A low interference filtering device for radio frequency system

Abstract

The present invention discloses a low-interference filtering device for a radio frequency system, which relates to the field of communication technology, including: establishing a noise signal frequency database of the operating environment of the radio frequency system; determining the operating environment of the current radio frequency system group, recorded as the real-time environment; retrieving corresponding environmental noise signal frequency data from the operating environment noise signal frequency database based on the real-time operating environment; generating the optimal radio frequency system communication frequency based on the radio frequency system environmental noise signal frequency data; obtaining the working state of the radio frequency system in real time, and intelligently calculating the filtering frequency of the radio frequency system based on the working state of the radio frequency system. The advantages of the present invention are: combining the use environment of the radio frequency system and the actual operating state of the radio frequency system to comprehensively analyze and optimize the radio frequency system frequency, which can effectively improve the anti-interference ability of the radio frequency system during communication and ensure the stability of the radio frequency system communication.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a low-interference filtering device for a radio frequency system. Background Art

[0002] Radio frequency identification technology uses radio waves to quickly exchange and store information without contact, combines wireless communication with data access technology, and then connects to the database system to achieve non-contact two-way communication, thereby achieving the purpose of identification and data exchange, connecting an extremely complex system in series. In the identification system, the reading, writing and communication of electronic tags are achieved through radio waves. According to the communication distance, it can be divided into near field and far field. For this reason, the data exchange method between the read / write device and the electronic tag is also correspondingly divided into load modulation and backscatter modulation.

[0003] The operating frequency of the RF system is an important factor affecting the communication quality between RF systems. The existing technology lacks a RF system frequency filtering method that conducts a comprehensive analysis based on the RF system usage environment and the actual operating status of the RF system. As a result, when the RF system is working, it is difficult to output communication at the optimized frequency, resulting in unstable communication connection status between RF systems. Summary of the invention

[0004] In order to solve the above technical problems, a low-interference filtering device for a radio frequency system is provided. The technical solution solves the problem that the above-mentioned prior art lacks a set of radio frequency system frequency filtering methods that comprehensively analyze the radio frequency system usage environment and the actual operating status of the radio frequency system, resulting in the radio frequency system being difficult to output communication at the optimized frequency when working, resulting in unstable communication connection status between radio frequency systems.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0006] A low-interference filtering device for a radio frequency system, comprising:

[0007] A noise signal data analysis module, wherein the noise signal data analysis module is used to establish a noise signal frequency database of the operating environment of the radio frequency system;

[0008] An operating environment setting module, the operating environment setting module is used to determine the current operating environment of the radio frequency system group, recorded as a real-time environment;

[0009] An optimal frequency calculation module, the optimal frequency calculation module is electrically connected to the noise signal data analysis module and the operating environment setting module, and the optimal frequency calculation module is used to retrieve corresponding environmental noise signal frequency data from the operating environment noise signal frequency database based on the real-time operating environment, and generate an optimal RF system communication frequency based on the RF system environmental noise signal frequency data;

[0010] A frequency adjustment module, the frequency adjustment module is electrically connected to the optimal frequency calculation module, and the frequency adjustment module is used to obtain the working state of the radio frequency system in real time, intelligently calculate the filtering frequency of the radio frequency system based on the working state of the radio frequency system, and filter the working frequency of the radio frequency system according to the filtering frequency;

[0011] An optimal frequency calculation unit, the optimal frequency calculation unit is used to obtain a median value of an available communication frequency range of the current radio frequency system as an optimal communication frequency;

[0012] An environmental noise signal analysis unit, the environmental noise signal analysis unit is used to establish a radio frequency system communication frequency anti-interference model based on the optimal communication frequency and the environmental noise signal frequency data;

[0013] A screening unit, the screening unit is used to screen out a communication frequency when the anti-interference model of the communication frequency of the radio frequency system takes a maximum value in the available communication frequency range of the radio frequency system, as the optimal communication frequency of the radio frequency system;

[0014] A monitoring unit, the monitoring unit is used to obtain the actual operating frequency of the radio frequency system in real time, analyze and process the actual operating frequency of the radio frequency system, and obtain the actual operating frequency-time variation curve of the radio frequency system;

[0015] The PID calculation unit is used to calculate the filter frequency of the radio frequency system through a frequency correction formula based on the actual working frequency-time variation curve of the radio frequency system.

