Method, device, storage medium and electronic device for processing electromagnetic wave interference signals

Abstract

The application discloses a processing method and device of an electromagnetic interference signal, a storage medium and an electronic device. The method comprises the following steps: determining the bandwidth of a receiver of the electromagnetic interference signal; obtaining a harmonic frequency spectrum distribution range value of a fundamental wave when the fundamental wave is frequency jittered, and determining a frequency jittering parameter of the fundamental wave according to the frequency of the fundamental wave, the harmonic frequency spectrum distribution range value and the bandwidth of the receiver; and controlling the fundamental wave to perform frequency jittering based on the frequency jittering parameter, so as to attenuate a target electromagnetic interference signal, wherein the target electromagnetic interference signal is an electromagnetic interference signal received by the receiver. Through the application, the problem that the electromagnetic interference signal cannot be effectively attenuated by quantitatively controlling the frequency jittering of the fundamental wave in the related art is solved.

Description

Technical Field

[0001] This application relates to the field of electromagnetic interference technology, and more specifically, to a method, apparatus, storage medium, and electronic device for processing electromagnetic interference signals. Background Technology

[0002] In the field of electromagnetic compatibility, controlling the fundamental frequency to jitter is an effective way to reduce the interference frequency of electromagnetic interference signals.

[0003] However, the understanding of reducing electromagnetic interference signals through frequency jitter in related technologies is qualitative. When the fundamental frequency is jittered, it is difficult to quantitatively determine under what circumstances it begins to have an effect on attenuating electromagnetic interference signals, whether there is a limit to the attenuation of electromagnetic interference signals, and under what circumstances the attenuation of electromagnetic interference signals begins to have the best effect.

[0004] There is currently no effective solution to the problem that it is difficult to effectively attenuate electromagnetic interference signals by quantitatively controlling the frequency jitter of the fundamental wave in related technologies. Summary of the Invention

[0005] This application provides a method, apparatus, storage medium, and electronic device for processing electromagnetic interference signals, in order to solve the problem in related technologies that it is difficult to effectively attenuate electromagnetic interference signals by quantitatively controlling the frequency jitter of the fundamental wave.

[0006] According to one aspect of this application, a method for processing electromagnetic interference is provided. The method includes: determining the bandwidth of a receiver for an electromagnetic interference signal; obtaining the spectral distribution range of harmonics of a fundamental wave during frequency jitter; determining frequency jitter parameters of the fundamental wave based on the frequency of the fundamental wave, the spectral distribution range of the harmonics, and the bandwidth of the receiver; and controlling the fundamental wave to perform frequency jitter based on the frequency jitter parameters to attenuate the target electromagnetic interference signal, wherein the target electromagnetic interference signal is the electromagnetic interference signal received by the receiver.

[0007] Optionally, determining the fundamental frequency jitter parameter based on the fundamental frequency, the spectral distribution range of the harmonics, and the receiver bandwidth includes: determining the harmonic number corresponding to the spectral distribution range of the harmonics being equal to the receiver bandwidth, thus obtaining the first harmonic number; obtaining a preset number of harmonic numbers after the first harmonic number, thus obtaining a set of the first harmonic numbers, and determining any one harmonic number in the set of the first harmonic numbers as the first frequency jitter parameter, wherein the first frequency jitter parameter is used to indicate that the fundamental frequency jitter begins to attenuate the target electromagnetic interference signal.

[0008] Optionally, determining the fundamental frequency jitter parameter based on the fundamental frequency, the spectral distribution range of the harmonics, and the receiver bandwidth includes: determining the harmonic number corresponding to the spectral distribution range of the harmonics being equal to the fundamental frequency, thus obtaining the second harmonic number; obtaining a preset number of harmonic numbers after the second harmonic number, thus obtaining a set of second harmonic numbers, and determining any one harmonic number in the set of second harmonic numbers as the second frequency jitter parameter, wherein the second frequency jitter parameter is used to indicate that the attenuation of the target electromagnetic interference signal by the fundamental frequency jitter reaches its maximum.

[0009] Optionally, determining the fundamental frequency jitter parameter based on the fundamental frequency, the spectral distribution range of the harmonics, and the receiver bandwidth includes: calculating the ratio of the receiver bandwidth to the fundamental frequency, and determining the ratio as a third frequency jitter parameter, wherein the third frequency jitter parameter is used to indicate the maximum attenuation of the target electromagnetic interference signal by the fundamental frequency jitter.

[0010] Optionally, controlling the fundamental wave to perform frequency jitter based on frequency jitter parameters to attenuate the target electromagnetic interference signal includes: determining the frequency of the target electromagnetic interference information and determining the target harmonic order corresponding to the frequency of the target electromagnetic interference signal, wherein the target harmonic order is the harmonic order corresponding to the fundamental wave attenuating the target electromagnetic interference signal through frequency jitter; determining the target harmonic order as the updated second frequency jitter parameter and determining the spectral distribution range value of the harmonic corresponding to the updated second frequency jitter parameter to obtain the target spectral distribution range value; determining the frequency jitter range value of the fundamental wave when the target spectral distribution range value is equal to the frequency of the fundamental wave to obtain the target frequency jitter range value; and controlling the fundamental wave to perform frequency jitter according to the target frequency jitter range value to attenuate the target electromagnetic interference signal.

[0011] Optionally, determining the target harmonic order corresponding to the frequency of the target electromagnetic interference signal includes: calculating the ratio of the frequency of the target electromagnetic interference information to the frequency of the fundamental wave; rounding the ratio, and determining the rounded value as the target harmonic order.

[0012] Optionally, after the control fundamental wave is frequency-dithered according to the target frequency dithering range to attenuate the target electromagnetic interference signal, the method further includes: calculating the ratio of the frequency of the target electromagnetic interference information to the frequency of the fundamental wave to obtain the updated third frequency dithering parameter; determining whether all target electromagnetic interference signals are attenuated when the control fundamental wave is frequency-dithered based on the updated third frequency dithering parameter; and determining the amplitude value of the target electromagnetic interference signal to be attenuated if all target electromagnetic interference signals are not attenuated.

[0013] According to another aspect of this application, an electromagnetic interference processing apparatus is provided. The apparatus includes: a first determining unit for determining the bandwidth of a receiver of an electromagnetic interference signal; a second determining unit for acquiring the spectral distribution range of harmonics of a fundamental wave during frequency jitter, and determining frequency jitter parameters of the fundamental wave based on the frequency of the fundamental wave, the spectral distribution range of the harmonics, and the bandwidth of the receiver; and a control unit for controlling the fundamental wave to perform frequency jitter based on the frequency jitter parameters to attenuate the target electromagnetic interference signal, wherein the target electromagnetic interference signal is the electromagnetic interference signal received by the receiver.

[0014] Optionally, the second determining unit includes: a first determining module, used to determine the harmonic number corresponding to the harmonic frequency distribution range value being equal to the bandwidth of the receiver, thereby obtaining the first harmonic number; and a first acquiring module, used to acquire a preset number of harmonic numbers after the first harmonic number, thereby obtaining a set of the first harmonic numbers, and to determine any one harmonic number in the set of the first harmonic numbers as a first frequency jitter parameter, wherein the first frequency jitter parameter is used to indicate that the frequency jitter of the fundamental wave begins to attenuate the target electromagnetic interference signal.

[0015] Optionally, the second determining unit further includes: a second determining module, used to determine the harmonic number corresponding to the frequency of the fundamental wave when the spectral distribution range of the harmonic is equal to the frequency of the fundamental wave, to obtain the second harmonic number; and a second acquiring module, used to acquire a preset number of harmonic numbers after the second harmonic number, to obtain a set of second harmonic numbers, and to determine any one harmonic number in the set of second harmonic numbers as a second frequency jitter parameter, wherein the second frequency jitter parameter is used to indicate that the attenuation amplitude of the fundamental wave frequency jitter on the target electromagnetic interference signal reaches the maximum.

[0016] Optionally, the second determining unit further includes: a third determining module, used to calculate the ratio of the receiver's bandwidth to the fundamental frequency, and to determine the ratio as a third frequency jitter parameter, wherein the third frequency jitter parameter is used to indicate the maximum attenuation of the target electromagnetic interference signal by the fundamental frequency jitter.

[0017] According to another aspect of the present invention, a non-volatile storage medium is also provided, the non-volatile storage medium including a stored program, wherein the program, when running, controls the device where the non-volatile storage medium is located to perform an electromagnetic interference processing method.

[0018] According to another aspect of the present invention, an electronic device is also provided, comprising a processor and a memory; the memory stores computer-readable instructions, and the processor is configured to execute the computer-readable instructions, wherein the computer-readable instructions, when executed, perform an electromagnetic interference processing method.

[0019] This application employs the following steps: determining the bandwidth of the receiver for the electromagnetic interference signal; obtaining the spectral distribution range of the harmonics during frequency jitter of the fundamental wave, and determining the frequency jitter parameters of the fundamental wave based on the fundamental wave frequency, the spectral distribution range of the harmonics, and the receiver bandwidth; controlling the fundamental wave to jitter based on the frequency jitter parameters to attenuate the target electromagnetic interference signal, wherein the target electromagnetic interference signal is the electromagnetic interference signal received by the receiver. This solves the problem in related technologies where it is difficult to effectively attenuate electromagnetic interference signals by quantitatively controlling the frequency jitter of the fundamental wave. By determining the frequency jitter parameters of the fundamental wave and controlling the fundamental wave to jitter based on the frequency jitter parameters, the effect of effectively attenuating electromagnetic interference signals is achieved. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0021] Figure 1 This is a flowchart of an electromagnetic interference processing method provided according to an embodiment of this application;

[0022] Figure 2 This is a schematic diagram illustrating the relationship between the width of harmonics and the bandwidth of the electromagnetic interference signal receiver in the electromagnetic interference processing method provided according to the embodiments of this application.

[0023] Figure 3 This is a schematic diagram illustrating the attenuation law of the fundamental frequency jitter on the electromagnetic interference signal in the electromagnetic interference processing method provided according to the embodiments of this application.

[0024] Figure 4 This is a schematic diagram illustrating the attenuation effect of fundamental frequency jitter on electromagnetic interference signals in the electromagnetic interference processing method provided according to the embodiments of this application.

[0025] Figure 5 This is a schematic diagram of an electromagnetic interference processing apparatus provided according to an embodiment of this application. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0029] For ease of description, the following explains some of the nouns or terms used in the embodiments of this application:

[0030] EMI: Electromagnetic interference, refers to the interference caused to surrounding electronic equipment by electromagnetic waves generated by electromagnetic induction when an electrical product is powered on.

