Control method for defunctionalization of scrapped gas cylinders based on AI photography and blockchain

Abstract

The present invention discloses a control method for defunctionalization of scrapped gas cylinders based on AI photography and blockchain, and belongs to the field of liquefied petroleum gas cylinder traceability technology. It includes the following steps: Step S1, the filling unit shoots the two-dimensional image information of the uncoded gas cylinder through the mobile phone terminal to identify the steel stamp code of the gas cylinder; Step S2, the filling unit downloads the gas cylinder file information associated with the steel stamp code from the blockchain to the use platform according to the unique identity authentication information and the identified steel stamp code of the gas cylinder; Step S3, the filling unit performs the blockchain chain operation according to its own identity authority to complete the gas cylinder issuance process. The present invention provides a control method for defunctionalization of scrapped gas cylinders based on AI photography and blockchain. Through AI photography and blockchain technology, the defunctionalization of uncoded scrapped gas cylinders is realized, and the chain data is stored, and the encryption and decryption of the gas cylinder identity information and data is realized, so as to ensure that decentralized applications and data cannot be tampered with.

Description

Technical Field

[0001] The present invention relates to a control method for defunctionalizing scrapped gas cylinders based on AI photography and blockchain, and belongs to the technical field of liquefied petroleum gas cylinder traceability. Background Art

[0002] At present, during the use of liquefied petroleum gas cylinders, some lawless elements will deliberately destroy or pry off the barcodes on the cylinders to put the cylinders back on the market. These cylinders may have exceeded their service life or have defects. This practice affects the traceability and safety of the cylinders. The steel stamp used to identify the key information of the uniqueness of the cylinder can only be obtained by recycling the cylinders to a few designated locations, and the location must have an information management platform. However, the actual situation is that the general information management platform is only available in the manufacturer of the cylinder or a few designated locations. Each gas station does not have the information management platform, or the software used is inconsistent, or the permissions are inconsistent. In actual information security management, all permissions cannot be opened to all units. In actual operations, due to high costs and safety considerations, the information management platform will not be placed at each filling station. Therefore, once lawless elements destroy or pry off the barcode on the cylinder, each gas station will not be able to identify the identity information of the cylinder.

[0003] Some places now require that expired and scrapped gas cylinders be defunctionalized, and that gas cylinders that have exceeded their service life or have defects be scrapped, such as flattening or cutting and crushing gas cylinders, in order to prevent criminals from defunctionalizing gas cylinders that need to be scrapped. However, the premise of this process is that even if the QR code is damaged or pried open, the gas cylinder information can be accurately and efficiently identified, and its data can be ensured to be difficult to tamper with.

[0004] In the prior art, electronic readable labels are usually installed on gas cylinders before they leave the factory. Labels combining one-dimensional codes and two-dimensional codes (hereinafter referred to as two-dimensional code labels) are welded on the gas cylinder shields, and gas cylinder traceability and safety management are performed by scanning equipment to read the two-dimensional code information.

[0005] In summary, the above method still has the following difficulties:

[0006] 1. After the QR code label of the gas cylinder is pried open or damaged by criminals, due to cost and information security issues, it is impossible to effectively trace the scrapped gas cylinders that have entered the market in the current market environment by simply relying on the existing gas cylinder steel stamp and identification method. In other words, relying solely on the overall number on the steel stamp to identify whether to scrap the gas cylinder will result in a very large database and difficult to operate, which is costly and cannot be promoted in the market due to high management costs.

[0007] 2. The steel stamp number of the liquefied gas cylinder is the key information used to identify the uniqueness of the cylinder. Traditional steel stamp recognition methods often rely on manual means, which is not only inefficient but also prone to recognition errors.

[0008] 3. Traditional gas cylinder management has problems such as opaque information, easy data tampering, and difficulty in tracing responsibility. Summary of the invention

[0009] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a control method for the defunctionalization of scrapped gas cylinders based on AI photography and blockchain. Through AI photography and blockchain technology, the defunctionalization of uncoded scrapped gas cylinders is realized, and the data on the chain is stored to realize the encryption and decryption of the gas cylinder identity information and data, thereby ensuring that decentralized applications and data cannot be tampered with. In this process, the management cost is very low.

