Signal enhancement system and method for HRF + HPLC communication

Abstract

The invention provides a signal enhancement system and method for HRF + HPLC communication, and relates to the technical field of communication, and the system comprises a dual-mode communication group construction module which is used for constructing a dual-mode communication group and is connected with the dual-mode communication group through an enhancement combiner; the amplitude limiting protection module is used for connecting the output end of the enhancement combiner with the combining protection piece, and when an HRF transmission signal corresponding to the HRF communication path and an HPLC transmission signal corresponding to the HPLC communication path are transmitted to the enhancement combiner, amplitude limiting protection is carried out on a composite transmission signal output by the enhancement combiner, and a composite transmission signal and an amplitude limiting protection signal which are output in a protection mode are obtained; and the signal reconstruction module is used for performing signal reconstruction on the composite transmission signal of the protection output based on the amplitude limiting protection signal to obtain a reconstructed transmission signal. According to the invention, the technical problem of poor communication stability in the prior art can be solved, and the technical effects of improving the signal transmission quality and enhancing the communication stability are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, and in particular to a signal enhancement system and method for HRF+HPLC communication. BACKGROUND

[0002] In modern communication systems, especially in scenarios requiring the simultaneous transmission of multiple signals, how to effectively realize signal fusion and protection of different communication links is a long-standing and challenging problem.

[0003] Currently, existing technologies usually rely on simple combiners to merge multiple signals, but when faced with mixed transmission of different frequency band signals, the frequency domain isolation effect is insufficient, which easily causes mutual interference, leading to a decline in communication quality. For example, when the HRF communication path works in the 20 to 30 megahertz frequency band and the HPLC communication path works in the 1 to 12 megahertz frequency band, if the frequency domain isolation is insufficient, out-of-band leakage and harmonic interference will directly affect the demodulation accuracy at the receiving end. In addition, existing combiners generally have deficiencies in signal protection, especially in the case of a sudden and drastic change in an external signal source, they cannot effectively suppress excessively high transient voltages or signal amplitudes, which easily leads to damage to downstream equipment. Some technologies add protection circuits at the output end of the combiner, but their amplitude limiting protection is usually a fixed threshold method, lacking dynamic adjustment capability, and cannot adaptively optimize for different communication environments or different interference characteristics.

[0004] In summary, the existing technology has the technical problem that due to insufficient frequency domain isolation precision and lack of adaptive adjustment capability of amplitude limiting protection, different frequency band signals produce mutual interference in combiner transmission and cannot effectively suppress transient overvoltage, further affecting the stability of the communication system and the reliability of data transmission. SUMMARY

[0005] The purpose of the present application is to provide a signal enhancement system and method for HRF+HPLC communication, to solve the technical problem in the prior art that due to insufficient frequency domain isolation precision and lack of adaptive adjustment capability of amplitude limiting protection, different frequency band signals produce mutual interference in combiner transmission and cannot effectively suppress transient overvoltage, further affecting the stability of the communication system and the reliability of data transmission.

[0006] In view of the above problems, the present application provides a signal enhancement system and method for HRF+HPLC communication.

[0007] In a first aspect, the application also provides a signal enhancement system for HRF+HPLC communication, comprising: a dual-mode communication group construction module, configured to construct a dual-mode communication group, the dual-mode communication group comprising an HRF communication path and an HPLC communication path, and the dual-mode communication group being connected by an enhanced combiner, wherein an input end of the enhanced combiner is connected to output ends of the HRF communication path and the HPLC communication path, and a frequency domain of the HRF communication path and the HPLC communication path in the enhanced combiner is isolated; an amplitude limiting protection module, configured to connect an output end of the enhanced combiner to a combiner protection device, and when HRF transmission signals and HPLC transmission signals corresponding to the HRF communication path and the HPLC communication path respectively are transmitted to the enhanced combiner, performing amplitude limiting protection on a composite transmission signal output by the enhanced combiner according to the combiner protection device to obtain a protection output composite transmission signal and an amplitude limiting protection signal; and a signal reconstruction module, configured to perform signal reconstruction on the protection output composite transmission signal based on the amplitude limiting protection signal to obtain a reconstructed transmission signal.

[0008] Preferably, the signal enhancement system for HRF+HPLC communication further comprises: an index identification unit, configured to obtain an external signal source of the dual-mode communication group and identify a signal source transient change index of the external signal source; and a protection device construction unit, configured to construct a branch-combination protection device when the signal source transient change index is greater than a preset transient change index, the branch-combination protection device comprising a branch protection device connected to the HRF communication path, a branch protection device connected to the HPLC communication path, and a combination protection device connected to an output end of the enhanced combiner.

[0009] Preferably, the signal enhancement system for HRF+HPLC communication further comprises: the branch protection device is a gas discharge tube, and the combination protection device is a TSV transient voltage suppressor.