[0031] According to an embodiment of this application, a method for processing electromagnetic interference is provided.

[0032] Figure 1 This is a flowchart of an electromagnetic interference processing method according to an embodiment of this application. Figure 1 As shown, the method includes the following steps:

[0033] Step S102: Determine the bandwidth of the receiver for the electromagnetic interference signal.

[0034] Specifically, the function of an electromagnetic interference (EMI) receiver is to receive electromagnetic interference signals. Different EMI receivers can have different bandwidths. According to CISPR 16-1-1 (International Special Committee on Radio Interference), the bandwidth distribution of EMI receivers is as follows:

[0035]

[0036] Step S104: Obtain the spectral distribution range of the harmonics when the fundamental wave is jittering, and determine the frequency jitter parameters of the fundamental wave based on the frequency of the fundamental wave, the spectral distribution range of the harmonics, and the bandwidth of the receiver.

[0037] For example, switching power supplies are prone to generating electromagnetic interference signals during operation. In order to attenuate the electromagnetic interference signals, the operating frequency of the switching power supply is not fixed, but changes periodically. That is, by dithering the fundamental frequency, the harmonics are dithered accordingly, thereby reducing the electromagnetic interference signals.

[0038] Specifically, if the fundamental frequency is f1, and the fundamental frequency f1 fluctuates by Δf in the vicinity, then each harmonic will also fluctuate by ±nΔf, or 2nΔf. Therefore, the spectral distribution range of the fundamental and each harmonic (which can be simply referred to as the frequency fluctuation range) is:

[0039] Given f1±Δf, 2f1±2Δf, 3f1±3Δf, ..., nf1±nΔf, we can assign 2f1 to f2, 3f1 to f3, ..., 3f1 to f3, resulting in: f1±Δf, f2±2Δf, f3±3Δf, ..., f n ±nΔf. Figure 2 This is a schematic diagram illustrating the relationship between the harmonic width and the bandwidth of the electromagnetic interference signal receiver in the electromagnetic interference processing method provided in the embodiments of this application. It should be noted that when the fundamental wave undergoes frequency dithering, the larger the harmonic order n, the larger the harmonic spectral distribution range value 2nΔf is. When the dithering range of the nth harmonic just falls completely within the bandwidth B of the EMI receiver... W In the case of the (n+1)th harmonic, the frequency dithering range exceeds the bandwidth B. W Gradually, this process has shown an effect of attenuating electromagnetic interference signals. Therefore, it is necessary to accurately calculate the fundamental frequency jitter parameter by combining the fundamental frequency, the spectral distribution range of harmonics, and the bandwidth of the EMI receiver, in order to quantitatively attenuate the electromagnetic interference signal. It should be noted that the calculated fundamental frequency jitter parameter will vary depending on the bandwidth of the EMI receiver.

[0040] Step S106: Control the fundamental wave to perform frequency jitter based on the frequency jitter parameter in order to attenuate the target electromagnetic interference signal, wherein the target electromagnetic interference signal is the electromagnetic interference signal received by the receiver.

[0041] Specifically, when frequency jittering is applied to the fundamental wave, the frequency jittering parameters of the fundamental wave are controlled to achieve a suitable frequency jittering range in order to effectively attenuate the target electromagnetic interference signal.

[0042] The electromagnetic interference processing method provided in this application determines the bandwidth of the receiver of the electromagnetic interference signal; obtains the spectral distribution range of the harmonics of the fundamental wave during frequency jitter; and determines the frequency jitter parameters of the fundamental wave based on the frequency of the fundamental wave, the spectral distribution range of the harmonics, and the bandwidth of the receiver; and controls the fundamental wave to jitter based on the frequency jitter parameters to attenuate the target electromagnetic interference signal. The target electromagnetic interference signal is the electromagnetic interference signal received by the receiver. This method solves the problem in related technologies where it is difficult to effectively attenuate electromagnetic interference signals by quantitatively controlling the frequency jitter of the fundamental wave. By determining the frequency jitter parameters of the fundamental wave and controlling the fundamental wave to jitter based on these parameters, effective attenuation of the electromagnetic interference signal is achieved.

[0043] To determine under what conditions the frequency jitter of the fundamental wave begins to attenuate the electromagnetic interference signal, optionally, in the electromagnetic interference processing method provided in this application embodiment, determining the frequency jitter parameter of the fundamental wave based on the frequency of the fundamental wave, the spectral distribution range of the harmonics, and the bandwidth of the receiver includes: determining the harmonic number corresponding to the spectral distribution range of the harmonics being equal to the bandwidth of the receiver, obtaining the first harmonic number; obtaining a preset number of harmonic numbers after the first harmonic number, obtaining the first harmonic number set, and determining any one harmonic number in the first harmonic number set as the first frequency jitter parameter, wherein the first frequency jitter parameter is used to indicate that the frequency jitter of the fundamental wave begins to attenuate the target electromagnetic interference signal.

[0044] Specifically, the spectral distribution range of harmonics is determined by the frequency jitter range of the fundamental wave. When the frequency jitter range of the fundamental wave is Δf, the spectral distribution range of the harmonics is 2nΔf, and the receiver bandwidth is B. W B W It can be determined according to the definition in CISRP 16-1-1.

