JP7159116B2 - QUALITY CONTROL SUPPORT METHOD, QUALITY CONTROL SUPPORT SYSTEM AND QUALITY CONTROL SUPPORT DEVICE - Google Patents

Description

The present invention relates to a quality control support method, a quality control support system, and a quality control support device.

Along with the globalization of the economy, supply chains for various products are expanding on a global scale and tend to become more multi-layered. Under such circumstances, product quality control is an important issue, and various approaches have been proposed.

As one of such approaches, for example, a mill sheet original generation step of generating a mill sheet electronic file as the original, and the same quality information as the quality information recorded in the mill sheet electronic file as the original, and displaying the quality information and a viewing electronic file generation step of generating a viewing version of the mill sheet electronic file that can only be printed and cannot be stored, transferred, or modified; and sending the viewing version of the mill sheet electronic file to an external terminal connected to a network has proposed a mill sheet viewing method (see Patent Document 1), which includes an electronic file disclosure step of storing in an area of a recording medium accessible via the network.

JP 2016-197463 A

According to the conventional technology, material certificates (mill sheets) and inspection reports, which were previously individually managed in paper form, are managed as electronic files, making it possible to view them via a network. Verification man-hours can be reduced.

However, with the above-mentioned technology, it is possible to efficiently and accurately identify defects in products and parts that occur somewhere in a wide and multi-layered supply chain and the extent of their impact, and share them without falsification among related parties. No response has been made. In particular, it can be said that such a situation is likely to lead to a big problem these days, when quality fraud in products and inspections has become a social problem.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a technique for managing information on product defects that occur in a supply chain without falsification, efficiently specifying the range of influence of the defect, and enabling sharing among related parties.

The quality control support method of the present invention for solving the above problems is a distributed ledger system that constitutes a business network by a business operator. and storing it in a distributed ledger after consensus building with other nodes; Among the business operators in the business network, the business operators who use the target object or target processing of the defect or change are linked in the business network based on the information on the production or transaction held in the distributed ledger and a process of outputting at least the information of the identified business operator as information on the range of influence of the defect or change.

In addition, the quality control support system of the present invention is a distributed ledger system that constitutes a business network of businesses, and holds at least a distributed ledger that stores transactions including information on each case of manufacturing or trading in the business. and if the content of any transaction stored in the distributed ledger contains predetermined information regarding a manufacturing defect or change, among the operators in the business network, the object of the defect or change or A business operator that uses the target processing is identified according to the connection between the business operators in the business network based on the information on the manufacturing or transaction held in the distributed ledger, and at least the information on the identified business operator is specified. , and an arithmetic device for outputting information on the range of influence of the defect or change.

In addition, the quality control support device of the present invention is at least one of the nodes of the distributed ledger system that constitutes the business network of the business operator, and receives transactions containing information on each case of manufacturing or trading at the business operator. a storage device that holds at least a distributed ledger to be stored; Identify the business operator using the defective or changed object or object processing according to the connection between the business operators in the business network based on the information on the production or transaction held in the distributed ledger, and at least the above and an arithmetic device that outputs information about the specified business operator as information about the range of influence of the defect or change.

According to the present invention, it is possible to manage information about product defects that occur in the supply chain without falsification, efficiently specify the range of influence of the defect, and share the information among the parties involved.

1 is a network configuration diagram including a quality control support device of this embodiment; FIG. It is a figure which shows the hardware structural example of the quality control assistance apparatus of this embodiment. It is a figure which shows the functional structural example of the quality control assistance apparatus of this embodiment. It is a figure which shows the data structural example of the transaction information of this embodiment. It is a figure which shows the data structural example of the test|inspection information of this embodiment. It is a figure which shows the example of a data structure of defect / defect information of this embodiment. It is a figure which shows the data structural example of the company information of this embodiment. It is a figure which shows the data structural example of BOM information of this embodiment. It is a figure which shows the data structural example of the production performance information of this embodiment. It is a figure which shows the data structural example of the personnel information of this embodiment. It is a figure which shows the flow example of the quality-control assistance method in this embodiment. It is a figure which shows the example 1 of a screen in this embodiment. It is a figure which shows the example 2 of a screen in this embodiment. FIG. 11 is a diagram showing a screen example 3 according to the embodiment; FIG. 11 is a diagram showing a screen example 3 according to the embodiment;

--- Prerequisite technology ---

Blockchain (hereinafter referred to as “blockchain”) is a technology that replaces transactions that have traditionally been carried out via reliable centralized institutions such as financial institutions and governments with direct transactions by P2P (Peer to Peer) between users. Distributed ledger technology using BC) has emerged.

