CN107809434B - System and method for verifying validity of metering data - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/12—Applying verification of the received information
- H04L63/123—Applying verification of the received information received data contents, e.g. message integrity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
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- H—ELECTRICITY
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- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
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- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3236—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using cryptographic hash functions
- H04L9/3239—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using cryptographic hash functions involving non-keyed hash functions, e.g. modification detection codes [MDCs], MD5, SHA or RIPEMD
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3297—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving time stamps, e.g. generation of time stamps
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Abstract
The invention belongs to the technical field of metering appliance management, and relates to a system and a method for verifying the validity of metering data; the system comprises a data acquisition unit, a data validity verification unit and a data processing unit; the data acquisition unit is used for acquiring data information measured by the measuring instrument and verifying the integrity, and the data validity verification unit is used for decrypting and verifying the integrity of the received data and verifying the validity of the data passing the verification; the data processing unit is used for receiving the data and the data validity verification result transmitted by the data validity verification unit and identifying and storing the data with different validity; the verification method for the validity of the metering data comprises the steps of data acquisition, two times of data integrity verification, validity verification of a metering appliance, validity marking of the metering data and the like, the integrity and the validity of the measured data are guaranteed, and the accuracy of the metering data is improved.
Description
Technical Field
The invention belongs to the technical field of metering appliance management, and relates to a system and a method for verifying the validity of metering data.
Background
The measurement data refers to data which is provided by using a measuring device through detection, and can also be called 'magnitude', 'measurement result', 'measurement data', and the like, along with the development of the internet of things technology and the internet, the intelligent degree of each industry is greatly promoted, a plurality of large data platforms and applications for data management and analysis mining are presented at present, wherein a great part of data comes from the measuring device, the systems usually comprise data acquisition modules, the data acquisition modules mainly have the function of acquiring the data measured by the measuring device through some equipment or software and transmitting the data to the systems for utilization, but the prior art can not better carry out unified management on various measuring devices and data, and the traditional measurement data verification mode generally verifies whether the transmitted data is complete or not, whether the transmitted data is consistent with the original data, and the like, the traditional data verification mode probably causes data provided by the metering device which is not in the valid period to enter a data management system, and results of statistics or analysis are not accurate enough, so that the system and the method for verifying the validity of the metering data, which can not only verify the integrity of the data, but also verify whether the metering device is in the valid period, mark the validity of the data and have high data accuracy, have a good application prospect.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, designs a system and a method for verifying the validity of the metering data, can realize the integrity verification of the measured data twice, verifies whether a metering device is in the validity period on the basis, and marks the validity of the measured data according to the verification result, thereby improving the accuracy of statistical data and realizing the validity verification and management of various metering data of the data.
In order to achieve the purpose, the invention relates to a metering data validity verification system, which comprises a main structure, a data acquisition unit, a data validity verification unit and a data processing unit, wherein the main structure comprises a data acquisition unit, a data validity verification unit and a data processing unit; the data acquisition unit is used for acquiring data information measured by the measuring instrument, carrying out integrity verification on the measured data information, encrypting the verified measuring data and the unique identification code of the measuring instrument stored in the system and then uploading the encrypted measuring data and the unique identification code to the data validity verification unit, the data validity verification unit decrypts the received data, further carrying out integrity verification on the decrypted measuring data information, extracting the unique identification code of the measuring instrument from the verified data, acquiring the information of the measuring instrument from the common service platform of the measuring instrument through the unique identification code of the measuring instrument and carrying out validity verification on the measuring instrument; the data processing unit is used for receiving the data and the data validity verification result transmitted by the data validity verification unit, and identifying and storing the data with different validity.
Furthermore, the data acquisition unit comprises a data acquisition module and a data receiving and checking module;
a data acquisition module: the data acquisition module is wirelessly connected with the field metering appliance and is used for sending an acquisition instruction to the field metering appliance and supporting the analysis of MODBUS-RTU/TCP/ASCII, IEC60870-5-101/102/103/104, DNP3.0, CDT standards and protocols; the data acquisition module analyzes the acquired measurement data information of the original measuring instrument to form data information of the measuring instrument, encrypts the analyzed data information and transmits the encrypted data information to the data receiving and verifying module for receiving and verifying;
the data receiving and checking module: the data receiving and verifying module is used for receiving and decrypting the encrypted data information in the data acquisition module and verifying the integrity of the decrypted data, the data receiving and verifying module uses a CRC (cyclic redundancy check) code to verify the integrity of the data, the data which fails to be verified are not processed, the data which passes the verification are analyzed, and the data are analyzed into a' measuring point name (number): and in the form of the value', analyzed metering data and unique identification codes of metering instruments, data acquisition time, data length, the number of data containing measuring points and the MD5 value are packaged and encrypted, and are uploaded to a data validity verification unit.
