Electric parameter remote comparison device and method based on air-space time frequency comparison

Abstract

The invention relates to the technical field of electromagnetic metering, in particular to an electric parameter remote comparison device and method based on air and space time frequency comparison, and the method comprises the steps: converting an electric parameter signal to be compared into a first frequency signal and a second frequency signal at a preset first place and a preset second place respectively; performing remote comparison on the first frequency signal and the second frequency signal by adopting an air-space time frequency comparison technology so as to obtain time frequency comparison measurement data; and a preset electric parameter-frequency conversion relation model is utilized to reversely deduce time-frequency comparison measurement data so as to obtain comparison measurement data of the electric parameter signals of the two different places. Therefore, the problems of large comparison result deviation and the like caused by the fact that transmission of an existing traditional electric parameter physical standard device is physically limited and a quantum benchmark cannot be established are solved.

Description

Technical Field

[0001] This invention relates to the field of electromagnetic metrology, and in particular to a device and method for remote comparison of electrical parameters based on space-time-frequency comparison. Background Technology

[0002] In the field of electrical engineering metrology standard transfer, the comparison of electrical parameters (such as voltage, current, and power) is crucial to ensuring the consistency of electrical equipment performance and traceability of measurement values. Traditional methods of comparison involve transporting high-precision standard sources from different locations, such as standard batteries, standard resistors, and Zener diodes, to the same location for direct or indirect comparative measurements to achieve the comparison of standard electrical parameter values. However, transporting standard equipment incurs significant manpower, time, and logistics costs, and cannot meet real-time requirements; for example, cross-regional voltage benchmark comparisons typically take several weeks to complete. Similarly, standards used for physical comparison are susceptible to interference from temperature changes and vibrations during transportation, which may cause performance drift and lead to significant deviations in the comparison results.

[0003] The emerging quantum metrology standards can theoretically solve a series of problems associated with transporting traditional physical standards. This is because the unit electrical parameters reproduced by quantum standards through quantum effects (such as the Josephson effect and the quantized Hall effect) are absolute, without requiring bottom-up tracing. However, the operation of quantum standards requires a rigorous experimental environment and complex system equipment, making them difficult to deploy in industrial settings and inconvenient for long-distance transportation. Therefore, in situations where quantum standards cannot be established, the challenge of remote comparison of electrical parameters remains. Summary of the Invention

[0004] This invention provides a remote electrical parameter comparison device and method based on space-time frequency comparison, to solve the problems of large deviations in comparison results caused by the physical limitations of existing traditional physical electrical parameter standards that prevent the establishment of quantum benchmarks.

[0005] A first aspect of the present invention provides a remote electrical parameter comparison device based on space-time frequency comparison, comprising: an electrical parameter-frequency conversion module for converting electrical parameter signals to be compared into first frequency signals and second frequency signals at a preset first location and a preset second location, respectively; a space-time communication-based time-frequency measurement module for remotely comparing the first frequency signal and the second frequency signal using space-time frequency comparison technology to obtain time-frequency comparison measurement data; and a data processing module for back-calculating the time-frequency comparison measurement data using a preset electrical parameter-frequency conversion relationship model to obtain comparison measurement data of electrical parameter signals at two different locations.

[0006] Optionally, the electrical parameter signal to be compared includes at least one of voltage, current, or power.

[0007] Optionally, the time and frequency measurement module based on space-air communication includes:

[0008] The tracking unit is used to measure the transmission time of the CNSS signal from the Global Navigation Satellite System to the preset first location and the preset second location, or to measure the phase of the CNSS signal arriving at the preset first location and the preset second location relative to the carrier phase generated by the preset first location and the preset second location; the acquisition unit is used to receive the navigation message from the Global Navigation Satellite System; and the parsing unit is used to remotely compare the first frequency signal and the second frequency signal using the transmission time, the measurement value, and the navigation message based on the GNSS time-frequency transfer method to obtain time-frequency comparison measurement data.

[0009] Optionally, the specific expression of the preset electrical parameter-frequency conversion relationship model is as follows:

[0010] f = F(V,I,P) + f0

[0011] Where f is the output frequency, F(V,I,P) is a nonlinear or linear function characterizing the relationship between the input electrical parameters and the output frequency, V is the voltage, I is the current, P is the power, and f0 is the reference frequency offset.

