Method for diagnosing error of vehicle electronic component

Abstract

A method for diagnosing an error of a vehicle electronic component capable of being performed without an actual driving test by building up a database of unusual waveform data that generates an erroneous operation of a vehicle electronic component is disclosed. The unusual waveform data are obtained through a process simultaneously collecting input and output waveforms of a problematic component in operation in real time in a state where the problematic component is electrically connected to a vehicle; a process analyzing the output waveforms to obtain information on a point in time of generation of an unusual output waveform that causes an erroneous operation of the problematic component; and a process extracting input waveforms during a predetermined time before and after the point of time of generation of the unusual output waveform using the information on the point in time.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims under 35 U.S.C. §119(a) priority to Korean Application No. 10-2007-0133096, filed on Dec. 18, 2007 and Korean Application No. 10-2007-0133097, filed on Dec. 18, 2007, the disclosure of which is incorporated herein by reference in its entirety.BACKGROUND OF THE INVENTION[0002]This application claims priority to Korean Patent Application Nos. 2007-0133096 and 2007-0133097, filed on Dec. 18, 2007, respectively, in the Korean Intellectual Property Office, the entire contents of which are hereby incorporated by reference.[0003]1. Technical Field[0004]The present invention relates to a method for diagnosing an error in a vehicle electronic component, where the electronic component is capable of sampling an unusual waveform that causes an erroneous operation of the electronic component, and then sharing the sampled unusual waveforms on a network to improve performance of corresponding electronic components at home and abr...

AI Technical Summary

Benefits of technology

[0012]The present invention provides a method for diagnosing an error of a vehicle electronic component, the method being capable of easily finding causes o

Problems solved by technology

Furthermore, such a test should be repeated whenever the electronic component is upgraded, which results in a high cost and, further, is inefficient.

However, when an erroneous operation of an electronic component with a plurality of input/output ports such as an airbag control unit (ACU) is detected, it can be difficult to determine if the erroneous operation occurs due to any cause, for example, due to an error of a signal input to any port.

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