CN114529306A - Block chain-based free forging supply chain traceability system - Google Patents
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Abstract
The invention provides a block chain-based free forging supply chain traceability system which comprises a free forging user login module, a free forging information management module, a free forging information traceability module and a free forging supply prediction module. The method can realize the whole process traceability of the supply chains of free forging raw material suppliers, free forging manufacturers, logistics transportation companies and sales outlets, and improve the traceability efficiency and the safety degree of the free forging supply chain. The invention is developed based on a HyperLegger Fabric framework, realizes the service logic of each node of a supply chain by compiling an intelligent contract, and links the transaction information in time. All batches of free forgings realize one object and one code, and identity code information can be synchronized to the block chain network. The finally realized block chain-based free forging supply chain traceability system can efficiently and safely realize free forging supply chain traceability.
Description
Technical Field
The invention relates to the technical field of a free forging supply chain traceability system, in particular to a block chain-based free forging supply chain traceability system.
Background
The supply chain is composed of logistics, information flow and fund flow, and suppliers, manufacturers, sellers and consumers in the industry are connected in series according to the structure in which the supply chain is responsible. Generally, the supply chain of the manufacturing industry, starting from the procurement of raw materials, involves production, processing, packaging, transportation, sales, etc., so the supply chain mainly involves different industries and different enterprises, and may span different cities, provinces and even countries in different regions.
For a machine manufacturing enterprise, the quality level of a product is mainly determined by the production process. Quality traceability, one of the most important quality management measures, largely determines the quality level of a mechanical product. Because the production mode of the free forging enterprise is a small-batch order type, and design and production organization are needed according to the requirements of customers, the stock of special blanks which are one of raw materials in the stock plan of the enterprise is often less, the purchasing work of some special materials can be determined after the order is determined, and the supply quality and the supply period of corresponding suppliers have great influence on the production of the free forging enterprise. In addition, the free forging product needs to go through a plurality of processes, so as long as a defect appears in one process, the defect will appear in the forging. Therefore, in the free forging product supply chain, a perfect free forging supply chain traceability system needs to be established for timely traceability of the free forging with problems.
This clever first proposed the concept of blockchains in 2008. As the innovative significance of electronic money and blockchain technology is well known to the public, the government has explicitly advocated the use of "currentless blockchains". The block chain is a distributed shared account book and a database, and has the characteristics of decentralization, no tampering, trust removal and the like. Nowadays, the application of the blockchain technology is not only in the field of digital currency, but also in the fields of internet of things, logistics, public service, insurance, public welfare and the like as a new technology. For the problems of the free forging supply chain, the block chain technology is an effective solution.
Disclosure of Invention
The invention provides a traceability system of a block chain-based free forging supply chain, aiming at solving the problems of asymmetrical supply chain role information, insufficient supply chain role information credibility, easy tampering of transaction data and the like of the existing free forging supply chain.
In order to achieve the above purpose, the technical means adopted is as follows:
a block chain-based free forging supply chain traceability system is realized based on Hyperridge Fabric, and the overall scheme of the system comprises the following steps: the system comprises an application layer, a service layer, a network layer and a database storage layer.
The application layer is an operating system directly displayed to a user, the user can carry out free forge information query by browsing in a browser, and the operation of an intelligent contract in a server can be triggered by the browser. The application layer development adopts a mainstream front-back end separation mode, so that the coupling degree of front-back end logic is greatly reduced, and the system development and maintenance efficiency is improved. The front end is mainly developed by adopting an Vue-Element-Admin framework, and the framework combines Vue with Element UI to generate a complete set of codes suitable for system development. The back end is mainly developed by adopting a SpringBoot framework, and the framework is researched and compiled by Pivotal team and is an open-source lightweight development framework. The behaviors of users in all browsers need to be uplinked in a block chain so as to conveniently and safely trace the source of the free forging supply chain, so that the behaviors need to be conducted through an SDK (software development kit), SDK versions provided by Fabric authorities mainly comprise Python, NodeJs, Golang and Python, and the invention adopts Fabric-Java-SDK to interact with a Linux-deployed Fabric network. The SDK is a Java language-based application development tool provided by the Fabric official.
The service layer is a free forging supply chain traceability system deployed in Linux, service logics in all the free forging supply chains need to be recorded in a Fabric network and then packaged into a block uplink, and a user can trace the source of behaviors in the free forging supply chain at any time and any place after logging in the system, wherein the behaviors comprise a series of behaviors such as raw material production time, free forging processing time and the like. All service logic in the free forging supply chain is contained in the intelligent contract, so the service layer is mainly the deployment of the intelligent contract, and in the B/S framework, the behavior operation of the user is actually the SDK to trigger the logic function in the intelligent contract. The HyperLegger Fabric architecture is mainly written by Golang, so that the invention also adopts Golang written intelligent contracts suggested by the official parties to be deployed in different channels of the free form forging supply chain.
The database storage layer aims to improve the response speed of the system and store basic information of users. For the whole source tracing system of the free forging supply chain, only the user belonging to the alliance can legally access the whole system, so that the information of the access node needs to be stored in an independent server database in a lasting mode, the user can be verified when logging in, in order to improve the response speed of the user, the popular JWT token mechanism is adopted for storing the user information, the user can obtain the token provided by the back end after the user accesses for the first time, and the user information can be loaded only by carrying the token within the validity period. In addition, in order to provide the response speed of the whole free forging supply chain traceability system, additional traceability information can be stored in the local database in a persistent mode, if the current node is a non-Byzantine node, the data stored in the database is consistent with the data in the CouchDB database deployed in Linux, the data in the remote server Fabric does not need to be accessed when the traceability information is inquired each time, the traceability information is stored in the local database in a persistent mode after the inquiry is carried out for the first time, and the front-end user can directly request the local database when accessing. However, in order to ensure the security of the tracing information of the current node, the validity period of the tracing information may be set, and the request may be sent to the tracing information in the Fabric network again after the data expires. The method has the advantages that the data mode of the user persistent storage is more, the database Mysql with the widest use range is used for storage, and MyBatis is used for reading and writing Mysql at the rear end.
The network layer establishes a Fabric network, while Fabric deployment relies on a Docker container, and Org corresponding to each link in the free-form forge supply chain and each node Peer in each organization run in the Docker in the form of a container. Naturally, the tracing is the core business logic of the system, so that to perform uplink tracing on all operations (invoke) on the intelligent contract, the tracing information needs to be persistently stored, and the method selects the courhdb database owned by the Fabric official to be persistently stored. The CouchDB is not a simple key value pair storage database, is stored in a JSON text data format, is consistent with the interactive data format of the front end and the back end, supports the index of the text data in the database, and is very suitable for storing the traceability information.
The intelligent contract is one of core links of the whole free forging supply chain traceability system, and determines the respective authority of operating the traceability system by the forging link and the authority of acquiring traceability information. The intelligent contracts deployed in the Fabric network are written in the gold language recommended by the official, and mainly comprise four intelligent contracts corresponding to four different links in a free-form supply chain, namely material. In each intelligent contract, the structure definition and trigger (invoke) contract function writing is the main.
Drawings
FIG. 1 is a general architecture diagram of a traceability system of a free forging supply chain
FIG. 2 is a block chain-based source-tracing operation system of the free forging supply chain
FIG. 3 is a network topology of a free forging supply chain traceability system
Detailed Description
The invention is further described below with reference to the accompanying drawings.
A blockchain-based free forging supply chain traceability system, as shown in fig. 2, comprising: data information of each node of the free forging supply chain is collected, a Fabric network is deployed, the free forging transaction data cochain is arranged, and the free forging supply chain transaction data source tracing is carried out. Each node inputs information required to be acquired according to an IoT or a webpage, the acquired data generates a Hash code in an asymmetric encryption mode and is sent to a block chain-based free forging supply chain traceability system, an Order node in a Fabric network carries out global consensus, after the consensus is completed, the data is written into a block chain network in a block form, and meanwhile, the generated block Hash is returned to complete information data uplink storage and sharing. In the whole free forging supply chain link, a client can scan the identity code on the outer package of the free forging piece for tracing, and can also log in a developed block chain-based free forging supply chain tracing system for searching and tracing the unique free forging identity code. The customer can inquire the information data of the whole process from the raw material supplier at the starting point of the free forging supply chain to the terminal sales. When a user searches and traces the source, firstly, after a block chain-based free forging supply chain tracing system is logged in, when the information of the current batch or other arbitrary batches to be searched is input in a front-end interface (the information of the free forging parts of other batches is not displayed), a Fabric network deployed in a remote server is called through a Fabric-SDK, and the data stored in a background CouchDB is inquired through a query function in an intelligent contract and then returned to the front-end user for displaying. If the user finds that the ordered free forging information is wrong, the user can contact related supervision departments or suspect nodes for checking, so that the information of any link can be traced, and any node manufacturer can contact the information, thereby enhancing the consumption information of free forging consumers, improving the safety of a free forging supply chain and reducing the risk of cheating of the manufacturer. The free forging information storage and tracing system will be described in detail below.
Content 1, source tracing process of the free forging supply chain: firstly, recording related information of a free forging in an identity identification code based on Near Field Communication (NFC) technology; then, acquiring free forging identity information by scanning an identity identification code on a free forging, directly inputting the free forging identity information into a traceability system of a free forging supply chain based on a block chain, and manually uploading the information to the traceability system by each node through part of information which cannot be uploaded by the identity code; finally, in the whole free forging supply chain link, a client can scan the identity code on the outer package of the free forging to trace the source, and can also log in a block chain-based free forging supply chain tracing system to search and trace the source of the unique free forging identity code.
Content 2, free forging information storage: the invention introduces an identity recognition mechanism of 'one object and one code', so that in the process of data transmission into the system, a person is replaced to manually input related transaction information, the identity recognition code on the free forging piece is scanned to obtain the free forging identity information, and then the free forging identity information is directly input into the traceability system of the free forging supply chain based on the block chain, and part of the information which cannot be uploaded through the identity code, such as the information of a person in charge of each node, is uploaded into the traceability system by each node. The free forging raw material supplier and the free forging manufacturer can inspect the raw materials and the free forgings, a sensor is used in the inspection process, and the inspection result is also transmitted into the identity code of the free forgings after the data obtained by the sensor is subjected to the verification of corresponding parameters. In the whole block chain-based free-form supply chain tracing, plaintext storage or ciphertext storage can be selected. For the whole supply chain process, most of the data for tracing are public, so that the clear text information of the transaction data can be directly used for storage. Some information in the part of nodes of the free forging supply chain is commercial confidential information of free forging processing, and a merchant can select to encrypt and store the part of information in the identification code of the Internet of things. And only when the problems occur in the batch or the free forging piece for tracing, the corresponding node manufacturer is required to publish the information in the clear text for comparison and inspection.
Content 3, free forging supply chain traceability system: as shown in fig. 3, the network topology based on the free forging supply chain traceability system implemented by the present invention uses five Linux systems to deploy a hyper-hedger Fabric network, which respectively represents 4 Peer nodes and an Order node, and ensures that five servers can ping each other; and developing by using a personal PC, and viewing and operating the front-end interface of the traceability system by using the personal PC as a client.
In the system, Vue-Element-Admin is used for front-end development, SpringBoot is used for back-end development, and Fabric-Java-SDK is used for completing network connection and triggering intelligent contracts.
The system mainly comprises a user role management module, a user transaction information uplink module, a free forging supply chain information tracing module and a free forging supply chain supply prediction module. For the super administrator user to set the admission mechanism of the whole network, and want to join the whole alliance chain system, the node needs to provide the corresponding qualification certificate to the super administrator user, and then the super administrator determines whether to incorporate the user into the alliance chain. Different functional module interfaces are displayed for the free forging supply chain raw material suppliers, free forging processing manufacturers, logistics transportation companies and free forging sales outlets for operation and treatment.
The login module of the free forging supply chain traceability system mainly aims at login verification of users in an alliance chain, and only nodes which are registered in the system and added after permission is granted by a super manager can enter the real traceability system to conduct transaction and uplink transaction information. The login information mainly comprises a mobile phone number and a password bound by each enterprise responsible person during registration, and the login is successful when the mobile phone number and the password exist in a background database and are consistent. The user entering the alliance chain does not register in the login interface, so that the strength of the security and the robustness of the system is weakened, and if the user can register freely for logging in, freely forged transaction information in the whole alliance chain is exposed to the outside, which is very dangerous for a traceability system. Therefore, the registration interface is realized in the super manager module, and the enterprise qualification certificate submitted to the super manager can be added into the whole Fabric network only after being verified to be valid. The super administrator user is a core role of user management, can be a third-party trust mechanism, and can also select the node with the strongest public trust from the whole alliance as the super administrator, the super administrator has the right to delete the Byzantine node and also has the right to add a legal node, certainly, the whole transaction information of the liberty forge supply department is traceable, and thus, the supervision of the transaction is enhanced to a certain extent.
The free forging information management module displays a corresponding function module after different role users corresponding to different links of a free forging supply chain log in the system, and functions in the function module correspond to externally exposed API interfaces in the intelligent contract. When the raw material information is added, a new batch of raw materials is generated by combining the current raw material batch according to the free forging raw material supplier ID, and is added to the Fabric network through the SDK and then updated into the CouchDB. Similarly, for various operations of each link in the free forging supply chain on the free forging, such as processing the free forging, transporting the free forging, selling the free forging and the like, an intelligent contract is triggered by the SDK to be packaged into blocks and uplink to be updated into the CouchDB, so that for the free forging information traceability module, historical data can be directly accessed, and the real traceability of the free forging supply chain is realized.
The free forging information tracing module is the main research content of the invention. For a front-end user, all operation records (including a raw material supply link, a free forging link, a logistics transportation link and a sales link) of the batch of free forgings can be traced only by inputting the related batch of free forgings to be inquired, wherein the operation records include time of each operation action, a responsible person and related remark information. The functional module is a common module that is visible to all nodes legitimately present in the liberty-forge supply chain alliance.
