EP1071937B1 - System and method for configuring and/or parameterising a diagnostic device - Google Patents

Description

The invention relates to a system for configuration and / or Parameterization of a diagnostic device for a to be tested technical object.

The invention further relates to a method of configuration and / or parameterization of a diagnostic device for one testing technical object.

Such a system or method, for example in the field of signal acquisition and signal evaluation needed. This is often a mixture of measuring hardware and signal processing software to combine with each other, due to the complexity of the relationships for such a measurement setup often the knowledge and experience required by specialists. An example for a technical object is, for example, an electric motor, by means of the diagnostic device, for example by An acoustic check for bearing damage can be checked should.

From US 5,327,553 is a fault-tolerant computer system known. This has a pseudo file system to organize existing hardware components. The file system has via a directory in which for each component a file is available. Each of these files will either branch to a hardware component or a software module.

From US 5,481,481 is an automated diagnostic system known, the temporary wireless sensors are assigned. there Become a knowledge-based controller and a variety used by data collection devices. At least one it is wirelessly executed to data of real-time behavior of the system under test. The created Control the diagnostic system automatically a plan for the Instrumentation required for data collection. Farther Quality factors are derived from the collected data. One Comparison of derived with known, on optimal or faulty system states related quality factors makes possible Problems of the system to be tested recognizable.

From WO 98/01728 is a device for detecting analog Measuring signals for the acoustic diagnosis of test specimens known. It can with the help of vibration sensors of a test object analog measurement signals are recorded. One Computer comes with a standard interface card equipped, which serves to digitize the measuring signals. A switching signal is used to generate a trigger signal, which can be entered via a preferred serial interface is. A control program in the computer switched over the trigger signal the input of measuring signals on and off.

The invention is based on the object, a system and a Method for configuration and / or parameterization of a diagnostic device for objects that are uniform and easy to operate.

This task is performed by a system for configuration and parameterization a diagnostic device for objects to be tested solved, with a first data object, which is a collection of technological test object parameters of the object and its components, a second data object, which is a collection of technological parameters of Contains hardware components, which in the design of the Diagnostic device can be used, a first Program object, which records for assignment at least of test object parameters and technological parameters of Contains hardware components, and a second program object for processing the ones assigned in the first program object Records.

This task is performed by a configuration procedure and / or parameterization of a diagnostic device for to be tested Objects solved, in which in a first data object a Collection of technological test object parameters of the object and whose components are created, in a second Data object a collection of technological parameters of Contains hardware components, which in the design of the Diagnostic device is created in a first program object Data records for the assignment of at least test object parameters and technological parameters of hardware components is determined and in a second program object that in the first program object associated with data sets for the configuration and / or parameterization of the diagnostic device further processed become.

The invention is based on the finding that this is for a Configuration and / or parameterization of a diagnostic device required knowledge and know-how with the goal systematically can be detected and stored that the configuration and Parameterization largely automatic or at least computer-aided can be done. This results on the one hand additional security in the configuration and / or Parameterization of the diagnostic device and on the other can Largely on specially trained forces in the configuration and parameterization are omitted, as this is the case required knowledge already exists in the system itself. This knowledge exists on the one hand in the test object parameters of the first data object. These test object parameters include technological parameters of the object to be tested, for example in the case of a motor to be tested, information on the number the storage. On the other hand, this knowledge consists of the collection the technological parameters of the diagnostic device required hardware components, such as sensors for an acoustic test of the engine to be tested. The system includes in the form of the first program object further one Linkage, i. an assignment of the test object parameters of the object to be tested, i. of the engine to the technological Parameters of the hardware components, i. in the example of the Sensor. For example, in the first program object, at which point of the engine the sensor is arranged shall be. The second program object is for processing the data records contained in the first program object and signaled in the case described, for example, which sensitivity is set for the sensor and / or which additional hardware components for the diagnostic device, i.e. needed for the test setup. Total results Thus, one of the knowledge of the system largely automatic controlled virtual configuration and / or parameterization as an image of the real diagnostic facility including Test setup and evaluation, whereby the effort for such Creation is significantly reduced.

A uniform and integral system for configuration and / or parameterization can be achieved in that the in the design of the diagnostic device usable hard and / or Software objects simulated by software elements are.

As a particularly effective and interesting application has showed that the object to be examined a technical Object, in particular a motor, wherein the diagnostic device in particular for the assignment of vibroacoustic Measured values of the object for quality and error classes are used.

A unified user interface for all levels of the Method can be achieved in that the system Projection and a program part has, which as assistant, parameterizer and / or configurator for Processing from the configuration interface Requests serves and which based on a knowledge base to the configuration interface one of the respective request provides associated result.

