A quality traceability management system and method for the entire production process of aluminum profiles

Abstract

The present invention relates to the technical field of quality tracing, specifically to a quality tracing management system and method for the entire production process of aluminum profiles, including a data comparison unit, a data query unit and a quality tracing unit, and also including: a node definition unit, the node definition unit is used to perform node definition on the entire production process of aluminum profiles to obtain a production node set for the entire production process of the aluminum profiles, the production node set includes a raw material procurement node, a smelting workshop node, an extrusion molding workshop node, a heat treatment workshop node, a surface treatment workshop node, a quality inspection node and a transportation node, and the production node set of the entire production process of the aluminum profiles is transmitted to a blockchain construction unit and a real-time monitoring unit. The present invention constructs a node set of the entire production process of aluminum profiles and a blockchain of each node through blockchain technology, thereby ensuring that each production stage from raw material procurement to the final product has complete data recording and tracing capabilities.

Description

Technical Field

[0001] The present invention relates to the technical field of quality tracing, and in particular to a whole-process quality tracing management system and method for aluminum profile production. Background Art

[0002] Aluminum profile production refers to the process of processing aluminum and its alloys into aluminum profile products of different shapes and sizes through a series of processes. Aluminum profiles usually exist in the form of rods, tubes, profiles, etc., and are widely used in construction, transportation, electronics, machinery manufacturing and other fields.

[0003] Traditional systems often rely on manual records or management methods based on local databases, resulting in incomplete data records and difficulty in traceability. The lack of real-time data collection and monitoring capabilities makes it difficult to promptly discover and solve problems after they occur. After discovering quality problems, traditional systems require a lot of time and manpower to locate and analyze problems. Due to the scattered data sources and incomplete records, the cycle of finding the root cause of the problem and making timely adjustments is long, affecting production efficiency and product quality. In addition, traditional systems often have information island problems, information sharing and collaborative work between different departments are inefficient, and data flow in the production process is not smooth, making it difficult to achieve comprehensive control and management of the overall production process. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the background technology and to propose a quality traceability management system and method for the whole process of aluminum profile production.

[0005] The technical solution of the present invention is a quality traceability management system for the whole process of aluminum profile production, including a data comparison unit, a data query unit and a quality traceability unit, and also includes:

[0006] A node definition unit, wherein the node definition unit is used to perform node definition on the entire aluminum profile production process to obtain a production node set of the entire aluminum profile production process, wherein the production node set includes a raw material procurement node, a smelting workshop node, an extrusion molding workshop node, a heat treatment workshop node, a surface treatment workshop node, a quality inspection node, and a transportation node, and the production node set of the entire aluminum profile production process is transmitted to a blockchain construction unit and a real-time monitoring unit;

[0007] A real-time monitoring unit, wherein the real-time monitoring unit receives the production node set of the entire aluminum profile production process transmitted by the node definition unit, and collects production data of the production node set of the entire aluminum profile production process by setting a monitoring device to obtain the production data of the production node set of the entire aluminum profile production process, and transmits the production data of the production node set of the entire aluminum profile production process to the blockchain construction unit and the data query unit;

[0008] A blockchain construction unit, wherein the blockchain construction unit receives the production data of the production node set of the entire aluminum profile production process transmitted by the node definition unit and the production node set of the entire aluminum profile production process transmitted by the real-time monitoring unit, and constructs a blockchain of each production node in the production node set of the entire aluminum profile production process to obtain a blockchain of each production node in the production node set, and constructs a notarized blockchain to connect the blockchains of each production node in the production node set to obtain a blockchain network, and stores the production data corresponding to each production node in the production node set in the corresponding blockchain in the blockchain network, and transmits the blockchain network to the data comparison unit.

[0009] Preferably, the data query unit receives the production data of the production node set of the entire aluminum profile production process transmitted by the real-time monitoring unit, and integrates the production data of the production node set of the entire aluminum profile production process to obtain an aluminum profile data traceability set; if the quality inspection data of the quality inspection node in the production node set for other production nodes in the production node set is lower than a preset quality inspection threshold, then the aluminum profile data traceability data of the production node that is lower than the preset quality inspection threshold is obtained according to the aluminum profile data traceability set, and the aluminum profile data traceability data of the production node is transmitted to the data comparison unit and the quality traceability unit.

