55results about How to "Avoid signal distortion" patented technology

The invention discloses a well drilling vibration measurement and real-time calibration system based on a vibration sensor, and relates to the technical field of data processing. The system comprises a signal measurement part, a signal correction compensation part, a signal analysis part and a signal calibration part, the signal measuring part is used for installing a vibration sensor and an accelerometer near a drill bit or a drill column and generating a fundamental frequency vibration signal; the signal correction compensation part is used for performing stick-slip effect compensation on the fundamental frequency vibration signal to obtain a first compensation signal; calculating the resonant frequency of the drilling system; calculating the bending stress of the drill string; calculating well track deviation; the signal analysis part is used for calculating the dynamic load of the drilling system to obtain the vibration energy dissipation of the drilling system; calculating the system response of the drilling system; and the signal calibration part is used for calculating a calibration coefficient. According to the invention, the precision and calibration capability of vibration signal measurement are significantly improved.

The invention relates to a cloth setting machine energy-saving optimization method based on artificial intelligence. The method comprises the following steps: S1, collecting process operation data in a cloth setting process; s2, preprocessing the collected data, and eliminating noise and abnormity; s3, dividing the setting machine control system into a heating control subsystem, a moisture removal control subsystem and a circulating air control subsystem according to different functions; s4, according to the predicted energy consumption demand, a multi-objective optimization algorithm is used, two objectives of shaping quality and energy consumption are optimized at the same time, and an optimal temperature, humidity and airflow velocity combined curve scheme is output; and S5, introducing a deep reinforcement learning training intelligent controller, directly feeding back the working condition of the setting machine through real-time data, and dynamically adjusting the operation of each subsystem based on the optimal temperature, humidity and airflow velocity combined curve scheme. The cloth shaping quality and the energy utilization efficiency are remarkably improved.

The invention discloses a novel three-dimensional packaging structure based on a flexible substrate and a chip heat dissipation method, particularly relates to the technical field of micro three-dimensional integrated circuit packaging structures, and solves the problems that in the prior art, a chip packaging structure is low in integration level and poor in heat dissipation performance, and the manufacturing process of a silicon through hole technology in advanced packaging is complex; in the prior art, a silicon chip needs to be drilled and filled with a conductive material, so that the production cost is increased, the drilling and filling process has extremely high requirements on precision and control, and secondly, signal interference is caused, and a series of signal distortion and crosstalk problems can be caused in the field of high-frequency signals due to the fact that a TSV is vertical; according to the technical scheme, a rigid-flexible combined packaging structure, a rigid metal stable three-dimensional packaging structure and a flexible substrate are adopted, and expensive technologies such as through silicon vias are not used; according to the three-dimensional packaging structure, essence of the rigid substrate and essence of the flexible substrate are respectively taken, dregs are removed, and the rigid substrate and the flexible substrate make up for each other.

The invention relates to a switch cabinet arc detection system based on fluorescent optical fibers, and aims to improve the efficiency and accuracy of switch cabinet arc monitoring in an electric power system. The system is characterized in that the system comprises a host module, a photoelectric conversion module and an optical fiber sensing detection unit, simultaneous detection of multiple switch cabinet arcs can be realized, the detection time is less than 2.5 ms, and the sensitivity and reliability of arc detection are significantly improved. Besides, the system also provides a rapid electric quantity protection algorithm, and a high-reliability arc light rapid protection device with protection action time of 3-5ms is developed by combining voltage, current and arc light comprehensive criteria, so that the problem of rapid clearing of arc light discharge faults is effectively solved. The arc detection system has the advantages of being low in cost, easy to maintain, high in environmental adaptability and the like, and is suitable for arc monitoring in the high-voltage switch cabinet.