[0010] In order to solve the above technical problems, the technical solution of the present invention is:

[0011] A control method for defunctionalization of scrapped gas cylinders based on AI photography and blockchain, comprising the following steps:

[0012] Step S1: The filling unit uses a mobile phone to capture the two-dimensional image information of the uncoded gas cylinder and identify the steel stamp code of the gas cylinder;

[0013] Step S2: The filling unit downloads the cylinder file information associated with the steel stamp code from the blockchain to the use platform based on the unique identity authentication information and the identified steel stamp code of the cylinder;

[0014] Step S3: The filling unit performs blockchain operations based on its own identity authority to complete the gas cylinder issuance process. The inspection unit downloads data from the blockchain based on the unique identity authentication information and updates the data to the usage platform.

[0015] Step S4: The inspection unit performs blockchain operations based on its own identity authority to complete the gas cylinder receiving process and the gas cylinder scrapping process.

[0016] Furthermore, in step S1, the filling unit uses a mobile phone to capture the two-dimensional image information of the uncoded gas cylinder and identifies the steel stamp code of the gas cylinder, which specifically includes the following steps:

[0017] Step S11, using a mobile phone to take photos of the uncoded gas cylinder at multiple angles to obtain two-dimensional image information of the uncoded gas cylinder;

[0018] Step S12: Then, the two-dimensional image information of the uncoded gas cylinder is processed by a steel stamp recognition algorithm to identify the steel stamp information of the gas cylinder.

[0019] Furthermore, in step S12, the stamp recognition algorithm specifically includes the following steps:

[0020] In the image preprocessing stage, the noise of the collected two-dimensional image information is first removed; then the stamped numbers in the image are highlighted through noise removal, contrast enhancement and edge sharpening operations; the comprehensive expression of image preprocessing is:

[0021] ;

[0022] in, represents the original input image, and represents the pixel value at the xth column and yth row in the image, represents the noise removal operation, represents the contrast enhancement operation, represents edge sharpening operation, It is the result after noise removal, contrast enhancement and edge sharpening operations;

[0023] Using a deep learning-based target detection model to divide the image into multiple grids, obtain multiple prediction boxes, and simultaneously perform image classification and positioning through the multiple prediction boxes;

[0024] The target detection model predicts whether each prediction box contains a stamped digital target, and detects the position and category of the stamped digital target. For each prediction box, it is screened according to the confidence level, and only the position results of the stamped digital targets with high confidence are retained; the comprehensive expression for detecting the position of the stamped digital target is:

[0025] ;

[0026] in, Indicates the detection of steel stamp digital targets. Indicates the removal of redundant boxes. It is the position of the steel stamp digits after screening and optimization;

[0027] Each valid prediction box contains a category label, which corresponds to the stamped number. According to the category label of each prediction box and the position of the stamped number target in the image, the recognized stamped number is finally output.

[0028] Furthermore, the gas cylinder file information includes the manufacturing unit, production batch, production date and model of the gas cylinder.

[0029] Furthermore, the blockchain on-chain operation in step S3 and step S4 includes a gas cylinder identity information storage stage and a data upload stage. After the identity information of the gas cylinder is stored in the gas cylinder identity information storage stage, the data upload stage is entered to encrypt the data and upload it to the blockchain.

[0030] Furthermore, in the gas cylinder identity information storage stage, an on-chain parent group is used to record the identity information of the gas cylinder, and the on-chain parent group includes a first hash value and a second hash value.

[0031] Furthermore, the first hash value is used to record the production date of the gas cylinder, and the first hash values ​​of all qualified gas cylinders manufactured on the same day are the same;

[0032] On the basis of the first Hash value, a first up-chain alarm value, a second up-chain alarm value and a third up-chain alarm value are set, the first up-chain alarm value is incremented by 1 node on the basis of the first Hash value, the second up-chain alarm value is incremented by 1 node on the basis of the first up-chain alarm value, the third up-chain alarm value is incremented by 1 node on the basis of the second up-chain alarm value, and each of the nodes is a specified gas cylinder service life or number of days;

[0033] A fourth on-chain alarm value is provided based on the first hash value, and the fourth on-chain alarm value is used to alarm for scrapped gas cylinders, which are gas cylinders that have been used for more than the maximum service life or are found to need to be scrapped by manual or mobile phone photography.