[0010] Preferably, the data comparison unit receives the blockchain network transmitted by the blockchain construction unit and the aluminum profile data traceability data of the production node transmitted by the data query unit, obtains the production data of the production node from the blockchain network, and matches the production data of the production node with the aluminum profile data traceability data of the production node to obtain a matching degree between the two. If the matching degree is greater than a preset matching degree threshold, it indicates that the aluminum profile data traceability data of the production node has not been tampered with; otherwise, it indicates that the aluminum profile data traceability data of the production node has been tampered with, and the production data of the production node is compared one by one with the aluminum profile data traceability data of the production node to obtain the tampered production data, and the tampered production data and the corresponding production node are transmitted to the quality traceability unit.

[0011] Preferably, the quality traceability unit receives the aluminum profile data traceability data of the production node transmitted by the data query unit and the tampered production data and the corresponding production node transmitted by the data comparison unit, and replaces the aluminum profile data traceability data with the tampered production data to obtain complete aluminum profile data traceability data, and based on the complete aluminum profile data traceability data, performs quality traceability on the entire aluminum profile production process machinery, and conducts quality inspections on the production nodes corresponding to the tampered production data.

[0012] Preferably, the notarial blockchain is used for data transmission between the blockchains of each production node in the production node set, and data is uploaded to the notarial blockchain and then passed to the blockchain of each production node in the production node set.

[0013] Preferably, the notarized blockchain is used for data transmission between the blockchains of each production node in the production node set, comprising the following steps:

[0014] A1. When the blockchain of each production node in the production node set initiates a cross-chain transaction, the cross-chain transaction is submitted to the notary node and enters the transaction waiting queue;

[0015] A2. The notary with a P value of 1 in the notary node is elected as the notary to execute the cross-chain transaction, and is used to handle all aspects of the cross-chain transaction;

[0016] A3. If the notary fails, the notary is forced to exit, and the P value of the notary is reduced by 1, that is, P=P-1, and the process returns to step A2;

[0017] A4. The cross-chain transaction enters the corresponding transaction list, and the P value of the remaining notaries decreases by 1, that is, P=P-1, and when the notary node fails, it returns to step A2 and reassigns N=N-1;

[0018] A5. When the cross-chain transaction succeeds or the transaction is terminated, the notary verifies the cross-chain transaction. If there is no error in the verification, the notary resets P=N and re-enters the notary node for sorting.

[0019] Preferably, the aluminum profile data traceability set is as follows:

[0020] ;

[0021] in, Represents the aluminum profile data traceability collection, The production data representing the set of production nodes in the entire production process of aluminum profiles, represents the union of sets, represents the raw material data set, represents the smelting production data set, represents the extrusion production data set, represents the heat treatment production data set, represents a collection of surface treatment production data, represents the quality inspection data set, represents a collection of transportation data, Represents the aluminum profile responsibility data set, Indicates the quality data of the feedback.

[0022] Preferably, matching the production data of the production node with the aluminum profile data traceability data of the production node to obtain a matching degree between the two comprises the following steps:

[0023] B1. Define M initial data points, divide the production data and the aluminum profile data traceability data to obtain M layers of data items, and define the total dimension of the data items. The total dimension formula of the data items is as follows:

[0024] ;

[0025] in, represents the total dimension of the data item, Indicates the total number of data items at the mth level, represents the standard deviation of the data item at the mth level, represents the population standard deviation, represents the total number of cells in the data item, Represents each cell in the data item, Represents the mean of the entire data item;

[0026] B2. Calculate the overall mean variance of each layer of data items. The overall mean variance formula of each layer of data items is as follows:

[0027] ;

[0028] in, represents the overall mean variance of each layer of data items, represents the weight of the data item at the mth layer, represents the standard deviation of the data item at the mth level, represents the total number of data items at the mth layer, and the total number of data items at the mth layer is calculated as follows:

[0029] ;

[0030] B3. Obtain the matching degree of the production data and the aluminum profile data traceability data based on the overall mean variance of each layer of data items through the mean absolute error.

[0031] The technical solution of the present invention is a method for tracing the quality of the whole process of aluminum profile production, which is applicable to the above-mentioned quality tracing management system for the whole process of aluminum profile production, and comprises the following steps:

[0032] S1. Define the nodes of the entire aluminum profile production process, including raw material procurement, melting workshop, extrusion molding workshop, heat treatment workshop, surface treatment workshop, quality inspection and transportation nodes;

[0033] S2. Build the data of each production node into a blockchain, and build a notarized blockchain to connect the blockchains of each production node to obtain a blockchain network;

[0034] S3. Integrate the production data into an aluminum profile data traceability set. If the quality inspection data of a production node is lower than a preset threshold, trace the aluminum profile data of the production node;

[0035] S4. Matching the production data of the production node with the aluminum profile data traceability data of the production node to obtain a matching degree between the two. If the matching degree is less than or equal to a preset matching degree threshold, then comparing the production data of the production node with the aluminum profile data traceability data of the production node one by one to obtain the tampered production data;

[0036] S5. Replace the aluminum profile data traceability data with the tampered production data to obtain complete aluminum profile data traceability data, and perform quality traceability on the entire aluminum profile production process based on the complete aluminum profile data traceability data.

