Machine-readable digital standard substance certificate generation method

Abstract

The invention discloses a method for generating a machine-readable digital standard substance certificate, which belongs to the field of metering and standard substance management and comprises the following steps of: obtaining management data, main body data, annotations and document attachments according to original information of a standard substance; and performing timestamp endorsement and CA certificate signature to obtain a digital signature, packaging the management data, the main body data, the annotation, the document attachment and the digital signature to obtain a complete digital standard substance certificate, and verifying the complete digital standard substance certificate to complete generation of the digital standard substance certificate. According to the method, standard substance certificates in traditional paper and PDF formats can be converted into machine-readable digital standard substance certificates in XML formats, standard substance original information in the machine-readable digital standard substance certificates is extracted and packaged into digital standard substance certificates, the management and utilization efficiency of the standard substance certificates in the digital world is improved, and the standard substance certificates can be applied to various application scenes.

Description

Technical Field

[0001] The invention belongs to the field of metrology and standard material management, and in particular relates to a method for generating a machine-readable digital standard material certificate. Background Art

[0002] Entering the digital age, the digital transformation of metrology has become a worldwide activity. For national metrology institutions, supporting digital technology has become an urgent task. Usually, the measurement services provided by national metrology institutions enable customers to obtain documents traceable to the International System of Units (SI), such as calibration certificates, calibration reports, etc. These documents require manual review and processing of the calibration data and other information provided, which may involve extracting relevant data from the text paragraphs of the certificate. With the rapid development of digital technology and communication technology, faster and more automated information transmission is essential to technological development.

[0003] Therefore, the digital delivery of measurement service data is a key and fundamental digital technology that national metrology institutions are concerned about. To this end, the German Federal Institute of Physics and Technology (PTB) has developed a universal and flexible digital calibration certificate (DCC) structure under the leadership of the European Metrology Innovation and Research Program (EMPIR) 17IND02SmartCom project. DCC is an important information carrier for value traceability in the digital world. The format is unified and standardized, and it is machine-readable and machine-operable. PTB has done a lot of pioneering work in the development of DCC metamodels and best practices, and has hosted four DCC international conferences, making a lot of contributions to the promotion and popularization of DCC around the world. In fact, DCC implements an XML architecture for generating digital calibration certificates. DCC is still under continuous development and has been updated to version 3.3.0. However, due to the different information, reference standards and dissemination requirements involved in standard materials, the current version of DCC is not suitable for digital reference material certificates (DRMC). A method for generating digital certificates of standard materials is needed to convert standard material certificates into machine-readable standard material certificates to support the digital delivery of standard material certificates. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a method for generating a machine-readable digital reference material certificate, which solves the problem that the existing digital calibration certificate cannot be applied to reference material information.

[0005] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is: a method for generating a machine-readable digital reference material certificate, comprising the following steps:

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

[0007] S2: According to the original information of the reference material, management data, main data, notes and document attachments are obtained;

[0008] S3: Encapsulate and obtain a machine-readable incomplete digital reference material certificate based on the management data, main body data, annotations, and document attachments;

[0009] S4: Timestamp and CA certificate sign the incomplete digital reference material certificate to obtain the digital signature of the digital reference material certificate;

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

[0011] S6: split and verify the data of the complete digital reference material certificate to complete the generation of the digital reference material certificate.

[0012] The beneficial effects of the present invention are as follows: the present invention proposes a method for generating a machine-readable digital standard material certificate, which can convert a traditional paper and PDF format standard material certificate into a machine-readable digital standard material certificate in XML format, perform data automation processing, and improve the management and utilization efficiency of standard material certificates in the digital world, so that it can be applied to various application scenarios, and is convenient for operations such as value traceability, value transfer, data exchange, calibration of gas analysis instruments, evaluation and inspection of analysis methods, etc., which solves the problem that the content of traditional paper and PDF format standard material certificates is not machine-readable and is not easy to automate.

[0013] Further: the complete digital reference material certificate is in XML format;

[0014] The beneficial effect of the above further solution is: the digital standard certificate is encapsulated in XML format so that it can be read by a machine, making the digital standard certificate machine-readable.

