An electric energy meter calibration method, device, equipment and storage medium

Abstract

This application discloses a method, apparatus, device, and storage medium for verifying an electricity meter, relating to the field of electricity metering technology. The method includes: acquiring a target signal transmitted by a wireless communication module; parsing the target signal and generating a standard electrical signal based on the parsing results; sending the standard electrical signal to a built-in standard electricity meter, so that the standard electricity meter can calculate the standard current and standard voltage signals in the standard electrical signal to generate corresponding standard pulses; and using the standard pulses generated by the standard electricity meter and the pulses under test to determine the error information of the target electricity meter under the current load, thereby completing the verification of the target electricity meter. By parsing the real-time electrical signal and generating a higher-precision standard electrical signal, which is then sent to the built-in high-precision standard electricity meter for calculation, a metering benchmark independent of the meter under test is constructed, enabling the verification results to have complete metering traceability.

Description

Technical Field

[0001] This invention relates to the field of electricity metering technology, and in particular to an electricity meter calibration method, apparatus, equipment, and storage medium. Background Technology

[0002] Current methods for verifying electricity meters involve using infrared probes to acquire characteristic data of the meter under test and uploading it to a backend system for trend analysis. This method is essentially data transfer and cannot independently and traceably verify the original accuracy of the meter's measuring unit. Summary of the Invention

[0003] In view of this, the purpose of this invention is to provide a method, apparatus, device, and storage medium for verifying electricity meters, capable of parsing real-time electrical signals and generating higher-precision standard electrical signals, which are then fed into a built-in high-precision standard electricity meter for calculation, constructing a metrological benchmark independent of the meter being tested, thus enabling the verification results to have complete metrological traceability. The specific solution is as follows: In a first aspect, this application provides a method for verifying an electricity meter, applied to an electricity meter verification device, comprising: Acquire the target signal transmitted by the local wireless communication module; the target signal includes the measured pulse and real-time electrical signal collected by the target energy meter under the current load; The target signal is analyzed, and a standard electrical signal is generated based on the analysis results. This standard electrical signal is then sent to a pre-built standard energy meter. The standard energy meter calculates the standard current and voltage signals within the standard electrical signal to generate corresponding standard pulses. The measurement accuracy of the standard energy meter is higher than that of the target energy meter. The amplitude, frequency, and phase of the standard electrical signal and the real-time electrical signal are identical. The signal accuracy of the standard electrical signal is higher than that of the real-time electrical signal. The error information of the target energy meter under the current load is determined by using the standard pulse generated by the standard energy meter and the pulse under test, so as to complete the verification of the target energy meter.

[0004] Optionally, the target signal includes the measured pulse, the real-time electrical signal, and the electrical pulse constant, internal clock, and maximum electrical demand corresponding to the target energy meter.

[0005] Optionally, the step of parsing the target signal and generating a standard electrical signal based on the corresponding parsing results includes: The real-time phase information corresponding to the real-time electrical signal is locked using a hardware phase-locked loop circuit, and the standard electrical signal is generated based on the real-time phase information.

[0006] Optionally, determining the error information of the target energy meter under the current load using the standard pulse generated by the standard energy meter and the measured pulse includes: The number of first pulses corresponding to the standard pulse and the number of second pulses corresponding to the measured pulse are measured respectively, and the target difference between the number of first pulses and the number of second pulses is determined. Calculate the target ratio between the target difference and the second pulse number, and determine the error information of the target energy meter under the current load based on the target ratio.

[0007] Optionally, the energy meter verification method further includes: The internal clock of the target energy meter is compared with the preset built-in clock in the device to obtain the corresponding comparison result; The clock deviation of the target energy meter is determined based on the comparison results, and the validity of the undervoltage event record and current loss event record of the target energy meter is analyzed based on the comparison results.

