Wide dynamic range frequency selection ultrahigh frequency conditioning method and system based on logarithmic detection

Abstract

The invention discloses a wide dynamic range frequency-selecting ultrahigh frequency conditioning method and system based on logarithmic detection, and relates to the technical field of high-voltage electrical equipment partial discharge detection, and the method comprises the steps: capturing a signal, and transmitting the signal to a conditioning circuit; a required path is controlled to be conducted based on the logic control circuit; filtering out-of-band noise signals and carrying out logarithmic detection. The circuit structure is clear and simple, ultrahigh frequency signals are analyzed by selecting different frequency band ranges, external interference is effectively removed, the detection sensitivity is higher, and the detection result is more accurate. The design of logarithmic detection after band-pass filtering avoids the problem of output nonlinearity caused by large signal input outside the frequency band, and effectively protects the device. According to the frequency band range characteristics of interference signals, a corresponding filter network is arranged on the frequency-selecting switch, and the detection frequency band is changed according to the field environmental noise. The signal is subjected to second band-pass filtering before entering the logarithmic detection circuit, so that the noise coefficient of the whole link is effectively reduced, and the influence of a noise signal newly generated by the conditioning circuit is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of partial discharge detection of high-voltage electrical equipment, and specifically to a wide-dynamic-range frequency-selective UHF conditioning method and system based on logarithmic detection. Background Art

[0002] Partial discharge detection is currently one of the important preventive detection items to ensure the safe operation of high-voltage power equipment. High-voltage equipment such as transformers, as important components in the power system, their health levels and operating states are closely related to the safety and stability of the power grid operation. The deterioration of the internal partial insulation performance is the main cause of high-voltage equipment failures. Before this deterioration develops to penetrate the insulating medium, partial discharges often occur in the insulating medium of the equipment. Currently, the commonly used partial discharge detection methods include ultrasonic detection method, dissolved gas analysis in oil, pulse current detection method, and ultra-high frequency (UHF) detection method, etc. The UHF detection method has the advantages of high sensitivity, strong anti-interference ability, and the ability to perform fault location, etc., and is currently the main method for partial discharge detection of high-voltage electrical equipment.

[0003] The UHF detection method obtains the internal defect situation of the equipment by detecting the high-frequency electromagnetic waves excited by the discharge defects. During detection, a UHF sensor is used to receive the UHF electromagnetic wave signals excited by partial discharges, and the collected discharge signals are analyzed and diagnosed to judge the internal defect situation of the equipment. Since the quality of the original electromagnetic wave signals received by the UHF sensor is low, containing a large amount of noise and having a low signal-to-noise ratio, they cannot be directly used for analysis and diagnosis, and the requirements for the data system are relatively high. The currently applied UHF detection method cannot take into account the adverse effects brought by the link noise coefficient and large signals outside the frequency band, and lacks the flexible setting ability for different application scenarios. Summary of the Invention

[0004] In view of the above existing problems, the present invention is proposed.

[0005] Therefore, the technical problem solved by the present invention is that the existing UHF detection method has a large amount of noise, a low signal-to-noise ratio, cannot be directly used for analysis and diagnosis, and has relatively high requirements for the data system.

[0006] To solve the above technical problem, the present invention provides the following technical solution: A wide-dynamic-range frequency-selective UHF conditioning method based on logarithmic detection, including capturing signals and transmitting them to a conditioning circuit;

[0007] Based on a logic control circuit to control the conduction of the required path;

[0008] Filter out the out-of-band noise signals and perform logarithmic detection.

[0009] As a preferred embodiment of the wide-dynamic-range frequency-selective UHF conditioning method based on logarithmic detection according to the present invention, the transmission of the captured signal to the conditioning circuit includes obtaining the electromagnetic wave signal excited by the discharge defect through the sensor antenna, and inputting the original electromagnetic wave signal into the entire conditioning circuit system through the sensor input circuit.

