A power meter calibration device and method based on Bluetooth communication

Abstract

The application provides a kind of electric energy meter calibration device and method based on bluetooth communication, the device includes: man-machine interaction unit, main control unit, sub-control unit, working condition unit, table position unit, table position unit further includes communication module and code scanning module;Wherein, man-machine interaction unit and main control unit are connected, and pre-inspection instruction is issued to main control unit through man-machine interaction unit, main control unit and sub-control unit are connected, each sub-control unit is connected with one working condition unit and several table position units respectively, and sub-control unit controls working condition unit to provide the voltage and current required for the electric energy meter to be tested to provide calibration;Each communication module and the electric energy meter to be tested establish one-to-one connection, and code scanning module is used to identify bar code on electric energy meter.The application can effectively avoid the same frequency interference, and adopt the mode of main control-sub-control, reduce the pressure of data processing, improve the speed and efficiency of data processing and calibration.

Description

Technical Field

[0001] This invention relates to the field of calibration and testing technology for measuring instruments, and more specifically, to a device and method for calibrating an electricity meter based on Bluetooth communication. Background Technology

[0002] Currently, smart meters are commonly tested using wired communication, such as RS485, with auxiliary terminals providing pulse output. However, this method suffers from low testing efficiency and unstable terminal pin contact, among other drawbacks. The next generation of multi-core modular smart meters will use Bluetooth communication instead of RS485. The testing platform itself needs to be modified accordingly to switch to Bluetooth communication. However, like other wireless modules, Bluetooth can experience data loss issues. Furthermore, when multiple meters are being tested, co-channel interference is inevitable, affecting data transmission.

[0003] Prior art document 1 discloses a Bluetooth frequency hopping algorithm. Since Bluetooth operates in the 2.4 GHz band, a band used by many wireless devices and extremely susceptible to interference, Bluetooth employs a frequency hopping algorithm to reduce interference during communication. Bluetooth defines 40 radio frequency channels in the 2.4 GHz ISM band. These radio frequency channels are divided into three types: advertising, periodic, and data channels. Two communicating devices use the same physical channel. To achieve this, their transceivers must be simultaneously tuned to the same radio frequency channel. When Bluetooth communicates, the physical channel used by the devices constantly changes. The two connected Bluetooth devices must follow the same channel change pattern to ensure communication on the same channel; this is the Bluetooth frequency hopping algorithm. However, the automatic frequency hopping technology designed by the existing technology jumps to random channels. When many Bluetooth devices are used together, the automatic frequency hopping may jump to a channel that has already been used. Some will automatically hop again until an empty channel is found. This method wastes a lot of time in actual operation. Sometimes, even if it jumps to a channel that has already been used, but there are not many Bluetooth devices using that channel, so it is not enough to trigger automatic frequency hopping. This may also cause interference and affect data transmission. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a Bluetooth-based energy meter calibration device, which can effectively avoid co-channel interference during the calibration process and improve calibration efficiency.

[0005] The present invention adopts the following technical solution.

[0006] A power meter calibration device based on Bluetooth communication includes: a human-machine interaction unit, a main control unit, a sub-control unit, an operating condition unit, and a meter position unit. The meter position unit further includes a communication module and a barcode scanning module.

[0007] The human-machine interaction unit is connected to the main control unit. The human-machine interaction unit sends pre-inspection instructions to the main control unit. The main control unit is connected to the sub-control units. Each sub-control unit is connected to a working condition unit and several meter position units. The sub-control unit controls the working condition unit to provide the voltage and current required for the verification of the energy meter to be verified.

[0008] Each communication module establishes a one-to-one connection with the energy meter to be tested, and the barcode scanning module is used to identify the barcode on the energy meter.

[0009] Preferably, each table unit is provided with a communication module and a barcode scanning module, and the number of communication modules in the device is at least 2, and the number of barcode scanning modules is the same as the number of communication modules.

[0010] Preferably, the communication module adopts a Bluetooth communication module, and the Bluetooth communication protocol adopts Bluetooth 5.0.

[0011] Preferably, the number of sub-control units is set according to the number of communication modules of the table unit connected to them, and each sub-control unit can connect to 2 to 10 communication modules.

[0012] Preferably, when the main control module receives the pre-inspection command, it allocates different frequency band ranges to each sub-control unit, and then the sub-control unit allocates different frequency bands to each communication module.

