Method and apparatus for fault detection in a controller area network

A controller and fault technology, applied in bus network, data exchange network, error detection/correction, etc., can solve problems such as inability to distinguish transient faults from intermittent faults, and inability to identify the root cause of faults

Active Publication Date: 2015-03-25
GM GLOBAL TECH OPERATIONS LLC
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such detection systems generally cannot identify the root cause of the fault and cannot differentiate between transient and intermittent faults

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and apparatus for fault detection in a controller area network
  • Method and apparatus for fault detection in a controller area network
  • Method and apparatus for fault detection in a controller area network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0059] Referring now to the drawings, wherein the drawings are only for illustrating certain exemplary embodiments and not for limiting the invention, figure 1 A vehicle 8 is schematically shown comprising a controller area network (CAN) comprising a CAN bus 15 and a plurality of nodes, ie controllers 10 , 20 , 30 and 40 . The term "node" refers to any active electronic device that is signally connected to the CAN bus 15 and capable of sending, receiving or forwarding information over the CAN bus 15 . Each controller 10 , 20 , 30 and 40 is signally connected to the CAN bus 15 and electrically connected to the power grid 60 and the ground grid 70 . Each controller 10 , 20 , 30 , and 40 includes an electronic controller or other on-board device configured to monitor or control the operation of subsystems of the vehicle 8 and communicate via the CAN bus 15 . In one embodiment, one of the controllers, such as controller 40, is configured to monitor CAN 50 and CAN bus 15, and may ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a method and apparatus for fault detection in a controller area network. A controller area network (CAN) has a plurality of CAN elements including a communication bus and a plurality of controllers. A method for monitoring the CAN includes detecting occurrences of a first short-lived fault and a second short-lived fault within a predefined time window. A first fault set including at least one inactive controller associated with the first short-lived fault and a second fault set including at least one inactive controller associated with the second short-lived fault are identified. An intermittent fault is located in the CAN based upon the first and second fault sets.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 61 / 878,538, filed September 16, 2013, which is incorporated herein by reference. technical field [0003] The present invention relates to fault isolation associated with communications in a controller area network. Background technique [0004] The statements in this section merely provide background information related to the present invention. Accordingly, such citation is not intended to constitute an admission of prior art. [0005] A vehicle system includes a number of subsystems including, by way of example, the engine, transmission, seat / handling, brakes, HVAC, and occupant protection. Multiple controllers can be used to monitor and control the operation of the subsystems. The controller may be configured to communicate via a controller area network (CAN) to coordinate operation of the vehicle in response to operator commands, vehicle oper...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/26H04L12/40
CPCG06F11/0739G06F11/079H04L43/0823H04L12/40169H04L2012/40215G06F11/3006G06F11/30
Inventor S.蒋Y.张
Owner GM GLOBAL TECH OPERATIONS LLC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap