CN110322678B - Block chain based four-table centralized reading system and method - Google Patents
Block chain based four-table centralized reading system and method Download PDFInfo
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- CN110322678B CN110322678B CN201910584652.7A CN201910584652A CN110322678B CN 110322678 B CN110322678 B CN 110322678B CN 201910584652 A CN201910584652 A CN 201910584652A CN 110322678 B CN110322678 B CN 110322678B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/602—Providing cryptographic facilities or services
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/64—Protecting data integrity, e.g. using checksums, certificates or signatures
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- 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
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/60—Arrangements in telecontrol or telemetry systems for transmitting utility meters data, i.e. transmission of data from the reader of the utility meter
Abstract
The invention provides a four-table centralized meter reading system based on a block chain, which comprises a block chain platform, a client and a data acquisition end, wherein the block chain platform comprises a plurality of blocks; the data acquisition end acquires energy consumption data on the water meter, the electric meter, the gas meter and the heat meter, respectively encrypts the public key data of the four energy consumption data, further signs private key data and then sends the data to the block chain platform; the block chain platform receives and stores four energy consumption data subjected to data encryption and data signature, acquires client authentication information and feeds back a request passing instruction after an access request initiated by an authenticated client is valid, and selects one of the four energy consumption data to perform data interaction with the client according to four-table service logic and client authentication information in a preset intelligent contract after further receiving an interactive operation request instruction initiated by the client. By implementing the invention, the data privacy protection is realized by adopting a data isolation mode of an asymmetric encryption mode, and the intelligent management of the data is realized by interactive design.
Description
Technical Field
The invention relates to the technical field of intelligent electric power meter reading, in particular to a four-meter centralized reading system and a four-meter centralized reading method based on a block chain.
Background
In the field of energy Internet, the recording industry is indispensable for counting the daily life energy consumption of residents, so the rapid development of the recording industry has great significance for the country to build an intelligent city in the aspect of energy. Although the country consumes a lot of manpower and financial resources in the field of the table-marking industry and combines a lot of advanced scientific technologies at present, a lot of problems are still unsolved, and particularly the problem of 'four-table centralized reading' of uniformly reading and uniformly processing four energy sources of water, electricity, gas and heat is urgently needed to be solved.
At the national strategic level, the national power grid and the southern power grid strive to actively promote the development of four-meter centralized meter reading. Meanwhile, related departments of the country emphasize that infrastructures of electricity, gas, water and heat are constructed in a coordinated manner for many times in various meetings and texts, so that the purposes of resource sharing and repeated construction are achieved.
As is well known, the four energy sources of tap water, electric energy, gas and heating are separately and independently managed in China. Although the country continuously promotes the centralized reading of the four meters, the four energy companies respectively have own management modes for camping, and even if the four energy companies are very similar in reading, cooperation consensus cannot be achieved all the time to form resource sharing, so that a lot of resources are wasted on meter reading data, and troubles are added to daily life of users.
At present, related technologies are applied to solve the problem of unified reading and reading of four meters in water, electricity, gas and heat and unified processing. For example, the patent with the application number of CN201710930637.4 and the name of the invention is a wireless communication method for four-table centralized meter reading, which proposes to fix the time and frequency points for each sub-node and the master node to communicate through division of frequency domain and time domain, and to realize wireless communication for four-table centralized meter reading when the sub-nodes in other frequency points and time domains are in standby state, and to reduce power consumption; for another example, the patent application number CN201610425219.5 entitled method for centralized reading of water, electricity, gas and heat meters is that data communication is performed with a concentrator through public network communication, that is, the data is actively uploaded after the terminal-recorded data is collected and processed by the concentrator or the centralized reading of four meters is realized through real-time detection by a master station system.
However, the existing four-meter centralized reading technology focuses on solving the transmission problem of data collected by the four meters of water, electricity, gas and heat, but cannot realize intelligent data management and data privacy protection.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a four-table centralized meter reading system and method based on a block chain, which implement data privacy protection by using a data isolation manner in an asymmetric encryption manner, and implement data intelligent management by using an interactive design.