Furthermore, the data validity verifying unit comprises a decryption module and a verifying module;
a decryption module: the data acquisition unit is used for receiving the uploaded data which is verified through data integrity and encrypted by the data acquisition unit, and decrypting the data;
a verification module: performing MD5 calculation on the data decrypted by the decryption module, comparing the data with the uploaded MD5 value, checking whether the MD5 value is consistent, if the two values are consistent, the check is passed, otherwise, the check is regarded as not passed; discarding the data which is not passed by the verification, sending an instruction for re-acquiring the part of data to the data acquisition unit, and selecting to re-acquire the data or finishing acquiring the data; checking the passed data, extracting a unique identification code of the measuring instrument from the decrypted data, acquiring information of the measuring instrument from a common service platform of the measuring instrument by using the unique identification code of the measuring instrument, wherein the information of the measuring instrument comprises a strong inspection attribute, a purpose, an installation position, an industry to which an owner belongs, an area to which the owner belongs, data precision, a measuring date of the measuring instrument and a measuring data category, acquiring the strong inspection type, a verification period and verification expiration time of the measuring instrument from the acquired strong inspection attribute, verifying the validity of the measuring instrument, and transmitting the data and a data validity verification result to a data processing unit.
Furthermore, the data processing unit is used for marking and storing the metering data attribute transmitted by the verification module; the measuring instrument forced inspection type comprises a forced inspection measuring instrument and a non-forced inspection measuring instrument, and the measuring data attribute is marked as the following four types according to the forced inspection type of the measuring instrument, the verification period of the measuring instrument and the verification expiration time: for the data measured by the metering appliance of the non-strong detection type, the data is marked as 'non-strong detection valid'; for the data measured by the strong detection type measuring instrument, comparing the verification expiration time of the measuring instrument with the acquisition time, if the acquisition time is less than or equal to the verification expiration time, marking the data as 'strong detection valid', and if the acquisition time is greater than the verification expiration time, marking the data as 'strong detection invalid'; if the verification module does not obtain meter information, the data is marked as "no meter information".
Furthermore, the data acquisition module and the field metering appliance are connected in a mode of RS485/RS232, RJ45 and Ethernet.
Furthermore, the common service platform of the measuring instrument is an existing system, is in data communication with the data validity verification module, and provides the measuring instrument verification information for the common service platform of the measuring instrument.
Compared with the prior art, the invention has the following beneficial effects: the integrity of the measured data is checked twice, whether the measuring device is in the valid period or not is checked on the basis, and the validity of the measured data is marked according to the verification result, so that the integrity and validity of the measured data are ensured, the accuracy of the results of statistical analysis and the like based on the measured data is improved, the verification of whether the measuring device is in the valid period or not is realized, the measured data are measured by the measuring device in the valid period, and the use is more reliable.
Drawings
FIG. 1 is a schematic diagram of a system for validating the validity of metering data according to the present invention;
fig. 2 is a flow chart of a verification method for validity of metering data according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The invention is further illustrated by the following specific examples in combination with the accompanying drawings.
Example 1:
as shown in fig. 1, the main structure of the metering data validity verification system according to the present embodiment includes a data acquisition unit, a data validity verification unit, and a data processing unit; the data acquisition unit is used for acquiring data information measured by the measuring instrument, carrying out integrity verification on the measured data information, encrypting the verified measuring data and the unique identification code of the measuring instrument stored in the system and then uploading the encrypted measuring data and the unique identification code to the data validity verification unit, the data validity verification unit decrypts the received data, further carrying out integrity verification on the decrypted measuring data information, extracting the unique identification code of the measuring instrument from the verified data, acquiring the information of the measuring instrument from the common service platform of the measuring instrument through the unique identification code of the measuring instrument and carrying out validity verification on the measuring instrument; the data processing unit is used for receiving the data and the data validity verification result transmitted by the data validity verification unit, and identifying and storing the data with different validity.
