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Method and apparatus for short fault detection in a controller area network

A controller and local area technology, applied in the direction of measuring device, fault location, error detection/correction, etc., can solve problems such as inability to distinguish between transient faults and intermittent faults, and inability to identify and locate the root cause of faults

Active Publication Date: 2016-02-10
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This detection system generally cannot identify and locate the root cause of the fault, and cannot distinguish between transient faults and intermittent faults

Method used

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  • Method and apparatus for short fault detection in a controller area network
  • Method and apparatus for short fault detection in a controller area network
  • Method and apparatus for short fault detection in a controller area network

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Embodiment Construction

[0052] 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) 50 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 m...

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PUM

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Abstract

A controller area network (CAN) includes a CAN bus having a CAN-H wire, a CAN-L wire, and a pair of CAN bus terminators located at opposite ends of the CAN bus. The CAN further includes a plurality of nodes including controllers wherein at least one of the controllers is a monitoring controller. The monitoring controller includes a CAN monitoring routine for detecting a wire short fault in the CAN bus and its location.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Application No. 62 / 003,314, filed May 27, 2014, which is incorporated herein by reference. technical field [0003] The present invention relates to fault isolation for 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 operating states, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/02G01R31/08H04L69/40
CPCG06F11/0739G06F11/0751G06F11/2007G06F11/3013G06F11/3027G06F11/3062
Inventor X·杜S·蒋A·纳戈斯Y·张N·A·维恩科夫斯基
Owner GM GLOBAL TECH OPERATIONS LLC