[0045] When the fundamental frequency is not jittered, each harmonic is also at a fixed frequency point. The energy of the fundamental frequency and each harmonic falls completely within the bandwidth of the receiver, and the harmonic amplitude is relatively high.

[0046] When the fundamental frequency dithering occurs, the larger the harmonic order n, the larger the spectral distribution range 2nΔf of the nth harmonic becomes. When 2nΔf = B W When the spectral distribution range of the nth harmonic is equal to the receiver's bandwidth, the dithering range of the nth harmonic falls exactly within the bandwidth, resulting in no attenuation effect. However, the dithering range of harmonics after the nth harmonic exceeds the bandwidth B. W Gradually, a decay effect appeared.

[0047] Therefore, through 2nΔf=B W This condition can be obtained This point is named the first turning point n1, that is... Define n1 and any one of the points following n1 as the first frequency jitter parameter. For example, n1 can be defined as the first frequency jitter parameter. By selecting a suitable frequency jitter range for the fundamental wave, if the spectral distribution range of the harmonics exceeds the bandwidth under the first frequency jitter parameter, it indicates that the frequency jitter of the fundamental wave begins to attenuate the electromagnetic interference signal. In other words, the spectral distribution range of the harmonics corresponding to the first frequency jitter parameter begins to attenuate the electromagnetic interference signal.

[0048] The attenuation effect of fundamental frequency jitter on electromagnetic interference signals has a limit. Optionally, in the electromagnetic interference processing method provided in this application embodiment, determining the fundamental frequency jitter parameter based on the fundamental frequency, the spectral distribution range of harmonics, and the receiver bandwidth includes: determining the harmonic number corresponding to the spectral distribution range of the harmonics being equal to the fundamental frequency, thus obtaining the second harmonic number; obtaining a preset number of harmonic numbers after the second harmonic number, thus obtaining a set of second harmonic numbers, and determining any one harmonic number in the set of second harmonic numbers as the second frequency jitter parameter, wherein the second frequency jitter parameter is used to indicate that the attenuation amplitude of the fundamental frequency jitter on the target electromagnetic interference signal reaches its maximum.

[0049] Specifically, the spectral distribution range of the nth harmonic begins to attenuate the electromagnetic interference signal. As the frequency dithering range 2nΔf continues to increase with the harmonic number n, the attenuation effect of the harmonic spectral distribution range on the electromagnetic interference signal becomes stronger. When the spectral distribution range of a certain harmonic is equal to the frequency of the fundamental wave, that is, 2nΔf=f1, it indicates that the frequency dithering range of this harmonic and the (n+1)th harmonic begins to overlap.

[0050] It should be noted that when the frequency dithering ranges of the nth harmonic and the (n+1)th harmonic overlap, the harmonic energy is already evenly distributed on the frequency axis. The frequency dithering of the fundamental wave reaches its limit in attenuating the electromagnetic interference signal. No matter how wide the frequency dithering ranges of the (n+1), (n+2), (n+3), etc., harmonics are, or how the frequency dithering ranges overlap, they cannot further attenuate the electromagnetic interference signal.

[0051] Therefore, based on the condition 2nΔf=f1, we can obtain... This point is named the second turning point n2, that is... Let n2 and any one of the points following n2 be defined as the second frequency jitter parameter. For example, n2 can be defined as the first frequency jitter parameter. By selecting a suitable frequency jitter range for the fundamental wave, if the harmonic energy is evenly distributed on the frequency axis under the second frequency jitter parameter, it indicates that the frequency jitter of the fundamental wave has reached its limit in attenuating electromagnetic interference signals. In other words, the harmonic spectrum distribution range value corresponding to the second frequency jitter parameter has reached its limit in attenuating electromagnetic interference signals.

[0052] The limit of the attenuation effect of the fundamental frequency jitter on electromagnetic interference signals can be quantitatively calculated. Optionally, in the electromagnetic interference processing method provided in the embodiments of this application, determining the fundamental frequency jitter parameter based on the fundamental frequency, the spectral distribution range of the harmonics, and the bandwidth of the receiver includes: calculating the ratio of the receiver bandwidth to the fundamental frequency, and determining the ratio as the third frequency jitter parameter, wherein the ratio of the receiver bandwidth to the fundamental frequency is used to indicate the maximum attenuation amplitude of the fundamental frequency jitter on the target electromagnetic interference signal.

[0053] Specifically, for the n2th harmonic, the spectral distribution range of the harmonic is equal to the frequency f1 of the fundamental wave, while f1 > B. W The receiver only receives a portion of the energy. The ratio of the receiver's bandwidth to the fundamental frequency can be used to intuitively characterize the degree of attenuation of electromagnetic interference caused by the fundamental frequency jitter. The attenuation limit is calculated based on the bandwidth ratio. That is, the third frequency jitter parameter. For ease of calculation, the attenuation amplitude limit is converted into a logarithm to obtain the jitter attenuation amplitude value.

[0054] As can be seen from the above embodiments, the attenuation law of electromagnetic interference signals due to the frequency jitter of the fundamental wave is represented by a three-segment broken line. Figure 3 This is a schematic diagram illustrating the attenuation law of the fundamental frequency jitter on the electromagnetic interference signal in the electromagnetic interference processing method provided in the embodiments of this application, as shown below. Figure 3 As shown:

[0055] The amplitude of the first segment of the broken line is 0 because the harmonic dithering range does not exceed the EMI receiver bandwidth. The inflection point of the first segment is the first inflection point. Specifically, when the fundamental frequency dithering range is f1 ± Δf, the harmonic order at the first inflection point is... B W f1 is the bandwidth of the EMI receiver and f1 is the fundamental frequency.