And the free forging supply prediction module predicts the supply volume of three days in the future in real time according to the supply data of the free forging recorded in the block chain. The histogram of the supply data of the free forging supply chain of nearly one week is mainly displayed, and the future three days are predicted in real time through an LSTM model based on an attention mechanism, wherein the prediction period is one day. And finally, displaying the total sales of all the current free forgings, comparing the total sales with the current year, displaying the increasing or decreasing trend in a front-end interface, and helping each node to better master the supply trend and the future trend of the current free forgings.
The core idea of the attention mechanism is that the attention of the human brain to things at a certain moment is focused on a certain place, and the characteristics of other parts are ignored. And (3) an attention mechanism is introduced to distribute different weights to the features obtained by processing through the LSTM algorithm, so that more key influence factors are highlighted, and the accuracy of the free forging supply chain supply quantity prediction and the resource expense of a lower computer are improved.
X in the formula (1)1,x2,x3,…,xNTo input information, q is a query vector associated with a task and s (x, q) is an attention scoring function.
When the query function q and the input information X are determined, the probability α of the ith input vector can be calculatedn，
The final summary of the output information is then obtained,
attention distribution α in formula (3)nThe attention degree of the nth input.
Claims (9)
1. A blockchain-based free forging supply chain traceability system comprises: user role management module, user transaction information cochain module, free forging supply chain information traceability module, free forging supply chain supply prediction module, its characterized in that: the traceability system of the free forging supply chain based on the block chain realizes the whole process traceability of raw material suppliers, free forging manufacturers, logistics transport companies and terminal sales.
2. The blockchain-based free forging supply chain traceability system of claim 1, wherein: the intelligent contracts deployed in the Fabric network are written in the Golang language, and are four intelligent contracts corresponding to four different links in the free-form forge supply chain.
3. The blockchain-based free forging supply chain traceability system of claim 1, wherein: a Linux system is used for deploying a HyperLegger Fabric network which respectively represents a Peer node and an Order node, and the five servers can be ensured to ping mutually; and developing by using a personal PC, and viewing and operating a front-end interface of the traceability system by using the personal PC as a client.
4. The blockchain-based free forging supply chain traceability system of claim 1, wherein: the supply prediction function of the free forging is integrated, the LSTM model based on the attention mechanism is used for predicting the data of the future three times by using the supply data within 7 days of the free forging, and the prediction updating period is one day.
5. The blockchain-based free forging supply chain traceability system of claim 1, wherein: login verification is carried out aiming at users in an alliance chain, and only nodes which are registered in the system and added after permission is granted by a super administrator can enter the real tracing system to carry out transaction and link transaction information; the login information mainly comprises a mobile phone number and a password bound by each enterprise responsible person during registration, and the login is successful when the mobile phone number and the password are correct.
6. The blockchain-based free forging supply chain traceability system of claim 1, wherein: the free forging information management module displays the corresponding function module after different role users corresponding to different links of the free forging supply chain log in the system.
7. The blockchain-based free forging supply chain traceability system of claim 1, wherein: the invention introduces an identity identification mechanism of one object and one code, and effectively ensures the authenticity and the safety of data by combining a physical tag code with a block chain hash code.
8. The blockchain-based free forging supply chain traceability system of claim 1, wherein: the block chain traceability system adopts a HyperLegendr Fabric alliance chain system architecture, and comprises the following steps: an application layer, a service layer, a network layer and a database storage layer; wherein:
the application layer is an operating system directly displayed to a user, the user conducts free-form forging information query through browsing in a browser, and the browser triggers the running of an intelligent contract in the server;
the service layer is a free forging supply chain traceability system deployed in Linux, service logics in all the free forging supply chains are required to be recorded in a Fabric network and then packaged into a block uplink, and a user logs in the system and conducts traceability on behaviors in the free forging supply chain anytime and anywhere;
the database storage layer improves the response speed of the system and stores the basic information of the user; only the users belonging to the alliance can legally access the whole system;
the network layer mainly establishes a Fabric network and packs and links the transaction information of each node.
9. The blockchain-based free forging supply chain traceability system of claim 8, wherein: all transaction requests need to be subjected to endorsement verification, qualified transaction requests are submitted to the Order for consensus, and the Order node completes transaction validity confirmation through a consensus algorithm, so that the transaction requests are sequenced and then the Order node generates a block.
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| CN113469595A (en) * | 2020-03-31 | 2021-10-01 | 株式会社日立制作所 | Intelligent supply chain system and server platform |
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| CN115630890A (en) * | 2022-12-13 | 2023-01-20 | 成都信息工程大学 | Block chain-based transportation method and system for exhibitions |
| CN115630890B (en) * | 2022-12-13 | 2023-09-01 | 成都信息工程大学 | Block chain-based transportation method and system for exhibition commodity |
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