The data acquisition unit of the embodiment comprises a data acquisition module and a data receiving and checking module;
a data acquisition module: the data acquisition module is wirelessly connected with the field metering appliance and is used for sending an acquisition instruction to the field metering appliance and supporting the analysis of MODBUS-RTU/TCP/ASCII, IEC60870-5-101/102/103/104, DNP3.0, CDT standards and protocols; the data acquisition module analyzes the acquired measurement data information of the original measuring instrument to form data information of the measuring instrument, encrypts the analyzed data information and transmits the encrypted data information to the data receiving and verifying module for receiving and verifying;
the data receiving and checking module: the data receiving and verifying module is used for receiving and decrypting the encrypted data information in the data acquisition module and verifying the integrity of the decrypted data, the data receiving and verifying module uses the CRC check code to verify the integrity of the data, the data which fails to be verified is not processed, the data which passes the verification is analyzed, and the data is analyzed into a' measuring point name (number): and in the form of the value', analyzed metering data and unique identification codes of metering instruments, data acquisition time, data length, the number of data containing measuring points and the MD5 value are packaged and encrypted, and are uploaded to a data validity verification unit.
The data validity verification unit described in this embodiment includes a decryption module and a verification module;
a decryption module: the data acquisition unit is used for receiving the uploaded data which is verified through data integrity and encrypted by the data acquisition unit, and decrypting the data;
a verification module: performing MD5 calculation on the data decrypted by the decryption module, comparing the data with the uploaded MD5 value, checking whether the MD5 value is consistent, if the two values are consistent, the check is passed, otherwise, the check is regarded as not passed; discarding the data which is not passed by the verification, sending an instruction for re-acquiring the part of data to the data acquisition unit, and selecting to re-acquire the data or finishing acquiring the data; checking the passed data, extracting a unique identification code of the measuring instrument from the decrypted data, acquiring information of the measuring instrument from a common service platform of the measuring instrument by using the unique identification code of the measuring instrument, wherein the information of the measuring instrument comprises a strong inspection attribute, a purpose, an installation position, an industry to which an owner belongs, an area to which the owner belongs, data precision, a measuring date of the measuring instrument and a measuring data category, acquiring the strong inspection type, a verification period and verification expiration time of the measuring instrument from the acquired strong inspection attribute, verifying the validity of the measuring instrument, and transmitting the data and a data validity verification result to a data processing unit.
The data processing unit is used for marking and storing the metering data attribute transmitted by the verification module; the measuring instrument forced inspection type comprises a forced inspection measuring instrument and a non-forced inspection measuring instrument, and the measuring data attribute is marked as the following four types according to the forced inspection type of the measuring instrument, the verification period of the measuring instrument and the verification expiration time: for the data measured by the metering appliance of the non-strong detection type, the data is marked as 'non-strong detection valid'; for the data measured by the strong detection type measuring instrument, comparing the verification expiration time of the measuring instrument with the acquisition time, if the acquisition time is less than or equal to the verification expiration time, marking the data as 'strong detection valid', and if the acquisition time is greater than the verification expiration time, marking the data as 'strong detection invalid'; if the verification module does not obtain meter information, the data is marked as "no meter information".
The data acquisition module described in this embodiment further includes RS485/RS232, RJ45, and ethernet, in a manner of being connected to the field measurement instrument.
The common service platform for the measuring instruments is an existing system, performs data communication with the data validity verification module, and provides the measuring instrument verification information for the common service platform.