[0056] The second broken line is a logarithmic sloping line because after the first inflection point, the harmonic dithering range becomes increasingly larger, and the energy that the EMI receiver bandwidth can intercept decreases. The inflection point of the second broken line is the second inflection point, where the harmonic order is...

[0057] The third broken line is a constant horizontal line because after the second inflection point, the energy of each harmonic is completely and evenly distributed, and the attenuation value reaches its limit. Specifically, the limit value of the frequency dithering attenuation amplitude is...

[0058] Therefore, through the embodiments of this application, it is possible not only to clearly calculate which harmonic begins to have a dithering attenuation effect, and which harmonic begins to have the dithering attenuation value reach the limit value, but also to clearly calculate the limit attenuation amplitude of dithering. Thus, the optimal dithering range can be calculated based on the interference frequency, so that the frequency dithering of the fundamental wave achieves the best attenuation effect on the electromagnetic interference signal.

[0059] Based on the attenuation law of electromagnetic interference signals by the frequency jitter of the fundamental wave, electromagnetic interference signals of a specific frequency can be attenuated. Optionally, in the electromagnetic interference processing method provided in the embodiments of this application, controlling the fundamental wave to perform frequency jitter based on the frequency jitter parameter to attenuate the target electromagnetic interference signal includes: determining the frequency of the target electromagnetic interference information and determining the target harmonic number corresponding to the frequency of the target electromagnetic interference signal, wherein the target harmonic number is the harmonic number corresponding to the fundamental wave attenuating the target electromagnetic interference signal through frequency jitter; determining the target harmonic number as the updated second frequency jitter parameter and determining the spectral distribution range value of the harmonic corresponding to the updated second frequency jitter parameter to obtain the target spectral distribution range value; determining the frequency jitter range value of the fundamental wave when the target spectral distribution range value is equal to the frequency of the fundamental wave to obtain the target frequency jitter range value; and controlling the fundamental wave to perform frequency jitter according to the target frequency jitter range value to attenuate the target electromagnetic interference signal.

[0060] Specifically, as can be seen from the above embodiments, when the EMI interference frequency f is known... x This allows us to determine the optimal jitter range. Since the larger the fundamental frequency jitter range, the more difficult it is to control, and it can sometimes lead to system stability problems, determining the optimal jitter range is equivalent to determining the minimum jitter range.

[0061] The solution for the minimum jitter range is as follows:

[0062] Determine the interference frequency f x The corresponding harmonic order is That is, the target harmonic number. Optionally, in the electromagnetic interference processing method provided in the embodiments of this application, determining the target harmonic number corresponding to the frequency of the target electromagnetic interference signal includes: calculating the ratio of the frequency of the target electromagnetic interference information to the frequency of the fundamental wave; rounding the ratio, and determining the rounded value as the target harmonic number.

[0063] Furthermore, n xAssuming the second inflection point is the point where the frequency dithering attenuation value just reaches its maximum, the harmonic spectral distribution range at the second inflection point satisfies the following condition: 2n x Δf = f1, combined with and 2n x The formulas Δf = f1 can be used to calculate the optimal frequency dithering range.

[0064] It should be noted that, since the attenuation effect of frequency jitter on electromagnetic interference signals has a limit, when frequency jitter cannot further attenuate the electromagnetic interference signals, the amplitude value of the electromagnetic interference signal to be attenuated can be determined. Optionally, in the electromagnetic interference processing method provided in this application embodiment, after controlling the fundamental wave to perform frequency jitter according to the target frequency jitter range value to attenuate the target electromagnetic interference signal, the method further includes: calculating the ratio of the frequency of the target electromagnetic interference information to the frequency of the fundamental wave to obtain an updated third frequency jitter parameter; determining whether all target electromagnetic interference signals are attenuated when the fundamental wave is controlled to perform frequency jitter based on the updated third frequency jitter parameter; and determining the amplitude value of the target electromagnetic interference signal to be attenuated if all target electromagnetic interference signals are not attenuated.

[0065] Specifically, when frequency jittering of the fundamental wave cannot further attenuate the electromagnetic interference signal, the amplitude value of the electromagnetic interference signal to be attenuated can be determined, and other methods can be used to attenuate the electromagnetic interference signal. This avoids the problem in related technologies where the limit of the attenuation effect of frequency jitter on the electromagnetic interference signal cannot be determined, and the parameters corresponding to frequency jitter are constantly adjusted, which consumes manpower and resources and cannot further attenuate the electromagnetic interference signal.

[0066] Figure 4 This is a schematic diagram illustrating the attenuation effect of fundamental frequency jitter on electromagnetic interference signals in the electromagnetic interference processing method provided in the embodiments of this application, as shown below. Figure 4 As shown:

[0067] The difference between the peak envelope and the average envelope can be used to obtain the value in this embodiment. Figure 3 The attenuation law of electromagnetic interference signal caused by the frequency jitter of the fundamental wave is described.

