JPH11258180A - Appearance inspection method and system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a method and a system in which an automatic visual inspection with a small misjudgment can be performed by a simple operation by a method wherein the judged result of an automatic visual inspection process is connected to the judged result of a rejudgment process. SOLUTION: In a judgment process 16 in which the item, to be visually inspected, of an object, to be visually inspected, inside an automatic visual inspection process 10, judgment reference data which is used in the judgment process 16 is judged surely to be a more preferable state, i.e., a 'nondefective' is judged to be a 'nondefective' and a 'defective' is judged to be a 'defective', by a judgment-reference-data resetting process 40 via a judgment-reference-data- candidate creation process 30 which creates a judgment-reference-data candidate which is more preferable than the judgement reference data used in the judgment process 16 so as to correspond to the item, to be visually inspected, which is judged to be a 'nonclefective' in a rejudgment process 20 with reference to the item, to be visually inspected, which is judged to be the 'defective'. Thereby, an automatic visual inspection whose misjudgement is small can be executed. In addition, when a controller uses a prescribed time efficiently, the operating efficiency of a visual inspection can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an external appearance inspection method in which means for inspecting the appearance of a product is automated and which has re-determination means and determination reference data resetting means. The present invention relates to a visual inspection system for realizing the above.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 6, the exchange of information of the re-determination result between the external appearance inspection process and the re-determination process is generally known. As shown in the drawing, from the automatic appearance inspection process 10, the judgment information J on the acceptability of a plurality of appearance inspection items related to the inspection target product is:
It is presented to the re-determination step 20 by marking on the actual product to be inspected, output on paper, or console output. Based on the presentation content of the judgment information J, in the re-judgment step 20, the re-judgment person makes a judgment as to whether the judgment information J is correct, and repairs a correct answer, that is, a true “bad” and repairable portion, With respect to an incorrect answer, that is, a false “poor”, that is, “good”, an operation of flowing to a subsequent process as it is is performed. On the other hand, in the appearance inspection process for determining the quality of a product in the quality inspection, the judgment criterion in the quality judgment is often vague based on the sensory characteristics of the inspector, and the inspection is performed based on the approximate standard. Often. Therefore, conventionally, in this type of automatic appearance inspection process 10, it is difficult to accurately set the determination criterion data S, and the setting often depends on the experience and feeling of the administrator of the automatic appearance inspection process 10. . In addition, the determination reference data S is generally set as strictly as possible in order to completely eliminate a so-called oversight phenomenon in which a defective product is determined as a non-defective product. Therefore, the determination information J generally includes the results of the determination of the acceptability of a plurality of items to be inspected, which are true “defective” and false “bad”, that is, “good”. Here, the information of the correctness / incorrectness determination result F, that is, the appropriateness of the determination reference data S in the automatic appearance inspection process 10 is determined by the correctness / incorrectness determination result F for the determination information J of the re-determination personnel.
Are collected on paper, returned as information to a manager of the automatic appearance inspection process 10, and notified to the manager. Further, in order to more accurately grasp the appropriateness of the criterion data S in the automatic appearance inspection process 10, for example, as shown in FIG. In some cases, data may be aggregated by the server computer H. This series of operations is performed in the same manner when a plurality of re-determination personnel are present. Further, the correct / incorrect judgment result F collected in the server computer H is, for example, obtained by another computer terminal P.
The administrator of the automatic appearance inspection process 10 can recognize the total result. As a result, the administrator of the automatic appearance inspection process 10 determines the criterion data S for the automatic appearance inspection process 10.
Is in a proper state. Based on the grasp result, the automatic appearance inspection process 1
Whether or not it is necessary to change the criterion data S of 0 is determined, and if necessary, the changed part and the contents of the criterion data S are determined and changed, and the inspection performance of the automatic appearance inspection process 10 is maintained and improved. Was common.