[0010] Preferably, the signal enhancement system for HRF+HPLC communication further comprises: a signal acquisition unit, configured to acquire an enhanced HRF transmission signal and an enhanced HPLC transmission signal; and a signal sampling unit, configured to set a composite signal sampling point, and the combination protection device performs signal sampling on the enhanced HRF transmission signal and the enhanced HPLC transmission signal according to the composite signal sampling point to obtain a composite transmission signal.

[0011] Preferably, the HRF+HPLC communication signal enhancement system further comprises: a parameter reading unit configured to read loading parameters of the combiner protector, including a trigger threshold, a key threshold, a short time window, and a sampling rate; and a limiting protection unit configured to perform limiting protection on the composite transmission signal output by the enhancement combiner according to the loading parameters, to obtain a protected composite transmission signal frame and a limiting protection signal frame, and to perform continuous output on the protected composite transmission signal frame and the limiting protection signal frame, to obtain a protected composite transmission signal and a limiting protection signal.

[0012] Preferably, the HRF+HPLC communication signal enhancement system further comprises: a clamping sample interval marking unit configured to mark a clamping sample interval on the protected composite transmission signal based on the limiting protection signal; a reconstruction feature identification unit configured to identify a reconstruction feature of each clamping sample interval in the clamping sample interval, including an interval length, a signal bandwidth, and sparsity; a signal reconstruction algorithm acquisition unit configured to set a signal reconstruction selector, input the reconstruction feature of each clamping sample interval into the signal reconstruction selector, and acquire a signal reconstruction algorithm matched with each clamping sample interval, the signal reconstruction selector being a binary classification signal reconstruction algorithm, including a time domain interpolation algorithm and a compressed sensing sparse reconstruction algorithm; and an interval signal reconstruction unit configured to perform interval signal reconstruction according to the signal reconstruction algorithm matched with each clamping sample interval, to obtain a reconstructed transmission signal.

[0013] Preferably, the HRF+HPLC communication signal enhancement system further comprises: an initial reconstructed interval signal obtaining channel configured to obtain a signal sample of a current clamping sample interval, construct an interpolation matrix to perform interpolation processing on the signal sample, and obtain an initial reconstructed interval signal; and a reconstructed interval signal output channel configured to obtain a residual error and a noise variance of the initial reconstructed interval signal, calculate a confidence degree of the current clamping sample interval, and output a reconstructed interval signal of the current clamping sample interval if the confidence degree of the current clamping sample interval meets a pre-set confidence threshold.

[0014] Preferably, the HRF+HPLC communication signal enhancement system further comprises: a division channel configured to divide the current clamping sample interval into an un-clamped signal sample and a clamped signal sample; a clamped signal sample updating channel configured to obtain a sparse solution of the un-clamped signal sample, reconstruct the clamped signal sample according to the sparse solution, and update the clamped signal sample; and a reconstructed interval signal output channel configured to output a reconstructed interval signal of the current clamping sample interval according to the un-clamped signal sample and the updated clamped signal sample.

[0015] Preferably, the HRF+HPLC communication signal enhancement system further comprises: an isolation unit for embedding a band-pass filter set in the enhancement combiner, and isolating the passband of the HRF communication path and the passband of the HPLC communication path through the band-pass filter set; wherein the passband of the HRF communication path comprises 20-30MHz, and the passband of the HPLC communication path comprises 1-12MHz.

[0016] In a second aspect, the application provides an HRF+HPLC communication signal enhancement method, comprising: constructing a dual-mode communication group, the dual-mode communication group comprising an HRF communication path and an HPLC communication path, and connecting the dual-mode communication group through an enhancement combiner, wherein the input end of the enhancement combiner is connected with the output end of the HRF communication path and the HPLC communication path, and the frequency domain of the HRF communication path and the HPLC communication path in the enhancement combiner is isolated; connecting the output end of the enhancement combiner with a combiner protection device, when the HRF transmission signal and the HPLC transmission signal corresponding to the HRF communication path and the HPLC communication path are transmitted to the enhancement combiner, limiting and protecting the composite transmission signal output by the enhancement combiner according to the combiner protection device to obtain a protected output composite transmission signal and a limiting protection signal; and reconstructing the signal of the protected output composite transmission signal based on the limiting protection signal to obtain a reconstructed transmission signal.

[0017] The technical solutions provided in the application have at least the following technical effects or advantages: by achieving the technical target of high-precision isolation and dynamic limiting protection of multi-band signals, the technical effects of improving signal transmission quality, enhancing system anti-interference capability, and ensuring safe operation of downstream equipment are achieved.

[0018] The above description is only a summary of the technical solutions of the application. In order to more clearly understand the technical means of the application, the following detailed description can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following specific embodiments of the application are described. It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the application, nor is it intended to limit the scope of the application. Other features of the application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only exemplary, and other drawings can be obtained by those skilled in the art without creating any creative labor on the basis of the provided drawings.