In order to solve the technical problem, an embodiment of the present invention provides a block chain-based four-table centralized meter reading system, including a block chain platform, and a client and a data acquisition end respectively connected to the block chain platform; wherein the content of the first and second substances,
the data acquisition end is used for acquiring energy consumption data on the water meter, the electric meter, the gas meter and the heat meter, respectively encrypting the energy consumption data on the water meter, the electric meter, the gas meter and the heat meter according to respective preset public keys, and further sending the energy consumption data on the water meter, the electric meter, the gas meter and the heat meter after data encryption to the block chain platform after respectively carrying out data signature according to respective preset private keys;
the client is used for initiating an access request to the blockchain platform, and after the initiated access request passes, initiating an interactive operation request instruction to the blockchain platform to perform data interaction with the blockchain platform;
the block chain platform is used for receiving and storing energy consumption data on the water meter, the electric meter, the gas meter and the heat meter which are sent by the data acquisition end and are subjected to data encryption and data signature; and after the access request initiated by the client is authenticated to be valid, acquiring client authentication information and feeding back a request passing instruction to the client, and further after receiving an interactive operation request instruction initiated by the client, selecting one of the stored energy consumption data of the water meter, the electric meter, the gas meter and the heat meter to perform data interaction with the client according to the four-meter service logic and the client authentication information in the preset intelligent contract.
Wherein the blockchain platform is developed based on a Fabric technology architecture.
The interactive operation request instruction initiated by the client comprises an interactive operation request instruction of a personal user and an interactive operation request instruction of a company user; wherein the content of the first and second substances,
the interactive operation request instruction of the personal user comprises a balance inquiry instruction, a form inquiry instruction and a recharging instruction;
the interactive operation request instruction of the company user comprises a newly added user network access instruction, a newly added table network access instruction, a user information query instruction, a table information query instruction and a table data query instruction.
The embodiment of the invention also provides a block chain-based four-table centralized reading method, which is implemented in the block chain-based four-table centralized reading system, and the method comprises the following steps:
the method comprises the steps that a data acquisition end acquires energy consumption data on a water meter, an electric meter, a gas meter and a heat meter, the acquired energy consumption data on the water meter, the electric meter, the gas meter and the heat meter are respectively encrypted according to respective preset public keys, and further after the energy consumption data on the water meter, the electric meter, the gas meter and the heat meter after data encryption are respectively signed according to respective preset private keys, the data are sent to a block chain platform;
and the block chain platform receives and stores the energy consumption data on the water meter, the electric meter, the gas meter and the heat meter which are sent by the data acquisition end and are subjected to data encryption and data signature, acquires client authentication information and feeds a request passing instruction back to the client after an access request initiated by the authentication client is valid, and further selects one of the stored energy consumption data of the water meter, the electric meter, the gas meter and the heat meter to perform data interaction with the client according to four-meter service logic and client authentication information in a preset intelligent contract after receiving an interactive operation request instruction initiated by the client.
Wherein the blockchain platform is developed based on a Fabric technology architecture.
The interactive operation request instruction initiated by the client comprises an interactive operation request instruction of a personal user and an interactive operation request instruction of a company user; wherein the content of the first and second substances,
the interactive operation request instruction of the personal user comprises a balance inquiry instruction, a form inquiry instruction and a recharging instruction;
the interactive operation request instruction of the company user comprises a newly added user network access instruction, a newly added table network access instruction, a user information query instruction, a table information query instruction and a table data query instruction.