[0003]

In such a conventional automatic appearance inspection process, there are many cases in which erroneous determination of good or bad of the production quality of a product to be inspected, that is, defective determination of a non-defective product occurs. There was a problem that the man-hour for re-judgment by the judgment staff increased. Conventionally, in order to solve such a problem, a result of re-determination by a re-determination staff based on an inspection result of an item to be inspected in an automatic appearance inspection process is, for example, an electric signal from a paper or a computer terminal P. It takes time to return the information to the administrator of the automatic appearance inspection process using information or the like, and to determine the appropriateness of the criterion data S in the automatic appearance inspection process 10, and as a result, the erroneous determination results continue to increase. There was a problem that would occur. In addition, the aggregation and return of such information imposes a large man-hour burden on re-determination personnel. In addition, the administrator has not taken a quantification measure for determining the appropriateness of the determination reference data S, and there is no guarantee that the appropriate determination reference data S will be rewritten. There was a problem that many were generated. In addition, when rewriting the determination reference data S, the administrator needs a predetermined work time, and there is a problem that the operation rate of the automatic appearance inspection process is reduced.

The present invention solves such a problem in the conventional automatic appearance inspection process by connecting the judgment results of the automatic appearance inspection process 10 and the re-judgment process 20 so that the appearance can be reduced by a simple operation with less erroneous judgment. It is an object of the present invention to provide an automatic appearance inspection method and apparatus capable of realizing an automatic inspection process.

[0005]

In order to solve the above-mentioned problems, a visual inspection method according to claim 1 comprises: (A) a visual image capturing step 12 for capturing the visual appearance of a visual inspection object; An image data generating step 14 for generating a plurality of image data corresponding to each of the plurality of visual inspection target items; and a plurality of image data generating steps 14 corresponding to each of the plurality of image data and the visual inspection target items. (B) the automatic appearance inspection step 10 having, in this order, a determination step 16 for judging the quality of the plurality of items to be inspected based on a comparison with each of the judgment reference data of Re-determination step 2 for re-examining the appearance inspection target item determined to be "defective" and re-determining the quality
0, (C) a criterion data candidate corresponding to the appearance inspection target item re-determined as “good” in the re-determination step 20, which is more preferable than the criterion data used in the determination step 16 And (D) the criterion data for resetting the criterion data used in the determination step 16 based on the criterion data candidates created in the criterion data creation step 30 Resetting step 40 is provided.

According to the above configuration, the automatic appearance inspection step 10
The appearance inspection object determined as “defective” in the re-determination step 20 for the appearance inspection object determined as “defective” in the determination step 16 for determining the quality of the appearance inspection object of the appearance inspection object within In accordance with the item, a judgment reference data candidate creating step 30 for creating a judgment reference data candidate that is more preferable than the judgment reference data used in the judgment step 16 is used, and the judgment reference data resetting step 40 is used in the judgment step 16. It is possible to easily provide an appearance automatic inspection method with less erroneous judgment by reliably judging the judgment criterion data in a more preferable state, that is, "good" as "good" and "poor" as "poor". It has the effect of providing a series of means.

According to a second aspect of the present invention, there is provided a visual inspection system.
(E) Appearance imaging means 1 for imaging the appearance of a visual inspection object
12. Image data generating means 114 for generating a plurality of image data corresponding to each of the plurality of appearance inspection target items based on the imaged appearance, and applying each of the plurality of image data and the appearance inspection target item An automatic appearance inspection means 110 having in this order a judgment means 116 for judging pass / fail of the plurality of items to be inspected based on a comparison with each of a plurality of judgment reference data preset correspondingly; F) Re-examine the appearance inspection target item determined to be “defective” by the automatic appearance inspection means 110,
Re-determining means 120 for re-determining the quality, (G) a criterion data candidate corresponding to the visual inspection target item re-determined as "good" by said re-determining means 120, A criterion data candidate creating unit 13 for creating a criterion data candidate that is more preferable than the criterion data
0, and (H) a criterion data resetting means 140 for resetting the criterion data used in the deciding means 116 based on the criterion data candidates created by the criterion data creating means 130. Features.

[0010] According to the means of the above-described system, in the automatic appearance inspection means 110, the judgment means 116 for judging the quality of the appearance inspection object of the appearance inspection object with respect to the appearance inspection object judged to be “defective”. In response to the appearance inspection target item determined as “good” by the re-determination unit 120, the determination reference data candidate creation unit 30 that creates a determination reference data candidate that is more preferable than the determination reference data used by the determination unit 116. The criterion data resetting means 140 ensures that the criterion data used in the determining means 116 is more preferable, that is, "good" is determined to be "good" and "defective" is determined to be "defective". This has the effect of providing a system capable of easily providing an automatic appearance inspection method with less noise.

