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ECU refreshing method based on CAN bus

A CAN bus and thread technology, applied in the field of electronics, can solve the problems of consumption and shorten the transmission time of refresh files, so as to avoid the problem of frame loss, shorten the refresh time, and reduce the refresh frequency.

Inactive Publication Date: 2020-09-11
宝能(广州)汽车研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When refreshing the ECU according to this process, it is necessary to download the refresh file from the refresh tool to the ECU. If the CAN (Controller Area Network) bus is used for refresh, most of the refresh time of the ECU will be consumed in the transfer process of the refresh file. In order to shorten the The refresh time of the ECU needs to find a way to shorten the transmission time of the refresh file

Method used

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  • ECU refreshing method based on CAN bus
  • ECU refreshing method based on CAN bus
  • ECU refreshing method based on CAN bus

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Embodiment Construction

[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0040] The CAN bus-based ECU refresh method, vehicle, device and system of the embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0041] figure 1 It is a flow chart of a CAN bus-based ECU refresh method according to an embodiment of the present invention.

[0042] Such as figure 1 Shown, the ECU refreshing method based on CAN bus of the embodiment of the present invention, comprises the following steps:

[0043] S101. Detect the cache space and thread occupancy informa...

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Abstract

The invention discloses an ECU refreshing method based on a CAN bus. The refreshing method comprises the following steps: detecting cache space and thread occupation information of an ECU; updating transmission parameters representing the receiving capability of the ECU according to the detected cache space and the thread occupation information; and feeding back the transmission parameter to a refresh tool to update the refresh frequency. The embodiment of the invention discloses a refreshing method. In the process of refreshing the ECU, the transmission parameters representing the receiving capability of the ECU can be updated according to the cache space and the thread occupation information of the ECU, so that the time interval of sending the refreshing message to the ECU by the refreshing tool is updated, and the transmission parameters and the time interval of refreshing the message are matched with the receiving capability of the ECU.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a CAN bus-based ECU refreshing method, automobile, device and system. Background technique [0002] At present, most of the updating of electronic control unit ECU (Electronic Control Unit) is carried out based on the process defined in the ISO 14229 specification. When refreshing the ECU according to this process, it is necessary to download the refresh file from the refresh tool to the ECU. If the CAN (Controller Area Network) bus is used for refresh, most of the refresh time of the ECU will be consumed in the transfer process of the refresh file. In order to shorten the For the refresh time of the ECU, it is necessary to find a method that can shorten the transmission time of the refresh file. Contents of the invention [0003] The present invention aims to solve one of the technical problems in the above-mentioned technologies at least to a certain extent. [0004] Fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
CPCG05B23/0213G05B2219/24065
Inventor 何晔胡耀李敬华
Owner 宝能(广州)汽车研究院有限公司
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