[0010] As a preferred embodiment of the wide-dynamic-range frequency-selective UHF conditioning method based on logarithmic detection according to the present invention, the transmission of the captured signal to the conditioning circuit includes performing band-pass filtering on the obtained initial electromagnetic wave signal and intercepting the signal.

[0011] As a preferred embodiment of the wide-dynamic-range frequency-selective UHF conditioning method based on logarithmic detection according to the present invention, the control of the required conduction path by the logic control circuit includes performing signal amplification processing on the intercepted signal to amplify the amplitude of the UHF signal.

[0012] As a preferred embodiment of the wide-dynamic-range frequency-selective UHF conditioning method based on logarithmic detection according to the present invention, the control of the required conduction path by the logic control circuit includes using the logic control circuit to control the conduction of the required path. Each of the two logic conduction circuits controls the selected channel through the high and low levels of the two input levels. The input level control methods of the logic control 1 module and the logic control 2 module are the same. When both the input level 1 and the input level 2 are low, the band-pass 1 path is controlled to conduct. When both the input level 1 and the input level 2 are high, the band-pass 4 path is controlled to conduct. When the input level 1 is high and the input level 2 is low, the band-pass 2 path is controlled to conduct. When the input level 1 is low and the input level 2 is high, the band-pass 3 path is controlled to conduct. When the conduction channels selected by the two logic control switches are the same, the corresponding channel conducts;

[0013] The input end of the logic control circuit selects 3.3v as the high-level input and 1.25v as the low-level input to obtain the UHF signal with specific interference frequency bands filtered out.

[0014] As a preferred embodiment of the wide-dynamic-range frequency-selective UHF conditioning method based on logarithmic detection according to the present invention, the logarithmic detection of filtering out the out-of-band noise signal includes performing band-pass filtering processing on the UHF signal again to filter out the out-of-band noise signals generated in each circuit and obtain a new UHF signal.

[0015] As a preferred embodiment of the wide-dynamic-range frequency-selective UHF conditioning method based on logarithmic detection according to the present invention, the logarithmic detection of filtering out the out-of-band noise signal includes performing logarithmic detection on the obtained new UHF signal, and removing the oscillation details in the original signal through the logarithmic detector while retaining the signal information of the amplitude and phase to obtain the detected signal.

[0016] Another object of the present invention is to provide a wide dynamic range frequency-selective UHF conditioning system based on logarithmic detection, which can solve the problem of a large amount of noise in the current UHF detection method by performing a second band-pass filtering.

[0017] As a preferred embodiment of the wide dynamic range frequency-selective UHF conditioning system based on logarithmic detection according to the present invention, it includes a signal capture and transmission module, a path conduction module, and a logarithmic detection module; the signal capture and transmission module is used to input the original electromagnetic wave signal into the entire conditioning circuit system and intercept the UHF signal; the path conduction module is used to conduct the required path; the logarithmic detection module is used to remove additional noise and perform logarithmic detection.

[0018] A computer device includes a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, the steps of the wide dynamic range frequency-selective UHF conditioning method based on logarithmic detection are implemented.

[0019] A computer-readable storage medium stores a computer program thereon. When the computer program is executed by a processor, the steps of the wide dynamic range frequency-selective UHF conditioning method based on logarithmic detection are implemented.

[0020] The beneficial effects of the present invention: The circuit structure of the present invention is clear and simple. It can analyze UHF signals by selecting different frequency band ranges, effectively remove external interference, make the detection sensitivity higher and the detection result more accurate. The design of performing band-pass filtering first and then logarithmic detection avoids the output nonlinearity problem caused by the input of large signals outside the frequency band and effectively protects the device. Usually, for partial discharge detection, the detection frequency band of the UHF signal generated by partial discharge is between 300 MHz and 1.5 GHz. The electromagnetic interference signals within this range mainly include TV signals (470 MHz - 958 MHz), GSM900 mobile phone signals (890 MHz - 960 MHz), GMS1800 mobile phone signals (1710 MHz - 1880 MHz), 3G network signals (1880 MHz - 2200 MHz), and WIFI signals (2412 MHz - 2472 MHz), etc. According to the characteristics of the interference signal frequency band range, a corresponding filtering network is set in the frequency-selective switch, and the detection frequency band is changed according to the on-site environmental noise, which is convenient for adjustment according to different application environments. Performing a second band-pass filtering before the signal enters the logarithmic detection circuit effectively reduces the noise coefficient of the entire link and reduces the influence of the noise signals newly generated by the conditioning circuit itself. Description of the Drawings

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 It is the overall flowchart of a wide dynamic range frequency selection UHF conditioning method based on logarithmic detection provided by the first embodiment of the present invention.

