395 results about "External noise" patented technology

The invention relates to a transformer multi-physics field coupling numerical simulation method and device and a storage medium. The method comprises the following steps: performing coupling calculation on a target working condition by using an electromagnetic, heat, flow and force coupling calculation model of a transformer to obtain transformer loss data and temperature rise data; mapping the temperature rise data to a transformer electromagnetic and force coupling calculation model by using a grid node data mapping method to serve as an initial value, and performing coupling calculation on a target working condition to obtain dynamic data of an internal structural member of the transformer; performing fast Fourier transform on the dynamic data in a preset frequency range to obtain dynamic data under each frequency; and mapping the temperature rise data and the dynamic data under each frequency to a transformer sound and force coupling calculation model as initial values, and carrying out coupling calculation on a target working condition to obtain transformer oil tank vibration and external noise data. Compared with the prior art, the method has the advantages that the calculation amount is effectively reduced, and the accuracy of predicting the internal state of the transformer is improved.

The invention discloses an MFL signal reconstruction method based on channel mutual fusion and a global attention mechanism, relates to the technical field of nondestructive testing, and particularly discloses a magnetic flux leakage signal MFL reconstruction method based on a neural network. In order to solve the problem of interference of external noise on defect characteristic signals, a signal channel recombination, shuffling and aggregation optimization method based on CycleGAN is adopted, a GSoP optimization covariance matrix is introduced, through PSNR and LPIPS index comparison, the reconstruction precision of the MFL defect signals can be greatly improved, and the reconstruction precision of the MFL defect signals is improved. And the data processing precision and speed are improved (the time cost and the space cost of data processing are reduced), so that the defect detection efficiency is improved.

A measurement system for determining a noise figure of a device under test is described. The measurement system determines a first total error power based on the output signal by a first noise canceling technique, wherein the first total error power includes systematic errors originating in the device under test and in the measurement system. The measurement system determines a second total error power based on the output signal by a different, second noise canceling technique. The second total error power includes systematic errors originating in the measurement system. The second total error power further includes noise originating in the device under test and in the measurement system outside of the measurement instrument. The measurement system is configured to subtract the first total error power from the second total error power, thereby obtaining an external noise power.

The invention relates to the technical field of information security and random number generation, and particularly discloses a method and a system for generating a random number by utilizing mobile phone holding micro-vibration and touch pressure, and the random number is generated by collecting physical behavior characteristics when a user holds a mobile terminal within preset time and combining sensor signal processing and a randomness extraction algorithm. The random number generation does not need external hardware support, the randomness is higher, the operation is simple and convenient, and the problems of insufficient randomness and complex operation caused by dependence on an external noise source or specific input in the prior art are solved. According to the method, the dependence on the external environment or additional hardware is avoided, the security, unpredictability and practicability of random number generation are remarkably improved through a multi-level security protection mechanism, reliable technical support is provided for the field of modern information security, and the method has the advantages of being easy to implement, low in cost and high in security and has wide application prospects. The method is suitable for popularization and application in multiple fields of mobile payment, Internet of Things, games and the like.

A communications headset includes one or more directional speakers mounted in left and right temple housings positioned near a wearer's ears, with acoustic channels within the temple housings configured to direct sound waves toward the ear canals. The temple housings form an open-ear configuration, allowing external noises to reach the ears unobstructed. Each directional speaker is acoustically coupled to a contoured channel that delivers focused audio to the wearer's ear with minimal sound wave leakage. An in-ear speaker, magnetically secured and tethered to the temple housing, provides optional noise-isolated listening. A user-controlled selection switch allows a wearer to toggle between open-ear and in-ear modes. The headset also includes a boom microphone, volume controls, and USB charging and communication ports.