[0034] Furthermore, the second hash value is used to record the unique ID information of each gas cylinder. The second hash value of each gas cylinder is different. The ID information includes the manufacturer, manufacturing information and inspection information. The second hash value includes multiple sub-data, and the multiple sub-data form a sub-data group.

[0035] Furthermore, the blockchain downloading data in step S3 includes a security verification stage and a data sending stage. After completing the safety inspection of the gas cylinder in the security verification stage, the data sending stage is entered, and the data in the blockchain is decrypted and downloaded.

[0036] Further, the safety verification stage uses a downlink subgroup to perform safety verification on the gas cylinder, the downlink subgroup includes a first downlink safety value, a second downlink safety value and a third downlink safety value, the first downlink safety value corresponds to the first uplink alarm value, the second downlink safety value corresponds to the second uplink alarm value, the third downlink safety value corresponds to the third uplink alarm value, and the service life of each gas cylinder is verified by the first downlink safety value, the second downlink safety value and the third downlink safety value in turn to determine whether each gas cylinder is within the safe service life;

[0037] The down-chain subgroup also includes a down-chain maintenance safety value, and the down-chain maintenance safety value is used to record the gas cylinders that can continue to be safely used after being returned to the factory for repair.

[0038] The present invention adopts the above technical solution, applies the parent group area module and the sub-group area module, data encryption and blockchain technology, and combines AI photography technology to identify the stamped code information of the uncoded gas cylinders, so as to achieve effective and safe defunctionalization of the uncoded scrapped gas cylinders. This technology is designed to ensure that the scrapped gas cylinders are effectively and safely handled, and prevent the scrapped gas cylinders from returning to the market and causing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a flow chart of a control method for defunctionalizing scrapped gas cylinders based on AI photography and blockchain according to the present invention;

[0040] Figure 2 It is a structural diagram of the uplink parent group and the downlink child group of the present invention. DETAILED DESCRIPTION

[0041] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0042] like Figure 1 As shown, this embodiment provides a control method for defunctionalization of scrapped gas cylinders based on AI photography and blockchain, which includes the following steps:

[0043] Step S1: The filling unit uses a mobile phone to capture the two-dimensional image information of the uncoded gas cylinder and identify the steel stamp code of the gas cylinder; specifically, the steps include:

[0044] Step S11, using a mobile phone to take photos of the uncoded gas cylinder at multiple angles to obtain two-dimensional image information of the uncoded gas cylinder;

[0045] Step S12: Then, the two-dimensional image information of the uncoded gas cylinder is processed by a steel stamp recognition algorithm to identify the steel stamp number of the gas cylinder; wherein the steel stamp recognition algorithm specifically includes the following steps:

[0046] Since the cylinder steel stamp code is a hollow number, there are non-hollow areas, background areas, stains and reflections caused by light on the image taken by the mobile phone, so the image must be preprocessed first. In the image preprocessing stage, the collected two-dimensional image information is firstly de-noised to eliminate the interference caused by factors such as non-hollow areas, background areas, stains and reflections; then, the steel stamp numbers in the image are highlighted through noise removal, contrast enhancement and edge sharpening operations, thereby improving the accuracy of subsequent recognition; the comprehensive expression of image preprocessing is:

[0047] ;

[0048] in, represents the original input image, and represents the pixel value at the xth column and yth row in the image, represents the noise removal operation, represents the contrast enhancement operation, represents edge sharpening operation, This is the result after noise removal, contrast enhancement and edge sharpening operations; each step will further optimize the image quality and lay the foundation for the accurate recognition of hollowed-out steel-printed numbers.