[0037] Compared with the prior art, the above technical solution of the present invention has the following beneficial technical effects:

[0038] 1. The present invention constructs a node set of the entire aluminum profile production process and a blockchain of each node through blockchain technology, thereby ensuring that each production stage from raw material procurement to final products has complete data recording and traceability capabilities. This traceability system helps to discover and solve problems in the production process and improve the controllability and predictability of the production process. The real-time monitoring unit collects and monitors the data of each node in the production process in real time. This real-time nature enables managers to understand the production status in a timely manner, adjust production parameters in a timely manner, ensure that product quality meets expectations, and determine whether the production node meets the quality standards through the set quality detection threshold. If the detection data is lower than the preset threshold, it can automatically trigger data tracing and analysis to help determine the specific node and cause of the problem.

[0039] 2. The present invention ensures the security and integrity of production data through blockchain technology through the blockchain construction unit and the data comparison unit. The tamper-proof nature of the blockchain ensures the authenticity of the production data, while the data comparison unit can detect and report any possible data tampering or errors. The quality traceability unit ensures the integrity and traceability of the production data by replacing the tampered data and conducting quality inspections. This feedback mechanism helps to continuously improve the production process and reduce costs and resource waste caused by quality problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1A schematic diagram of the overall system flow in an embodiment of the present invention;

[0041] Figure 2 The figure is a flow chart of an overall method in one embodiment of the present invention.

[0042] Figure numerals: 1. Node definition unit; 2. Blockchain construction unit; 3. Real-time monitoring unit; 4. Data comparison unit; 5. Data query unit; 6. Quality traceability unit. DETAILED DESCRIPTION

[0043] Embodiment 1, as Figure 1 As shown, the present invention proposes a whole-process quality traceability management system for aluminum profile production, including a data comparison unit 4, a data query unit 5 and a quality traceability unit 6, and also includes:

[0044] Node definition unit 1, node definition unit 1 is used to define nodes in the whole process of aluminum profile production to obtain a set of production nodes in the whole process of aluminum profile production, the production node set includes raw material procurement node, smelting workshop node, extrusion molding workshop node, heat treatment workshop node, surface treatment workshop node, quality inspection node and transportation node, and transmit the production node set of the whole process of aluminum profile production to blockchain construction unit 2 and real-time monitoring unit 3;

[0045] The real-time monitoring unit 3 receives the production node set of the whole process of aluminum profile production transmitted by the node definition unit 1, and collects the production data of the production node set of the whole process of aluminum profile production by setting monitoring equipment to obtain the production data of the production node set of the whole process of aluminum profile production, and transmits the production data of the production node set of the whole process of aluminum profile production to the blockchain construction unit 2 and the data query unit 5;

[0046] The blockchain construction unit 2 receives the production data of the production node set of the entire aluminum profile production process transmitted by the node definition unit 1 and the production node set of the entire aluminum profile production process transmitted by the real-time monitoring unit 3, and constructs the blockchain of each production node in the production node set of the entire aluminum profile production process to obtain the blockchain of each production node in the production node set, and constructs a notarized blockchain to connect the blockchains of each production node in the production node set to obtain a blockchain network, and stores the production data corresponding to each production node in the production node set in the corresponding blockchain in the blockchain network, and transmits the blockchain network to the data comparison unit 4.

[0047] In the present invention, production nodes are key steps or links in the production process of aluminum profiles, and each node represents a specific stage or activity point in the production process; a blockchain network is a decentralized network composed of multiple computer nodes, which jointly maintain a growing, tamper-proof data record through protocols and algorithms; monitoring equipment generally includes various sensors, instruments and equipment for real-time monitoring and collection of various data in the production process of aluminum profiles, and monitoring equipment includes but is not limited to temperature sensors, pressure sensors, flow meters, humidity sensors, current and voltage sensors, motion sensors, image and camera equipment and GPS trackers.

