JP2002073157A - Fault diagnosing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fault diagnosing device capable of more exactly supporting a fault recovery without requiring special knowledge for a knowledge base or the like. SOLUTION: This device is provided with a storage means 3 for respectively storing the contents of the fault, the diagnosed result of the fault and the fault recovery and a display means for retrieving diagnostic information 33 in the past recorded in the storage means 3 when the fault occurs, extracting a fault record similar to the occurring fault and displaying it on a display device 4 together with guidance 32.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a failure diagnosis apparatus for diagnosing a failure in a target system.

[0002]

2. Description of the Related Art In general, a failure diagnosis apparatus has a detection function for detecting a failure of a target system and a diagnosis function for diagnosing the content of the failure by inferring the detected failure. A plurality of functions are provided, such as a guidance function for providing guidance on a measure for a diagnosed failure. When using such a fault diagnosis device,
The user has identified the cause of the failure by looking at the diagnosis result output by the failure diagnosis device, and then took action against the failure using the guidance function of the failure diagnosis device. In addition, in the conventional failure diagnosis device, the diagnosis function is executed based on a diagnosis rule represented by a knowledge base. Specialized techniques had to be reflected in the necessary diagnostic rules. Furthermore, when a user who has little knowledge of the failure of the target system uses the failure diagnosis device to specify the cause of the failure, it has generally been necessary to rely only on the diagnosis result output from the failure diagnosis device.

[0003]

For this reason, if there is a difference between the estimation of the cause based on the failure diagnosis and the true cause, it is conceivable to take measures to improve the diagnosis rule, but the user has It is extremely difficult to sufficiently reflect the know-how in the diagnosis rules, and furthermore, it has been a problem that the specialized rules are required for the creation of the diagnosis rules and users cannot easily handle them. . Accordingly, the present invention provides a failure diagnosis device that allows a user to easily refer to past diagnosis records registered in the failure diagnosis device and thereby more appropriately support a treatment for a failure. With the goal.

[0004]