The invention relates to a transient electromagnetic signal denoising method based on self-adaptive fuzzy optimization singular spectrum analysis (SSA), which aims at denoising transient electromagnetic signals, and comprises the following specific steps of: 1, decomposing a noisy signal into a plurality of modes through a complementary ensemble empirical mode decomposition (CEEMD) method; and according to the sample entropy, classifying the modals into a signal-dominant category and a noise-dominant category. 2, taking a signal fuzzy entropy (FE) as a target function of each modal optimization, obtaining a strict boundary of each modal SSA reconstruction order by using a particle swarm optimization (PSO) algorithm, and taking a singular value in the strict boundary as a signal component; thirdly, solving loose boundaries of each modal reconstruction order through a singular value spectrum and a singular value difference spectrum, and generating a fuzzy interval by combining the loose boundaries with the strict boundaries; and 4, obtaining the membership degree of the singular value belonging to the signal or noise component in the fuzzy interval through a weighted fuzzy noise clustering algorithm (WFNC), and carrying out signal component reconstruction by taking the membership degree as a weight. And finally, adaptive reconstruction of each mode is carried out on the signal components by using an SSA method, and a de-noised signal is obtained through mode summation. According to the method, a low-signal-to-noise-ratio adaptive singular spectrum analysis denoising method is provided, the problem of wrong singular value selection in the reconstruction process is avoided, and the signal-to-noise ratio is effectively improved.

This invention discloses a dielectric ceramic substrate material with a negative capacitance temperature coefficient, its preparation method, and its application, relating to the field of functional ceramics technology. It comprises, by mass percentage, 76wt%~93.5wt% CaTiO. 3 2wt%~15.5wt% SrTiO 3 1wt%~8.5wt% MgTiO 3 The ceramic substrate material contains 1.5wt%~3.2wt% modifier and 2wt%~4.5wt% cooling agent. It possesses excellent flexural strength, good surface roughness, and bonding strength, making it suitable for fabricating miniaturized chip-type microwave monolayer ceramic capacitors with low dielectric loss. It exhibits a negative temperature coefficient of capacitance (-(1500±500)ppm / ℃, (-55~125)℃), which can compensate for capacitance drift caused by temperature changes and prevent signal distortion. Furthermore, it is flat, non-deformable, and has good rectangularity, exhibiting excellent surface properties.

The utility model provides an automatic deviation rectifying and unwinding device for a reticulated film base material, which belongs to the field of film base material unwinding devices and comprises a base, a support plate and an outer cover are arranged above the base, the top of the support plate is fixedly connected with a vertical frame, the side wall of the outer cover is rotatably connected with an air expansion shaft, and a coiled material is sleeved on the air expansion shaft. The side wall of the outer cover is rotationally connected with a deviation rectifying shaft, a transmission shaft and an auxiliary shaft, the outer side wall of the outer cover is fixedly connected with a sensor, the sensor is arranged between the deviation rectifying shaft and the auxiliary shaft, the inner side wall of the outer cover is fixedly connected with a motor, and the transmission shaft penetrates through the end of the outer cover and is in transmission connection with an output shaft of the motor through a first belt. The inner side wall of the outer cover is rotationally connected with a rotating shaft, the rotating shaft is in transmission connection with an output shaft of the motor through a second belt, an air injection assembly is arranged in the outer cover, air in the air storage pipe is extruded to be sprayed out and blown to a probe of the sensor, and signal distortion caused by the fact that the sensor is shielded by foreign matter is prevented.

The invention discloses a post-processing method and device for improving voice listening feeling, equipment and a medium. The degree of contrast stretching can be limited through the pre-configured maximum contrast stretching value, and signal distortion caused by excessive stretching is prevented. When the target contrast stretching parameter of any frequency is determined, the target contrast stretching parameter is determined by dividing the preset contrast stretching preset parameter corresponding to the frequency by the preset contrast stretching maximum value, so that the energy of the human ear non-sensitive frequency can be effectively reduced, and the energy of the human ear sensitive frequency can be kept. And subsequently, stretching processing is performed on the amplitude spectrum of the current voice frame by applying the target contrast stretching parameters corresponding to the frequencies so as to obtain a stretched amplitude spectrum, and the stretched amplitude spectrum maintains the energy of human ear sensitive frequencies and reduces the energy of non-sensitive frequencies on the basis of maintaining the original voice signal characteristics, so that the accuracy of the speech signal quality is improved. And the problem of numerical value overflow caused by excessive stretching of the amplitude of the human ear sensitive frequency is avoided.