The invention relates to the field of optical fiber sensing, in particular to a DAS-based audio data acquisition method and system, electronic equipment and a storage medium. Acquiring real-time audio data and real-time energy of the to-be-measured optical cable at the current sampling time point; updating the reference noise threshold value through the reference energy in the real-time audio data; acquiring a starting point of an effective signal in the real-time audio data according to the real-time energy and the updated reference noise threshold value, and amplifying the real-time audio data collected behind the starting point; and taking the amplified real-time audio data as effective audio data. Compared with the prior art, the method has the advantages that the reference noise threshold value containing the system noise is obtained, the reference energy containing the external noise is used for updating the reference noise threshold value, then the effective signal can be obtained based on the updated reference noise threshold value and the real-time energy, calculation is simple, and no complex algorithm or extra hardware is needed.

The invention discloses a wind noise simulation method, device and equipment based on a commercial vehicle and a medium. The method comprises the following steps: constructing a whole vehicle grid model matched with a target commercial vehicle to be subjected to noise simulation; importing the whole vehicle grid model into a pre-constructed blank simulation model framework to obtain a basic simulation model; setting free attribute parameters and material attribute parameters of the basic simulation model according to regional noise characteristics and material attributes of each key region in the whole vehicle grid model to obtain an external noise simulation model and an internal vocal cavity simulation model; and operating the external noise simulation model and the internal vocal cavity simulation model to obtain a wind noise simulation result of the target commercial vehicle. According to the embodiment of the invention, a comprehensive wind noise simulation result is provided, a powerful basis is provided for vehicle noise control and optimization, analysts are helped to identify noise sources and evaluate the effect of noise control measures, and vehicle design is optimized to reduce the noise level.

The utility model discloses a butterfly-shaped laser test fixture with a shield, which comprises a first shell, and a second shell is arranged at the bottom of the first shell. The first shell is provided with a clamping unit which is used for guaranteeing that pins at all positions are uniformly stressed in the testing process of the butterfly-shaped laser, a temperature stabilizing unit which is used for cooling the butterfly-shaped laser in the testing process, and a protection structure which is used for shielding the influence of external noise and radiation on the butterfly-shaped laser in the testing process. Pins of the butterfly-shaped laser can be uniformly pressed and communicated with the control circuit board through the clamping unit, and the butterfly-shaped laser is wrapped with the protection structure, so that the influence of external noise and radiation on the butterfly-shaped laser is shielded in the testing process; the temperature stabilizing unit is used for dissipating heat of the tested butterfly-shaped laser; the accuracy of test data of the butterfly-shaped laser in the test process is greatly improved, and the technical problem that the accuracy of test data of an existing butterfly-shaped laser in the test process is still low is solved.

A magnetic shield reduces external noise in a chamber including a target and at least one electromagnet for copper physical vapor deposition (PVD). The shield may have a thickness in a range from approximately 0.1 mm to approximately 10 mm to provide sufficient protection from radio frequency and other electromagnetic signals. As a result, copper atoms in the chamber undergo less re-direction from external noise. Additionally, even when hardware failure occurs during PVD (e.g., an electromagnet malfunctions, a wafer stage is not level, and / or a flow optimizer induces too much shift, among other examples), the copper atoms are less susceptible to small re-directions from external noise. As a result, back end of line (BEOL) and / or middle end of line (MEOL) conductive structures are formed in a more uniform manner, which increases conductivity and improves lifetime of an electronic device including the BEOL and / or MEOL conductive structures.

This present invention relates to a single body air treatment system for recreational vehicles and is a combination of components working in a scheme so to provide heating, cooling, dehumidification, ventilation, air-purification, heavy-duty drying, into a single body. The system comprising of a cooling air plant having a refrigerating cycle (105,107,108,109) and air heat exchangers acting with electricity and a heating plant having an incorporated fuel / Natural-Gas burner (118,119) acting as air furnace. The system operates heating and cooling simultaneously with in the same air-flow and provides air purification through an antibacterial electrical device. The system also integrates extra pipes to produce extra hot-water in winter while the system operates in heating. The system is integrated with a dedicated resonator chamber to minimize the external noise produce by extraction blowers.