[0012] A second aspect of the present invention provides a method for remote comparison of electrical parameters based on space-time frequency comparison, comprising: converting electrical parameter signals to be compared into first frequency signals and second frequency signals at a preset first location and a preset second location, respectively; performing remote comparison of the first frequency signals and the second frequency signals using space-time frequency comparison technology to obtain time-frequency comparison measurement data; and using a preset electrical parameter-frequency conversion relationship model to back-calculate the time-frequency comparison measurement data to obtain comparison measurement data of electrical parameter signals at two different locations.

[0013] Optionally, the electrical parameter signal to be compared includes at least one of voltage, current, or power.

[0014] Optionally, the step of remotely comparing the first frequency signal and the second frequency signal using space-time frequency comparison technology to obtain time-frequency comparison measurement data includes:

[0015] The method measures the transmission time of CNSS signals from the Global Navigation Satellite System to the preset first location and the preset second location, or the phase of the CNSS signals arriving at the preset first location and the preset second location relative to the carrier phase generated by the preset first location and the preset second location; receives navigation messages from the Global Navigation Satellite System; and, based on the GNSS time-frequency transfer method, remotely compares the first frequency signal and the second frequency signal using the transmission time, the measured values, and the navigation messages to obtain time-frequency comparison measurement data.

[0016] Optionally, the specific expression of the preset electrical parameter-frequency conversion relationship model is as follows:

[0017] f = F(V,I,P) + f0

[0018] Where f is the output frequency, F(V,I,P) is a nonlinear or linear function characterizing the relationship between the input electrical parameters and the output frequency, V is the voltage, I is the current, P is the power, and f0 is the reference frequency offset.

[0019] A third aspect of the present invention provides an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the remote comparison method of electrical parameters based on space-time-frequency comparison as described in the above embodiments.

[0020] A fourth aspect of the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method for remote comparison of electrical parameters based on space-time-frequency comparison.

[0021] The remote electrical parameter comparison device and method based on space-time frequency comparison proposed in this invention utilizes the high precision and distance-independent characteristics of space-time frequency comparison technology to achieve remote, high-reliability comparison of electrical parameters. It can overcome the physical limitations of traditional physical standard instrument transmission of electrical parameters, significantly reduce the cost of cross-regional value transmission, and provide key technical support for the establishment of a distributed electrical reference network. It aims to promote the development of electrical measurement technology towards a more accurate, efficient, and convenient direction.

[0022] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0024] Figure 1 A block diagram of a remote electrical parameter comparison device based on space-time frequency comparison provided in an embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram illustrating the execution of a remote electrical parameter comparison device based on space-time frequency comparison, as provided in an embodiment of the present invention.

[0026] Figure 3 A flowchart of a remote electrical parameter comparison method based on space-time frequency comparison provided in an embodiment of the present invention;

[0027] Figure 4 This is a block diagram of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0029] The following description, with reference to the accompanying drawings, describes a remote electrical parameter comparison device and method based on space-time-frequency comparison according to embodiments of the present invention.

[0030] Figure 1 This is a block diagram of a remote electrical parameter comparison device based on space-time-frequency comparison, provided in an embodiment of the present invention.

[0031] like Figure 1 As shown, the remote electrical parameter comparison device 10 based on space-time frequency comparison includes: an electrical parameter-frequency conversion module 101, a time and frequency measurement module 102 based on space-time communication, and a data processing module 103.

[0032] The electrical parameter-frequency conversion module 101 converts the electrical parameter signal to be compared into a first frequency signal and a second frequency signal at a preset first location and a preset second location, respectively. The time-frequency measurement module 102 based on space-air communication performs remote comparison of the first and second frequency signals using space-air time-frequency comparison technology to obtain time-frequency comparison measurement data. The data processing module 103 uses a preset electrical parameter-frequency conversion relationship model to back-calculate the time-frequency comparison measurement data, thereby obtaining comparison measurement data of the electrical parameter signals at two different locations.

