CN113592378A

CN113592378A - BOM construction method and management system of large complex equipment

Info

Publication number: CN113592378A
Application number: CN202110670750.XA
Authority: CN
Inventors: 韩秀; 蒋越; 彭敏
Original assignee: Nantong Meizhilan Communication Technology Co ltd
Current assignee: Nantong Meizhilan Communication Technology Co ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2021-11-02

Abstract

The invention provides a BOM construction method of large-scale complex equipment and a management system thereof, which are used for efficiently managing the BOM data of the large-scale complex equipment. The management system comprises a plurality of client terminals and a server for uniformly managing data; wherein, the user of each terminal completes BOM related work through an operation interface; the server comprises a plurality of functional modules, stores the data of the BOM, and comprises the codes of the products, the product states and the product associated knowledge; the repeatability of material management is reduced, the effectiveness of BOM management is improved, and the knowledge associated with BOM is better utilized.

Description

BOM construction method and management system of large complex equipment

Technical Field

The invention relates to a BOM structure of large-scale complex equipment, and particularly provides a BOM construction method of large-scale complex equipment and a management system thereof.

Background

The Bill of Materials (BOM) is the most basic information in the system, and is used to describe the component composition of the product and the interrelation between the components, which is the basis of the product information. At present, companies with large complex equipment have the tradition of managing large complex equipment materials, and the management is not good due to large quantity and multiple types of materials, so that the management of the materials is disordered, and troubles are brought to the operation decision of enterprises. The materials have a lot of basic knowledge when leaving the factory, and the knowledge is formed in the using process of the materials, so that the enterprises are greatly lost due to the lack of management of the knowledge.

At present, many scholars and company researchers at home and abroad do much research on BOM management, but the research mainly focuses on organizing and planning enterprise production, cost statistics and the like through BOM structures. And the related achievements of knowledge management and BOM full life cycle management are few when the BOM structure is applied.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a BOM structure for constructing equipment under the conditions of maintenance, repair and operation of large-scale complex equipment and the knowledge management of each node of the BOM structure. The system builds the BOM structure based on the form of service rather than specific products, the invention enhances the universality of the system and improves the compatibility of the system, so the system is more efficiently used.

The technical scheme adopted by the invention for solving the technical problem is as follows: a BOM construction method and a management system thereof for large-scale complex equipment are provided, which are used for the construction of BOM nodes, the binding of BOM node knowledge and the management of BOM node knowledge.

A method for constructing a BOM structure of large-scale complex equipment comprises the following steps:

and S1, establishing a database by taking the basic material information of the large-scale complex equipment as a sample or a template.

Preferably, the model or template of the basic material information of the large-scale complex equipment comprises a material list of a series of related options, each model or template is a selectable sub-component on the material list, each layer of sub-component of the material list is used as one model or template in the database, materials of different models are classified and then modeled, different models are formed in the database, and information searching and data maintenance from the database are facilitated.

And S2, constructing the BOM structure tree.

More preferably, from the perspective of the full life cycle construction of the material, the BOM structure is divided into three state structures, namely a neutral BOM structure, a position BOM structure, an example BOM structure, and the like, wherein the BOM structures in the three states are formed at different stages; the neutral BOM structure is formed at its design stage; the position BOM is formed in the using process of the position BOM, and comprises time information and space information, and the time information and the space information depend on whether the same material is used in different positions or not; the example BOM is completed in the process of position instantiation, and the BOM structure tree is initialized according to the neutral BOM structure at the beginning of establishing the database.

Further, the BOM is divided under the condition that the product structure and the process flow are combined, so that a BOM structure tree is generated, and management is facilitated, for example, the traditional BOM comprises the forms of single-layer expansion, contraction expansion, gathering expansion, single-layer tracking, contraction tracking, gathering tracking and the like; for example, the matrix type BOM is a BOM obtained by merging data of a product series with a large number of general parts, and is mainly used for identifying and combining general parts in a product series; for another example, the comparative BOM is based on a standard product and specifies which parts can be added or removed, and is mainly used to describe the differences between different products; for another example, the modular BOM is constructed according to the requirements of assembling the final product, and different final products can be combined through different module selections, mainly used for complex products which are made of many common parts and have various combinations.

