Method for diagnosing error of vehicle electronic component

• US 20090153315A1
• Filed: 11/20/2008
• Published: 06/18/2009
• Est. Priority Date: 12/18/2007
• Status: Abandoned Application

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: Jang, Sung Hwan, Kim, Joon Sang, Han, Jin Gon, Choi, Myung Sung
• Application Number:
  US12/274,945
• Publication Number:
  US 20090153315A1
• Time in Patent Office: Days
• US Class Current: 340/439
• CPC Class Codes: G01R 31/007 using microprocessors or computers

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.

Claims

1. A method for diagnosing an error of a vehicle electronic component with a plurality of input/output ports comprising:

(a) a process sharing unusual waveform data that cause an erroneous operation of a problematic component through a communication network, wherein the unusual waveform data are obtained through at least one of;

(a-1) a process simultaneously collecting input and output waveforms of the problematic component in operation in real time in a state where the problematic component is electrically connected to a vehicle;

(a-2) a process analyzing the output waveforms to obtain information on a point in time of generation of an unusual output waveform that causes the erroneous operation of the problematic component; and

(a-3) 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; and

(b) a process obtaining the unusual waveform data and reproducing the unusual waveform data into original input waveforms to input the original input waveforms to input ports of a test component, thereby testing an erroneous operation or not of the test component.

2. The method of claim 1, wherein in the (a-1) process, the input and output waveforms are collected through attenuation probes connected to input/output lines electrically connecting the vehicle and the problematic component;

and

in the (b) process, the unusual waveform data are reproduced through a waveform generator and then amplified to be input to the input ports.

3. The method of claim 1, wherein in the (a-1) process, the input and output waveforms are collected from all input/output lines electrically connecting input/output ports of the problematic component and the vehicle.

4. The method of claim 1, wherein in the (a-1) process, the input and output waveforms are collected through a waveform collector 31 constituted to sample waveforms in real time through multiple channels and attach time and channel information to the sampled waveforms to periodically store them.

5. The method of claim 4, wherein in the (b) process, the unusual waveform data are reproduced into the original waveform data through a waveform generator with multiple channels.

6. The method of claim 1, wherein in the (a-1) process, the input and output waveforms are obtained in a state where the vehicle is being driven.

7. A method for diagnosing an error of a vehicle electronic component with a plurality of input/output ports comprising:

(a) 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;

(b) 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;

(c) 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; and

(d) a process correspondingly applying the input waveforms extracted in the (c) process to each of input ports of the problematic component, but also extracting an unusual input waveform that generates the unusual output waveform while sequentially releasing the application of the input waveforms one by one.

8. The method of claim 7, wherein in the (a) process, the input and output waveforms are collected through attenuation probes connected to input/output lines electrically connecting the vehicle and the problematic component.

9. The method of claim 7, wherein in the (a) process, the input and output waveforms are collected from all input/output lines connecting input/output ports of the problematic component and the vehicle.

10. The method of claim 7, wherein in the (a) process, the input and output waveforms are collected through a waveform collector 31 constituted to sample waveforms in real time through multiple channels and attach time and channel information to the sampled waveforms to periodically store them.

11. The method of claim 7, wherein in the (a) process, the input and output waveforms are obtained in a state where the vehicle is being driven.

12. A method for diagnosing an error of a vehicle electronic component with a plurality of input/output ports comprising:

(a) a process sharing unusual waveform data that cause an erroneous operation of a problematic component through a communication network, wherein the unusual waveform data are obtained at least through;

(a-1) a process simultaneously collecting input and output waveforms of the problematic component in operation in real time in a state where the problematic component is electrically connected to a vehicle;

(a-2) a process analyzing the output waveforms to obtain information on a point in time of generation of an unusual output waveform that causes the erroneous operation of the problematic component;

(a-3) 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; and

(a-4) a process correspondingly applying the input waveforms extracted in the (a-3) process to each of input ports of the problematic component, but also extracting an unusual input waveform that generates the unusual output waveform while sequentially releasing the application of the input waveforms one by one; and

(b) a process obtaining the unusual waveform data and reproducing the unusual waveform data into original input waveforms to input the original input waveforms to corresponding input ports of a test component in operation, thereby testing an erroneous operation or not of the test component.

13. The method of claim 12, wherein in the (a-1) process, the input and output waveforms are collected through attenuation probes connected to input/output lines electrically connecting the vehicle and the problematic component;

and

in the (b) process, the unusual waveform data are reproduced through a waveform generator and then amplified to be input to the input ports.

14. The method of claim 12, wherein in the (a-1) process, the input and output waveforms are collected from all input/output lines electrically connecting input/output ports of the problematic component and the vehicle.

15. The method of claim 12, wherein in the (a-1) process, the input and output waveforms are collected through a waveform collector 31 constituted to sample waveforms in real time through multiple channels and attach time and channel information to the sampled waveforms to periodically store them.

16. A method for diagnosing an error of a vehicle electronic component with a plurality of input/output ports comprising:

(a) sharing unusual waveform data that cause an erroneous operation of a problematic component through a communication network; and

(b) obtaining the unusual waveform data and reproducing the unusual waveform data into original input waveforms to input the original input waveforms to input ports of a test component, thereby testing an erroneous operation or not of the test component.

17. The method for diagnosing an error of a vehicle electronic component with a plurality of input/output ports of claim 16, wherein the unusual waveform data are obtained through one or more of:

(a-1) simultaneously collecting input and output waveforms of the problematic component in operation in real time in a state where the problematic component is electrically connected to a vehicle;

(a-2) analyzing the output waveforms to obtain information on a point in time of generation of an unusual output waveform that causes the erroneous operation of the problematic component; and

(a-3) 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.

18. A method for diagnosing an error of a vehicle electronic component with a plurality of input/output ports comprising:

(a) 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;

(b) 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;

(c) 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; and

(d) applying the input waveforms extracted in the step (c) to each of input ports of the problematic component.

19. The method for diagnosing an error of a vehicle electronic component of claim 18, wherein step (d) further comprises extracting an unusual input waveform that generates the unusual output waveform while sequentially releasing the application of the input waveforms one by one.

20. A method for diagnosing an error of a vehicle electronic component with a plurality of input/output ports comprising:

(a) sharing unusual waveform data that cause an erroneous operation of a problematic component through a communication network; and

(b) obtaining the unusual waveform data and reproducing the unusual waveform data into original input waveforms to input the original input waveforms to corresponding input ports of a test component in operation, thereby testing an erroneous operation or not of the test component.

21. The method for diagnosing an error of a vehicle electronic component of claim 20, wherein the unusual waveform data are obtained at least through:

(a-1) simultaneously collecting input and output waveforms of the problematic component in operation in real time in a state where the problematic component is electrically connected to a vehicle;

(a-2) analyzing the output waveforms to obtain information on a point in time of generation of an unusual output waveform that causes the erroneous operation of the problematic component;

(a-3) 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; and

(a-4) correspondingly applying the input waveforms extracted in the (a-3) to each of input ports of the problematic component, and extracting an unusual input waveform that generates the unusual output waveform while sequentially releasing the application of the input waveforms one by one.