JPH0720937A - Conversation type diagnostic system - Google Patents

Abstract

PURPOSE:To lighten the burden on a user when a question required to investigate the cause of abnormality is answered to by improving the precision of the investigation of the cause of the abnormality. CONSTITUTION:A diagnostic part 3 receives a report from an abnormality detection and report part 2 and takes a diagnosis for estimating and investigating the cause of the abnormality by using the sensor input information from a sensor input device 1. A list display part 5 displays, in a list, question items that a question item management part 5a manages as to the state of a plant, which is not known only with the sensor input information from the sensor input device 1, on a display device 4. Consequently, the input of answers to the questions are urged. An answer acceptance part 7 after recognizing which question item in the lift on the display device 4 an answer inputted through an answer input part 6 corresponds to outputs the answer to a rediagnostic part 8. The rediagnostic part 8 takes a rediagnosis for the estimating and investigating the cause of the abnormality on the basis of the answer and sensor input information and outputs the rediagnostic result on the display device 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interactive diagnostic system for making an inquiry by inquiring about the status of a plant or a general machine.

[0002]

2. Description of the Related Art After detecting an abnormality, failure, or the like that has occurred in a device to be diagnosed (a system to be diagnosed) such as a plant, the cause is presumed and investigated, the action for the cause is determined, and even guidance is provided. There is a diagnostic system. The conversational diagnostic system inquires about the situation necessary for diagnosis during the estimation and investigation of the cause.

In general, a diagnostic system has a sensor in consideration of the presence or absence of a sensor capable of inputting information indicating the condition of a device to be diagnosed to the diagnostic system, and the information input by the sensor (hereinafter referred to as sensor input). It is usual to limit the diagnosis range to the range that can be judged only by the information.

On the other hand, in a conversational diagnostic system that applies the results of recent artificial intelligence research, the diagnostic range is no longer limited by the presence or absence of a sensor, and it is necessary for diagnosis when the information input by the sensor is insufficient. Status (presence or absence of symptoms)
By asking the operator of the system to supplement the information necessary for the diagnosis and proceed with the diagnosis. As a method of inquiring about the situation necessary for such a diagnosis, a method has been used in which the diagnosis system asks one by one the situation necessary for advancing the diagnosis.

[0005]

As described above, in a diagnostic system that uses only the information that can be input by the sensor, it is possible to automatically detect the abnormality of the device to be diagnosed, investigate the cause, and determine the action to be taken. There is a useful point that it becomes a system that can be done in an integrated manner. However, sensor input information that can be used for diagnosis is generally very limited. For example, regarding the status information indicating the status of the device to be diagnosed, such as "whether there is an abnormal sound or smell," or "when you try to move it," there is no sensor to detect the status information, or it is expensive. Therefore, there are many cases where there is no sensor input.

For this reason, when a person makes a diagnosis using the above-mentioned diagnosis system, there is an effective diagnosis method using situation information such as "whether there is an abnormal sound or an odor". Since there is no sensor input for checking the condition of the part, there is a disadvantage that the effective method cannot be incorporated into the diagnostic system. Therefore, the accuracy of investigating the cause decreases as much.

On the other hand, in a conversational diagnostic system, which applies a method of asking the situation information necessary for diagnosis one by one in order to make up for a lack of sensor input, a person investigates the situation in order to answer one question. After checking, I came back and entered the answer, and when I got a question, the person had to repeat the operation of investigating and checking the situation according to the content of the question and inputting the answer. . For this reason, it is troublesome and burdensome to the person. In particular, the series of work for investigation, inspection and answer input of this situation becomes more difficult as the scale of the diagnosis target such as the plant increases.

The present invention has been made in consideration of the above circumstances, and an object thereof is to improve the accuracy of investigating the cause of an abnormality that has occurred and to save conversation when answering a question. To provide a system.

[0009]

SUMMARY OF THE INVENTION The present invention comprises a display device,
Detects various situations of the device to be diagnosed, detects the occurrence of abnormality based on the sensor input information input by the sensor input means and the sensor input means for inputting the sensor input information indicating the situation An abnormality detection reporting means for reporting the detected abnormality, and based on the sensor input information from the sensor input means, a diagnosis for inferring and investigating the cause of the abnormality detected by the abnormality detection reporting means is performed. The diagnosis item for displaying the diagnosis result on the display device and the question item regarding the presence or absence of various situations of the diagnosis target device which cannot be understood only by the sensor input information from the sensor input device are associated with the abnormal item in combination with each other. The question item management means registered and managed in advance and the question items registered and managed by the question item management means are displayed in a list on the display device. Question item list display means, answer input means for inputting answers to the question items of the question item list displayed on the display device by the question item list display means, and input by the answer input means Re-diagnosis for estimating and investigating the cause of the abnormality is performed based on the answer receiving means that receives the answer, the answer received by the answer receiving means, and the sensor input information input by the sensor input means. A re-diagnosis means for displaying the re-diagnosis result on the display device is provided.