[0023] Figure 2 It is the circuit system structure block diagram of a wide dynamic range frequency selection UHF conditioning method based on logarithmic detection provided by the first embodiment of the present invention.

[0024] Figure 3 It is the high-pass filter path circuit diagram in the frequency selection switch module of a wide dynamic range frequency selection UHF conditioning method based on logarithmic detection provided by the first embodiment of the present invention.

[0025] Figure 4 It is the low-pass filter path circuit diagram in the frequency selection switch module of a wide dynamic range frequency selection UHF conditioning method based on logarithmic detection provided by the first embodiment of the present invention.

[0026] Figure 5 It is the band-stop filter path circuit diagram in the frequency selection switch module of a wide dynamic range frequency selection UHF conditioning method based on logarithmic detection provided by the first embodiment of the present invention.

[0027] Figure 6 It is the detection output diagram of a wide dynamic range frequency selection UHF conditioning method based on logarithmic detection provided by the first embodiment of the present invention.

[0028] Figure 7 It is the overall flowchart of a wide dynamic range frequency selection UHF conditioning system based on logarithmic detection provided by the third embodiment of the present invention. Specific Embodiments

[0029] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific embodiments of the present invention in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment 1, referring to Figures 1-6 , which is an embodiment of the present invention, provides a wide dynamic range frequency selection UHF conditioning method based on logarithmic detection, including:

[0031] S1: The captured signal is transmitted to the conditioning circuit.

[0032] Furthermore, as Figure 2 , the present invention relates to a very high frequency signal conditioning circuit based on logarithmic detection and applicable to wide dynamic range and wide frequency band input, including a sensor input circuit (1), a band-pass filter circuit (2), a low-noise amplifier circuit (3), a frequency selection switch circuit (4), a band-pass filter circuit (5) and a logarithmic detection circuit (6), and there is also a logic control circuit for controlling the channel selection of the frequency selection switch circuit.

[0033] It should be noted that the sensor input circuit (1) includes an input part for receiving signals from the sensor antenna and introducing them into the conditioning circuit;

[0034] The band-pass filter circuit (2) includes a series-connected low-pass filter circuit and a high-pass filter circuit;

[0035] The low-noise amplifier circuit (3) includes a filter capacitor and a low-noise radio frequency amplifier;

[0036] The frequency selection switch circuit (4) includes a radio frequency switch 1, a radio frequency switch 2 and multiple groups of filter networks; the filter network is a band-pass filter composed of a series-connected high-pass filter (band-pass 1), a low-pass filter (band-pass 2), a band-stop filter (band-pass 3) and a path (band-pass 4); multiple groups of filter networks are connected in parallel between the output end of the radio frequency switch 1 and the input end of the radio frequency switch 2;

[0037] The band-pass filter circuit (5) includes a series-connected low-pass filter circuit and a high-pass filter circuit;

[0038] The logarithmic detection circuit (6) includes a logarithmic detector.

[0039] Furthermore, the logic control circuit determines the specific on-off conditions of the four channels of the frequency selection switch circuit by controlling the high and low level combination modes of the two input ends.