The application relates to a high-resolution processing method of borehole radar data based on mixed time-frequency analysis, which comprises the following steps: constructing discrete frequencies based on the scale resolution of borehole radar data; performing Hilbert transform on the borehole radar data to generate an analytical signal; filtering the signal, reconstructing the signal, and then obtaining weighted energy of different frequency bands, and finally outputting data processed by high-resolution processing. The application realizes dynamic weighting through low-frequency and high-frequency weighting factors, flexibly enhances or suppresses low-frequency / high-frequency components; through envelope normalization, pulse noise is suppressed, and the signal-to-noise ratio is improved; through conjugate symmetric padding, the original phase information is preserved when filtering in the frequency domain, signal distortion is avoided, and the time positioning accuracy can be maintained in time-frequency analysis; through different frequency band energy weighting processing, high and low frequency joint analysis is realized, the high and low frequencies are simultaneously widened, and high-resolution amplitude-preserving processing is realized.

The utility model discloses a xenon lamp array cooling system and a laser inertial confinement fusion device thereof, which belong to the xenon lamp technology and comprise a lamp array component, a fan, an optical fiber temperature sensor and temperature monitoring software. The LED lamp is characterized in that the lamp array assembly comprises a xenon lamp, a reflecting surface, a cover plate and an air guide channel. The xenon lamp is installed and placed in the lamp array, xenon lamp installation holes are formed in the lamp array assembly, the air guide channels are arranged on the two sides of the lamp array, the draught fan is a powerful blowing air blower, and the optical fiber temperature sensor is used for monitoring the temperature change of a lamp array cover plate. The monitoring software can monitor the variation trend of the temperature of the lamp array in real time. The xenon lamp array cooling system effectively reduces the temperature of the lamp array in a short time, monitors the temperature change of the lamp array, and provides guarantee for reliable and stable operation of the lamp array.

The utility model discloses a device for leading out a cathode nuclear signal of a proportional counter tube, and belongs to the technical field of nuclear detection. In order to solve the technical problem that the measurement precision is influenced by signal distortion easily caused by leading out nuclear signals from the anode of the existing proportional counter tube, the utility model mainly adopts a mode of leading out nuclear signals from the cathode of the proportional counter tube, and is provided with a first signal joint, a second signal joint, a third signal joint and a metal shielding shell in a matched manner. According to the utility model, complete output and electromagnetic interference suppression of nuclear signals can be realized, and signal quality and device stability are improved.

This invention discloses a 25Gbps transimpedance amplifier with current compensation to improve overload performance. The current compensation circuit (CMP) is part of the 25Gbps transimpedance amplifier. The main link of the transimpedance amplifier consists of a core amplifier (Tia_core), a single-ended to differential amplifier (S2D), an output buffer, an automatic gain control (AGC) circuit, the current compensation circuit (CMP), and a mirror transimpedance amplifier (Dummy_tia) module. The input current signal is converted into a single-ended voltage signal by the core amplifier (Tia_core), and then the single-ended to differential amplifier (S2D) converts the single-ended signal voltage into a differential voltage. The output buffer transmits this differential signal to the next stage chip, ensuring impedance matching during transmission. The automatic gain control (AGC) circuit automatically adjusts the gain of the core amplifier (Tia_core) circuit according to the input current amplitude. The current compensation circuit (CMP) included in this invention can effectively prevent the transimpedance amplifier link from over-saturating and causing signal distortion when the input current signal is a large signal at the mA level, thus significantly improving the overload performance of the transimpedance amplifier.

