Digital production processing management system based on block chain technology

Abstract

The invention discloses a digital production processing management system based on a block chain technology, and the system comprises a user management module, a production plan management module, a raw material management module, a production execution module, a quality detection module, a storage and logistics management module, a block chain basic module, and a data query and tracing module. The user management module creates users and allocates permissions, the production plan management module makes a production plan, the raw material management module carries out purchasing, acceptance and warehousing and records information, the production execution module carries out production according to the plan, and the quality detection module carries out detection in each stage and links results. The storage and logistics management module is responsible for product warehousing, inventory, delivery, transportation and recording, the block chain basic module carries out encryption, consensus and storage guarantee in the whole process, and the data query and tracing module is used for authorized users to query and trace related data at any time. According to the method, encryption, consensus and storage operations are set in each module, so that the difficulty of data cracking and tampering is increased.

Description

Technical Field

[0001] The present invention belongs to the field of blockchain technology, and specifically relates to a digital production and processing management system based on blockchain technology. Background Art

[0002] Blockchain technology is an innovative technology based on decentralized and distributed ledgers. It connects data in chronological order in the form of blocks to build a chain structure. Each block contains transaction or information records within a specific time. It is widely used in many fields such as finance, supply chain, and medical care, promoting digital transformation and innovative development in various industries.

[0003] The existing system is insufficient in the comprehensiveness and strength of data encryption. It only encrypts some key data or specific links, but does not cover all modules and data types, resulting in the risk of non-critical data or unencrypted parts being cracked, which in turn affects the security of the entire system. In addition, there is a risk of single point failure in data storage or the storage architecture is not optimized enough, which makes data vulnerable to factors such as hardware failure and natural disasters during the storage process, causing data loss or damage, and indirectly affecting the integrity and availability of data. Summary of the invention

[0004] The purpose of the present invention is to provide a digital production and processing management system based on blockchain technology in order to solve the problems of insufficient comprehensiveness and strength of data encryption in existing systems, and the risk of single point failure in data storage or insufficient optimization of storage architecture.

[0005] The technical solution adopted by the present invention is as follows:

[0006] Digital production and processing management system based on blockchain technology, including:

[0007] A user management module, which performs identity authentication and authority allocation on users to ensure legal access;

[0008] A production plan management module, which formulates a production plan based on multiple factors and stores it on the blockchain;

[0009] Raw materials management module, which purchases raw materials according to plan, records relevant information and stores them on the blockchain after acceptance;

[0010] A production execution module, which receives production tasks and collects data in real time during the production process and uploads it to the blockchain;

[0011] Quality inspection module, which conducts inspections at key nodes according to standards, uploads results to the chain, and provides timely feedback if unqualified;

[0012] A warehousing and logistics management module, which performs warehousing, outbound and logistics tracking of qualified products and updates blockchain data;

[0013] Blockchain basic module, which provides encryption, consensus and storage guarantee for each module data throughout the process;

[0014] The data query and tracing module is provided with a data indexing mechanism, which is used to locate the required information in the blockchain basic module.

[0015] Among them, the user management module will first create a user account, collect user information and generate an account after multi-factor identity verification, then allocate user permissions based on business roles, and flexibly adjust with job changes. Each adjustment is recorded in the blockchain. When the user logs in and authenticates, the system strictly verifies the identity, creates a secure session, and then records and audits user operations. During the user operation process, the system automatically records detailed logs, encrypts them and stores them in the blockchain for audit tracing. Finally, user account maintenance will be performed, including password management, account deactivation and recovery, and compliance data cleanup. All operations will leave traces on the blockchain.

[0016] Among them, when the production plan management module is running, it first collects and analyzes data, collects data from sales orders, inventory, and equipment management systems, combines market trends to predict demand, and provides a basis for plan formulation. Then, production planning is carried out, production targets are determined based on demand, and a master production plan is generated to clarify products, quantities, and time. At the same time, a material requirement plan is formulated, and the material purchase quantity and time are calculated. Then, plan evaluation and adjustment are carried out, production capacity and resources are evaluated, risks are identified, and response measures are formulated to ensure that the plan is feasible. Then, the plan is reviewed and approved, and the plan is submitted to multiple departments for review and then approved by management. Finally, the plan is executed and monitored, the plan is broken down into tasks and assigned, progress is monitored in real time, deviations are analyzed and adjusted in a timely manner, and the plan is completed on time. All process data is recorded in the blockchain to ensure authenticity and cannot be tampered with.