Furthermore, the modular BOM is introduced into the database, a BOM structure is established on the basis of the modular BOM, and the BOM is divided into a neutral BOM structure, a position BOM structure and an example BOM structure according to different module requirements. And in the database, the BOM structure tree is completed by initializing the BOM structure, and the BOM structure tree can be automatically produced by manually adding each node and automatically importing BOM node information for the initialization work of the BOM structure tree.

Preferably, the material is in a neutral BOM structure state when being designed and produced, and the associated knowledge is static knowledge, such as information of design documents, maintenance rules, technical manuals, design drawings and the like; in the using process of the material, according to whether position information needs to be added or not, whether the material is directly instantiated or a production position is taken as material information is judged, and the position BOM is associated with static knowledge, such as material information, assembly information, maintenance process management and the like; after instantiation, dynamic knowledge in the database, such as service history, maintenance history, service cases, status data, etc., is associated with the instance BOM.

And S3, recording the knowledge of each node in the BOM structure tree into a database as a data model.

Preferably, the knowledge of each node in the BOM structure tree is static knowledge, that is, a neutral BOM structure, and includes, but is not limited to, information such as design documents, maintenance procedures, technical manuals, and design drawings.

Further, the tree diagram of the BOM structure is completed through initialization management of the neutral BOM structure, each node of the large-scale complex equipment and the level of the node in the BOM structure are completely represented, and knowledge of the material design stage is stored in a module of the corresponding BOM structure.

And S4, supplementing the data model of the BOM structure of the large complex equipment in the database.

Preferably, the database is continuously updated to adapt to information of a BOM change order, the BOM change order means that materials need to be processed through different procedures in the material circulation process, material information is continuously changed, each change of data such as state information and knowledge information of the materials is recorded in a BOM structure node, information changes of the materials in different states are collected and sorted through an information capturing device and then are additionally recorded in the database, and a tree diagram of a BOM structure in the database is completed.

Further, the function of the information capturing apparatus may be performed by manual observation, such as information that damage of a product, surface collision, and the like can be observed by naked eyes, and information obtained by manual measurement using a portable measuring tool. The information capturing function can be realized by operators, and then the operators can conveniently add, delete, modify and query the BOM structure tree in the database.

Furthermore, for products with high precision and which cannot be identified by visual observation, the function of the information capturing device cannot be realized by visual observation, and detection equipment is required to be used for measurement, such as a profile gauge, a height gauge, an airtight machine and the like, and the detection equipment can be used for detecting size differences which cannot be identified by visual observation after the material is processed, so as to determine whether the material meets the process requirements after the material is processed. It will be appreciated by those skilled in the art that in a broader application scenario, the detection device may be any of the foregoing examples, or may be a detection device determined according to the technical requirements of actual production.

And S5, managing the BOM structure of the large-scale complex equipment by using the digital model in the database.

Preferably, the digital model in the database is divided into material information management and knowledge management for the BOM structure management of the large-scale complex equipment.

More preferably, the material information management system is associated with an order management system, a work order management system, an inventory management system, a production planning system, a purchase management system, and the like.

More preferably, the knowledge management system associates information such as rule knowledge, expert knowledge, and case knowledge. The system comprises an expert system, an intelligent association system, a project management system, an intelligent recommendation system and a statistical ranking system.

Preferably, the static knowledge in the database is divided into three structural models according to the process flow, and the three structural models are respectively a design BOM structure in a design stage, a manufacturing BOM structure in a manufacturing stage, and a maintenance BOM structure in a maintenance stage, the static knowledge associated with the design BOM is information such as a design document, a maintenance rule, a technical manual, a design drawing, and the like, the static knowledge associated with the manufacturing BOM is information such as material information, assembly information, a maintenance process, and the like, and the static knowledge associated with the maintenance BOM in the embodiment includes information such as maintenance history, maintenance case, state data, and the like. During actual production and operation and maintenance service, the information of the neutral BOM structure is used for providing a theoretical basis for the work of maintenance plan formulation, health assessment, fault prediction, case retrieval and the like, in the process of actual production and operation and maintenance service, the initial structure of the maintenance BOM is copied from the neutral maintenance item BOM and obtained, the example maintenance item BOM is obtained through the combination of the neutral maintenance item BOM and the position maintenance item BOM, the example maintenance item BOM of the material is managed to generate an example BOM structure, the example BOM is associated with real-time data, namely dynamic knowledge, and the dynamic knowledge comprises information of rule knowledge, expert knowledge, case knowledge and the like.

