Workshop diagnostic system

• US 9,905,058 B2
• Filed: 05/27/2014
• Issued: 02/27/2018
• Est. Priority Date: 06/27/2013
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Schneider, Klaus, Wagner, Mirko
• Primary Examiner(s): Mawari, Redhwan K
• Assistant Examiner(s): Torchinsky, Edward
• Application Number:
  US14/901,126
• Publication Number:
  US 20160148443A1
• Time in Patent Office: 1,372 Days
• Field of Search: None
• CPC Class Codes: G05B 23/0213 Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
• CPC Class Codes: G07C 2205/02 using a vehicle scan tool
• CPC Class Codes: G07C 5/008 communicating information to a remotely located station transmission systems for measured values G08C
• CPC Class Codes: G07C 5/0808 Diagnosing performance data testing of vehicles G01M17/00; testing of electrical installation on vehicles G01R31/005

Abstract

A method for supporting the troubleshooting on a technical object, in particular on a motor vehicle, includes receiving first diagnostic data from at least one object control device and transmitting the data to a diagnostic server; forming, from particular transmitted first diagnostic data, at least one set of first diagnostic data and assigning at least one first diagnostic result to the set of first diagnostic data; storing the first diagnostic data sets generated in the course of successive diagnoses in a first database; comparing the diagnostic data and/or the diagnostic result of each diagnostic data set of the first diagnostic data sets with the diagnostic data and/or the diagnostic result of predefined second diagnostic data sets, which are stored in a second database and each of which contains a set of second diagnostic data and a second diagnostic result assigned to the set of second diagnostic data.

Claims

1. A workshop diagnostic system for supporting a troubleshooting on a technical object, comprising:

at least one diagnostic tester receiving first diagnostic data, measured by at least one object control device;

at least one diagnostic server, wherein;

the diagnostic tester includes;

at least one object communication device for receiving the first diagnostic data from the at least one object control device of the technical object, and

at least one transmission unit for transmitting the first diagnostic data to the diagnostic server;

at least one of the diagnostic tester and the diagnostic server forms, from the first diagnostic data, at least one set of first diagnostic data that includes at least a portion of the first diagnostic data, and

at least one of the diagnostic tester and the diagnostic server assigns at least one first diagnostic result to the set of first diagnostic data;

a first database for storing first diagnostic data sets generated in the course of successive diagnoses, each of the first diagnostic data sets including a set of first diagnostic data and the at least one first diagnostic result assigned to the set of first diagnostic data;

a second database for storing predefined second diagnostic data sets, each of the second diagnostic data sets including a set of second diagnostic data and a second diagnostic result assigned to the set of second diagnostic data;

an evaluation system including an assignment unit for comparing at least one of diagnostic data and diagnostic result of one of the first diagnostic data sets with at least one of diagnostic data and diagnostic result of the second diagnostic data sets and assigning to the first diagnostic data set one of the predefined second diagnostic data sets having the greatest similarity to the first diagnostic data set according to the comparison;

a memory unit for storing the assignment carried out by the assignment unit;

a data set generating unit for modifying the assigned second diagnostic data set on the basis of all first diagnostic data sets, which are assigned to this second diagnostic data set, in order to generate at least one third diagnostic data set, each third diagnostic data set including a particular set of third diagnostic data and at least one third diagnostic result assigned to the set of third diagnostic data; and

storing the third diagnostic data set in a third database; and

a diagnostic unit for supporting the troubleshooting on the technical object on the basis of at least one third diagnostic data set.

2. The workshop diagnostic system as recited in claim 1, wherein the technical object includes a motor vehicle.

3. The workshop diagnostic system as recited in claim 1, wherein the first, second, and third diagnostic data each include at least one diagnostic variable and at least one value assigned to the diagnostic variable.

4. The workshop diagnostic system as recited in claim 3, wherein:

at least one of the assignment unit and the data set generating unit is designed in such a way that numerical differences between values of corresponding diagnostic data of the data sets to be processed are calculated and at least one of the assignment of a first diagnostic data set to a second diagnostic data set and the modification of a second diagnostic data set is carried out on the basis of the numerical differences, and

corresponding diagnostic data are diagnostic data which contain the same diagnostic variables.

5. The workshop diagnostic system as recited in claim 4, wherein at least one of the assignment unit and the data set generating unit calculates, in each case, a mean of the numerical differences as a comparative value.

6. The workshop diagnostic system as recited in claim 5, wherein the mean is a weighted mean.

7. The workshop diagnostic system as recited in claim 3, wherein at least one of the assignment unit and the data set generating unit calculates a numerical difference between the diagnostic results of the two data sets on the basis of a predefined metric that defines a numerical distance between two diagnostic results in each case.

8. The workshop diagnostic system as recited in claim 3, wherein the data set generating unit is designed to generate the third diagnostic data set on the basis of all the first data sets, which are assigned to the second diagnostic data set, and

a) on the basis of all the first data sets, which are assigned to the second diagnostic data set, ascertaining values for the individual diagnostic variables of the second diagnostic data set, in order to generate a first test data set;

b) by adding or removing diagnostic variables from the second diagnostic data set, generating one or multiple further test data sets and assigning values to the diagnostic variables of the further test data sets on the basis of all the first data sets, which are assigned to the second diagnostic data set; and

c) by utilizing methods of statistical model selection, selecting that test data set from the test data sets as the new third data set, which has the highest statistical significance relative to all the first data sets, which are assigned to the second diagnostic data set.