[0049] The deep learning-based object detection model is used to divide the image into multiple grids to obtain multiple prediction boxes, and the image classification and positioning are performed simultaneously through multiple prediction boxes;

[0050] The target detection model predicts whether each prediction box contains a stamped digital target, and detects the position and category of the stamped digital target. For each prediction box, it is screened according to the confidence level, and only the position results of the stamped digital targets with high confidence are retained; the comprehensive expression for detecting the position of the stamped digital target is:

[0051] ;

[0052] in, Indicates the detection of steel stamp digital targets. Indicates the removal of redundant boxes. After this series of steps, the final result is , It is the position of the steel stamp digits after screening and optimization;

[0053] Each valid prediction box contains a category label, which corresponds to the stamped number. For example, label ID 0 represents the number "0", and label ID 1 represents the number "1". Based on the category label of each prediction box and the position of the stamped number target in the image, the recognized stamped number is finally output.

[0054] Step S2: The filling unit downloads the cylinder file information associated with the steel stamp code from the blockchain to the user platform based on the unique identity authentication information and the identified cylinder steel stamp code. The cylinder file information is compiled by the manufacturing unit, including the manufacturing unit, production batch, production date and model of the cylinder.

[0055] Step S3: The filling unit performs blockchain operations based on its own identity authority to complete the gas cylinder issuance process. The inspection unit downloads data from the blockchain based on the unique identity authentication information and updates the data to the usage platform.

[0056] Step S4: The inspection unit performs blockchain operations based on its own identity authority to complete the gas cylinder receiving process and the gas cylinder scrapping process.

[0057] The blockchain uploading operation in step S3 and step S4 of this embodiment includes a gas cylinder identity information storage stage and a data uploading stage. After the identity information of the gas cylinder is stored in the gas cylinder identity information storage stage, the data uploading stage is entered to encrypt the data and upload it to the blockchain.

[0058] Specifically: During the storage phase of the gas cylinder identity information, the parent group on the chain is used to record the identity information of the gas cylinder, such as Figure 2 As shown, the uplink parent group includes a first hash value and a second hash value.

[0059] The first hash value is used to record the production date of the gas cylinder, but does not record the manufacturer of the cylinder. All gas cylinders produced on the same day are determined by the first hash value, that is, the first hash value of all qualified gas cylinders produced on the same day is the same, which is used for subsequent annual inspections, alarms and other unified "recycling function" data records. Regardless of which manufacturer produces the gas cylinder, in units of year, month, and day, there are only 365 hash values ​​in 365 days, and only 36,500 hash values ​​in a century. Taking advantage of its tamper-proof advantages, it continues and records data;

[0060] On the basis of the first hash value, the first chain alarm value, the second chain alarm value and the third chain alarm value are set. The first chain alarm value is incremented by 1 node on the basis of the first hash value, the second chain alarm value is incremented by 1 node on the basis of the first chain alarm value, and the third chain alarm value is incremented by 1 node on the basis of the second chain alarm value. Each node can be set to the specified cylinder service life or number of days according to national standards. Generally, according to the national regulations of my country, the service life of the cylinder is up to 12 years, and the alarm value can be set according to 4 years as a node. The annual inspection signal is uploaded on the information management platform for each filling inspection, and all data are uploaded to the cylinder quality and safety traceability system;

[0061] A fourth on-chain alarm value is provided based on the first hash value, and is used to alarm for scrapped gas cylinders, which are gas cylinders that have been used for more than the maximum service life or are found to need to be scrapped by manual or mobile phone photography. The identity information of the scrapped gas cylinders is then directly uploaded to the gas cylinder quality information management system, and the gas cylinder factory is notified to directly scrap them.

[0062] The second hash value is used to record the unique ID information of each gas cylinder. Here, the second hash value of each gas cylinder is different. The ID information includes the manufacturer, manufacturing information, and inspection information. The second hash value includes multiple sub-data, and multiple sub-data form a sub-data group. Due to the huge database, the second hash value is only recorded in the gas cylinder quality and safety traceability system. The system is generally stored in the inspection station, gas cylinder manufacturer or market supervision bureau, but not in the filling station, because there are many filling stations and the cost is too high. Only when you need to query the traceability of all links in the unique ID information, you need to retrieve the information.