[0040] The three designed paths with filtering functions in the frequency selection switch circuit are respectively: the high-pass filter (band-pass 1), the circuit design is as Figure 2 shown, including two series-connected capacitors C123, C123 and inductors L3, L4, L5 on three ground branches, and the lower frequency limit of the frequency band is 900 MHz; the low-pass filter (band-pass 2), the circuit design is as Figure 3 shown, the low-pass filter circuit is composed of two series-connected inductors L6, L7 and capacitors C125, C126, C127 on three ground branches, and the upper frequency limit of the frequency band is 900 MHz; the band-stop filter (band-pass 3), the circuit design is as Figure 4As shown, the low-pass filter circuit consists of two inductors L6 and L7 connected in series and capacitors C125, C126, and C127 on three ground branches, and the suppression frequency band ranges from 770.7 MHz to 1025 MHz.

[0041] The logic control circuit determines the specific on / off conditions of the four channels of the frequency selection switch circuit by controlling the high and low level combination modes of the two input terminals. When the input to the logic control circuit is 3.3V (±5%), it is a high-level input, and when it is grounded or there is no voltage input, it is a low-level input. When both level input channels of the logic control module are at low level, the module selects the band-pass 1 channel to conduct; when both level inputs of the logic control module are at high level, the module selects the band-pass 4 channel to conduct; when the level input 1 is at high level and the level input 2 is at low level, the corresponding module selects the band-pass 2 channel to conduct; when the level input 1 is at low level and the level input 2 is at high level, the corresponding module selects the band-pass 3 channel to conduct. When the selected conduction channels of the two logic control modules are the same, the corresponding channels conduct.

[0042] When a -40dBm power square wave is input for testing, different output curves can be obtained by selecting different channels. The output curve without a frequency selection channel is the same as the full curve of -40dBm power input, and the other curves correspond to the output situations of other respective frequency selection channels. It can be seen that the differences in the output results of the same signal for different frequency selection channels are relatively large.

[0043] S2: Based on the logic control circuit, control the conduction of the required path.

[0044] Furthermore, in this embodiment, the electromagnetic wave signal excited by the discharge defect is obtained through the sensor antenna, and the original electromagnetic wave signal is input into the entire conditioning circuit system through the sensor input circuit; the obtained original electromagnetic wave signal is subjected to band-pass filtering to intercept the ultra-high frequency signal between 300 MHz and 1500 MHz; the obtained ultra-high frequency signal is subjected to signal amplification processing to amplify the amplitude of the ultra-high frequency signal to obtain an ultra-high frequency signal that is easy to observe and process.

[0045] S3: Filter out the out-of-band noise signal and perform logarithmic detection.

[0046] Furthermore, in this embodiment, the very high frequency (VHF) signal is subjected to frequency selection processing. Each of the two logic conduction circuits controls the selected channel through the high and low levels of two input levels. The input level control modes of the logic control module 1 and the logic control module 2 are the same. When both the input level 1 and the input level 2 are at a low level, the band-pass 1 path is controlled to conduct; when both the input level 1 and the input level 2 are at a high level, the band-pass 4 path is controlled to conduct; when the input level 1 is at a high level and the input level 2 is at a low level, the band-pass 2 path is controlled to conduct; when the input level 1 is at a low level and the input level 2 is at a high level, the band-pass 3 path is controlled to conduct. When the conduction channels selected by the two logic control switches are the same, the corresponding channel conducts. The input end of the logic control circuit selects 3.3V as the high-level input and 1.25V as the low-level input. In actual implementation, 0V is selected as the low-level input. A filtering path that meets the requirements of the current scenario is obtained, and a VHF signal with specific interference frequency bands filtered out is obtained; the obtained VHF signal is subjected to band-pass filtering processing again to filter out the out-of-band noise signals that may be newly generated in the foregoing circuits, and a VHF signal with a higher signal-to-noise ratio is obtained; the obtained VHF signal is subjected to logarithmic detection, and the logarithmic detector removes the oscillation details in the original signal while retaining the signal information of the amplitude and phase, and a detection signal that is finally easy to store and process is obtained.

[0047] Embodiment 2, an embodiment of the present invention, provides a wide dynamic range frequency selection VHF conditioning method based on logarithmic detection. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through economic benefit calculation and simulation experiments.