This invention discloses an inertia-adjustable grid-connected device and control method for reducing motor-to-ground voltage. The device comprises an even number of motor grid-connected interface devices connected in series between the positive and negative buses of a bipolar DC-DC converter. The intermediate node of each even number of motor grid-connected interface devices is grounded to reduce the motor-to-ground voltage. Each motor grid-connected interface device includes a doubly-fed induction generator (DFIG), a first DC / AC converter, a permanent magnet synchronous motor (PMSM), and a second DC / AC converter. The positive terminal of each motor grid-connected interface device is connected to the positive DC side of both the first and second DC / AC converters, and the negative terminal is connected to the negative DC side of both the first and second DC / AC converters. This invention aims to reduce the ground voltage of both the DFIG and PMSM, lower insulation requirements, extend insulation life, and improve the stability and reliability of the electrical system.

The invention relates to a skin impedance detection circuit and radio frequency treatment equipment, and the circuit comprises a detection electrode module which is used for making contact with human skin to form a current detection loop; the differential current acquisition circuit is connected in series in the current detection loop and is configured to convert the excitation current flowing through the detection electrode module into a differential voltage signal; the amplifying circuit capable of digitally controlling gain is connected to the output end of the differential current acquisition circuit and is configured to receive the differential voltage signal, switch gain gears according to a digital control signal and output an amplified analog signal; and the main control module is connected to the amplifying circuit capable of digitally controlling the gain, and is configured to collect the amplified analog signal, calculate a skin impedance value by combining the current gain gear and the known excitation parameter, and generate an equipment control instruction according to the skin impedance value. The skin impedance detection circuit can detect impedance in real time and set a safety threshold value, and when the impedance exceeds a normal range, the equipment can immediately pause output or reduce power.

The invention discloses a hydrogen damage test device and a detection method thereof.The hydrogen damage test device comprises an electrolyte container, an electrochemical workstation, an acoustic emission probe, an acoustic emission detector and a computer, and a metal sample, an auxiliary electrode and electrolyte are arranged in the electrolyte container; the metal sample and the auxiliary electrode are soaked in the electrolyte and are both connected with the electrochemical workstation, the non-hydrogen-filling surface of the metal sample is provided with the acoustic emission probe, the other surfaces of the metal sample except the hydrogen filling surface are sealed through resin, the acoustic emission probe is connected with the acoustic emission detector, and the electrochemical workstation and the acoustic emission detector are both connected with the computer. According to the method, acoustic emission signals are collected in real time in the electrochemical hydrogen charging process, synchronous analysis is conducted in combination with parameters of the hydrogen charging process, elastic wave signals generated by a local damage event can be captured at the moment of hydrogen-induced microcrack initiation, and therefore real-time recognition of the hydrogen crack initiation moment is achieved; and the accuracy and reliability of hydrogen damage early recognition are improved.

The utility model relates to the technical field of automobile connectors, in particular to an anti-seismic shielding automobile connector structure. According to the technical scheme, the connector comprises a first connecting piece and a second connecting piece, the connecting portion of the first connecting piece and the connecting portion of the second connecting piece are provided with a connecting end and a contact end respectively, and a first shielding layer and a second shielding layer are arranged between the connecting end and the contact end and used for shielding electromagnetism; a fastening connecting part used for assisting fastening connection of the first connecting piece and the second connecting piece is further arranged between the first connecting piece and the second connecting piece. The fastening connecting part comprises a connecting arm connected with the upper surface of the second connecting piece and a second hook clamping head connected with one side of the first connecting piece. According to the utility model, high-efficiency electromagnetic shielding is realized, shock resistance is realized by means of an elastic assembly and a hook clamping structure in the fastening connection part, and signal transmission stability and connection reliability are guaranteed in an omnibearing manner by means of cooperative fastening connection of multiple components in the fastening connection part.

