Current detection method and device, computer equipment, storage medium and program product

Abstract

The invention relates to a current detection method and device, computer equipment, a storage medium and a program product. The method comprises the following steps: acquiring a first current signal acquired by a first current detection circuit and a second current signal acquired by a second detection circuit in the closed-loop fluxgate current sensor; the detection precision of the first current detection circuit is smaller than that of the second current detection circuit; and determining a current detection signal output by the closed-loop fluxgate current sensor according to the first current signal and the second current signal. By adopting the method, high-precision current detection can be realized.

Description

Technical Field

[0001] The present application relates to the field of current detection technology, and in particular to a current detection method, device, computer equipment, storage medium and program product. Background Art

[0002] Closed-loop fluxgate current sensors are of great significance to the stable operation of power systems, precise control of industrial equipment, and effective use of new energy, and they have broad application prospects in many fields.

[0003] In the related art, when current detection is performed, current detection is mainly performed on the circuit to be detected by a closed-loop fluxgate current sensor to obtain a current detection signal of the circuit to be detected.

[0004] However, the related art method cannot achieve high-precision current detection. Summary of the invention

[0005] Based on this, it is necessary to provide a current detection method, device, computer equipment, storage medium and program product that can achieve high-precision current detection in response to the above technical problems.

[0006] In a first aspect, the present application provides a current detection method, which is applied to a processor in a closed-loop fluxgate current sensor, comprising:

[0007] Acquire a first current signal collected by a first current detection circuit and a second current signal collected by a second detection circuit in a closed-loop fluxgate current sensor; the detection accuracy of the first current detection circuit is less than the detection accuracy of the second current detection circuit;

[0008] A current detection signal output by the closed-loop fluxgate current sensor is determined according to the first current signal and the second current signal.

[0009] In one embodiment, determining a current detection signal output by a closed-loop fluxgate current sensor according to the first current signal and the second current signal includes:

[0010] The first current signal and the second current signal are analyzed by using a magnetic integrator provided in the processor to obtain a current detection signal output by a closed-loop fluxgate current sensor.

[0011] In one embodiment, a processor in a closed-loop fluxgate current sensor is used to analyze the first current signal and the second current signal to obtain a current detection signal output by the closed-loop fluxgate current sensor, including:

[0012] Using a magnetic integrator to perform integration processing on the first current signal and the second current signal respectively;

[0013] A current detection signal output by the closed-loop fluxgate current sensor is determined according to the first current signal and the second current signal after integration processing.

[0014] In one embodiment, determining the current detection signal output by the closed-loop fluxgate current sensor according to the first current signal and the second current signal after integration processing includes:

[0015] Adding the first current signal after integration processing and the second current signal after integration processing to obtain a fused current signal;

[0016] The fused current signal is used as a current detection signal output by a closed-loop fluxgate current sensor.

[0017] In one embodiment, the method further comprises:

[0018] Compare the current detection signals corresponding to the multiple current detection processes of the circuit to be detected with the reference current signal respectively;

[0019] Based on the comparison result, it is determined whether there is any abnormality in the circuit to be detected.

[0020] In one embodiment, judging whether the circuit to be detected has an abnormality according to the comparison result includes:

[0021] Acquire the number of current detection signals whose difference with the reference current signal is greater than a preset difference threshold;

[0022] When the number of current detection signals is greater than a preset number threshold, it is determined that an abnormality exists in the circuit to be detected.

[0023] In a second aspect, the present application also provides a current detection device, comprising:

[0024] An acquisition module, used to acquire a first current signal acquired by a first current detection circuit and a second current signal acquired by a second detection circuit in a closed-loop fluxgate current sensor; the detection accuracy of the first current detection circuit is less than the detection accuracy of the second current detection circuit;

[0025] The determination module is used to determine the current detection signal output by the closed-loop fluxgate current sensor according to the first current signal and the second current signal.