[0016] Preferably, the establishing of the frequency database of noise signals in the operating environment of the radio frequency system specifically includes:

[0017] Determine the available communication frequency range of the current RF system;

[0018] Real-time monitoring and collection of radio wave noise signals in different environments to obtain initial noise signal collection data;

[0019] Screening the initial noise signal acquisition data, determining the radio wave noise signal that appears within the available communication frequency range of the radio frequency system, and recording it as the interference radio wave noise signal;

[0020] Calculate the proportion of each frequency of the noise signal in the interference radio wave noise signal in all the initial noise signal collection data;

[0021] Based on the proportion of each frequency of the noise signal in the interference radio wave noise signal in all the initial noise signal collection data, the weight proportion of each frequency of the noise signal in the interference radio wave noise signal is analyzed and calculated;

[0022] The frequency of the interference wave noise signal is used as the horizontal axis, and the weight ratio of the noise signal of each frequency in the interference wave noise signal is used as the vertical axis to establish the interference wave noise signal distribution change curve, and the interference wave noise signal distribution change curve is used as the operating environment noise signal frequency data;

[0023] The operating environment noise signal frequency data under multiple different operating environments are obtained, and the operating environment noise signal frequency database of the RF system is obtained through aggregation.

[0024] Preferably, the analyzing and calculating the weight proportion of the noise signal of each frequency in the interference radio wave noise signal based on the proportion of the noise signal of each frequency in all the initial noise signal collection data specifically includes:

[0025] Obtain the proportion of all interfering radio wave noise signals in all initial noise signal collection data, and record it as the total proportion of influencing noise signals;

[0026] The weight ratio of the noise signal of each frequency in the interference radio wave noise signal is calculated according to the weight ratio calculation formula;

[0027] The weight ratio calculation formula is as follows:

[0028]

[0029] Where P(z) is the weight ratio of the noise signal with the interference wave noise signal frequency z, Q(z) is the ratio of the noise signal with the interference wave noise signal frequency z in all the initial noise signal acquisition data, Q 总 To affect the total noise ratio.

[0030] Preferably, the generating of the optimal radio frequency system communication frequency based on the radio frequency system environmental noise signal frequency data specifically includes:

[0031] Obtaining a median value of an available communication frequency range of the current radio frequency system as an optimal communication frequency;

[0032] Based on the optimal communication frequency and the ambient noise signal frequency data, a radio frequency system communication frequency anti-interference model is established, wherein the radio frequency system communication frequency anti-interference model takes the radio frequency system communication frequency as input and takes the anti-interference index of the communication frequency as output;

[0033] The communication frequency at which the anti-interference model of the communication frequency of the radio frequency system takes the maximum value is selected from the available communication frequency range of the radio frequency system as the optimal communication frequency of the radio frequency system;

[0034] The expression of the radio frequency system communication frequency anti-interference model is:

[0035]

[0036] Where W d (f) is the anti-interference index when the communication frequency is f, f0 is the lower limit of the available communication frequency range of the RF system, f1 is the upper limit of the available communication frequency range of the RF system, P(z) is the function expression of the distribution change curve of the interference wave noise signal, f m The best communication frequency.

[0037] Preferably, the real-time acquisition of the working state of the radio frequency system and intelligent calculation of the filtering frequency of the radio frequency system based on the working state of the radio frequency system specifically includes:

[0038] Acquire the actual working frequency of the RF system in real time, analyze and process the actual working frequency of the RF system, and obtain the actual working frequency-time variation curve of the RF system;

[0039] Based on the actual operating frequency-time variation curve of the RF system, the filtering frequency of the RF system is calculated using a frequency correction formula.

[0040] Preferably, the frequency correction formula is:

[0041]

[0042] Where u(t) is the filtering frequency of the RF system, f s (t) is the actual working frequency-time variation curve expression of the RF system, f b is the optimal RF system communication frequency, T t is the time integration constant, T D is the time differential constant.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] The present invention detects the radio wave noise in the operating environment of the radio frequency system, determines the distribution of the radio wave noise in the environment, and comprehensively analyzes the radio wave noise distribution in the environment and the available communication frequency range of the radio frequency system to obtain the communication frequency of the radio frequency system as the optimal communication frequency of the radio frequency system. This frequency is used as the reference frequency for communication, which can effectively ensure that the interference of the noise signal radio waves in the environment is minimized when the radio frequency system communicates, and ensure the communication stability of the radio frequency system when it is in use.