The invention discloses an analog-to-digital converter and an analog-to-digital conversion method, and relates to the field of integrated circuits, and the analog-to-digital converter comprises a small loop which comprises at least one pipeline stage; a major cycle including at least one minor cycle; the assembly line stages are connected in series, and the small cycles are connected in series; the assembly line stage comprises a sampling and holding module, a sub analog-to-digital conversion module, a sub digital-to-analog conversion module and a residual error generator module which are connected in sequence, and further comprises an amplifier which can be arranged behind any one of the modules. An analog-to-digital converter assembly line architecture is designed into a large cycle composed of a plurality of small cycles, each small cycle is composed of multiple stages of assembly lines, and the positions of amplifiers in the stages of assembly lines are different, so that dynamic ranges of different stages are flexibly matched, and signal distortion is prevented.

The application belongs to the technical field of signal transmission, and discloses a method for eliminating analog signal transmission error through digital compensation, which specifically comprises the following steps: in addition to the original signal transmitting circuit part, a signal detecting part composed of MCU, ADC and a communication module is arranged at the signal transmitting end; a signal detecting part composed of MCU and ADC communication module and a control part capable of controlling the signal at the output end to be offset and gain varied are arranged at the signal receiving end; the signal at the receiving end is collected by the MCU to compare with the data of the transmitting end communication module, and the difference between the two data is calculated to obtain the correction value of the amplitude and offset; the gain and offset of the signal are changed by controlling the offset and gain circuit part at the receiving end, so that the transmission error is eliminated, and the gain and offset control method is realized by using DAC, PGA and other components; the deviation of the frequency response can also be calculated according to the requirement, and is corrected by the gain and offset control circuit part.

The invention discloses a visible light communication system and method and multimedia equipment, and relates to the technical field of visible light communication, the visible light communication system comprises a visible light emitting device and a multimedia playing device, and the visible light emitting device is in optical communication connection with the multimedia playing device; the visible light transmitting device is used for determining a dynamic carrier signal according to the data volume parameter of the initial multimedia signal, and processing the initial multimedia signal and the dynamic carrier signal to obtain a visible light signal; and the multimedia playing device is used for processing the visible light signal to obtain a target multimedia signal and outputting playing content according to the target multimedia signal. The reliability of visible light communication in multimedia equipment application can be improved.

The utility model discloses a low-capacitance surge protector, which comprises an LTCC ceramic structure, an external electrode is positioned at the bottom of the LTCC ceramic structure, an internal electrode is positioned in the LTCC ceramic structure, a resonant cavity is arranged in the middle of the internal electrode, a through hole is positioned between the internal electrode and the external electrode, and the through hole is communicated with the resonant cavity. A plurality of groups of LTCC ceramic structures are arranged, and the LTCC ceramic structures are low-dielectric-constant structures with dielectric constants smaller than 10. According to the low-capacitance surge protector provided by the utility model, the LTCC material is utilized, the mutually corresponding electrodes are formed in the product, the gap is formed between the electrodes, and the applied high voltage cannot develop towards the electronic circuit direction by utilizing the discharge characteristic between the corresponding electrodes when the high voltage is applied from the outside; low capacitance is realized by using a low dielectric constant LTCC material, so that signal distortion of an electronic circuit is prevented.

