Intelligent electric meter verification system and method with data traceability function

Abstract

The invention discloses an intelligent electric meter calibration system and method with a data traceability function, and the system and method achieve the precise calibration and whole-process information management of an intelligent electric meter through the organic combination of a standard source, a detection module and a data management module. The standard voltage output end of the standard source is electrically connected with the voltage input end of the detection module, the standard current output end of the standard source is electrically connected with the current input end of the detection module, and a closed loop is formed through the output end of the detection module and the feedback input end of the standard source, so that the standard source can obtain real-time feedback in the output process. The detection module is composed of a plurality of detection tools which are cascaded in series, each detection tool can be respectively matched with the intelligent electric meters with different shell structures, and the simultaneous detection of multiple meters is realized in a mode of voltage parallel input and current series input and output, so that the problem that a traditional large-scale meter calibration table cannot be matched with an electric meter with a new structure is solved; the time required for the access and disassembly of the electric meter is significantly reduced, and the detection efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of smart meter calibration technology with data traceability function, and in particular to a smart meter calibration system and method with data traceability function. Background Technology

[0002] With the widespread application of smart meters in the power industry, the production, calibration, and management of these meters have gradually become crucial aspects of power equipment manufacturing. As a vital tool for measuring electrical energy, the accuracy and functionality of smart meters directly impact the accuracy of metering, billing, and data analysis in the power system. Therefore, how to efficiently and accurately calibrate smart meters to ensure their metering accuracy and functional stability has become a pressing technical challenge for meter manufacturers.

[0003] Currently, the production and calibration of smart meters mostly rely on traditional large-scale calibration benches. These benches transmit signals by manually connecting the meter's terminals to the bench, then calibrate and test the meter. While large calibration benches play a crucial role in meter calibration, they have several significant drawbacks. First, large calibration benches are expensive to purchase, bulky, and difficult to maintain; repairs after malfunctions take considerable time, disrupting production. Second, traditional calibration benches are typically suitable for relatively fixed meter structures. For newer meters (such as DIN rail meters), due to their different terminal arrangements, direct calibration is difficult, requiring connections via extension cables, reducing production efficiency. Furthermore, the calibration process still requires manual insertion and removal of each meter terminal, a tedious and error-prone operation that results in low calibration efficiency and a significant risk of human error.

[0004] Therefore, in the production process of smart meters, how to improve verification efficiency, quickly adapt to various meter structures, reduce errors caused by manual operation, and achieve full-process automated management has become an urgent problem to be solved. Summary of the Invention

[0005] This application provides a smart meter calibration system and method with data traceability function, aiming to solve the problems of how to improve calibration efficiency, adapt to various meter structures, and reduce errors caused by manual operation in the smart meter production process.

[0006] Firstly, a smart meter calibration system with data traceability function, the system comprising:

[0007] The system includes a standard source, a detection module, and a data management module;

[0008] The standard voltage output terminal of the standard source is electrically connected to the voltage input terminal of the detection module, and the standard current output terminal of the standard source is electrically connected to the current input terminal of the detection module; the output terminal of the detection module is electrically connected to the feedback input terminal of the standard source.

[0009] The detection module includes multiple cascaded detection fixtures, each of which is matched with the housing structure of the smart meter to be tested. Each detection fixture is used to connect to the corresponding smart meter to be tested and output a standard power signal.

[0010] The voltage input terminals of multiple testing fixtures are all electrically connected to the standard voltage output terminal of the standard source. The current input terminal of the first testing fixture is electrically connected to the standard current output terminal of the standard source. The current input terminals of the other testing fixtures are electrically connected to the current output terminals of the testing fixture preceding them. The current output terminal of the last testing fixture is electrically connected to the feedback input terminal of the standard source. The other testing fixtures are any of the multiple testing fixtures except the first one.

[0011] The input terminal of the data management module is electrically connected to the data interface of the standard source and the detection module, respectively. The data management module is used to record and store the key information of the smart meter under test, including the meter number, accuracy data, function, and factory setting parameters of the smart meter under test.

[0012] In the above scheme, optionally, the standard source includes a standard current output module, a standard voltage output module, and a metering pulse detection module.

[0013] In the above scheme, each optional testing fixture includes a rear terminal board (1), a front panel (2), a switching power supply (3), a PCB board (4), a time calibrator (5), a barcode scanner (6), a probe assembly (7), a DIDO controller (8), a serial port server (9), and a top panel (10).

