JP7429945B2 - Design support method, design support program, and design support system - Google Patents

Description

The present invention relates to a design support method, a design support program, and a design support system for industries that manufacture one or a small number of products to order.

FIG. 8 is a schematic diagram of the design management process and production management process in shipbuilding based on build-to-order manufacturing. Large ships such as tankers and LNG carriers are designed and manufactured for each order based on the specifications requested by the customer.
In design, under design management, there is performance/basic design, in which the basic design of the ship's shape and performance is carried out through verification using model ships, etc., and detailed design and production design, in which detailed design and production design are carried out based on the basic design. The design is done.
In addition, in production, under production management, adjustment schedules (main schedules) and fixed schedules (schedules that subdivide the adjustment schedule) are planned, large materials (materials with long delivery times) and small materials (materials with short delivery times). ), block construction (construction of each block), and internal manufacturing (wiring, piping, outfitting, etc.) will be carried out.
Unlike mass-produced products, the design and production of made-to-order products proceed simultaneously (in parallel) without going through a trial manufacturing confirmation process, as shown in FIG. However, designs for made-to-order products generally have tight deadlines and a huge number of items and drawings to check, making it difficult for the design department to perform sufficient confirmation work, resulting in drawings containing defects being submitted to the manufacturing site. Sometimes. Even with such drawings, manufacturing is carried out through "on-site coordination" in which engineers at the manufacturing site discover defects, report them to the designer, and make adjustments, but this increases costs due to back-work, etc.

Here, in Patent Document 1, when a defective or defective phenomenon occurs in a new design example, by inputting the assembly elements of the design example from the input means, the assembly operation/attribute coefficients in the database are used. , a defect influence index is calculated for each assembly element, assembly elements that require improvement are extracted based on the defect influence index, and specific solutions are determined by the database for each extracted assembly element. A design support method is disclosed in which a specific solution can be selected for each extracted assembly element by constructing and displaying this on a display.
Furthermore, Patent Document 2 discloses a system configured such that a user can connect to a web server to design construction materials and obtain the results, calculate and output data based on data input by the user, and It has a database that stores calculation results, and the calculation results can be downloaded by the user.Using a design support system that records the calculation results in the database, people other than the user, such as those on the manufacturer's side, can refer to the database to eliminate design mistakes. It is disclosed that the following checks are carried out.
Patent Document 3 also includes a storage device that stores three-dimensional CAD data and an arithmetic processing device that executes design work based on the three-dimensional CAD data, and the three-dimensional CAD data is stored in a three-dimensional CAD object as knowledge. The arithmetic processing unit stores the knowledge association data in the three-dimensional CAD data during the design work, and also stores the knowledge association data in the three-dimensional CAD data to create the three-dimensional CAD data. A three-dimensional CAD system device is disclosed that refers to knowledge data associated with an object.
In addition, Patent Document 4 describes a first-order feature point input in which specific coordinates of a 3D CAD model are knowledge-related points (first-order feature points), a plurality of first-order feature points are grouped, and higher-order features are input. A feature point input means by inputting a point or a higher feature point input for grouping feature points of an arbitrary degree and further inputting a feature point of a higher order, and at least one knowledge for each feature point of each degree. A knowledge input means for registering by selecting from a classification and word technical classification management means for expressing a unified meaning, and a unique management number assigned to the minutiae inputted by the minutiae input means, A unique management number is assigned to each piece of knowledge input for each feature point of each degree, and the knowledge and the 3D CAD model are associated with each other through the unique management number and stored. A knowledge management device is disclosed, which includes a search means for searching and displaying knowledge related to a computer.
Furthermore, Patent Document 5 describes a knowledge/example DB that can systematically manage and store designer's knowledge/past defect cases, a means for registering knowledge/defect cases in the DB, and necessary knowledge/cases from the DB. It is equipped with a drawing verification means for acquiring defect cases and mechanically verifying the content of the electronic drawing data, a verification result display means, an automatic correction means, and a quality certification means, and when the electronic drawing data to be verified is extracted, Classify and organize the verifiable items of the extracted content, extract knowledge and examples that match the classification of verifiable items from the DB, and verify whether there are any defects in the content of the electronic drawing data. In addition to presenting the results, defects found in the drawings are mechanically corrected using knowledge and defect examples from the DB, and quality certification information is automatically added to the verified or corrected electronic drawing data. A drawing verification system is disclosed.

