16results about How to "Reduce environmental noise" patented technology

The invention relates to the technical field of bearing fault diagnosis, in particular to a bearing fault diagnosis method based on multi-source resonance component feature fusion CNN, and the method comprises the following steps: obtaining the original vibration data of multiple sensors, carrying out the noise reduction of an original signal, carrying out the resonance sparse decomposition of the vibration signal after noise reduction, and obtaining a multi-source resonance component feature fusion CNN; the method comprises the following steps: acquiring a vibration signal of each sensor to obtain a high-resonance component and a low-resonance component in the vibration signal of each sensor, simultaneously performing symmetric point mode analysis on the high-resonance component and the low-resonance component of each sensor to obtain a multi-source resonance component feature fusion image, and finally constructing a bearing fault intelligent diagnosis model by combining a convolutional neural network and taking a fault feature fusion image as input. Compared with other bearing fault diagnosis methods, the bearing fault diagnosis method has the advantages that the accuracy is improved, a higher recognition effect on the rolling bearing fault under the variable load is achieved, and meanwhile the intelligent diagnosis model training process has the high convergence speed and the high robustness.

The invention provides an eyeshade capable of pressing acupuncture points to promote sleep. The eyeshade comprises an eyeshade body and an eyeshade head band assembly. The eyeshade comprises an eyeshade body, a middle U-shaped convex block and a top convex block, the eyeshade body is used for shading the eyes and is positioned through the middle U-shaped convex block of the eyeshade and the concave position of the nose bridge, at the moment, the top convex block of the eyeshade is just pressed on the Yintang acupoint, and the two sides of the eyeshade are each provided with two side holes connected with the eyeshade head band assembly; the eyeshade head band assembly comprises an eyeshade head band, earplugs and silica gel round head protruding blocks, the eyeshade head band assembly and the eyeshade are connected in a bonding mode through hook-and-loop fasteners, the eyeshade head band and the ears are positioned through two ear openings, and the earplugs are arranged according to the distance between the sleeping acupoint and the ears. The vacant positions where the silica gel round head protruding blocks on the two sides of the eyeshade head band are located are adjusted to be aligned with the peaceful acupoint to press the peaceful acupoint, the earplugs are used for reducing noise of ears, and at least one mouth-shaped notch is formed in the eyeshade head band and the head body of a user to achieve the limiting effect.

The invention provides a method for eliminating audio noise based on an SOX library, an audio playing terminal and a storage medium. The method comprises a noise reduction model file generation step and an audio noise reduction step. The method has the beneficial effects that more process improvements on intelligent hardware are not needed, the environmental noise of an equipment end is greatly reduced by depending on the performance of a mobile phone, the hardware process cost is saved, and the experience of a real-time audio call process is improved.

The utility model relates to the technical field of servers, in particular to a server cluster immersion type magnetic fluid heat dissipation device, which comprises a sealed immersion tank, a plurality of magnetic fluid heat dissipation devices, a plurality of magnetic fluid heat dissipation devices and a plurality of heat dissipation devices, and is characterized in that the immersion tank is internally provided with a plurality of servers; the immersion tank is filled with magnetic fluid; the two end faces of the immersion tank are provided with connectors, and the connectors of the two end faces of the immersion tank are communicated with the two ends of the circulating pipe respectively; an integrated magnetic field generator is arranged around the immersion tank, the integrated magnetic field generator provides a magnetic field for the immersion tank, and the magnetic field provides flowing power for the magnetic fluid in the immersion tank. The server cluster is immersed in the magnetic fluid, so that the heat dissipation medium is in full contact with the servers, and higher equipment heat exchange efficiency is obtained.

The invention discloses a weak near-infrared signal detection device and method in gravitational wave detection, and solves the problems that for detection of extremely weak near-infrared signals, an existing detection method is easy to lose signals and is interfered by noise, and a detector is low in response rate in a near-infrared band, so that the detection precision is low. According to the invention, through a series-parallel connection combination mode, multi-stage gating gates are arranged. The optimal transmission path can be flexibly selected according to different transmission requirements, the data transmission efficiency and speed are improved, and the flexibility of the system is improved. Due to the cascade design of the multiple gating gates, the reliability of the system is improved, the failure rate of the system is reduced, and the stability and continuity of data transmission are guaranteed.

