Device and method for on-board diagnosis based on a model
First Claim
1. Device for on-board diagnosis of a vehicle system, comprising a plurality of functional components which components are networked to one another, of which at least two are control devices, anda computing means which can be connected to a plurality of functional components by way of a connecting means, for recording and evaluation of component data generated by the plurality of components,whereinthe computing means has a mathematical model with which functional relationships of the plurality of components, optionally including the connection means, can be computed so that component-wide faults and/or faults relating to the connection means can be determined in a targeted manner in the motor vehicle from the component data.
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Abstract
The aim of the invention is to improve the diagnosis of motor vehicle systems comprising a plurality of functional components in a network. To this end, the individual status data of the control units (11, 12, 13, 14) is monitored in a central diagnostic control unit (15) using a mathematical model. Each control unit can also be provided with a self-diagnosis optionally based on a model. By calculating error or causes of error using a model, the control units do not need to be provided with large databases for the diagnosis of error.
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Citations
13 Claims
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1. Device for on-board diagnosis of a vehicle system, comprising a plurality of functional components which components are networked to one another, of which at least two are control devices, and
a computing means which can be connected to a plurality of functional components by way of a connecting means, for recording and evaluation of component data generated by the plurality of components, wherein the computing means has a mathematical model with which functional relationships of the plurality of components, optionally including the connection means, can be computed so that component-wide faults and/or faults relating to the connection means can be determined in a targeted manner in the motor vehicle from the component data.
- 8. Process for on-board diagnosis of a vehicle system, said system comprising a plurality of functional components which are networked to one another, by recording and evaluating component data of the plurality of components, wherein for evaluation of the component data a mathematical model is used with which functional relationships of the plurality of components, optionally including the connection means, are computed for networking of components so that component-wide faults and/or faults relating to the connection means can be determined in a targeted manner in the motor vehicle from the component data.
Specification