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Time synchronization method and device and electronic equipment

A time synchronization device and time synchronization technology, applied in the field of digital information transmission, can solve the problems of poor stability and low time stamp accuracy, and achieve the effect of high stability and high accuracy

Active Publication Date: 2021-04-16
苏州挚途科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The vehicle driving system in the prior art has low accuracy and poor stability for various sensory information and the time stamp given by the data processing unit

Method used

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  • Time synchronization method and device and electronic equipment
  • Time synchronization method and device and electronic equipment
  • Time synchronization method and device and electronic equipment

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] An embodiment of the present invention provides a time synchronization method, which is applied to an automatic driving system of a vehicle. The automatic driving system includes an integrated navigation system, a time synchronization device, a domain controller, and at least one laser radar.

[0034] Based on the above description, see figure 1 A flow chart of a time synchronization method is shown, the time synchronization method includes the following steps:

[0035] Step S102, the integrated navigation system receives the satellite time signal.

[0036] The method provided in this embodiment is applied to an automatic driving system of a vehicle, and the automatic driving system can realize time synchronization according to the method provided in this embodiment. In order to restore the surrounding environmental information more realistically, it is necessary to fuse the environmental information collected at the same time, and to assign a time stamp based on a uni...

Embodiment 2

[0049] The embodiment of the present invention also provides another time synchronization method; this method is implemented on the basis of the method in the above-mentioned embodiment; this method focuses on describing the details of how the integrated navigation system sends the time stamp signal and the second pulse signal to the time synchronization device based on the satellite time signal Method to realize. Such as figure 2 A flow chart of another time synchronization method shown, the time synchronization method includes the following steps:

[0050] Step S202, the integrated navigation system receives the satellite time signal.

[0051] The purpose of the present invention is to provide a multi-lidar and domain controller time synchronization method and device for an automatic driving system. The present invention uses a certain automatic driving system as a platform to develop a time synchronization device so that multiple laser radars and domain controllers of the...

Embodiment 3

[0076] Corresponding to the above method embodiment, the embodiment of the present invention provides a time synchronization device, which is applied to the automatic driving system of the vehicle. The automatic driving system includes an integrated navigation system, a time synchronization device, a domain controller and at least one laser radar; Figure 8 A structural schematic diagram of a time synchronization device shown, the time synchronization device includes:

[0077] The signal receiving module 81 is used for the integrated navigation system to receive the satellite time signal;

[0078] The signal sending module 82 is used for the integrated navigation system to send the time stamp signal and the second pulse signal to the time synchronization device based on the satellite time signal;

[0079] The signal synchronization module 83 is used for the time synchronization device to send the time stamp signal and the second pulse signal to the laser radar and the domain c...

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Abstract

The invention provides a time synchronization method and device and electronic equipment. The method is applied to an automatic driving system of a vehicle, and the automatic driving system comprises an integrated navigation system, a time synchronization device, a domain controller and at least one laser radar. The method comprises the following steps: an integrated navigation system receives a satellite time signal; the integrated navigation system sends a timestamp signal and a second pulse signal to the time synchronization device based on the satellite time signal; the time synchronization device sends the timestamp signal and the second pulse signal to the laser radar and the domain controller at the same time; the lidar and domain controller determines a system time of the lidar and domain controller based on the timestamp signal and the second pulse signal. In the mode, each module in the automatic driving system of the vehicle can be endowed with a timestamp based on a unified time axis, and the method has high accuracy and high stability.

Description

technical field [0001] The invention relates to the technical field of digital information transmission, in particular to a time synchronization method, device and electronic equipment. Background technique [0002] In recent years, autonomous driving technology has become the most active topic in the world, and an important part of this technology is to obtain the surrounding environment information of the vehicle through various sensing technologies, and make corresponding driving decisions based on the fusion results of these sensing information to control the driving of the vehicle . Due to the differences in data preprocessing delay, data transmission delay, and data transmission path of various sensing technologies, the delays required for various environmental sensing information to reach the fusion module of the domain controller are inconsistent. In order to restore the surrounding environment information more realistically, it is necessary to fuse the environmenta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06G01S19/33G01S19/25G01S17/931G01S17/86
Inventor 刘堂俊蔡小梅孙琼琼
Owner 苏州挚途科技有限公司