[0026] In a third aspect, the present application further provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the content of any one embodiment of the current detection method in the first aspect is implemented.

[0027] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the content of any one embodiment of the current detection method in the first aspect above is implemented.

[0028] In a fifth aspect, the present application further provides a computer program product, including a computer program, which, when executed by a processor, implements the content of any one embodiment of the current detection method in the first aspect above.

[0029] The above-mentioned current detection method, device, computer equipment, storage medium and program product obtain the first current signal collected by the first current detection circuit and the second current signal collected by the second detection circuit in the closed-loop fluxgate current sensor; the detection accuracy of the first current detection circuit is less than the detection accuracy of the second current detection circuit; according to the first current signal and the second current signal, the current detection signal output by the closed-loop fluxgate current sensor is determined. This method sets a second current detection circuit with higher detection accuracy in the closed-loop fluxgate current sensor, and the second current signal collected by the second detection circuit has higher accuracy. Then, based on the first current signal collected by the first detection circuit and the second current signal collected by the second detection circuit, a current detection signal with higher accuracy output by the closed-loop fluxgate current sensor can be determined, so that high-precision current detection can be achieved using the closed-loop fluxgate current sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 is an application environment diagram of a current detection method in an embodiment;

[0032] Figure 2 is a schematic flow chart of a current detection method in one embodiment;

[0033] Figure 3 is a schematic flow chart of a current detection method in one embodiment;

[0034] Figure 4 is a schematic flow chart of a current detection method in one embodiment;

[0035] Figure 5 is a schematic flow chart of a current detection method in one embodiment;

[0036] Figure 6is a schematic flow chart of a current detection method in one embodiment;

[0037] Figure 7 is a schematic flow chart of a current detection method in one embodiment;

[0038] Figure 8 FIG. 4 is a structural block diagram of a current detection device in an embodiment. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0040] The current detection method provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown. The application environment includes a closed-loop fluxgate current sensor 10, which includes a first current detection circuit 101, a second current detection circuit 102 and a processor 103. The first current detection circuit 101 can detect the current of the circuit to be detected with lower accuracy, and send the detected first current signal to the processor 103. At the same time, the second current detection circuit 102 can detect the current of the circuit to be detected with higher accuracy, and send the detected second current signal to the processor 103. The processor 103 can determine the current detection signal output by the closed-loop fluxgate current sensor 10 based on the first current signal and the second current signal. It can be understood that the processor 103 can be a separate chip processor or a signal processing circuit composed of multiple electronic components.

[0041] In an exemplary embodiment, Figure 2 As shown, a current detection method is provided, which is applied to Figure 1 The processor in FIG. 1 is taken as an example to illustrate, including the following steps 201 to 202. Among them:

[0042] S201, obtaining a first current signal collected by a first current detection circuit and a second current signal collected by a second detection circuit in a closed-loop fluxgate current sensor; the detection accuracy of the first current detection circuit is less than the detection accuracy of the second current detection circuit.

[0043] Among them, the closed-loop fluxgate current sensor is a sensor that uses fluxgate technology to measure current. Its working principle is based on the saturation excitation of a high-permeability magnetic core under an alternating magnetic field, and the current is measured through the nonlinear relationship between magnetic induction intensity and magnetic field intensity. The closed-loop fluxgate current sensor adjusts or controls the performance of the sensor by feeding back part of the sensor output to the input end to achieve more accurate and stable current measurement.

[0044] In an embodiment of the present application, when a closed-loop fluxgate current sensor is used to detect the current of a circuit to be detected, the first current detection circuit in the closed-loop fluxgate current sensor is used to detect the current with poor accuracy in the circuit to be detected, obtain a first current signal, and send the detected first current signal to the processor. At the same time, the second current detection circuit in the closed-loop fluxgate current sensor is used to detect the current with higher accuracy in the circuit to be detected, obtain a second current signal, and send the detected second current signal to the processor. For example, if the actual current of the circuit to be detected is 5.437A, the first current signal collected by the first current detection circuit may be 5.4A, and the second current signal collected by the second current detection circuit may be 0.037A.