Example 2:
as shown in fig. 2, the method for verifying validity of metering data according to the present embodiment includes the following specific steps:
(1) the data acquisition unit sends an acquisition instruction to the field metering instrument to acquire measurement data, the measured data is subjected to data integrity check through CRC check, if the measured data passes the check, the acquired data and the unique identification code of the metering instrument, the data acquisition time, the data length, the number of data containing measuring points and the data MD5 value are packaged and encrypted, the data are uploaded to the data validity verification unit to be subjected to the next operation, and if the check does not pass, no processing is performed; the data security is ensured, incomplete data are prevented from being acquired to the data acquisition unit, and the data integrity of the acquired metering device is ensured;
(2) the data validity verification unit receives the data packet transmitted by the data acquisition unit;
(3) decrypting the received data packet;
(4) analyzing the metering data information of the metering device from the decrypted data packet;
(5) analyzing the information data of the measuring instrument from the decrypted data packet;
(6) the data validity verification unit further performs integrity verification on the measured data, MD5 calculation is performed, the measured data are compared with the uploaded MD5 value, if the two values are consistent, verification is passed, the next operation is performed, otherwise, the verification is regarded as failed, an instruction for re-acquiring the data is sent to the data acquisition unit, and re-acquisition of the data is selected or the data acquisition is finished; the integrity of the data is further ensured by the two-time verification, so that the data acquisition of the measuring instrument is more accurate, and the accuracy of the data of the measuring instrument is improved;
(7) the data validity verification unit verifies the validity of the metering device, receives the metering data which passes the integrity verification in the step (6), sends a verification request to a metering device public service platform, uploads a decrypted metering device unique identification code, receives the metering device information returned by the metering device public service platform, marks the metering data as 'non-strong detection valid' in the step (8) if the metering device is in a non-strong detection type, and marks the metering data as 'strong detection valid' in the step (8) if the metering device is in a strong detection type when the acquisition time of the metering data is less than or equal to the verification expiration time; when the acquisition time of the metering data is longer than the verification expiration time, marking the metering data as 'strong verification invalid' through the step (8), and if the related metering appliance information is not found, marking the metering data as 'no metering appliance information' through the step (8); on the basis of data integrity verification of the measuring instrument, the validity of the measuring instrument is further verified, the data statistics or analysis accuracy is improved, and accurate management of data is realized;
(8) and the data processing unit marks the validity attribute of the acquired data: non-forced inspection is effective, forced inspection is invalid, and no measuring instrument information exists; and identifies and stores data of different validity.
The above embodiments are only specific examples of the present invention, and the protection scope of the present invention includes but is not limited to the product forms and styles of the above embodiments, and any suitable changes or modifications made by those skilled in the art according to the claims of the present invention shall fall within the protection scope of the present invention.
Claims (6)
1. A measurement data validity verification system comprises a main structure, a data acquisition unit, a data validity verification unit and a data processing unit; the method is characterized in that: the data acquisition unit is used for acquiring data information measured by the measuring instrument, carrying out integrity verification on the measured data information, encrypting the verified measuring data and the unique identification code of the measuring instrument stored in the system and then uploading the encrypted measuring data and the unique identification code to the data validity verification unit, the data validity verification unit decrypts the received data, further carrying out integrity verification on the decrypted measuring data information, extracting the unique identification code of the measuring instrument from the verified data, acquiring the information of the measuring instrument from the common service platform of the measuring instrument through the unique identification code of the measuring instrument and carrying out validity verification on the measuring instrument; the data processing unit is used for receiving the data and the data validity verification result transmitted by the data validity verification unit, and identifying and storing the data with different validity.
2. The system of claim 1, wherein: the data acquisition unit comprises a data acquisition module and a data receiving and checking module;
a data acquisition module: the data acquisition module is wirelessly connected with the field metering appliance and is used for sending an acquisition instruction to the field metering appliance and supporting the analysis of MODBUS-RTU/TCP/ASCII, IEC60870-5-101/102/103/104, DNP3.0, CDT standards and protocols; the data acquisition module analyzes the acquired measurement data information of the original measuring instrument to form data information of the measuring instrument, encrypts the analyzed data information and transmits the encrypted data information to the data receiving and verifying module for receiving and verifying;
the data receiving and checking module: the data receiving and verifying module is used for receiving and decrypting the encrypted data information in the data acquisition module and verifying the integrity of the decrypted data, the data receiving and verifying module uses a CRC (cyclic redundancy check) code to verify the integrity of the data, the data which fails to be verified are not processed, the data which passes the verification is analyzed, and the data is analyzed into a' measuring point name: and in the form of the value', analyzed metering data and unique identification codes of metering instruments, data acquisition time, data length, the number of data containing measuring points and the MD5 value are packaged and encrypted, and are uploaded to a data validity verification unit.
3. The system of claim 2, wherein: the data validity verification unit comprises a decryption module and a verification module;
a decryption module: the data acquisition unit is used for receiving the uploaded data which is verified through data integrity and encrypted by the data acquisition unit, and decrypting the data;
a verification module: performing MD5 calculation on the data decrypted by the decryption module, comparing the data with the uploaded MD5 value, checking whether the MD5 value is consistent, if the two values are consistent, the check is passed, otherwise, the check is regarded as not passed; discarding the data which is not passed by the verification, sending an instruction for re-acquiring the part of data to the data acquisition unit, and selecting to re-acquire the data or finishing acquiring the data; checking the passed data, extracting a unique identification code of the measuring instrument from the decrypted data, acquiring information of the measuring instrument from a common service platform of the measuring instrument by using the unique identification code of the measuring instrument, wherein the information of the measuring instrument comprises a strong inspection attribute, a purpose, an installation position, an industry to which an owner belongs, an area to which the owner belongs, data precision, a measuring date of the measuring instrument and a measuring data category, acquiring the strong inspection type, a verification period and verification expiration time of the measuring instrument from the acquired strong inspection attribute, verifying the validity of the measuring instrument, and transmitting the data and a data validity verification result to a data processing unit.