Japanese Patent Application Publication No. 2006-302192 Japanese Patent Application Publication No. 2002-92070 International Publication No. 2016/207991 JP2013-97743A Japanese Patent Application Publication No. 2004-171365

The design support method of Patent Document 1 supports the design of home appliances, OA products, etc., and does not support the design of made-to-order products whose specifications vary depending on the order.
Further, in the design support system of Patent Document 2, since a human checks for design errors, it is difficult to quickly check at the appropriate timing.
Further, the three-dimensional CAD system device of Patent Document 3 does not use data related to production management, and is not sufficient as reference knowledge information.
Further, the knowledge management device of Patent Document 4 does not use data related to production management, and the knowledge it accumulates is not sufficient.
Further, the drawing verification system of Patent Document 5 does not use data related to production management to accumulate past failure cases, and the knowledge used for verification is insufficient.
Therefore, the present invention aims to provide a design support method, a design support program, and a design support system that reduce the creation of design drawings containing defects by providing appropriate information in the design of products manufactured to order. purpose.

The design support method according to claim 1 is a design support method for industries that manufacture one or a small number of products to order, and includes a design status check for checking the design status of a product designed using a CAD system. step, a task confirmation step to check the task corresponding to the design situation by checking the production management database, a knowledge check step to check the design knowledge base corresponding to the design situation and the task, and a step to check the design situation by checking the design knowledge base. The design knowledge base is equipped with a presentation information narrowing step that narrows down the presentation information by considering the task, and an information provision step that provides narrowed presentation information corresponding to the design situation. It is characterized by extracting knowledge through machine learning or statistical processing based on events and tasks, identifying defect situations, and linking the defect situations to the design situation using ontology technology.
According to the first aspect of the present invention, the presentation information based on the knowledge stored in the design knowledge base is provided according to the design situation, so it is possible to reduce the creation of design drawings containing defects. Additionally, the knowledge in the design knowledge base can be made useful. Furthermore, knowledge can be stored in the design knowledge base in an abstracted form that does not depend on individual products.

The present invention as set forth in claim 2 is characterized in that events occurring during on-site work are accumulated based on the results of communication with a design department that performs design.
According to the second aspect of the present invention, the knowledge in the design knowledge base can be made more useful by accumulating the results of communication between the site and the design department in the site event database .

The present invention as set forth in claim 3 is characterized in that the design status is confirmed based on design work monitoring using a CAD system.
According to the present invention as set forth in claim 3 , the design status is automatically checked and checked against the design knowledge base based on the work monitoring of the CAD system, so information is automatically provided when necessary. be able to.

A fourth aspect of the present invention is characterized in that work monitoring uses at least one of an operation log of a CAD system and a sensor log of a sensor installed in an IoT terminal.
According to the present invention as set forth in claim 4 , it becomes easier to detect design work that may cause a problem.

A fifth aspect of the present invention is characterized in that the design knowledge base is checked by receiving an application from a designer who designs using a CAD system.
According to the present invention as set forth in claim 5 , the designer can obtain the presentation information at any timing and in a timely manner according to the progress of the work.

The present invention as set forth in claim 6 is characterized in that the presentation information is displayed as a pop-up on at least one of the display screen of the CAD system and the display screen of the design process management terminal.
According to the present invention as set forth in claim 6 , it is possible to reduce the likelihood that a designer will overlook presentation information and create a drawing that includes defects. Further, it becomes easy to confirm the design process manager who manages the design process.

In the seventh aspect of the present invention, when changing the design of a product based on the presented information, the changed contents are stored in at least a production management database and a field event database that stores events occurring in field work corresponding to the design. It is characterized by being reflected on one side.
According to the present invention as set forth in claim 7 , new data is reflected in the production management database and the field event database, so that tasks in the production management database can be accurately changed, and knowledge in the design knowledge base can be made more useful. It can be made into something.

The design support program according to claim 8 is characterized by causing a computer to execute the design status confirmation step, task confirmation step, knowledge collation step, presentation information narrowing down step, and information provision step in the design support method. .
According to the eighth aspect of the present invention, it is possible to provide a program that reduces the creation of design drawings containing defects.

The design support system according to claim 9 is a design support system for an industry that manufactures a single or a small number of products to order, and includes a CAD system for designing products, a production management database for managing tasks, A design knowledge base, an information provision means that provides presentation information corresponding to the design situation, and a design knowledge base that checks the product design situation and collates it with the production management database and matches the design knowledge base that corresponds to the task. The design knowledge base is equipped with a knowledge control means that transmits presentation information narrowed down by taking into consideration tasks for the design situation. It is characterized by processing and extracting knowledge to identify the defect situation, and linking the defect situation to the design situation using ontology technology .
According to the ninth aspect of the present invention, the presentation information based on the knowledge stored in the design knowledge base is provided according to the design situation, so it is possible to reduce the creation of design drawings containing defects. Additionally, the knowledge in the design knowledge base can be made useful. Furthermore, knowledge can be stored in the design knowledge base in an abstracted form that does not depend on individual products.