[0017] Among them, when the raw material management module is working, it first purchases raw materials, selects suppliers based on the production plan, generates purchase orders and records them in the blockchain, closely follows up the procurement process, records logistics information, and then inspects the raw materials. After arrival, quality inspection and quantity verification are carried out, and the results are put on the chain. If qualified, it will proceed to the next step. If unqualified, the return process will be initiated, and then the raw materials will be put into the warehouse, the raw materials will be put into the warehouse, and the inventory information will be updated to the blockchain. At the same time, the storage environment will be monitored and the data will be recorded. During the use of raw materials, the production department submits the use application, and the warehouse will issue it after approval, record the inventory deduction, and then regularly take inventory of raw materials, record the results on the chain, and if there are any differences, analyze the reasons and deal with them. The data of the whole process is based on the blockchain to ensure authenticity, accuracy, and non-tamperability, and raw materials can be traced.

[0018] Among them, in the warehousing and logistics management module, warehousing management includes product entry, inventory management and product exit. When products enter the warehouse, the production department will notify them, and after inspecting the products, the warehouse will be allocated and the inventory will be updated to the blockchain. During inventory management, the environment and inventory status are monitored in real time through the Internet of Things, and regular inventory is taken and abnormalities are warned. When products are leaving the warehouse, they are picked and inspected according to sales or production instructions, and the inventory is updated after they are correct. Logistics management includes logistics order creation, material transportation tracking, and goods delivery and receipt. Logistics orders are created by obtaining outbound product information, and logistics providers are selected. During transportation, the logistics provider uploads the transportation status and location information in real time, records abnormalities, and when the goods are delivered, the consignee inspects and accepts them, and signs for them if they are qualified. The logistics module records the completion information, and the entire data is stored in the blockchain to ensure authenticity and cannot be tampered with.

[0019] Among them, the blockchain basic module includes an account model module, a cryptography module, a network communication module, a consensus algorithm module and a blockchain ledger module. In the blockchain basic module, the account model module first creates identities and sets permissions for participants. After the business link generates data, the cryptography module performs hash operations and digital signatures. Then the network communication module broadcasts the cryptographically processed data between nodes, and each node receives and verifies it. Then the consensus algorithm module enables the nodes to reach a consensus on the validity of the data according to the rules. Finally, the blockchain ledger module packages the consensus data into a new block and updates the ledger. Each node synchronizes the ledger, and each module collaborates to ensure the quality of system data.

[0020] Among them, when the cryptography module performs hash operations, the hash operation first takes the data generated by each module, including production plans and quality inspection results, as input, selects the SHA-256 algorithm, and generates a unique hash value through complex operations to verify data integrity and blockchain. In terms of digital signatures, the data owner encrypts the data or the generated unique hash value with a private key, generates a signature and transmits it with the data. The receiver uses the sender's public key to decrypt the signature to obtain a hash value, and compares it with the hash value calculated by itself for the received data. If they are consistent, it proves that the data is authentic and has not been tampered with.

[0021] Among them, the consensus algorithm module includes the proof-of-work algorithm, the proof-of-stake algorithm and the practical Byzantine fault-tolerant algorithm. In the proof-of-work algorithm, nodes compete for the right to keep accounts based on computing power, which makes it extremely costly to tamper with data, ensures data security and non-tamperability, achieves decentralized consensus, and maintains stable operation of the system. The proof-of-stake algorithm determines the right to keep accounts based on the node's equity, has low energy consumption and high efficiency, and speeds up transaction confirmation. Nodes are more cautious in maintaining the system due to equity mortgage, enhancing security and stability. The practical Byzantine fault-tolerant algorithm quickly reaches consensus through multiple rounds of voting, adapts to the partially trusted alliance chain scenario, can tolerate certain faulty nodes, efficiently processes transactions, and ensures smooth business processes. The combination of the three enhances system security from different angles and prevents data from being tampered with.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0023] In the present invention, encryption, consensus and storage operations are set in each module, and full-module encryption protects data in all directions. Various types of information, from production instructions to product quality inspection reports, are protected by high-intensity encryption algorithms in each link of generation, transmission and storage, which significantly increases the difficulty of cracking. In addition, encryption and consensus of multiple modules are coordinated with distributed storage to build a strict anti-tampering system. Any attempt to tamper with the data needs to break through the security lines of multiple modules at the same time and modify the multi-node storage copies, which is almost impossible to achieve in practice, greatly enhancing the immutability of the data. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the overall structural diagram of the present invention;