The main features of current distributed ledger technology are: (1) Transactions between participants in a distributed ledger system are settled by consensus building and approval by (arbitrary or specific) participants rather than by a centralized authority. (2) Collecting multiple transactions as blocks, recording them in a chain on a distributed ledger called a blockchain, and performing hash calculation on consecutive blocks to make falsification virtually impossible; (3) Participation By sharing the same ledger data among all participants, it is possible for all participants to confirm transactions.

Due to the above characteristics, distributed ledger technology using BC is widely used in a wide range of fields such as finance and manufacturing as a mechanism for managing and sharing reliable data and executing and managing transactions based on contracts. application is being considered.

As one such application example, in order to apply distributed ledger technology to complex transaction conditions and various applications, not only transaction data but also transaction conditions are described on the distributed ledger, that is, smart contracts (hereinafter referred to as logic). A technology has also been proposed that can also manage SC).

In addition, a “consortium-type” distributed ledger platform has been proposed, in which only computers authorized by a specific group or person, such as a consortium in a specific industry or multiple companies related to a supply chain, can approve transactions. ing. In such a consortium-type distributed ledger platform, there is a management body that selects approvers, so there is an advantage that the speed of transaction approval can be increased.

As a prior art related to the above SC, a technology related to a distributed ledger platform having an SC execution function has been proposed. In such a distributed ledger platform, transactions (hereinafter also referred to as TX) are accepted while consensus is formed between nodes at a predetermined consensus level, TX is executed at each node, and by holding the execution results of the TX, multiple Information (ledger) is shared on the node. It also has an SC execution function for executing a predetermined logic for the above-mentioned TX.

In a distributed ledger system, a node called a miner judges the validity of transaction data, that is, the transaction data, on the P2P network, and performs confirmation processing by calculating a specific hash value called proof of work. there is Transaction data determined in this way is grouped into one block and recorded on a distributed ledger called a blockchain. This distributed ledger is equally provided in each node, and the distributed ledger is kept synchronized between nodes.
It is assumed that the quality control support device of this embodiment is operated based on such a technical background.
--- Network configuration ---

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a network configuration diagram including a quality control support device 100 of this embodiment. The quality control support device 100 shown in FIG. 1 is a computer device that manages defect information of products, etc. occurring in the supply chain without tampering, efficiently identifies the range of influence of the defect, and enables sharing among related parties. .

FIG. 1 is a diagram showing a network configuration example including a quality control support device 100 according to this embodiment. Here, as an example, the quality control support method of the present invention is applied to a business network that forms a supply chain accompanying product manufacturing, and based on information on defects, defects, changes, etc. of parts etc. that occur in the supply chain, quality The explanation shall proceed assuming a situation in which management support is provided.

The quality control support system 10 exemplified in FIG. 1 is a distributed ledger system, and is composed of one or more quality control support devices 100, which are distributed ledger nodes of each operator, that is, a company. Also, the quality control support devices 100 of these companies are connected to the network 1 through physical communication lines and are capable of communicating with each other.

Note that the manufacturing management device 200 is installed in a company that manufactures parts, products, etc. among the companies. The manufacturing control device 200 distributes the information on the manufacturing results in the manufacturing line to the quality control support device 100 at any time or at fixed time intervals.

Although not shown, the quality control support system 10 can also include one or more client nodes. This client node is a terminal operated by a person in charge of each company, and accepts input of various information that will be information resources such as inspection information 162 and defect/defect information 163, which will be described later, and uses this as a transaction as a distributed ledger system. Issued to the quality control support system 10 .
--- Hardware and functional configuration ---

FIG. 2 shows the hardware configuration of each device included in the quality control support system 10 of this embodiment. The physical entities of the quality control support device 100, which is the distributed ledger node, the manufacturing control device 200, and the client node are, as illustrated in FIG. , an input device 104, an output device 105, and a communication device 106.