[0008] Optionally, after determining the error information of the target energy meter under the current load using the standard pulse generated by the standard energy meter and the measured pulse, the method further includes: Obtain the target verification result corresponding to the target energy meter; wherein, the target verification result includes the measurement error, clock deviation, and measurement event record of the target energy meter; Based on the target verification results, an electronic verification report corresponding to the target energy meter is generated, and the electronic verification report is archived.

[0009] Secondly, this application provides an energy meter calibration device, comprising: The signal acquisition module is used to acquire the target signal transmitted by the local wireless communication module; the target signal includes the measured pulse and real-time electrical signal collected by the target energy meter under the current load. The signal analysis module is used to analyze the target signal, generate a standard electrical signal based on the analysis results, and send the standard electrical signal to a pre-built standard energy meter. The standard energy meter then calculates the standard current and voltage signals within the standard electrical signal to generate corresponding standard pulses. The measurement accuracy of the standard energy meter is higher than that of the target energy meter. The amplitude, frequency, and phase of the standard electrical signal and the real-time electrical signal are identical. The signal accuracy of the standard electrical signal is higher than that of the real-time electrical signal. The error information determination module is used to determine the error information of the target energy meter under the current load by using the standard pulse generated by the standard energy meter and the measured pulse, so as to complete the verification of the target energy meter.

[0010] Optionally, the signal analysis module includes: An electrical signal generation unit is used to lock the real-time phase information corresponding to the real-time electrical signal using a hardware phase-locked loop circuit, and to generate the standard electrical signal based on the real-time phase information.

[0011] Thirdly, this application provides an electronic device, comprising: Memory, used to store computer programs; A processor is used to execute the computer program to implement the aforementioned electricity meter verification method.

[0012] Fourthly, this application provides a computer-readable storage medium for storing a computer program, which, when executed by a processor, implements the aforementioned electricity meter verification method.

[0013] This application first acquires the target signal transmitted by the local wireless communication module. The target signal includes the measured pulse and real-time electrical signal collected by the target energy meter under the current load. Then, the target signal is analyzed, and a standard electrical signal is generated according to the corresponding analysis results. The standard electrical signal is sent to the local pre-built standard energy meter so that the standard energy meter can calculate the standard current signal and standard voltage signal in the standard electrical signal to generate the corresponding standard pulse. The measurement accuracy of the standard energy meter is higher than that of the target energy meter. The amplitude, frequency, and phase of the standard electrical signal and the real-time electrical signal are the same. The signal accuracy of the standard electrical signal is higher than that of the real-time electrical signal. Finally, the error information of the target energy meter under the current load is determined by using the standard pulse generated by the standard energy meter and the measured pulse to complete the verification of the target energy meter. Therefore, this application completely replaces the physical connection of traditional test leads by using non-contact communication technology to read data, eliminating safety risks such as electric shock and short circuits caused by wiring, as well as cumbersome operations, and significantly improving efficiency. By analyzing real-time electrical signals and generating higher-precision standard electrical signals, which are then sent to the built-in high-precision standard energy meter for calculation, a metrological benchmark independent of the meter being tested is constructed. Finally, the standard pulse generated by this benchmark is compared with the pulse being tested to determine the error, ensuring that the verification results have complete metrological traceability and solving the deficiency of existing infrared solutions in terms of authoritative error verification. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of a method for verifying an electricity meter disclosed in this application; Figure 2 This is a schematic diagram of the module structure of an energy meter calibration device disclosed in this application; Figure 3 This application discloses a specific flowchart for electricity meter verification. Figure 4 This is a schematic diagram of the structure of an energy meter calibration device disclosed in this application; Figure 5 This is a structural diagram of an electronic device disclosed in this application. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] See Figure 1 As shown, this embodiment of the invention discloses a method for verifying an electricity meter, applied to an electricity meter verification device, comprising: Step S11: Obtain the target signal transmitted by the local wireless communication module; the target signal includes the measured pulse and real-time electrical signal collected by the target energy meter under the current load.