[0048] First of all, in order to verify the effectiveness of the VHF signal conditioning system proposed in the present invention, an experiment was designed to simulate the whole process from the capture of electromagnetic wave signals excited by discharge defects to the final signal processing. The experimental setup includes a sensor antenna, a signal conditioning circuit, a band-pass filter, an amplifier, a logic control circuit, and a logarithmic detector. The electromagnetic wave signals generated and simulated in the laboratory are sent through a dedicated antenna to simulate the discharges of different types of electrical equipment.

[0049] First of all, the sensor antenna captures the electromagnetic wave signals simulated in the laboratory, and these signals are introduced into the conditioning system through the sensor input circuit. To ensure signal quality, high-sensitivity sensors and an optimized input circuit design are used, which is crucial for subsequent signal processing.

[0050] Then, the original signal passes through the designed band-pass filter, which is specifically set to only allow VHF signals from 300 MHz to 1500 MHz to pass through. This frequency band includes the vast majority of electromagnetic interference signals caused by electrical equipment defects. The filtered signal enters the amplifier, which is specially designed to increase the amplitude of the signal, making it easier to observe and process.

[0051] Thereafter, the signal undergoes frequency selection processing through a logic control circuit. This logic control circuit flexibly selects the required path through simple high and low level inputs. The frequency - selected signal is band - pass filtered again to ensure the removal of out - of - band noise that may be generated by the circuit itself.

[0052] Finally, the finely processed signal is sent to a logarithmic detector. This device effectively removes unnecessary oscillation details in the original signal while retaining the amplitude and phase information of the signal. The application of logarithmic detection significantly improves the signal processing efficiency and the overall performance of the system, making the signal easier to store and further analyze.

[0053] Through the above steps, not only the coherence and rationality of the entire signal processing are demonstrated, but also the effective conditioning of the ultra - high - frequency signal is achieved through optimized design and implementation.

[0054] Table 1 Experimental data table

[0055]

[0056] It can be seen from the comparison of the experimental data that there are obvious voltage changes in each step, which proves that the signal has been significantly improved after each processing stage. Especially the signal amplitude increase and filtering effect after amplification and frequency selection processing significantly enhance the observability and processing quality of the signal. These data not only reflect the rationality and authenticity of the experiment, but also clearly demonstrate the role and beneficial effects of the invention content.

[0057] It can be seen from the experimental data that through the ultra - high - frequency signal conditioning method of the present invention, each step of the signal from input to detection has been optimized, and the signal - to - noise ratio has been significantly improved during the continuous processing. These results not only verify the effectiveness of the invention, but also demonstrate the innovation and advantages of the present invention compared with the prior art in processing ultra - high - frequency signals. This systematic signal processing method provides a new technical approach for high - precision electromagnetic signal detection and analysis, with significant commercial application potential and scientific research value.

[0058] Example 3, referring to Figure 7 , which is an embodiment of the present invention, provides a wide - dynamic - range frequency - selection ultra - high - frequency conditioning system based on logarithmic detection, including a signal capture and transmission module, a path conduction module, and a logarithmic detection module.

[0059] Among them, the signal capture and transmission module is used to input the original electromagnetic wave signal into the entire conditioning circuit system and intercept the ultra - high - frequency signal, the path conduction module is used to conduct the required path, and the logarithmic detection module is used to remove additional noise and perform logarithmic detection.

[0060] If a function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of various embodiments of the present invention. The aforementioned storage medium includes: USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs, etc., which can store program codes of various kinds.

[0061] The logic and / or steps represented in the flowchart or described in other ways herein, for example, can be considered as a definite sequence list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch instructions from the instruction execution system, apparatus, or device and execute the instructions), or in combination with these instruction execution systems, apparatus, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by or in combination with an instruction execution system, apparatus, or device.

[0062] More specific examples (non-exhaustive list) of computer-readable media include the following: electrical connection parts with one or more wirings (electronic devices), portable computer disk cartridges (magnetic devices), random access memories (RAMs), read-only memories (ROMs), erasable programmable read-only memories (EPROMs or flash memories), optical fiber devices, and portable compact disc read-only memories (CDROMs). Additionally, a computer-readable medium can even be paper or other suitable media on which a program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other media, then editing, interpreting, or otherwise processing it as appropriate, and then storing it in a computer memory.