[0045] S202: Determine a current detection signal output by a closed-loop fluxgate current sensor according to the first current signal and the second current signal.

[0046] In an embodiment of the present application, after obtaining the first current signal collected by the first current detection circuit and the second current signal collected by the second current detection circuit, the processor can perform preprocessing operations such as signal filtering on the first current signal and the second current signal respectively, and fuse the first current signal and the second current signal after the preprocessing operation to obtain the current detection signal output by the closed-loop fluxgate current sensor.

[0047] Optionally, the processor may also input the first current signal and the second current signal into a preset neural network model, analyze the first current signal and the second current signal through the neural network model, and output a current detection signal output by the closed-loop fluxgate current sensor. The embodiment of the present application does not limit the method for determining the current detection signal output by the closed-loop fluxgate current sensor based on the first current signal and the second current signal.

[0048] In the above current detection method, a first current signal collected by a first current detection circuit and a second current signal collected by a second detection circuit in a closed-loop fluxgate current sensor are obtained; the detection accuracy of the first current detection circuit is less than the detection accuracy of the second current detection circuit; and the current detection signal output by the closed-loop fluxgate current sensor is determined based on the first current signal and the second current signal. This method sets a second current detection circuit with higher detection accuracy in the closed-loop fluxgate current sensor, and the second current signal collected by the second detection circuit has a higher accuracy. Then, based on the first current signal collected by the first detection circuit and the second current signal collected by the second detection circuit, a current detection signal with a higher accuracy output by the closed-loop fluxgate current sensor can be determined, so that high-precision current detection can be achieved using a closed-loop fluxgate current sensor.

[0049] Next, the specific content of determining the current detection signal output by the closed-loop fluxgate current sensor according to the first current signal and the second current signal is described through an embodiment, and the specific content includes:

[0050] The first current signal and the second current signal are analyzed by using a magnetic integrator provided in the processor to obtain a current detection signal output by a closed-loop fluxgate current sensor.

[0051] Among them, the magnetic integrator measures the magnetic flux through the integrator flux coil and the integrating amplifier, and can smooth the inductive modulation ripple.

[0052] In the embodiment of the present application, after the processor obtains the first current signal and the second current signal, the first current signal can be integrated by a magnetic integrator to obtain the DC component and the AC component in the first current signal. Also, the second current signal can be integrated by a magnetic integrator to obtain the DC component and the AC component in the second current signal. Then, according to the DC component and the AC component in the first current signal and the DC component and the AC component in the second current signal, the current detection signal output by the closed-loop fluxgate current sensor is determined.

[0053] In the above current detection method, the first current signal and the second current signal are analyzed by a magnetic integrator provided in the processor to obtain a current detection signal output by a closed-loop fluxgate current sensor. The magnetic integrator can separate the DC component and the AC component in the current signal, thereby solving the problem of AC signal interference.

[0054] In one embodiment, Figure 3 As shown, the specific content of analyzing the first current signal and the second current signal by the processor in the closed-loop fluxgate current sensor to obtain the current detection signal output by the closed-loop fluxgate current sensor is introduced, and the specific content includes the following steps:

[0055] S301, using a magnetic integrator to perform integration processing on the first current signal and the second current signal respectively.

[0056] In an embodiment of the present application, the processor may use a magnetic integrator to integrate the first current signal to obtain a DC component and an AC component in the first current signal, and use a magnetic integrator to integrate the second current signal to obtain a DC component and an AC component in the second current signal.

[0057] S302, determining a current detection signal output by a closed-loop fluxgate current sensor according to the first current signal and the second current signal after integration processing.