[0068] from Figure 4 As can be seen from this, at the first inflection point, the average value has not yet decayed. At the second inflection point, the frequency dithering spectrum of the harmonics has been filled and overlapped, and the difference between the peak envelope and the average value envelope reaches its maximum value. In the frequency domain after the second inflection point, the attenuation value between the average value and the peak value remains at its maximum value, and the frequency dithering of the fundamental wave no longer has an attenuation effect on the electromagnetic interference signal.

[0069] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0070] This application also provides an electromagnetic interference processing apparatus. It should be noted that the electromagnetic interference processing apparatus of this application can be used to execute the electromagnetic interference processing method provided in this application. The electromagnetic interference processing apparatus provided in this application will be described below.

[0071] Figure 5 This is a schematic diagram of an electromagnetic interference processing apparatus according to an embodiment of this application. Figure 5 As shown, the device includes: a first determining unit 10, a second determining unit 20, and a control unit 30.

[0072] Specifically, the first determining unit 10 is used to determine the bandwidth of the receiver of the electromagnetic interference signal.

[0073] The second determining unit 20 is used to obtain the spectral distribution range of the harmonics when the fundamental wave is jittered, and to determine the frequency jitter parameters of the fundamental wave based on the frequency of the fundamental wave, the spectral distribution range of the harmonics and the bandwidth of the receiver.

[0074] The control unit 30 is used to control the fundamental wave to perform frequency jitter based on the frequency jitter parameter in order to attenuate the target electromagnetic interference signal, wherein the target electromagnetic interference signal is the electromagnetic interference signal received by the receiver.

[0075] The electromagnetic interference processing apparatus provided in this application embodiment determines the bandwidth of the receiver of the electromagnetic interference signal through a first determining unit 10; a second determining unit 20 obtains the spectral distribution range of the harmonics of the fundamental wave during frequency jitter, and determines the frequency jitter parameters of the fundamental wave based on the frequency of the fundamental wave, the spectral distribution range of the harmonics, and the bandwidth of the receiver; and a control unit 30 controls the fundamental wave to perform frequency jitter based on the frequency jitter parameters to attenuate the target electromagnetic interference signal. The target electromagnetic interference signal is the electromagnetic interference signal received by the receiver. This solves the problem in related technologies where it is difficult to effectively attenuate electromagnetic interference signals by quantitatively controlling the frequency jitter of the fundamental wave. By determining the frequency jitter parameters of the fundamental wave and controlling the fundamental wave to perform frequency jitter based on the frequency jitter parameters, the effective attenuation of the electromagnetic interference signal is achieved.

[0076] Optionally, in the electromagnetic interference processing apparatus provided in this application embodiment, the second determining unit 20 includes: a first determining module, used to determine the harmonic number corresponding to the harmonic spectral distribution range value being equal to the bandwidth of the receiver, to obtain a first harmonic number; and a first acquiring module, used to acquire a preset number of harmonic numbers after the first harmonic number, to obtain a set of first harmonic numbers, and to determine any one harmonic number in the set of first harmonic numbers as a first frequency jitter parameter, wherein the first frequency jitter parameter is used to indicate that the frequency jitter of the fundamental wave begins to attenuate the target electromagnetic interference signal.

[0077] Optionally, in the electromagnetic interference processing apparatus provided in this application embodiment, the second determining unit 20 further includes: a second determining module, used to determine the harmonic number corresponding to the frequency of the fundamental wave when the spectral distribution range value of the harmonic is equal to the frequency of the fundamental wave, to obtain the second harmonic number; and a second acquiring module, used to acquire a preset number of harmonic numbers after the second harmonic number, to obtain a set of second harmonic numbers, and to determine any one harmonic number in the set of second harmonic numbers as a second frequency jitter parameter, wherein the second frequency jitter parameter is used to indicate that the attenuation amplitude of the fundamental wave frequency jitter on the target electromagnetic interference signal reaches the maximum.

[0078] Optionally, in the electromagnetic interference processing apparatus provided in the embodiments of this application, the second determining unit 20 further includes a third determining module, used to calculate the ratio of the receiver bandwidth to the fundamental frequency, and determine the ratio as a third frequency jitter parameter, wherein the third frequency jitter parameter is used to indicate the maximum attenuation amplitude of the fundamental frequency jitter on the target electromagnetic interference signal.

[0079] Optionally, in the electromagnetic interference processing apparatus provided in this application embodiment, the second determining unit 20 includes: a fourth determining module, used to determine the frequency of the target electromagnetic interference information and determine the target harmonic number corresponding to the frequency of the target electromagnetic interference signal, wherein the target harmonic number is the harmonic number corresponding to the fundamental wave attenuating the target electromagnetic interference signal through frequency jitter; a fifth determining module, used to determine the target harmonic number as the updated second frequency jitter parameter and determine the spectral distribution range value of the harmonic corresponding to the updated second frequency jitter parameter, thereby obtaining the target spectral distribution range value; a sixth determining module, used to determine the frequency jitter range value of the fundamental wave when the target spectral distribution range value is equal to the frequency of the fundamental wave, thereby obtaining the target frequency jitter range value; and a control module, used to control the fundamental wave to perform frequency jitter according to the target frequency jitter range value to attenuate the target electromagnetic interference signal.