An advantageous structure of the program part is in the way configures the program part to handle calls is provided in such a way that from the so-called knowledge base respectively required data in the form of rules and data be queried, with the knowledge base more data from object descriptions, the technological characteristics contain the individual objects of the diagnostic device.

Advantageous use cases of the system and the method consist in that the system and the method for automatic Configuration and parameterization of the diagnostic device, to select and carry out a test procedure and is provided for the evaluation of the test results.

A further advantageous realization of the system exists in that the system has another data object, which is a Collection of pattern waveforms, the pattern waveforms Assigned to quality and / or error classes are.

FIG 1

eine allgemeine Struktur der Grundelemente der Erfindung und den dazwischen vorliegenden Datenaustausch,

FIG 2

ein erstes Ausführungsbeispiel eines erfindungsgemäßen Systems zur Auswahl, Konfiguration und Parametrierung eines Prüfobjektes in schematischer Darstellung und

FIG 3

ein weiteres Ausführungsbeispiel eines Systems zur Konfiguration und Parametrierung des Prüfablaufes.

In the following the invention with reference to the figures illustrated embodiments will be described and explained in detail. Show it:

FIG. 1

a general structure of the basic elements of the invention and the intervening data exchange,

FIG. 2

a first embodiment of a system according to the invention for the selection, configuration and parameterization of a test object in a schematic representation and

FIG. 3

Another embodiment of a system for configuration and parameterization of the test procedure.

1 shows a general structure of the basic elements 8, 9 the invention and the intervening data exchange 14, 15 in the form of request 14 and result 15. The in FIG contained basic elements 8, 9 consist of a projecting surface 9 as well as from a program part 8, which in the following also as assistant, parameterizer or configurator referred to as. The configuration surface 9 is, for example using a personal computer with a screen, Keyboard and mouse realized.

Via the configuration interface 9, depending on the current The programming part 8 to be executed is to be executed which can be called with Assistant / Parameterizer / Configurator abbreviated as assistant 8 is called. The assistant 8 processes the calls, in which he is from a so-called Knowledge base the respective required data, e.g. in Form of rules and data, queries. As related to Figures 2 and 3, relates the knowledge base even more data from records, which as object descriptions should be designated and technological Characteristic values of the individual objects contained in the test system. As objects, the test object itself, hardware components, can be used the test section, used analysis method, etc. considered become.

• Auswahl der Hardwarekomponenten, welche für die Durchführung der aktuellen Prüfaufgabe benötigt wird und/oder geeignet ist,
• Konfiguration, d.h. Verschaltung der ausgewählten Hardwarekomponenten
• Parametrierung der ausgewählten Hardwarekomponenten, z.B. Setzen der Abtastraten von Messwertaufnehmern
• Konfiguration des Prüfablaufes, d.h. Verschaltung der beteiligten Softwarekomponenten, z.B. für die Messwertaufnahme, die Messwertfilterung, die Messwerttransformation, usw.,
• Auswahl eines Analyseverfahrens für die erfaßten Meßwerte, und dessen Parametrierung,
• Interpretation der Analyseergebnisse,
• Festlegung von Merkmalen, und
• Definition von Schwellen.

With the aid of the assistant 8, an automatic configuration and / or parameterization of a diagnostic device can be effected by means of the system shown in FIG. 1, for example in the following steps:

• Selection of the hardware components, which is needed and / or suitable for carrying out the current test task
• Configuration, ie interconnection of the selected hardware components
• Parameterization of the selected hardware components, eg setting the sampling rates of transducers
• Configuration of the test sequence, ie interconnection of the software components involved, eg for the measurement value recording, the measured value filtering, the measured value transformation, etc.,
• Selection of an analysis method for the acquired measured values, and their parameterization,
• Interpretation of the analysis results,
• Definition of characteristics, and
• Definition of thresholds.

The creation of an executable test program can by the configuration surface 9 or by the wizard 8 yourself.

Fig. 2 shows a system 8, 9 for automatic configuration and parameterization of a diagnostic device 4 for one testing object 3 (= test object) with subcomponents 3a..3n. The system 8 contains a first data object 1, which is a Test object description represents. The first data object 1 contains a collection of test object parameters PK1, PK2 ...

