Parallel refreshing method based on vehicle-mounted Ethernet

A technology of Ethernet and frame refresh, applied in bus network, data exchange network, data exchange through path configuration, etc., can solve problems such as difficult to meet data volume, slow transmission rate, etc., achieve good experience, reduce update time, reduce The effect of refresh time

Active Publication Date: 2019-08-16
HOZON NEW ENERGY AUTOMOBILE CO LTD
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  • 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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  • Parallel refreshing method based on vehicle-mounted Ethernet
  • Parallel refreshing method based on vehicle-mounted Ethernet
  • Parallel refreshing method based on vehicle-mounted Ethernet

Examples

Experimental program
Comparison scheme
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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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Abstract

The invention relates to the field of automobile data updating, in particular to a parallel refreshing method based on a vehicle-mounted Ethernet, which comprises the following steps of S1, setting the parallel refreshing frames in a refreshing file, selecting a corresponding CAN channel by a CAN controller, and unpacking the refreshing file; S2, receiving the parallel CAN refresh package data uploaded by an Ethernet package tool; S3, unpacking the parallel CAN refresh package data, and sending the unpacked parallel CAN refresh package data to a corresponding CAN channel; S4, receiving a response message of the CAN controller; and S5, updating the corresponding ACK bit data, judging whether the ACK bit data in all the parallel refreshing frames are correctly updated or not, and if not, re-executing the step S1. Based on the communication rate of 100M or even 1000M of the Ethernet, the whole automobile is refreshed in parallel, so that the refreshing time is greatly shortened, the software updating time of the whole automobile is shortened, and the better experiences are brought to the users.

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 Applications(China)
IPC IPC(8): H04L29/08G06F8/65H04L12/40
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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