[0025] Figure 2 It is a management flow chart of the user management module in the present invention;

[0026] Figure 3 It is a management flow chart of the production plan management module in the present invention;

[0027] Figure 4 It is a management flow chart of the raw material management module in the present invention;

[0028] Figure 5 It is a management flow chart of the warehousing and logistics management module in the present invention;

[0029] Figure 6 This is a flowchart of the operation of the internal modules of the blockchain basic module in the present invention. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] Reference Figure 1-Figure 5 , a digital production and processing management system based on blockchain technology, including user management module, production plan management module, raw material management module, production execution module, quality inspection module, warehousing and logistics management module, blockchain basic module and data query and traceability module. The user management module authenticates the identity of users and assigns permissions to ensure legal access. The production plan management module formulates production plans based on multiple factors and stores them on the chain. The raw material management module purchases raw materials according to the plan, records relevant information and puts them into the warehouse and chain after acceptance. The production execution module receives production tasks and collects data on the chain in real time during the production process. The quality inspection module conducts inspections according to standards at key nodes, and the results are on the chain. If they are unqualified, feedback is given in time. After the products are qualified, they are stored and The flow management module is responsible for warehousing, outbound and logistics tracking and updating blockchain data. The blockchain basic module provides encryption, consensus and storage guarantees for the data of each module throughout the process. The data query and traceability module is equipped with a data indexing mechanism, which locates the required information in the blockchain basic module through the data indexing mechanism. The blockchain basic module provides encryption, consensus and storage guarantees for the data of each module throughout the process, so that each module is protected by a high-intensity encryption algorithm, which significantly increases the difficulty of cracking. The encryption and consensus of multiple modules work together with distributed storage to build a strict anti-tampering system. Any attempt to tamper with the data requires breaking through the security lines of multiple modules at the same time and modifying multi-node storage copies, which is almost impossible to achieve in practice, greatly enhancing the immutability of the data.

[0032] Reference Figure 2 As shown in the figure, the user management module will first create a user account, collect user information and generate an account after multi-factor identity verification. Then, user rights will be allocated according to business roles, and will be flexibly adjusted with job changes. Each adjustment will be recorded in the blockchain. When the user logs in and authenticates, the system strictly verifies the identity and creates a secure session. Then, the user operation will be recorded and audited. During the user operation, the system automatically records detailed logs and encrypts them in the blockchain for audit and traceability. Finally, user account maintenance will be performed, including password management, account deactivation and recovery, and compliance data cleaning. All operations will be recorded in the blockchain. With the entry of new employees or job changes, the administrator will promptly add new users to the system or adjust the existing user rights. Every time a user logs in to the system, the module confirms his identity through multi-factor identity authentication to ensure that only authorized personnel can access the system. At the same time, the module continuously records the user's login time, operation behavior and other information, and encrypts and stores it in the blockchain for audit and traceability.

[0033] Reference Figure 3 As shown in the figure, when the production plan management module is running, it first collects and analyzes data, collects data from sales orders, inventory, and equipment management systems, combines market trends to predict demand, and provides a basis for plan formulation. Then, it formulates production plans, determines production targets based on demand, generates master production plans, clarifies products, quantities, and time, and formulates material requirements plans, calculates material purchase quantities and time, and then evaluates and adjusts plans, evaluates production capacity and resources, identifies risks, and formulates countermeasures to ensure that the plan is feasible. Then, it reviews and approves the plan, submits the plan to multiple departments for review, and then approves it by management. Finally, it executes and monitors the plan, decomposes the plan into tasks and assigns them, monitors progress in real time, analyzes deviations, and makes timely adjustments to ensure that the plan is completed on time. All process data is recorded in the blockchain to ensure that it is authentic and cannot be tampered with. According to factors such as changes in market demand, raw material supply, or equipment failure, authorized personnel adjust the production plan in the system. Each modification is automatically recorded in the blockchain, retaining modification traces and historical versions. At the same time, the module monitors the production progress data fed back by the production execution module in real time. If the actual progress deviates from the plan, it will issue an early warning in time and assist management personnel in taking adjustment measures to ensure that production proceeds as planned.