PKz, which technological parameters of the DUT 3 and its Components 3a..3n included. Next is a second data object 2 provided, which is the so-called hardware catalog represents. The second data object 2 contains a Collection of virtual hardware components HWType I, HWType II etc. As an image of real hardware components and their technological parameters, which in the design of a Test structure can be used. The system 8, 9 for Configuration of the diagnostic device 4 points beyond a first program object 5 (= knowledge base) on which records 7 for the assignment of the test object parameters PK1, PK2 ... PKz and the technological parameters HWType I, HWType II, ... of hardware components. Next is a second one Program object 6 (= interpreter) for processing in the first Program object 5 associated records 7 provided. The user interface is a configuration interface 9, calls 14 are made and results 15 are received become.

By projecting surface 9 is a user of the Systems 8.9 a call component available, with the help a diagnostic device 4, for example in the form of a Measuring or test setup can be configured. An entered Inquiry or call 14 branches to the program and data component 8 which in Fig. 1 also with assistant / Parametrier / configurator is designated. In this Wizard 8 is in turn a program component of the so-called Interpreter 6 containing the knowledge base 5 calls. Depending on the type of request 14 are those in the wizard 8 stored rules processed. To edit the Rules require different data, e.g. information about the current test object 3. Depending on the type and condition of the test object become suitable, for example Sensors selected. These data are provided by the wizard 8 from the corresponding object descriptions 1, 2, 5 read. The result of the processing of the rules may then be e.g. returned to the display surface 9 back to the display become.

All hardware and software objects of a complete test setup 4 are simulated by software elements. Through their software and data technology interconnection creates a so-called Flow control. At the beginning of a flow control is always on, the respective candidate 3 representing Software element. At this becomes a, a sensor representing Software element connected. That will turn on a software element representing signal conditioning connected, etc. At the end of the flow control is a software element representing an analysis method. This is finally followed by a software element, which represents a so-called classifier.

The Projektieroberfläche 9 passes the assistant 8, the flow control and the respective call type. The assistant 8 adds due to rules of knowledge base 5 and information, he partly from the existing elements of the flow control reads, the next links in the chain of Sequence control or parameterizes still "empty" elements the flow control. This modified flow control he returns to the Projektieroberfläche 9 back. This can be in next step, call the wizard 8 again until a complete test chain is configured.

The assistant 8 according to the invention consists essentially of two parts. The first part can be used as a knowledge base 1, 2, 5 and represents a memory area in the knowledge concerning the respective test setup, for example concerning a vibroacoustic test, in the form of so-called rules and facts is deposited. The second part 6 may also be referred to as an interpreter 6 and represents a program area that contains these rules and facts processed.

3 shows a further embodiment of a system for configuration and parameterization of the test procedure. there are essentially those already associated with the Fig. 1 and 2 used reference numerals. That is how it is the system of data objects 1, 2, 10, 11, 12. As already in the Explained in connection with FIG. 2, contains the first data object 1 a collection of test object parameters PK1, PK2 ... PKz, which technological parameters of the specimen and its Components included. Next is a second data object 2 provided, which represents the so-called hardware catalog. The second data object 2 contains a collection of Hardware components HWType I, HWType II etc. and their technological Parameters, which in the design of a test setup can be used. The system continues a third data object 10. The third data object 10 contains a collection of analysis methods, i. a collection of software components AV1, AV2 ... AVj, which for conversion and evaluation of the obtained measurement data used can be. As an example of software components of these For example, Fourier transforms, filters, statistical parameters, etc. are called. Next is one fourth data object 11 with a collection of records too Quality / error classes provided. The fourth data object 11 is used for automatic assignment of by conversion and evaluation of measured values by means of an analysis method obtained results on predefined quality / error classes QFK1, QFK2 ... QFKk. Hereby can to the quality Evaluation of a test object certain, especially characteristic pronounced measured values, in particular vibroacoustic Type, predetermined test object conditions, such as Well, Bearing damage, streak noise, etc., to be assigned. About that In addition, a fifth data object 12 is provided, which is a Collection of datasets containing sample waveforms. These stored pattern waveforms can be used in the evaluation Of test results usually a known condition be assigned to the test object. In the example of the figure 3 are thus selected pattern signal waveforms the corresponding Data records QFK1, QFK2, QFKk from the data object Assigned to "quality / error classes" QFK. Next is one third program object 13 is provided, which one or more Pattern signal curves MVT using an analysis method AV analyzed. The result AMVT of such an evaluation becomes the interpreter 7 contained in the assistant loaded. These results can be used in interpreter 7 be used in a current test object e.g. an automatic Assignment to a quality / error class. The system 8, 9 for the configuration of the diagnostic device 4 4 also has a first program object 5 (= knowledge base) on which records 7 for the assignment of the test object parameters PK1, PK2 ... PKz and the technological parameters HWType I, HWType II, ... of hardware components contains. Next is a second program object 6 (= interpreter) for processing the assigned in the first program object 5 Records 7 provided. As a user interface again serves a configuration interface 9, via the calls / requests 14, results 15 and inputs 16, 17, 18 can be done.