According to a third aspect of the present invention, there is provided a visual inspection system.
(I) a display mechanism 22 that informs a person of a visual inspection target item determined to be "defective" by the visual inspection means 110 in the re-determination means 20, (J) the re-determination means 1
20 is characterized by having an electrical input mechanism 24 for specifying information for specifying the appearance inspection target item determined to be “good”.

According to the above configuration, the re-determining means 120
The re-judgment personnel in the inside can easily and quickly find out the items to be inspected which have been judged to be "defective" by the automatic appearance inspection means 110. The information of the erroneous determination by the automatic appearance inspection means 110 that the result of the re-determination is actually "good" for the appearance inspection target item determined as "" can be immediately collected as data. Accordingly, it is possible to provide an automatic appearance inspection system that realizes an automatic appearance inspection method for quickly determining the appropriateness of the determination reference data S in the external appearance inspection unit 110 internal determination unit 116. In addition, the enormous amount of time required by the re-determination staff to collect the erroneous determination information of the appearance inspection unit 110 on paper or the like is reduced to an extremely short time, and labor can be saved.

The visual inspection system according to claim 4 is
(G) an electrical signal propagation mechanism 520 for transmitting a determination result of “good” or “defective” from the automatic appearance inspection means 110 to the re-determination means 120, (H) the re-determination means 12
0 to the automatic appearance inspection means 110, an electrical input mechanism 2 for specifying information for specifying an appearance inspection target item determined to be "good"
Electrical signal propagation mechanism 54 for transmitting the information input at 4
0, (I) The electric signal propagation mechanism 520 includes an electric signal propagation mechanism 500 in which the electric signal propagation mechanism 540 functions bidirectionally.

According to the above construction, the result of the judgment is transmitted from the automatic appearance inspection means 110 to the re-determination means 120, and the appearance inspection means 110 obtained by the re-evaluation staff in the re-evaluation means 120 determines that the appearance defect is "bad". It is possible to very quickly propagate the erroneous determination information of the automatic appearance inspection means 110 to the external appearance inspection step that the result of the re-evaluation is actually “good” for the external appearance inspection target item determined as . This makes it possible to provide a visual inspection system that realizes an automatic visual inspection method that can easily and quickly determine the appropriateness of the criterion data S in the internal visual inspection means 110 without using paper for information transmission. Can be provided.

According to a fifth aspect of the present invention, there is provided a visual inspection system.
(J) an electrical storage mechanism 32 for storing information relating to the definition of the method of resetting the contents, timing, and the like in the criterion data candidate creating means 130; and (K) a mechanism for electrically inputting the information from outside. 34.

According to the above construction, the judgment result of the appearance inspection target item judged as "defective" by the automatic appearance inspection means 110 from within the electrically transmitted re-determination step according to the second and third aspects is provided. On the other hand, for the information determined as “good” obtained by the re-determination staff in the re-determination means 120, in the determination criterion data candidate creating means 130, the reset content and the reset timing of the determination criterion data are In the mechanism 34 for externally inputting the resetting method such as the resetting content and resetting timing, the appearance automatic inspection process 10
In the determination reference data resetting means 140, an external storage mechanism 32 stores information relating to the definition of the method of resetting contents, timing, and the like. Automatic inspection means 11
It becomes possible to rewrite the judgment reference data S in the judgment means 116 in 0. As a result, based on the result of the re-determination in the re-determination means 120, the administrator performs a quantification measure for determining the appropriateness of the determination criterion data S, and the accurate determination criterion data S is surely rewritten. As a result, it is possible to provide a visual inspection method and apparatus with extremely few erroneous determinations.

[0015]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a diagram showing a flowchart of an embodiment of a visual inspection method as an embodiment according to the first aspect of the present invention.