[0033] In some embodiments, the electrical parameter-frequency conversion module 101 is respectively set at a preset first location and a preset second location, and converts the electrical parameter signals to be compared at each location into a first frequency signal and a second frequency signal, respectively. The electrical parameter signals to be compared include at least one of voltage, current, or power.

[0034] Furthermore, such as Figure 2 As shown, the electrical parameter-frequency conversion module 101 may include converters such as voltage-frequency converters, current-frequency converters, and power-frequency converters. Its output frequency has a linear relationship with the input electrical parameters, or it can obtain an accurate conversion model between the output frequency and the input electrical parameters. This linear relationship or conversion model can convert the electrical parameter signals to be compared (V1 and V2; I1 and I2; P1 and P2) into corresponding first frequency signals f1 and second frequency signals f2 at preset first locations and preset second locations, respectively.

[0035] In some embodiments, the time and frequency measurement module 102 based on space-air communication includes:

[0036] The tracking unit is used to measure the transmission time of the CNSS signal from the Global Navigation Satellite System to the preset first location and the preset second location, or the measured value of the phase of the CNSS signal arriving at the preset first location and the preset second location relative to the carrier phase generated at the preset first location and the preset second location;

[0037] The acquisition unit is used to receive navigation messages from the Global Navigation Satellite System;

[0038] The analysis unit is used to remotely compare the first frequency signal and the second frequency signal based on the GNSS time and frequency transmission method, using transmission time, measurement value and navigation message, to obtain time and frequency comparison measurement data.

[0039] Specifically, the tracking unit measures the transmission time of the GNSS signal from the satellite to the module antenna, multiplies it by the speed of light to obtain the distance, or measures the phase of the GNSS signal arriving at the module relative to the carrier phase generated by the module. The acquisition unit receives the navigation message broadcast by the satellite, which includes information such as the satellite's own time and position, and ionospheric delay correction parameters. The parsing unit, based on the mathematical model of the GNSS time-frequency transmission method, uses the transmission time, measurement value, and navigation message to parse the first frequency signal and the second frequency signal, obtains time-frequency comparison measurement data, realizes high-precision comparison between the first frequency signal and the second frequency signal, and sends the time-frequency comparison measurement data to the data processing module 103 in real time.

[0040] It should be noted that GNSS time and frequency transfer methods have been maturely applied in the field of time and frequency transfer, such as BeiDou / GPS satellite code-based time and frequency transfer and carrier phase-based time and frequency transfer. The measurement uncertainty of frequency comparison can reach 10 in Type A assessment. -15 The magnitude is not limited by geographical distance and has an inherent connection with quantum benchmarks. The essence of quantum benchmarks such as the Josephson effect is frequency-to-voltage conversion, which has a natural compatibility with GNSS time-frequency transfer methods. If it can be combined with electrical parameter conversion technology, the accuracy and reliability of remote comparison of electrical metrology benchmarks can be significantly improved.

[0041] In some embodiments, the data processing module 103 receives high-precision time-frequency comparison measurement data between a preset first location and a preset second location, which are measured in real time by the time-frequency measurement module 102 based on space-air communication. The module then uses a preset electrical parameter-frequency conversion model to convert the frequency comparison measurement data into electrical parameter comparison measurement data. Finally, the module can combine the measurement uncertainty of the comparison results with the environmental noise model to perform error compensation on the comparison measurement data, thereby realizing remote comparison of electrical parameters in different locations.

[0042] The specific expression for the preset electrical parameter-frequency conversion relationship model is as follows:

[0043] f = F(V,I,P) + f0

[0044] In the formula, f is the output frequency, F(V,I,P) is a nonlinear or linear function characterizing the relationship between the input electrical parameters and the output frequency, V is the voltage, I is the current, P is the power, and f0 is the reference frequency offset.

[0045] The remote electrical parameter comparison device based on space-time-frequency comparison proposed in this invention overcomes the inherent limitations of traditional physical and quantum references in remote comparison by integrating GNSS time-frequency transfer methods, electrical parameter-frequency conversion models, and the physical characteristics of quantum references. The establishment of this technical path not only provides a disruptive solution for remote electrical parameter comparison, but also provides key technical support for the "quantization" and "globalization" evolution of the international metrology system, aiming to promote the development of electrical measurement technology towards a more accurate, efficient, and convenient direction.