9. The workshop diagnostic system as recited in claim 3, wherein the data set generating unit at least one of:

generates the third diagnostic data set on the basis of the assigned second diagnostic data set,

modifies the second diagnostic data set as a function of a modification data set, which has been ascertained from all the first data sets assigned to the second diagnostic data set,

changes at least one value of at least one diagnostic variable in the second diagnostic data set, and

at least one of;

removes at least one diagnostic variable from the second diagnostic data set, and

adds at least one diagnostic variable to the second diagnostic data set.

10. The workshop diagnostic system as recited in claim 9, wherein the data set generating unit modifies the second diagnostic data set only when a probability that the differences between the ascertained modification data set and the second diagnostic data set have been come about randomly is not above a predefined threshold value.

11. The workshop diagnostic system as recited in claim 1, wherein one of a first, second, and third diagnostic result each includes at least one of at least one indication of a component detected as defective and a suggestion for further test steps to be carried out.

12. The workshop diagnostic system as recited in claim 1, wherein the first database receives first diagnostic data sets from a large number of different diagnostic testers.

13. A workshop diagnostic system for supporting a troubleshooting on a technical object, comprising:

at least one diagnostic tester receiving first diagnostic data, measured by at least on object control device;

at least one diagnostic server, wherein;

the diagnostic tester includes;

at least one object communication device for receiving the first diagnostic data from the at least one object control device of the technical object, and

at least one transmission unit for transmitting the first diagnostic data to the diagnostic server;

at least one of the diagnostic tester and the diagnostic server forms, from the first diagnostic data, at least one set of first diagnostic data that includes at least a portion of the first diagnostic data, and

at least one of the diagnostic tester and the diagnostic server assigns at least one first diagnostic result to the set of first diagnostic data;

a first database for storing first diagnostic data sets generated in the course of successive diagnoses, each of the first diagnostic data sets including a set of first diagnostic data and the at least one first diagnostic result assigned to the set of first diagnostic data;

a second database for storing predefined second diagnostic data sets, each of the second diagnostic data sets including a set of second diagnostic data and a second diagnostic result assigned to the set of second diagnostic data;

an evaluation system including an assignment unit for comparing at least one of diagnostic data and diagnostic result of one of the first diagnostic data sets with at least one of diagnostic data and diagnostic result of the second diagnostic data sets and assigning to the first diagnostic data set one of the predefined second diagnostic data sets having the greatest similarity to the first diagnostic data set according to the comparison;

a memory unit for storing the assignment carried out by the assignment unit;

a data set generating unit for modifying the assigned second diagnostic data set on the basis of all first diagnostic data sets, which are assigned to this second diagnostic data set, in order to generate at least one third diagnostic data set, each third diagnostic data set including a particular set of third diagnostic data and at least one third diagnostic result assigned to the set of third diagnostic data; and

storing the third diagnostic data set in a third database; and

a diagnostic unit for supporting the troubleshooting on the technical object on the basis of at least one third diagnostic data set,

wherein the first, second, and third diagnostic data each include at least one diagnostic variable and at least one value assigned to the diagnostic variable,

wherein the data set generating unit generates the third diagnostic data set on the basis of the assigned second diagnostic data set, modifies the second diagnostic data set as a function of a modification data set, which has been ascertained from all the first data sets assigned to the second diagnostic data set, at least one of changes at least one value of at least one diagnostic variable in the second diagnostic data set and removes at least one diagnostic variable from the second diagnostic data set, and adds at least one diagnostic variable to the second diagnostic data set, and

wherein a statistical significance for the ascertained modification data set is represented by a significance level α

of 0.05.

14. The workshop diagnostic system as recited in claim 13, wherein the methods of statistical model selection include at least one of the Kullback-Leibler divergence method, methods of logistic regression, and graphical models.

15. A method for supporting a troubleshooting on a technical object, comprising:

a diagnosing test receiving first diagnostic data, measured by at least one object control device and transmitting the data to a diagnostic server;

forming, from particular transmitted first diagnostic data, at least one set of first diagnostic data, which includes at least a portion of the first diagnostic data, and assigning at least one first diagnostic result to the set of first diagnostic data;

storing the first diagnostic data sets generated in the course of successive diagnoses in a first database, each of the first diagnostic data sets including a particular set of first diagnostic data and the at least one first diagnostic result assigned to the set of first diagnostic data;

comparing at least one of the diagnostic data and the diagnostic result of each diagnostic data set of the first diagnostic data sets with at least one of the diagnostic data and the diagnostic result of predefined second diagnostic data sets, which are stored in a second database and each of which contains a set of second diagnostic data and a second diagnostic result assigned to the set of second diagnostic data and assigning to the particular first diagnostic data set one of the predefined second diagnostic data sets having the greatest similarity to the particular first diagnostic data set according to the comparison;

storing the assignment carried out by the assignment unit;

modifying the particular assigned second diagnostic data set on the basis of all first diagnostic data sets which are assigned to this second diagnostic data set, in order to generate at least one third diagnostic data set, each third diagnostic data set containing a particular set of third diagnostic data and at least one third diagnostic result assigned to the set of third diagnostic data;

storing the third diagnostic data set in a third database; and

basing the support of the troubleshooting on the technical object on at least one third diagnostic data set.

16. The workshop diagnostic method as recited in claim 15, wherein the technical object includes a motor vehicle.