Machine-readable digital reference material certificate generation method

Abstract

The present invention relates to the fields of metrology and reference material management. Disclosed is a machine-readable digital reference material certificate generation method, comprising: obtaining management data, core data, an annotation, and a document attachment on the basis of original information of a reference material; and performing timestamp endorsement and CA certificate signing to obtain a digital signature, encapsulating the management data, the core data, the annotation, the document attachment, and the digital signature to obtain a complete digital reference material certificate, and validating same to complete generation of a digital reference material certificate. In the present invention, a traditional paper-based and PDF-format reference material certificate can be converted into a machine-readable digital reference material certificate in XML format, and original information of a reference material therein can be extracted and encapsulated into a digital reference material certificate, thereby improving the management and utilization efficiency of reference material certificates in the digital world, and enabling application of the reference material certificates in various application scenarios.

Description

A method for generating machine-readable digital standard substance certificates Technical Field

[0001] This invention belongs to the field of metrology and standard substance management, and specifically relates to a method for generating machine-readable digital standard substance certificates. Background Technology

[0002] In the digital age, the digital transformation of metrology has become a global activity. For national metrology institutions, supporting digital technologies has become an urgent task. Typically, the measurement services provided by national metrology institutions enable clients to obtain documents traceable to the International System of Units (SI), such as calibration certificates and reports. These documents require manual review and processing of the provided calibration data, which may involve extracting relevant data from text sections of certificates. With the rapid development of digital and communication technologies, faster and more automated information transmission is crucial for technological advancement.

[0003] Therefore, the digital delivery of measurement service data is a key and fundamental digital technology of concern to national metrology institutions. To this end, the German Federal Institute of Physics and Technology (PTB), under the European Metrology Innovation and Research Program (EMPIR) 17IND02 SmartCom project, developed a universal and flexible Digital Calibration Certificate (DCC) structure. DCC is an important information carrier for traceability in the digital world; its format is unified and standardized, and it is machine-readable and machine-operable. PTB has done a great deal of pioneering work in the development of the DCC metamodel and best practices, and has hosted four international DCC conferences, making significant contributions to the promotion and popularization of DCC worldwide. In fact, DCC implements an XML framework for generating digital calibration certificates. DCC is still under development and has been updated to version 3.3.0. However, due to the differences in information, reference standards, and dissemination requirements involved in reference materials, the current version of DCC is not suitable for Digital Reference Material Certificates (DRMC). A method for generating digital certificates for reference materials is needed to convert reference material certificates into machine-readable certificates to support the digital delivery of reference material certificates. Summary of the Invention

[0004] To address the aforementioned shortcomings in the existing technology, this invention provides a machine-readable digital standard material certificate generation method, which solves the problem that existing digital calibration certificates cannot be used with standard material information.

[0005] To achieve the above-mentioned objectives, the technical solution adopted by this invention is: a method for generating machine-readable digital standard material certificates, comprising the following steps:

[0006] S1: Obtain the original information of the standard material;

[0007] S2: Based on the original information of the reference material, obtain the management data, main data, annotations, and document attachments;

[0008] S3: Based on management data, main data, annotations, and document attachments, encapsulate an incomplete, machine-readable digital standard substance certificate;

[0009] S4: Timestamp and CA certificate signature are applied to the incomplete digital reference material certificate to obtain the digital signature of the digital reference material certificate.

[0010] S5: Fill the incomplete digital standard material certificate with the digital signature to obtain a machine-readable complete digital standard material certificate;

[0011] S6: Perform data splitting and verification on the complete digital reference material certificate to generate the digital reference material certificate.

[0012] The beneficial effects of this invention are as follows: This invention proposes a machine-readable digital reference material certificate generation method, which can convert traditional paper and PDF format reference material certificates into machine-readable digital reference material certificates in XML format, perform automated data processing, improve the management and utilization efficiency of reference material certificates in the digital world, and enable them to be applied to various application scenarios. It facilitates operations such as traceability of measurement values, value transfer, data exchange, calibration of gas analysis instruments, evaluation and verification of analysis methods, etc., and solves the problem that the content of traditional paper and PDF format reference material certificates is not machine-readable and is not easy to automate.

[0013] Furthermore: the complete digital standard substance certificate is in XML format;

[0014] The beneficial effect of the above-mentioned further solution is that it encapsulates the digital standard certificate in XML format, making it machine-readable and giving the digital standard certificate machine-readable properties.

[0015] Furthermore, the management data includes: dcrmSoftware (digital reference material certificate generation software information), pid (digital reference material certificate pid value), crmName (reference material name), crmCode (reference material number), batchNumber (reference material batch number), certificationDate (certification date), expiredDate (digital reference material certificate validity period to expiration date), producer (reference material manufacturer), and customer (reference material customer).

[0016] The beneficial effects of the above-mentioned further solutions are: by dividing the specific content of management data, it is easier to extract valid basic data information of reference materials from reference material certificates, filter out invalid reference material information, and improve the data efficiency of digital reference material certificates.