[0013] Preferably, the frequency band allocation standard is as follows: within the 2.4G to 2.48G frequency band range, frequency bands are allocated in increments of 2MHz.

[0014] Preferably, the operating condition unit corresponding to the sub-control unit can provide current and voltage to the meter unit under the sub-control unit respectively. Each operating condition unit includes several output terminals, and the operating condition unit is connected to the sub-control unit. The sub-control unit is connected to several communication modules. Then, the number of output terminals of the operating condition unit is the same as the number of communication modules under the sub-control unit.

[0015] The present invention also provides a method for calibrating an energy meter based on Bluetooth communication, comprising the following steps:

[0016] Step 1: The inspector issues a pre-inspection command to the main control unit through the human-machine interaction unit. After receiving the pre-inspection command, the main control unit allocates frequency band ranges to each sub-control unit, and the frequency bands of each sub-control unit are not repeated.

[0017] Step 2: Scan the identification barcode of the energy meter to be tested using the barcode scanning module, and connect the energy meter to the corresponding meter unit;

[0018] Step 3: The sub-control unit allocates a frequency band to the communication module and controls the operating condition unit to power on the connected energy meters, connect the communication module to the energy meter via Bluetooth and obtain the Bluetooth address of the energy meter to be tested.

[0019] Step 4: The communication module performs frequency hopping with the energy meter under test via Bluetooth protocol, hopping to the assigned frequency band. After receiving a positive response from the energy meter under test via Bluetooth, it performs frequency hopping again and then reconnects. At this time, the communication module and the energy meter under test communicate within the agreed frequency.

[0020] Step 5: After the inspector issues the test command through the human-machine interaction unit, the sub-control unit controls the working condition unit to provide the current and voltage working conditions required for the test. The communication module receives the wireless signal from the energy meter's Bluetooth and sends a repeat data request, so that the Bluetooth of the energy meter to be tested sends the test data to the energy meter testing device multiple times.

[0021] Step 6: The communication module receives the test data sent by the energy meter under test and confirms that the data is complete. At this time, the sub-control unit packages the test data uploaded by each communication module and sends it to the main control unit. The main control unit compares the received data with the standard parameters to verify the energy meter under test and transmits the verification results to the human-machine interaction unit for display.

[0022] Preferably, in step 3, the sub-control unit allocates frequency bands to the communication module, which further includes: the sub-control unit generates a unique identification segment code for the corresponding position and allocates a frequency band to the communication module corresponding to the position, and the allocated frequency bands are not repeated.

[0023] Preferably, step 3 further includes: the sub-control unit records the number of energy meters to be tested, and controls the operating condition unit to power on the connected energy meters, connects the communication module to the energy meter via Bluetooth and obtains the Bluetooth address of the energy meter to be tested.

[0024] Preferably, step 6 further includes: when the communication module receives at least two sets of detection data that are completely identical, it confirms that the data is complete and obtains one set of verification data. At this time, the energy meter to be verified can stop sending detection data.

[0025] The communication module outputs the data to the sub-control unit, which stores it according to the unique identification segment code. After all the communication units under it send the verification data once, the data is packaged together and sent to the main control unit. The data in the data packet includes: unique identification segment code, table address, and verification data once.

[0026] The main control unit performs verification by comparing the received data with standard parameters, and then transmits the data and verification results to the human-machine interface unit for display.

[0027] The present invention also provides a terminal, including a processor and a storage medium;

[0028] The storage medium is used to store instructions;

[0029] The processor is used to operate according to the instructions to execute the steps of the Bluetooth-based energy meter verification method.

[0030] The present invention also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the Bluetooth-based energy meter verification method.