The present invention as set forth in claim 10 is characterized in that events occurring during on-site work are accumulated based on the results of communication using a communication means with a design department that performs design.
According to the tenth aspect of the present invention, the knowledge in the design knowledge base can be made more useful by accumulating the results of communication between the site and the design department in the site event database .

An eleventh aspect of the present invention is characterized in that the confirmation of the design status is performed using a work monitoring means for monitoring the design work status of the CAD system.
According to the present invention as set forth in claim 11 , the design status is automatically checked and checked against the design knowledge base based on the work monitoring of the CAD system, so information is automatically provided when necessary. be able to.

The present invention as set forth in claim 12 is characterized in that the work status monitoring by the work monitoring means is performed using at least one of an operation log of the CAD system and a sensor log of a sensor installed in the IoT terminal.
According to the present invention as set forth in claim 12 , it becomes easier to detect design work that may cause a problem.

The present invention as set forth in claim 13 is characterized in that the design knowledge base is checked through a reception means that receives an application from a designer who designs using a CAD system.
According to the thirteenth aspect of the present invention, the designer can obtain the presentation information at any timing and in a timely manner according to the progress of the work.

The present invention as set forth in claim 14 is characterized in that the information providing means pops up the presented information on at least one of the display screen of the CAD system and the display screen of the design process management terminal.
According to the fourteenth aspect of the present invention, it is possible to reduce the likelihood that a designer will overlook presentation information and create a drawing that includes defects. Further, it becomes easy to confirm the design process manager who manages the design process.

In the fifteenth aspect of the present invention, when the product design is changed based on the presented information, the knowledge control means stores the changed contents in the production management database and the events occurring in the field work corresponding to the design. It is characterized by being reflected in at least one of the on-site event databases.
According to the present invention as set forth in claim 15 , new data is reflected in the production management database and the field event database, so that tasks in the production management database can be accurately changed and knowledge in the design knowledge base can be made more useful. It can be made into something.

The present invention according to claim 16 is characterized in that the CAD system, the production management database, the design knowledge base, and the information providing means are connected via a communication line, and the knowledge control means performs control via the communication line. shall be.
According to the present invention as set forth in claim 16 , it is possible to provide presentation information according to the design situation using the design support system even from a place remote from each device.

The present invention as set forth in claim 17 is characterized in that the design knowledge base and the knowledge control means are installed in a location isolated from the CAD system, the production management database, and the information providing means.
According to the present invention as set forth in claim 17 , for example, the design knowledge base and the knowledge control means are installed in one place and shared, and the CAD system, the production management database, and the information providing means are distributed in a plurality of places. It becomes possible to operate the system by installing it.

The present invention according to claim 18 is characterized in that the design knowledge base is obtained by extracting knowledge based on events occurring in field work corresponding to the design of a plurality of products.
According to the present invention as set forth in claim 18 , it is possible to construct a design knowledge base based on data of more product designs and occurrence events, thereby making the knowledge of the design knowledge base even more useful. I can do it.

According to the design support method of the present invention, the presentation information based on the knowledge stored in the design knowledge base is provided according to the design situation, so it is possible to reduce the creation of design drawings containing defects. Additionally, the knowledge in the design knowledge base can be made useful. Furthermore, knowledge can be stored in the design knowledge base in an abstracted form that does not depend on individual products.

In addition , if events that occur during on-site work are accumulated based on the results of communication with the design department that conducts design, design knowledge can be accumulated by accumulating the results of communication between the on-site and design department in the on-site event database. Base knowledge can be made more useful .

In addition , if the design status is checked based on design work monitoring using a CAD system, the design status is automatically checked and checked against the design knowledge base based on the CAD system's work monitoring. Therefore, information can be automatically provided when necessary.

Further, when work monitoring uses at least one of the operation log of the CAD system and the sensor log of the sensor mounted on the IoT terminal, it becomes easier to detect design work that may cause problems.

In addition, when checking the design knowledge base upon receiving an application from a designer who designs using a CAD system, the designer can submit the information at any time or in a timely manner according to the progress of the work. information can be obtained.

In addition, if the presented information is displayed as a pop-up on at least one of the display screen of the CAD system and the display screen of the design process management terminal, it is possible for the designer to overlook the presented information and create drawings with defects. Can be reduced. Further, it becomes easy to confirm the design process manager who manages the design process.

In addition, when changing the product design based on the presented information, if the changed contents are reflected in at least one of the production management database and the field event database that accumulates events occurring in field work corresponding to the design, By reflecting new data in the production management database and field event database, tasks in the production management database can be changed accurately and the knowledge in the design knowledge base can be made more useful.

Further, according to the design support program of the present invention, it is possible to provide a program that reduces the creation of design drawings containing defects.