The utility model relates to the technical field of calcium silicate boards, in particular to a calcium silicate board waterproof structure which comprises a structure body, a first calcium silicate board layer is arranged at the top of the structure body, a colored surface is arranged at the bottom of the first calcium silicate board layer, an anti-corrosion layer is arranged in the structure body, a drying layer is arranged in the anti-corrosion layer, and a fireproof frame is arranged in the drying layer. A silencing structure is arranged in the fireproof frame and mainly comprises a silencing layer, a sound transmission hole, a silencing opening, silencing cotton and a silencing medium. Through the arrangement of the sound transmission holes, the silencing openings, the silencing cotton and the silencing medium, noise transmission can be reduced through the silencing layer, external noise is absorbed through the sound transmission holes, the absorbed noise is transmitted to the interior of the sound absorption medium, and the absorbed noise is circularly transmitted and reduced through the silencing holes in the sound absorption medium; and through the silencing cotton, the transmission of noise can be reduced, the volume of the noise is effectively reduced, and the sound insulation effect of the sound reduction layer is ensured.

A magnetic shield reduces external noise in a chamber including a target and at least one electromagnet for copper physical vapor deposition (PVD). The shield may have a thickness in a range from approximately 0.1 mm to approximately 10 mm to provide sufficient protection from radio frequency and other electromagnetic signals. As a result, copper atoms in the chamber undergo less re-direction from external noise. Additionally, even when hardware failure occurs during PVD (e.g., an electromagnet malfunctions, a wafer stage is not level, and / or a flow optimizer induces too much shift, among other examples), the copper atoms are less susceptible to small re-directions from external noise. As a result, back end of line (BEOL) and / or middle end of line (MEOL) conductive structures are formed in a more uniform manner, which increases conductivity and improves lifetime of an electronic device including the BEOL and / or MEOL conductive structures.

The invention discloses a whole vehicle aerodynamic noise prediction method, device and equipment, a storage medium and a product. The method comprises the following steps: determining an aerodynamic noise prediction result of a to-be-predicted commercial vehicle under an external noise source; the noise source outside the automobile comprises an air conditioner air outlet and a pressure release valve. Performing aerodynamic noise transmission analysis on a sealing system and a sound insulation system of the commercial vehicle to be predicted according to the noise prediction result of the noise source outside the vehicle, and determining an aerodynamic noise transmission result; according to the aerodynamic noise transmission result and the aerodynamic noise prediction result of the air conditioner air outlet and the pressure release valve, aerodynamic noise transmission analysis is conducted on a cockpit sound absorption system of the to-be-predicted commercial vehicle, and the aerodynamic noise response prediction result of the whole to-be-predicted commercial vehicle at the human ears is determined. According to the technical scheme provided by the embodiment of the invention, the accurate prediction, simulation or simulation of the aerodynamic noise response of the commercial vehicle to the human ears of the driver in the vehicle driving process is improved.

The invention relates to a manufacturing method of a high-heat-insulation and sound-insulation type PVB (Polyvinyl Butyral) intermediate film for an automobile large skylight, and belongs to the technical field of laminated glass material preparation. A common PVB resin layer A, a high-damping-coefficient sound-insulation resin layer B, a heat-insulation composite resin layer C, a high-damping-coefficient sound-insulation resin layer B and a common PVB resin layer A are prepared into the high-heat-insulation sound-insulation type PVB intermediate film in sequence by adopting a five-layer composite co-extrusion process, a multi-layer structure is adopted, and particularly, the high-damping-coefficient sound-insulation resin layer B is used, so that the propagation of sound waves can be effectively reduced, and the sound-insulation performance of the PVB intermediate film is improved. The large skylight of the automobile can effectively isolate external noise and improve the riding comfort in the automobile during high-speed driving or urban traffic, vanadium dioxide and graphene are compounded through the C-layer heat insulation composite resin, graphene has a large specific surface area, the dispersity of vanadium dioxide can be improved, and the heat insulation performance of the automobile is improved. Vanadium dioxide can improve the reflectivity of near-infrared light when the environment temperature rises.