[0020] Figure 1 A structural schematic diagram of a signal enhancement system for HRF+HPLC communication of the present application.

[0021] Figure 2 A flowchart of a signal enhancement method for HRF+HPLC communication of the present application.

[0022] Legend: dual-mode communication group construction module 1, amplitude limiting protection module 2, signal reconstruction module 3. DETAILED DESCRIPTION

[0023] The present application provides a signal enhancement system and method for HRF+HPLC communication, which solves the technical problem in the prior art that due to insufficient frequency domain isolation accuracy and lack of adaptive adjustment ability of amplitude limiting protection, different frequency band signals produce mutual interference in combined transmission and cannot effectively suppress transient overvoltage, further affecting the stability of the communication system and the reliability of data transmission. The technical goal of high-precision isolation and dynamic amplitude limiting protection of multi-band signals is achieved, and the technical effects of improving signal transmission quality, enhancing system anti-interference ability and ensuring safe operation of downstream equipment are achieved.

[0024] Hereinafter, the technical solutions in the present application will be described clearly and completely with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, not all embodiments of the present application. It should be understood that the present application is not limited by the example embodiments described herein. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application. In addition, it should be noted that, for convenience of description, only parts related to the present application are shown in the drawings, not all.

[0025] Embodiment one, please refer to the accompanying Figure 1 The present application provides a signal enhancement system for HRF+HPLC communication, specifically comprising: A dual-mode communication group construction module 1 is used to construct a dual-mode communication group, which includes an HRF communication path and an HPLC communication path, and is connected to the dual-mode communication group through an enhanced combiner. The input end of the enhanced combiner is connected to the output end of the HRF communication path and the HPLC communication path, and the frequency domain isolation of the HRF communication path and the HPLC communication path in the enhanced combiner.

[0026] Specifically, the dual-mode communication group is constructed by combining the HRF and HPLC two different communication modes together to form a whole, wherein the HRF communication path is a high-frequency wireless communication channel suitable for transmitting data at a higher frequency, and the HPLC communication path is a high-frequency power line communication channel for transmitting data signals through the power line. The enhanced combiner is an electronic device that can combine multiple signals into one, and the input end of the enhanced combiner is connected to the output ends of the HRF and HPLC two communication paths, so that the two signals are effectively integrated in the combiner. Then, the frequency domain isolation in the enhanced combiner refers to ensuring that the signals of different communication paths do not interfere with each other in frequency during signal combination.

[0027] The amplitude limiting protection module 2 is used to connect the output end of the enhanced combiner with the combiner protection, and when the HRF transmission signal and the HPLC transmission signal corresponding to the HRF communication path and the HPLC communication path are transmitted to the enhanced combiner, the amplitude limiting protection is performed on the composite transmission signal output by the enhanced combiner according to the combiner protection to obtain the protected composite transmission signal and the amplitude limiting protection signal.

[0028] Specifically, after the enhanced combiner combines the signals of the HRF communication path and the HPLC communication path, the output end is connected to a protection circuit, which is the combiner protection. The function of the combiner protection is to protect the voltage or power during signal transmission to avoid the signal amplitude exceeding the range that can be tolerated. The HRF communication path corresponds to the HRF transmission signal, and the HPLC communication path corresponds to the HPLC transmission signal. When the two signals are transmitted to the enhanced combiner, a composite transmission signal is formed, and the combiner protection limits the amplitude when the signal exceeds the safe range, i.e. amplitude limiting protection, to generate a composite transmission signal with the peak value limited within the safe range, and a amplitude limiting protection signal recording the protection action, containing amplitude limiting (clipping) information, such as a copy signal directly reflecting the clamping voltage of the TVS tube.

[0029] The signal reconstruction module 3 is used to perform signal reconstruction on the protected composite transmission signal based on the amplitude limiting protection signal to obtain the reconstructed transmission signal.

[0030] Specifically, the signal reconstruction of the protected composite transmission signal based on the amplitude limiting protection signal is to use the peak clipping or distortion period information recorded in the amplitude limiting protection signal to repair the composite transmission signal output from the enhanced combiner through the combiner protection and has been protected to restore its waveform close to the original state, thereby repairing or mitigating the signal distortion or information loss caused by amplitude limiting protection (clipping), restoring the information of the clipped part, and improving the signal quality and communication reliability.

[0031] Further, the application further comprises: an index identification unit, configured to acquire an external signal source of the dual-mode communication group, and identify a signal source transient change index of the external signal source; and a protector construction unit, configured to construct a branch-combining protector when the signal source transient change index is greater than a preset transient change index, wherein the branch-combining protector comprises a branch protector connected with the HRF communication path, a branch protector connected with the HPLC communication path, and a combining protector connected with an output end of the enhanced combiner.

