132results about How to "Cancel noise" patented technology

The utility model discloses a direct-drive electro-magnetic annular synchronous motor, and belongs to the technical field of large-scale synchronous motors. The motor comprises a split stator which is formed by splicing and fixing a plurality of stator petals along the circumferential direction; the block magnetic poles form a motor rotor, a plurality of independently-formed magnetic pole units are arranged at intervals in the circumferential direction, and each magnetic pole unit is directly and fixedly installed on the outer wall of the load rotating cylinder; the supporting and sealing structure is arranged at the axial end part between the split stator and the block magnetic pole and is used for sealing a gap between the split stator and the block magnetic pole; and the collector ring and brush carrier system is arranged at one axial end of the motor, and the output end of the collector ring and brush carrier system is electrically connected with the excitation windings of the block magnetic poles. According to the utility model, the split stator and the block magnetic pole structure are adopted, so that the transportation and field installation of the ultra-large motor are facilitated; the rotor is directly mounted on the outer wall of the milling cylinder to realize direct drive, a gear transmission link is omitted, the transmission efficiency is high, and operation is stable; a multi-layer sealing structure adapts to a high-dust environment, and the reliability is high; the speed regulation performance is good and the maintenance is convenient.

The application relates to a lithium battery anchor machine, which comprises a rack, a lithium battery, a motor, a gear transmission mechanism and a power output shaft which are installed on the rack; the motor is connected with a motor output shaft, the motor output shaft and the power output shaft are connected with the gear transmission mechanism respectively, the gear transmission mechanism comprises a planetary gear transmission assembly; the gear transmission mechanism is installed in a transmission shell, the power output shaft is stretched out from the transmission shell and detachably connected with a drill bit. The utility model can solve the problems of power source, working efficiency and maintenance cost, and improve the efficiency, safety and reliability of railway track bolt drilling operation.

The steering axle frame of the low-speed unmanned logistics vehicle comprises a front beam pipe, a steering frame, a connecting sleeve and the like, the connecting pipe is provided with a connecting section and a limiting section, the connecting section is inserted into the front beam pipe, and the limiting section abuts against the end of the front beam pipe; one end of the connecting joint is arranged on the connecting sleeve, and the other end is movably inserted into a steering groove of the bogie; the connecting rotating shaft is arranged on the connecting joint and is rotationally connected with the bogie; the positioning lock pin is arranged on the connecting joint and is inserted into the locking groove of the connecting rotating shaft so as to lock the connecting rotating shaft and the connecting joint; and the gasket is arranged between the connecting joint and the bogie so as to lock the axial position of the connecting joint. According to the steering axle frame, the connecting strength between the connecting joint and the front beam pipe is improved by additionally arranging the connecting sleeve, so that the connecting joint and the front beam pipe are not prone to breakage; axial positioning of the connecting rotating shaft is achieved through the positioning lock pin and the gasket, axial movement is avoided, and noise generated by axial movement is eliminated.

This utility model discloses a one-way braking assembly, including a rotating component and a floating seat. The rotating component and the floating seat are in frictional engagement, and a braking component is provided on the floating seat, which acts on the floating seat. When the rotating component rotates, the floating seat tends to rotate in the same direction due to frictional engagement, and the braking component releases or locks the floating seat according to its tendency direction. The rotating component and the floating seat squeeze each other, and the pressure changes with the external load. When locked, the frictional force of the floating seat on the rotating component changes adaptively with the load, ensuring effective braking under heavy loads. Moreover, the motor drive loss decreases as the load decreases, saving energy, extending lifespan, and eliminating braking noise during descent. The structural design adapts to the needs of load changes.

This invention provides a method and system for semantic novelty search of scientific and technological literature based on a large-scale pre-trained model, belonging to the field of information retrieval technology. The method includes: acquiring the target user's query input text and retrieval constraints; performing preprocessing and standardization to obtain preprocessed query input text; performing multi-granularity semantic encoding fusion to determine the semantic vector of the preprocessed query input text; performing domain-adaptive fine-tuning to obtain an optimized BERT model; constructing a feature classifier to generate feature semantic representations to obtain feature semantic representation results; performing comprehensive novelty assessment to obtain a comprehensive novelty rating; and performing automated difference analysis to obtain difference analysis results. This invention solves the technical problem in existing retrieval schemes based on pre-trained models that use single-granularity semantic representations, which cannot fully capture the complex semantic structure of professional terms, resulting in inaccurate novelty search results.

The application provides a target positioning photoelectric detection system and method based on multi-band fusion, relates to the technical field of optical detection, and obtains a first input data set of a photoelectric detection target based on a terahertz quantum pulse source; a dynamic bias current is applied to the photoelectric detection target to obtain a second input data set; then the first input data set and the second input data set are fused in features to obtain a multi-modal feature matrix; the multi-modal feature matrix is fused in features for monitoring to obtain a detection discrimination matrix and a fusion feature vector, the micro-evolution trend of defects of the photoelectric detection target is determined based on the fusion feature vector and the detection discrimination matrix; the weight parameters of a multi-band deep fusion network are updated in negative feedback according to the micro-evolution trend, and then the defect result of the photoelectric detection target is output based on the updated multi-band deep fusion network, so that the application can realize micro-positioning and evolution prediction of defects based on multi-modal fusion detection, and the precision of photoelectric detection is improved.