The invention relates to a fabric friction sound testing device which comprises a noise reduction box, an auxiliary friction table, an objective table, a weight increasing weight, a drafting device and a traction rope. One side of the noise reduction box extends outwards to form a noise elimination channel; the auxiliary friction table is fixed to the inner bottom of the noise reduction box. The objective table is placed on the auxiliary friction table; the weight increasing weight is used for being placed in the objective table. The drafting device is arranged outside the noise reduction box; the traction rope penetrates through the silencing channel, one end of the traction rope is connected with the objective table, and the other end of the traction rope is connected with the drafting device; and the sound acquisition device is fixed in the noise reduction box. The traction device is arranged outside the noise reduction box, the bottom noise can be effectively reduced fundamentally, the accuracy of a test result is improved, one side of the noise reduction box extends outwards to form the noise elimination channel, the traction rope penetrates through the noise elimination channel, and the noise elimination channel is arranged, so that the noise reduction effect is improved. The noise reduction box can effectively reduce the influence of holes formed in the path of the traction rope on the noise reduction box on the sound insulation effect, avoids external noise interference, and ensures the accuracy of a test result.

The invention discloses a fault diagnosis method based on multi-source data fusion and a deep optimization network, and belongs to the technical field of wind turbine generator bearing fault diagnosis, and the method comprises the steps: obtaining multi-source sensor data of a wind turbine generator under different working conditions, and carrying out the preprocessing of the collected multi-source sensor data; designing a multi-source data feature fusion algorithm based on correlation variance contribution, fusing the preprocessed multi-source sensor data, and extracting a fuzzy entropy value from the fused multi-source sensor data as a feature vector input into the intelligent fault diagnosis model; constructing an intelligent fault diagnosis model DBE based on the optimized deep belief network, and training the DBE by adopting a greedy learning method and a hippocampus optimization algorithm; and performing fault diagnosis based on the trained DBE. According to the method, the problems of signal abnormal value and data missing and fault diagnosis reliability under the influence of variable working conditions and external noise interference of the wind turbine generator are solved, and the fault diagnosis accuracy of the wind turbine generator is improved.

The invention discloses a noise and vibration energy acquisition system and a dynamic monitoring method thereof, and belongs to the technical field of energy conversion, the noise and vibration energy acquisition system comprises a sound input unit, a monitoring shell, an energy conversion unit, a vibration sensing unit and a storage control unit; an acoustic resonance cavity is arranged in the monitoring shell, and a vibration sensing unit, an energy conversion unit and a sound input unit are arranged in the acoustic resonance cavity from bottom to top; the vibration sensing unit and the energy conversion unit are electrically connected with the storage control unit respectively; the vibration sensing unit is used for acquiring an external vibration signal and generating an alternating current signal, the energy conversion unit is used for acquiring an external noise signal and generating an alternating current signal, and the storage control unit is used for respectively acquiring the alternating current signals generated by the vibration sensing unit and the energy conversion unit; the generated electric energy is supplied to an external load and the intensity of external vibration and noise is obtained. Synchronous acquisition of noise and vibration energy can be realized, and real-time dynamic monitoring of external noise and vibration intensity can be realized.

The utility model relates to the technical field of automobiles, in particular to a top cover front cross beam assembly and an automobile, and aims to solve the problem that the NVH (Noise Vibration and Harshness) performance of an existing automobile is difficult to effectively optimize while the structural strength of an automobile body is ensured. Therefore, the top cover front cross beam assembly comprises an outer plate, an inner plate and a reinforcing plate arranged between the outer plate and the inner plate, the reinforcing plate comprises a middle area and end areas located on the two sides of the middle area in the length direction of the reinforcing plate, and a first cavity and a second cavity which are separated are formed between the end areas and the inner plate. The first cavity and the second cavity are distributed in the width direction of the reinforcing plate, and a third cavity is formed between the middle area and the inner plate. Therefore, the structural strength and the collision safety of the whole vehicle body can be remarkably improved, the propagation path of sound waves in the cross beam can be reduced, the resonant frequency is reduced, external noise and vibration are effectively prevented from being transmitted into a vehicle cabin, and the NVH performance is remarkably optimized.