The invention has the following beneficial effects: the invention adds the function of knowledge management on the basis of the prior material information management, and completes the guidance of enterprise operation activities by storing rule knowledge, expert knowledge and case knowledge.

Drawings

FIG. 1 is an overall flowchart of a BOM construction method and a management system thereof for large complex equipment according to the present invention;

FIG. 2 is a structural diagram of the relationship transformation and knowledge storage contents of the nodes in the BOM structure tree according to the present invention;

FIG. 3 is a flow chart of the processing procedure for processing three materials according to the present invention;

FIG. 4 is a data model diagram of the BOM changes in the database according to the present invention;

FIG. 5 is a classification diagram of the BOM management system of the present invention;

FIG. 6 is a diagram of an association profile of a material information management system according to the present invention;

FIG. 7 is a graph of the correlation profile of the knowledge management system of the present invention;

fig. 8 is an exemplary schematic diagram of a BOM construction method and a management system thereof for a large complex device according to the present invention.

Detailed Description

In order that the present application may be more clearly understood, further details of the present application will now be described, by way of example, with reference to the accompanying drawings.

The embodiment of the invention provides a BOM construction method of large-scale complex equipment and a management system thereof. Fig. 1 is a flowchart of a BOM construction method and a management system of a large complex device according to the present invention, and as shown in fig. 1, the BOM construction method and the management system of the large complex device include the following steps:

step one, establishing a database by taking basic material information of large-scale complex equipment as a sample or a template.

In this step, the model or template of the basic material information of the large complex equipment contains a bill of materials of a series of related options. Each model or template is an optional sub-part on the bill of materials, and each layer of sub-part of the bill of materials is used as a model or template in the database. And the materials with different models are classified and then modeled, so that different models are formed in the database, and information can be conveniently searched from the database and data can be conveniently maintained.

And step two, constructing a BOM structure tree.

Fig. 2 is a relationship transformation and knowledge storage content of nodes in a BOM structure tree, which manages a neutral material at an initial stage to generate a neutral BOM structure, where the neutral BOM structure associates with static knowledge, and extends downward to obtain a neutral maintenance item BOM on the basis of the neutral material management, and generates a location maintenance item BOM in actual production of a product, where the neutral maintenance item BOM is used as a theoretical basis for process production, and in the actual production process, the neutral maintenance item BOM is copied from the neutral maintenance item BOM to obtain an initial structure of the maintenance item BOM, and an instance maintenance item BOM is obtained by combining the neutral maintenance item BOM and the location maintenance item BOM, and manages the instance maintenance item BOM of the material to generate an instance BOM structure, and the instance BOM associates with real-time status data, that is, dynamic knowledge.

In a preferred embodiment, from the perspective of the full life cycle construction of the material, the BOM structure is divided into three state structures, namely a neutral BOM structure, a position BOM structure, and an instance BOM structure. A BOM structure in three states, which are formed at different stages; the neutral BOM structure is formed at its design stage; the position BOM is formed in the using process of the position BOM, and comprises time information and space information, and the time information and the space information depend on whether the same material is used in different positions or not; the example BOM is completed in the process of position instantiation, and the BOM structure tree is initialized according to the neutral BOM structure at the beginning of establishing the database.