To explain the flow, the appearance inspection object is carried to the appearance imaging step 12 in the automatic appearance inspection step 10 and the characteristic appearance of the appearance inspection object is imaged. The obtained appearance imaging result is sent as data to an image data creating step 14 in the automatic appearance inspection step 10, is generated as electrical image data, and is determined as a determination step 16 in the automatic appearance inspection step 10. Sent to In the determination step 16, the image data is compared with determination reference data, and "good" and "defective" are identified. At this time, the appearance inspection object determined to be “good”
Sent from the automatic appearance inspection process 10
Those judged as “defective” are sent from the appearance automatic inspection process 10 to the re-judgment process 20, where the appearance is again observed by the re-judgment staff using an auxiliary tool such as a magnifying glass, and is determined as “real”. A re-determination is made. After the re-determination, the appearance inspection object determined to be “defective” is subjected to the defect correcting step 60.
Is sent to a non-defective product assembling process 50 as a post-process. The appearance inspection object determined to be “good” in the re-determination step 20 is sent to a non-defective assembly step as a post-process. Further, at this time, when it is determined to be “good”, the appearance inspection target item is transmitted as an electrical signal to the determination criterion data candidate creating step 30 as the content. As a result, the criterion data candidate creating step 30
Then, an appropriate inspection can be performed in accordance with certain determination criteria data, that is, a determination criteria data candidate that does not determine a non-defective product as a defective product is created. The created criterion data candidate is transmitted to the criterion data resetting step 40 as an electrical signal. Here, in the criterion data resetting step 40, the criterion data is reset according to the criterion data candidates created in the criterion data candidate creating step 30. The reset criterion data is electrically transmitted to the automatic appearance inspection step 10 and is used as conventional determination criterion data in the determination step 16 in the automatic appearance inspection step 10. Through the above process, the appearance automatic inspection process 1
The judgment criterion data in 0 is automatically reset based on the re-judgment result by the re-judgment personnel in the re-judgment step 20 in accordance with the appearance inspection target item of the judgment result in the automatic appearance inspection step 10. , Which is improved as more appropriate criterion data.

FIG. 2 is a diagram showing an embodiment according to the second aspect of the present invention.

An appearance inspection method according to an embodiment of the present invention is realized as an appearance inspection system. In each step shown in FIG. 1, each means is used.

FIG. 3 is a diagram showing an embodiment according to the third aspect of the present invention.

The items to be inspected which are determined to be "defective" in the automatic appearance inspection step 10 are electrically transmitted to the control computer 222 in the display mechanism 220 in the re-determination step 20 as inspection result information. The transmitted information is displayed on the inspection result display screen 224 according to the control computer 222.
Then, information such as a defective portion and a defective item is displayed to notify the re-determination personnel. The re-judgment staff makes a re-judgment according to this information, inputs the re-judgment result through the electrical input mechanism 240 of the information for specifying the visual inspection target item, and generates the information of the re-judgment result in the judgment reference data candidate creation. Inform step 30. To explain the details of the work,
As a result of the re-determination, if the result is true “defective”, pressing the “defective” switch 242 in the electrical input mechanism 240 of the specific information of the visual inspection target item indicates that the information is truly “defective”. Enter as In addition, the judgment is made in the same manner. If the judgment is "good", the "good" switch 2 in the electrical input mechanism 240 of the information for specifying the visual inspection target is specified.
By pressing 44, the fact that the judgment result of the automatic appearance inspection step 10 is incorrect is input as electrical information. The inspection result information displayed on the inspection result display screen 224 may be all the collective information for a specific and individual visual inspection object, or a plurality of pieces of information on the individual visual inspection object may be individually displayed in order. Alternatively, a method of notifying the re-judgment staff may be used. In that case, as a means for displaying in order, the re-judgment staff presses the display changeover switch 260 at the end of each re-judgment operation to switch the display of the examination information display screen 224. The re-judgment person repeats the above operation for all the visual inspection target items. The devices in the re-determination process 20 described above are configured to transmit information by the electrical signal connection 290, and the transmission of the inspection result information from the automatic appearance inspection process 10 is performed by the electrical signal connection. 520.

FIG. 4 is a diagram showing an embodiment according to the fourth aspect of the present invention.

The judgment result of “good” or “bad” transmitted from the automatic appearance inspection means 110 to the re-determination means 120 is transmitted through the electric signal transmission mechanism 520 to transmit information. In addition, the re-determination unit 120 inputs, using the electrical input mechanism 240, the information for specifying the appearance inspection target item determined as “defective” by the automatic appearance inspection unit 110 as “good”. The information is transmitted to the determination criterion data candidate creating means 130 through the electrical signal propagation mechanism 540 for transmitting the information.

FIG. 5 is a diagram showing an embodiment according to the fourth aspect of the present invention.

The electric signal propagation mechanism 500 is an information transmission mechanism for causing the electric signal propagation mechanism 520 and the electric signal propagation mechanism 540 to function in both directions.

FIG. 6 is a diagram showing an embodiment according to the fifth aspect of the present invention.