Among these, the processor 101 is an arithmetic device that reads out a program stored in the auxiliary storage device 103 into the main storage device 102 and executes it, performs overall control of the device itself, and performs various determinations, calculations, and control processes.
Also, the main memory device 102 is a memory device configured with a volatile memory element such as a RAM.

Also, the auxiliary storage device 103 is a storage device configured with an appropriate non-volatile storage element such as an SSD (Solid State Drive) or a hard disk drive.
The input device 104 is a device such as a keyboard or mouse that receives key input or voice input from the user.
The output device 105 is a device such as a display that displays data processed by the processor 101 .
Also, the communication device 106 is a network interface card that connects to the network 1 and handles communication processing with other devices.

The auxiliary storage device 103 described above stores at least the distributed ledger 150 and the database 125 in addition to the program for implementing the necessary functions of the quality control support device 100 of this embodiment. The specific data configuration of these will be described later.

The quality control support device 100 having such a hardware configuration has the functional configuration illustrated in FIG. The quality control support device 100 has a data processing section 1011 and a storage section 1031 . Among these, the data processing unit 1011 is a functional unit implemented by the above-described processor 101 executing a program. The storage unit 1031 is a predetermined storage area secured in the above-described auxiliary storage device 103 and a data group stored therein.
The data processing unit 1011 described above includes a registration unit 110 , an evaluation unit 111 , an analysis unit 112 , a result display unit 112 , an order placement/order processing unit 114 , and an acceptance inspection unit 115 .

The registration unit 110 registers transactions issued from one of the distributed ledger nodes in the distributed ledger system, that is, the quality control support device 100 (e.g., transactions related to defects, defects, changes, etc. related to products, parts, processes, and various judgments related to them). results, transaction information, inspection information, company information, etc.) are registered in the distributed ledger 150 through predetermined consensus building. The registration unit 110 also stores the values of predetermined items in the state information 160 among the information included in the transaction stored in the blockchain 151 of the distributed ledger 150 .

In addition, the evaluation unit 111 is directly related to the target object indicated by the defect/defect information 163, the target process on the supply chain, that is, the member, process, and , whether there are any changes (at any company in the supply chain) to such materials or processes.

Further, the analysis unit 112 analyzes the defect/failure and the range of influence of the change according to the configuration of the supply chain, based on the evaluation result of the evaluation unit 111 described above. Note that the analysis unit 112 provides the result of the analysis described above to the registration unit 110 and causes the distributed ledger 150 to be registered in the blockchain 151 through transaction issuance.

Further, the result display unit 113 outputs the analysis result by the analysis unit 112 to the output device 105, another quality control support device 100 via the communication device 106, or a predetermined client node.

The order placement/placement processing unit 114 processes orders placed/received for products, parts, or processes such as processing thereof between companies on the supply chain described above. Note that the ordering procedure unit 114 provides the processing result of the above-mentioned ordering and receiving to the registration unit 110, and causes the distributed ledger 150 to be registered in the block chain 151 through the transaction issuance.

Also, the acceptance inspection unit 115 performs a predetermined acceptance inspection process for the target object and target processing for which the above-described order acceptance/order processing unit 114 has received and placed an order. The acceptance inspection process itself may be executed by the person in charge of the company, and the acceptance inspection unit 115 may have a function of receiving the input of the acceptance inspection result. Also, the acceptance inspection unit 115 provides the result of the acceptance inspection described above to the registration unit 110, and causes the distributed ledger 150 to be registered in the blockchain 151 through transaction issuance.
--- Data structure example ---

Next, data used by the quality control support device 100 of this embodiment will be described with reference to FIGS. 4 to 10. FIG. Note that the storage unit 1031 includes the distributed ledger 150 and the database 125 as illustrated in FIG. Distributed ledger 150 also includes blockchain 151 and state information 160 .