The invention relates to the technical field of analog integrated circuits, in particular to a high-precision temperature sensor temperature-sensing front-end circuit based on a chopping technology, and aims to solve the problems of low-frequency 1 / f noise, operational amplifier input offset voltage drift, band-gap reference temperature drift, limited output driving capability and the like existing at the front end of a traditional temperature sensor. The front-end circuit comprises a chopping band-gap reference source circuit, a chopping buffer circuit and a two-phase non-overlapping clock generation circuit, wherein the chopping band-gap reference source circuit adopts a parasitic bipolar PNP transistor with an emitter junction area ratio of 8: 1 as a temperature sensing device, and a high-gain chopping folded cascode operational amplifier is embedded in the chopping band-gap reference source circuit; and stable positive temperature coefficient voltage and low-temperature drift reference voltage are generated. Noise and maladjustment are inhibited from the system architecture level, the temperature measurement precision can reach the sub-degree centigrade level, the loading capacity is high, the method is achieved based on the standard CMOS technology, a special technology and complex temperature calibration are not needed, and the method has the advantages of being low in cost, high in stability and large-scale integration.

The invention relates to the technical field of optical communication, in particular to an optical fiber beam splitter packaging structure and a VCSEL comprising the same. The optical fiber beam splitter packaging structure comprises an optical fiber beam splitter body, a buffer layer, a heat conduction layer and a rigid layer, the buffer layer wraps the optical fiber beam splitter body, the heat conduction layer wraps the buffer layer, and the rigid layer wraps the heat conduction layer. The buffer layer absorbs mechanical stress, absorbs shock, prevents impact, and protects the optical fiber beam splitter body from being damaged by external mechanical force; the heat conduction layer is used for heat dissipation, and it is ensured that the optical fiber beam splitter body can effectively conduct out heat in a high-power or high-temperature environment. The rigid layer improves the physical strength, prevents external impact, extrusion or wear, and ensures the mechanical stability and durability of the whole packaging structure. Starting from the two aspects of mechanics and thermotics, the optical fiber beam splitter packaging structure is optimized, so that the optical fiber beam splitter body generates a stable beam splitting ratio, finally, the VCSEL generates stable output, and the VCSEL has a good application prospect in the technical field of optical communication.

The invention belongs to the technical field of wireless communication and information security, and particularly relates to a multi-user encrypted data transmission method based on DCSK and CDMA, which comprises the following steps: constructing a DSCK-CDMA system, converting a bit signal sent by each user into an encrypted signal by a transmitting end through a chaotic signal and pseudo-random code combination module, and transmitting the encrypted signal to a receiving end; combining the encrypted signals of the plurality of users into a multi-user transmission signal and then sending out the multi-user transmission signal; transmitting a multi-user transmission signal by adopting an additive white Gaussian noise channel model; a receiving end carries out time-frequency synchronization processing on the received receiving signal through a time-frequency domain synchronization module; the interference suppression and multi-user detection module carries out reduction processing on the synchronously processed receiving signals; according to the invention, efficient and safe multi-user data transmission can be realized in a complex wireless communication environment.

The invention discloses a method and a device for detecting multi-component gas in tail gas in an alcohol-based fuel combustion process. The method comprises the following steps: sequentially performing alkali liquor soaking, acid liquor coarsening and ultrasonic cleaning on a ceramic tube, preparing double-component slurry, and then performing dispensing coating and sintering in an oxygen atmosphere to obtain a double-coating gas sensitive sensor; a gas sensor is connected with a single chip microcomputer and a signal processing circuit, a display module and a reset circuit are configured, and a temperature control heating system is constructed to achieve temperature adjustment of the sensor. Acquiring initial parameters of the gas sensor, establishing a kinetic equation, introducing a compensation function and compensation parameters, and implementing signal sampling processing to obtain a gas concentration value; a platinum resistor temperature sensor is adopted to collect temperature in real time, a baseline drift algorithm and a correction model are established, and zero point and range calibration is carried out regularly through standard gas. Through the scheme of the invention, cross sensitivity and baseline drift can be suppressed, and the detection accuracy is improved.