The utility model discloses an intelligent voice control camera, and belongs to the field of voice cameras. An intelligent voice control camera comprises a base and a camera body arranged at the bottom of the base, the top of the base is provided with a sound receiving structure, the sound receiving structure comprises an audio collector fixedly connected to the top of the base, the output end of the audio collector is bidirectionally and electrically connected with the input end of the camera body, and the top of the base is provided with an extension part. The extension part is arranged on the surface of the audio collector in a surrounding manner, and the top of the extension part is fixedly connected with an extension frame; according to the utility model, external noise is shielded by using the surface shape through the extension part and the extension frame, so that an audio instruction enters the extension part and the extension frame through the openings in the surfaces of the extension part and the extension frame to be reflected and is received and confirmed by the audio collector, the influence of noise generated in the surrounding environment on instruction identification is reduced, and the identification accuracy is improved.

The utility model discloses a bluetooth earphone with a noise reduction function, which comprises a charging bin and a dustproof cover, a rubber cover is embedded at the lower part in the charging bin, a charging port is arranged above the rubber cover, the dustproof cover is hinged above the charging bin, and a magnet II is adhered at the lower part in the dustproof cover. Compared with an existing Bluetooth earphone, the Bluetooth earphone with the noise reduction function has the advantages that the rubber cover is covered, the dustproof cover and the charging bin are closed, and the sealing ring below the dustproof cover is tightly attached to the charging bin under the magnetic action of the first magnet and the second magnet, so that charging and earphone taking are facilitated, water and dust can be prevented from entering the earphone to damage the earphone, and the earphone is convenient to use. When entering the earphone, external noise is weakened by the vacuum bubble, then part of the noise is reflected by the sound insulation plate, part of the noise is absorbed by the sound absorption cotton wrapping the loudspeaker, the sound is transmitted out through the sound transmission pipe, the double-layer hollow structure of the sound transmission pipe can effectively isolate the external noise, and the filter screen prevents dust and other impurities from entering.

The utility model relates to the technical field of ceramic composite boards, in particular to a wear-resistant ceramic composite board which comprises a protective surrounding edge, a mounting structure is arranged on the inner side of the protective surrounding edge, wear-resistant assemblies are arranged in the mounting structure, and anti-seismic mechanisms and protective assemblies are arranged on the inner sides of the wear-resistant assemblies on the upper side and the lower side. The protection assembly is located on the inner side of the anti-seismic mechanism. According to the utility model, the protection assembly is arranged, when the protection assembly is used, the protection assembly is composed of a resin layer, a metal fiber layer, a waterproof layer, a heat preservation layer, a sound insulation plate and a shaping honeycomb plate, and the metal fiber layer is arranged in a crossed manner, so that the strength and the toughness of the assembly are enhanced, and excellent impact resistance and wear resistance are ensured in the use process; the arrangement of the waterproof layer and the heat preservation layer not only improves the waterproof and heat preservation performance of the assembly, but also effectively prevents the damage caused by damp and temperature change of the internal structure, thereby prolonging the service life, and the application of the sound insulation plate effectively weakens the external noise.

A noise decibel testing method and device based on a smart wearable device, comprising: obtaining a PCM value of an audio signal of the smart wearable device and converting the PCM value into an RMS value; converting the RMS value into a voltage value, and then converting the voltage value into a sound pressure value; calculating a noise decibel of the audio signal according to the sound pressure value to obtain a first noise decibel value; obtaining a noise decibel compensation value by fitting a noise compensation curve; and compensating the first noise decibel value based on the noise decibel compensation value to obtain an actual noise decibel value tested by the smart wearable device. According to the audio signal of the smart wearable device, the first noise decibel value is obtained, the noise decibel compensation value is obtained by fitting the noise compensation curve, the first noise decibel value is compensated, and the actual noise decibel value measured by the smart wearable device is obtained, thereby solving the problem that the existing special instrument for testing noise decibel cannot be integrated into a smart watch and thus cannot directly test an external noise decibel value.