[0032] Specifically, an input signal is received from an external device connected with the dual-mode communication group, and then an external signal source is acquired. The external signal source can be a signal generator, a communication base station, a power supply communication module, etc., and is responsible for providing original data signals to the HRF communication path and the HPLC communication path. The stability of the external signal source will directly affect the quality of subsequent signal processing, and therefore needs to be monitored.

[0033] Then, a signal source transient change index of the external signal source is identified, the change characteristics such as the amplitude, frequency or phase of the output signal of the external signal source are analyzed, and a quantitative index is used to represent the change speed or amplitude, reflecting the severity of the signal fluctuation in an instant.

[0034] Next, when the signal source transient change index is greater than a preset transient change index, it indicates that the signal change of the external signal source exceeds a safety threshold, and at this time, a branch-combining protector needs to be constructed to protect the signal transmission safety. The branch-combining protector is a protection system composed of multiple protection devices, wherein the branch protector is used to protect the signal lines of the HRF communication path and the HPLC communication path alone, to prevent signal overload of a single path; and the combining protector is used to protect the composite signal at the output end of the enhanced combiner, to avoid damage to the equipment or degradation of the communication quality caused by excessively high signal amplitude after combining. Table 1 is a protection configuration table of the external signal source of the dual-mode communication group.

[0035] Table 1: Protection configuration table of external signal source of dual-mode communication group

[0036] Further, the application further comprises: the branch protector is a gas discharge tube, and the combining protector is a TSV transient voltage suppressor.

[0037] Specifically, the branch protector installed on the HRF communication path and the HPLC communication path is a gas discharge tube. The gas discharge tube is filled with a specific gas, and when the line voltage exceeds its breakdown voltage, the gas will be broken down and conduct, thereby rapidly shunting the excessively high current to the ground wire, preventing damage to the signal line and the backend equipment due to excessively high voltage. The gas discharge tube has good protection effect on lightning strike, power grid surge and other high-energy transient disturbances.

[0038] The protection device installed at the output end of the enhanced combiner is a TSV transient voltage suppressor, which is a semiconductor device for quickly suppressing transient overvoltage. When the voltage in the composite signal rises above the safety threshold in a very short time, the TSV transient voltage suppressor will conduct in nanoseconds and clamp the voltage within a safe range, thereby protecting the signal transmission system after the combination from high voltage impact.

[0039] Further, the application also includes: a signal acquisition unit for acquiring enhanced HRF transmission signals and enhanced HPLC transmission signals; a signal sampling unit for setting a composite signal sampling point, and the protection device performs signal sampling on the enhanced HRF transmission signals and the enhanced HPLC transmission signals according to the composite signal sampling point to obtain a composite transmission signal.

[0040] Specifically, the enhanced HRF transmission signals and the enhanced HPLC transmission signals are acquired, that is, two gain-processed communication signals are received, wherein the enhanced HRF transmission signals are data signals transmitted and amplified through a high-frequency wireless channel, and the enhanced HPLC transmission signals are data signals transmitted and amplified through a high-frequency power line channel, thereby improving the signal strength and having better anti-interference ability and transmission quality in the subsequent combination and processing stage.

[0041] Then, setting a composite signal sampling point means determining a specific time position to collect signal samples before signal synthesis, which can be distributed according to a fixed interval or an adaptive strategy to ensure that the waveform characteristics of the signal can be completely captured during sampling. The selection of the composite signal sampling point will affect the accuracy and fidelity of the final composite signal. If the composite signal sampling point is too few, information loss may occur, and if it is too much, the processing burden will be increased.

[0042] Next, the protection device will perform synchronous sampling on the enhanced HRF transmission signals and the enhanced HPLC transmission signals according to the set composite signal sampling point, align and collect the two enhanced signals from different sources according to the same time reference, thereby generating a composite transmission signal containing the signal information of the two paths. The composite transmission signal is a signal form that combines multiple signals into one transmission path, which can not only reduce the use of physical lines, but also realize the cooperative transmission of multiple communication modes.

[0043] Further, the application also includes: a parameter reading unit for reading the loading parameters of the protection device, including a trigger threshold, a key threshold, a short-time window, and a sampling rate; an amplitude limiting protection unit for limiting the amplitude of the composite transmission signal output by the enhanced combiner according to the loading parameters to obtain a protected composite transmission signal frame and an amplitude limiting protection signal frame; and performing continuous output on the protected composite transmission signal frame and the amplitude limiting protection signal frame to obtain a protected composite transmission signal and an amplitude limiting protection signal.

[0044] Specifically, the load parameters of the combiner protection device are read. These load parameters include the trigger threshold, critical threshold, short-time window, and sampling rate. The trigger threshold indicates when the signal amplitude reaches a specific value, triggering the protection function; the critical threshold represents the upper limit of the protection device's operation; the short-time window represents the time range within which signal changes are analyzed within a very short period of time; and the sampling rate refers to the number of times the signal is sampled per second. These load parameters collectively determine the sensitivity and accuracy of the protection response.