In this step, the BOM is generally called a bill of materials in a narrow sense, that is, a product structure. It is only stated that the physical structure of the material is simply decomposed according to a certain division rule, and the physical composition of the material is described. Generally, the hierarchy is divided and described according to functions; in the broad sense, BOM is a combination of product structure and process flow, which are inseparable. There is no practical meaning to talk about product structure when leaving the process flow. To describe a certain product in manufacturing industry through BOM objectively and scientifically, the structure of the product must be accurately described and embodied by starting from the manufacturing process. Therefore, the BOM is divided under the condition that the product structure and the process flow are combined, so that a BOM structure tree is generated, and management is facilitated. For example, the traditional BOM includes single-layer expansion, contraction expansion, summary expansion, single-layer tracking, contraction tracking, summary tracking, and the like; for example, the matrix type BOM is a BOM obtained by merging data of a product series with a large number of general parts, and is mainly used for identifying and combining general parts in a product series; for another example, the comparative BOM is based on a standard product and specifies which parts can be added or removed, and is mainly used to describe the differences between different products; for another example, the modular BOM is constructed according to the requirements of assembling the final product, and different final products can be combined through different module selections, mainly used for complex products which are made of many common parts and have various combinations.

In a preferred embodiment, each different type of material associates static knowledge and dynamic knowledge. If the material is used as a template in the database, associating the static knowledge; and (4) taking the node information of the material in each process as a position BOM and associating dynamic knowledge. As shown in fig. 3, three materials, namely a material a, a material B and a material C, need to be processed separately in the first process, dynamic knowledge of the material a, the material B and the material C is obtained after processing, then the material a and the material B are assembled in the second process to obtain a material D, the material B and the material C are assembled in the second process to obtain a material E, then the material D and the material E are processed in the third process to obtain dynamic knowledge of the material D and the material E, and finally the material D and the material E are assembled in the fourth process to obtain a material F. Wherein the material A, the material B, the material C, the material D, the material E and the material F are used as templates in a database, and static knowledge is associated; and the node information of the material in each process is used as a position BOM and is associated with dynamic knowledge.

In this step, the dynamic knowledge includes, but is not limited to, station information, operator information, and processing information of the material.

Preferably, the modular BOM is introduced into the database, a BOM structure is established on the basis of the modular BOM, and the BOM is divided into a neutral BOM structure, a position BOM structure and an example BOM structure according to different module requirements. And in the database, the BOM structure tree is completed by initializing the BOM structure, and the BOM structure tree can be automatically produced by manually adding each node and automatically importing BOM node information for the initialization work of the BOM structure tree.

In the step, the material is in a neutral BOM structure state when being designed and produced, and the associated knowledge is static knowledge, such as information of design documents, maintenance rules, technical manuals, design drawings and the like; in the using process of the material, according to whether position information needs to be added or not, whether the material is directly instantiated or a production position is taken as material information is judged, and the position BOM is associated with static knowledge, such as material information, assembly information, maintenance process management and the like; after instantiation, dynamic knowledge in the database, such as service history, maintenance history, service cases, status data, etc., is associated with the instance BOM.

And step three, recording the knowledge of each node in the BOM structure tree into a database as a data model.

In this step, the knowledge of each node in the BOM structure tree is static knowledge, i.e., a neutral BOM structure, including but not limited to design documents, maintenance rules, technical manuals, design drawings, and other information.

In a preferred embodiment, through the initialization management of the neutral BOM structure, a tree diagram of the BOM structure is completed, each node of the large-scale complex equipment and the level of the node in the BOM structure are completely represented, and the knowledge of the material design stage is stored in the module to which the corresponding BOM structure belongs.

And step four, supplementing the data model of the BOM structure of the large-scale complex equipment in the database.

In this step, as shown in fig. 4, data in the database also needs to be managed in the system, and the database needs to be updated continuously to adapt to information of a BOM change order, where the BOM change refers to that materials need to be processed through different processes during the material circulation process, material information changes continuously, and each change of data such as state information and knowledge information of the materials is recorded in a BOM structure node, and information changes of the materials in different states are collected and sorted by an information capture device and then are additionally recorded in the database, so as to complete a tree diagram of a BOM structure in the database.

In a preferred embodiment, the function of the information capturing device may be performed by manual observation, such as information that damage of a product, surface collision, and the like can be observed by naked eyes, and information obtained by manual measurement using a portable measuring tool. The information capturing function can be realized by operators, and then the operators can conveniently add, delete, modify and query the BOM structure tree in the database.