[0045] The present invention adopts PID algorithm to adjust the real-time operating frequency of the radio frequency system, and obtains the filtering frequency of the radio frequency system by calculating the frequency actually output by the radio frequency system according to the functional relationship of proportion, integration and differentiation. The operating frequency of the output radio frequency system is adjusted and controlled according to the filtering frequency. In this way, the stability of the output frequency during the operation of the radio frequency system can be effectively guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 A flow chart of a low-interference filtering device for a radio frequency system proposed by the present invention;

[0047] Figure 2 A flow chart of the method for establishing a frequency database of noise signals in the operating environment of a radio frequency system in the present invention;

[0048] Figure 3 A flow chart of a method for calculating the weight ratio of noise signals of each frequency in an interfering radio wave noise signal in the present invention;

[0049] Figure 4 A flow chart of a method for generating an optimal radio frequency system communication frequency in the present invention;

[0050] Figure 5 The flowchart of the method for calculating the filtering frequency of the radio frequency system in the present invention is shown in FIG. DETAILED DESCRIPTION

[0051] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0052] Reference Figure 1 As shown, a low interference filtering device for a radio frequency system comprises:

[0053] A noise signal data analysis module, wherein the noise signal data analysis module is used to establish a noise signal frequency database of the operating environment of the radio frequency system;

[0054] An operating environment setting module, the operating environment setting module is used to determine the current operating environment of the radio frequency system group, recorded as a real-time environment;

[0055] An optimal frequency calculation module, the optimal frequency calculation module is electrically connected to the noise signal data analysis module and the operating environment setting module, and the optimal frequency calculation module is used to retrieve corresponding environmental noise signal frequency data from the operating environment noise signal frequency database based on the real-time operating environment and based on the RF system environmental noise signal frequency data, to generate an optimal RF system communication frequency;

[0056] A frequency adjustment module, the frequency adjustment module is electrically connected to the optimal frequency calculation module, and the frequency adjustment module is used to obtain the working state of the radio frequency system in real time, intelligently calculate the filtering frequency of the radio frequency system based on the working state of the radio frequency system, and filter the working frequency of the radio frequency system according to the filtering frequency;

[0057] An optimal frequency calculation unit, the optimal frequency calculation unit is used to obtain a median value of an available communication frequency range of the current radio frequency system as an optimal communication frequency;

[0058] An environmental noise signal analysis unit, the environmental noise signal analysis unit is used to establish a radio frequency system communication frequency anti-interference model based on the optimal communication frequency and the environmental noise signal frequency data;

[0059] A screening unit, the screening unit is used to screen out a communication frequency when the anti-interference model of the communication frequency of the radio frequency system takes a maximum value in the available communication frequency range of the radio frequency system, as the optimal communication frequency of the radio frequency system;

[0060] A monitoring unit, the monitoring unit is used to obtain the actual operating frequency of the radio frequency system in real time, analyze and process the actual operating frequency of the radio frequency system, and obtain the actual operating frequency-time variation curve of the radio frequency system;

[0061] The PID calculation unit is used to calculate the filter frequency of the radio frequency system through a frequency correction formula based on the actual working frequency-time variation curve of the radio frequency system.

[0062] This solution is based on the detection of radio wave noise signals in the operating environment of the RF system, determines the distribution of radio wave noise in the environment, and comprehensively analyzes the radio wave noise distribution in the environment and the available communication frequency range of the RF system. The RF system communication frequency that is least affected by the radio wave noise in the environment is used as the optimal RF system communication frequency. This frequency is used as the reference frequency for communication, which can effectively ensure that the RF system minimizes the interference of noise signal radio waves in the environment when communicating.