[0045] Then, based on the loading parameters, the composite transmission signal output by the enhanced combiner is clipped for protection. The protected signal is then split into continuous segments, which serve as composite transmission signal frames for protection output. A corresponding clipping protection signal frame is also generated. The clipping protection signal frame is a detailed record of the protection action. Subsequently, by continuously outputting the composite transmission signal frame and the clipping protection signal frame, a continuous composite transmission signal and clipping protection signal are ultimately generated.

[0046] Furthermore, the present application also includes: a clamped sample interval marking unit, used to mark the clamped sample interval on the composite transmission signal of the protection output based on the limiting protection signal; a reconstruction feature identification unit, used to identify the reconstruction features of each clamped sample interval in the clamped sample interval, including interval length, signal bandwidth and sparsity; a signal reconstruction algorithm acquisition unit, used to set a signal reconstruction selector, input the reconstruction features of each clamped sample interval into the signal reconstruction selector to obtain a signal reconstruction algorithm matching each clamped sample interval, the signal reconstruction selector is a binary signal reconstruction algorithm, including a time domain interpolation algorithm and a compressed sensing sparse reconstruction algorithm; an interval signal reconstruction unit, used to reconstruct the interval signal according to the signal reconstruction algorithm matching each clamped sample interval to obtain a reconstructed transmission signal.

[0047] Specifically, the trigger information recorded in the clipping protection signal is used to find the specific time period or data segment in the composite transmission signal that is clamped by the clipping device and mark it to obtain the clamped sample interval. The clamped sample interval is a continuous segment of the clipping protection signal where the amplitude change is limited.

[0048] Identify the reconstruction features of each clamped sample interval in the clamped sample interval, that is, analyze the specific characteristics of the marked interval, such as the interval length represents the number of sampling points contained in the clamped sample interval, the signal bandwidth represents the range of the frequency components of the signal in the clamped sample interval, and the sparsity represents the proportion of non-zero coefficients of the signal in a certain transform domain.

[0049] The signal reconstruction selector is a two-class structure, including a time domain interpolation algorithm and a compressed sensing sparse reconstruction algorithm. The time domain interpolation algorithm is suitable for a case where a signal changes gently and the number of missing points is small. The compressed sensing sparse reconstruction algorithm is suitable for a case where a signal is sparse and the bandwidth is narrow but the proportion of missing points is large.

[0050] According to the signal reconstruction algorithm matched with each clipping sample interval, interval signal reconstruction is performed. According to the result given by the signal reconstruction selector, a corresponding repair method is used for each clipping sample interval to complete the missing or distorted data, and finally a complete reconstructed transmission signal is obtained, so that the reconstructed transmission signal is as close as possible to the original undisturbed signal.

[0051] Further, the application also includes: an initial reconstruction interval signal obtaining channel for obtaining signal samples of a current clipping sample interval, constructing an interpolation matrix to perform interpolation processing on the signal samples to obtain an initial reconstruction interval signal; and a reconstruction interval signal output channel for obtaining a residual error and a noise variance of the initial reconstruction interval signal, calculating a confidence degree of the current clipping sample interval, and outputting a reconstruction interval signal of the current clipping sample interval if the confidence degree of the current clipping sample interval meets a pre-set confidence threshold.

[0052] Specifically, the signal samples of the current clipping sample interval are obtained, that is, the actual signal data points in the interval marked by the clipping protection are extracted. The signal samples may be missing or have limited amplitude. According to the position of the known data points in time or space, a mathematical structure for calculating the value of the missing points is generated, an interpolation matrix is constructed, and the value of the missing position is calculated by using the interpolation matrix and the existing data, so as to obtain the initial reconstruction interval signal.

[0053] The initial reconstruction interval signal is compared with the original signal to obtain a residual error therebetween. The smaller the residual error is, the closer the repair is to the real signal. A statistical value for measuring the intensity of random noise in the initial reconstruction interval signal is obtained, and the noise variance is obtained. The smaller the noise variance is, the smaller the signal noise is. The residual error and the noise variance can be used to calculate the confidence degree of the current clipping sample interval, which represents the reliability of the repair result. The confidence degree of the current clipping sample interval can be obtained by weighting the residual error and the noise variance. The weighting coefficient is self-defined by a person skilled in the art according to the actual situation. The smaller the residual error and the noise variance are, the higher the confidence degree of the current clipping sample interval is, and vice versa.

[0054] If the confidence of the current clamped sample interval meets the pre-set confidence threshold, it indicates that the repair result is reliable enough, and the initial reconstruction interval signal of the current clamped sample interval can be output as the final repair data, and the reconstruction interval signal of the current clamped sample interval is output. On the contrary, if the pre-set confidence threshold is not met, further repair may be needed to improve the accuracy of recovery.