SUMMARY OF THE INVENTION In order to solve the above problems, a failure diagnosis apparatus of the present invention provides a user with a function of monitoring a failure of a target system, a function of diagnosing the failure, and a process for the failure. A failure diagnosis device having a function, comprising: storage means for recording details of a failure, a failure diagnosis result, and processing for the failure; and past diagnosis information recorded in the storage means when the failure occurred. Display means for searching and extracting a failure record similar to the occurred failure and displaying the same on a display device together with guidance, and processing for a diagnosis result is inputted via the input means. And the contents of the processing are stored in the storage means. As a result, the user can easily refer to past diagnostic records, and can appropriately support a measure against a failure.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an example of an embodiment of a failure diagnosis device according to the present invention. In the figure, reference numeral 1 denotes a target system to be subjected to failure diagnosis, for example, a device such as a spinning system. Reference numeral 2 denotes a failure diagnosis device of the present invention, 4 denotes a display device, and 5 denotes an input device. The failure diagnosis device 2 includes an interface 21 for receiving signals of the target system 1 and a user interface 2 for interfacing the storage device 3, the display device 4, and the input device 5.
2, a detection unit 23 for detecting a failure, a diagnosis unit 24 for performing a failure diagnosis, and a search unit 25 for searching data in the storage device 3. The storage device 3 includes a diagnosis rule 31 in which a knowledge base for performing a failure diagnosis is described, a guidance 32 in which an action for a failure cause is described, and a diagnosis record 33 in which past failure data is recorded. Record 33
, A detection signal 331 of a diagnosis performed in the past, a diagnosis result 332, and a treatment content 333 are recorded. Detection unit 23
Is the target system 1 via the input / output interface 21
When a signal such as a voltage value, a current value, or a tension is input from, a failure is detected by comparing it with a preset value, and a detection result is output. Upon receiving the detection result output by the detection unit 23, the diagnosis unit 24 executes a diagnosis process with reference to the diagnosis rule 31 stored in the storage device 3, and outputs a diagnosis result. The diagnosis process is performed, for example, in a case where the voltage value is abnormally low, a failure of the power supply device, and in a case where the current value is abnormally high, the motor is overloaded. Search unit 25
Receives the diagnosis result of the diagnosis unit 24, searches the guidance 32 and the diagnosis record 33 stored in the storage device 3 using the number assigned to each failure cause as a key. It should be noted that the diagnosis record 33 includes a detection signal 3 when a failure diagnosis was performed in the past.
31, a diagnosis result 332, and a treatment content 333 are recorded, and these data are stored in the storage device 3 together with a number assigned for each failure cause. Next, the procedure when the failure diagnosis device 2 of the present invention operates will be described with reference to the flowchart of FIG. (S1) First, when the failure diagnosis device 2 inputs a signal from the target system 1 through the input / output interface 21, (S2) the detection unit 23 detects a failure based on the signal and outputs data of a detection result, (S3) The data is recorded in the storage device 3. (S4) Next, the diagnosis unit 24 performs a failure diagnosis with reference to the diagnosis rule 31 stored in the storage device 3. (S41) Then, when a signal that cannot be taken from the target system 1 or data that cannot be quantified is required during the diagnosis, the situation is displayed on the display device 4, and the user who saw this inputs necessary data. Input using the device 5. (S5) On the other hand, the diagnosis unit 24 additionally records the current diagnosis result in the diagnosis record 33 of the storage device 3, and (S6) the diagnosis result is displayed on the display device 4 via the user interface 22. (S7) At the same time, the search unit 25 searches the past diagnostic record 33 stored in the storage device 3 to extract the past diagnostic result 332 diagnosed for the same failure and display it via the user interface 22 to the display device. 4 is displayed. (S8) The user identifies the cause of the failure by referring to the diagnosis result displayed on the display device 4 in the steps (S6) and (S7). When the result is input from the input device 5, the result is taken into the search unit 25 via the user interface 22. (S9) The search unit 25 searches the guidance 32 corresponding to the failure cause specified by the user, and displays the search result on the display device 4. (S10) At the same time, the search unit 25 also searches the past action contents 333 for the occurred failure, and similarly displays the search result on the display device 4. (S11) When the user inputs the action taken for the current failure from the input device 5, (S12) The document data of the input action content is additionally recorded in the diagnostic record 33.

[0006]

As described above, according to the present invention, it is possible for a user to easily incorporate know-how obtained in the past measures against a failure into a failure diagnosis system, and to determine the cause of a failure when a failure occurs. There is an effect that the two work efficiencies of the identification and the measures for the failure are improved, and the accuracy of the failure diagnosis is also improved.

[Brief description of the drawings]

FIG. 1 is a block diagram of a failure diagnosis device according to the present invention.

FIG. 2 is a flowchart showing an operation procedure of the failure diagnosis device of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 failure diagnosis target system 2 failure diagnosis device 3 storage device 4 display device 5 input device 21 input / output interface 22 user interface 23 detection unit 24 diagnosis unit 25 search unit 31 diagnosis rule 32 guidance 33 failure record 331 past detection signal data 332 past Diagnosis result 333 Past processing contents

Claims (2)

[Claims] 1. A failure diagnosis apparatus having a function of monitoring a failure of a target system, a function of diagnosing the failure, and a function of guiding a user to a process for the failure, wherein the content of the failure and the diagnosis of the failure are provided. As a result, storage means for recording each of the processing for the failure, and when the failure occurs, search past diagnostic information recorded in the storage means, extract a failure record similar to the failure that occurred, together with guidance A failure diagnosis device, comprising: display means for displaying on a display device. 2. The fault diagnosis apparatus according to claim 1, wherein when a process for the diagnosis result is input via the input device, the content of the process is stored in the storage device.