[0018] The device structure in this embodiment is as follows: Figure 2 As shown, it includes a multi-protocol infrared communication module, a central processing and signal reproduction module, a built-in standard energy meter module, an error calculation and logic judgment module, and a report generation module. Accordingly, the energy meter verification process in this embodiment is as follows: Figure 3 As shown, the process includes: establishing a communication connection between the device and the target energy meter and reading the target signal from it, parsing the data, calculating control parameters, starting the signal source, outputting standard current signal and standard voltage signal, inputting the standard current signal and standard voltage signal into the standard meter, and generating standard pulses for energy meter verification.

[0019] In this embodiment, the data acquisition process is handled by the aforementioned multi-protocol infrared communication module. This module consists of an infrared transmitter, an infrared receiver, an encoding / decoding circuit, and an embedded protocol stack. It is responsible for automatically identifying and adapting to the communication protocols used by different manufacturers and models of energy meters (supporting mainstream protocols such as DL / T645-1997, DL / T645-2007, and Modbus). After establishing a stable physical connection, it automatically identifies and adapts to the communication protocols of different energy meters, enabling high-speed and reliable reading of the "source data" (U, I, ...) from the meter under test. ) and status data (clock, events, demand, etc.).

[0020] That is, the target signal in this embodiment includes the measured pulse, the real-time electrical signal, and the electrical pulse constant, internal clock, and maximum electrical demand corresponding to the target energy meter.

[0021] Accordingly, the acquisition of the target signal transmitted by the local wireless communication module specifically includes: pointing the device's infrared port at the energy meter under test, powering on the device, and establishing a communication connection. Through infrared communication, the real-time electrical parameters (U, I, ...) of the meter under test are read. The data includes: energy pulse Px (i.e., the measured pulse), energy pulse constant K, internal clock Tm, event record, maximum demand (i.e., maximum energy demand), and current status.

[0022] By completely eliminating all physical wiring operations, the safety risks of electric shock to operators, short circuits in equipment, and arc flash injuries caused by incorrect wiring are fundamentally eliminated, allowing the verification work to be carried out safely in a live state.

[0023] It should be noted that the communication method in this embodiment is not limited to infrared. The contactless communication module can be replaced by Bluetooth, Zigbee, LoRa or a low-power wireless module based on a compliant frequency band (such as 470MHz).

[0024] In addition to directly reading the pulse output or power value through the communication protocol for conversion, a machine vision module can also be used as an alternative. This involves capturing the flashing of pulse indicator lights on the power supply panel using a camera, converting the images into equivalent pulse signals for comparison using an image analysis algorithm.

[0025] Step S12: Analyze the target signal and generate a standard electrical signal based on the analysis results. Send the standard electrical signal to a pre-built standard energy meter so that the standard energy meter can calculate the standard current signal and standard voltage signal in the standard electrical signal and generate a corresponding standard pulse. The measurement accuracy of the standard energy meter is higher than that of the target energy meter. The amplitude, frequency, and phase of the standard electrical signal and the real-time electrical signal are the same. The signal accuracy of the standard electrical signal is higher than that of the real-time electrical signal.

[0026] In this embodiment, the target signal is analyzed, and a standard electrical signal is generated based on the analysis results. This includes: using a hardware phase-locked loop circuit to lock the real-time phase information corresponding to the real-time electrical signal, and generating a standard electrical signal based on the real-time phase information. Furthermore, this embodiment can also employ a timestamp-based dynamic delay compensation algorithm to ensure phase consistency between the generated standard signal and the aforementioned real-time electrical signal.

[0027] By employing a timestamp-based dynamic delay compensation algorithm or applying a hardware phase-locked loop (PLL) circuit, it is ensured that the signal generated by the internal signal source of the device is synchronized in real time and strictly with the signal actually measured inside the energy meter, thereby guaranteeing the accuracy of subsequent pulse comparison.