[0031] The beneficial effects of this invention are as follows: Compared with the prior art, when the main control module receives the pre-inspection command, it allocates different frequency band ranges to each sub-control unit. Then, the sub-control unit allocates different frequency bands to each communication module. The communication module then uses the allocated frequency band and the energy meter Bluetooth protocol for frequency hopping. After the frequency hopping is completed, it reconnects. In this way, each pair of Bluetooth connections uses a different frequency band, which effectively avoids co-channel interference. Moreover, during the communication process, the communication module also sends duplicate data requests to the energy meter Bluetooth. When at least two sets of received data are completely identical, it confirms that a verification is completed, and then sends the data to the sub-control unit to prevent data loss during wireless transmission. By adopting the main control-sub-control method, the pressure of data processing is reduced, the speed of data processing is increased, and thus the verification efficiency is improved. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of the energy meter calibration device based on Bluetooth communication in this invention;

[0033] Figure 2 This is a flowchart illustrating the energy meter verification method based on Bluetooth communication in this invention. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this invention. The embodiments described in this application are merely some embodiments of this invention, and not all embodiments. Based on the spirit of this invention, other embodiments obtained by those skilled in the art without creative effort are all within the protection scope of this invention.

[0035] like Figure 1 As shown, the present invention provides a power meter calibration device based on Bluetooth communication, including a human-machine interaction unit, a main control unit, a sub-control unit, an operating condition unit, and a meter position unit;

[0036] The human-machine interaction unit is connected to the main control unit, the main control unit is connected to the sub-control unit, and the sub-control unit is connected to the working condition unit and the position unit respectively. All of the above connections are wired connections and use serial communication to ensure the stability and integrity of data transmission.

[0037] The meter unit also includes a communication module and a barcode scanning module. The communication module establishes a one-to-one connection with the Bluetooth on the power meter via Bluetooth, meaning that one communication module corresponds to one power meter to be tested. The barcode scanning module is used to identify the barcode on the power meter, and each barcode scanning module corresponds to scanning one power meter to be tested.

[0038] The communication module adopts a Bluetooth communication module, and the Bluetooth communication protocol used in the communication module of this invention can be Bluetooth 5.0, which is backward compatible;

[0039] Furthermore, each meter unit is equipped with a communication module and a barcode scanning module. The total number of communication modules in the Bluetooth-based energy meter verification device of the present invention can be 2 to 40, and the number of barcode scanning modules is the same as the number of communication modules.

[0040] Specifically, the Bluetooth operating frequency band is usually in the range of 2.4G to 2.48G. The entire operating frequency band is divided into 40 channels in 2M increments. To prevent interference between Bluetooth devices on the same frequency, frequency hopping is performed during Bluetooth communication in this invention. The communication module of the energy meter verification device and the Bluetooth communication module of the energy meter to be verified are used as a pair of Bluetooth devices. The pair of Bluetooth devices share one channel. Therefore, the energy meter verification device of this invention can be equipped with up to 40 communication modules.

[0041] Furthermore, the inspector can issue pre-inspection instructions to the main control unit through the human-machine interaction unit. The human-machine interaction unit can be a computer, touch screen, etc., and there is one human-machine interaction unit and one main control unit in the electricity meter calibration device.

[0042] The number of sub-control units depends on the number of communication modules. Each sub-control unit can connect to 2 to 10 communication modules, with a minimum of two communication modules. If a total of 40 communication modules are set up, and each sub-control unit connects to 10 communication modules, then at least 4 sub-control units are required.

[0043] When the main control module receives the pre-detection command, it allocates different frequency band ranges to each sub-control unit, which then allocates different frequency bands to each communication module. Specifically, the frequency band allocation standard is as follows: within the 2.4G to 2.48G frequency band range, frequency bands are allocated in 2M increments.

[0044] The communication module uses the allocated frequency band and the energy meter's Bluetooth protocol for frequency hopping. After the frequency hopping is completed, it reconnects, so that each Bluetooth connection uses a different frequency band.

[0045] During communication, the communication module of the electricity meter verification device will send repeated data requests via Bluetooth to the electricity meter to be verified. This means the electricity meter repeatedly sends the same test data to the verification device. The verification device confirms completion of one verification cycle only when at least two sets of identical data are received. Then, it sends the data returned by the electricity meter to the sub-control unit to prevent data loss during wireless transmission.

[0046] The number of operating condition units is determined by the number of sub-control units. In this invention, the number of operating condition units is the same as the number of sub-control units. The sub-control units can control the operating condition units to provide the various voltages and currents required for the calibration of the energy meter under test. One operating condition unit includes multiple output terminals. The operating condition unit is connected to the sub-control unit, and the sub-control unit is connected to several communication modules. Therefore, the number of output terminals of the operating condition unit is the same as the number of communication modules under the sub-control unit. The operating condition unit corresponding to the sub-control unit can provide current and voltage to the meter position units under the sub-control unit respectively.