The inventive wizard 8 for projecting a Test program, which in particular acoustic diagnosis a test object is used, will be briefly described below become. This is called with the term assistant Computer-aided, operable technical input tool denotes, in particular one of several screen masks existing program. This can be stored on records with technical characteristics of test objects, and at least access a policy, i. on a so-called Knowledge Base 5. Such an assistant can also be considered a so-called "parameterizer" can be called.

The assistant according to the invention has the task of a so-called Electrode and a test program by evaluation of object descriptions automatically generate. A measuring chain is an interconnection of measuring elements, which for Detection of e.g. vibroacoustic measurements of a test object must be interconnected. A measuring chain contains at least the actual sensors, e.g. to record of structure-borne sound serve. But it can also be elements which are used for signal adaptation and signal acquisition serve. A test program contains algorithms for the digital Signal processing and measured value processing. Such algorithms are adapted to the respective test task. So be for example, in the acoustic diagnosis vibroacoustic Measured values recorded and with the help of frequency analysis algorithms evaluated.

The term "object descriptions" is a generic term for technical data labeling of individual elements. In principle, all in the system according to the invention occurring elements characterized by an "object description" become. Thus, e.g. the respective test object, e.g. an electric motor, which is necessary for data acquisition Hardware components and also for the parameterization of algorithms and program parts serving for processing measured values with the help of "object descriptions" in terms of data technology be clearly defined.

Thus, the object description may e.g. one serving as test object Electric motor as characteristics, e.g. the number of bearings, their structure, the number of rotor and stator slots and the Speed of the engine included. Furthermore, the object description e.g. a sensor coupled to the test object as characteristic values e.g. the input value range, the sensitivity and contain the weight. Finally, the object description e.g. one for the evaluation of the measured values and a Fourier transform based algorithm as characteristic values e.g. the window length, the type of weighting function and the degree of overlap.

The invention will be explained in more detail with reference to two examples become.

The first example concerns the selection and configuration of Sensors. Starting point for the configuration of a measuring setup according to the invention is the test object. For example for a test object is below an electric motor be considered, which has two bearings. The technical Characteristic values which describe the electric motor are in stored in a software element. This software item is in FIGS. 2 and 3 with the term "test object description" drawn. The configuration interface now transfers the Wizard this element with the call "Give sensors". Of the Assistant can now choose from the DUT element that it is an electric motor with two bearings (PK) and the following measuring points are configured: housing radial, bearing1 radial and Bearing 2 axially. Based on the description and deposited knowledge generates the parameter for sensor selection, reads appropriate Sensors from the hardware catalog (HWP), adds the software sensor elements in the flow control and fills them with the concrete sensor data. Then he directs the changed Sequence control returns to the configuration interface. These can now call the wizard again, but this time with the call "Give signal conditioning for sensors".

The second example concerns the selection and the configuration an analysis method and its parameters. Is a Quality error class QFK k configured, e.g. the quality error class "Streifgeräusch", so must now at least one suitable Analysis method are searched, whereby their detection and evaluation is possible. The configuration interface calls for this the wizard with the call "Give analysis method and their parameters "and the sequence control. The knowledge base activates a suitable one due to rules Analysis method AV j for the currently configured quality error class QFK k. By way of example, the quality error class "Cepstrum" to be activated. The parameters used for Calculating a cepstrum will be needed to generate the Knowledge base from the object descriptions in the software elements the flow control. These are here e.g. the speed PK z of the motor (read from the component "Test object description"), the sampling rate HWP j of the D / A converter (read from the component "HW structure") and the recording time HWP 1 (also read from the component "HW-Aufbau"). From this leads the one needed in the cepstrum calculation Parameters for the "overlap" from. Are analytical methods and whose parameters determine will be the necessary software elements generated, parameterized and inserted into the sequence control. These are returned to the configuration interface.

In summary, the invention thus relates to a system 8, 9 as well as a method for configuration and / or parameterization a diagnostic device 4 for objects to be tested 3. Das System consists of a first data object 1 with a collection of technological test object parameters PK1, PK2 ... PKz of the object to be tested 3 and its components 3a..3n, from a second data object 2 with a collection of technological parameters HWType I, HWType II, ... of Hardware components of the diagnostic device 4, from a first Program object 5 with records 7 for assignment at least of test object parameters PK1, PK2 ... PKz and technological Parameters HWType I, HWType II, ... of hardware components and a second program object 6 for processing the data records assigned in the first program object 5 7. created a knowledge base through the data and program objects, which adds up to a total knowledge of the system largely automatically controlled configuration and / or Parameterization of the diagnostic device including test setup and evaluation results and the cost of such Creation is significantly reduced.