First, the configuration of the distributed ledger 150 included in the quality control support device 100 will be described. In distributed ledger management using blockchain 151, multiple transactions issued and agreed upon within a certain period of time are collected as blocks, and each block has a hash value of the previous block, so each block is managed in a daisy chain. do.

When such management is performed, if the value of the previous block changes even by 1 bit, the hash values of all subsequent blocks will change. Therefore, tampering with the distributed ledger 150 is difficult. Such a blockchain 151 is a series of blocks. Each block also contains transaction information for smart contract deployment, execution, or either. Each block also contains a hash value of the previous block and a hash value generated from state information described later. With the data structure described above, deployment and execution of smart contracts are managed as a chain of data in the blockchain.

Configuration examples of the state information 160 managed by the distributed ledger 150 are shown in FIGS. In the distributed ledger management using the blockchain 151, the (latest) state (for example, in the case of virtual currency, it is the balance of the account, and in the case of this embodiment, transaction information, inspection information, defect / defect information , and company information), the blockchain 151 must be traced. However, since this results in poor processing efficiency, there is a method of caching the latest state information 160 obtained from each block constituting the block chain 151 separately from the block chain 151 .

Also in this embodiment, it is assumed that the latest state information 160 is held in the distributed ledger 150 . State information 160 in this embodiment includes transaction information 161 , inspection information 162 , defect/defect information 163 , and company information 164 .

Among them, as shown in FIG. 4, the transaction information 161 includes, as a key, a transaction ID that uniquely identifies a transaction between companies on the supply chain. A collection of records that associate values such as delivery date, production number, and inspection data. Among these, the value of the inspection data is common to the ID of the inspection information 162 .

Also, as shown in FIG. 5, the inspection information 162 includes, as a key, an inspection ID that uniquely identifies the quality inspection of the goods (products and parts) handled in the transaction indicated by the transaction information 161 described above. , inspection certificate ID, effective date, and issuer. The file indicated by the value of the inspection result column or the file indicated by the inspection certificate ID can be assumed to be quality information in transactions, such as material certificates and inspection reports.

In addition, as shown in FIG. 6, the defect/failure information 163 is targeted with a defect ID that uniquely identifies a defect or defect of a product or part that has occurred or been identified in a company on the supply chain as a key. A record that associates values such as product ID/name, serial number, date of occurrence, place of occurrence, number of cases, severity, symptom classification, symptom details, cause classification, cause details, cause component, countermeasure status, and registrant It is an aggregate.

In addition, as shown in FIG. 7, the company information 164 is information of each company that operates the quality control support device 100, which is a distributed ledger node in the supply chain. A collection of records that associate values such as location, owned facilities, and number of employees.
On the other hand, database 125 included in storage unit 1031 includes BOM information 126 , manufacturing performance information 127 and personnel information 128 .

Of these, the BOM information 126 has the same data structure as a general BOM, as exemplified in FIG. (Information on the equipment used in the production line is separately managed so that it can be referenced at any time), material, and quantity.

9, the manufacturing performance information 127 is information on the performance of manufacturing parts and products by companies on the supply chain using predetermined materials and equipment. is a set of records consisting of data such as the material used, the manufacturing number of the material, the quantity, the equipment, the person in charge, and the manufacturing date.

10, the personnel information 128 is personnel information managed by each company on the supply chain described above. , and permissions.
--- Flow example ---

The actual procedure of the quality control support method according to this embodiment will be described below with reference to the drawings. Various operations corresponding to the quality control support method described below are implemented by a program that the quality control support apparatus 100 reads out to a memory or the like and executes. This program is composed of codes for performing various operations described below.

FIG. 11 is a diagram showing a flow example of the quality control support method according to this embodiment. Here, first, a person in charge of one of the companies on the supply chain described above, for example, operates an appropriate client node to store information on defects and defects that occur in products and parts manufactured on the company's manufacturing line. Assume a situation in which data is transmitted to the quality control support device 100, which is a node.

As for the defect or defect information, it can be assumed that the person in charge acquires defect information from the manufacturing control device 200, or that the information is recognized and acquired from an inspection certificate issued by an inspection agency, an inspection department, or the like. (Of course, it is not limited to this). The procedure for recognizing and acquiring such information and transmitting it to the quality control support device 100 is the same for other information to be registered in the blockchain 151 of the distributed ledger 150 (for example, information regarding changes in facilities).

