A Parallel Refresh Method Based on Vehicle Ethernet

A technology of Ethernet and frame refresh, which is applied in the direction of bus network, data exchange network, data exchange through path configuration, etc. It can solve the problems of difficult to meet the data volume and slow transmission rate, and achieve the goal of reducing update time and refresh time Effect

Active Publication Date: 2022-04-19
HOZON NEW ENERGY AUTOMOBILE CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional technology based on CAN communication as the backbone, because the communication rate of CAN is generally 500kpbs, the transmission rate is slow, and it is difficult to meet the growing data volume

Method used

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  • A Parallel Refresh Method Based on Vehicle Ethernet
  • A Parallel Refresh Method Based on Vehicle Ethernet
  • A Parallel Refresh Method Based on Vehicle Ethernet

Examples

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Embodiment

[0048] Such as Figure 1-8 As shown, a parallel refreshing method based on vehicle Ethernet includes the following steps:

[0049] S1, setting the parallel refresh frame in the refresh file, the CAN controller selects the corresponding CAN channel and unpacks the refresh file.

[0050] Such as Figure 8 As shown, first connect the upper computer of the vehicle to the central gateway through Ethernet, set the parallel refresh frame in the refresh file on the central gateway, that is, select the controller program file that needs to be refreshed in parallel, and select the corresponding four controllers Program files, in this embodiment, are preferably the four refresh files of ECU11, ECU21, ECU31, and ECU41, each of which corresponds to an ECU, which is a CAN controller. It is hereby explained that each CAN channel can be connected to multiple ECUs . The CAN refresh control program controls the corresponding CAN refresh process, and unpacks the refresh file.

[0051] Said s...

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PUM

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Abstract

The present invention relates to the field of automobile data update, in particular to a parallel refresh method based on vehicle Ethernet, S1, setting the parallel refresh frame in the refresh file, the CAN controller selects the corresponding CAN channel and unpacks the refresh file; S2 , receiving the parallel CAN refresh package data uploaded by the Ethernet package tool; S3, unpacking the parallel CAN refresh package data and sending it to the corresponding CAN channel; S4, receiving the response message from the CAN controller; S5, Updating the corresponding ACK bit data, judging whether the ACK bit data in all the parallel refresh frames have been correctly updated, if the judging result is no, re-executing the step S1. Based on the communication rate of the Ethernet up to 100M or even 1000M, the present invention realizes parallel refreshing of the entire automobile, greatly reduces the refreshing time, reduces the updating time of the entire vehicle software, and provides users with a better experience.

Description

technical field [0001] The invention relates to the field of vehicle data update, in particular to a parallel refresh method based on vehicle Ethernet. Background technique [0002] In recent years, automotive technology has developed rapidly. New technologies such as advanced driver assistance systems, unmanned driving systems, interconnected functions, and smart cockpits are integrated into cars. These new technologies have brought about a substantial increase in the amount of code, which is reflected in the file size generally reaching ten megabytes or even hundreds of megabytes. This brings challenges to the update of the vehicle system. The traditional technology based on CAN communication as the backbone, because the communication rate of CAN is generally 500kpbs, the transmission rate is slow, and it is difficult to meet the increasing amount of data. [0003] Because the Ethernet communication rate can reach 100M or even 1000M, and because the Ethernet communicati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L67/00G06F8/65H04L12/40
CPCH04L67/34G06F8/65H04L2012/40215H04L2012/40273
Inventor 乐兆山于波彭庆丰
Owner HOZON NEW ENERGY AUTOMOBILE CO LTD
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