4. The system of claim 3, wherein: the data processing unit is used for marking and storing the metering data attribute transmitted by the verification module; the measuring instrument forced inspection type comprises a forced inspection measuring instrument and a non-forced inspection measuring instrument, and the measuring data attribute is marked as the following four types according to the forced inspection type of the measuring instrument, the verification period of the measuring instrument and the verification expiration time: for the data measured by the metering appliance of the non-strong detection type, the data is marked as 'non-strong detection valid'; for the data measured by the strong detection type measuring instrument, comparing the verification expiration time of the measuring instrument with the acquisition time, if the acquisition time is less than or equal to the verification expiration time, marking the data as 'strong detection valid', and if the acquisition time is greater than the verification expiration time, marking the data as 'strong detection invalid'; if the verification module does not obtain meter information, the data is marked as "no meter information".
5. The system of claim 2, wherein: the data acquisition module is connected with the field metering appliance and also comprises RS485/RS232, RJ45 and Ethernet.
6. A verification method for validity of metering data is characterized in that: the method comprises the following specific steps:
(1) the data acquisition unit sends an acquisition instruction to the field metering instrument to acquire measurement data, the measured data is subjected to data integrity check through CRC check, if the measured data passes the check, the acquired data and the unique identification code of the metering instrument, the data acquisition time, the data length, the number of data containing measuring points and the data MD5 value are packaged and encrypted, the data are uploaded to the data validity verification unit to be subjected to the next operation, and if the check does not pass, no processing is performed; the data security is ensured, incomplete data are prevented from being acquired to the data acquisition unit, and the data integrity of the acquired metering device is ensured;
(2) the data validity verification unit receives the data packet transmitted by the data acquisition unit;
(3) decrypting the received data packet;
(4) analyzing the metering data information of the metering device from the decrypted data packet;
(5) analyzing the information data of the measuring instrument from the decrypted data packet;
(6) the data validity verification unit further performs integrity verification on the measured data, MD5 calculation is performed, the measured data are compared with the uploaded MD5 value, if the two values are consistent, verification is passed, the next operation is performed, otherwise, the verification is regarded as failed, an instruction for re-acquiring the data is sent to the data acquisition unit, and re-acquisition of the data is selected or the data acquisition is finished; the integrity of the data is further ensured by the two-time verification, so that the data acquisition of the measuring instrument is more accurate, and the accuracy of the data of the measuring instrument is improved;
(7) the data validity verification unit verifies the validity of the metering device, receives the metering data which passes the integrity verification in the step (6), sends a verification request to a metering device public service platform, uploads a decrypted metering device unique identification code, receives the metering device information returned by the metering device public service platform, marks the metering data as 'non-strong detection valid' in the step (8) if the metering device is in a non-strong detection type, and marks the metering data as 'strong detection valid' in the step (8) if the metering device is in a strong detection type when the acquisition time of the metering data is less than or equal to the verification expiration time; when the acquisition time of the metering data is longer than the verification expiration time, marking the metering data as 'strong verification invalid' through the step (8), and if the related metering appliance information is not found, marking the metering data as 'no metering appliance information' through the step (8); on the basis of data integrity verification of the measuring instrument, the validity of the measuring instrument is further verified, the data statistics or analysis accuracy is improved, and accurate management of data is realized;
(8) and the data processing unit marks the validity attribute of the acquired data: non-forced inspection is effective, forced inspection is invalid, and no measuring instrument information exists; and identifies and stores data of different validity.
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| CN109389375A (en) * | 2018-11-02 | 2019-02-26 | 济南大陆机电股份有限公司 | A kind of compulsory verification measurement instrument is put on record management method and system |
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| CN110737655B (en) * | 2019-10-21 | 2021-07-30 | 京东数字科技控股有限公司 | Method and device for reporting data |
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