It is assumed that the quality control support device 100 distributes, for example, the defect/defect registration screen 1100 shown in FIG.

A defect/defect registration screen 1100 illustrated in FIG. 12 includes input interfaces 1101 and 1102 for registration type and report number, and an input interface 1105 for specific information on the defect/defect.

Among these, the input interface 1105 for defects/defects includes the product ID, product name, serial number, date of occurrence, place of occurrence, number of cases, severity, symptom classification, symptom details, cause classification, and cause details of the product in which the defect or defect occurred. , cause member, countermeasure status, and registrant.

In addition, a pull-down menu 1106 for accepting selection of the type of symptom is arranged in the symptom classification field. Similarly, in the cause classification column, a pull-down menu 1107 for receiving type selection regarding the cause classification of the symptom is arranged.

The above-mentioned person in charge inputs or selects information about the relevant event through the input interfaces 1101 to 1107 and finally clicks the registration button 1108 .

Therefore, the quality control support device 100 acquires defect/defect information via the defect/defect registration screen 1100, and issues a transaction including this via the network 1 (s1).

As a result, the quality control support device 100 executes a predetermined consensus building process regarding the transaction with the quality control support device 100 of another company that has received the transaction, and the blockchain 151 of the distributed ledger 150 (s5).

The quality control support device 100 also stores the defect/defect information 163 of the state information 160 when registering defect/defect information in the block chain 151 .

Subsequently, the quality control support device 100 distributes the influence range analysis screen 1200 illustrated in FIG. The selection is accepted (s10).

An influence range analysis screen 1200 shown in FIG. 13 is an interface for displaying a defect/defect registration list 1201 extracted from the defect/defect information 163 by the quality control support apparatus 100 and defect information selected by the person in charge from the list. 1202 , an analysis range designation interface 1203 , and a specification check designation interface 1204 .
Among these, the analysis range specification interface 1203 is a radio button that allows the person in charge to select whether only the direct influence range or the indirect influence range is included.

The above-mentioned direct influence range is a population of the companies that provided the parts subject to the defect or defect and the other companies to which the parts subject to the defect or defect are provided in the supply chain described above.

On the other hand, the scope of indirect impact is when, in the above-mentioned supply chain, among the different parts provided by the company that provided the defective or defective parts, the same changes were made to the parts used or the manufacturing equipment as the above-mentioned target parts. To the extent that companies that provide parts and companies that do not provide the above-mentioned target parts have made changes similar to the changes in materials used and manufacturing equipment at the companies that provided the above-mentioned target parts. be.

A specification check specification interface 1204 is a radio button that allows the person in charge to select whether or not it is necessary to check whether the quality deteriorated due to the defect satisfies the specification of the product using the part or the like.

The quality control support device 100 identifies a directly related member based on the defect information selected in step s10 (s11). In this case, the quality control support device 100 identifies the relevant product and its material from the BOM information 126 using identification information such as the product ID indicated by the defect information as a key, and uses the manufacturing number of the relevant product and information on the relevant material as a key. The manufacturing performance information 127 specifies information such as the company, equipment, and person in charge of manufacturing. Also, the quality control support device 100 collates the information specified here with the transaction information 161 to specify the actual transaction relationship and its contents on the supply chain.

The quality control support device 100 sequentially executes such processing until the series of transaction relationships in the transaction information 161 is exhausted, and identifies information on components (or their manufacturing companies, etc.) directly related to the target of the defect information described above. .

Based on the information of the directly related parts specified in s11, the quality control support device 100, for example, the inspection target product indicated by the inspection information 162 or the It is specified from the information of the device change check (for example, it is assumed that the inspection result file contains the relevant information), and the presence or absence of the change is determined (s12).

As a result of the above determination, if it is found that there is no change in the materials and equipment used in each company related to the target of the defect information (s12: NO), the quality control support device 100 shifts the process to s17. .