A system for vehicle exterior noise reduction, comprising: a measuring component for measuring an amplitude and a phase of an exterior noise, the exterior noise propagating at least partially in a first direction from at least one exterior noise source of a vehicle and having an acoustic transmission path, wherein the exterior noise propagates at least partially below a bottom of the vehicle; a computing component for computing an out-of-phase signal based at least in part on the measured amplitude and phase of the exterior noise; and a generating component for generating an out-of-phase sound based at least in part on the computed out-of-phase signal, the out-of-phase sound configured to cancel the exterior noise, wherein the generated out-of-phase sound propagates at least partially in the first direction of the acoustic transmission path.

The present invention discloses a high-precision magnetic modulator signal processing method based on adaptive filtering and noise compensation, and relates to the field of signal processing technology. This method obtains and preprocesses the initial output voltage signal of the high-precision magnetic modulator, then reanalyzes it based on an adaptive filtering algorithm, a noise compensation algorithm, and comprehensive processing to obtain a processed output voltage signal. The present invention, through the adaptive filtering algorithm and the noise compensation algorithm, can effectively improve the signal accuracy and anti-interference capability of the high-precision magnetic modulator. Because the adaptive filtering algorithm adjusts the filtering parameters in real time to adapt to noise interference in different environments, it significantly reduces the impact of external noise on signal measurement. At the same time, the noise compensation algorithm further reduces the noise component in the signal, improving the purity and reliability of the measured data, thereby enabling the signal processing method to maintain high-precision output under complex working conditions.

The present application relates to the technical field of electronic devices, and particularly relates to an electric connector, which comprises an insulating body, two rows of terminals, a plurality of inner shielding sheets and two outer shielding sheets; the insulating body is provided with two side walls and a butt joint groove between the side walls; the terminal comprises a main body, an elastic arm and a pin, and the elastic arm is provided with a contact part protruding into the butt joint groove; each row of terminals comprises a plurality of signal terminal pairs and two ground terminals on both sides of each signal terminal pair; each inner shielding sheet is integrally connected with the two ground terminals on both sides of the corresponding signal terminal pair and is located at the inner side of one row of terminals; each outer shielding sheet is located at the outer side of one row of terminals and contacts the ground terminal. In the present application, each signal terminal pair is located between the inner shielding sheet and the outer shielding sheet, which can effectively reduce the interference of internal and external noise on the signal terminal pair, and the inner and outer shielding sheets are both electrically connected with the ground terminal, so that multiple common grounds are achieved, the resonance effect is effectively improved, and the high-frequency high-speed signal transmission performance is improved.

The utility model relates to the technical field of vehicle interior trim parts, and particularly discloses a vehicle interior trim door plate assembly, a vehicle door and a vehicle. The interior trim door plate assembly comprises an outer layer plate, an inner layer plate, a reinforcing assembly and a sound insulation assembly; the inner-layer plate comprises a plate body and a connecting part, the connecting part is arranged at the edge of the plate body, the connecting part and the plate body form a containing cavity with an opening, and the outer-layer plate is connected with the connecting part and seals the opening; the reinforcing assembly is arranged in the containing cavity, connected with the plate body and abuts against the inner wall, located in the containing cavity, of the connecting part. The sound insulation assembly is arranged in the containing cavity, the sound insulation assembly and the containing cavity are arranged in a profiling mode, and the two opposite sides of the sound insulation assembly are connected with the reinforcing assembly and the outer layer plate correspondingly. According to the reinforcing assembly, the bending resistance and the impact resistance of the interior door plate assembly can be enhanced, and therefore the service life is prolonged; and the sound insulation assembly in profiling design with the containing cavity can reduce transmission of external noise, and the sound insulation effect is improved.