[0014] In the above scheme, the optional rear terminal board (1) includes an AC220 socket, a first standard current interface, a first standard voltage interface and a metering pulse interface;

[0015] The front panel (2) includes a switch module, a start button, and an indicator light module;

[0016] The PCB board (4) includes an internal power module;

[0017] The time synchronization device (5) includes a first second pulse detection module and a first RS485 module;

[0018] The probe assembly (7) includes a second second pulse detection module, a relay output module, a first standard current input terminal, a standard voltage input terminal, a metering pulse output module, and a second RS485 module.

[0019] The DIDO controller (8) includes a panel control module, a digital input module, a second standard current input terminal, a standard current output terminal, and a third RS485 module.

[0020] In the above scheme, the output terminal of the optional standard current output module is electrically connected to the second standard current input terminal through the first standard current interface, and the standard current output terminal is electrically connected to the first standard current input terminal;

[0021] The output terminal of the standard voltage output module is electrically connected to the standard voltage input terminal through the first standard voltage interface;

[0022] The output terminal of the metering pulse output module is electrically connected to the input terminal of the metering pulse detection module through the metering pulse interface.

[0023] In the above scheme, the output terminal of the optional AC220 socket is electrically connected to the input terminal of the switch module, the output terminal of the switch module is electrically connected to the input terminal of the switching power supply (3), and the output terminal of the switching power supply (3) is electrically connected to the input terminal of the internal power module.

[0024] The output terminal of the start button is electrically connected to the input terminal of the panel control module, and the output terminal of the panel control module is electrically connected to the input terminal of the indicator light module.

[0025] The first second pulse detection module is electrically connected to the second second pulse detection module;

[0026] The output terminal of the relay output module is electrically connected to the input terminal of the digital input module;

[0027] The first RS485 module, the barcode scanner (6), the second RS485 module and the third RS485 module are electrically connected to the serial port server (9).

[0028] Secondly, a method for verifying a smart meter, the method comprising:

[0029] The identity information of the smart meter to be tested is scanned and entered using a barcode scanner.

[0030] After the identity information of the smart meter to be tested is entered, the standard voltage and standard current of the standard source are loaded onto the smart meter to be tested, and the meter calibration process is started.

[0031] The smart meter under test is subjected to metrological calibration and functional testing to obtain the verification results;

[0032] The calibration results are transmitted to the data management module, and key information of the smart meter under test is recorded and stored.

[0033] Optionally, in the above scheme, the step of performing metrological calibration and functional testing on the smart meter under test to obtain the verification result includes:

[0034] Perform self-calibration on the smart meter under test, and determine whether the smart meter under test has successfully self-calibrated;

[0035] If the smart meter under test successfully self-calibrates, the standard current output from the standard source is cut off, and the smart meter under test is time-calibrated.

[0036] Determine whether the smart meter under test has successfully calibrated its time. If the smart meter under test has successfully calibrated its time, set the factory information of the smart meter under test, and then obtain the key information of the smart meter.

[0037] Optionally, the method further includes:

[0038] If the smart meter under test fails to self-calibrate or fails to synchronize its time, troubleshooting will be performed on the smart meter under test.

[0039] If the fault of the smart meter under test is successfully diagnosed, repeat the above steps of scanning and entering the identity information of the smart meter under test using a barcode scanner.

[0040] Compared with the prior art, this application has at least the following beneficial effects:

[0041] Based on further analysis and research of existing technical problems, this application recognizes the challenges in improving calibration efficiency, adapting to various meter structures, and reducing errors caused by manual operation during the production process of smart meters. By organically combining a standard source, a detection module, and a data management module, it achieves accurate calibration and full-process information management of smart meters. The standard voltage output terminal of the standard source is electrically connected to the voltage input terminal of the detection module, and the standard current output terminal is electrically connected to the current input terminal of the detection module. A closed loop is formed between the output terminal of the detection module and the feedback input terminal of the standard source, enabling the standard source to obtain real-time feedback during the output process. This ensures the stability and accuracy of the voltage and current signals, improving the reliability of calibration data. The detection module consists of multiple cascaded detection fixtures and achieves simultaneous testing of multiple meters through parallel voltage input and series current input / output. This not only solves the problem of traditional large-scale meter calibration benches being unable to quickly adapt to new meter structures but also significantly reduces the time required for meter connection and disconnection, improving testing efficiency. The data management module, electrically connected to the standard source and testing module via data interfaces, automatically receives, records, and stores key information such as meter number, accuracy data, functions, and factory settings throughout the entire meter calibration process. This establishes an independent data file for each meter, enabling traceable management from the start of calibration. Therefore, this solution improves the efficiency and flexibility of the calibration process while ensuring testing accuracy, and achieves full recording and management of meter information, effectively solving the problems of production stagnation, low efficiency, and lack of traceability in the background technology. Attached Figure Description