The present invention relates to a solar power supply system for vehicle / ship AC air conditioner, which comprises a DC generator, a solar panel, a starting battery, a solar charging inverter integrated machine and an AC air conditioner, wherein the solar charging inverter integrated machine comprises a solar charger, whose input end is connected to the solar panel and whose output end is connected to the starting battery; an inverter, whose input end is connected to the output end of the DC generator, the starting battery and the solar charger; an output transformer, whose input end is connected to the output end of the inverter and whose output end is connected to the AC air conditioner; and an MCU controller, which is connected to the solar panel, the solar charger and the inverter. The present invention can reduce the fuel consumption of vehicles / ships and achieve energy conservation and emission reduction.

The invention discloses an energy storage battery temperature control system which comprises an energy storage EMS, an energy storage BMS, an energy storage PCS and a direct cooling unit, the energy storage BMS is used for collecting the temperature of a battery cell in real time, the energy storage PCS is used for collecting electrical parameters of the energy storage battery system in real time, the energy storage BMS and the energy storage PCS transmit the collected temperature data and electrical parameters to the energy storage EMS, and the direct cooling unit is connected with the energy storage EMS. And the energy storage EMS obtains the active power of the energy storage battery system according to the received electrical parameters, different temperature control strategies in different active power intervals are stored in the energy storage EMS, and the energy storage EMS controls the direct cooling unit to enter corresponding temperature control measures according to the received cell temperature data and the corresponding temperature control strategies. The direct cooling unit is jointly controlled through the energy storage EMS, the energy storage BMS and the energy storage PCS, multi-level judgment is adopted, accurate control over the battery temperature can be achieved, and it is guaranteed that the battery cell temperature is always within the optimal temperature range.

This invention discloses an audio enhancement system and method for underground broadcasting systems, relating to the field of audio enhancement technology. The system acquires noise signals and original audio signals from a mine roadway, processes them through standardization, encodes and transmits them, and then decodes them to obtain a standardized noise signal. The standardized noise signal undergoes frequency band amplitude shaping and time delay compensation, followed by a phase inversion operation to generate a reverse noise signal. Based on the original audio signal and a roadway sound reflection model, the reverberation component within the roadway is predicted. After phase inversion, a reverse reverberation signal is generated, and a reverberation gating coefficient is introduced for weighted control to obtain the actual reverse reverberation signal. The original audio signal, the reverse noise signal, and the actual reverse reverberation signal are then superimposed to obtain the final audio signal. Utilizing the principle of destructive interference, the system effectively reduces the impact of environmental noise and reverberation.

The utility model provides a sound-absorbing crystal wood board convenient to install, which comprises a plurality of composite sound-absorbing boards, the whole composite sound-absorbing boards are arranged in a rectangular shape, two ends of each surface of each composite sound-absorbing board are respectively provided with an installing groove, and a connecting mechanism is clamped in each installing groove. During use, after the edges of the two composite acoustic panels are aligned, the I-shaped connecting blocks can be embedded into the inverted-T-shaped mounting grooves, the limiting springs are compressed under the extrusion of the inner walls of the mounting grooves by utilizing the guide of the inclined planes of the right-angled trapezoidal clamping blocks, and when the connecting blocks are inserted into the clamping grooves, the clamping blocks reach the clamping grooves, the clamping blocks can be clamped into the clamping grooves; each surface of the composite acoustic panel is provided with a mounting groove and a connecting mechanism, multi-direction extension splicing is supported, the mounting flexibility is improved, during dismounting, the push block with the anti-skid groove is pushed to drive the clamping block to be separated from the clamping groove, the connecting block can be taken out, quick dismounting is realized, and the use convenience is remarkably improved.

The utility model belongs to the technical field of audio equipment, and particularly relates to a microphone wind screen for a voice acquisition device, which comprises a fixed part, a movable part is arranged on the side surface of the fixed part, and the outside of the fixed part is fixedly connected with an inclined strut assembly; the inclined strut assembly comprises an inclined plate, one end of the inclined plate is connected with the fixing piece, the other end of the inclined plate is fixedly connected with a transverse plate, the transverse plate is rotationally connected with a mounting plate, the side face of the mounting plate is connected with a wind shielding piece in an inserted connection mode, the wind shielding piece is arranged to be in a horn shape, and the open end of the wind shielding piece is sleeved with a protective net. By the adoption of the design that the movable piece and the fixed piece are combined with the inclined strut assembly, high universality and flexibility are provided; the structure not only allows the windproof screen to be rapidly installed on microphone supports of different models and sizes, but also can adapt to various recording environments by adjusting the included angle between the installation plate and the inclined strut assembly.