In the criterion data candidate preparing means 130, information on the re-determination result is fed back by the electric signal propagation mechanism 500 or the electric signal propagation mechanism 540, and more appropriate criterion data candidate data is prepared. Is performed. These processes are automatically performed by a series of computer processes. This processing will be described according to a specific example. For example, let S be the conventional criterion data for a certain appearance inspection item A, that is, the criterion data in the determination step 16.

According to the second and third aspects of the present invention shown in FIGS. 2, 3 and 4, the result of the re-determination by the re-determination personnel fed back is determined by the determination result of the automatic appearance inspection step 10. Does not match, and the appearance automatic inspection means 110 determines that the appearance inspection target item A is determined to be “defective”.
However, if it is actually "good", the criterion data S is not appropriate, and it is necessary to change the criterion data S to a more appropriate value in order to perform a proper inspection. There are two types of this change processing, and the value of the criterion data S is set to “good”.
Use a larger value for the "bad" decision branch,
Or a smaller number. In the former case, if the criterion for the visual inspection target item A is larger than the determined criterion data S, the defect is determined. In the latter case, the criterion for the visual inspection target item A is: If the data is smaller than the predetermined criterion data S, the defect is determined. These criteria data S
Since the resetting method, that is, the resetting content, resetting timing, etc., is not an appropriate resetting process unless the intention of the administrator of the automatic appearance inspection process 10 is reflected, the resetting process is performed by any method. Computer 36
It is necessary to indicate the intention of the administrator of the automatic appearance inspection means 110 to the user. The administrator of the automatic appearance inspection means 110 inputs the resetting method of the criterion data S by the externally inputting mechanism 34, and stores the information as electrical information in the electrical storage mechanism 32. Remember. By inputting the method of the resetting process of the criterion data S and storing it in the apparatus, the criterion data S is reset according to the intention of the administrator of the automatic appearance inspection means 110. . For example, as described above, when newly setting the criterion data N as a numerical value larger than the conventional criterion data S, the formula is expressed as “N
= S + 1 "or" N = S + 2 ", the value of n of" N = S + n "can be set arbitrarily by the administrator of the automatic appearance inspection process 10. The value of n is “N = S” when the value of the new criterion data N is set to be smaller than the value of the conventional criterion data S.
The same applies to n of “−n”. Further, in the electric storage mechanism 32, as the timing of resetting the determination reference data S, the feedback re-determination result in the re-determination means 120 does not match with the determination result of the automatic appearance inspection means 110. In other words, if the appearance inspection target item A determined as “defective” by the appearance automatic inspection means 110 is actually “good”, how many times consecutively, or how many times It is possible to store and define how the determination criterion data S needs to be reset when the error occurs or when the error occurs in the past inspection frequency. For example, if the event in which the "good" of a certain visual inspection target item B is determined to be "poor" continues even twice, the determination criterion data S can be reset to N as described above. The judgment criterion data S can be reset to N only when the event has accumulated 10 times as described above, or only when the event has occurred 50% within a certain period. Thus, the determination reference data S can be reset to N. All definitions for these reset timings are
It is desirable that the electrical input mechanism 34 of the determination reference data resetting method and the electrical storage mechanism 32 of the resetting method be capable of being set.

[0029]

As described above, according to the appearance inspection method and apparatus according to the present invention, the judgment results of the automatic appearance inspection process and the re-judgment process are connected as information to an electric signal, and the connected information is further connected. By defining a specific processing method for the information, it is possible to realize an automatic appearance inspection process with extremely few erroneous determinations by a simple operation. In addition, since the process of resetting all the judgment criteria according to the re-judgment result is automatically performed, the appearance automatic inspection process with few erroneous judgments can be realized reliably and simply. Further, since the resetting process of the determination criterion is performed by a mechanism other than the automatic appearance inspection process, it is possible to realize the provision of the automatic appearance inspection process with extremely few erroneous determinations without reducing the operation rate of the automatic appearance inspection process. .

[Brief description of the drawings]

FIG. 1 is a drawing showing a flowchart illustrating an embodiment of the present invention.

FIG. 2 is a view showing one embodiment of the present invention.

FIG. 3 is a view showing an embodiment of the present invention.

FIG. 4 is a view showing an embodiment of the present invention.

FIG. 5 is a view showing an embodiment of the present invention.