The invention discloses an acoustic detection method based on acoustic difference, an acoustic difference device and an acoustic detection system. The method comprises the following steps: providing at least one acoustic differential pair; the acoustic differential pair comprises a first piezoelectric sensing unit and a second piezoelectric sensing unit which are opposite in polarization direction. Detecting an acoustic signal by using the acoustic differential pair to obtain an acoustic differential signal; wherein the acoustic differential signal comprises two paths of electric signals; the two paths of electric signals are obtained by carrying out acoustic-electric conversion on acoustic signals by the first piezoelectric sensing unit and the second piezoelectric sensing unit; and transmitting the acoustic differential signal to a differential processing module for differential operation so as to suppress the external noise coupled to the transmission path and obtain a detection signal after noise suppression. According to the method, external noise can be suppressed from a signal source without depending on a complex hardware structure or a software algorithm, and the signal-to-noise ratio, the measurement precision and the robustness of the piezoelectric sensing system in complex environments such as strong electromagnetic interference and mechanical vibration are remarkably improved.

The invention discloses a mobile phone personalized sound effect adjusting method based on auricle shape recognition, which comprises the following steps: acquiring three-dimensional shape data of a user auricle through a mobile phone camera, and extracting key parameters such as contour feature points, concave depth and reflection angle of the auricle; calculating a propagation path, a reflection characteristic and a resonance characteristic of sound waves in auricles by using an acoustic modeling technology, and generating a personalized sound effect optimization model; calculating auricle sound insulation characteristics based on an acoustic modeling result, wherein the auricle sound insulation characteristics comprise external noise shielding capability and specific frequency band sound wave absorption capability; when the user answers the call, audio optimization parameters are dynamically generated in combination with the spectral characteristics of the surrounding noise, the frequency band characteristics of the call audio and the personalized sound effect optimization model; dynamically adjusting the audio output setting of the mobile phone based on the audio optimization parameters; according to the method, deep combination of the auricle form and audio optimization is realized, and the personalized auditory experience of the user is improved.

The present application discloses a partial discharge detection method, device, electronic device, and storage medium. The method and device are applied to an electronic device, specifically for collecting acoustic signals generated by partial discharge of a high-voltage electrical device to be detected to obtain acoustic data; based on the acoustic data, high-frequency acoustic signals are extracted through high-pass filtering, and the power spectral density of the energy envelope of the high-frequency acoustic signals is calculated; based on the energy distribution of the power spectral density of the energy envelope at a specific frequency, the discharge type of the high-voltage electrical device is identified. This solution is robust to external noise interference and effectively overcomes the problem of noise sensitivity existing in traditional partial discharge detection methods based on acoustic emission technology (such as PRPD pattern analysis), thereby significantly improving the detection ability for weak discharge signals.

The invention discloses a high-precision magnetic modulator signal processing method based on adaptive filtering and noise compensation, and relates to the technical field of signal processing. According to the high-precision magnetic modulator signal processing method based on adaptive filtering and noise compensation, an initial output voltage signal of a high-precision magnetic modulator is obtained and preprocessed, analysis is carried out again based on an adaptive filtering algorithm, a noise compensation algorithm and comprehensive processing, and a processed output voltage signal is obtained; through the adaptive filtering algorithm and the noise compensation algorithm, the signal precision and the anti-interference capability of the high-precision magnetic modulator can be effectively improved, the adaptive filtering algorithm adjusts filtering parameters in real time so as to adapt to noise interference in different environments, the influence of external noise on signal measurement is remarkably reduced, and the measurement accuracy is improved. Meanwhile, the noise compensation algorithm further reduces the noise component in the signal, and improves the purity and reliability of the measurement data, so that the signal processing method can maintain high-precision output under complex working conditions.