The embodiment of the invention has the following beneficial effects:
the data isolation method based on the asymmetric encryption mode (such as public key data encryption and private key data signature) provided by the invention is based on the characteristics of decentralized, non-falsification, transparency and the like of the block chain, so that the data privacy protection and the intelligent management of the data can be ensured under the four-table centralized reading scene, and the mutual trust among enterprises can be realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is within the scope of the present invention for those skilled in the art to obtain other drawings based on the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a block chain-based four-table centralized meter reading system according to an embodiment of the present invention;
fig. 2 is a flowchart of a block chain-based four-table centralized reading method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, in an embodiment of the present invention, a block chain-based four-table centralized meter reading system includes a block chain platform 1, a client 2 and a data acquisition terminal 3, which are respectively connected to the block chain platform 1; wherein the content of the first and second substances,
the data acquisition terminal 3 is used for acquiring energy consumption data on the water meter, the electric meter, the gas meter and the heat meter, respectively encrypting the energy consumption data on the water meter, the electric meter, the gas meter and the heat meter according to respective preset public keys, further performing data signature on the energy consumption data on the water meter, the electric meter, the gas meter and the heat meter after data encryption according to respective preset private keys, and then sending the data to the block chain platform 1;
the client 2 is used for initiating an access request to the blockchain platform 1, and after the initiated access request passes, initiating an interactive operation request instruction to the blockchain platform 1 to perform data interaction with the blockchain platform 1;
the block chain platform 1 is used for receiving and storing energy consumption data on the water meter, the electric meter, the gas meter and the heat meter which are sent by the data acquisition end 3 and are subjected to data encryption and data signature; and after the access request initiated by the client 2 to be authenticated is valid, acquiring client authentication information and feeding back a request passing instruction to the client 2, and further after receiving an interactive operation request instruction initiated by the client 2, selecting one of the stored energy consumption data of the water meter, the electric meter, the gas meter and the heat meter to perform data interaction with the client 2 according to the four-meter service logic and the client authentication information in the preset intelligent contract.
In the embodiment of the present invention, the blockchain platform 1 is developed based on Fabric technology architecture, and the blockchain platform 1 is used as a trusted distributed database, and is a carrier for user information, table information, and main data information. The Fabric technical architecture can not only provide block chain basic services such as consensus service, ledger service, transaction service, ledger service and the like, but also support intelligent contract self-defined business logic. Therefore, by writing an intelligent contract, the business logic related to the four-table centralized reading is directly deployed on the blockchain platform 1, so that the burden on the business logic of the client can be reduced, and the characteristics of the blockchain platform 1 developed by Fabric are more fully utilized.
The blockchain platform 1 applies the Fabric blockchain technology, so that a node added by each energy company can keep an account book containing data of other companies, and therefore, in order to guarantee the data security of each company, each energy company can only access the self-reported data, but cannot acquire the data of other companies. Wherein, the energy consumption data on the water meter, the electric meter, the gas meter and the heat meter are all called as the meter data.
In the embodiment of the invention, the data acquisition terminal 3 is a hub for interaction between a block chain network and each real energy meter, and the energy meters of each company acquire data at regular time and transmit the data to the data acquisition terminal. And the data acquisition end performs related processing on each table data and then transmits the table data to the block chain platform 1 for storage.
The data acquisition end 3 performs unified processing on the table data, that is, the table data of each table is encrypted by the public key of the energy company, and then is signed by the private key of the table. The purpose of encrypting with the public key of each company is to ensure the confidential security of data, that is, only the company can decrypt the data encrypted with the company public key by using its own private key, but other companies cannot obtain the company's data. Therefore, by adopting the asymmetric encryption technology of public key data encryption, data isolation among the data recorded by each energy company can be well realized, the confidentiality and the safety of the data are ensured, and meanwhile, the integrity and the authentification of the data can be ensured by carrying out private key data signature.
In the embodiment of the invention, the client 2 is a visual web interface for interaction between the user and the energy company and the blockchain platform 1, and provides functions of inquiring balance, recharging and form inquiring for individual users, and also provides functions of newly adding user network access, new network access, table information inquiry, user information inquiry and table data inquiry for company users. Therefore, the interactive operation request instruction initiated by the client comprises an interactive operation request instruction of an individual user and an interactive operation request instruction of a company user; the interactive operation request instruction of the personal user comprises a balance inquiry instruction, a form inquiry instruction and a recharging instruction; the interactive operation request command of the company user comprises a newly added user network access command, a newly added table network access command, a user information query command, a table information query command and a table data query command.