[0034] Reference Figure 4 As shown, when the raw material management module is working, it first purchases raw materials, selects suppliers based on the production plan, generates purchase orders and records them in the blockchain, closely follows up the procurement process, records logistics information, and then inspects the raw materials. After arrival, it conducts quality inspection and quantity verification, and uploads the results to the chain. If qualified, it will proceed to the next step. If unqualified, the return process will be initiated, and then the raw materials will be put into the warehouse. The raw materials will be put into the warehouse and the inventory information will be updated to the blockchain. At the same time, the storage environment will be monitored and the data will be recorded. During the use of raw materials, the production department submits an application for use, which will be issued by the warehouse after approval and the inventory deduction will be recorded. Then, the raw materials will be taken inventory regularly and the results will be recorded on the chain. If there are any differences, the reasons will be analyzed and handled. The data of the whole process is based on the blockchain to ensure that it is true, accurate and cannot be tampered with, and raw materials can be traced. The raw materials management module generates a purchase order based on the raw material demand issued by the production plan management module and sends it to the supplier. During the procurement process, the order status, logistics information, etc. are recorded in real time. After the raw materials arrive, the quality inspection module is notified for inspection. If the inspection is qualified, the raw materials are put into the warehouse and the inventory data is updated to the blockchain; if unqualified, the return process will be initiated, and the inventory level will be monitored in real time through the Internet of Things devices. When the inventory is lower than the set threshold, the replenishment reminder will be automatically triggered to ensure uninterrupted production.

[0035] Reference Figure 5As shown in the figure, in the warehousing and logistics management module, warehousing management includes product entry, inventory management and product exit. When products are entered, the production department notifies the customer, and after inspecting the products, the warehouse is allocated and the inventory is updated to the blockchain. During inventory management, the environment and inventory status are monitored in real time through the Internet of Things, and regular inventory is taken and abnormalities are warned. When products are shipped out, they are picked and inspected according to sales or production instructions, and the inventory is updated after they are correct. Logistics management includes logistics order creation, material transportation tracking and goods delivery and receipt. Logistics orders are created by obtaining outbound product information, and logistics providers are selected. During transportation, logistics providers upload transportation status and location information in real time and record abnormalities. When the goods are delivered, the consignee inspects and accepts them, and signs for them if they are qualified. The logistics module records the completion information, and the entire data is stored in the blockchain to ensure that they are authentic and cannot be tampered with. After the product is produced and passed the quality inspection, the warehousing module receives the product entry request, arranges the storage location, and updates the inventory ledger to the blockchain. When there is a sales order, the product is arranged to be shipped out according to the inventory situation and order requirements, and a logistics waybill is generated. During the logistics process, the logistics status, including transportation location and estimated arrival time, is obtained in real time through the logistics tracking system, and the information is synchronized to the blockchain. Customers or internal personnel of the company can view the product logistics track through the data query and traceability module, conduct regular inventory counts, and compare the inventory results with the inventory data on the blockchain to ensure that the accounts are consistent with the actual situation.

[0036] Reference Figure 6 As shown in the figure, the basic module of blockchain includes account model module, cryptography module, network communication module, consensus algorithm module and blockchain ledger module. In the basic module of blockchain, the account model module first creates identities and sets permissions for participants. After the business link generates data, the cryptography module performs hash operations and digital signatures. Then the network communication module broadcasts the cryptographically processed data between nodes, and each node receives and verifies it. Then the consensus algorithm module enables the nodes to reach a consensus on the validity of the data according to the rules. Finally, the blockchain ledger module packages the consensus data into a new block and updates the ledger. Each node synchronizes the ledger, and each module collaborates to ensure the quality of system data. After each business module generates data, the basic module of blockchain immediately performs hash encryption on the data, and packages the encrypted data with timestamp, hash value of the previous block and other information into a new block. Then, through the consensus mechanism, the new block is verified and confirmed between the nodes of the network. Only when the majority of nodes are recognized, the new block will be added to the ledger to ensure the consistency and immutability of the data in the entire network. As the system runs, the stability of the blockchain network is continuously maintained, the node status is monitored, and network failures, node abnormalities and other problems are handled in a timely manner.