[0063] The data encryption algorithm of this embodiment is:

[0064] Use a symmetric encryption algorithm to encrypt, and then upload the encrypted data.

[0065] Assume the stamp code , the symmetric encryption algorithm uses a key K to encrypt the data and obtain the encrypted data C:

[0066] ;

[0067] in, For the encrypted steel seal encoding data, It represents the process of encrypting the stamp code D using the key K. The initialization and key generation process is as follows:

[0068] Generate a random key K and preprocess the key to obtain an encryption key :

[0069] .

[0070] Divide the stamp code D into multiple blocks of equal size , the size of each block is equal to the block size of the SM4 algorithm. If the data length is not an integer multiple of the block size, make sure that the last block has been properly padded.

[0071] First, for the first data block With the random number IV, calculate ;

[0072] Using SM4 encryption function encryption: .

[0073] Then for the subsequent data blocks Using the previous ciphertext block, we can calculate:

[0074] ;

[0075] Finally, output the final ciphertext .

[0076] The blockchain downloading data in step S3 of this embodiment includes a security verification stage and a data sending stage. After completing the safety inspection of the gas cylinder in the security verification stage, the data sending stage is entered, and the data in the blockchain is decrypted and downloaded using the SM4 secret key.

[0077] Specifically: During the safety verification phase, the lower chain group is used to perform safety verification on the gas cylinders, such as Figure 2 As shown, the downlink subgroup includes a first downlink safety value, a second downlink safety value and a third downlink safety value, the first downlink safety value corresponds to the first uplink alarm value, the second downlink safety value corresponds to the second uplink alarm value, and the third downlink safety value corresponds to the third uplink alarm value, and the service life of each gas cylinder is verified by the first downlink safety value, the second downlink safety value and the third downlink safety value in turn to determine whether each gas cylinder is within the safe service life;

[0078] The down-chain subgroup also includes down-chain maintenance safety values, which are used to record gas cylinders that can continue to be safely used after being returned to the factory for repair.

[0079] In this embodiment, blockchain identity authentication does not rely on a single centralized authentication agency, but rather the authentication process is jointly maintained and verified by all nodes participating in the network. This decentralized nature improves the stability and security of the system because no central node can be attacked or data tampered with. The blockchain network uses public key encryption algorithms to protect data security during the authentication process. Each user has a public-private key pair, with the private key used for signing and the public key for verification. This encryption method ensures the integrity and authenticity of the data, as only the user holding the private key can sign the data, while the public key can be publicly used to verify the validity of the signature.

[0080] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A control method for defunctionalization of scrapped gas cylinders based on AI photography and blockchain, characterized in that: It includes the following steps: Step S1: The filling unit uses a mobile phone to capture the two-dimensional image information of the uncoded gas cylinder and identify the steel stamp code of the gas cylinder; Step S2: The filling unit downloads the cylinder file information associated with the steel stamp code from the blockchain to the use platform based on the unique identity authentication information and the identified steel stamp code of the cylinder; Step S3: The filling unit performs blockchain operations based on its own identity authority to complete the gas cylinder issuance process. The inspection unit downloads data from the blockchain based on the unique identity authentication information and updates the data to the usage platform. Step S4: The inspection unit performs blockchain operations based on its own identity authority to complete the gas cylinder receiving process and the gas cylinder scrapping process; The blockchain uploading operation in step S3 and step S4 includes a gas cylinder identity information storage stage and a data uploading stage. After the gas cylinder identity information is stored in the gas cylinder identity information storage stage, the data uploading stage is entered to encrypt the data and upload it to the blockchain; The gas cylinder identity information storage stage uses an on-chain parent group to record the identity information of the gas cylinder, and the on-chain parent group includes a first hash value and a second hash value; The first hash value is used to record the production date of the gas cylinder, and the first hash values ​​of all qualified gas cylinders manufactured on the same day are the same; On the basis of the first Hash value, a first up-chain alarm value, a second up-chain alarm value and a third up-chain alarm value are set, the first up-chain alarm value is incremented by 1 node on the basis of the first Hash value, the second up-chain alarm value is incremented by 1 node on the basis of the first up-chain alarm value, the third up-chain alarm value is incremented by 1 node on the basis of the second up-chain alarm value, and each of the nodes is a specified gas cylinder service life or number of days; A fourth on-chain alarm value is provided based on the first hash value, and the fourth on-chain alarm value is used to alarm for scrapped gas cylinders, which are gas cylinders that have been used for more than the maximum service life or are found to need to be scrapped by manual or mobile phone photography.