[0028] The data parsing process described above is handled by the aforementioned central processing and signal reproduction module. This module is the core technology of this embodiment, consisting of a high-performance embedded processor (such as the ARM Cortex-A series), a digital signal processor (DSP), and a high-precision programmable AC signal source. It is responsible for receiving the "source data" and generating a standard voltage that is strictly synchronized with the source data in real time through the internally integrated high-precision programmable AC signal source (usually based on DDS (Direct Digital Synthesizer) technology and a high-resolution DAC (Digital-to-Analog Converter). and standard current .

[0029] The built-in standard energy meter module (i.e., the standard energy meter module) is an independent, high-accuracy energy metering unit that has passed the type approval for metering instruments and is responsible for processing the input standard signal. , Sampling and calculation are performed to output a high-frequency standard electrical energy pulse Ps (i.e., a standard pulse). Its accuracy class is usually selected as 0.05 or 0.1.

[0030] Specifically, the central processing unit (CPU) analyzes the data and calculates the control parameters required to drive the high-precision signal source. It then starts the signal source and outputs a standard electrical signal that is completely identical to the analyzed parameters (same amplitude, same frequency, same phase). and .Will and Connect to the built-in standard energy meter module. The built-in standard meter measures the standard signal and outputs a standard pulse Ps.

[0031] The core verification method of "source data-driven - signal reproduction - closed-loop comparison" is the most fundamental innovation of this embodiment. Specifically, it involves "obtaining real-time voltage, current, and phase data from the energy meter through contactless communication, then accurately reproducing the standard electrical signal that completely corresponds to these data within the verification device, inputting the standard signal into a built-in high-precision standard energy meter, and finally obtaining the error by comparing the output of the standard meter with the output of the meter under test." This method forms the basis for achieving wire-free operation and possessing all the effects of metering traceability.

[0032] This embodiment converts the data read from the electricity meter into a physical signal measured by a built-in high-level standard meter and compares it. This process is essentially the same as the traditional wired standard meter method in metrology. Therefore, the error results issued have the same legal effect and meet the requirements of the national metrological verification regulations.

[0033] It should be noted that there are multiple hardware implementation paths for the signal reproduction technology in this embodiment. In addition to the DDS and DAC-based schemes, the high-precision programmable signal source can also be implemented by using a high-precision function generator integrated circuit or a digital waveform synthesis scheme based on FPGA (Field Programmable Gate Array). The core is to be able to output the required standard signal with high fidelity.

[0034] Step S13: Use the standard pulse generated by the standard energy meter and the pulse under test to determine the error information of the target energy meter under the current load, so as to complete the verification of the target energy meter.

[0035] Under high-precision time base control, the error calculation module simultaneously opens the counting windows for the standard pulse Ps and the measured pulse Px to obtain the number of pulses Ns and Nx, respectively.

[0036] Under the same high-precision time base control, according to the formula (Where N0 is the theoretical number of pulses after conversion based on the pulse constant of the standard meter and the pulse constant of the meter under test), calculate the relative error of the meter under test at the current load point.

[0037] Accordingly, the error information of the target energy meter under the current load is determined by using the standard pulse generated by the standard energy meter and the measured pulse, including: measuring the number of first pulses corresponding to the standard pulse and the number of second pulses corresponding to the measured pulse, and determining the target difference between the number of first pulses and the number of second pulses; calculating the target ratio between the target difference and the number of second pulses, and determining the error information of the target energy meter under the current load based on the target ratio.

[0038] The aforementioned error judgment process is handled by the aforementioned error calculation and logic judgment module: this module is responsible for performing the core pulse comparison and error calculation, and simultaneously completing the logic judgment of all auxiliary verification items. It receives the pulse Ps from the built-in standard meter and the pulse Px from the meter under test obtained through infrared (or converted from the power value), counts them within the same time base, and calculates the relative error. At the same time, it automatically performs clock comparison, event record parsing, demand meter reading, and performs qualification judgment according to the procedure limits.