Once a user (including an individual user and a company user) operates the client 2 and inputs data, the client 2 receives a user request and then sends the request to a service logic layer, i.e., an interface of a background process, where the service logic is written in a chain code and deployed in a blockchain network. Firstly, the client 2 needs to perform authentication, that is, an access request is initiated to the blockchain platform 1, and then the client 2 can further initiate an interactive operation request instruction to the blockchain platform 1 after the initiated access request passes, so as to perform data interaction with the blockchain platform 1. For example, the client 2 is developed in a web form, that is, a user can access the website by using any browser, and only needs to access a specific website, and then inputs a user name and a password of the user for identity authentication, and then the user can enter the software system, operate related functions, and interact with the blockchain platform 1. The client 2 is a lightweight front-end interface software system, relevant data is stored in the blockchain platform 1 by calling a service logic interface, or corresponding data is inquired from the blockchain platform 1 and is displayed to a user in a user-friendly manner on the client interface, so that the design separates the front end from the service logic, and the system has the characteristics of low coupling and clear hierarchy, and is convenient for redevelopment and problem repair.
For example, when a personal user inquires the balance, the personal user operates the client 2, enters a software system of the client 2 after inputting personal user name and password authentication, initiates a balance inquiry request through the software system of the client 2, the client 2 obtains personal user authentication information and calls a balance inquiry interface, the block chain platform 1 calls corresponding service logic in an intelligent contract after receiving the personal user authentication information and the balance inquiry instruction, inquires the balance of the personal user, and then feeds back data to the client 2.
For another example, when the individual user charges, the individual user operates the client 2, enters the software system of the client 2 after inputting the personal user name and password for authentication, clicks the charge button, inputs the charge amount on the pop-up interface, and clicks for determination. Then the client 2 obtains the personal user authentication information and calls a recharging interface, the blockchain platform 1 calls corresponding business logic in an intelligent contract to execute transaction after receiving the personal user authentication information and a recharging instruction, after endorsing in a blockchain, sequencing service nodes to generate blocks, after broadcasting and updating an account book, the transaction is successfully executed, the balance of the personal user in the account book of each node is updated, and then recharging success information is fed back to the client 2. If the transaction execution fails, the recharging failure information is fed back to the client 2.
For another example, when a personal user queries a form (i.e., the table data), the personal user operates the client 2, enters a software system of the client 2 after inputting a personal user name and password authentication, and after filling a table to be queried in a corresponding input frame, clicks a query energy consumption button, the client 2 obtains personal user authentication information and calls a table data query interface, the block chain platform 1 determines whether the table to be queried is bound with the personal user after receiving the personal user authentication information and a form query instruction, and if so, queries the table data in the block chain platform 1, and feeds a query result back to the client 2. If the table is not bound to the individual user initiating the request, error information is fed back to the client 2.
For another example, when a new user of a company user accesses the network, the company user operates the client 2, enters the software system of the client 2 after inputting a company user name and password authentication, clicks a user access button, inputs the network access information of the new user on a pop-up interface, and clicks to determine the network access information. Then the client 2 obtains company user authentication information and calls a user network access interface, the block chain platform 1 calls corresponding business logic in an intelligent contract to execute transaction after receiving the company user authentication information and a newly-added user network access instruction, after endorsing in a block chain, sequencing service nodes to generate blocks, after broadcasting and updating an account book, the transaction execution is successful, user information in the account book of each node is updated, and then successful information is fed back to the client 2. If the transaction execution fails, the failure information is fed back to the client 2.