The present invention relates to the technical field of light alloy manufacturing, and in particular to a processing mold and processing method for a thin-walled part with an annular groove on the end face; the processing mold comprises: a milling processing mold for processing the inner wall of the side of the thin-walled part and a lathe processing mold for processing the thin-walled end face with an annular groove; the milling processing mold is provided with a protective plate surrounding the side surface in a circumferential direction on the side of the thin-walled part; the lathe processing mold is provided with an external support structure for pressing the outside of the central annular end face of the thin-walled part and an internal support structure for supporting the inside of the central annular end face of the thin-walled part, and the external support structure and the internal support structure are used to keep the thin-walled part stable when processing the annular groove. The processing mold solves the deformation and vibration of the second end face during lathe processing and the side vibration during milling processing, and realizes high-precision and stable processing of the side wall and end face of magnesium alloy thin-walled parts.

A wearable two-way communication audio device includes: a first microphone providing a first microphone signal; a second microphone that provides a second microphone signal; and one or more processors. The one or more processors are configured to estimate an ambient noise level using the second microphone signal and adjust the equalization filter based on the estimated ambient noise level. The first microphone signal and the second microphone signal may be processed via a first beamformer to provide a first beamformed signal, and the first beamformed signal may be filtered with an equalization filter to provide a noise estimation signal. The one or more processors may also use the noise estimation signal to generate a voice output signal for transmission to a remote recipient.

The invention discloses an audio processing method and a charging box, the audio processing method is applied to the charging box, the charging box is in Bluetooth connection with a Bluetooth earphone and a terminal device, and the audio processing method comprises the following steps: acquiring voice data transmitted by the Bluetooth earphone; acquiring environment sound data picked up by a microphone on the charging box; performing noise reduction processing based on the voice data and the environment sound data to obtain noise-reduced audio information; and transmitting the noise reduction audio information to the terminal equipment. The voice data transmitted by the Bluetooth headset and the environmental sound data picked up by the charging box are acquired, and noise reduction processing is performed based on the voice data and the environmental sound data, so that the problem of unclear human voice caused by noise in Bluetooth communication is solved.

The invention discloses an intelligent adjusting air curtain dust control device. The intelligent adjusting air curtain dust control device comprises a dust control mechanism and a control end electrically connected with the dust control mechanism, and the control end is used for controlling the dust control mechanism; the dust control mechanism comprises a shell, an air inlet pipe is installed at one end of the shell, and the air inlet pipe is connected with an air duct. According to the intelligent adjusting air curtain dust control device provided by the invention, the dust control mechanism and the control end are arranged, and the dust control mechanism comprising the shell, the air inlet pipe, the air outlet pipe, the input assembly, the air curtain generator and the air control pipe is arranged, so that an air curtain wall can be generated in a roadway, dust is prevented from advancing, and dust falling is facilitated; the dust concentration sensor is used for detecting the dust concentration, and the air outlet amount of the device and the strength of the air curtain wall can be intelligently controlled according to the real-time change of the dust concentration in the roadway, so that dust can be more efficiently intercepted, dust diffusion is controlled, and the dust control efficiency is improved.

The utility model discloses an explanation emitter and a wireless explanation device. The explanation emitter comprises a housing, a control mainboard, a moving-coil microphone, a microphone protection net, a transceiver, a transmit-receive antenna and a battery. The shell is provided with a head part and a tail part which are away from each other; an accommodating cavity is formed in the shell; at least part of the surface of the shell forms a handle part; the control mainboard is arranged in the accommodating cavity; the moving-coil microphone is arranged at the head part of the shell and is electrically connected with the control mainboard; the microphone protective net cover is arranged at the periphery of the moving-coil microphone and is connected with the shell; the transceiver is arranged in the accommodating cavity and is electrically connected with the control mainboard; the transmitting-receiving antenna is arranged in the accommodating cavity and is far away from the area where the handle part is located, and the transmitting-receiving antenna is further electrically connected with the control mainboard; the battery is arranged in the accommodating cavity and is electrically connected with the control mainboard; by adopting the moving-coil microphone, the sound of an explainer can be picked up at a short distance, a large amount of picked environmental noise is reduced, and the voice definition and intelligibility are improved.

The invention relates to a vehicle control method and device, a vehicle and a storage medium. The environment data of the environment where the vehicle is located can be obtained; if it is determined that a target object exists in a first preset area corresponding to the vehicle according to the environment data, the motion state of the target object is determined according to the environment data; and according to the motion state, the vehicle is controlled to conduct starting warning according to a preset warning strategy.