[0037] Specifically, when the system is enabled, the user management module is the first to operate. The administrator creates various user accounts and grants permissions based on positions. For example, the production plan maker is granted advanced operation permissions of the production plan management module, and ordinary workers are set to have permissions to only access specific tasks in the production execution module. When the user logs in to the system, the module ensures legal access through identity authentication. After the user logs in, the production plan management module formulates a production plan based on market orders, inventory status and production capacity, and clarifies key contents such as product specifications, quantity, production time and process flow. The plan is then encrypted and stored in the blockchain so that all relevant modules know the production goals. Based on the production plan, the raw material management module generates procurement requirements, determines the supplier, procurement quantity and delivery time, etc. The procurement process information is recorded and uploaded to the chain in real time. After the raw materials arrive, the quality inspection module is notified, and if they are qualified, they are put into storage and the inventory data is updated to the blockchain. The production execution module receives tasks from the production plan module and allocates them to specific equipment and personnel. During production, the Internet of Things collects equipment parameters and production data. The production progress and other data are quickly uploaded to the blockchain after encryption to ensure the transparency of the production process. At the key production nodes and finished product stages, the quality inspection module conducts inspections according to preset standards and processes, and records the inspection results, inspection personnel and other information on the chain. If the product is unqualified, timely feedback will be given to the production execution module to suspend production, and assist in tracing the source of the problem. After the product is qualified after inspection, the warehouse management module arranges for warehousing and updates the inventory ledger to the blockchain. When there is a sales order, the product is arranged to be shipped out and a logistics waybill is generated. The logistics module tracks the transportation status in real time and synchronizes the information to the blockchain. During the entire production and processing process, the blockchain basic module runs through the entire process, encrypts the data generated by each module, and ensures that the data is consistent at each node through a consensus mechanism. The data is stored sequentially in the form of blocks to ensure that the data is true, accurate and cannot be tampered with. The data query and traceability module responds at any time, and enterprise personnel, customers, and regulatory agencies query data at all stages of production according to their authority. Once there is a problem with the product, the module can be used to trace the entire process information and quickly locate the problem link.

[0038] Reference Figure 6 As shown in the figure, when the cryptography module performs hash operations, the hash operation first takes the data generated by each module, including production plans and quality inspection results, as input, selects the SHA-256 algorithm, and generates a unique hash value through complex operations to verify data integrity and blockchain. In terms of digital signatures, the data owner encrypts the data or the generated unique hash value with a private key, and generates a signature and transmits it with the data. The receiver uses the sender's public key to decrypt the signature to obtain a hash value, and compares it with the hash value calculated by itself for the received data. If they are consistent, it proves that the data is authentic and has not been tampered with.

[0039] In detail, when the hash operation is running, the data in each block will be hashed to generate a unique hash value. When any slight change occurs to the data, the hash value will be completely different. By verifying the consistency of the hash value, it is possible to quickly determine whether the data has been tampered with. In digital signatures, when the data owner, including production department employees and suppliers, needs to sign the data, they first obtain their own private key and determine the data to be signed. In order to improve the efficiency and security of the signature, the data to be signed is usually hashed first to obtain the hash value of the data, and the private key is used to encrypt the hash value to generate a digital signature. The process uses an asymmetric encryption algorithm, with the private key as the encryption key. A series of mathematical operations are performed on the hash value to generate a string of digital signatures related to the original data and the private key. The generated digital signature is attached to the original data and transmitted to the recipient together. After the recipient receives the data and the digital signature, it uses the sender's public key to decrypt the digital signature to obtain a hash value. At the same time, the recipient re-hashs the received data to obtain another hash value. The two hash values ​​are compared. If they are consistent, it means that the data was indeed sent by the claimed sender and has not been tampered with during transmission. If they are inconsistent, it means that there may be problems with the data.

