ES2311381B1 - TROUBLE DIAGNOSIS SYSTEM FOR AUTOMOBILE VEHICLES BY COMPARISON OF FAILURE FONOTECA. - Google Patents

Abstract

Fault diagnosis system for vehicles cars by comparison to a failure library.

The object of the present invention is a system of fault diagnosis for motor vehicles by Failure library comparison.

This invention comprises a collection device of sounds (1), capable of capturing the sound of a fault, a base of sound data fault patterns or sound library (2) and a program comparison (3) of the fault sound with the standard sounds of breakdowns

The application of the invention is the diagnosis of breakdowns, providing a complement to it being able, of this mode, decrease repair time.

The application sectors are the sector of repair of motor vehicles, as well as the diagnosis in any other mechanical system, combined or not, with systems electrical, electronic, hydraulic and / or pneumatic.

Description

Fault diagnosis system for vehicles cars by comparison to a failure library.

The present invention falls within the sector fault diagnosis technician for system repair or mechanical equipment combined or not, with electrical systems, electronic, pneumatic and hydraulic. Among them is the sector of diagnosis of breakdowns of motor vehicles.

For troubleshooting it is necessary know how to recognize by some symptoms which is the organ or organs guilty of the anomaly presented. Among the different types of symptoms that may occur are a wide variety of noises

In a breakdown the most frequent is that the organ affected first give some symptoms. Often and during a period of more or less long time, the affected element begins to produce or, an intermittent sound that is becoming more persistent and notable, or the alteration of some organ associated with it (losses of water, lack of power, increased consumption ...).

For a fast and efficient fault diagnosis it is necessary for the person who performs this work a great knowledge of mechanics, hydraulics, pneumatics, electricity and electronics as well as a remarkable experience in these teams or systems, more specifically for the automotive sector, the knowledge of each of the vehicle models.

State of the art indication

Currently in the automotive sector, it they use electronic fault diagnosis systems that monitor, on the one hand, the connection paths, the actuators and system sensors, and on the other, the functions of the electronic control unit by means of a self-diagnosis.

In patent documents ES 2005908, ES 1008777, ES 2170010, PA04009749 diagnostic systems are described of breakdowns for motor vehicles.

Explanation of the invention.

The object of the present invention is that of complement the current diagnostic systems of car breakdowns or other systems mentioned above by comparing the signal of the sound produced by the breakdown with a previously developed breakdown library for Identification of the same with the fault patterns sounds. This  would allow, for certain cases, reduce the time of diagnosis for any type of person who performs it, regardless of your knowledge and experience. With him I would get a more complete fault diagnosis system since, on the one hand diagnose the electronic system with the current diagnosis systems and on the other hand it would be diagnosed by comparison of the sound signal mechanical systems combined or not, with other types of systems mentioned above.

On the other hand the current diagnostic systems of failures by means of computer allow to introduce very easily using a sound capture program from the fault so that it can be compared to a sound database of breakdowns that form the fault library.

The system also has the possibility of learn with the user as it allows the option to record those breakdown sounds that do not get a proper match with the sounds of your music library, to increase the "memory" of your diagnosis system, which, the more breakdowns are recorded, the more breakdowns will be diagnosed.

Brief explanation of the drawings

This invention comprises, according to Figure 1, a sound pickup equipment (1) capable of capturing the sound of the failure to diagnose and convert it into digital form to, through a program for comparing sound records (3), compare it with a database of standard sounds of breakdowns (2) called a previously developed sound library for the system, so that when there is a high percentage of coincidence between the two can be concluded that the fault that is try to diagnose is the fault that the database has associated with the matching sound.

Detailed exposition of an embodiment of the invention

To carry out this system, in the sector of the automotive industry, it would be necessary to create a library first of failures that could allow their comparison in Different types and models of cars. It would be advisable to study of the different faults starting with those according to the Pareto diagram are the most frequent but simplest, since these will allow with the same cost in the realization of the Fonoteca cover greater number of breakdowns and, therefore, reduce Personnel costs in their diagnosis.

The sound library can be done through the fault simulation, if possible, or by recording a damaged vehicle directly, depending on the means available for project development.

Comparing the sound obtained from the fault to diagnose with the fault database, the program IT will indicate the degree of similarity, and with it the probability of success in the diagnosis.

Industrial application

This invention would have application in the sector automotive industry, among others, as it could be used in the detection of breakdowns of motor vehicles.

Claims (2)

1. Fault diagnosis system for motor vehicles, among others, which is characterized by the diagnosis of faults in systems or mechanical equipment combined or not, with electrical, electronic, pneumatic, hydraulic systems, by comparing the sound produced by the fault , with a database of sound patterns of failures or avenue library previously developed and / or obtained from the recording of the failures that are made through its use. 2. Fault diagnosis system for motor vehicles among others, according to the first claim characterized by being provided with a group of sound sensors conveniently located in the car, capable of recording and transmitting the sound of the fault when required by any of the electronic systems of the vehicle.