Further, according to the design support system of the present invention, presentation information based on knowledge stored in the design knowledge base is provided according to the design situation, so it is possible to reduce the creation of design drawings containing defects. Additionally, the knowledge in the design knowledge base can be made useful. Furthermore, knowledge can be stored in the design knowledge base in an abstracted form that does not depend on individual products.

In addition , when events that occur during on-site work are accumulated based on the results of communication using communication means with the design department that performs design, the results of communication between the on-site and design department are accumulated in the on-site event database. This makes the knowledge in the design knowledge base more useful .

In addition , if the design status is confirmed using a work monitoring means that monitors the design work status of the CAD system, the design status is confirmed based on the work monitoring of the CAD system and checked against the design knowledge base. Since this is done automatically, information can be automatically provided when necessary.

In addition, when the work status of the work monitoring means is monitored using at least one of the operation log of the CAD system and the sensor log of the sensor installed in the IoT terminal, it is easier to detect design work that may cause problems. Become.

In addition, when checking the design knowledge base through a reception means that accepts applications from designers who design using a CAD system, the designer can check the design knowledge base at any time or according to the progress of the work. Presentation information can be obtained in a timely manner.

In addition, when displaying the presented information as a pop-up on at least one of the display screen of the CAD system and the display screen of the design process management terminal, the information providing means may cause the designer to overlook the presented information and cause the drawing to contain defects. can be reduced. Further, it becomes easy to confirm the design process manager who manages the design process.

Furthermore, when changing the design of a product based on the presented information, the knowledge control means stores the changed content in at least one of a production management database and a field event database that accumulates events occurring in field work corresponding to the design. When the new data is reflected in the production management database and field event database, it is possible to accurately change the tasks in the production management database and make the knowledge in the design knowledge base more useful. can.

In addition, if the CAD system, production management database, design knowledge base, and information provision means are connected via a communication line, and the knowledge control means is controlled via the communication line, the knowledge control means may be located at a location remote from each device. Presentation information can be provided according to the design situation using the design support system even from the beginning.

In addition, if the design knowledge base and knowledge control means are installed in a separate location from the CAD system, production management database, and information provision means, for example, the design knowledge base and knowledge control means can be installed in one place and shared. This makes it possible to distribute and install the CAD system, production management database, and information provision means in multiple locations.

In addition, if the design knowledge base is based on knowledge extraction based on events that occurred during field work that corresponds to the design status of multiple products, the design knowledge base may be based on data on the designs and events of more products. Since a design knowledge base can be constructed, the knowledge in the design knowledge base can be made more useful.

Schematic diagram of a design support system according to an embodiment of the present invention Flowchart of building a knowledge base for the same design Flowchart for building the on-site event database Conceptual diagram of design work using the same design knowledge base Flowchart of the design support method Management flowchart for the design process manager Diagram showing the design support system installed in multiple locations Schematic diagram of the design management process and production management process in shipbuilding based on made-to-order manufacturing

Hereinafter, a design support method, a design support program, and a design support system according to embodiments of the present invention will be described.

FIG. 1 is a schematic diagram of a design support system according to the present embodiment, FIG. 2 is a flowchart for constructing a design knowledge base, and FIG. 3 is a flowchart for constructing a site event database.
Design support systems are used in industries that manufacture one or a small number of products to order. Examples of products that are manufactured to order include large ships such as tankers and LNG carriers, architectural structures, civil engineering materials, and plant equipment.
The design support system includes a CAD system 10, a design/production management database 20, a design knowledge base 30, an information provision means 40, a knowledge control means 50, a knowledge extraction means 60, a work monitoring means 70, and a reception means. 80, a communication means 90, and a sensor 100. The design/production management database 20 includes a production management database 21 and a field event database 22. The CAD system 10, communication means 90, and sensor 100 are incorporated into a design terminal 110 used by a designer. The communication means 90 is a mail function, a voice chat function, or the like.
Further, a design process management terminal 120 used by a design process manager is connected to the design support system. The design process manager manages the work status of the designer.

A designer designs a product using the CAD system 10. The CAD system 10 of this embodiment is a 3D-CAD system. In some cases, there is only one designer, but in the case of detailed design and production design, multiple designers often work in parallel.

The design/production management database 20 stores, as basic data for constructing the design knowledge base 30, data related to design and production in the made-to-order manufacturing that has been carried out so far. Furthermore, new data regarding design and production is accumulated in the design/production management database 20 each time the design support system is used for designing in made-to-order manufacturing.
Of the design/production management database 20, the production management database 21 manages tasks. The task is related to production control. The production management database 21 stores data related to product information and process information. The product information includes, for example, product specifications and delivery dates. Further, the process information includes production planning (schedule), personnel allocation, work load, equipment operating status, material procurement, inventory management, work content and work procedure, quality control, and cost control.
In addition, the site event database 22 contains various information that occurs during the manufacturing process during design and site work, such as the realization of design errors, purchasing errors, occurrence of defects, inconsistency with quality targets, process procedure errors, trial run defects, etc. Events that occur are accumulated.