[0055] Further, the application further comprises: a division channel for dividing the current clamped sample interval into unclamped signal samples and clamped signal samples; a clamped signal sample updating channel for obtaining a sparse solution of the unclamped signal samples, reconstructing the clamped signal samples according to the sparse solution, and updating the clamped signal samples; and a reconstruction interval signal output channel for outputting the reconstruction interval signal of the current clamped sample interval according to the unclamped signal samples and the updated clamped signal samples.

[0056] Specifically, the current clamped sample interval divides the part of the signal data that has not been subjected to amplitude limitation and retains the original waveform as unclamped signal samples, and the part that has been subjected to amplitude truncation or distortion as clamped signal samples, thereby separating reliable information from damaged information for targeted repair of the missing part in subsequent processing.

[0057] The unclamped signal samples are represented by as few non-zero coefficient sets as possible in the transform domain (such as the wavelet domain or the Fourier domain) using the sparse representation theory, a sparse solution of the unclamped signal samples is obtained, the main structural features of the signal are captured, the clamped signal samples are reconstructed according to the sparse solution, the original shape of the clamped signal samples is inferred, and the clamped signal samples are updated so that the clamped signal samples are closer to the original signal.

[0058] The unclamped signal samples and the updated clamped signal samples are recombined to form a complete signal segment that restores the original waveform as much as possible, and the reconstruction interval signal of the current clamped sample interval is output.

[0059] Further, the application further comprises: an isolation unit for embedding a band-pass filter set in the enhanced combiner, and isolating the passband of the HRF communication path and the HPLC communication path through the band-pass filter set; and a passband obtaining unit, wherein the passband of the HRF communication path includes 20-30MHz, and the passband of the HPLC communication path includes 1-12MHz.

[0060] Specifically, a band-pass filter set is arranged inside the enhanced combiner, and the band-pass filter is an electronic element that only allows signals of a specific frequency range to pass through and shields other frequency signals. Through the band-pass filter set, the frequency range of the HRF communication path and the HPLC communication path can be accurately controlled to avoid interference caused by signal overlap.

[0061] Then, the band-pass filter group isolates the passband of the two-way communication of the HRF communication path and the HPLC communication path. Specifically, the signal passband of the HRF communication path is set in the range of 20 to 30 MHz, and the signal passband of the HPLC communication path is set in the range of 1 to 12 MHz. The frequency band division ensures that the two signals can maintain their own spectral space even when transmitting at the same time, and there is no crosstalk. For example, if the HRF signal is 25 MHz and the HPLC signal is 10 MHz, they are located in different frequency intervals, so they will not interfere with each other.

[0062] In summary, the signal enhancement system for HRF+HPLC communication provided by the present application has the following technical effects: by achieving the technical targets of high-precision isolation and dynamic amplitude limiting protection of multi-band signals, the technical effects of improving signal transmission quality, enhancing system anti-interference ability and ensuring safe operation of downstream equipment are achieved.

[0063] In the second embodiment, based on the same inventive concept as the signal enhancement system for HRF+HPLC communication in the foregoing embodiments, the present application also provides a signal enhancement method for HRF+HPLC communication, please refer to the accompanying drawings Figure 2 , comprising: constructing a dual-mode communication group, the dual-mode communication group comprising an HRF communication path and an HPLC communication path, connecting the dual-mode communication group through an enhanced combiner, wherein the input end of the enhanced combiner is connected with the output end of the HRF communication path and the HPLC communication path, and the frequency domain of the HRF communication path and the HPLC communication path in the enhanced combiner is isolated; connecting the output end of the enhanced combiner with a combiner protection device, when the HRF transmission signal and the HPLC transmission signal corresponding to the HRF communication path and the HPLC communication path respectively are transmitted to the enhanced combiner, limiting the protection of the composite transmission signal output by the enhanced combiner according to the combiner protection device to obtain the protection output composite transmission signal and the amplitude limiting protection signal; based on the amplitude limiting protection signal, reconstructing the protection output composite transmission signal to obtain the reconstructed transmission signal.

[0064] Further, the signal enhancement method for HRF+HPLC communication further comprises: acquiring an external signal source of the dual-mode communication group, identifying a signal source transient change index of the external signal source; when the signal source transient change index is greater than a preset transient change index, constructing a branch-combiner protection device, the branch-combiner protection device comprising a branch protection device connected with the HRF communication path, a branch protection device connected with the HPLC communication path, and a combiner protection device connected with the output end of the enhanced combiner.

[0065] Further, the HRF+HPLC communication signal enhancement method further comprises: the branch protection device is a gas discharge tube, and the combining protection device is a TSV transient voltage suppressor.

[0066] Further, the HRF+HPLC communication signal enhancement method further comprises: obtaining an enhanced HRF transmission signal and an enhanced HPLC transmission signal; setting a composite signal sampling point, and the combining protection device performs signal sampling on the enhanced HRF transmission signal and the enhanced HPLC transmission signal according to the composite signal sampling point to obtain a composite transmission signal.