On the other hand, as a result of the determination described above, if it is found that any of the companies related to the target of the defect information has changed the materials or equipment used (s12: YES), the quality control support device 100 first , companies that do not have this change are excluded in advance from the scope of influence, and the scope of influence is narrowed down (s13).

Subsequently, the quality control support apparatus 100 confirms that the person in charge has selected "direct influence range only" or "includes indirect influence range" in the analysis range specification interface 1203 on the influence range analysis screen 1200. (s14).
As a result of the above determination, if the selection of the person in charge is "direct influence range only", the quality control support device 100 shifts the process to s17.

On the other hand, as a result of the above determination, if the selection of the person in charge is "includes the range of indirect influence", the quality control support device 100 determines whether the change relates only to the target of the defect information. (s15). At the time of this determination, the quality control support device 100 determines that the change information is a specific person (identified by the manufacturing performance information 127 or the personnel information 128) of the company involved in the target process of the defect information, or the company's unique facilities and equipment. (specified in the equipment column of the manufacturing performance information 127).

As a result of the above determination, if the change is related only to the target of the defect information (s15: YES), the quality control support device 100 shifts the process to s17.

On the other hand, as a result of the above determination, if the change is not related only to the target object (or target process) of the defect information (s15: NO), the quality control support device 100 determines that the change is not included in the supply chain. of the companies that are the same or similar with respect to at least one of the target object and the target process are identified as information such as products, materials, and equipment indicated by the transaction information 161, the manufacturing performance information 127, and the company information 164. Based on this, it is specified as an indirect influence range (s16).

Although there is no direct business relationship with companies that are the same or similar with respect to at least one of the above-mentioned target object and target process, for example, the same or similar with respect to changed materials (e.g., the method is the same and the parameters are very Companies that carry out processing, etc. with the same or similar specifications for the same material Example: (The basic functional configuration is the same, but the maximum output is slightly different, etc.) It can be assumed that there was a company that had

Subsequently, the quality control support device 100 determines whether or not the check "yes" is selected in the specification check designation interface 1204 on the influence range analysis screen 1200 of FIG. 13 (s17).

As a result of the above determination, if the person in charge has selected "no" as to whether or not the specification check is necessary (s17: NO), the quality control support device 100 shifts the process to s19.

On the other hand, as a result of the above determination, if the person in charge has selected "yes" regarding the necessity of specification check (s17: YES), the quality control support device 100 The content of the defect or change is collated with the specification information held in the block chain 151 of the distributed ledger 150 or the state information 160 (s18).

In this case, the quality control support device 100 determines whether or not there is a specification problem due to the defect or change. As a result of the determination, if the defect or change may lead to a problem in the specifications, the quality control support device 100 sends a notification requesting countermeasures to, for example, a client node of the company in which the defect or change occurred. It shall be.

Subsequently, the quality control support device 100, out of the companies in the supply chain that have been identified in the steps up to this point, transfers the information of the companies that use the above-described defect or change target object or target process to the defect or Information about the range of influence of the change is output to the client node or the like via the output device 105 or the communication device 106 (s19).

FIG. 14 is a diagram showing an example of a result display screen 1300. As shown in FIG. This result display screen 1300 includes display interfaces for analysis conditions 1301 and analysis results 1302 . Of these, the analysis condition 1301 displays the contents specified and selected by the person in charge on the influence range analysis screen 1200 .

Further, the analysis result 1302 draws a graph 1320 composed of nodes 1310 representing companies in the supply chain and edges 1311 connecting companies according to their business relationships (based on the transaction information 161).

Among the nodes of the graph 1320 described above, the nodes of companies falling under the direct influence range are surrounded by dashed lines 1312 , and the nodes of companies falling under the indirect influence range are surrounded by dashed lines 1313 .

In addition, an edge 1311 connecting nodes 1310 of each company in the graph 1320 additionally displays information on parts and products traded between the companies (eg, part α). Similarly, in the node 1310 of the company that has changed equipment or specifications, information on the change (eg, equipment change) is additionally displayed.