The design knowledge base 30 stores information (knowledge) about defects and mistakes that have occurred in the past in an abstracted form that does not depend on individual products as a result of knowledge extraction.
Here, construction of the design knowledge base 30 will be explained with reference to FIG. 2.
The knowledge extraction means 60 extracts data related to the content of the defect that occurred and data related to the correction content of the defect from the site event database 22 (site event data retrieval step S1), and also retrieves data related to product information from the production management database 21. Then, data related to process information is extracted (production management data extraction step S2).
The knowledge extraction means 60 extracts knowledge from the data extracted in the field event data extraction step S1 and the production management data extraction step S2 (knowledge extraction step S3), and sends the extracted knowledge as design knowledge to the design knowledge base 30 (design Knowledge transmission step S4). As a result, a design knowledge base 30 storing knowledge is constructed.
In this manner, the design support system constructs the design/production management database 20 based on events that occur during on-site work, and constructs the design knowledge base 30 in which knowledge related to design is extracted from the design/production management database 20.
The design knowledge base 30 accumulates design knowledge by accumulating events that occur in on-site work corresponding to the design in the on-site event database 22, and extracting knowledge using the knowledge extraction means 60 based on tasks and occurring events to accumulate knowledge. Base 30 knowledge can be made useful.

The target of the design support system is a single item that is manufactured on a made-to-order basis, and the same product is not produced in large numbers. Therefore, it is important to use product information and process information in the production management database 21 and abstract it as general-purpose knowledge that does not depend on the product.
Therefore, in constructing the design knowledge base 30, the accumulated data in the design/production management database 20 is subjected to statistical processing (statistical analysis) or machine learning to identify locations, conditions, and manufacturing where defects are likely to occur. We identify defects that have a large impact and systemize them as knowledge by using ontology technology to link them to an ontology that expresses the design process. This allows information (knowledge) about defects and mistakes that have occurred in the past to be stored in the design knowledge base 30 in an abstracted form that does not depend on individual products.

Returning to FIG. 1, the work monitoring means 70 monitors the designer's work status. The work monitoring means 70 monitors the work status using at least one of the operation log of the CAD system 10 and the sensor log of a sensor installed in an IoT terminal (not shown). This makes it easier to detect design work that could cause problems.
The operation log of the CAD system 10 includes, for example, a designer's software work log, a designer's work process log identified by image analysis of the designer's screen, and a keyboard provided in the design terminal 110 used by the designer. Examples include logs of the sensor 100 built into the mouse.
Furthermore, examples of the IoT terminal include a telephone, a camera, a microphone, a biological sensor that acquires biological information, a position sensor that acquires position information, and the like.

The knowledge control means 50 checks the design status of the product, collates it with the production management database 21, collates it with the design knowledge base 30 corresponding to the task, and provides presentation information narrowed down by taking the task into consideration with respect to the design status through the collation. introduce.
Note that the design status includes confirmation of the entire drawing (drawing inspection) at the time of completion of the design as well as during the design process. The confirmation of the design status also includes confirmation of at least one of the drawing name, drawing ID, drawing identification code, and the like.
The design status can be confirmed using the work monitoring means 70 that monitors the design work status of the CAD system 10. In this case, the design status is automatically checked and checked against the design knowledge base 30 based on the work monitoring by the work monitoring means 70, so information can be automatically provided when necessary.
Further, the design knowledge base 30 can also be checked through the receiving means 80 that receives applications from designers who perform designs using the CAD system 10. In this case, the designer can obtain the presentation information at any timing and in a timely manner according to the progress of the work. The reception means 80 is, for example, a conversational UI (User Interface) such as a chatbot.
When changing the product design based on the presented information, the knowledge control means 50 reflects the changed contents in the production management database 21 and the field event database 22. By reflecting new data in the design/production management database 20, tasks in the production management database 21 can be changed accurately and the knowledge in the design knowledge base 30 can be made more useful.
This makes it possible to distinguish between incomplete design information and defective design information, which is characteristic of the order-receiving industry where design work and production work occur simultaneously, and the knowledge in the design knowledge base 30 can be made more useful. Here, unfinished design information is unfinished design information, but it contains design information necessary for initial production processes such as ordering materials and outsourcing, and is used as a temporary drawing in the production process. As the process progresses, it will be compiled as final design information.