2. The control method for defunctionalization of scrapped gas cylinders based on AI photography and blockchain according to claim 1 is characterized in that: In step S1, the filling unit uses a mobile phone to capture the two-dimensional image information of the uncoded gas cylinder and identify the steel stamp code of the gas cylinder, which specifically includes the following steps: Step S11, using a mobile phone to take photos of the uncoded gas cylinder at multiple angles to obtain two-dimensional image information of the uncoded gas cylinder; Step S12: Then, the two-dimensional image information of the uncoded gas cylinder is processed by a steel stamp recognition algorithm to identify the steel stamp information of the gas cylinder.

3. The control method for defunctionalization of scrapped gas cylinders based on AI photography and blockchain according to claim 2 is characterized in that: In step S12, the stamp recognition algorithm specifically includes the following steps: In the image preprocessing stage, the noise of the collected two-dimensional image information is first removed; then the stamped numbers in the image are highlighted through noise removal, contrast enhancement and edge sharpening operations; the comprehensive expression of image preprocessing is: ； in, represents the original input image, and represents the pixel value at the xth column and yth row in the image, represents the noise removal operation, represents the contrast enhancement operation, represents the edge sharpening operation, It is the result after noise removal, contrast enhancement and edge sharpening operations; Using a deep learning-based target detection model to divide the image into multiple grids, obtain multiple prediction boxes, and simultaneously perform image classification and positioning through the multiple prediction boxes; The target detection model predicts whether each prediction box contains a stamped digital target, and detects the position and category of the stamped digital target. For each prediction box, it is screened according to the confidence level, and only the position results of the stamped digital targets with high confidence are retained; the comprehensive expression for detecting the position of the stamped digital target is: ； in, Indicates the detection of steel stamp digital targets. Indicates the removal of redundant boxes. It is the position of the steel stamp digits after screening and optimization; Each valid prediction box contains a category label, which corresponds to the stamped number. According to the category label of each prediction box and the position of the stamped number target in the image, the recognized stamped number is finally output.

4. The control method for defunctionalization of scrapped gas cylinders based on AI photography and blockchain according to claim 1 is characterized in that: The gas cylinder file information includes the manufacturing unit, production batch, production date and model of the gas cylinder.

5. The control method for defunctionalization of scrapped gas cylinders based on AI photography and blockchain according to claim 1 is characterized in that: The second hash value is used to record the unique ID information of each gas cylinder. The second hash value of each gas cylinder is different. The ID information includes the manufacturer, manufacturing information and inspection information. The second hash value includes multiple sub-data, and the multiple sub-data form a sub-data group.

6. The control method for defunctionalization of scrapped gas cylinders based on AI photography and blockchain according to claim 1 is characterized in that: The blockchain downloading data in step S3 includes a security verification stage and a data sending stage. After completing the security inspection of the gas cylinder in the security verification stage, the data sending stage is entered, and the data in the blockchain is decrypted and downloaded.

7. The control method for defunctionalization of scrapped gas cylinders based on AI photography and blockchain according to claim 6 is characterized in that: The safety verification stage uses a downlink subgroup to perform safety verification on the gas cylinder, and the downlink subgroup includes a first downlink safety value, a second downlink safety value, and a third downlink safety value. The first downlink safety value corresponds to the first uplink alarm value, the second downlink safety value corresponds to the second uplink alarm value, and the third downlink safety value corresponds to the third uplink alarm value. The service life of each gas cylinder is verified by the first downlink safety value, the second downlink safety value, and the third downlink safety value in turn to determine whether each gas cylinder is within the safe service life. The down-chain subgroup also includes a down-chain maintenance safety value, and the down-chain maintenance safety value is used to record the gas cylinders that can continue to be safely used after being returned to the factory for repair.

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