[0010]

In the above-mentioned structure, it is assumed that the question item management means has previously registered, for each abnormal item to be diagnosed, an item to be known by a question when an abnormality occurs. That is, the question items regarding the presence or absence of various conditions of the diagnosis target device that cannot be understood only from the sensor input information from the sensor input means, and the question items necessary for investigating the cause of the abnormality are combined with the abnormal item. It is registered in the question item management means in.

When an abnormality occurrence is detected by the abnormality occurrence detecting and reporting means, the diagnosis means makes a diagnosis using only the sensor input information once inputted from the sensor input means. The diagnosis result is displayed and output on the display device by the diagnosis means.

After that, the question items registered in the question item management means are displayed on the display device as a list by the list display means. Here, for each of the question items in the list on the display device, it is possible to select and answer whether or not there are various situations of the diagnosis target device, and only the question items that can be answered. Ask the user to input using the answer input means.

The re-diagnosis means receives the answer inputted by the answer input means through the answer acceptance means. Then, the re-diagnosis means re-diagnoses based on the received answer and the sensor input information input from the sensor input means, and the result of the re-diagnosis is displayed and output on the display device by the re-diagnosis means.

The above is the flow of processing of the conversational diagnostic system of the present invention. At the stage of investigating the cause by the diagnostic means,
If the diagnosis method is used to determine which one can be the true cause of the abnormal occurrence depending on the rate of occurrence of a peculiar situation to the cause, the accuracy of the cause investigation will be improved by the information increased by the question / answer. It can be expected that the grounds for making decisions on abnormalities will be strengthened.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention applied to an interactive diagnostic system for a large-scale plant will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an interactive diagnostic system according to the embodiment.

In the figure, a sensor input device 1 is for inputting the situation of a plant as sensor input information. The abnormality occurrence detection reporting unit 2 detects an abnormality in the plant based on the sensor input information input by the sensor input device 1. When the notification unit 2 detects an abnormality, the notification unit 2 issues an abnormality occurrence notification indicating that an abnormality has occurred in the plant.

When the diagnosis unit 3 receives the abnormality occurrence notification from the abnormality detection notification unit 2, the diagnosis unit 3 makes a diagnosis for inferring and investigating the cause of the abnormality based on the sensor input information from the sensor input device 1 and outputs the diagnosis result. Output to the display device 4.

The display device 4 is for displaying the diagnosis result and the like in the diagnosis section 3. In the question item management unit 5a,
Question items regarding the presence or absence of a plant situation that are not known only from the sensor input information from the sensor input device 1 are registered in a form combined with abnormal items.

The list display unit 5 displays the question items registered in the question item management unit 5a on the display device 4 as a question item list. The answer input unit 6 is for inputting answers to the questions in the question item list displayed on the display device 4.

The answer accepting unit 7 accepts the answer input from the answer input unit 6 and outputs the accepted answer to the rediagnosis unit 8. The re-diagnosis unit 8 performs a re-diagnosis for estimating and investigating the cause of the abnormality based on the response from the response receiving unit 7 and the sensor input information from the sensor input device 1. The re-diagnosis unit 8 displays the result of this re-diagnosis on the display device 4.

Next, the operation of the conversational diagnostic system having the above configuration will be described with reference to the flowchart of FIG. First, sensor input information indicating the status of the plant is input from the sensor input device 1 to the abnormality detection notification unit 2.

When the abnormality detection reporting unit 2 detects an abnormality from the sensor input information, it issues an abnormality occurrence report (step S).
1). This abnormality occurrence report is sent to the diagnosis unit 3, the list display unit 5, and the re-diagnosis unit 8.

When the diagnosis unit 3 receives the abnormality occurrence notification from the abnormality detection notification unit 2, the diagnosis unit 3 makes a diagnosis for inferring and investigating the cause of the abnormality based only on the sensor input information from the sensor input device 1. The result is displayed on the display device 4 (step S2).