[0017] Furthermore: the main data includes: description of Material and Intended Use (indication of intended use of the standard material), preparation (sample preparation), traceability and certification (traceability and determination method), certified value and uncertainty (characteristic value and uncertainty), homogeneity and stability (testing), and instructions for use (instructions for use).

[0018] The instructions for use include information on the packaging, storage, and usage of the standard substance.

[0019] The beneficial effects of the above-mentioned further solutions are as follows: by dividing the main data from the standard substance certificate, the main data of the standard substance can be extracted, the efficiency of using digital standard substance certificates can be improved, and the preparation process and state of the standard substance can be quickly obtained.

[0020] Furthermore, the digital signature includes: DigestValue (digital standard substance certificate digest value), SignatureValue (signature value), X509Certificate (CA certificate for signing), KeyInfo (private key information for signing), SigningTime (signing time), and SignatureTimeStamp (signing timestamp data).

[0021] The beneficial effects of the above-mentioned further solutions are: digital signatures using CA certificates and timestamps can improve the security of digital standard substance certificates and improve the efficiency and accuracy of data processing. Attached Figure Description

[0022] Figure 1 is a flowchart of a machine-readable digital standard material certificate generation method;

[0023] Figure 2 is a framework diagram of digital reference material certificates. Detailed Implementation

[0024] The specific embodiments of the present invention are described below to enable those skilled in the art to understand the present invention. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, various changes are obvious as long as they are within the spirit and scope of the present invention as defined and determined by the appended claims. All inventions utilizing the concept of the present invention are protected.

[0025] Figure 1 shows a flowchart of a machine-readable digital standard material certificate generation method, which includes the following steps:

[0026] S1: Obtain the original information of the standard material;

[0027] S2: Based on the original information of the reference material, obtain the management data, main data, annotations, and document attachments;

[0028] S3: Based on management data, main data, annotations, and document attachments, encapsulate an incomplete, machine-readable digital standard substance certificate;

[0029] S4: Timestamp and CA certificate signature are applied to the incomplete digital reference material certificate to obtain the digital signature of the digital reference material certificate.

[0030] S5: Fill the incomplete digital standard material certificate with the digital signature to obtain a machine-readable complete digital standard material certificate;

[0031] S6: Perform data splitting and verification on the complete digital reference material certificate to generate the digital reference material certificate.

[0032] In S1, the original information of the reference material can be obtained from traditional paper reference material certificates and PDF reference material certificates.

[0033] In S2, management data, main data, annotations, and document attachments are extracted from the original information of the standard material.

[0034] In S3, based on each individual management data, main data, annotations, and document attachments, a digital standard substance certificate in XML format is encapsulated to make it machine-readable. At this point, the digital signature of the digital certificate is still missing.

[0035] In S4, the incomplete digital reference material certificate is timestamped and signed with a CA certificate to obtain the digital signature of the digital reference material certificate.

[0036] In one embodiment of the present invention, the digital standard material certificate is timestamped in accordance with the international electronic timestamp standard specification RFC3161;

[0037] Figure 2 shows the framework diagram of a digital reference material certificate. A digital reference material certificate includes: management data, main data, annotations, document attachments, and digital signature. Among them, management data and main data are mandatory, while annotations, document attachments, and digital signature are optional.

[0038] The management data includes: dcrmSoftware (digital reference material certificate generation software information), pid (digital reference material certificate pid value), crmName (reference material name), crmCode (reference material number), batchNumber (reference material batch number), certificationDate (certification date), expiredDate (digital reference material certificate validity period to expiration date), producer (reference material manufacturer), and customer (reference material customer).

[0039] The main data includes: description of Material and Intended Use, preparation of sample, traceability and certification, certified value and uncertainty, homogeneity and stability testing, and instructions for use.

[0040] Instructions for Use include information on the packaging, storage, and usage of the standard substance.

[0041] Digital signatures include: DigestValue (Digital Standard Material Certificate Digest Value), SignatureValue (Signature Value), X.509Certificate (CA Certificate for Signing), KeyInfo (Private Key Information for Signing), SigningTime (Signing Time), and SignatureTimeStamp (Signing Timestamp Data).

[0042] The annotations can store annotation information from the standard substance certificate, and the document attachments can store the attachment files of the standard substance certificate in binary base64 format.

[0043] In S5, the digital signature is filled into the incomplete digital standard substance certificate to obtain the complete digital standard substance certificate. The complete digital standard substance certificate is in XML format and is machine readable.

[0044] In S6, the complete digital standard substance certificate is split and verified. The data splitting yields timestamp data, CA certificate for signing, signature value, management data, main data, annotations, and document attachments, which are then verified separately.