[0063] It should be understood that each part of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, any one or a combination of the following technologies well known in the art can be used: discrete logic circuits having logic gate circuits for implementing logic functions on data signals, application specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc. It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

[0064] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A wide dynamic range frequency selection ultra-high frequency conditioning method based on logarithmic detection, characterized in that: include: The captured signal is transmitted to the conditioning circuit; Based on the logic control circuit, the desired path is controlled to be turned on; Filter out the noise signal outside the frequency band and perform logarithmic detection.

2. The wide dynamic range frequency selection ultra-high frequency conditioning method based on logarithmic detection as claimed in claim 1, characterized in that: The transmission of the captured signal to the conditioning circuit includes acquiring the electromagnetic wave signal excited by the discharge defect through the sensor antenna, and inputting the original electromagnetic wave signal into the entire conditioning circuit system through the sensor input circuit.

3. The wide dynamic range frequency selection ultra-high frequency conditioning method based on logarithmic detection as claimed in claim 2, characterized in that: The transmission of the captured signal to the conditioning circuit includes bandpass filtering the acquired initial electromagnetic wave signal and intercepting the signal.

4. The wide dynamic range frequency selection ultra-high frequency conditioning method based on logarithmic detection as claimed in claim 3, characterized in that: The control of conducting the required path based on the logic control circuit includes amplifying the intercepted signal to amplify the amplitude of the UHF signal.

5. The wide dynamic range frequency selection ultra-high frequency conditioning method based on logarithmic detection as claimed in claim 4, characterized in that: The control of conducting the required path based on the logic control circuit includes using the logic control circuit to control the conduction of the required path, the two logic conduction circuits each control the channel selected by the high and low switches of the two input levels, the input level control mode of the logic control 1 module and the logic control 2 module is consistent, when the input level 1 and the input level 2 are both low levels, the passband 1 path is controlled to be conducted, when the input level 1 and the input level 2 are both high levels, the passband 4 path is controlled to be conducted, when the input level 1 is high and the input level 2 is low, the passband 2 path is controlled to be conducted, when the input level 1 is low and the input level 2 is high, the passband 3 path is controlled to be conducted, and when the conduction channels selected by the two logic control switches are consistent, the corresponding channels are conducted; The input end of the logic control circuit selects 3.3v as the high level input and 1.25v as the low level input to obtain the ultra-high frequency signal with the specific interference frequency band filtered out.

6. The wide dynamic range frequency selection ultra-high frequency conditioning method based on logarithmic detection as claimed in claim 5, characterized in that: The method of filtering out the out-of-band noise signal and performing logarithmic detection includes subjecting the ultra-high frequency signal to bandpass filtering again, filtering out the out-of-band noise signal generated in each circuit, and obtaining a new ultra-high frequency signal.

7. The wide dynamic range frequency selection ultra-high frequency conditioning method based on logarithmic detection as claimed in claim 6, characterized in that: The method of filtering out the out-of-band noise signal and performing logarithmic detection includes performing logarithmic detection on the obtained new ultra-high frequency signal, removing the oscillation details in the original signal while retaining the signal information of the amplitude and phase through the logarithmic detector to obtain the detection signal.

8. A system using the wide dynamic range frequency selection ultra-high frequency conditioning method based on logarithmic detection as claimed in any one of claims 1 to 7, characterized in that: It includes signal capture and transmission module, path conduction module and logarithmic detection module; The signal capture and transmission module is used to input the original electromagnetic wave signal into the entire conditioning circuit system and intercept the UHF signal; The path conducting module is used to conduct the required path; The logarithmic detection module is used to remove extra noise and perform logarithmic detection.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the wide dynamic range frequency selective ultra-high frequency conditioning method based on logarithmic detection described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the wide dynamic range frequency selective ultra-high frequency conditioning method based on logarithmic detection described in any one of claims 1 to 7 are implemented.

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