[0039] In addition, while completing the main process of core error calculation, this embodiment automatically triggers and completes the verification and judgment of auxiliary items such as clock deviation comparison, undervoltage and current loss event record parsing, and maximum demand and power consumption measurement, and finally automatically synthesizes an integrated control logic that includes a compliance report containing all the results of the items.

[0040] In other words, this embodiment compares Tm with the device's BeiDou / GPS clock; analyzes the validity of records of events such as voltage and current loss; and records demand and current data. Specifically, this embodiment can also compare the internal clock of the target energy meter with the preset built-in clock in the device to obtain the corresponding comparison results; determine the clock deviation of the target energy meter based on the comparison results; and analyze the validity of the voltage and current loss event records of the target energy meter based on the comparison results.

[0041] By integrating the measurement results and judgment conclusions of all items, including basic error, clock deviation, event logs, and demand indications, an electronic verification report is generated, containing complete original observation data and a final qualification conclusion. The verification report is displayed through a human-computer interaction interface and can be wirelessly transmitted and archived according to user instructions.

[0042] Accordingly, after determining the error information of the target energy meter under the current load using the standard pulse generated by the standard energy meter and the pulse under test, this embodiment further includes: obtaining the target verification result corresponding to the target energy meter; wherein, the target verification result includes the measurement error, clock deviation and measurement event record of the target energy meter; generating an electronic verification report corresponding to the target energy meter based on the target verification result, and archiving the electronic verification report.

[0043] In other words, the report generation module summarizes the error calculation results, the judgment conclusions of each auxiliary item, the asset information of the inspected form, the ambient temperature and humidity, the verification personnel and timestamps, and other full data, and automatically generates a formatted, complete and tamper-proof electronic inspection record report in accordance with the original record format specified in the appendix of the current regulations.

[0044] It should be noted that in this embodiment, the multi-protocol contactless communication module, high-precision programmable signal source, built-in standard energy meter module and central processing unit are all packaged in a portable housing and electrically connected and interact with data through an internal bus, thereby forming an independent "place and calibrate" device.

[0045] The application scope of this solution can be extended to similar instruments. The principle and equipment design of the wiring-free calibration method are also applicable to other civilian metering instruments with digital communication interfaces, such as water meters, gas meters, and heat meters, enabling "non-intrusive" on-site calibration.

[0046] Therefore, this application completely replaces the physical connection of traditional test leads by using non-contact communication technology to read data, eliminating safety risks such as electric shock and short circuits caused by wiring, as well as cumbersome operations, and significantly improving efficiency. By analyzing real-time electrical signals and generating higher-precision standard electrical signals, which are then sent to the built-in high-precision standard energy meter for calculation, a metrological benchmark independent of the meter being tested is constructed. Finally, the standard pulse generated by this benchmark is compared with the pulse being tested to determine the error, ensuring that the verification results have complete metrological traceability and solving the deficiency of existing infrared solutions in terms of authoritative error verification.

[0047] See Figure 4 As shown, an embodiment of the present invention discloses an energy meter calibration device, comprising: The signal acquisition module 11 is used to acquire the target signal transmitted by the local wireless communication module; the target signal includes the measured pulse and real-time electrical signal collected by the target energy meter under the current load. The signal analysis module 12 is used to analyze the target signal, generate a standard electrical signal based on the analysis results, and send the standard electrical signal to a pre-built standard energy meter. The standard energy meter then calculates the standard current and voltage signals in the standard electrical signal to generate corresponding standard pulses. The measurement accuracy of the standard energy meter is higher than that of the target energy meter. The amplitude, frequency, and phase of the standard electrical signal and the real-time electrical signal are the same. The signal accuracy of the standard electrical signal is higher than that of the real-time electrical signal. The error information determination module 13 is used to determine the error information of the target energy meter under the current load by using the standard pulse generated by the standard energy meter and the measured pulse, so as to complete the verification of the target energy meter.