[0045] In one embodiment of the present invention, the certificate for synthetic carbon dioxide reference material in air is digitized. The original information of the reference material is obtained from the paper carbon dioxide reference material certificate, and management data, main data, annotations, document attachments, and a digital signature are obtained. Using a machine-readable digital reference material certificate generation method provided by the present invention, a digital reference material certificate in XML format is finally encapsulated. The management data and main data are as follows:

[0046] The management data includes: dcrmSoftware is nimDCRMService, pid is nim-dcrm-pid-2002203090530001, crmName is "XX Institute of Metrology", crmCode is "NIM-RM9095", batchNumber is "200220309053", certificationDate is "2022-08-07", expiredDate is "2023-08-06", producer is "XX Institute of Metrology", and customer is "XX Institute of Metrology".

[0047] The main data includes: Description of Material and Intended Use: "This gas standard reference material is a national-level standard reference material used for the transfer of gas analysis measurement values, for calibrating gas analysis instruments, evaluating and verifying analytical methods, arbitrating analytical results, and ensuring the traceability and reliability of measurement results." Preparation: "This gas standard reference material is prepared using carbon dioxide, oxygen, nitrogen, and argon gases with accurately determined purity as raw materials, by gravimetric method." Traceability and Certification: "The gravimetric value of this gas standard reference material is used as the standard value, and the value is verified using a spectrometer. The mole fraction of each component is the ratio of the number of moles of that component to the total number of moles of all components. All measuring instruments used in the preparation and determination process have been verified or calibrated to ensure traceability to the national metrological standard." Certified Value and Uncertainty: "The characteristic value is 480.4 × 10⁻⁶." -6The unit is mol / mol, the uncertainty is 0.1%, and the unit is %; "homogeneityAndStabilityTesting" states, "The homogeneity and stability of this standard reference material were evaluated during its development, and the results were good. This standard reference material is valid for 12 months from the date of value determination." "InstructionsForUse" states, "This gaseous standard reference material is packaged in a 10-liter gas cylinder with a filling pressure of 15 MPa and a lower limit for operating pressure of 3.0 MPa. An appropriate pressure regulator should be selected during use. Strictly prevent system leakage and contamination. The gas cylinder should be kept away from heat sources, avoid direct sunlight, and prevent impact."

[0048] By converting traditional paper and PDF standard substance certificates into XML-format digital standard substance certificates, they can be conveniently applied in the digital world for operations such as traceability, value transfer, data exchange, calibration of gas analysis instruments, evaluation and testing of analytical methods, etc. This makes the standard substance certificates machine-readable, thereby improving efficiency and automating the process.

[0049] The beneficial effects of this invention are as follows: This invention proposes a machine-readable digital reference material certificate generation method, which can convert traditional paper and PDF format reference material certificates into machine-readable digital reference material certificates in XML format, perform automated data processing, improve the management and utilization efficiency of reference material certificates in the digital world, and enable them to be applied to various application scenarios. It facilitates operations such as traceability of measurement values, value transfer, data exchange, calibration of gas analysis instruments, evaluation and verification of analysis methods, etc., and solves the problem that the content of traditional paper and PDF format reference material certificates is not machine-readable and is not easy to automate.

Claims

1. A machine-readable digital reference material certificate generation method, characterized by, Includes the following steps: S1: Obtain the original information of the standard material; S2: Based on the original information of the reference material, obtain the management data, main data, annotations, and document attachments; S3: Based on management data, main data, annotations, and document attachments, encapsulate an incomplete, machine-readable digital standard substance certificate; S4: Timestamp and CA certificate signature are applied to the incomplete digital reference material certificate to obtain the digital signature of the digital reference material certificate. S5: Fill the incomplete digital standard material certificate with the digital signature to obtain a machine-readable complete digital standard material certificate; S6: Perform data splitting and verification on the complete digital reference material certificate to generate the digital reference material certificate.

2. The machine-readable digital standard material certificate generation method of claim 1, wherein, The complete digital standard material certificate is in XML format.

3. The machine-readable digital standard material certificate generation method of claim 1, wherein, The management data includes: dcrmSoftware (digital reference material certificate generation software information), pid (digital reference material certificate pid value), crmName (reference material name), crmCode (reference material number), batchNumber (reference material batch number), certificationDate (certification date), expiredDate (digital reference material certificate validity period to expiration date), producer (reference material manufacturer), and customer (reference material customer).

4. The machine-readable digital standard material certificate generation method of claim 1, wherein, The main data includes: description of Material and Intended Use (indication of intended use of the reference material), preparation (sample preparation), traceability and certification (traceability and determination method), certified value and uncertainty (characteristic values ​​and uncertainties), homogeneity and stability (testing), and instructions for use (instructions for use). The instructions for use include information on the packaging, storage, and usage of the standard substance.

5. The machine-readable digital standard material certificate generation method of claim 1, wherein, The digital signature includes: DigestValue (Digital Standard Material Certificate Digest Value), SignatureValue (Signature Value), X509Certificate (CA Certificate for Signing), KeyInfo (Private Key Information for Signing), SigningTime (Signing Time), and SignatureTimeStamp (Signing Timestamp Data).

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