[0047] like Figure 2 As shown, the present invention also provides a method for verifying electricity meters based on Bluetooth communication. The aforementioned device for verifying electricity meters based on Bluetooth communication can verify electricity meters using this method. The method specifically includes the following steps:

[0048] Step 1: The inspector issues a pre-inspection command to the main control unit through the human-machine interaction unit. After receiving the pre-inspection command, the main control unit allocates frequency band ranges to each sub-control unit, and the frequency bands of each sub-control unit are not repeated.

[0049] Step 2: Scan the identification barcode of the energy meter to be tested using the barcode scanning module, and connect the energy meter to the corresponding meter unit;

[0050] Specifically, each electricity meter has a unique identification barcode, and each scanning module can only scan one electricity meter to be tested. After scanning by the scanning module, the electricity meter can be connected to the meter unit where the scanning module is located.

[0051] Step 3: The sub-control unit allocates a frequency band to the communication module and controls the operating condition unit to power on the connected energy meters, connect the communication module to the energy meter via Bluetooth and obtain the Bluetooth address of the energy meter to be tested.

[0052] The process of the sub-control unit allocating frequency bands for the communication module also includes: the sub-control unit generating a unique identification segment code for the corresponding position and allocating a frequency band for the communication module corresponding to that position, and the allocated frequency bands are not repeated.

[0053] Furthermore, the sub-control unit records the number of energy meters to be tested, and controls the working condition unit to power on the connected energy meters, connects the communication module to the energy meter via Bluetooth, and obtains the Bluetooth address of the energy meter to be tested.

[0054] Preferably, when the communication module connects to the energy meter via Bluetooth, it uses a standard frequency band, which is 2.4G.

[0055] Step 4: The communication module performs frequency hopping with the energy meter under test via Bluetooth protocol, hopping to the assigned frequency band. After receiving a positive response from the energy meter under test via Bluetooth, it performs frequency hopping again and then reconnects. At this time, the communication module and the energy meter under test communicate within the agreed frequency.

[0056] Specifically, both the electricity meter testing device and the electricity meter to be tested follow the Bluetooth protocol, such as Bluetooth 4.0 or Bluetooth 5.0. Through the Bluetooth protocol, the communication module of the electricity meter testing device can agree on the frequency band to be used with the electricity meter to be tested and send the agreed frequency band data to the electricity meter to be tested.

[0057] After receiving the frequency band data, the meter to be tested returns a response data to the meter testing device. A positive response means that the meter to be tested also accepts frequency hopping. After the communication module receives the response data and confirms that it is a positive response, it also performs frequency hopping and waits for a Bluetooth connection with the meter to be tested.

[0058] Furthermore, the verification of the electricity meters has not yet begun at this point. The verifier can continue to operate and repeat steps 1 to 6 to connect other electricity meters to be verified. The communication connection of the newly connected meter positions repeats the above actions, so that the electricity meter verification device can connect to multiple electricity meters to be verified at the same time.

[0059] Step 5: After the inspector issues the test command through the human-machine interaction unit, the sub-control unit controls the working condition unit to provide the current and voltage working conditions required for the test. The communication module receives the wireless signal from the energy meter's Bluetooth and sends a repeat data request, so that the Bluetooth of the energy meter to be tested sends the test data to the energy meter testing device multiple times.

[0060] After connecting all the electricity meters to be tested, the meter inspector can issue test instructions through the human-machine interface unit. After receiving the test instructions, the main control unit transmits the instructions to the sub-control unit. After the sub-control unit confirms that all its communication modules have completed frequency hopping connection, the sub-control unit controls the corresponding operating condition unit to provide the current and voltage operating conditions required for meter testing. The communication module receives the wireless signal from the electricity meter's Bluetooth and sends a repeat data request, allowing the electricity meter's Bluetooth to send the test data multiple times.

[0061] Step 6: The communication module receives the test data sent by the energy meter under test and confirms that the data is complete. At this time, the sub-control unit packages the test data uploaded by each communication module and sends it to the main control unit. The main control unit compares the received data with the standard parameters to verify the energy meter under test and transmits the verification results to the human-machine interaction unit for display.