[0058] In the embodiment of the present application, after obtaining the first current signal after the integration process and the second current signal after the integration process, the processor can fuse the first current signal after the integration process and the second current signal after the integration process, and use the fused current signal as the current detection signal output by the closed-loop fluxgate current sensor. Alternatively, the processor can input the first current signal after the integration process and the second current signal after the integration process into a preset neural network model, and output the current detection signal output by the closed-loop fluxgate current sensor through the analysis of the two current signals by the neural network model.

[0059] In the above current detection method, a magnetic integrator is used to perform integration processing on the first current signal and the second current signal respectively; and a current detection signal output by a closed-loop fluxgate current sensor is determined based on the first current signal and the second current signal after the integration processing. Through the integration processing of the magnetic integrator, the AC noise signal in the current signal can be accurately screened out to avoid the interference of the AC noise signal on the current detection signal.

[0060] In one embodiment, Figure 4 As shown, the specific content of determining the current detection signal output by the closed-loop fluxgate current sensor according to the first current signal and the second current signal after the integration process includes:

[0061] S401, adding the first current signal after integration processing and the second current signal after integration processing to obtain a fused current signal.

[0062] In the embodiment of the present application, the processor can calculate the sum of the first current signal after integration and the second current signal after integration, and use the sum as a fused current signal of the two current signals. The fused current signal does not include an AC noise signal, which can avoid interference from the AC noise signal.

[0063] S402, and using the fused current signal as a current detection signal output by the closed-loop fluxgate current sensor.

[0064] In an embodiment of the present application, after obtaining a fused current signal of the first current signal and the second current signal, the fused current signal represents an actual measured signal with higher precision. Therefore, the processor can directly use the fused current signal as the current detection signal output by the closed-loop fluxgate current sensor.

[0065] In the above current detection method, the first current signal after integration processing and the second current signal after integration processing are added to obtain a fused current signal; and the fused current signal is used as the current detection signal output by the closed-loop fluxgate current sensor. This method fuses the two current signals after integration processing by summing, and can accurately obtain the current detection signal output by the closed-loop fluxgate current sensor.

[0066] After the closed-loop fluxgate current sensor obtains the current detection signal of the circuit to be detected, it can also determine whether the circuit to be detected has an abnormality based on the detected signal. Then, in one embodiment, Figure 5 As shown, the method also includes:

[0067] S501 , comparing current detection signals corresponding to multiple current detection processes of the circuit to be detected with reference current signals respectively.

[0068] The reference current signal may be a historical current detection signal of the circuit to be detected, or may be a theoretical current signal of the circuit to be detected.

[0069] In the embodiment of the present application, in order to avoid the influence of the occasional fluctuation of the current detection signal on the judgment result, it is necessary to obtain the current detection signal corresponding to multiple current detection processes. For any current detection process, the processor can compare the current detection signal obtained in the detection process with the reference current signal to obtain the difference between the current detection signal and the reference current signal. And determine the comparison result based on the difference between the multiple current detection signals and the reference current signal.

[0070] S502: Determine whether the circuit to be detected has an abnormality based on the comparison result.

[0071] In the embodiment of the present application, if the comparison result is that the difference between most of the current detection signals and the reference current signal is large, it is determined that the circuit to be detected may be abnormal. If the comparison result is that the difference between a small part of the current detection signals and the reference current signal is large, or the difference between all the current detection signals and the reference current signal is small, it is determined that the circuit to be detected does not have an abnormality.

[0072] In the above current detection method, the current detection signals corresponding to the multiple current detection processes of the circuit to be detected are compared with the reference current signal respectively; and according to the comparison results, it is judged whether the circuit to be detected has an abnormality. By comparing multiple current detection signals with the reference current detection signal, this method can accurately judge whether the circuit to be detected has an abnormality based on the comparison results of a large amount of detection data, thereby avoiding the influence of accidental current detection signal fluctuations on the judgment result.