[0042] Figure 1 A framework diagram of a smart meter calibration system with data traceability function provided in one embodiment of this application;

[0043] Figure 2 A schematic diagram of the framework of a smart meter calibration system with data traceability function provided in one embodiment of this application;

[0044] Figure 3 This is a schematic diagram illustrating the internal logic of a verification system provided in one embodiment of this application;

[0045] Figure 4 This is a schematic diagram of the workflow of a smart meter calibration system with data traceability function provided in one embodiment of this application. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0047] In the description of this application: unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," etc., in this application are intended to distinguish the objects referred to and do not have any special meaning in terms of technical connotation (e.g., they should not be construed as an emphasis on importance or order). Expressions such as "comprising," "including," and "having" also mean "not limited to" (certain units, components, materials, steps, etc.).

[0048] In one embodiment, such as Figure 1 As shown, a smart meter calibration system with data traceability function is provided. The system includes a standard source, a testing module, and a data management module.

[0049] The standard voltage output terminal of the standard source is electrically connected to the voltage input terminal of the detection module, and the standard current output terminal of the standard source is electrically connected to the current input terminal of the detection module; the output terminal of the detection module is electrically connected to the feedback input terminal of the standard source.

[0050] The detection module includes multiple cascaded detection fixtures, each of which is matched with the housing structure of the smart meter to be tested. Each detection fixture is used to connect to the corresponding smart meter to be tested and output a standard power signal.

[0051] The voltage input terminals of multiple testing fixtures are all electrically connected to the standard voltage output terminal of the standard source. The current input terminal of the first testing fixture is electrically connected to the standard current output terminal of the standard source. The current input terminals of the other testing fixtures are electrically connected to the current output terminals of the testing fixture preceding them. The current output terminal of the last testing fixture is electrically connected to the feedback input terminal of the standard source. The other testing fixtures are any of the multiple testing fixtures except the first one.

[0052] The input terminal of the data management module is electrically connected to the data interface of the standard source and the detection module, respectively. The data management module is used to record and store the key information of the smart meter under test, including the meter number, accuracy data, function, and factory setting parameters of the smart meter under test.

[0053] In this embodiment, the standard source includes a standard current output module, a standard voltage output module, and a metering pulse detection module.

[0054] In this embodiment, each testing fixture includes a rear terminal board (1), a front panel (2), a switching power supply (3), a PCB board (4), a time calibrator (5), a barcode scanner (6), a probe assembly (7), a DIDO controller (8), a serial port server (9), and a top panel (10).

[0055] In this embodiment, the rear terminal block (1) includes an AC220 socket, a first standard current interface, a first standard voltage interface, and a metering pulse interface;

[0056] The front panel (2) includes a switch module, a start button, and an indicator light module;

[0057] The PCB board (4) includes an internal power module;

[0058] The time synchronization device (5) includes a first second pulse detection module and a first RS485 module;

[0059] The probe assembly (7) includes a second second pulse detection module, a relay output module, a first standard current input terminal, a standard voltage input terminal, a metering pulse output module, and a second RS485 module.

[0060] The DIDO controller (8) includes a panel control module, a digital input module, a second standard current input terminal, a standard current output terminal, and a third RS485 module.

[0061] In this embodiment, the output terminal of the standard current output module is electrically connected to the second standard current input terminal through the first standard current interface, and the standard current output terminal is electrically connected to the first standard current input terminal;

[0062] The output terminal of the standard voltage output module is electrically connected to the standard voltage input terminal through the first standard voltage interface;

[0063] The output terminal of the metering pulse output module is electrically connected to the input terminal of the metering pulse detection module through the metering pulse interface.

[0064] In this embodiment, the output terminal of the AC220 socket is electrically connected to the input terminal of the switch module, the output terminal of the switch module is electrically connected to the input terminal of the switching power supply (3), and the output terminal of the switching power supply (3) is electrically connected to the input terminal of the internal power supply module.