FIG. 6 is a view for explaining a conventional automatic appearance inspection process.

FIG. 7 is a view for explaining a conventional appearance automatic inspection process.

[Explanation of symbols]

 F: Correct / false judgment result in the re-judgment step H: Server computer J: Judgment information by the automatic appearance inspection step N: Reset criteria data S: Conventional judgment standard data 10: Automatic appearance inspection step 12: External appearance imaging step 14: Image data creation process 16: Judgment process 20: Re-judgment process 30: Judgment criterion data candidate creation process 32: Electric storage mechanism 34: Electrical input mechanism 36: Computer for judgment criterion reset processing 40: Rejudgment criterion data Setting process 50: Non-defective assembly process 60: Defective repair process 110: Appearance automatic inspection means 112: Appearance imaging means 114: Image data creation means 116: Judgment means 120: Re-judgment means 130: Judgment reference data candidate creation means 140: Judgment criteria Data resetting means 220: Display mechanism in redetermination step 20 222: Control computer 224: Check Result display screen 240: electrical input mechanism of re-judgment result 242: defective switch 244: good switch 260: display changeover switch 290: signal line in display mechanism 220 500: electrical signal propagation mechanism 520: electrical signal propagation mechanism 540: Bidirectional electrical signal propagation mechanism

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[Procedure amendment]

[Submission date] June 4, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1 is a drawing showing a flowchart illustrating an embodiment of the present invention.

FIG. 2 is a view showing one embodiment of the present invention.

FIG. 3 is a view showing an embodiment of the present invention.

FIG. 4 is a view showing an embodiment of the present invention.

FIG. 5 is a view showing an embodiment of the present invention.

FIG. 6 is a view showing an embodiment of the present invention.

FIG. 7 is a view for explaining a conventional appearance automatic inspection process.

FIG. 8 is a diagram illustrating a conventional appearance automatic inspection process.

[Explanation of Signs] F: Correct / false judgment result in re-judgment process H: Server computer J: Judgment information by automatic appearance inspection process N: Reset judgment standard data S: Conventional judgment standard data 10: Automatic appearance inspection process 12: Appearance imaging step 14: Image data creation step 16: Judgment step 20: Rejudgment step 30: Judgment criterion data candidate creation step 32: Electrical storage mechanism 34: Electrical input mechanism 36: Computer for judgment criterion reset processing 40 : Judgment reference data resetting process 50: Non-defective product assembling process 60: Defect repairing process 110: Appearance automatic inspection means 112: Appearance imaging means 114: Image data creation means 116: Judgment means 120: Rejudgment means 130: Judgment criteria data candidate Means 140: Judgment reference data resetting means 220: Display mechanism in re-judgment step 20 222: Control computer 224: inspection result display screen 240: electrical input mechanism of re-judgment result 242: defective switch 244: good switch 260: display changeover switch 290: signal line in display mechanism 220 500: electrical signal transmission mechanism 520: electrical signal Propagation mechanism 540: Bidirectional electrical signal propagation mechanism ──────────────

[Procedure amendment]

[Submission date] June 4, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0002

[Correction method] Change

[Correction contents]