[0080] Optionally, in the electromagnetic interference processing apparatus provided in the embodiments of this application, the fourth determining module includes a determining submodule. The determining submodule is used to determine the target harmonic number corresponding to the frequency of the target electromagnetic interference signal, including: a first calculation submodule, used to calculate the ratio of the frequency of the target electromagnetic interference information to the frequency of the fundamental wave; and a second calculation submodule, used to round the ratio and determine the rounded value as the target harmonic number.

[0081] Optionally, in the electromagnetic interference processing apparatus provided in the embodiments of this application, the apparatus further includes: a calculation unit, configured to calculate the ratio of the frequency of the target electromagnetic interference information to the frequency of the fundamental wave after the control fundamental wave is frequency-dithered according to the target frequency dithering range value to attenuate the target electromagnetic interference signal, thereby obtaining an updated third frequency dithering parameter; a judgment unit, configured to determine whether all target electromagnetic interference signals are attenuated when the control fundamental wave is frequency-dithered based on the updated third frequency dithering parameter; and a third determination unit, configured to determine the amplitude value of the target electromagnetic interference signal to be attenuated if all target electromagnetic interference signals are not attenuated.

[0082] The aforementioned electromagnetic interference processing device includes a processor and a memory. The first determining unit 10, the second determining unit 20, and the control unit 30 are all stored in the memory as program units. The processor executes the aforementioned program units stored in the memory to realize the corresponding functions.

[0083] The processor contains a kernel, which retrieves the corresponding program units from memory. One or more kernels can be configured, and adjusting kernel parameters can address the problem in related technologies where it is difficult to effectively attenuate electromagnetic interference signals by quantitatively controlling the frequency jitter of the fundamental wave.

[0084] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0085] This application also provides a non-volatile storage medium, which includes a stored program, wherein the program, when running, controls the device where the non-volatile storage medium is located to perform an electromagnetic interference processing method.

[0086] This application also provides an electronic device comprising a processor and a memory; the memory stores computer-readable instructions, and the processor executes the computer-readable instructions, wherein the computer-readable instructions, when executed, perform an electromagnetic interference processing method. The electronic device described herein may be a server, PC, PAD, mobile phone, etc.

[0087] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0088] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0089] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0090] These computer program instructions may also be embodied in a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable apparatus for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0091] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0092] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0093] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0094] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0095] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A method for processing electromagnetic interference signals, characterized in that, include: Determine the bandwidth of the receiver for electromagnetic interference signals; The spectral distribution range of the harmonics of the fundamental wave during frequency jitter is obtained, and the frequency jitter parameters of the fundamental wave are determined based on the frequency of the fundamental wave, the spectral distribution range of the harmonics, and the bandwidth of the receiver. The fundamental wave is controlled to perform frequency jitter based on the frequency jitter parameters in order to attenuate the target electromagnetic interference signal, wherein the target electromagnetic interference signal is the electromagnetic interference signal received by the receiver; The method of controlling the fundamental wave to perform frequency jitter based on the frequency jitter parameter to attenuate the target electromagnetic interference signal includes: determining the frequency of the target electromagnetic interference information and determining the target harmonic order corresponding to the frequency of the target electromagnetic interference signal, wherein the target harmonic order is the harmonic order corresponding to the attenuation of the target electromagnetic interference signal by the fundamental wave through frequency jitter; determining the target harmonic order as the updated second frequency jitter parameter and determining the spectral distribution range value of the harmonic corresponding to the updated second frequency jitter parameter to obtain the target spectral distribution range value; determining the frequency jitter range value of the fundamental wave when the target spectral distribution range value is equal to the frequency of the fundamental wave to obtain the target frequency jitter range value; and controlling the fundamental wave to perform frequency jitter according to the target frequency jitter range value to attenuate the target electromagnetic interference signal. The determination of the target harmonic order corresponding to the frequency of the target electromagnetic interference signal includes: calculating the ratio of the frequency of the target electromagnetic interference information to the frequency of the fundamental wave; rounding the ratio and determining the rounded value as the target harmonic order; The formula for calculating the target harmonic order is: ,in, The target harmonic order, The frequency of the target electromagnetic interference information. The frequency of the fundamental wave; The target spectral distribution range value is When the target spectral distribution range value is equal to the frequency of the fundamental wave, the following condition is satisfied: ; The calculated target frequency jitter range value is: .

2. The method according to claim 1, characterized in that, Determining the frequency jitter parameter of the fundamental wave based on the fundamental wave frequency, the spectral distribution range of the harmonics, and the bandwidth of the receiver includes: The harmonic order is obtained by determining the harmonic order corresponding to the range of the harmonic spectrum distribution being equal to the bandwidth of the receiver; Obtain a preset number of harmonic frequencies after the first harmonic frequency to obtain a first harmonic frequency set, and determine any one harmonic frequency in the first harmonic frequency set as a first frequency jitter parameter, wherein the first frequency jitter parameter is used to indicate that the frequency jitter of the fundamental wave begins to attenuate the target electromagnetic interference signal.

3. The method according to claim 1, characterized in that, Determining the frequency jitter parameter of the fundamental wave based on the fundamental wave frequency, the spectral distribution range of the harmonics, and the bandwidth of the receiver includes: The second harmonic order is obtained by determining the harmonic order corresponding to the frequency of the fundamental wave when the spectral distribution range of the harmonic is equal to that of the fundamental wave. Obtain a preset number of harmonic numbers after the second harmonic number to obtain a second harmonic number set, and determine any one harmonic number in the second harmonic number set as a second frequency jitter parameter, wherein the second frequency jitter parameter is used to indicate that the frequency jitter of the fundamental wave has reached the maximum attenuation of the target electromagnetic interference signal.