In a preferred embodiment, for products with high precision and which cannot be identified by visual observation, the function of the information capturing device cannot be realized by visual observation, and detection equipment is required to be used for measurement, such as a profile gauge, a height gauge, an air-tight machine and the like, and the detection equipment can be used for detecting size differences which cannot be identified by visual observation after the material is processed, so as to determine whether the material meets the process requirements after the material is processed. It will be appreciated by those skilled in the art that in a broader application scenario, the detection device may be any of the foregoing examples, or may be a detection device determined according to the technical requirements of actual production.

And fifthly, managing the BOM structure of the large-scale complex equipment by using the digital model in the database.

In this step, as shown in fig. 5, management of the BOM structure of the large complex device through the digital model in the database can be divided into material information management and knowledge management.

The material information management association regulates and controls each link of an enterprise in operation through a BOM structure under the maintenance, maintenance and operation states of equipment, judges whether the material meets the requirements in the production process or not by analyzing different performance states and use periods of the material in the whole life cycle, stores the knowledge of the whole life cycle of each node under the BOM structure at a server end in the material information management, and then provides decision support for material purchasing and production plan making according to the information change of the material in the use process.

In a preferred embodiment, as shown in fig. 6, the material information management system is associated with an order management system, a work order management system, an inventory management system, a production planning system, a procurement management system, and the like.

The correlation method between the inventory management system and the material information management system comprises the following steps: when the database is created, basic information of all raw materials, parts, semi-finished products and finished products is required to be compared with product information of an inventory management system, and then a module is established in the database; the combined and disassembled single synchronous transaction database information in the product structure system corresponds to the single synchronous transaction database information, and the low-level code of the product structure system in the computer synchronously updates the low-level code of the product information in the database; and the standard cost operation calculation in the product structure system synchronously updates the fields of the product information in the database, which are related to the standard cost.

The correlation method between the work order management system and the material information management system comprises the following steps: the information of the process route, the flow and the like of the product structure is the source of the work order process; the single step or the tail step of the product structure is the basis of automatic material picking under the condition of no checking work order, and correspondingly, the single step of the product structure is the source for the expansion of the order source-switching work order; and the expansion of the work order material calculation needs to be completed on the basis of a single step or a tail step of the product structure.

The association method between the purchase management system and the material information management system comprises the following steps: and the BOM structure in the database automatically completes the purchasing list of the materials in the purchasing system according to the big data requirement.

The association method between the order management system and the material information management system comprises the following steps: in the raw material purchasing process, the material information management system expands the quotation, order or sales order in detail according to the static information of the product structure, such as CKD or SKD order.

The association method between the production planning system and the material information management system comprises the following steps: the multi-order information of the products in the material information management system provides a basis for the step-by-step development of the production plan; and in the process of developing and calculating the production plan step by step, automatically bringing related requirements of alternative calculation according to the product information in the material information management system.

In a preferred embodiment, the knowledge management system is a man-machine combined management system taking artificial intelligence as a leading part and information technology as a means, and the knowledge resources of various large and complex devices in an enterprise, including explicit knowledge and implicit knowledge, are integrated into a dynamic knowledge system so as to supplement dynamic information in a database.

The knowledge management system associates information such as rule knowledge, expert knowledge, case knowledge and the like.

In a more preferred embodiment, the knowledge management system is subdivided into different modules, as shown in FIG. 7, including an expert system, an intelligent association system, an item management system, an intelligent recommendation system, and a statistical ranking system.

In the step, the expert system is used as a carrier of enterprise intelligence resources, and the expert concentrates the experience and intelligence of the enterprise, and explores and utilizes the experience and intelligence of the expert to better complete the transfer and conversion of knowledge; in the operation process, the staff finds the experts in the system through the expert system and carries out point-to-point question on the experts.

The project management system is a problem to be solved by the project management system, namely how to record and summarize bit information and knowledge generated in the cooperation without the completion of each work from team. In the project management, an operator performs the work of the project full-cycle management, the project creation, the project authorization, the project dynamic recording, the task allocation, the project document summarization and the like through the project management system, and can comprehensively complete the recording and the summarization of the project process.