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 7 , information exchange of re-determination results between an automatic appearance inspection process and a re-determination process of this type is generally known. As shown in the drawing, from the automatic appearance inspection process 10, the judgment information J on the acceptability of a plurality of appearance inspection items related to the inspection target product is:
It is presented to the re-determination step 20 by marking on the actual product to be inspected, output on paper, or console output. Based on the presentation content of the judgment information J, in the re-judgment step 20, the re-judgment staff makes a right / wrong judgment on the judgment information J and repairs a correct answer, that is, a true “bad” and repairable portion, With respect to an incorrect answer, that is, a false “poor”, that is, “good”, an operation of flowing to a subsequent process as it is is performed. On the other hand, in the appearance inspection process for determining the quality of a product in the quality inspection, the judgment criterion in the quality judgment is often vague based on the sensory characteristics of the inspector, and the inspection is performed based on the approximate standard. Often. Therefore, conventionally, in this type of automatic appearance inspection process 10, it is difficult to accurately set the determination criterion data S, and the setting often depends on the experience and feeling of the administrator of the automatic appearance inspection process 10. . In addition, the determination reference data S is generally set as strictly as possible in order to completely eliminate a so-called oversight phenomenon in which a defective product is determined as a non-defective product. Therefore, the determination information J generally includes the results of the determination of the acceptability of a plurality of items to be inspected, which are true “defective” and false “bad”, that is, “good”. Here, the information of the correctness / incorrectness determination result F, that is, the appropriateness of the determination reference data S in the automatic appearance inspection process 10 is determined by the correctness / incorrectness determination result F for the determination information J of the re-determination personnel.
Are collected on paper, returned as information to a manager of the automatic appearance inspection process 10, and notified to the manager. Further, in order to more accurately grasp the appropriateness of the criterion data S in the automatic appearance inspection process 10, for example, as shown in FIG. In some cases, data may be aggregated by the server computer H. This series of operations is performed in the same manner when a plurality of re-determination personnel are present. Further, the correct / incorrect judgment result F collected in the server computer H is, for example, obtained by another computer terminal P.
The administrator of the automatic appearance inspection process 10 can recognize the total result. As a result, the administrator of the automatic appearance inspection process 10 determines the criterion data S for the automatic appearance inspection process 10.
Is in a proper state. Based on the grasp result, the automatic appearance inspection process 1
Whether or not it is necessary to change the criterion data S of 0 is determined, and if necessary, the changed part and the contents of the criterion data S are determined and changed, and the inspection performance of the automatic appearance inspection process 10 is maintained and improved. Was common.

Claims (5)

[Claims] (A) An appearance imaging step (12) for imaging the appearance of an appearance inspection object, an image for generating a plurality of image data corresponding to each of a plurality of appearance inspection objects based on the imaged appearance. A data generation step 14 and comparing the plurality of image inspection data items with the plurality of judgment reference data preset in correspondence with the appearance inspection target items, An automatic appearance inspection step 10 having a judgment step 16 for judging pass / fail in this order, and (B) an external appearance inspection item judged as “defective” in the automatic appearance inspection step 10 is re-inspected,
A re-determining step 20 for re-determining the pass / fail, (C) a criterion data candidate corresponding to the visual inspection target item re-determined as “good” in the re-determining step 20;
6. A criterion data candidate creation step 30 for creating a criterion data candidate that is more preferable than the criterion data used in step 6; and (D) the determination step based on the criterion data candidate created in the criterion data creation step 30. 16. A visual inspection method, comprising: a criterion data resetting step 40 of resetting criterion data used in step 16. 2. (E) An appearance image pickup means 112 for picking up an appearance of an object to be inspected, and an image for generating a plurality of image data corresponding to each of a plurality of items to be inspected based on the imaged appearance. Data generating means 114, and comparing each of the plurality of image data with each of a plurality of determination criterion data set in advance corresponding to the appearance inspection target item, Automatic appearance inspection means 110 having a judgment means 116 for judging pass / fail in this order; (F) the appearance inspection target item judged as "defective" by the appearance automatic inspection means 110 is re-examined, and the pass / fail is re-examined. Redetermining means 120 for determining,
(G) A judgment criteria data candidate corresponding to the appearance inspection target item re-judged as “good” by the re-judgment means 120, which is more preferable than the judgment criterion data used by the judgment means 116. And (H) resetting the criterion data used by the determining means 116 based on the criterion data candidates generated by the criterion data generating means 130. Means 140 for inspecting appearance. 3. The visual inspection system according to claim 2, wherein (I) the re-determination means 120 informs a person of the visual inspection target item determined to be "defective" by the visual inspection means 110. Mechanism 22, (J) an appearance inspection system further comprising an electrical input mechanism 24 for specifying information for specifying the appearance inspection target item determined to be “good” by the re-determination means 120; (K) an electrical signal propagation mechanism 520 for transmitting a result of judgment of “good” or “bad” from the external appearance inspection means 110 to the re-judgment means 120; To the automatic appearance inspection means 110,
An electrical signal propagation mechanism 540 for transmitting information input by the electrical input mechanism 24 of the specific information of the visual inspection target item determined to be “good”; (M) the electrical signal propagation mechanism 520
A visual inspection system comprising: an electrical signal propagation mechanism 500 in which the electrical signal propagation mechanism 540 functions bidirectionally. 5. (N) The criterion data candidate creating means 1
At 30, an electrical storage mechanism 32 for storing information related to the definition of the method of resetting the contents, timing, etc.
(O) An appearance inspection system further comprising a mechanism 34 for electrically inputting the information from outside.