Claims (14)

1. System (8) for configuring and/or parameterising a diagnostic device (4) for a technical test object (3), in particular a motor, whereby

   a) a first data object (1) containing a collection of technological test object parameters (PK1, PK2...PKz) of the object (3) and its components (3a..3n),

   b) a second data object (2) containing a collection of technological parameters (HWType I, HWType II, ...) of hardware components, that are utilized in the design of a diagnostic device (4),

   c) a first program object (5) containing data sets (7) assigning at least the technological test object parameters (PK1, PK2,...PKz) and the technological parameters (HWType I, HWType II) of the hardware components, and

   d) a second program object (6) for processing the data sets (7) assigned in the first program object (5).
2. System according to Claim 1
   characterised in that
   all hardware or software objects which can be used in configuring the diagnostic device (4) are reproduced using software elements (1, 2, 5, 7)
3. System according to Claims 1 or 2
   characterised in that
   the diagnostic device (4) serves to assign particularly vibro-acoustic measuring values of the test object (3) to quality and defect classes
4. System according to one of Claims 1 to 3
   characterised in that
   the system comprises a design interface (9) and a program section (8) serving as assistant, parameteriser and configurator for processing queries (14) resulting via the design interface (9),and wherein said program section supplies to the design interface (9) a result (15) assigned to a query (14) using the knowledge base.
5. System according to one of Claims 1 to 4
   characterised in that
   the program section (8) for processing call-ups (14) is provided such that data required in the form of rules and data is called-up from the so-called knowledge bases, whereby the knowledge base (5) relates to further data from the object descriptions containing technological variables from individual objects of the diagnostic device (4).
6. System according to one of Claims 1 to 5
   characterised in that
   the device (8) for automatically configuring and parameterising the diagnostic device (4) is provided for selecting and implementing a test method and for evaluating the test results.
7. System according to one of Claims 1 to 6
   characterised in that
   the device (8) comprises a further data object (12) containing a collection of sample signal traces (MVType 1, MVType 2), whereby the sample signal traces (MVType 1, MVType2) are assigned quality/error classes (QFK1, QFK2, ..., QFKk).
8. Method for configuring and/or parameterising a diagnostic device (4) for a technical test object (3), in particular a motor, whereby

   a) a collection of technological test object parameters (PK1, PK2...PKz) of the object (3) and its components (3a..3n) are developed in a first data object (1)

   b) a second data object (2) contains a collection of technological parameters (HWType I, HWType II, ..) of hardware components, which is developed during the configuration of the diagnostic device (4)

   c) data sets (7) for assigning at least test object parameters (PK1, PL2..PKz) and technological parameters (HWType I, HWTYpe II,...) of hardware components are determined in a first program object (5)

   d) in a second program object (6), the data sets (7) assigned in the first program object (5) are processed for configuring and/or parameterising the diagnostic device (4).
9. Method according to Claim 8
   characterised in that
   hardware and/or software objects which can be utilised are reproduced by software elements (1, 2, 5, 7) during configuration of the diagnostic device (4).
10. Method according to one of Claims 8 or 9
    characterised in that
    the diagnostic device (4) serves to assign particularly vibro-acoustic measurement values of the object (3) to quality and error classes.
11. Method according to one of Claims 8 to 10
    characterised in that
    the method serves as an assistant, parameteriser and/or configurator for processing queries (14) resulting over the design interface (9), which supplies one of the results (15) assigned to the respective query (14) to a design interfaces (9), based on a knowledge base (5).
12. Method according to one of Claims 8 to 11
    characterised in that
    data in the form of rules and data is called-up from the knowledge base (5), whereby the knowledge base (5) relates to further data from the object description containing technological variables of the individual objects of the diagnostic device (4).
13. Method according to one of Claims 8 to 12
    characterised in that
    the method for automatically configuring and parameterising the diagnostic device (4) is provided for selecting and implementing a test method and for evaluating the test results.
14. Method according to one of Claims 8 to 13
    characterised in that
    a further data object (12) which develops and evaluates a collection of sample signal traces (MVType 1, MVType 2,...), whereby quality classes/error classes (QFK1, QFK2,..., QFKk) are assigned to sample signal traces (MVType 1, MVTyp2, ...)

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