The intelligent recommendation system is characterized in that after an event occurs, the knowledge management system automatically recommends a corresponding solution or a corresponding expert after big data comparison according to station information, skill information and the solution direction of the event of an operator and the solution of the same case in the past, and can also recommend a corresponding solution department or a corresponding solving person.

The statistical ranking system is characterized in that in the production and circulation processes of materials, product information such as the problem occurrence frequency, the rejection rate, the repair rate and the like of products at different stations is counted and summarized through various information collecting equipment, the information is transmitted into a database, corresponding report information is established in the database, operation data of the system is read through cloud computing, corresponding process defects, equipment problems or staff problems are searched, and the cost is reduced.

The intelligent association system is that different system modules can automatically manage and associate with each other according to knowledge related information of products.

In a preferred embodiment, as shown in fig. 8, the static knowledge in the database is divided into three structure models according to the process flow, and the three structure models are respectively a design BOM structure in the design stage, a manufacturing BOM structure in the manufacturing stage, and a maintenance BOM structure in the maintenance stage, where the static knowledge associated with the design BOM is information such as design documents, maintenance rules, technical manuals, and design drawings, the static knowledge associated with the manufacturing BOM is information such as material information, assembly information, and maintenance processes, and the static knowledge associated with the maintenance BOM in the embodiment includes information such as maintenance history, maintenance cases, and state data. During actual production and operation and maintenance service, the information of the neutral BOM structure is used for providing a theoretical basis for the work of maintenance plan formulation, health assessment, fault prediction, case retrieval and the like, in the process of actual production and operation and maintenance service, the initial structure of the maintenance BOM is copied from the neutral maintenance item BOM and obtained, the example maintenance item BOM is obtained through the combination of the neutral maintenance item BOM and the position maintenance item BOM, the example maintenance item BOM of the material is managed to generate an example BOM structure, the example BOM is associated with real-time data, namely dynamic knowledge, and the dynamic knowledge comprises information of rule knowledge, expert knowledge, case knowledge and the like.

Claims

1. A BOM construction method of large-scale complex equipment comprises the following steps:

building a BOM structure, namely building basic material information based on a material full life cycle method; establishing a basic material information base of large-scale complex equipment, and constructing BOM structures in three states from the full life cycle of materials, wherein the BOM structures are divided into a neutral BOM structure, a position BOM structure and an example BOM structure;

and storing the knowledge of each life cycle of the material in the corresponding BOM structure node.

2. The BOM construction method of large complex equipment according to claim 1, characterized in that:

the BOM structure in the three states is formed in different stages; the neutral BOM structure is formed at its design stage; position BOMs are formed during their use depending on whether the same material is used at different positions; the instance BOM is completed during the location instantiation process.

3. The BOM construction method of large complex equipment according to claim 2, characterized in that:

and (4) completing the tree diagram of the BOM structure by initializing and managing the neutral BOM structure, and completely representing each node of the large-scale complex equipment and the level of the node in the BOM structure.

4. The BOM construction method of large complex equipment according to claim 3, characterized in that:

the step of storing the knowledge of each life cycle of the material in the corresponding BOM structure node comprises the following steps: and storing the knowledge of the full life cycle of each node in the BOM structure tree.

5. The BOM construction method of large complex equipment according to claim 4, characterized in that:

the step of storing the knowledge of each life cycle of the material in the corresponding BOM structure node further comprises the following steps: inputting knowledge of each node in the BOM structure during factory leaving into a database; and recording the design documents, the maintenance rules, the technical manual and the design drawings into a database.

6. The BOM construction method of large complex equipment according to claim 4, characterized in that:

the step of storing the knowledge of each life cycle of the material in the corresponding BOM structure node further comprises the following steps: recording knowledge formed by each node in the localization process under the BOM structure into a database; and inputting the material information, the assembly information and the maintenance process into a database.

7. The BOM construction method of large complex equipment according to claim 6, characterized in that:

the step of storing the knowledge of each life cycle of the material in the corresponding BOM structure node further comprises the following steps: supplementing knowledge formed by each node in the instantiation process under the BOM structure; and recording the maintenance history, the maintenance cases and the state data into a database.