4. The method according to claim 3, characterized in that, Determining the frequency jitter parameter of the fundamental wave based on the fundamental wave frequency, the spectral distribution range of the harmonics, and the bandwidth of the receiver includes: The ratio of the receiver's bandwidth to the fundamental frequency is calculated, and the ratio is determined as a third frequency jitter parameter, wherein the third frequency jitter parameter is used to indicate the maximum attenuation of the target electromagnetic interference signal by the frequency jitter of the fundamental wave.

5. The method according to claim 1, characterized in that, After controlling the fundamental frequency to dither according to the target frequency dithering range value to attenuate the target electromagnetic interference signal, the method further includes: The ratio of the frequency of the target electromagnetic interference information to the frequency of the fundamental wave is calculated to obtain the updated third frequency jitter parameter; Determine whether all target electromagnetic interference signals are attenuated when the fundamental wave is controlled to perform frequency jitter based on the updated third frequency jitter parameters; Without attenuating all of the target electromagnetic interference signals, determine the amplitude value of the target electromagnetic interference signal to be attenuated.

6. A processing device for electromagnetic interference signals, characterized in that, include: The first determining unit is used to determine the bandwidth of the receiver for electromagnetic interference signals; The second determining unit is used to obtain the spectral distribution range value of the harmonics when the fundamental wave is jittered, and to determine the frequency jitter parameter of the fundamental wave based on the frequency of the fundamental wave, the spectral distribution range value of the harmonics and the bandwidth of the receiver. A control unit is used to control the fundamental wave to perform frequency jittering based on the frequency jittering parameters in order to attenuate the target electromagnetic interference signal, wherein the target electromagnetic interference signal is the electromagnetic interference signal received by the receiver; The second determining unit includes: a fourth determining module, used to determine the frequency of the target electromagnetic interference information and determine the target harmonic number corresponding to the frequency of the target electromagnetic interference signal, wherein the target harmonic number is the harmonic number corresponding to the attenuation of the target electromagnetic interference signal by the fundamental wave through frequency dithering; a fifth determining module, used to determine the target harmonic number as an updated second frequency dithering parameter and determine the spectral distribution range value of the harmonic corresponding to the updated second frequency dithering parameter, thereby obtaining a target spectral distribution range value; a sixth determining module, used to determine the frequency dithering range value of the fundamental wave when the target spectral distribution range value is equal to the frequency of the fundamental wave, thereby obtaining a target frequency dithering range value; and a control module, used to control the fundamental wave to perform frequency dithering according to the target frequency dithering range value to attenuate the target electromagnetic interference signal; The fourth determining module includes: a first calculation submodule, used to calculate the ratio of the frequency of the target electromagnetic interference information to the frequency of the fundamental wave; and a second calculation submodule, used to round the ratio and determine the rounded value as the target harmonic order. The formula for calculating the target harmonic order is: ,in, The target harmonic order, The frequency of the target electromagnetic interference information. The frequency of the fundamental wave; The target spectral distribution range value is When the target spectral distribution range value is equal to the frequency of the fundamental wave, the following condition is satisfied: ; The calculated target frequency jitter range value is: .

7. The apparatus according to claim 6, characterized in that, The second determining unit includes: The first determining module is used to determine the harmonic order when the spectral distribution range of the harmonic is equal to the bandwidth of the receiver, and obtain the first harmonic order; The first acquisition module is used to acquire a preset number of harmonic frequencies after the first harmonic frequency to obtain a first harmonic frequency set, and to determine any one harmonic frequency in the first harmonic frequency set as a first frequency jitter parameter, wherein the first frequency jitter parameter is used to indicate that the frequency jitter of the fundamental wave begins to attenuate the target electromagnetic interference signal.

8. The apparatus according to claim 6, characterized in that, The second determining unit further includes: The second determining module is used to determine the harmonic order when the spectral distribution range of the harmonic is equal to the frequency of the fundamental wave, and to obtain the second harmonic order; The second acquisition module is used to acquire a preset number of harmonic numbers after the second harmonic number to obtain a second harmonic number set, and to determine any one harmonic number in the second harmonic number set as a second frequency jitter parameter, wherein the second frequency jitter parameter is used to indicate that the frequency jitter of the fundamental wave has reached the maximum attenuation of the target electromagnetic interference signal.

9. The apparatus according to claim 6, characterized in that, The second determining unit further includes: The third determining module is used to calculate the ratio of the receiver's bandwidth to the fundamental frequency, and to determine the ratio as a third frequency jitter parameter, wherein the third frequency jitter parameter is used to indicate the maximum attenuation of the target electromagnetic interference signal by the frequency jitter of the fundamental wave.

10. A non-volatile storage medium, characterized in that, The non-volatile storage medium includes a stored program, wherein when the program is executed, it controls the device where the non-volatile storage medium is located to perform the electromagnetic interference signal processing method according to any one of claims 1 to 5.

11. An electronic device, characterized in that, The device includes a processor and a memory, the memory storing computer-readable instructions, and the processor executing the computer-readable instructions, wherein the computer-readable instructions, when executed, perform the electromagnetic interference signal processing method according to any one of claims 1 to 5.

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