[0065] The output terminal of the start button is electrically connected to the input terminal of the panel control module, and the output terminal of the panel control module is electrically connected to the input terminal of the indicator light module.

[0066] The first second pulse detection module is electrically connected to the second second pulse detection module;

[0067] The output terminal of the relay output module is electrically connected to the input terminal of the digital input module;

[0068] The first RS485 module, the barcode scanner (6), the second RS485 module and the third RS485 module are electrically connected to the serial port server (9).

[0069] This embodiment achieves precise calibration and full-process information management of smart meters through the organic integration of a standard source, a detection module, and a data management module. The standard voltage output terminal of the standard source is electrically connected to the voltage input terminal of the detection module, and the standard current output terminal is electrically connected to the current input terminal of the detection module. A closed loop is formed between the output terminal of the detection module and the feedback input terminal of the standard source, enabling the standard source to receive real-time feedback during the output process. This ensures the stability and accuracy of the voltage and current signals, improving the reliability of the calibration data. The detection module consists of multiple cascaded detection fixtures, each compatible with smart meters of different housing structures. Simultaneous testing of multiple meters is achieved through parallel voltage input and series current input / output. This not only solves the problem of traditional large-scale meter calibration benches being unable to adapt to new meter structures but also significantly reduces the time required for meter connection and disconnection, improving testing efficiency. The data management module, electrically connected to the standard source and testing module via data interfaces, automatically receives, records, and stores key information such as meter number, accuracy data, functions, and factory settings throughout the entire meter calibration process. This establishes an independent data file for each meter, enabling traceable management from the start of calibration. Therefore, this solution improves the efficiency and flexibility of the calibration process while ensuring testing accuracy, and achieves full recording and management of meter information, effectively solving the problems of production stagnation, low efficiency, and lack of traceability in the background technology.

[0070] In one embodiment, a method for verifying a smart meter is provided, utilizing a smart meter calibration system with data traceability functionality. The method includes:

[0071] The identity information of the smart meter to be tested is scanned and entered using a barcode scanner.

[0072] After the identity information of the smart meter to be tested is entered, the standard voltage and standard current of the standard source are loaded onto the smart meter to be tested, and the meter calibration process is started.

[0073] The smart meter under test is subjected to metrological calibration and functional testing to obtain the verification results;

[0074] The calibration results are transmitted to the data management module, and key information of the smart meter under test is recorded and stored.

[0075] In this embodiment, the process of performing metrological calibration and functional testing on the smart meter under test to obtain the verification result includes:

[0076] Perform self-calibration on the smart meter under test, and determine whether the smart meter under test has successfully self-calibrated;

[0077] If the smart meter under test successfully self-calibrates, the standard current output from the standard source is cut off, and the smart meter under test is time-calibrated.

[0078] Determine whether the smart meter under test has successfully calibrated its time. If the smart meter under test has successfully calibrated its time, set the factory information of the smart meter under test, and then obtain the key information of the smart meter.

[0079] In this embodiment, the method further includes:

[0080] If the smart meter under test fails to self-calibrate or fails to synchronize its time, troubleshooting will be performed on the smart meter under test.

[0081] If the fault of the smart meter under test is successfully diagnosed, repeat the above steps of scanning and entering the identity information of the smart meter under test using a barcode scanner.

[0082] In one embodiment, most current smart meter manufacturers still use traditional large-scale calibration benches to calibrate their meters. The general process is as follows:

[0083] Use an electric screwdriver to connect the load terminals of the smart meter to be tested one by one to the meter calibration table and fix the meter in place.

[0084] Load the standard source signal, start the calibration operation, and manually observe the calibration results;

[0085] Manually test the load switch, communication interface, and other function options one by one.

[0086] Use specialized equipment to perform initial function settings and initialization on qualified products.

[0087] Remove the electricity meter, seal it, affix the meter number barcode, scan the barcode, package it, and put it into storage.

[0088] Existing large calibration consoles are expensive to purchase, occupy a large area, and are difficult and time-consuming to repair when core components malfunction.

[0089] Large meter calibration stations are typically used to calibrate smart meters that use bottom-out wiring. For meters with new housing structures, such as many rail-mounted meters, the arrangement of the load terminals is incompatible with the calibration station, so they cannot be directly mounted for calibration and must be connected via extension cables, which greatly reduces production efficiency.