[0062] Specifically, when the communication module receives at least two sets of identical test data, it confirms the data is complete and obtains one set of verification data. At this point, the energy meter to be verified can stop sending test data.

[0063] The communication module outputs this data to the sub-control unit, which stores it according to the unique identification segment code. After all the communication units below it have sent their verification data, the data is packaged together and sent to the main control unit. The data packet includes: the unique identification segment code, the table address, and the verification data. The main control unit performs verification by comparing the received data with standard parameters and transmits the data and verification results to the human-machine interface unit for display.

[0064] The beneficial effects of this invention are as follows: Compared with the prior art, when the main control module receives the pre-inspection command, it allocates different frequency band ranges to each sub-control unit. Then, the sub-control unit allocates different frequency bands to each communication module. The communication module then uses the allocated frequency band and the energy meter Bluetooth protocol for frequency hopping. After the frequency hopping is completed, it reconnects. In this way, each pair of Bluetooth connections uses a different frequency band, which effectively avoids co-channel interference. Moreover, during the communication process, the communication module also sends duplicate data requests to the energy meter Bluetooth. When at least two sets of received data are completely identical, it confirms that a verification is completed, and then sends the data to the sub-control unit to prevent data loss during wireless transmission. By adopting the main control-sub-control method, the pressure of data processing is reduced, the speed of data processing is increased, and thus the verification efficiency is improved.

[0065] This disclosure can be a system, method, and / or computer program product. A computer program product may include a computer-readable storage medium having computer-readable program instructions loaded thereon for causing a processor to implement various aspects of this disclosure.

[0066] Computer-readable storage media can be tangible devices capable of holding and storing instructions for use by an instruction execution device. Computer-readable storage media can be, for example—but not limited to—electrical storage devices, magnetic storage devices, optical storage devices, electromagnetic storage devices, semiconductor storage devices, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of computer-readable storage media include: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), portable compact disc read-only memory (CD-ROM), digital multifunction disc (DVD), memory sticks, floppy disks, mechanical encoding devices, such as punch cards or recessed protrusions storing instructions thereon, and any suitable combination of the foregoing. The computer-readable storage media used herein are not to be construed as transient signals themselves, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., light pulses through fiber optic cables), or electrical signals transmitted through wires.

[0067] The computer-readable program instructions described herein can be downloaded from computer-readable storage media to various computing / processing devices, or downloaded via a network, such as the Internet, local area network, wide area network, and / or wireless network, to an external computer or external storage device. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers, and / or edge servers. A network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards them to the computer-readable storage media in the respective computing / processing device.

[0068] Computer program instructions used to perform the operations of this disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Smalltalk, C++, etc., and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or may be connected to an external computer (e.g., via the Internet using an Internet service provider). In some embodiments, electronic circuitry, such as programmable logic circuitry, field-programmable gate arrays (FPGAs), or programmable logic arrays (PLAs), is personalized by utilizing the status information of the computer-readable program instructions to implement various aspects of this disclosure.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.

Claims

1. A power meter calibration device based on Bluetooth communication, characterized in that, include: The human-machine interaction unit includes a main control unit, a sub-control unit, a working condition unit, and a table unit. The table unit also includes a communication module and a barcode scanning module. The human-machine interaction unit is connected to the main control unit. The human-machine interaction unit sends pre-inspection instructions to the main control unit. The main control unit is connected to the sub-control units. Each sub-control unit is connected to a working condition unit and several meter position units. The sub-control unit controls the working condition unit to provide the voltage and current required for the verification of the energy meter to be verified. When the main control module receives the pre-detection command, it allocates different frequency band ranges to each sub-control unit, and then the sub-control unit allocates different frequency bands to each communication module. The communication module performs frequency hopping with the energy meter under test via Bluetooth protocol, hopping to the assigned frequency band. After receiving a positive response from the energy meter under test via Bluetooth, it performs frequency hopping again and then reconnects. At this time, the communication module and the energy meter under test communicate within the agreed frequency. Each communication module establishes a one-to-one connection with the energy meter to be tested, and the barcode scanning module is used to identify the barcode on the energy meter.

2. The energy meter calibration device based on Bluetooth communication according to claim 1, characterized in that, Each unit is equipped with one communication module and one barcode scanning module, and the device has at least two communication modules and the same number of barcode scanning modules as communication modules.