After displaying the diagnosis result, the list display section 5 displays
With reference to the question item management unit 5a, a list of question items regarding the presence or absence of the situation of the plant which cannot be understood only by the sensor input information from the sensor input device 1 is displayed on the display device 4 (step S3). This list of question items is a list of questions for obtaining information necessary for estimating and investigating the cause of an abnormality that has occurred. A question item list displayed on the display device 4 at this time is shown in FIG.

The user looks at the question item list as shown in FIG. 2 on the display device 4 and inputs the answers using the answer input section 6 only for the questions that can be answered. When the answer is input, the answer receiving unit 7 identifies which question the input answer is, based on the question item list displayed on the screen by the list display unit 5, and then The answer is output to the rediagnosis unit 8 (step S4).

The re-diagnosis unit 8 re-diagnoses the abnormality based on the response from the response receiving unit 7 and the sensor input information from the sensor input device 1, and the result of the re-diagnosis, that is, the estimated / determined abnormality. The cause is displayed on the display device 4 (step S5).

In the above embodiment, the case where the invention is applied to an interactive diagnostic system for a large-scale plant has been described. However, the present invention is applicable to various diagnostic systems or operation support systems using computers for general machines and plants. It can also be applied to.

[0028]

EFFECTS OF THE INVENTION According to the present invention, an abnormal condition is obtained instead of the conventional method of asking one by one the situation (information regarding the presence or absence of a symptom, etc.) required in the process of diagnosis. Items that must be asked when an error occurs, that is, the question items are associated and combined with the abnormal items and registered in advance, and these question items are displayed collectively in the form of a list, and each question item is displayed. You can enter only the answers that can be answered, or only the answers that can be answered, and when the answer is entered, include the entered answer information and re-diagnose the cause of the abnormality that has occurred. By adopting the configuration, a format suitable for the diagnosis system to handle the diagnosis method performed by a person, the knowledge that a person has, etc. To Instead of wood, it is possible to Komu as it is placed in a diagnostic system. In this way, since the diagnosis method performed by a person, the knowledge possessed by a person, and the like can be put into the diagnosis system, the accuracy of inferring and investigating the cause of an abnormality is also improved.

Further, in the case of the conventional conversational diagnostic system for asking questions one by one, situation investigation / inspection, answer input,
Although it is necessary for a person to repeatedly perform the work of displaying a question, investigating / inspecting the situation, inputting an answer, and so on, according to the conversational diagnostic system for collectively asking questions as in the present invention, a person can display the question list. Since you can complete all the surveys and inspections of the situation, you will be able to enter answers all at once. Therefore, the burden on the person is also reduced.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an interactive diagnostic system according to an embodiment of the present invention.

FIG. 2 is a diagram showing a display example of a question item list on the display device 4 of FIG.

FIG. 3 is a flowchart for explaining the operation of the conversational diagnostic system in FIG.

[Explanation of symbols]

1 ... Sensor input device, 2 ... Abnormality detection notification unit, 3
... diagnosis unit, 4 ... display device, 5 ... list display unit,
5a ... Question item management section, 6 ... Answer input section,
7 ... Answer acceptance section, 8 ... Rediagnosis section.

Claims (1)

[Claims] 1. A display device, a sensor input unit for detecting various states of a device to be diagnosed and inputting sensor input information indicating the state, and the sensor input information input by the sensor input unit. Detecting the occurrence of an abnormality on the basis, an abnormality detection reporting means for reporting the detected abnormality, based on the sensor input information from the sensor input means,
It is not possible to know only by the diagnosis means for making a diagnosis for estimating and investigating the cause of the abnormality detected by the abnormality detection reporting means, and displaying the diagnosis result on the display device, and the sensor input information from the sensor input means. Question item management means in which question items regarding the presence or absence of various conditions of the diagnosis target device are registered and managed in advance in association with the abnormal item in combination with each other, and questions registered and managed in the question item managing means. Question item list display means for displaying items on the display device as a list, and for inputting answers to the question items of the question item list displayed on the display device by the question item list display means Answer input means, answer accepting means for accepting the answer entered by the answer input means, and the answer and the session accepted by the answer accepting means A re-diagnosis means for performing a re-diagnosis for estimating and investigating the cause of the abnormality based on the sensor input information input by the input means, and displaying the result of the re-diagnosis on the display device. A characteristic interactive diagnostic system.