8. A BOM management system of large-scale complicated equipment is characterized in that: comprises that

The building module of the BOM structure builds basic material information based on a material full life cycle method; establishing a basic material information base of large-scale complex equipment, and constructing BOM structures in three states from the full life cycle of materials, wherein the BOM structures are divided into a neutral BOM structure, a position BOM structure and an example BOM structure.

The order management system is used for expanding a quotation, an order or a sales order in detail according to the static information of the product structure in the raw material purchasing process, such as CKD or SKD orders;

the work order management system is used for completing work such as work order opening process and the like through information such as process routes, flows and the like of product structures; the single step or the tail step of the product structure is the basis of automatic material picking under the condition of no checking work order, and correspondingly, the single step of the product structure is the source for the expansion of the order source-switching work order; and the expansion of the work order material calculation needs to be completed on the basis of a single step or a tail step of a product structure;

the stock management system is used for comparing all basic information of raw materials, parts, semi-finished products and finished products with the product information of the stock management system when the database is created, and then building a module in the database; the method comprises the steps that the information of a single synchronous transaction database is disassembled in a product structure system, and correspondingly, low-level codes of the product structure system in a computer synchronously update low-level codes of product information in the database, and fields related to standard cost of the product information in the database are synchronously updated through standard cost operation calculation in the product structure system;

the production planning system is used for realizing the step-by-step expansion of a production plan through the multi-step information of the products in the material information management system; in the process of developing and calculating the production plan step by step, automatically generating related requirements of calculation of the replacement part according to product information in the material information management system;

and the purchasing management system is used for automatically completing a purchasing list of materials in the purchasing system according to the big data requirement of the BOM structure in the database.

The order management system, the work order management system, the inventory management system, the production planning system, the purchase management system and the like are all related to static knowledge in the database, and the order management system, the work order management system, the inventory management system, the production planning system and the purchase management system are collectively called as a material information management system.

9. A BOM management system of large-scale complicated equipment is characterized in that: also comprises

The expert system is used as a carrier of enterprise intelligence resources, and the experts centralize the experience and intelligence of the enterprise, and explore and utilize the experience and intelligence of the experts to better complete the transfer and conversion of knowledge; in the operation process, the staff finds the experts in the system through the expert system and carries out point-to-point question on the experts.

The project management system is used for recording and summarizing the drip information and knowledge generated in the cooperation, and is the problem to be solved by the project management system.

And the intelligent recommendation system is used for automatically recommending corresponding solutions or corresponding experts after big data comparison according to the station information, skill information and solution direction of the event of the operator and the solution of the same case, or recommending corresponding solution departments or solution personnel.

The statistical ranking system is used for counting and summarizing product information such as the problem occurrence frequency, the rejection rate, the repair rate and the like of products at different stations through various information collecting equipment in the production and circulation processes of materials, transmitting the information into a database, establishing corresponding report information in the database, reading operation data of the system through cloud computing, searching corresponding process defects, equipment problems or staff problems, and reducing cost.

And the intelligent association system is used for managing and associating different system modules mutually according to the knowledge related information of the product.

The expert system, the project management system, the intelligent recommendation system, the statistical ranking system, the intelligent association system and the like are all associated with dynamic knowledge in the database, and the expert system, the project management system, the intelligent recommendation system, the statistical ranking system and the intelligent association system are collectively called as the knowledge management system.

10. The BOM management system for large complex devices according to claims 8 and 9, wherein:

the material information management system is used for regulating and controlling each link of an enterprise during operation through a BOM structure under the maintenance, maintenance and operation states of equipment, the materials are in different expression states in the whole life cycle, whether the materials meet the requirements in the production process or not through analyzing the using cycle of the materials, the knowledge of the whole life cycle of each node under the BOM structure is stored at a server end in the material information management, and then decision support is provided for material purchasing and production plan making according to the information change of the materials in the using process;

the knowledge management system is used for completing man-machine combination by taking artificial intelligence as a leading factor and information technology as a means, and supplementing dynamic information in a database by integrating knowledge resources of various large-scale complex equipment in an enterprise, including explicit knowledge and implicit knowledge, into a dynamic knowledge system.

And combining the material information management system and the knowledge management system to form a BOM management system.