[0048] In an optional embodiment, the data query unit 5 receives the production data of the production node set of the entire aluminum profile production process transmitted by the real-time monitoring unit 3, and integrates the production data of the production node set of the entire aluminum profile production process to obtain an aluminum profile data traceability set. If the quality inspection data of the quality inspection node in the production node set for other production nodes in the production node set is lower than a preset quality inspection threshold, then the aluminum profile data traceability data of the production node that is lower than the preset quality inspection threshold is obtained according to the aluminum profile data traceability set, and the aluminum profile data traceability data of the production node is transmitted to the data comparison unit 4 and the quality traceability unit 6.

[0049] In an optional embodiment, the data comparison unit 4 receives the blockchain network transmitted by the blockchain construction unit 2 and the aluminum profile data traceability data of the production node transmitted by the data query unit 5, and obtains the production data of the production node from the blockchain network, and matches the production data of the production node with the aluminum profile data traceability data of the production node to obtain a matching degree between the two. If the matching degree is greater than a preset matching degree threshold, it indicates that the aluminum profile data traceability data of the production node has not been tampered with; otherwise, it indicates that the aluminum profile data traceability data of the production node has been tampered with, and the production data of the production node is compared one by one with the aluminum profile data traceability data of the production node to obtain the tampered production data, and the tampered production data and the corresponding production node are transmitted to the quality traceability unit 6.

[0050] In an optional embodiment, the quality traceability unit 6 receives the aluminum profile data traceability data of the production node transmitted by the data query unit 5 and the tampered production data and the corresponding production node transmitted by the data comparison unit 4, and replaces the aluminum profile data traceability data with the tampered production data to obtain complete aluminum profile data traceability data, and based on the complete aluminum profile data traceability data, performs quality traceability on the entire aluminum profile production process machinery, and performs quality inspections on the production nodes corresponding to the tampered production data.

[0051] Embodiment 2: A quality traceability management system for the entire production process of aluminum profiles proposed by the present invention, compared with embodiment 1, this embodiment also includes: a notarial blockchain is used for data transmission between the blockchains of each production node in a production node set, and data is uploaded to the notarial blockchain and then passed to the blockchain of each production node in the production node set.

[0052] In an optional embodiment, the notarized blockchain is used for data transmission between the blockchains of each production node in the production node set, including the following steps:

[0053] A1. When the blockchain of each production node in the production node set initiates a cross-chain transaction, the cross-chain transaction is submitted to the notary node and enters the transaction waiting queue;

[0054] A2. The notary with a P value of 1 in the notary node is elected as the notary to execute cross-chain transactions and is used to handle all aspects of cross-chain transactions;

[0055] A3. If the notary fails, the notary is forced to exit, and the notary's P value is reduced by 1, that is, P=P-1, and the process returns to step A2;

[0056] A4. The cross-chain transaction enters the corresponding transaction list, and the P value of the remaining notaries decreases by 1, that is, P=P-1. When the notary node fails, it returns to step A2 and reassigns N=N-1;

[0057] A5. When a cross-chain transaction succeeds or is terminated, the notary verifies the cross-chain transaction. If there is no error in the verification, the notary will reset P=N and re-enter the notary node for sorting.

[0058] In an optional embodiment, the aluminum profile data traceability collection is as follows:

[0059] ;

[0060] in, Represents the aluminum profile data traceability collection, The production data representing the set of production nodes in the entire production process of aluminum profiles, represents the union of sets, represents the raw material data set, represents the smelting production data set, represents the extrusion production data set, represents the heat treatment production data set, represents a collection of surface treatment production data, represents the quality inspection data set, represents a collection of transportation data, Represents the aluminum profile responsibility data set, Indicates the quality data of the feedback.

[0061] In an optional embodiment, matching the production data of the production node with the aluminum profile data traceability data of the production node to obtain a matching degree between the two includes the following steps:

[0062] B1. Define M initial data points, divide the production data and aluminum profile data traceability data to obtain M layers of data items, and define the total dimension of the data items. The total dimension formula of the data items is as follows:

[0063] ;

[0064] in, represents the total dimension of the data item, Represents the total number of data items at the mth level, represents the standard deviation of the data item at the mth level, represents the population standard deviation, represents the total number of cells in the data item, Represents each cell in the data item, Represents the mean of the entire data item;

[0065] B2. Calculate the overall mean variance of each layer of data items. The overall mean variance formula of each layer of data items is as follows:

[0066] ;

[0067] in, represents the overall mean variance of each layer of data items, represents the weight of the data item at the mth layer, represents the standard deviation of the data item at the mth level, Represents the total number of data items at the mth layer. The total number of data items at the mth layer is calculated as follows:

[0068] ;

[0069] B3. The overall mean variance of each layer of data items based on production data and aluminum profile traceability data is used to obtain the matching degree between the two through the mean absolute error.