[0048] In some specific embodiments, the signal analysis module 12 may specifically include: A standard electrical signal generation unit is used to lock the real-time phase information corresponding to the real-time electrical signal using a hardware phase-locked loop circuit, and generate the standard electrical signal based on the real-time phase information.

[0049] In some specific embodiments, the error information determination module 13 may specifically include: The difference determination unit is used to measure the number of first pulses corresponding to the standard pulse and the number of second pulses corresponding to the measured pulse, and to determine the target difference between the number of first pulses and the number of second pulses. An error information determination unit is used to calculate the target ratio between the target difference and the second pulse number, and to determine the error information of the target energy meter under the current load based on the target ratio.

[0050] In some specific embodiments, the electricity meter calibration device further includes: The clock comparison unit is used to compare the internal clock of the target energy meter with the preset built-in clock in the device to obtain the corresponding comparison result. The record validity analysis unit is used to determine the clock deviation of the target energy meter based on the comparison results, and to analyze the validity of the voltage loss event record and current loss event record of the target energy meter based on the comparison results.

[0051] In some specific embodiments, the error information determination module 13 further includes: The verification result acquisition unit is used to acquire the target verification result corresponding to the target energy meter; wherein, the target verification result includes the measurement error, clock deviation and measurement event record of the target energy meter; The result archiving unit is used to generate an electronic verification report corresponding to the target energy meter based on the target verification result, and to archive the electronic verification report.

[0052] Furthermore, embodiments of this application also disclose an electronic device, Figure 5 This is a structural diagram of an electronic device 20 according to an exemplary embodiment. The content of the diagram should not be construed as limiting the scope of this application.

[0053] Figure 5 This is a schematic diagram of the structure of an electronic device 20 provided in an embodiment of this application. Specifically, the electronic device 20 may include: at least one processor 21, at least one memory 22, a power supply 23, a communication interface 24, an input / output interface 25, and a communication bus 26. The memory 22 stores a computer program, which is loaded and executed by the processor 21 to implement the relevant steps in the electricity meter verification method disclosed in any of the foregoing embodiments. Alternatively, the electronic device 20 in this embodiment may specifically be an electronic computer.

[0054] In this embodiment, the power supply 23 is used to provide operating voltage for each hardware device on the electronic device 20; the communication interface 24 can create a data transmission channel between the electronic device 20 and external devices, and the communication protocol it follows can be any communication protocol applicable to the technical solution of this application, and is not specifically limited here; the input / output interface 25 is used to acquire external input data or output data to the outside world, and its specific interface type can be selected according to specific application needs, and is not specifically limited here.

[0055] In addition, the memory 22, as a carrier for resource storage, can be a read-only memory, random access memory, disk or optical disk, etc. The resources stored thereon can include operating system 221, computer program 222, etc., and the storage method can be temporary storage or permanent storage.

[0056] The operating system 221 is used to manage and control the various hardware devices on the electronic device 20 and the computer program 222, which may be Windows Server, Netware, Unix, Linux, etc. In addition to including a computer program capable of performing the electricity meter verification method executed by the electronic device 20 as disclosed in any of the foregoing embodiments, the computer program 222 may further include computer programs capable of performing other specific tasks.

[0057] Furthermore, this application also discloses a computer-readable storage medium for storing a computer program; wherein, when the computer program is executed by a processor, it implements the aforementioned disclosed method for verifying electricity meters. Specific steps of this method can be found in the corresponding content disclosed in the foregoing embodiments, and will not be repeated here.

[0058] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section.