[0090] Even if the load terminals can be matched with the calibration stand, all load terminals on each meter to be tested need to be loosened before testing, inserted into the calibration stand, and then tightened. After calibration, a complete reverse operation is required, which takes a lot of time and is inefficient.

[0091] Without other information interaction interfaces, it can only verify the metering accuracy and time accuracy of the smart meter, and cannot complete the function settings.

[0092] Production management methods that cannot achieve traceability;

[0093] For small signal terminals, incomplete connection is a common problem, which can lead to misjudgments and affect production progress.

[0094] This embodiment reduces the impact of production stoppages caused by malfunctions of large calibration stations;

[0095] It can quickly perform calibration work on electricity meters with any new casing;

[0096] The entire process, including precision calibration, function setting, and finished product registration, is automated, reducing the chance of human error in the verification process.

[0097] From the moment each smart meter goes online for testing, all information is automatically recorded for easy traceability in the future.

[0098] Reduce the time spent installing and removing smart meters during the verification process, and improve efficiency.

[0099] To address the pain points of traditional electricity meter production and improve production efficiency, a new solution was planned and designed. The hardware of this solution mainly consists of two parts: a standard source and a testing fixture.

[0100] Standard source: Purchased externally. Small size, low price, multiple can be purchased as backups, and can be easily and immediately replaced if there is a problem, with minimal impact on production.

[0101] Electricity meter testing fixture: For each type of electricity meter housing, a dedicated smart meter testing fixture can be customized to quickly adapt to the ever-increasing number of new housing structures.

[0102] like Figure 2As shown, the voltage in the smart meter calibration system framework is actually connected in parallel, while the current is connected in series, with the current ultimately returning to the standard source. Theoretically, this scheme can connect more fixtures; however, considering the effective working range of an operator, three units are a more reasonable configuration.

[0103] The standard source is used to output standard voltage and current (e.g., AC220V / 5A / 0.5L) to the fixture. The fixture is connected to the smart meter, and the software sends commands to the smart meter through the RS485 interface. The smart meter then automatically completes the metering calibration.

[0104] The jig includes the following components:

[0105]

[0106] The internal logical relationship of the entire verification system is as follows: Figure 3 As shown, the workflow is as follows Figure 4 As shown;

[0107] By adopting this system, the following effects can be achieved:

[0108] Improved finished product management: Since the testing starts by scanning a QR code containing the meter's identification information, all key information about the meter can be recorded, including the meter number, accuracy data, functions, and factory settings. This greatly facilitates subsequent product maintenance.

[0109] Fully automatic operation ensures the product's accuracy level, with no missed inspection items and no missing or duplicate numbers.

[0110] This significantly increases production speed. Taking three-phase rail meters as an example, the original large calibration bench with 12 positions required checking 12 meters at a time, taking at least half an hour and averaging 150 seconds per meter. The new calibration system uses three fixtures to check three meters at a time, completing the process in just 90 seconds, averaging only 30 seconds per fixture, thus greatly improving calibration efficiency.

[0111] It can adapt to almost all different meter structures. By simply making new fixtures based on their contact characteristics, the testing environment can be set up in no more than 2 weeks, enabling the rapid launch of products needed by the market and improving the competitiveness of enterprise products.

[0112] By using a fixture, new meter housings can be adapted flexibly and quickly, replacing the traditional method that requires adding a new meter calibration station.

[0113] By using fixtures, the time for loading and unloading smart meters during testing is reduced to the second level, thus improving production efficiency.

[0114] The power supply and data information required in the verification process are sorted out, and the verification process is rationally integrated with the software to achieve fully automated management of production processes such as calibration, testing, and warehousing, eliminating the omissions of manual operation.

[0115] By binding key information such as the meter number, an identity file is established for all manufactured meters, facilitating future traceability.