[0070] Embodiment three, as Figure 2 As shown, the present invention proposes a whole process quality traceability management method for aluminum profile production, which is applicable to the whole process quality traceability management system for aluminum profile production, and comprises the following steps:

[0071] S1. Define the nodes of the entire aluminum profile production process, including raw material procurement, melting workshop, extrusion molding workshop, heat treatment workshop, surface treatment workshop, quality inspection and transportation nodes;

[0072] S2. Build the data of each production node into a blockchain, and build a notarized blockchain to connect the blockchains of each production node to obtain a blockchain network;

[0073] S3. Integrate the production data into an aluminum profile data traceability set. If the quality inspection data of a production node is lower than a preset threshold, trace the aluminum profile data of the production node;

[0074] S4. Matching the production data of the production node with the aluminum profile data traceability data of the production node to obtain the matching degree between the two. If the matching degree is less than or equal to the preset matching degree threshold, then comparing the production data of the production node with the aluminum profile data traceability data of the production node one by one to obtain the tampered production data;

[0075] S5. Replace the aluminum profile data traceability data with the tampered production data to obtain complete aluminum profile data traceability data, and conduct quality traceability of the entire aluminum profile production process based on the complete aluminum profile data traceability data.

[0076] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A quality traceability management system for the entire production process of aluminum profiles, comprising a node definition unit (1), a blockchain construction unit (2), a real-time monitoring unit (3), a data comparison unit (4), a data query unit (5) and a quality traceability unit (6), characterized in that: The node definition unit (1) is used to perform node definition on the entire aluminum profile production process to obtain a production node set of the entire aluminum profile production process, wherein the production node set includes a raw material procurement node, a smelting workshop node, an extrusion molding workshop node, a heat treatment workshop node, a surface treatment workshop node, a quality inspection node and a transportation node, and transmits the production node set of the entire aluminum profile production process to the blockchain construction unit (2) and the real-time monitoring unit (3); The real-time monitoring unit (3) receives the production node set of the whole process of aluminum profile production transmitted by the node definition unit (1), and collects the production data of the production node set of the whole process of aluminum profile production by setting up monitoring equipment to obtain the production data of the production node set of the whole process of aluminum profile production, and transmits the production data of the production node set of the whole process of aluminum profile production to the blockchain construction unit (2) and the data query unit (5); The blockchain construction unit (2) receives the production node set of the entire aluminum profile production process transmitted by the node definition unit (1) and the production data of the production node set of the entire aluminum profile production process transmitted by the real-time monitoring unit (3), and constructs the blockchain of each production node in the production node set of the entire aluminum profile production process to obtain the blockchain of each production node in the production node set, and constructs a notarized blockchain to connect the blockchains of each production node in the production node set to obtain a blockchain network, and stores the production data corresponding to each production node in the production node set in the corresponding blockchain in the blockchain network, and transmits the blockchain network to the data comparison unit (4); The notarization blockchain is used for data transmission between the blockchains of each production node in the production node set. Data is uploaded to the notarization blockchain and then transmitted to the blockchain of each production node in the production node set. The notarized blockchain is used for data transmission between the blockchains of each production node in the production node set, including the following steps: A1. When the blockchain of each production node in the production node set initiates a cross-chain transaction, the cross-chain transaction is submitted to the notary node and enters the transaction waiting queue; A2. The notary with a P value of 1 in the notary node is elected as the notary to execute the cross-chain transaction, and is used to handle all aspects of the cross-chain transaction; A3. If the notary fails, the notary is forced to exit, and the P value of the notary is reduced by 1, that is, P=P-1, and the process returns to step A2; A4. The cross-chain transaction enters the corresponding transaction list, and the P value of the remaining notaries decreases by 1, that is, P=P-1, and when the notary node fails, it returns to step A2 and reassigns N=N-1; A5. When the cross-chain transaction succeeds or the transaction is terminated, the notary verifies the cross-chain transaction. If there is no error in the verification, the notary resets P=N and re-enters the notary node for sorting.