[0059] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0060] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0061] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0062] The technical solutions provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for verifying an electricity meter, characterized in that, Applications to electricity meter calibration devices include: Acquire the target signal transmitted by the local wireless communication module; the target signal includes the measured pulse and real-time electrical signal collected by the target energy meter under the current load; The target signal is analyzed, and a standard electrical signal is generated based on the analysis results. This standard electrical signal is then sent to a pre-built standard energy meter. The standard energy meter calculates the standard current and voltage signals within the standard electrical signal to generate corresponding standard pulses. The measurement accuracy of the standard energy meter is higher than that of the target energy meter. The amplitude, frequency, and phase of the standard electrical signal and the real-time electrical signal are identical. The signal accuracy of the standard electrical signal is higher than that of the real-time electrical signal. The error information of the target energy meter under the current load is determined by using the standard pulse generated by the standard energy meter and the pulse under test, so as to complete the verification of the target energy meter.

2. The method for verifying an electricity meter according to claim 1, characterized in that, The target signal includes the measured pulse, the real-time electrical signal, and the electrical pulse constant, internal clock, and maximum electrical demand corresponding to the target energy meter.

3. The method for verifying an electricity meter according to claim 1, characterized in that, The step of parsing the target signal and generating a standard electrical signal based on the parsing results includes: The real-time phase information corresponding to the real-time electrical signal is locked using a hardware phase-locked loop circuit, and the standard electrical signal is generated based on the real-time phase information.

4. The method for verifying an electricity meter according to claim 1, characterized in that, The method of determining the error information of the target energy meter under the current load using the standard pulse generated by the standard energy meter and the measured pulse includes: The number of first pulses corresponding to the standard pulse and the number of second pulses corresponding to the measured pulse are measured respectively, and the target difference between the number of first pulses and the number of second pulses is determined. Calculate the target ratio between the target difference and the second pulse number, and determine the error information of the target energy meter under the current load based on the target ratio.

5. The method for verifying an electricity meter according to claim 1, characterized in that, Also includes: The internal clock of the target energy meter is compared with the preset built-in clock in the device to obtain the corresponding comparison result; The clock deviation of the target energy meter is determined based on the comparison results, and the validity of the undervoltage event record and current loss event record of the target energy meter is analyzed based on the comparison results.

6. The method for verifying an electricity meter according to any one of claims 1 to 5, characterized in that, After determining the error information of the target energy meter under the current load using the standard pulse generated by the standard energy meter and the measured pulse, the method further includes: Obtain the target verification result corresponding to the target energy meter; wherein, the target verification result includes the measurement error, clock deviation, and measurement event record of the target energy meter; Based on the target verification results, an electronic verification report corresponding to the target energy meter is generated, and the electronic verification report is archived.

7. An electricity meter calibration device, characterized in that, include: The signal acquisition module is used to acquire the target signal transmitted by the local wireless communication module; The target signal includes the measured pulse and real-time electrical signal collected by the target energy meter under the current load; The signal analysis module is used to analyze the target signal, generate a standard electrical signal based on the analysis results, and send the standard electrical signal to a pre-built standard energy meter. The standard energy meter then calculates the standard current and voltage signals within the standard electrical signal to generate corresponding standard pulses. The measurement accuracy of the standard energy meter is higher than that of the target energy meter. The amplitude, frequency, and phase of the standard electrical signal and the real-time electrical signal are identical. The signal accuracy of the standard electrical signal is higher than that of the real-time electrical signal. The error information determination module is used to determine the error information of the target energy meter under the current load by using the standard pulse generated by the standard energy meter and the measured pulse, so as to complete the verification of the target energy meter.

8. The electricity meter calibration device according to claim 7, characterized in that, The signal analysis module includes: An electrical signal generation unit is used to lock the real-time phase information corresponding to the real-time electrical signal using a hardware phase-locked loop circuit, and to generate the standard electrical signal based on the real-time phase information.

9. An electronic device, characterized in that, Includes wireless communication modules and standard energy meters; also includes: Memory, used to store computer programs; A processor for executing the computer program to implement the electricity meter verification method as described in any one of claims 1 to 6.

10. A computer-readable storage medium, characterized in that, Used to store a computer program, which, when executed by a processor, implements the electricity meter verification method as described in any one of claims 1 to 6.

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