3. The energy meter calibration device based on Bluetooth communication according to claim 1, characterized in that, The communication module uses a Bluetooth communication module, and the Bluetooth communication protocol uses Bluetooth 5.

0.

4. The energy meter calibration device based on Bluetooth communication according to claim 1, characterized in that, The number of sub-control units is set according to the number of communication modules of the table unit connected to them, and each sub-control unit can connect to 2 to 10 communication modules.

5. The energy meter calibration device based on Bluetooth communication according to claim 1, characterized in that, The frequency band allocation standard is as follows: within the 2.4G to 2.48G frequency band range, frequency bands are allocated in 2M increments.

6. The energy meter calibration device based on Bluetooth communication according to claim 1, characterized in that, The operating condition unit corresponding to the sub-control unit can provide current and voltage to the meter unit under the sub-control unit respectively. Each operating condition unit includes several output terminals, and the operating condition unit is connected to the sub-control unit. The sub-control unit is connected to several communication modules. Therefore, the number of output terminals of the operating condition unit is the same as the number of communication modules under the sub-control unit.

7. A method for verifying an energy meter based on Bluetooth communication, using the energy meter verification device based on Bluetooth communication as described in any one of claims 1-6, characterized in that, Includes the following steps: Step 1: The inspector issues a pre-inspection command to the main control unit through the human-machine interaction unit. After receiving the pre-inspection command, the main control unit allocates frequency band ranges to each sub-control unit, and the frequency bands of each sub-control unit are not repeated. Step 2: Scan the identification barcode of the energy meter to be tested using the barcode scanning module, and connect the energy meter to the corresponding meter unit; Step 3: The sub-control unit allocates a frequency band to the communication module and controls the operating condition unit to power on the connected energy meters, connect the communication module to the energy meter via Bluetooth and obtain the Bluetooth address of the energy meter to be tested. Step 4: The communication module performs frequency hopping with the energy meter under test via Bluetooth protocol, hopping to the assigned frequency band. After receiving a positive response from the energy meter under test via Bluetooth, it performs frequency hopping again and then reconnects. At this time, the communication module and the energy meter under test communicate within the agreed frequency. Step 5: After the inspector issues the test command through the human-machine interaction unit, the sub-control unit controls the working condition unit to provide the current and voltage working conditions required for the test. The communication module receives the wireless signal from the energy meter's Bluetooth and sends a repeat data request, so that the Bluetooth of the energy meter to be tested sends the test data to the energy meter testing device multiple times. Step 6: The communication module receives the test data sent by the energy meter under test and confirms that the data is complete. At this time, the sub-control unit packages the test data uploaded by each communication module and sends it to the main control unit. The main control unit compares the received data with the standard parameters to verify the energy meter under test and transmits the verification results to the human-machine interaction unit for display.

8. The method for verifying an energy meter based on Bluetooth communication according to claim 7, characterized in that, In step 3, the sub-control unit allocates frequency bands to the communication module, which further includes: the sub-control unit generates a unique identification segment code for the corresponding table position, and allocates a frequency band for the communication module corresponding to the table position, and the allocated frequency bands are not repeated.

9. The method for verifying an energy meter based on Bluetooth communication according to claim 7, characterized in that, Step 3 further includes: the sub-control unit records the number of energy meters to be tested, and controls the working condition unit to power on the connected energy meters, connects the communication module to the energy meter via Bluetooth and obtains the Bluetooth address of the energy meter to be tested.

10. The method for verifying an energy meter based on Bluetooth communication according to claim 7, characterized in that, Step 6 further includes: when the communication module receives at least two sets of detection data that are completely identical, it confirms that the data is complete and obtains one set of verification data. At this time, the energy meter to be verified can stop sending detection data. The communication module outputs the data to the sub-control unit, which stores it according to the unique identification segment code. After all the communication units under it send the verification data once, the data is packaged together and sent to the main control unit. The data in the data packet includes: unique identification segment code, table address, and verification data once. The main control unit performs verification by comparing the received data with standard parameters, and then transmits the data and verification results to the human-machine interface unit for display.

11. A terminal, comprising a processor and a storage medium; characterized in that: The storage medium is used to store instructions; The processor is configured to operate according to the instructions to perform the steps of the method according to any one of claims 7-10.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the program implements the steps of the method according to any one of claims 7-10.

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