[0040] Reference Figure 6 As shown in the figure, the consensus algorithm module includes the proof-of-work algorithm, the proof-of-stake algorithm and the practical Byzantine fault-tolerant algorithm. In the proof-of-work algorithm, nodes compete for the right to record accounts based on computing power, which makes it extremely costly to tamper with data, ensures data security and non-tamperability, realizes decentralized consensus, and maintains stable operation of the system. The proof-of-stake algorithm determines the right to record accounts based on the node's rights, has low energy consumption and high efficiency, and speeds up transaction confirmation. Nodes are more cautious in maintaining the system due to equity mortgage, which enhances security and stability. In the practical Byzantine fault-tolerant algorithm, consensus is quickly reached through multiple rounds of voting, which is suitable for partially trusted alliance chain scenarios, can tolerate certain faulty nodes, efficiently process transactions, and ensure smooth business processes. The combination of the three It enhances system security from different angles and prevents data from being tampered with. The proof-of-work algorithm relies on computing power competition to ensure data security. Malicious tampering requires extremely high computing power. In the proof-of-stake algorithm, nodes reduce malicious behavior due to equity pledge. The practical Byzantine fault-tolerant algorithm can tolerate some faulty nodes. The proof-of-stake algorithm and the practical Byzantine fault-tolerant algorithm have fast transaction processing speeds, which can make up for the shortcomings of the slow proof-of-work algorithm. On the premise of ensuring security, it improves the overall transaction processing efficiency of the system and meets the high-frequency transaction needs of production and processing management. The proof-of-stake algorithm has low energy consumption and cooperates with the proof-of-work algorithm to reduce excessive reliance on computing power resources, reasonably allocate system resources, and achieve optimal resource utilization.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A digital production and processing management system based on blockchain technology, characterized by: include: A user management module, which performs identity authentication and authority allocation on users to ensure legal access; A production plan management module, which formulates a production plan based on multiple factors and stores it on the blockchain; Raw materials management module, which purchases raw materials according to plan, records relevant information and stores them on the blockchain after acceptance; A production execution module, which receives production tasks and collects data in real time during the production process and uploads it to the blockchain; Quality inspection module, which conducts inspections at key nodes according to standards, uploads results to the chain, and provides timely feedback if unqualified; A warehousing and logistics management module, which performs warehousing, outbound and logistics tracking of qualified products and updates blockchain data; Blockchain basic module, which provides encryption, consensus and storage guarantee for each module data throughout the process; The data query and tracing module is provided with a data indexing mechanism, which is used to locate the required information in the blockchain basic module.

2. The digital production and processing management system based on blockchain technology as claimed in claim 1, characterized in that: The user management module first creates a user account, collects user information and generates an account after multi-factor identity verification, then allocates user permissions based on business roles, and flexibly adjusts with job changes. Each adjustment is recorded in the blockchain. When the user logs in and authenticates, the system strictly verifies the identity, creates a secure session, and then records and audits the user operations. During the user operation process, the system automatically records detailed logs, encrypts them and stores them in the blockchain for audit tracing. Finally, user account maintenance is performed, including password management, account deactivation and recovery, and compliance data cleanup. All operations are recorded in the blockchain.

3. The digital production and processing management system based on blockchain technology as claimed in claim 1, characterized in that: When the production plan management module is running, it first collects and analyzes data, collects data from sales orders, inventory, and equipment management systems, predicts demand in combination with market trends, and provides a basis for plan formulation. Then, it formulates a production plan, determines production targets based on demand, generates a master production plan, clarifies products, quantities, and time, and formulates a material requirement plan, calculates material procurement volume and time, and then evaluates and adjusts the plan, evaluates production capacity and resources, identifies risks and formulates countermeasures to ensure that the plan is feasible. Then, it reviews and approves the plan, submits the plan to multiple departments for review, and then approves it by management. Finally, it executes and monitors the plan, decomposes the plan into tasks and assigns them, monitors progress in real time, analyzes deviations and makes timely adjustments to ensure that the plan is completed on time. All process data is recorded in the blockchain to ensure that it is authentic and cannot be tampered with.