[0073] In one embodiment, Figure 6 As shown, the specific contents of judging whether the circuit to be detected has an abnormality according to the comparison result include:

[0074] S601, obtaining the number of current detection signals whose difference with a reference current signal is greater than a preset difference threshold.

[0075] In an embodiment of the present application, the processor can obtain the difference between each current detection signal and the reference current signal, and compare the difference corresponding to each current detection signal with a preset difference threshold, and determine the number of current detections whose difference is greater than the preset difference threshold based on the comparison result.

[0076] S602: When the number of current detection signals is greater than a preset number threshold, it is determined that an abnormality exists in the circuit to be detected.

[0077] In the embodiment of the present application, when it is determined that the number of current detection signals is greater than a preset number threshold, it indicates that most of the current detection results are abnormal. At this time, the processor can determine that an abnormality exists in the circuit to be detected.

[0078] In the above current detection method, the number of current detection signals whose difference with the reference current signal is greater than the preset difference threshold is obtained; when the number of current detection signals is greater than the preset number threshold, it is determined that the circuit to be detected has an abnormality. This method can accurately determine the number of abnormality detections by obtaining the number of current detection signals whose difference with the reference current signal is greater than the preset difference threshold, and comparing the number with the preset number threshold, thereby accurately determining whether the circuit to be detected has an abnormality.

[0079] As a specific embodiment of the present application, the current detection process is described in detail below. In one embodiment, Figure 7 As shown, the current detection method includes:

[0080] S701, obtaining a first current signal collected by a first current detection circuit and a second current signal collected by a second detection circuit in a closed-loop fluxgate current sensor; the detection accuracy of the first current detection circuit is less than the detection accuracy of the second current detection circuit;

[0081] S702, using a magnetic integrator to perform integration processing on the first current signal and the second current signal respectively;

[0082] S703, adding the first current signal after integration processing and the second current signal after integration processing to obtain a fused current signal;

[0083] S704, using the fused current signal as a current detection signal output by a closed-loop fluxgate current sensor;

[0084] S705, comparing the current detection signals corresponding to the multiple current detection processes of the circuit to be detected with the reference current signal respectively;

[0085] S706, acquiring the number of current detection signals whose difference with the reference current signal is greater than a preset difference threshold;

[0086] S707, when the number of current detection signals is greater than a preset number threshold, determine that an abnormality exists in the circuit to be detected.

[0087] It should be understood that, although the steps in the flowcharts involved in the above embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0088] Based on the same inventive concept, the embodiment of the present application also provides a current detection device for implementing the current detection method involved above. The implementation solution provided by the device to solve the problem is similar to the implementation solution recorded in the above method, so the specific limitations in one or more current detection device embodiments provided below can refer to the limitations of the current detection method above, and will not be repeated here.

[0089] In an exemplary embodiment, Figure 8 As shown, a current detection device is provided, comprising: an acquisition module 11 and a determination module 12, wherein:

[0090] An acquisition module 11 is used to acquire a first current signal acquired by a first current detection circuit and a second current signal acquired by a second detection circuit in a closed-loop fluxgate current sensor; the detection accuracy of the first current detection circuit is less than the detection accuracy of the second current detection circuit;

[0091] The determination module 12 is used to determine the current detection signal output by the closed-loop fluxgate current sensor according to the first current signal and the second current signal.

[0092] In an exemplary embodiment, the above-mentioned determination module includes a determination unit, wherein:

[0093] The determination unit is used to analyze the first current signal and the second current signal by using a magnetic integrator provided in the processor to obtain a current detection signal output by the closed-loop fluxgate current sensor.

[0094] In an exemplary embodiment, the above-mentioned determination unit is also used to use a magnetic integrator to integrate the first current signal and the second current signal respectively; based on the integrated first current signal and the second current signal, determine the current detection signal output by the closed-loop fluxgate current sensor.