[0015] Further: the management data includes: dcrmSoftware digital standard material certificate generation software information, pid digital standard material certificate pid value, crmName standard material name, crmCode standard material number, batchNumber standard material batch number, certificationDate fixed value date, expiredDate digital standard material certificate validity date to expiration date, producer standard material manufacturer and customer standard material customer.

[0016] The beneficial effect of the above further scheme is: by dividing the specific content of the management data, it is convenient to extract valid basic data information of standard substances from the standard substance certificate, filter out invalid standard substance information, and improve the data efficiency of the digital standard substance certificate.

[0017] Further: the main data includes: description of material and intended use of the standard material, preparation of the sample, traceability and certification of the traceability and the method of determining the value, certified value and uncertainty of the characteristic value and uncertainty, homogeneity and stability testing of the homogeneity and stability, instructions for use;

[0018] The instructions For Use include the packaging, storage and usage of the standard substance.

[0019] The beneficial effects of the above further scheme are: by dividing the main data from the standard material certificate, the main data of the standard material can be extracted, the use efficiency of the digital standard material certificate is improved, and the preparation process and status of the standard material can be quickly obtained.

[0020] Furthermore: the digital signature includes: DigestValue digital standard material certificate summary value, SignatureValue signature value, X509Certificate signature CA certificate, KeyInfo signature private key information, SigningTime signature time, and SignatureTimeStamp signature timestamp data.

[0021] The beneficial effect of the above further solution is that digital signature through CA certificate and timestamp can improve the security of digital reference material certificates and improve the efficiency and accuracy of data processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A flow chart of a method for generating a machine-readable digital reference material certificate;

[0023] Figure 2 This is a framework diagram of a digital reference material certificate. DETAILED DESCRIPTION

[0024] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0025] like Figure 1 As shown, a flow chart of a method for generating a machine-readable digital reference material certificate includes the following steps:

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

[0027] S2: According to the original information of the reference material, management data, main data, notes and document attachments are obtained;

[0028] S3: Encapsulate and obtain a machine-readable incomplete digital reference material certificate based on the management data, main body data, annotations, and document attachments;

[0029] S4: Timestamp and CA certificate sign the incomplete digital reference material certificate to obtain the digital signature of the digital reference material certificate;

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

[0031] S6: split and verify the data of the complete digital reference material certificate to complete the generation of the digital reference material certificate.

[0032] In S1, the original information of the standard material is obtained, and the original information of the standard material can be obtained from the traditional paper standard material certificate and the PDF standard material certificate;

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

[0034] In S3, the digital standard material certificate in XML format is encapsulated according to each individual management data, main data, annotations and document attachments, so that it can be machine-readable. At this time, the digital signature of the digital certificate is still missing;

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

[0036] In one embodiment of the present invention, the digital reference material certificate is time-stamped according to the international electronic time-stamp standard specification "RFC3161";

[0037] like Figure 2 The figure shows the framework of the digital reference material certificate. The digital reference material certificate includes: management data, main body data, notes, document attachments and digital signatures, among which management data and main body data are mandatory data, and notes, document attachments and digital signatures are optional data.

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

[0039] The main data include: description of material and intended use, preparation of sample preparation, traceability and certification, certified value and uncertainty, homogeneity and stability testing, instructions for use;

[0040] instructionsForUseInstructions for use include the packaging, storage and usage of standard substances.

[0041] The digital signature includes: DigestValue digital standard material certificate summary value, SignatureValue signature value, X509Certificate signature CA certificate, KeyInfo signature private key information, SigningTime signature time, SignatureTimeStamp signature timestamp data;

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

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

[0044] In S6, the complete digital standard material certificate is split and verified, wherein the data is split to obtain timestamp data, CA certificate for signature, signature value, management data, main body data, comments, and document attachments, which are verified separately.

[0045] In one embodiment of the present invention, the certificate of the standard substance of carbon dioxide in synthetic air is digitized, the original information of the standard substance is obtained from the paper carbon dioxide standard substance certificate, and the management data, main data, annotations, document attachments and digital signatures are obtained. The digital standard substance certificate in XML format is finally encapsulated through a machine-readable digital standard substance certificate generation method provided by the present invention; wherein 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 Metrology Institute", crmCode is "NIM-RM9095", batchNumber is "200220309053", certificationDate is "2022-08-07", expiredDate is "2023-08-06", producer is "XX Metrology Institute", and customer is "XX Metrology Institute";

