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Method and diagnostic system for assisting guided fault finding in technical systems

一种技术系统、故障查找的技术，应用在辅助在技术系统领域，能够解决故障查找树高时间耗费等问题

Active Publication Date: 2017-02-15
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The establishment of the fault-finding tree is usually carried out manually on the basis of the expertise of experts and requires a high expenditure of time

Method used

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  • Method and diagnostic system for assisting guided fault finding in technical systems
  • Method and diagnostic system for assisting guided fault finding in technical systems
  • Method and diagnostic system for assisting guided fault finding in technical systems

Examples

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Embodiment Construction

[0026] figure 1 A schematic diagram of a correlation diagram 10 is shown. Dependency diagram 10 shows in a schematic diagram the correlations between tests, characteristics of tests and characteristic manifestations, components and their component failures, and symptoms. exist figure 1 The number of units shown in is each only exemplary and other numbers of associations and frequencies of occurrence are also possible for each unit.

[0027]Shown are trials 11a and 11b, which have features 12a and 12b or 12c. Experiments in the sense of the present invention are all tests, measurements or other observational interventions into a technical system which provide information about the characteristics of the technical system as observed, tested past and / or measured data. A specific example for a test is eg an exhaust gas test on a vehicle. In the sense of the present invention, features are all information entities, whose observation, measurement or testing lead to different fe...

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Abstract

The invention relates to a method for assisting guided fault finding in a technical system, having the following steps: detection of an observation group on the technical system; based on the observation group, possible damaged component groups of the technical system and possible implementations of the technical system are known set of tests; knowing the set of possible component failures, which is consistent with the set of observations; based on the set of possible component failures, for each possible combination of characteristic representations for each test in the set of tests that may be carried out for the technical system, Know the absolute reduction in the number of elements of the potentially damaged component groups of the technical system; based on the known absolute reduction for each test, by determining the average to be expected absolute reduction in the number of components of the technical system The first priority of the test group to be carried out; for each possible combination of characteristic manifestations of each test in the possible test group of the technical system to be carried out, the absolute reduction in the number of elements of the possible component failure group of the technical system is known ; based on the known absolute reduction for each test, calculate the second priority of the test groups that may be carried out by determining the average expected absolute reduction in the number of elements of the possible component failure groups of the technical system; and based on the first Priority and Secondary Priority to establish a prioritized list of possible trials to be conducted.

Description

technical field [0001] The invention relates to a method and a diagnostic system for assisting guided fault finding in a technical system, in particular a motor vehicle. Background technique [0002] In technical systems with a large number of components, failure conditions or incapacity of the system often require a series of step-by-step trials, tests and / or measurements to be taken with reference to the known symptoms and / or or response to identify a faulty component or minimum replaceable unit. Due to the complexity of such systems, it is often traced back to guided fault-finding, that is to say, individual trials and test sequences preset for specific problems in order to be able to quickly and reliably detect faults with little trial effort. And faults are identified on a one-to-one basis. [0003] Publication DE 103 07 365 B4 discloses, for example, a diagnostic device for a vehicle, in which state data of the vehicle are associated in a computing device with a faul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
CPCG06Q10/06315G01M17/00G01M99/00
Inventor C.伊拉特M.瓦纳A.巴斯M.弗里茨
Owner ROBERT BOSCH GMBH
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