[0046] Next, referring to the accompanying drawings, a remote comparison method for electrical parameters based on space-time-frequency comparison according to an embodiment of the present invention is described.

[0047] Figure 3 This is a flowchart illustrating a remote comparison method for electrical parameters based on space-time frequency comparison, provided in an embodiment of the present invention.

[0048] like Figure 3As shown, the remote comparison method for electrical parameters based on space-time frequency comparison includes the following steps:

[0049] In step S301, the electrical parameter signals to be compared are converted into first frequency signals and second frequency signals at preset first locations and preset second locations, respectively.

[0050] The electrical parameter signals to be compared include at least one of voltage, current, or power.

[0051] In step S302, the first frequency signal and the second frequency signal are remotely compared using space-time frequency comparison technology to obtain time-frequency comparison measurement data.

[0052] In some embodiments, space-time frequency comparison technology is used to remotely compare a first frequency signal and a second frequency signal to obtain time-frequency comparison measurement data, including:

[0053] The measurement measures the transmission time of CNSS signals from the Global Navigation Satellite System to preset first and second locations, or the phase of the CNSS signals arriving at the preset first and second locations relative to the carrier phase generated at the preset first and second locations;

[0054] Receive navigation messages from the Global Navigation Satellite System;

[0055] Based on the GNSS time and frequency transmission method, the first frequency signal and the second frequency signal are remotely compared using transmission time, measurement value and navigation message to obtain time and frequency comparison measurement data.

[0056] In step S303, the time-frequency comparison measurement data is back-calculated using a preset electrical parameter-frequency conversion relationship model to obtain comparison measurement data of electrical parameter signals at two different locations.

[0057] In some embodiments, the specific expression of the preset electrical parameter-frequency conversion relationship model is as follows:

[0058] f = F(V,I,P) + f0

[0059] Where f is the output frequency, F(V,I,P) is a nonlinear or linear function characterizing the relationship between the input electrical parameters and the output frequency, V is the voltage, I is the current, P is the power, and f0 is the reference frequency offset.

[0060] It should be noted that the foregoing explanation of the embodiment of the remote electrical parameter comparison device based on space-time frequency comparison also applies to the remote electrical parameter comparison method based on space-time frequency comparison in this embodiment, and will not be repeated here.

[0061] The remote comparison method for electrical parameters based on space-time-frequency comparison proposed in this invention overcomes the inherent limitations of traditional physical and quantum references in remote comparison by integrating GNSS time-frequency transfer methods, electrical parameter-frequency conversion models, and the physical characteristics of quantum references. The establishment of this technical path not only provides a disruptive solution for remote comparison of electrical parameters, but also provides key technical support for the "quantization" and "globalization" evolution of the international metrology system, aiming to promote the development of electrical measurement technology towards a more accurate, efficient, and convenient direction.

[0062] Figure 4 This is a schematic diagram of an electronic device provided in an embodiment of the present invention. The electronic device may include:

[0063] The memory 401, the processor 402, and the computer program stored on the memory 401 and capable of running on the processor 402.

[0064] When the processor 402 executes the program, it implements the remote comparison method of electrical parameters based on space-time-frequency comparison provided in the above embodiments.

[0065] Furthermore, electronic devices also include:

[0066] Communication interface 403 is used for communication between memory 401 and processor 402.

[0067] The memory 401 is used to store computer programs that can run on the processor 402.

[0068] The memory 401 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.

[0069] If the memory 401, processor 402, and communication interface 403 are implemented independently, then the communication interface 403, memory 401, and processor 402 can be interconnected via a bus to complete communication between them. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be divided into address buses, data buses, control buses, etc. For ease of representation, Figure 4 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0070] Optionally, in a specific implementation, if the memory 401, processor 402, and communication interface 403 are integrated on a single chip, then the memory 401, processor 402, and communication interface 403 can communicate with each other through an internal interface.

[0071] Processor 402 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present invention.

[0072] This invention also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method for remote comparison of electrical parameters based on space-time-frequency comparison.

[0073] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0074] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0075] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or N executable instructions for implementing custom logic functions or processes, and the scope of preferred embodiments of the invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as will be understood by those skilled in the art to which embodiments of the invention pertain.

