CAN bus message abnormity early warning method and electronic equipment

A CAN bus, electronic equipment technology, applied in the field of controller area network network communication, can solve the problems of untimely early warning, inability to work, relying on the host computer, etc.

Pending Publication Date: 2020-07-28
昆易电子科技(上海)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In most cases, only after the CAN bus has a dominant fault, the user can recognize that the CAN bus message is abnormal, and there is a defect that the early war

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  • CAN bus message abnormity early warning method and electronic equipment
  • CAN bus message abnormity early warning method and electronic equipment
  • CAN bus message abnormity early warning method and electronic equipment

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Embodiment Construction

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some examples or embodiments of the present application, and those skilled in the art can also apply the present application to other similar scenarios. Unless otherwise apparent from context or otherwise indicated, like reference numerals in the figures represent like structures or operations.

[0026] As indicated in this application and claims, the terms "a", "an", "an" and / or "the" do not refer to the singular and may include the plural unless the context clearly indicates an exception. Generally speaking, the terms "comprising" and "comprising" only suggest the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list, and ...

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Abstract

The invention provides electronic equipment which is used for early warning of CAN bus message abnormity and comprises a CAN bus controller and a processor. The CAN bus controller is suitable for receiving s message transmitted on the CAN bus. The processor is coupled with the CAN bus controller and is configured to mark a timestamp for each message, calculate the message periods of the messages with the same identification codes, and compare the message period with a period threshold to determine whether the message period is abnormal or not.

Description

technical field [0001] The present invention mainly relates to the field of controller area network (CAN for short) network communication technology, and in particular to a method and electronic equipment for early warning of CAN bus message abnormality. Background technique [0002] During the verification process of periodic messages of the early CAN bus, manual monitoring of periodic messages was often used. The monitored periodic data included the longest cycle, the shortest cycle, and the average cycle, etc. Users used these data to troubleshoot CAN bus message abnormalities . In most cases, only after the CAN bus has a dominant fault, the user can recognize that the CAN bus message is abnormal, and there is a defect that the early warning is not timely. And this method of troubleshooting the abnormality of CAN bus messages is heavily dependent on the host computer and cannot work on an independent device. Contents of the invention [0003] The technical problem to ...

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Application Information

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IPC IPC(8): H04L12/40
CPCH04L12/40013H04L12/40032H04L12/40039H04L2012/40215
Inventor 丛亮亮
Owner 昆易电子科技(上海)有限公司
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