The information providing means 40 sends presentation information corresponding to the design situation to the design terminal 110 and the design process management terminal 120 in order to provide the designer and the design process manager with presentation information. The design terminal 110 and the design process management terminal 120 display the received presentation information on their respective display screens.

Here, construction of the on-site event database 22 will be explained with reference to FIG.
In the design department, a design drawing is created (design drawing creation step S11). In the process of creating a design drawing, reference is made to the design knowledge base 30 (knowledge verification step S12). The completed design drawings are checked by the designer and the design process manager and sent to the manufacturing department (design drawing sending step S13).
In the manufacturing department that performs on-site work, it is determined whether or not there are defects in manufacturing based on the design drawings, and whether defects have occurred as a result of manufacturing (defect determination step S14). Furthermore, in a defect determination step S14, it is determined whether the defect is related to design or manufacturing. If it is determined that there are no defects in the design drawings, countermeasures will be taken for manufacturing-related defects. On the other hand, if it is determined in the defect determination step S14 that there is a defect in the design drawing, the details of the defect are reported to the design department, and adjustments are made to correct the defect (report/adjustment step S15). The malfunction details, which are malfunction data in the reporting/adjustment step S15, are sent to the field event database 22 (fault content transmission step S16).
Further, the design department corrects the drawings based on the contents of the report/adjustment step S15 as necessary (drawing correction step S17). The drawing correction content, which is defect data in the drawing correction step S17, is sent to the site event database 22 (drawing correction content transmission step S18). Furthermore, the contents to be reflected in production management are also sent to the production management database 21. For example, along with the modification of drawings, the contents to be modified such as production planning and material procurement as tasks are also sent. If a design change such as a drawing correction in the design department affects the production department or the overall delivery schedule, the change must be approved after consultation with at least the design process manager and the production manager, and production Manage and change delivery dates.
Correction procedure data, which is one of the defect data sent to the field event database 22, can be obtained by reading data of defective design drawings and software work log data from the CAD system 10. In addition, information on the content of the malfunction and its solution, which is one of the malfunction data sent to the field event database 22, is obtained from voice data exchanged between the design department and the manufacturing department from the data of the communication means 90 and the sensor 100. , e-mail data, chat data, bulletin board records, and handwritten notes can be acquired as scanned electronic data. A database is created by combining these data. In this way, data can be mechanically acquired from the CAD system 10 used for design, the communication means 90 used for communication between the manufacturing department and the design department, or the design terminal 110 or the sensor 100 attached to the designer. The field event database 22 can be constructed without burdening the design department or manufacturing department to input defect data.
In addition, by accumulating events that occur during on-site work in the on-site event database 22 based on the results of communication using the communication means 90 with the design department that performs design, the knowledge in the design knowledge base 30 can be made more useful. can do.

FIG. 4 is a conceptual diagram of design work using the design knowledge base, and FIG. 5 is a flowchart of the design support method.
If a question arises regarding the design in the design drawing creation step S11, the designer makes an inquiry to the design support system via the receiving means 80 (inquiry step S21). In addition to the above-mentioned chatbot, examples of the reception means 80 include, for example, an icon displayed on the screen of the CAD system 10, a dedicated button provided around the CAD system 10, a microphone that accepts audio, and the like.
Upon receiving the inquiry, the design support system uses the knowledge control means 50 to check the production management database 21 and confirm the task corresponding to the design situation from the product information and process information (task confirmation step S22). Further, the knowledge control means 50 refers to the design knowledge base 30 and collates knowledge information corresponding to the design situation and the task (knowledge collation step S12). Furthermore, the knowledge control means 50 narrows down the presented information by taking into account the task in relation to the design situation through comparison (presentation information narrowing step S24), and determines whether there is a problem with the design work.
When the knowledge control means 50 determines that there is no problem with the design work, it replies to the designer via the reception means 80 that there is no problem.
On the other hand, if the knowledge control means 50 determines that there is a problem with the design work, it uses the information provision means 40 to present the problem location and its correction plan to the designer as presentation information (information provision step S25). .
In this way, the designer can actively obtain information regarding design defects from the design support system.