[0063] Reference Figure 2 As shown, establishing a noise signal frequency database for the operating environment of the RF system specifically includes:

[0064] Determine the available communication frequency range of the current RF system;

[0065] Real-time monitoring and collection of radio wave noise signals in different environments to obtain initial noise signal collection data;

[0066] Screening the initial noise signal acquisition data, determining the radio wave noise signal that appears within the available communication frequency range of the radio frequency system, and recording it as the interference radio wave noise signal;

[0067] Calculate the proportion of each frequency of the noise signal in the interference radio wave noise signal in all the initial noise signal collection data;

[0068] Based on the proportion of each frequency of the noise signal in the interference radio wave noise signal in all the initial noise signal collection data, the weight proportion of each frequency of the noise signal in the interference radio wave noise signal is analyzed and calculated;

[0069] The frequency of the interference wave noise signal is used as the horizontal axis, and the weight ratio of the noise signal of each frequency in the interference wave noise signal is used as the vertical axis to establish the interference wave noise signal distribution change curve, and the interference wave noise signal distribution change curve is used as the operating environment noise signal frequency data;

[0070] The operating environment noise signal frequency data under multiple different operating environments are obtained, and the operating environment noise signal frequency database of the RF system is obtained through aggregation.

[0071] Reference Figure 3 As shown, based on the proportion of each frequency noise signal in the interference radio wave noise signal in all the initial noise signal collection data, the weight proportion of each frequency noise signal in the interference radio wave noise signal is analyzed and calculated, which specifically includes:

[0072] Obtain the proportion of all interfering radio wave noise signals in all initial noise signal collection data, and record it as the total proportion of influencing noise signals;

[0073] The weight ratio of the noise signal of each frequency in the interference radio wave noise signal is calculated according to the weight ratio calculation formula;

[0074] The specific calculation formula for weight ratio is:

[0075]

[0076] Where P(z) is the weight ratio of the noise signal with the interference wave noise signal frequency z, Q(z) is the ratio of the noise signal with the interference wave noise signal frequency z in all the initial noise signal acquisition data, Q 总 To affect the total noise ratio.

[0077] It is understandable that there are a large number of radio waves in the environment. Therefore, when setting the communication frequency of the RF system, it is necessary to avoid the frequency band where there are noise signal radio waves in the environment. Based on this, this solution calculates the distribution of the proportion of noise signal radio waves within the available frequency range of the RF system, and establishes a distribution change curve of interference wave noise signals, which provides a data basis for the subsequent determination of the optimal communication frequency with the strongest anti-interference ability of the RF system.

[0078] Reference Figure 4 As shown, based on the frequency data of the ambient noise signal of the RF system, generating the optimal RF system communication frequency specifically includes:

[0079] Obtaining a median value of an available communication frequency range of the current radio frequency system as an optimal communication frequency;

[0080] Based on the optimal communication frequency and the frequency data of the environmental noise signal, a radio frequency system communication frequency anti-interference model is established. The radio frequency system communication frequency anti-interference model takes the radio frequency system communication frequency as input and takes the anti-interference index of the communication frequency as output;

[0081] The communication frequency at which the anti-interference model of the communication frequency of the radio frequency system takes the maximum value is selected from the available communication frequency range of the radio frequency system as the optimal communication frequency of the radio frequency system;

[0082] The expression of the anti-interference model of the RF system communication frequency is:

[0083]

[0084] Where W d (f) is the anti-interference index when the communication frequency is f, f0 is the lower limit of the available communication frequency range of the RF system, f1 is the upper limit of the available communication frequency range of the RF system, P(z) is the function expression of the distribution change curve of the interference wave noise signal, f m The best communication frequency.

[0085] It can be understood that the median value of the available communication frequency range of the RF system is the optimal frequency to ensure the stability of the RF system communication. Based on this, the closer the communication frequency is to the median value of the available communication frequency range, the better the communication frequency. In addition, in order to ensure that the communication between RF systems is not interfered with by the radio wave noise signals in the environment, when setting the communication frequency, it is necessary to stay away from the radio wave noise frequency with a large weight ratio. Based on this, an anti-interference model of the RF system communication frequency is established. By comprehensively considering the communication frequency, the radio wave noise frequency and the optimal communication frequency, the communication frequency with the strongest anti-interference ability is comprehensively screened out as the optimal RF system communication frequency, which can effectively ensure the stability of the RF system communication.