4. The digital production and processing management system based on blockchain technology as claimed in claim 1, characterized in that: When the raw material management module is working, it first purchases raw materials, selects suppliers based on the production plan, generates purchase orders and records them in the blockchain, closely follows up the procurement process, records logistics information, then inspects the raw materials, conducts quality inspection and quantity verification after arrival, and uploads the results to the chain. If qualified, it proceeds to the next step, and if unqualified, the return process is initiated. The raw materials are then put into the warehouse, the raw materials are processed for entry, and the inventory information is updated to the blockchain. At the same time, the storage environment is monitored and the data is recorded. During the use of raw materials, the production department submits an application for use, which is issued by the warehouse after approval and the inventory deduction is recorded. Then, the raw materials are regularly counted and the results are recorded on the chain. If there are any differences, the reasons are analyzed and processed. The data of the entire process is based on the blockchain to ensure that it is true, accurate, and cannot be tampered with, and raw materials can be traced.

5. The digital production and processing management system based on blockchain technology as claimed in claim 1, characterized in that: In the warehousing and logistics management module, warehousing management includes product entry, inventory management and product exit. When products enter the warehouse, the production department will notify, and after inspecting the products, the warehouse will be allocated and the inventory will be updated to the blockchain. During inventory management, the environment and inventory status are monitored in real time through the Internet of Things, and regular inventory checks and warnings of abnormalities are carried out. When products are leaving the warehouse, they are picked and inspected according to sales or production instructions, and the inventory is updated after they are correct. Logistics management includes logistics order creation, material transportation tracking, and goods delivery and receipt. Logistics orders are created by obtaining outbound product information, and logistics providers are selected. During transportation, the logistics provider uploads the transportation status and location information in real time, records abnormalities, and when the goods are delivered, the consignee inspects and accepts them, and signs for them if they are qualified. The logistics module records the completion information, and the entire data is stored in the blockchain to ensure authenticity and cannot be tampered with.

6. The digital production and processing management system based on blockchain technology as claimed in claim 1, characterized in that: The blockchain basic module includes an account model module, a cryptography module, a network communication module, a consensus algorithm module and a blockchain ledger module. In the blockchain basic module, the account model module first creates identities and sets permissions for participants. After the business link generates data, the cryptography module performs hash operations and digital signatures. Then the network communication module broadcasts the cryptographically processed data between nodes, and each node receives and verifies it. Then the consensus algorithm module enables the nodes to reach a consensus on the validity of the data according to the rules. Finally, the blockchain ledger module packages the consensus data into a new block and updates the ledger. Each node synchronizes the ledger, and each module collaborates to ensure the quality of system data.

7. The digital production and processing management system based on blockchain technology as claimed in claim 6, characterized in that: When the cryptography module performs hash operations, the hash operation first uses the data generated by each module, including production plans and quality inspection results, as input, and selects the SHA-256 algorithm to generate a unique hash value through complex operations to verify data integrity and blockchain. In terms of digital signatures, the data owner encrypts the data or the generated unique hash value with a private key, and generates a signature and transmits it with the data. The receiver uses the sender's public key to decrypt the signature to obtain a hash value, and compares it with the hash value calculated by itself for the received data. If they are consistent, it proves that the data is authentic and has not been tampered with.

8. The digital production and processing management system based on blockchain technology as claimed in claim 6, characterized in that: The consensus algorithm module includes a proof-of-work algorithm, a proof-of-stake algorithm and a practical Byzantine fault-tolerant algorithm. In the proof-of-work algorithm, nodes compete for the right to keep accounts based on computing power, which makes it extremely costly to tamper with data, ensures data security and non-tamperability, achieves decentralized consensus, and maintains stable system operation. The proof-of-stake algorithm determines the right to keep accounts based on the rights of the nodes, has low energy consumption, high efficiency, and accelerates transaction confirmation. Nodes are more cautious in maintaining the system due to equity pledge, thereby enhancing security and stability. The practical Byzantine fault-tolerant algorithm quickly reaches consensus through multiple rounds of voting, adapts to partially trusted alliance chain scenarios, can tolerate certain faulty nodes, efficiently processes transactions, and ensures smooth business processes. The combination of the three enhances system security from different angles and prevents data from being tampered with.

Images