[0047] The main data includes: descriptionOfMaterialAndIntendedUse is "This gas standard material is used as a measuring instrument for gas analysis value transfer, used to calibrate gas analysis instruments, evaluate and test analysis methods, arbitrate analysis results, and ensure the traceability and reliability of measurement results. It is a national standard material", preparation is "This gas standard material uses carbon dioxide, oxygen, nitrogen and argon pure gases with accurately determined purity as raw materials and is prepared by weight method", traceabilityAndCertification is "This gas standard material uses the weight method preparation value as the standard value of the standard material, and uses a spectrometer to verify the value. The amount fraction of each component is the ratio of the molar number of the component to the total molar number of all components. All measuring instruments used in the preparation and determination process have been verified or calibrated to ensure traceability to the national metrology base standard", certifiedValueAndUncertainty is "The characteristic value is 480.4×10 -6, unit is mol / mol, uncertainty is 0.1, unit is %", homogeneityAndStabilityTesting is "The homogeneity and stability of this standard substance were evaluated during the development process, and the inspection results are good. This standard substance is valid for 12 months from the date of determination", instructionsForUse is "This gas standard substance is packaged in a 10-liter gas cylinder, the filling pressure is 15MPa, the lower limit of the use pressure is 3.0MPa, and an appropriate pressure regulator should be selected during use. Strictly prevent leakage and contamination of the system. The gas cylinder should be kept away from heat sources, avoid direct sunlight, and prevent impact".

[0048] By converting traditional paper and PDF standard material certificates into digital standard material certificates in XML format, they can be conveniently used in the digital world for operations such as measurement traceability, measurement transfer, data exchange, calibration of gas analysis instruments, evaluation and inspection of analytical methods, etc., making standard material certificates machine-readable, thereby improving usage efficiency and automating processing.

[0049] The beneficial effects of the present invention are as follows: the present invention proposes a method for generating a machine-readable digital standard material certificate, which can convert a traditional paper and PDF format standard material certificate into a machine-readable digital standard material certificate in XML format, perform data automation processing, and improve the management and utilization efficiency of standard material certificates in the digital world, so that it can be applied to various application scenarios, and is convenient for operations such as value traceability, value transfer, data exchange, calibration of gas analysis instruments, evaluation and inspection of analysis methods, etc., which solves the problem that the content of traditional paper and PDF format standard material certificates is not machine-readable and is not easy to automate.

Claims

1. A method for generating a machine-readable digital reference material certificate, characterized in that: The following steps are involved: S1: Obtain the original information of standard substances; S2: According to the original information of the reference material, management data, main data, notes and document attachments are obtained; S3: Encapsulate and obtain a machine-readable incomplete digital reference material certificate based on the management data, main body data, annotations, and document attachments; S4: Timestamp and CA certificate sign the incomplete digital reference material certificate to obtain the digital signature of the digital reference material certificate; S5: Fill the digital signature into the incomplete digital reference material certificate to obtain a machine-readable complete digital reference material certificate; S6: split and verify the data of the complete digital reference material certificate to complete the generation of the digital reference material certificate.

2. The method for generating a machine-readable digital reference material certificate according to claim 1, characterized in that: The complete digital reference material certificate is in XML format.

3. The method for generating a machine-readable digital reference material certificate according to claim 1, characterized in that: The management data includes: dcrmSoftware digital standard material certificate generation software information, pid digital standard material certificate pid value, crmName standard material name, crmCode standard material number, batchNumber standard material batch number, certificationDate fixed value date, expiredDate digital standard material certificate validity date to expiration date, producer standard material manufacturer and customer standard material customer.

4. The method for generating a machine-readable digital reference material certificate according to claim 1, wherein: The main data include: description of material and intended use of the standard material, preparation of the sample, traceability and certification of the traceability and determination method, certified value and uncertainty of the characteristic value and uncertainty, homogeneity and stability testing of the homogeneity and stability, instructions for use; The instructions For Use include the packaging, storage and usage of the standard substance.

5. The method for generating a machine-readable digital reference material certificate according to claim 1, characterized in that: The digital signature includes: DigestValue digital standard material certificate summary value, SignatureValue signature value, X509Certificate signature CA certificate, KeyInfo signature private key information, SigningTime signature time, and SignatureTimeStamp signature timestamp data.

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