[0086] Reference Figure 5 As shown, the working status of the RF system is obtained in real time, and the filtering frequency of the RF system is intelligently calculated based on the working status of the RF system. Specifically, the following are included:

[0087] Acquire the actual working frequency of the RF system in real time, analyze and process the actual working frequency of the RF system, and obtain the actual working frequency-time variation curve of the RF system;

[0088] Based on the actual working frequency-time variation curve of the RF system, the filtering frequency of the RF system is calculated by the frequency correction formula;

[0089] The frequency correction formula is:

[0090]

[0091] Where u(t) is the filtering frequency of the RF system, f s (t) is the actual working frequency-time variation curve expression of the RF system, f b is the optimal RF system communication frequency, T t is the time integration constant, T D is the time differential constant.

[0092] The PID algorithm is used to adjust the real-time operating frequency of the RF system. The filter frequency of the RF system is obtained by calculating the proportional, integral and differential functional relationship based on the actual output frequency of the RF system. The output operating frequency of the RF system is adjusted and controlled according to the filter frequency. This can effectively correct the deviation of the operating frequency of the RF system, so that the operating frequency of the RF system reaches a stable state and maintains the efficient and stable output of the RF system.

[0093] The use process of the low-interference filtering device for the radio frequency system is as follows:

[0094] Step 1: The noise signal data analysis module establishes a noise signal frequency database for the RF system operating environment;

[0095] Step 2: The operating environment setting module is used to determine the current operating environment of the RF system group, which is recorded as the real-time environment. At the same time, the optimal frequency calculation module retrieves the corresponding environmental noise signal frequency data from the operating environment noise signal frequency database based on the real-time operating environment;

[0096] Step 3: The optimal frequency calculation unit is used to obtain the median value of the available communication frequency range of the current radio frequency system as the optimal communication frequency;

[0097] Step 4: The environmental noise signal analysis unit establishes an anti-interference model for the communication frequency of the RF system based on the optimal communication frequency and the environmental noise signal frequency data;

[0098] Step 5: The screening unit screens out the communication frequency when the anti-interference model of the radio frequency system communication frequency takes the maximum value in the available communication frequency range of the radio frequency system, as the optimal radio frequency system communication frequency;

[0099] Step 6: The monitoring unit obtains the actual operating frequency of the radio frequency system in real time, analyzes and processes the actual operating frequency of the radio frequency system, and obtains the actual operating frequency-time variation curve of the radio frequency system;

[0100] Step 7: The PID calculation unit calculates the filter frequency of the RF system through a frequency correction formula based on the actual operating frequency-time variation curve of the RF system.

[0101] Furthermore, the present solution also proposes a computer-readable storage medium on which a computer-readable program is stored. When the computer-readable program is called, the above-mentioned low-interference filtering device for a radio frequency system is run.

[0102] It is understandable that the storage medium suitable for the above method can be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape; an optical medium, such as a DVD; or a semiconductor medium, such as a solid state drive (SSD).

[0103] To sum up, the advantages of the present invention are: by comprehensively analyzing and adjusting the frequency of the RF system in combination with the use environment of the RF system and the actual operating status of the RF system, the anti-interference ability of the RF system during communication can be effectively improved, and the stability of the RF system communication can be ensured.

