JPS6235916A - Trouble diagnostic syswtem of picture processor - Google Patents

Abstract

PURPOSE:To prevent the failure in discrimination of trouble causes by outputting picture information corresponding to character information together with character information in case of trouble diagnosis. CONSTITUTION:When a system is started, characters 21 are stored in a working storage device 2. An inferring device 1 executes an executing part because inference device coincide with the condition part of a rule 01 of a trouble diagnostic data retrieving device 3, and a question 51 'is picture thin?' is outputted on the display screen of a display device 5. A picture defective image data retrieving device 5 is retrieved by the character string 'is picture thin?' simultaneously with output of this character string, and image data is accessed, and characters and image data are outputted as an output 51 to the display device 5. If 'ges' is inputted from an input device 6 in response to this question, characters 22 'picture is thin' are stored in the working storage device 2. The inferring device 1 compares the condition part of a rule 02 of the trouble diagnostic data retrieving device 3 with contents 22 of the working storage device to execute the executing part. Thus, a trouble cause 'the position of an electrifier wire is too low' is outputted on the display device 5.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field) The present invention relates to a failure diagnosis system for an image processing apparatus such as a copying machine.

(Prior art) Conventionally, in an expert system for diagnosing the failure of a copying machine, a string of characters inquiring about the failure status is output on the display, and in response, the user inputs failure data using a keyboard. A method is used in which a computer infers the location of the failure based on the failure data. In this conventional method, even when it is difficult to express the failure situation in words, it is sometimes difficult to express it accurately in words, which creates ambiguity in the interpretation of the user who responds to it, which can lead to failures. This method has the disadvantage that errors may occur in data input, leading to errors in determining the location of the failure.

(Objective) The present invention is intended to eliminate the above-mentioned drawbacks, and to eliminate the ambiguity of the text-based questions regarding the failure status, to allow the user to input failure data accurately, and to enable the computer to identify the failure location. The purpose is to increase the reliability of identification.

(Structure of the present invention) In a fault diagnosis system, image data is used at the same time as keyboard input and dialogue through display display, and at the same time a question text about the failure situation is output, image data corresponding to the content of the text is output. The feature is that the meaning of the question is made clear by searching and simultaneously outputting it to the display device-L.

(Example) Hereinafter, the present invention will be explained with reference to the drawings.

FIG. 1 shows the main points of one embodiment of the copying machine failure diagnosis expert system of the present invention.

In FIG. 1, l is a reasoning device, 2 is a working memory device, and 3 is a reasoning device.
Reference numeral 4 indicates a failure diagnosis data retrieval device, 4 a defective image data retrieval device, 5 a display device, and 6 an input device.

The inference device 1 controls the entire system. The working memory 2 temporarily stores the status of diagnosis by the fault diagnosis expert system. As shown in FIG. 2, the failure diagnosis data search trace N3 stores the failure situation and the cause of the failure at that time as a character string. A failure condition, for example, a defective condition of an image, is stored as a pair of character string and image data. Display device 5. The input device 6 is for a user to interact with the failure diagnosis expert system, and the display device outputs questions about the failure situation and image data corresponding to the questions, and the input device inputs the answers. .

FIG. 4 shows a long example of the input and output of the fault diagnosis expert system. When the system is started, the letters 5TART are stored in the working memory 2 as shown at 21. Since the inference device 1 matches the condition part of the rule O1 shown in FIG. mosquito? ” question will be output.

At the same time as this character string is output, the image defective image data search trace w4 is searched for the character string "Is the image pale?", and the image data shown in FIG. 3 is accessed.
As shown in 1, characters and image data are output to a display device 5. In the past, only the text "゛thin pa" was output, so how thin the text was was determined by the user's subjective judgment.However, if the text and image are simultaneously output as in the present invention, it is possible to determine how thin the text is. Since the limit sample is output to the display device 5-)-, the reliability of the user's judgment increases.

In addition, a more rigorous evaluation can be performed by making a hard copy of this image and comparing it with the image to be diagnosed.

By the way, if you input "Yes" from the input device 6 in response to the question from the copying device, the contents of the working memory device 2 will be "the image is pale" as shown in 22, and the reasoning device 1 will also read the fault diagnosis data. Comparing the condition part of rule 02 shown in FIG. 2 of the search device 3 with the contents 22 of the working memory W2,
2 and execute the execution part. If y, display device 5 t=.

52, the cause of the failure is output as "charger wire position is low". The inference device 1 compares the failure diagnosis data retrieval device 3 and the working storage device 2, and if there is no match, it stops.

Details of the reasoning device Nl are shown in Figure $5. The inference device 1 includes a comparator 1O, a rule selection selector 11, and a stop F unit 13.
It consists of A comparator 1° compares the data in the working storage device 2 and the failure diagnosis data retrieval device, and outputs a rule that matches the conditions. If the number of rules is zero, a signal is sent to the stop device 13 and the inference device stops. If the number of rules is not zero, it is sent to the rule selector 11. The rule selector counts the relative degree of matching of conditions among a plurality of rules, and selects the rule with the largest number as the most likely rule. If the number of rules is still plural, the one with the smaller rule number is selected.0 The selected rule is sent to the executor 12 for execution. The execution results are stored in the working memory device 2,
Activate the comparator 10 again.

(Effects) As described above, since the present invention simultaneously outputs textual information and corresponding image information when diagnosing a fault, it is less ambiguous than a method in which the situation is judged and input using only textual information.
This allows for more qualified responses. Therefore, the reliability of the determination of the cause of the failure output by the failure diagnosis system increases.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an overview of an embodiment of the copying machine failure diagnosis expert system of the present invention, FIG. 2 is a diagram explaining data of a failure diagnosis data retrieval device, and FIG. FIG. 4 is a diagram explaining the flow of diagnosis, and FIG. 5 is a diagram explaining the inference device.

Claims (1)

[Scope of Claims] 1. An image processing device that has a plurality of pieces of related data showing the relationship between a failure situation related to image processing and a countermeasure for the cause of the failure, and outputs the cause of the failure and countermeasures by inputting the failure situation. fault diagnosis system. 2. In item 1, a failure diagnosis data retrieval device that stores failure conditions, causes and countermeasures, an image data retrieval device that stores failure conditions and image data showing them, and a working memory device that stores data on the process of failure diagnosis. , a failure diagnosis system for an image processing device, comprising an input device for inputting a failure status, an output device for outputting the failure status, and an inference device for controlling these.