Further, the design support system checks the design status when the work monitoring means 70 detects that the designer is performing design work that is likely to cause defects, or at a predetermined timing (design status confirmation step S26).
When the design status confirmation step S26 is executed, the design support system uses the knowledge control means 50 to collate the production management database 21 and confirm the task corresponding to the design status from the product information and process information (task confirmation step). S22). Further, the knowledge control means 50 refers to the design knowledge base 30 and collates knowledge information corresponding to the design situation and the task (knowledge collation step S12). Furthermore, the knowledge control means 50 narrows down the presented information by taking into account the task in relation to the design situation through comparison (presentation information narrowing step S24), and determines whether there is a problem with the design work.
If the knowledge control means 50 determines that there is no problem with the design work, the work monitoring means 70 continues monitoring.
On the other hand, if the knowledge control means 50 determines that there is a problem with the design work, it uses the information provision means 40 to present the problem location and its correction plan to the designer as presentation information (information provision step S25). . At this time, it is preferable that the information providing means 40 displays the presentation information as a pop-up on the display screen of the CAD system 10. Thereby, it is possible to reduce the possibility that the designer will overlook the presented information and create a drawing containing defects. Further, it is more preferable to highlight the presentation information using color, shape, and movement on the screen.
In this way, the knowledge control means 50 extracts the knowledge information based on the data of past defect cases stored in the design knowledge base 30 as needed, so that the designer can create drawings containing defects. You can reduce the number of mistakes you make. This reduces rework and rework at the manufacturing site, shortens manufacturing time, meets delivery deadlines, and reduces costs.

Note that at least the above-described design status confirmation step S26, task confirmation step S22, knowledge collation step S12, presentation information narrowing down step S24, and information provision step S25 can also be executed by a computer as a design support program.

FIG. 6 is a management flowchart of the design process manager.
The design support system also transmits the presentation information presented to the designer to the design process management terminal 120 used by the design process manager using the information providing means 40. The presentation information is displayed on the display screen of the design process management terminal 120. This allows the design process manager to obtain the design status of each designer and calculate the remaining man-hours until design completion based on the information presented to each designer by the design support system and the modifications made by each designer. (design status acquisition step S31).
In addition, the design process manager can visualize and understand each designer's work proficiency level and work delays from the number of times information is presented to each designer from the design support system (visualization step S32). .
The design process manager determines whether the design will be completed by the deadline based on the grasped design status of each designer (deadline delay determination step S33).
If the design process manager determines in the deadline delay determination step S33 that the design will be completed by the deadline, the design process manager continues management.
On the other hand, if the design process manager determines in the deadline compatibility determination step that the design will not be completed by the deadline, the design process manager modifies the schedule regarding the design (schedule modification step S34) and continues management. In addition, the design process manager can perform management such as changing designers, adjusting the designer's workload, and increasing the number of designers in order to comply with the design schedule. If there is a modification to the design schedule, it is reflected in the tasks in the production management database 21 after adjustment. In this case, the task is modified within the production management database 21, but modification from outside is also possible.
In this way, the design process manager can use the design support system to perform the management work of the design process manager.
Although the information providing means 40 can notify the presentation information by e-mail, chat, etc., it is preferable to display the presentation information as a pop-up on the display screen of the design process management terminal 120. This can reduce the chance that the design process manager will overlook the presented information. In addition, the design process manager can easily check the design status of each designer.

FIG. 7 is a diagram showing a state in which the design support system is distributed and installed at multiple locations.
The CAD system 10, the production management database 21, the field event database 22, the design knowledge base 30, and the information providing means 40 are connected via a communication line such as the Internet. The knowledge control means 50 performs control via a communication line.
By connecting each device with a communication line, the design support system can be used to provide presentation information according to the design situation even from a location far from each device.

The CAD system 10, the production management database 21, the field event database 22, and the information providing means 40 are installed at companies A, B, and C, which are in similar industries and manufacture products to order. Further, the design knowledge base 30, the knowledge control means 50, and the knowledge extraction means 60 are installed at the D organization, which provides information about products to each company.
Organization D uses the knowledge extraction means 60 to extract data from the field event database 22 and production management database 21 installed in each company, extracts knowledge, and sends the design knowledge to the design knowledge base 30 to create the design knowledge base 30. To construct. This makes it possible to collect on-site defects caused by design in the shipbuilding industry from multiple companies, which is limited to one company, and makes the knowledge in the design knowledge base 30 more useful.
When each company designs a product to be manufactured to order, it can access the shared design knowledge base 30 installed at Agency D and receive design support.
When using this design support system, the designers of each company transmit the obtained access keys to the server including the design knowledge base 30, knowledge extraction means 60, and knowledge control means 50 of institution D. The server authenticates the designer based on the received access key, and once the authentication is completed, the user can use the design support system.
After authentication, the design support system is used in the same manner as described above. It is also possible to charge for use and change the fee structure depending on the level of knowledge provided by each company.
In this way, by installing the design knowledge base 30 and the knowledge control means 50 in separate locations from the CAD system 10, production management database 21, and information provision means 40 and connecting them via communication lines, each company can individually design It is not necessary to install the knowledge base 30, the knowledge control means 50, etc., and the installation cost and installation space can be reduced.
In addition, the design knowledge base 30 extracts knowledge based on events that occur during on-site work that corresponds to the design of multiple products. Since the design knowledge base 30 can be constructed, the knowledge in the design knowledge base 30 can be made more useful.
Note that the knowledge extraction means 60 placed in institution D can also be placed in each company, and only the knowledge extraction results can be sent to institution D. Further, the representative company of Company A, Company B, and Company C may have the function of the D institution. In addition to this, remote installation of any combination of components of the design support system is possible.

