computer" or "vehicle computer". bus connection. According to the clock synchronization mechanism, clock synchronization implementation methods generally include hardware clock synchronization and software clock synchronization. Whether it is a hardware clock or a software clock, it is driven by a crystal oscillator, which is converted into time by accumulating the number o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/06H04L7/00
CPCH04J3/0635H04J3/0638H04L7/0016
Inventor 吴岱伟
Owner 江西猛犸电动科技有限公司