[0076] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0077] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0078] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0079] Furthermore, the functional units in the various embodiments of the present invention can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0080] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A remote electrical parameter comparison device based on space-time frequency comparison, characterized in that, include: The electrical parameter-frequency conversion module is used to convert the electrical parameter signal to be compared into a first frequency signal and a second frequency signal at a preset first location and a preset second location, respectively. The time and frequency measurement module based on space-air communication is used to remotely compare the first frequency signal and the second frequency signal using space-air time and frequency comparison technology to obtain time and frequency comparison measurement data. The data processing module is used to back-calculate the time-frequency comparison measurement data using a preset electrical parameter-frequency conversion relationship model, so as to obtain the comparison measurement data of electrical parameter signals at two different locations.

2. The remote electrical parameter comparison device based on space-time frequency comparison according to claim 1, characterized in that, The electrical parameter signals to be compared include at least one of voltage, current, or power.

3. The remote electrical parameter comparison device based on space-time frequency comparison according to claim 1, characterized in that, The time and frequency measurement module based on space-air communication includes: The tracking unit is used to measure the transmission time of the CNSS signal from the Global Navigation Satellite System to the preset first location and the preset second location, or to measure the phase of the CNSS signal arriving at the preset first location and the preset second location relative to the carrier phase generated by the preset first location and the preset second location; Acquisition unit, used to receive navigation messages from the global navigation satellite system; The analysis unit is used to remotely compare the first frequency signal and the second frequency signal based on the GNSS time and frequency transmission method, using the transmission time, the measurement value and the navigation message, to obtain time and frequency comparison measurement data.

4. The remote electrical parameter comparison device based on space-time frequency comparison according to claim 1, characterized in that, The specific expression of the preset electrical parameter-frequency conversion relationship model is as follows: f = F(V,I,P) + f0 Where f is the output frequency, F(V,I,P) is a nonlinear or linear function characterizing the relationship between the input electrical parameters and the output frequency, V is the voltage, I is the current, P is the power, and f0 is the reference frequency offset.

5. A method for remote comparison of electrical parameters based on space-time-frequency comparison, characterized in that, Includes the following steps: At a first preset location and a second preset location, the electrical parameter signal to be compared is converted into a first frequency signal and a second frequency signal, respectively. Space-time frequency comparison technology is used to remotely compare the first frequency signal and the second frequency signal to obtain time-frequency comparison measurement data. The time-frequency comparison measurement data is back-derived using a preset electrical parameter-frequency conversion relationship model to obtain comparison measurement data of electrical parameter signals at two different locations.

6. The method for remote comparison of electrical parameters based on space-time frequency comparison according to claim 5, characterized in that, The electrical parameter signals to be compared include at least one of voltage, current, or power.

7. The method for remote comparison of electrical parameters based on space-time frequency comparison according to claim 5, characterized in that, The method of using space-time frequency comparison technology to remotely compare the first frequency signal and the second frequency signal to obtain time-frequency comparison measurement data includes: The measurement measures the transmission time of CNSS signals from the Global Navigation Satellite System to the preset first location and the preset second location, or the phase of the CNSS signals arriving at the preset first location and the preset second location relative to the carrier phase generated at the preset first location and the preset second location; Receive navigation messages from the global navigation satellite system; Based on the GNSS time and frequency transmission method, the first frequency signal and the second frequency signal are remotely compared using the transmission time, the measured value, and the navigation message to obtain time and frequency comparison measurement data.

8. The method for remote comparison of electrical parameters based on space-time frequency comparison according to claim 5, characterized in that, The specific expression of the preset electrical parameter-frequency conversion relationship model is as follows: f = F(V,I,P) + f0 Where f is the output frequency, F(V,I,P) is a nonlinear or linear function characterizing the relationship between the input electrical parameters and the output frequency, V is the voltage, I is the current, P is the power, and f0 is the reference frequency offset.

9. An electronic device, characterized in that, include: The memory, the processor, and the computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the remote electrical parameter comparison method based on space-time-frequency comparison as described in any one of claims 5-8.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to implement the remote comparison method of electrical parameters based on space-time frequency comparison as described in any one of claims 5-8.

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