[0067] Further, the HRF+HPLC communication signal enhancement method further comprises: reading loading parameters of the combining protection device, including a trigger threshold, a key threshold, a short time window, and a sampling rate; performing amplitude limiting protection on the composite transmission signal output by the enhanced combiner according to the loading parameters to obtain a protected composite transmission signal frame and an amplitude limiting protection signal frame; and performing continuous output on the protected composite transmission signal frame and the amplitude limiting protection signal frame to obtain a protected composite transmission signal and an amplitude limiting protection signal.

[0068] Further, the HRF+HPLC communication signal enhancement method further comprises: marking a clamping sample interval on the protected composite transmission signal based on the amplitude limiting protection signal; identifying a reconstruction feature of each clamping sample interval in the clamping sample interval, including an interval length, a signal bandwidth, and sparsity; setting a signal reconstruction selector, inputting the reconstruction feature of each clamping sample interval into the signal reconstruction selector to obtain a signal reconstruction algorithm matched with each clamping sample interval, the signal reconstruction selector being a binary classification signal reconstruction algorithm, including a time domain interpolation algorithm and a compressed sensing sparse reconstruction algorithm; and performing interval signal reconstruction according to the signal reconstruction algorithm matched with each clamping sample interval to obtain a reconstructed transmission signal.

[0069] Further, the HRF+HPLC communication signal enhancement method further comprises: obtaining a signal sample of a current clamping sample interval, constructing an interpolation matrix to perform interpolation processing on the signal sample to obtain an initial reconstructed interval signal; obtaining a residual error and a noise variance of the initial reconstructed interval signal, calculating a current clamping sample interval confidence, and outputting a reconstructed interval signal of the current clamping sample interval if the current clamping sample interval confidence meets a pre-set confidence threshold.

[0070] Further, the HRF+HPLC communication signal enhancement method further includes: dividing the current clamped sample interval into unclamped signal samples and clamped signal samples; obtaining a sparse solution of the unclamped signal samples, reconstructing the clamped signal samples according to the sparse solution, and updating the clamped signal samples; and outputting a reconstructed interval signal of the current clamped sample interval according to the unclamped signal samples and the updated clamped signal samples.

[0071] Further, the HRF+HPLC communication signal enhancement method further includes: embedding a band-pass filter set in the enhancement combiner, and isolating the passband of the HRF communication path and the passband of the HPLC communication path through the band-pass filter set; wherein the passband of the HRF communication path includes 20-30 MHz, and the passband of the HPLC communication path includes 1-12 MHz.

[0072] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The HRF+HPLC communication signal enhancement system and specific examples in the aforementioned embodiment one are also applicable to the HRF+HPLC communication signal enhancement method in the present embodiment. The HRF+HPLC communication signal enhancement method in the present embodiment can be clearly understood by the detailed description of the HRF+HPLC communication signal enhancement system. Therefore, for the sake of brevity of the specification, the HRF+HPLC communication signal enhancement method will not be described in detail.

[0073] The above description of disclosed embodiments allows a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0074] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the present application and its equivalents, the present application is intended to include these modifications and variations.

Claims

1. A signal enhancement system for HRF+HPLC communication, characterized by, The system comprises: A dual-mode communication group construction module for constructing a dual-mode communication group, the dual-mode communication group comprising an HRF communication path and an HPLC communication path, and the dual-mode communication group being connected by an enhanced combiner, wherein an input end of the enhanced combiner is connected with output ends of the HRF communication path and the HPLC communication path, and a frequency domain of the HRF communication path and the HPLC communication path in the enhanced combiner is isolated; An amplitude limiting protection module for connecting an output end of the enhanced combiner with a combiner protection device, and when HRF transmission signals and HPLC transmission signals corresponding to the HRF communication path and the HPLC communication path respectively are transmitted to the enhanced combiner, performing amplitude limiting protection on a composite transmission signal output by the enhanced combiner according to the combiner protection device to obtain a protection output composite transmission signal and an amplitude limiting protection signal; A signal reconstruction module for performing signal reconstruction on the protection output composite transmission signal based on the amplitude limiting protection signal to obtain a reconstructed transmission signal.

2. A signal enhancement system for HRF+HPLC communication as claimed in claim 1, wherein, The dual-mode communication group construction module comprises: An index identification unit for acquiring an external signal source of the dual-mode communication group and identifying a signal source transient change index of the external signal source; A protection device construction unit for constructing a branch-combiner protection device when the signal source transient change index is greater than a preset transient change index, the branch-combiner protection device comprising a branch protection device connected with the HRF communication path, a branch protection device connected with the HPLC communication path, and a combiner protection device connected with an output end of the enhanced combiner.

3. A signal enhancement system for HRF+HPLC communication as claimed in claim 2, wherein, The branch protection device is a gas discharge tube, and the combiner protection device is a TSV transient voltage suppressor.

