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On-board OTA upgrading method based on CAN bus load monitoring

A CAN bus, load monitoring technology, applied in the bus network, digital transmission system, data exchange network and other directions, can solve the problems of excessive CAN bus load, occupation, security problems, etc.

Active Publication Date: 2018-07-13
XIAMEN YAXON NETWORKS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has powerful functions and can upgrade the system without loss. It mainly automatically downloads OTA upgrade packages and upgrades automatically through wireless networks (such as WIFI, 3G). Too large to affect driving and cause safety issues

Method used

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  • On-board OTA upgrading method based on CAN bus load monitoring
  • On-board OTA upgrading method based on CAN bus load monitoring
  • On-board OTA upgrading method based on CAN bus load monitoring

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Embodiment Construction

[0031] A kind of vehicle-mounted OTA upgrade method based on CAN bus load monitoring of the present invention comprises the following steps:

[0032] Step 1. Classify all the electronic control unit ECUs in the vehicle according to their functional safety types, and store them in the memory of the vehicle OTA terminal in the form of a data table; among them, the ECUs related to safe driving of the vehicle are classified as power ECUs, and other The ECU is classified as non-power ECU;

[0033] Step 2, the vehicle-mounted OTA terminal receives the upgrade file and upgrade type of the ECU, and searches the data table in the memory; if the upgrade type is a non-powered ECU and the size of the upgrade file is smaller than the first set value, go to step 4, otherwise, go to step 3;

[0034] Step 3, the vehicle-mounted OTA terminal judges whether the vehicle is in a parked state and whether the vehicle bus network is in a dormant state, if so, start the upgrade, otherwise, do not upg...

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Abstract

The invention discloses an on-board OTA upgrading method based on CAN bus load monitoring. The on-board OTA upgrading method comprises steps that all of internal electronic control units ECU are divided into different upgrading types according to function safety types, and are stored in a memory of an on-board OTA terminal in a form of data table; the on-board OTA terminal is used to receive the upgrading files and the upgrading types of the ECU, is used to search the data table in the memory, is used to select the upgrading types, and is used to determine whether the on-board OTA upgrading based on the CAN bus load monitoring is carried out or the upgrading is carried out during parking of a vehicle and in a dormant state of a vehicle bus network. The on-board OTA upgrading method based on the CAN bus load monitoring is advantageous in that by classifying the internal electronic units ECU, calculating a CAN bus network load rate, and determining an upgrading condition, an ECU upgrading process is simplified, internal bus network bandwidth is utilized in a maximized way, and loss of an on-board storage battery is reduced.

Description

technical field [0001] The invention relates to the technical field of vehicle-mounted OTA upgrades, in particular to a method for vehicle-mounted OTA upgrades based on CAN bus load monitoring. Background technique [0002] During the entire vehicle life cycle, the software upgrade of the on-board electronic control system may be repeated or even repeated. In addition to some upgrades to improve customer satisfaction (such as in-vehicle infotainment systems, etc.), more important safety upgrades may involve automotive The traditional solution of urgently notifying car owners to upgrade at dealerships often means inefficiency and high cost, and car companies may also bear the price of huge loss of brand value. The traditional online upgrade method is to use the fault code setting service Ox85 to prohibit the fault identification and storage function of the ECU on the network, and to use the communication control service Ox28 to prohibit the current network management and comm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/40G06F8/65H04L12/24H04L12/26H04L29/08
CPCG06F8/65H04L12/40H04L41/082H04L43/0876H04L67/06H04L2012/40215H04L2012/40273
Inventor 张航其温禧方耿舜曹洪霞陈德品高忠木
Owner XIAMEN YAXON NETWORKS CO LTD
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