If the person in charge viewing the screen 1300 clicks, for example, the detail button 1304, the quality control support apparatus 100 returns the result display screen 1400 illustrated in FIG. This result display screen 1400 includes an interface 1401 for displaying information about changes in a company that has made changes, and an interface 1402 for displaying an estimated range of influence.

The change information includes information such as the company where the change occurred, the product, the content of the change, the details of the change, the date of the change, and the production number to be changed. As shown in the example of FIG. 15, there is a change in the 'manufacturing equipment' of 'part k' in 'company k', and more specifically, 'change equipment DEF_1 to DEF_up2'. Also, in "Company O", "Material ZO"
It can be seen that the "ingredient change" was performed for

Information on the estimated range of impact includes values such as each company in the range of direct impact and the range of indirect impact, the manufactured product, the causative material, the reason for estimating the impact, and the defect registration.

The reason for estimating the impact is that the target part indicated by the defect information (e.g., part α) is used in the product (e.g., product BB), that is, "direct use of the part" There are things that use materials with points.

Also, in the defect registration, a check is set for products or materials for which the defect/defect information 163 has already been registered. That is, the quality control support device 100 issues a transaction linking the result of each of the determinations described above and the information on the defect or change described above on the network 1, and forms a consensus with the other quality control support devices 100. It shall be stored in the blockchain 151 of the distributed ledger 150 after passing through. This storage is synonymous with registering defective parts and the like.

Although the best mode for carrying out the present invention has been specifically described above, the present invention is not limited to this, and can be variously modified without departing from the scope of the invention.

According to this embodiment, it is possible to manage information about product defects that have occurred in the supply chain without falsification, efficiently identify the range of influence of the defect, and share the information among related parties.

At least the following will be clarified by the description of this specification. That is, in the quality control support method of the present embodiment, when the node identifies a business operator who uses the target object or the target process, the change related to the manufacturing of the defective target object at the business operator involved in the production of the defective target object. information is specified in the distributed ledger, and the business network that uses the target object or target process indicated by the change information is identified in the business network based on the information related to the production or transaction held in the distributed ledger It may be specified according to the chain of business operators.

According to this, based on information on various changes in the manufacturing process and transaction process in which defects (defects, etc.) have occurred, it is possible to estimate the range of influence of the change. As a result, it is possible to manage information on product defects that occur in the supply chain without falsification, to more efficiently identify the extent of the impact of the defect, and to share it among the parties involved.

Further, in the quality control support method of the present embodiment, when the node identifies a business operator using the target object or the target process, the change information is a specific person of the business operator involved in the target process or the business operator concerned. If it relates to a change of a device specific to an operator, the operator shall be identified within the scope of operators directly linked from the operator in the business network, and the information on the change shall be unique to the operator. is the same or similar with respect to the object and/or the target process among the operators included in the business network, if it relates to a change of the object and/or the target process that is not the The operator may be specified within the scope of the operator.

According to this, based on information on various changes in the manufacturing process and transaction process where defects (defects, etc.) occurred, it is possible to estimate the extent of the impact of the change. It is possible to control the range of influence according to whether the change is commonly possible between them. As a result, it becomes possible to manage information on product defects that occur in the supply chain without falsification, to more efficiently identify the extent of the impact of the defect, and to share the information among the parties involved.

Further, in the quality control support method of the present embodiment, when the content of any transaction stored in the distributed ledger includes predetermined information regarding a defect or change in manufacturing, the node Alternatively, the content of the defect or change is collated with the specification information held in the distributed ledger regarding the target process to determine whether there is a problem in the specification due to the defect or change, and as a result of the determination, there is a problem in the specification. In some cases, a process of sending a notification requesting countermeasures to a predetermined device of the business operator in which the malfunction or change occurred may be further executed.

According to this, based on information on the manufacturing process in which defects (defects, etc.) and changes have occurred, it is necessary to identify whether or not the defects or changes have an impact on the specifications, and to request countermeasures (including those that prevent changes). ) can be requested from the business operator where the defect or change occurred. As a result, it is possible to manage information on product defects that occur in the supply chain without falsification, to more efficiently identify the extent of the impact of the defect, and to share it among the parties concerned.