The present invention can be effectively utilized in industries where products are manufactured to order, such as shipbuilding, civil engineering, and architecture.

10 CAD system 21 Production management database 22 Site event database 30 Design knowledge base 40 Information provision means 50 Knowledge control means 60 Knowledge extraction means 70 Work monitoring means 80 Reception means 90 Communication means 120 Design process management terminal S12 Knowledge collation step S22 Task confirmation Step S24 Presentation information narrowing step S25 Information provision step S26 Design status confirmation step

Claims (18)

A design support method for industries that manufacture one or a small number of products to order,
a design status confirmation step of confirming the design status of the product designed using a CAD system;
a task confirmation step of checking a production management database to confirm tasks corresponding to the design situation;
a knowledge matching step of matching the design situation with a design knowledge base corresponding to the task;
a presentation information narrowing step of narrowing down presentation information in consideration of the task for the design situation by collating the design knowledge base ;
an information providing step of providing the narrowed-down presentation information corresponding to the design situation ;
The design knowledge base identifies defect situations by extracting knowledge through machine learning or statistical processing based on the tasks and events occurring in the field work corresponding to the design situation, and uses ontology technology to identify the defect situations. A design support method characterized in that the design information is linked to the design situation . 2. The design support method according to claim 1 , wherein the events occurring during the on-site work are accumulated based on a result of communication with a design department that performs the design. 3. The design support method according to claim 1 , wherein the design status is confirmed based on monitoring of the design work using the CAD system. 4. The design support method according to claim 3 , wherein the work monitoring uses at least one of an operation log of the CAD system and a sensor log of a sensor installed in an IoT terminal. 5. The design support method according to claim 1 , wherein the verification of the design knowledge base is performed by receiving an application from a designer who designs using the CAD system. The design support according to any one of claims 1 to 5 , wherein the presentation information is displayed as a pop-up on at least one of a display screen of the CAD system and a display screen of a design process management terminal. Method. When changing the design of the product based on the presented information, the changed content is stored in at least one of the production management database and the field event database that stores the events that occurred in the field work corresponding to the design. The design support method according to any one of claims 1 to 6 , characterized in that the design support method is reflected. The design status confirmation step, the task confirmation step, the knowledge collation step, the presentation information narrowing down step, and the information provision step in the design support method according to any one of claims 1 to 7 are performed on a computer. A design support program that is characterized by being executed. A design support system for industries that manufacture one or a small number of products to order,
a CAD system for designing the product; a production management database for managing tasks; a design knowledge base; knowledge control means that collates a management database to collate the design knowledge base corresponding to the task, and transmits the presented information narrowed down to the design situation by considering the task by collating the design knowledge base; In preparation, the design knowledge base performs machine learning or statistical processing to extract knowledge based on the tasks and events occurring in the field work corresponding to the design situation, identifies the defect situation, and uses ontology technology to identify the defect situation. A design support system, characterized in that the design support system is linked to the design situation using the above . 10. The design support system according to claim 9 , wherein the events occurring in the on-site work are accumulated based on a result of communication using communication means with the design department that performs the design. 11. The design support system according to claim 9 , wherein the design status is confirmed using a work monitoring means for monitoring the design work status of the CAD system. The design support according to claim 11 , wherein the work status monitoring by the work monitoring means is performed using at least one of an operation log of the CAD system and a sensor log of a sensor installed in an IoT terminal. system. The design according to any one of claims 9 to 12 , wherein the design knowledge base is checked through a reception means that receives an application from a designer who designs using the CAD system. support system. Any one of claims 9 to 13 , wherein the information providing means pops up the presented information on at least one of a display screen of the CAD system and a display screen of a design process management terminal. The design support system described in Section. When changing the design of the product based on the presented information, the knowledge control means transmits the changed contents to the production management database and to a site that stores the events occurring in the site work corresponding to the design. 15. The design support system according to claim 9 , wherein the design support system is reflected in at least one of the event databases. The CAD system, the production management database, the design knowledge base, and the information providing means are connected via a communication line, and the knowledge control means performs control via the communication line. The design support system according to any one of claims 9 to 15 . 17. The design support system according to claim 16 , wherein the design knowledge base and the knowledge control means are installed in a location isolated from the CAD system, the production management database, and the information providing means. Referring to claim 9 or claim 10 , the design knowledge base is one in which the knowledge is extracted based on the events occurring in the field work corresponding to the designs of a plurality of products. The design support system according to claim 17 .