4. A signal enhancement system for HRF+HPLC communication as claimed in claim 2, wherein, The dual-mode communication group construction module further comprises: A signal acquisition unit for acquiring an enhanced HRF transmission signal and an enhanced HPLC transmission signal; A signal sampling unit for setting a composite signal sampling point, and the combiner protection device performs signal sampling on the enhanced HRF transmission signal and the enhanced HPLC transmission signal according to the composite signal sampling point to obtain a composite transmission signal.

5. A signal enhancement system for HRF+HPLC communication as claimed in claim 1, wherein, The amplitude limiting protection module comprises: A parameter reading unit for reading loading parameters of the combiner protection device, including a trigger threshold, a key threshold, a short time window, and a sampling rate; An amplitude limiting protection unit for performing amplitude limiting protection on the composite transmission signal output by the enhanced combiner according to the loading parameters to obtain a protection output composite transmission signal frame and an amplitude limiting protection signal frame, and performing continuous output by the protection output composite transmission signal frame and the amplitude limiting protection signal frame to obtain the protection output composite transmission signal and the amplitude limiting protection signal.

6. A signal enhancement system for HRF+HPLC communication as recited in claim 1, wherein, The signal reconstruction module comprises: A clamping sample interval marking unit for marking a clamping sample interval on the protection output composite transmission signal based on the amplitude limiting protection signal; A reconstruction feature identification unit for identifying a reconstruction feature of each clamping sample interval in the clamping sample interval, including an interval length, a signal bandwidth, and sparsity. The signal reconstruction algorithm acquisition unit is configured to set a signal reconstruction selector, input the reconstruction characteristics of each clamping sample interval into the signal reconstruction selector, and acquire the signal reconstruction algorithm matched for each clamping sample interval. The signal reconstruction selector is a binary classification signal reconstruction algorithm, and includes a time domain interpolation algorithm and a compressed sensing sparse reconstruction algorithm. The interval signal reconstruction unit is configured to perform interval signal reconstruction according to the signal reconstruction algorithm matched for each clamping sample interval, to obtain a reconstructed transmission signal.

7. A signal enhancement system for HRF+HPLC communication as claimed in claim 6, wherein, The signal reconstruction algorithm acquisition unit includes: An initial reconstruction interval signal obtaining channel configured to acquire signal samples of a current clamping sample interval, construct an interpolation matrix, perform interpolation processing on the signal samples, and obtain an initial reconstruction interval signal. A reconstruction interval signal output channel configured to acquire a residual error and a noise variance of the initial reconstruction interval signal, calculate a confidence level of the current clamping sample interval, and output a reconstruction interval signal of the current clamping sample interval if the confidence level of the current clamping sample interval meets a preset confidence threshold.

8. A signal enhancement system for HRF+HPLC communication as claimed in claim 7, wherein, The signal reconstruction algorithm acquisition unit further includes: A division channel configured to divide the current clamping sample interval into unclamped signal samples and clamped signal samples. A clamped signal sample updating channel configured to acquire a sparse solution of the unclamped signal samples, reconstruct the clamped signal samples according to the sparse solution, and update the clamped signal samples. A reconstruction interval signal output channel configured to output the reconstruction interval signal of the current clamping sample interval according to the unclamped signal samples and the updated clamped signal samples.

9. A signal enhancement system for HRF+HPLC communication as defined in claim 1, wherein, The dual-mode communication group construction module further includes: An isolation unit configured to embed a band-pass filter group in the enhanced combiner, and isolate the pass frequency bands of the HRF communication path and the HPLC communication path through the band-pass filter group. The pass frequency band of the HRF communication path includes 20-30 MHz, and the pass frequency band of the HPLC communication path includes 1-12 MHz.

10. A method for signal enhancement of HRF+HPLC communication, characterized by, The HRF+HPLC communication signal enhancement system according to any one of claims 1 to 9 is executed, and the HRF+HPLC communication signal enhancement method includes: Constructing a dual-mode communication group including an HRF communication path and an HPLC communication path, and connecting the dual-mode communication group through an enhanced combiner, wherein the input end of the enhanced combiner is connected with the output ends of the HRF communication path and the HPLC communication path, and the frequency domains of the HRF communication path and the HPLC communication path are isolated in the enhanced combiner; Connecting the output end of the enhanced combiner with a combiner protection device, and performing amplitude limiting protection on the composite transmission signal output by the enhanced combiner according to the combiner protection device when the HRF transmission signal and the HPLC transmission signal corresponding to the HRF communication path and the HPLC communication path are transmitted to the enhanced combiner, to obtain a protection output composite transmission signal and an amplitude limiting protection signal; Performing signal reconstruction on the protection output composite transmission signal based on the amplitude limiting protection signal, to obtain a reconstructed transmission signal.

Images