Further, in the quality control support method of the present embodiment, the node issues a transaction linking the determination result and the defect or change information, and stores the transaction in a distributed ledger after forming a consensus with other nodes. Further processing may be performed.

According to this, it becomes possible to manage each information about defects (defects, etc.), changes, and their influence without falsification. As a result, it is possible to manage information on product defects that occur in the supply chain without falsification, to more efficiently identify the extent of the impact of the defect, and to share it among the parties concerned.

1 network 10 quality control support system 100 quality control support device (distributed ledger node)
101 processor 1011 data processing unit 102 main storage device 103 auxiliary storage device 1031 storage unit 104 input device 105 output device 106 communication device 110 registration unit 111 evaluation unit 112 analysis unit 113 result display unit 114 ordering procedure unit 115 acceptance inspection unit 125 database 126 BOM information 127 Manufacturing performance information 128 Personnel information 150 Distributed ledger 160 State information 161 Transaction information 162 Inspection information 163 Defect/defect information 164 Company information 200 Manufacturing control device

Claims (7)

In a distributed ledger system that constitutes a business network of operators, at least one of the nodes
A process of issuing a transaction containing information on each case of manufacturing or trading at the business operator, storing it in a distributed ledger after consensus building with other nodes, and the content of one of the transactions stored in the distributed ledger When it contains predetermined information about a defect or change in manufacturing, the manufacturing or which holds, among each business operator in the business network, a business operator that uses the object or target process of the defect or change in the distributed ledger. A process of specifying according to the chain of business operators in the business network based on information on transactions, and a process of outputting at least the information of the specified business operator as information on the extent of the impact of the defect or change. ,
Quality control support method to perform the node is
When identifying the business operator using the target object or target process, the information on the change related to the manufacturing of the business operator involved in the manufacturing of the target object with the problem is specified in the distributed ledger, and the information on the change is Identify the business operator using the indicated object or object processing according to the connection between the business operators in the business network based on the information on the production or transaction held in the distributed ledger,
The quality control support method according to claim 1, characterized by: the node is
When identifying an entity that uses the subject matter or subject process,
If the information on the change relates to a specific person of a business operator involved in the target processing or a change of a device unique to the business operator, the business operators directly linked from the business operator as a starting point in the business network to the extent that the entity is identified;
If the change information relates to a change in the object and/or the object process that is not operator-specific, then among the operators included in the business network: Identifying said business to the extent that it is the same or similar with respect to at least one;
3. The quality control support method according to claim 2, characterized by: the node is
If the content of any transaction stored in the distributed ledger includes predetermined information regarding a defect or change in manufacturing, the specification information held in the distributed ledger regarding the object or target process of the defect or change includes the defect Or compare the contents of the change to determine whether there is a problem with the specifications due to the defect or change. In response, perform further processing to send a notification requesting countermeasures,
The quality control support method according to claim 1, characterized by: the node is
Further executing a process of issuing a transaction that links the result of the determination and the information of the defect or change, and storing it in a distributed ledger after consensus building with other nodes,
5. The quality control support method according to claim 4, characterized by: A distributed ledger system that constitutes a business network of operators,
a storage device that holds at least a distributed ledger that stores transactions including information about each instance of manufacturing or trading at the business;
If the content of any transaction stored in the distributed ledger contains predetermined information related to a manufacturing defect or change, among the business operators in the business network, a business that uses the target object or target process of the defect or change based on the information related to manufacturing or transactions held in the distributed ledger, identify the business operator according to the connection between the business operators in the business network, and at least the information of the identified business operator A computing device that outputs information about the range of influence by
A quality control support system, comprising: a plurality of information processing devices. At least one of the nodes of the distributed ledger system that constitutes the business network of the operator,
a storage device that holds at least a distributed ledger that stores transactions including information about each incident of manufacturing or trading at the entity;
If the content of any transaction stored in the distributed ledger contains predetermined information related to a manufacturing defect or change, among the business operators in the business network, a business that uses the target object or target process of the defect or change based on the information related to manufacturing or transactions held in the distributed ledger, identify the business operator according to the connection between the business operators in the business network, and at least the information of the identified business operator A computing device that outputs information about the range of influence by
A quality control support device comprising:

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