2. The whole process quality traceability management system of aluminum profile production according to claim 1 is characterized in that: The data query unit (5) receives the production data of the production node set of the entire aluminum profile production process transmitted by the real-time monitoring unit (3), and integrates the production data of the production node set of the entire aluminum profile production process to obtain an aluminum profile data traceability set. If the quality inspection data of the quality inspection node in the production node set for other production nodes in the production node set is lower than a preset quality inspection threshold, the aluminum profile data traceability data of the production node lower than the preset quality inspection threshold is obtained according to the aluminum profile data traceability set, and the aluminum profile data traceability data of the production node is transmitted to the data comparison unit (4) and the quality traceability unit (6); The data comparison unit (4) receives the blockchain network transmitted by the blockchain construction unit (2) and the aluminum profile data traceability data of the production node transmitted by the data query unit (5), obtains the production data of the production node from the blockchain network, and matches the production data of the production node with the aluminum profile data traceability data of the production node to obtain a matching degree between the two. If the matching degree is greater than a preset matching degree threshold, it indicates that the aluminum profile data traceability data of the production node has not been tampered with. Otherwise, it indicates that the aluminum profile data traceability data of the production node has been tampered with. The production data of the production node is compared with the aluminum profile data traceability data of the production node one by one to obtain the tampered production data, and the tampered production data and the corresponding production node are transmitted to the quality traceability unit (6).

3. The whole process quality traceability management system for aluminum profile production according to claim 2 is characterized in that: The quality tracing unit (6) receives the aluminum profile data tracing data of the production node transmitted by the data query unit (5) and the tampered production data and the corresponding production node transmitted by the data comparison unit (4), and replaces the aluminum profile data tracing data with the tampered production data to obtain complete aluminum profile data tracing data, and based on the complete aluminum profile data tracing data, performs quality tracing on the entire aluminum profile production process, and performs quality inspection on the production node corresponding to the tampered production data.

4. The whole process quality traceability management system for aluminum profile production according to claim 2 is characterized in that: The aluminum profile data traceability set is as follows: ； in, Represents the aluminum profile data traceability collection, The production data representing the set of production nodes in the entire production process of aluminum profiles, represents the union of sets, represents the raw material data set, represents the smelting production data set, represents the extrusion molding production data set, represents the heat treatment production data set, represents a collection of surface treatment production data, represents the quality inspection data set, represents a collection of transportation data, Represents the aluminum profile responsibility data set, Indicates the quality data of the feedback.

5. The whole process quality traceability management system for aluminum profile production according to claim 2 is characterized in that: Matching the production data of the production node with the aluminum profile data traceability data of the production node to obtain a matching degree between the two, including the following steps: B1. Define M initial data points, divide the production data and the aluminum profile data traceability data to obtain M layers of data items, and define the total dimension of the data items. The total dimension formula of the data items is as follows: ； in, represents the total dimension of the data item, Indicates the total number of data items at the mth level, represents the standard deviation of the data item at the mth level, represents the population standard deviation, represents the total number of cells in the data item, Represents each cell in the data item, Represents the mean of the entire data item; B2. Calculate the overall mean variance of each layer of data items. The overall mean variance formula of each layer of data items is as follows: ； in, represents the overall mean variance of each layer of data items, represents the weight of the data item at the mth layer, represents the standard deviation of the data item at the mth level, represents the total number of data items at the mth layer, and the total number of data items at the mth layer is calculated as follows: ； B3. Obtain the matching degree of the production data and the aluminum profile data traceability data based on the overall mean variance of each layer of data items through the mean absolute error.

6. A quality traceability management method for the whole process of aluminum profile production, which is applicable to the quality traceability management system for the whole process of aluminum profile production according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1. Define the nodes of the entire aluminum profile production process, including raw material procurement, melting workshop, extrusion molding workshop, heat treatment workshop, surface treatment workshop, quality inspection and transportation nodes; S2. Build the data of each production node into a blockchain, and build a notarized blockchain to connect the blockchains of each production node to obtain a blockchain network; S3. Integrate the production data into an aluminum profile data traceability set. If the quality inspection data of a production node is lower than a preset threshold, trace the aluminum profile data of the production node; S4. Matching the production data of the production node with the aluminum profile data traceability data of the production node to obtain a matching degree between the two. If the matching degree is less than or equal to a preset matching degree threshold, then comparing the production data of the production node with the aluminum profile data traceability data of the production node one by one to obtain the tampered production data; S5. Replace the aluminum profile data traceability data with the tampered production data to obtain complete aluminum profile data traceability data, and perform quality traceability on the entire aluminum profile production process based on the complete aluminum profile data traceability data.

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