For another example, when a company user newly adds a table access network (i.e., a new table access network), the company user operates the client 2, enters the software system of the client 2 after inputting a company user name and password authentication, clicks a new table access button, inputs new table access information on a pop-up interface, and clicks for determination. And then the client 2 acquires the company user authentication information and calls a new table network access interface, the block chain platform 1 calls corresponding business logic in an intelligent contract to execute transaction after receiving the company user authentication information and a new table network access instruction, the service nodes are sorted to generate blocks after endorsing in the block chain, the transaction is executed successfully after broadcasting and updating the account book, the table information in the account book of each node is updated, and then the successful information is fed back to the client 2. If the transaction execution fails, the failure information is fed back to the client 2.
For another example, when a company user queries a user, the company user operates the client 2, enters a software system of the client 2 after inputting a company user name and password authentication, clicks query user information, inputs a user ID on a pop-up interface, and clicks confirmation. Then the client 2 obtains the company user authentication information and calls an inquiry user information interface, the block chain platform 1 calls corresponding service logic in the intelligent contract to execute transaction after receiving the company user authentication information and a user information inquiry command, inquires corresponding user information in the block chain account book, and feeds an inquiry result back to the client 2. By analogy, the process of the company user for inquiring the table information and the table data is not described herein again.
As shown in fig. 2, in an embodiment of the present invention, a block chain based four-table centralized copy method is provided, which is implemented in the block chain based four-table centralized copy system, and the method includes the following steps:
step S1, the data acquisition end acquires energy consumption data on the water meter, the electric meter, the gas meter and the heat meter, the acquired energy consumption data on the water meter, the electric meter, the gas meter and the heat meter are respectively encrypted according to respective preset public keys, and further the energy consumption data on the water meter, the electric meter, the gas meter and the heat meter after data encryption are respectively signed according to respective preset private keys and then sent to the block chain platform;
step S2, the energy consumption data on the water meter, the electric meter, the gas meter and the heat meter which are sent by the data acquisition end and are subjected to data encryption and data signature are received and stored by the block chain platform, after an access request initiated by the authentication client is valid, client authentication information is obtained and a request passing instruction is fed back to the client, and after an interactive operation request instruction initiated by the client is further received, the energy consumption data of one of the stored water meter, electric meter, gas meter and heat meter is selected to carry out data interaction with the client according to four-meter service logic and client authentication information in a preset intelligent contract.
Wherein the blockchain platform is developed based on a Fabric technology architecture.
The interactive operation request instruction initiated by the client comprises an interactive operation request instruction of a personal user and an interactive operation request instruction of a company user; wherein the content of the first and second substances,
the interactive operation request instruction of the personal user comprises a balance inquiry instruction, a form inquiry instruction and a recharging instruction;
the interactive operation request instruction of the company user comprises a newly added user network access instruction, a newly added table network access instruction, a user information query instruction, a table information query instruction and a table data query instruction.
The embodiment of the invention has the following beneficial effects:
the data isolation method based on the asymmetric encryption mode (such as public key data encryption and private key data signature) provided by the invention is based on the characteristics of decentralized, non-falsification, transparency and the like of the block chain, so that the data privacy protection and the intelligent management of the data can be ensured under the four-table centralized reading scene, and the mutual trust among enterprises can be realized.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (4)
1. A four-table centralized meter reading system based on a block chain is characterized by comprising a block chain platform, a client and a data acquisition end, wherein the client and the data acquisition end are respectively accessed to the block chain platform; wherein the content of the first and second substances,
the data acquisition end is used for acquiring energy consumption data on the water meter, the electric meter, the gas meter and the heat meter, respectively encrypting the energy consumption data on the water meter, the electric meter, the gas meter and the heat meter according to respective preset public keys, and further sending the energy consumption data on the water meter, the electric meter, the gas meter and the heat meter after data encryption to the block chain platform after respectively carrying out data signature according to respective preset private keys;
the client is used for initiating an access request to the blockchain platform, and after the initiated access request passes, initiating an interactive operation request instruction to the blockchain platform to perform data interaction with the blockchain platform;
the block chain platform is used for receiving and storing energy consumption data on the water meter, the electric meter, the gas meter and the heat meter which are sent by the data acquisition end and are subjected to data encryption and data signature; after the access request initiated by the client is authenticated to be valid, acquiring client authentication information and feeding back a request passing instruction to the client, and further after receiving an interactive operation request instruction initiated by the client, selecting one of the stored energy consumption data of the water meter, the electric meter, the gas meter and the heat meter to perform data interaction with the client according to the four-meter service logic and the client authentication information in the preset intelligent contract;
wherein the blockchain platform is developed based on a Fabric technology architecture.