[0104] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A low interference filtering device for a radio frequency system, characterized in that: include: A noise signal data analysis module, wherein the noise signal data analysis module is used to establish a noise signal frequency database of the operating environment of the radio frequency system; An operating environment setting module, the operating environment setting module is used to determine the current operating environment of the radio frequency system group, recorded as a real-time environment; An optimal frequency calculation module, the optimal frequency calculation module is electrically connected to the noise signal data analysis module and the operating environment setting module, and the optimal frequency calculation module is used to retrieve corresponding environmental noise signal frequency data from the operating environment noise signal frequency database based on the real-time operating environment, and generate an optimal RF system communication frequency based on the RF system environmental noise signal frequency data; A frequency adjustment module, the frequency adjustment module is electrically connected to the optimal frequency calculation module, and the frequency adjustment module is used to obtain the working state of the radio frequency system in real time, intelligently calculate the filtering frequency of the radio frequency system based on the working state of the radio frequency system, and filter the working frequency of the radio frequency system according to the filtering frequency; The optimal frequency calculation module comprises: An optimal frequency calculation unit, the optimal frequency calculation unit is used to obtain a median value of an available communication frequency range of the current radio frequency system as an optimal communication frequency; An environmental noise signal analysis unit, the environmental noise signal analysis unit is used to establish a radio frequency system communication frequency anti-interference model based on the optimal communication frequency and the environmental noise signal frequency data; A screening unit, the screening unit is used to screen out a communication frequency when the anti-interference model of the communication frequency of the radio frequency system takes a maximum value in the available communication frequency range of the radio frequency system, as the optimal communication frequency of the radio frequency system; The frequency adjustment module comprises: A monitoring unit, the monitoring unit is used to obtain the actual operating frequency of the radio frequency system in real time, analyze and process the actual operating frequency of the radio frequency system, and obtain the actual operating frequency-time variation curve of the radio frequency system; A PID calculation unit, wherein the PID calculation unit is used to calculate the filter frequency of the radio frequency system through a frequency correction formula based on an actual working frequency-time variation curve of the radio frequency system; The generating of the optimal radio frequency system communication frequency based on the radio frequency system environmental noise signal frequency data specifically includes: Obtaining a median value of an available communication frequency range of the current radio frequency system as an optimal communication frequency; Based on the optimal communication frequency and the ambient noise signal frequency data, a radio frequency system communication frequency anti-interference model is established, wherein the radio frequency system communication frequency anti-interference model takes the radio frequency system communication frequency as input and takes the anti-interference index of the communication frequency as output; The communication frequency at which the anti-interference model of the communication frequency of the radio frequency system takes the maximum value is selected from the available communication frequency range of the radio frequency system as the optimal communication frequency of the radio frequency system; The expression of the radio frequency system communication frequency anti-interference model is: Where W d (f) is the anti-interference index when the communication frequency is f, f0 is the lower limit of the available communication frequency range of the RF system, f1 is the upper limit of the available communication frequency range of the RF system, P(z) is the function expression of the distribution change curve of the interference wave noise signal, f m For the best communication frequency; The real-time acquisition of the working state of the radio frequency system and the intelligent calculation of the filtering frequency of the radio frequency system based on the working state of the radio frequency system specifically include: Acquire the actual working frequency of the RF system in real time, analyze and process the actual working frequency of the RF system, and obtain the actual working frequency-time variation curve of the RF system; Based on the actual working frequency-time variation curve of the RF system, the filtering frequency of the RF system is calculated by the frequency correction formula; The frequency correction formula is: Where u(t) is the filtering frequency of the RF system, f s (t) is the actual working frequency-time variation curve expression of the RF system, f b is the optimal RF system communication frequency, T t is the time integration constant, T D is the time differential constant.

2. A low interference filtering device for a radio frequency system according to claim 1, characterized in that: The establishment of a noise signal frequency database for the radio frequency system operating environment specifically includes: Determine the available communication frequency range of the current RF system; Real-time monitoring and collection of radio wave noise signals in different environments to obtain initial noise signal collection data; Screening the initial noise signal acquisition data, determining the radio wave noise signal that appears within the available communication frequency range of the radio frequency system, and recording it as the interference radio wave noise signal; Calculate the proportion of each frequency of the noise signal in the interference radio wave noise signal in all the initial noise signal collection data; Based on the proportion of each frequency of the noise signal in the interference radio wave noise signal in all the initial noise signal collection data, the weight proportion of each frequency of the noise signal in the interference radio wave noise signal is analyzed and calculated; The frequency of the interference wave noise signal is used as the horizontal axis, and the weight ratio of the noise signal of each frequency in the interference wave noise signal is used as the vertical axis to establish the interference wave noise signal distribution change curve, and the interference wave noise signal distribution change curve is used as the operating environment noise signal frequency data; The operating environment noise signal frequency data under multiple different operating environments are obtained, and the operating environment noise signal frequency database of the RF system is obtained through aggregation.

3. A low interference filtering device for a radio frequency system according to claim 2, characterized in that: The analyzing and calculating the weight proportion of the noise signal of each frequency in the interference wave noise signal based on the proportion of the noise signal of each frequency in all the initial noise signal collection data specifically includes: Obtain the proportion of all interfering radio wave noise signals in all initial noise signal collection data, and record it as the total proportion of influencing noise signals; The weight ratio of the noise signal of each frequency in the interference radio wave noise signal is calculated according to the weight ratio calculation formula; The weight ratio calculation formula is as follows: Where P(z) is the weight ratio of the noise signal with the interference wave noise signal frequency z, Q(z) is the ratio of the noise signal with the interference wave noise signal frequency z in all the initial noise signal acquisition data, Q 总 To affect the total noise ratio.

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