The application provides an integrated quantum bit output link and relates to the technical field of input / output device links. The application aims to solve the problem that the space is limited during quantum bit transmission, and efficient heat treatment is difficult to achieve. The integrated quantum bit output link comprises three circulators, a load, a Josephson parametric amplifier and a connector. The load is arranged on the three circulators and is used for absorbing reverse transmission signals. The Josephson parametric amplifier is internally provided with the connector, and the Josephson parametric amplifier is connected with the three circulators through the connector. The integrated quantum bit output link can maintain good performance in a super low temperature environment, achieves the effects of high integration, high heat conduction and magnetic shielding, is easy to assemble and mass-produced, and effectively reduces the volume of the integrated quantum bit output link.

The utility model relates to mechanical detection technical field especially relates to a kind of probe mounting bracket for shaft body vibration detection, it includes the rotating shaft body to be measured and the bearing bush surrounded in rotating shaft body, the side surface of bearing bush is fixed with two mounting brackets, each the mounting bracket is fixed with one vibration probe, the vibration probe is perpendicular to the circumferential surface of rotating shaft body and is close not contact, the axis of two the vibration probe is perpendicular to each other.The utility model is fixed with bearing bush and is not loose and moves under vibration as the mounting bracket of vibration probe installation base, the axis of two vibration probes after installation coincides with the radial of rotating shaft body, and two the vibration probe is perpendicular to each other, so that the two measuring points on the rotating shaft body checked are also perpendicular to each other, to improve vibration detection accuracy.

The invention discloses an instantaneous power control method for a permanent magnet synchronous generator without a position sensor. A direct current power supply system comprises a permanent magnet synchronous motor, a power electronic converter and a control framework. The permanent magnet synchronous motor works in a power generation state, the rotor is driven to rotate through the engine or the transmission device connected to the engine, the stator winding cuts a magnetic field generated by the rotor permanent magnet, and then alternating electromotive force is induced in the stator winding. The control architecture controls the power electronic converter to work in a rectification state and provides stable voltage output for the load. According to the control method provided by the invention, the sliding-mode observer, the phase-locked loop and instantaneous power control are combined, and non-inductive observation of the rotor position and decoupling control of active power and reactive power are realized. Moreover, the size of the permanent magnet synchronous generator is reduced, the problem of signal failure easily occurring under the severe working conditions of vibration, high temperature and the like is effectively avoided, and the reliability of long-term operation of the system is improved.

The invention relates to the technical field of railway communication monitoring, provides a remote monitoring and environment control method and device of a GSM-R system, and solves the problems of low intelligent level and poor security response efficiency of environment monitoring of a railway communication base station. The method comprises the following steps: collecting original signals and event data of each sensor in a base station environment where the system is located; performing optical coupling isolation on the digital signal to generate first pre-processing data, and performing program control amplification on the analog signal to generate second pre-processing data; fusing the two types of data and the event data into a monitoring data set; mining an abnormal mode set from the data set by using a time sequence mode mining algorithm; constructing an event inference graph based on the set, calculating a threat evaluation value by analyzing an event association relationship, and generating a corresponding security strategy when the threat evaluation value exceeds a threshold value; and packaging the strategy instruction into a special protocol data packet, issuing the special protocol data packet to a base station environment controller, and coordinating execution equipment. According to the invention, the intelligent level and security response efficiency of railway communication base station environment monitoring are improved.

This application discloses an audio processing method, device, and storage medium, belonging to the audio field. The method includes: filtering the left and right channel signals of the original audio using a first low-pass filter to obtain low-frequency left and right channel signals; the first low-pass filter is a finite impulse response low-pass filter with minimum phase property; filtering the left and right channel signals of the original audio using a first high-pass filter to obtain high-frequency left and right channel signals; and mixing the high-frequency left and right channel signals with the low-frequency left and right channel signals after sound field adjustment to obtain a stereo output signal. This solution achieves flexible sound field adjustment while completely solving the problem of blurred sound image positioning caused by nonlinear phase distortion in traditional solutions, as well as the problem of auditory imbalance caused by changes in low-frequency energy distribution, thereby achieving a high-fidelity and high-reproducibility stereo sound field processing effect.