2. The blockchain-based four-table gather system of claim 1, wherein the client-initiated interoperation request instructions include an interoperation request instruction of a personal user and an interoperation request instruction of a corporate user; wherein the content of the first and second substances,
the interactive operation request instruction of the personal user comprises a balance inquiry instruction, a form inquiry instruction and a recharging instruction;
the interactive operation request instruction of the company user comprises a newly added user network access instruction, a newly added table network access instruction, a user information query instruction, a table information query instruction and a table data query instruction.
3. A blockchain based four-table gather method implemented in a blockchain based four-table gather system according to claim 1 or 2, the method comprising the steps of:
the method comprises the steps that a data acquisition end acquires energy consumption data on a water meter, an electric meter, a gas meter and a heat meter, the acquired energy consumption data on the water meter, the electric meter, the gas meter and the heat meter are respectively encrypted according to respective preset public keys, and further after the energy consumption data on the water meter, the electric meter, the gas meter and the heat meter after data encryption are respectively signed according to respective preset private keys, the data are sent to a block chain platform;
the block chain platform receives and stores energy consumption data on the water meter, the electric meter, the gas meter and the heat meter which are sent by the data acquisition end and are subjected to data encryption and data signature, acquires client authentication information and feeds a request passing instruction back to the client after an access request initiated by an authentication client is valid, and further selects one of the stored energy consumption data of the water meter, the electric meter, the gas meter and the heat meter to perform data interaction with the client according to four-meter service logic and client authentication information in a preset intelligent contract after receiving an interactive operation request instruction initiated by the client;
wherein the blockchain platform is developed based on a Fabric technology architecture.
4. The blockchain-based four-table gather reading method according to claim 3, wherein the client-initiated interoperation request instruction includes an interoperation request instruction of a personal user and an interoperation request instruction of a company user; wherein the content of the first and second substances,
the interactive operation request instruction of the personal user comprises a balance inquiry instruction, a form inquiry instruction and a recharging instruction;
the interactive operation request instruction of the company user comprises a newly added user network access instruction, a newly added table network access instruction, a user information query instruction, a table information query instruction and a table data query instruction.
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| CN110796841A (en) * | 2019-10-22 | 2020-02-14 | 深圳供电局有限公司 | Multi-meter centralized reading method and device, computer equipment and medium |
| CN111080910A (en) * | 2019-11-15 | 2020-04-28 | 苏州浪潮智能科技有限公司 | Remote meter reading method and system based on block chain |
| CN112325966B (en) * | 2020-10-30 | 2023-12-08 | 重庆工商大学 | Differential privacy release method oriented to intelligent water meter data release behaviors |
| CN112633858A (en) * | 2021-01-05 | 2021-04-09 | 润联软件系统(深圳)有限公司 | Process approval processing method and system |
| CN113065897A (en) * | 2021-04-09 | 2021-07-02 | 海南电网有限责任公司 | Intelligent marketing management system and implementation method thereof |
| CN114499882A (en) * | 2022-01-27 | 2022-05-13 | 国网山西省电力公司营销服务中心 | Intelligent electric meter information uploading method based on block chain |
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| CN208888618U (en) * | 2018-10-18 | 2019-05-21 | 江苏丙辰电子有限公司 | A kind of remote transmitting water meter meter copying device based on GPRS communication |
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