[0095] In an exemplary embodiment, the determination unit is further configured to add the integrated first current signal and the integrated second current signal to obtain a fused current signal; and use the fused current signal as a current detection signal output by the closed-loop fluxgate current sensor.

[0096] In an exemplary embodiment, the current detection device further includes: a comparison module and a judgment module, wherein:

[0097] A comparison module, used for comparing the current detection signals corresponding to multiple current detection processes of the circuit to be detected with the reference current signal respectively;

[0098] The judgment module is used to judge whether there is an abnormality in the circuit to be detected according to the comparison result.

[0099] In an exemplary embodiment, the above-mentioned judgment module includes: an acquisition unit and an abnormality determination unit, wherein:

[0100] An acquisition unit, used for acquiring the number of current detection signals whose difference with the reference current signal is greater than a preset difference threshold;

[0101] The abnormality determination unit is used to determine that an abnormality exists in the circuit to be detected when the number of current detection signals is greater than a preset number threshold.

[0102] Each module in the above-mentioned current detection device can be implemented in whole or in part by software, hardware and a combination thereof. Each of the above-mentioned modules can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute the operations corresponding to each of the above modules.

[0103] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the content of any one embodiment of the current detection method described above is implemented.

[0104] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the content of any one embodiment of the current detection method described above is implemented.

[0105] In one embodiment, a computer program product is provided, including a computer program, which implements the content of any one embodiment of the current detection method when executed by a processor.

[0106] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0107] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0108] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0109] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A current detection method, characterized in that: A processor applied to a closed-loop fluxgate current sensor, the method comprising: Acquire a first current signal collected by a first current detection circuit and a second current signal collected by a second detection circuit in a closed-loop fluxgate current sensor; the detection accuracy of the first current detection circuit is less than the detection accuracy of the second current detection circuit; A current detection signal output by the closed-loop fluxgate current sensor is determined according to the first current signal and the second current signal.

2. The method according to claim 1, characterized in that Determining the current detection signal output by the closed-loop fluxgate current sensor according to the first current signal and the second current signal includes: The first current signal and the second current signal are analyzed by using a magnetic integrator provided in the processor to obtain a current detection signal output by the closed-loop fluxgate current sensor.

3. The method according to claim 2, characterized in that The method of analyzing the first current signal and the second current signal by using a processor in the closed-loop fluxgate current sensor to obtain a current detection signal output by the closed-loop fluxgate current sensor includes: Using the magnetic integrator to perform integration processing on the first current signal and the second current signal respectively; The current detection signal output by the closed-loop fluxgate current sensor is determined according to the first current signal and the second current signal after integration processing.

4. The method according to claim 3, characterized in that The step of determining the current detection signal output by the closed-loop fluxgate current sensor according to the first current signal and the second current signal after integration processing comprises: Adding the first current signal after the integration process and the second current signal after the integration process to obtain a fused current signal; The fused current signal is used as a current detection signal output by the closed-loop fluxgate current sensor.

5. The method according to any one of claims 1 to 4, characterized in that: The method further comprises: Compare the current detection signals corresponding to the multiple current detection processes of the circuit to be detected with the reference current signal respectively; According to the comparison result, it is determined whether the circuit to be detected has an abnormality.

6. The method according to claim 5, characterized in that The step of judging whether the circuit to be detected has an abnormality according to the comparison result includes: Acquire the number of current detection signals whose difference with the reference current signal is greater than a preset difference threshold; When the number of the current detection signals is greater than a preset number threshold, it is determined that an abnormality exists in the circuit to be detected.

7. A current detection device, characterized in that: The device comprises: An acquisition module, used to acquire a first current signal acquired by a first current detection circuit and a second current signal acquired by a second detection circuit in a closed-loop fluxgate current sensor; the detection accuracy of the first current detection circuit is less than the detection accuracy of the second current detection circuit; A determination module is used to determine a current detection signal output by the closed-loop fluxgate current sensor according to the first current signal and the second current signal.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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