[0116] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A smart meter calibration system with data traceability function, characterized in that, The system comprises a standard source, a detection module and a data management module; The standard voltage output end of the standard source is electrically connected with the voltage input end of the detection module, and the standard current output end of the standard source is electrically connected with the current input end of the detection module; the output end of the detection module is electrically connected with the feedback input end of the standard source; The detection module comprises a plurality of detection jigs connected in series, each detection jig is matched with the shell structure of the smart electric meter to be detected, and each detection jig is used for connecting the corresponding smart electric meter to be detected and outputting a standard electric energy signal; The voltage input end of each detection jig is electrically connected with the standard voltage output end of the standard source, the current input end of the first detection jig in the plurality of detection jigs is electrically connected with the standard current output end of the standard source, the current input end of the other detection jigs is electrically connected with the current output end of the detection jig of the previous stage, and the current output end of the last detection jig in the plurality of detection jigs is electrically connected with the feedback input end of the standard source; wherein the other detection jig is any detection jig in the plurality of detection jigs except the first detection jig; The input end of the data management module is electrically connected with the data interface of the standard source and the detection module respectively, and the data management module is used for recording and storing the key information of the smart electric meter to be detected, the key information comprising the meter number, precision data, function and factory setting parameter of the smart electric meter to be detected.

2. The system of claim 1, wherein, The standard source comprises a standard current output module, a standard voltage output module and a metering pulse detection module.

3. The system of claim 2, wherein, Each detection jig comprises a rear terminal plate (1), a front panel (2), a switching power supply (3), a PCB board (4), a time calibration instrument (5), a code scanning gun (6), a probe assembly (7), a DIDO controller (8), a serial server (9) and an upper panel (10).

4. The system of claim 3, wherein, The rear terminal plate (1) comprises an AC220 socket, a first standard current interface, a first standard voltage interface and a metering pulse interface; The front panel (2) comprises a switching module, a start button and an indicator light module; The PCB board (4) comprises an internal power supply module; The time calibration instrument (5) comprises a first second pulse detection module and a first RS485 module; The probe assembly (7) comprises a second second pulse detection module, a relay output module, a first standard current access terminal, a standard voltage access terminal, a metering pulse output module and a second RS485 module; The DIDO controller (8) comprises a panel control module, a digital quantity input module, a second standard current access terminal, a standard current output terminal and a third RS485 module.

5. The system of claim 4, wherein, The output end of the standard current output module is electrically connected with the second standard current access terminal through the first standard current interface, and the standard current output terminal is electrically connected with the first standard current access terminal; The output end of the standard voltage output module is electrically connected with the standard voltage access terminal through the first standard voltage interface; The output end of the metering pulse output module is electrically connected with the input end of the metering pulse detection module through the metering pulse interface.

6. The system of claim 4, wherein, The output end of the AC 220 socket is electrically connected with the input end of the switching module, the output end of the switching module is electrically connected with the input end of the switching power supply (3), and the output end of the switching power supply (3) is electrically connected with the input end of the internal power supply module; The output end of the starting button is electrically connected with the input end of the panel control module, and the output end of the panel control module is electrically connected with the input end of the indicator lamp module; The first second pulse detection module is electrically connected with the second second pulse detection module. The output end of the relay output module is electrically connected with the input end of the digital quantity input module. The first RS485 module, the code scanning gun (6), the second RS485 module and the third RS485 module are respectively electrically connected with the serial port server (9).

7. A method for calibrating a smart meter, using the smart meter calibration system with data traceability function according to any one of claims 1-6, characterized in that, The method comprises: The identity information of the to-be-detected smart meter is scanned and input by the code scanning gun; After the identity information of the to-be-detected smart meter is input, the standard voltage and the standard current of the standard source are loaded to the to-be-detected smart meter, and the meter calibration process is started; The to-be-detected smart meter is calibrated and functionally tested to obtain a calibration result; The calibration result is transmitted to the data management module, and the key information of the to-be-detected smart meter is recorded and stored.

8. The method of claim 7, wherein, The calibration and functional testing of the to-be-detected smart meter to obtain the calibration result comprises: The to-be-detected smart meter is self-calibrated, and whether the to-be-detected smart meter is successfully self-calibrated is determined; In the case that the to-be-detected smart meter is successfully self-calibrated, the standard current output by the standard source is cut off, and the to-be-detected smart meter is time-set; It is determined whether the to-be-detected smart meter is successfully time-set, and in the case that the to-be-detected smart meter is successfully time-set, the factory information of the to-be-detected smart meter is set, and then the key information of the smart meter is obtained.

9. The method of claim 8, wherein, The method further comprises: In the case that the to-be-detected smart meter fails to be self-calibrated or the to-be-detected smart meter fails to be time-set, the to-be-detected smart meter is fault-troubled; In the case that the fault troubleshooting of the to-be-detected smart meter is successful, the above-mentioned step of scanning and inputting the identity information of the to-be-detected smart meter by the code scanning gun is re-executed.

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