The utility model discloses a split type annular blanking device which comprises an annular rotating disc and is characterized in that the annular rotating disc comprises a bottom plate assembly, a linear guide rail set, an arc guide rail set, an inner guide block and an outer guide block, the linear guide rail set, the arc guide rail set, the inner guide block and the outer guide block are detachably connected to the bottom plate assembly and matched with one another to form an annular guide groove, and the arc guide rail set is spliced to one end of the linear guide rail set. The inner guide block and the outer guide block are mutually matched and spliced at the other end of the linear guide rail group, an arc-shaped guide groove is formed between the corresponding inner guide block and the corresponding outer guide block, the inner guide block and the outer guide block are respectively provided with a position adjusting mechanism, and the corresponding inner guide block and the corresponding outer guide block can be close to or far away from the linear guide rail group so as to eliminate a gap between the measuring cups. The split type modular design is adopted in the structure, rapid replacement and local maintenance are achieved, and cleaning is convenient.

The application relates to the technical field of kitchen equipment, in particular to a noise reduction type range hood. The range hood comprises a hood and a grille assembly; a smoke collecting cavity is formed in the hood; the smoke collecting cavity is provided with an air inlet; the air inlet is provided with a grille mounting structure; the grille assembly comprises at least one inlet grille; the at least one inlet grille is detachably connected with the grille mounting structure; air inlet holes are arranged on the inlet grille at intervals; flow guide pieces are arranged in the air inlet holes; the flow guide pieces are provided with flow guide flange portions; the flow guide flange portions extend to the inside of the smoke collecting cavity along the edges of the air inlet holes; sound absorption pad mounting structures are arranged between adjacent flow guide flange portions; and sound absorption pads are arranged in the sound absorption pad mounting structures. The structure of the inlet grille is designed, the noise at the air inlet of the range hood is greatly reduced, and the air inlet resistance and the oil fume suction effect are not affected.

A filter circuit and an adjustable inductor thereof, which relates to a filter circuit, includes a power supply end, an output end, a power supply line and an adjustable inductor. The power supply end is used to receive an operating power supply. The output end is used to output the operating power supply. The power supply line is coupled between the power supply end and the output end. The adjustable inductor is electrically connected between the power supply end and a ground end and used to eliminate noise on the power supply line. The adjustable inductor includes a first transducer and a second transducer. The first transducer and the second transducer have opposite transconductance phases, and the second transducer is electrically connected between two ends of the first transducer.

A key includes a base plate, a keycap, a connecting assembly, and multiple protruding structures. The connecting assembly includes a first connector and a second connector located between the base plate and the keycap. Multiple protruding structures are disposed on the upper surfaces of the first connector and the second connector. When the keycap is pressed to the down position, the multiple protruding structures on the first and second connectors press against the bottom surface of the keycap. The multiple protruding structures push open from the keycap, creating a gap between the keycap and the connecting assembly. This prevents the bottom surface of the keycap from contacting the upper surfaces of the first and second connectors, avoiding impact noise from surface-to-surface contact and thus eliminating noise.

This invention relates to the field of asynchronous motors for electric forklifts, and discloses an asynchronous motor for electric forklifts with noise reduction function. The motor includes an electric forklift and an electric forklift drive structure mounted on the bottom of the electric forklift. The electric forklift drive structure is used to propel the electric forklift. The electric forklift drive structure includes an asynchronous motor and a forklift drive connector fixed to the outside of the asynchronous motor. The asynchronous motor and the forklift drive connector are connected and fixed to the electric forklift through a drive structure fixing component and a drive structure connector. A drive component is fixedly connected to the output end of the asynchronous motor, and a drive component kit is fitted onto the outside of the drive component. The drive component kit is fixed to the end of the asynchronous motor and is used to adjust the radial angle of the drive component. Compared with the prior art, this application has advantages such as compensating for meshing misalignment during the asynchronous motor transmission process, and solves a series of problems such as noise caused by meshing misalignment.

The application provides a mute buffer lock body, which comprises a lock body outer lining plate, a lock body box bottom assembly, a tongue peach mechanism, a latch assembly, a lock body box cover, the lock body box bottom assembly comprises a box bottom and a lock body inner lining plate; further comprising: a latch damper, a latch silencer block is embedded on the lock body inner lining plate, the latch assembly comprises a latch assembly mute buffer mechanism, the latch peach mechanism comprises a latch peach silencer assembly, noise generated by the latch assembly during use is eliminated through the latch assembly mute buffer mechanism, the latch damper, the latch silencer block and the latch peach silencer assembly. By using the application, the problem that noise is generated by the impact or friction between components of the lock body when the door is closed or opened can be solved.

The present application provides an operating sound eliminating device for a semi-active engine mount of a vehicle, in the configuration of an electromagnetic valve for opening and closing an air chamber of the semi-active engine mount, a plurality of layers are adopted for an upper stopper, so that not only the air tightness and durability of the upper stopper can be improved, but also the impact when the upper stopper hits a valve housing can be absorbed while reducing noise.

The utility model relates to the technical field of distribution box installation, and particularly discloses a slotting-free distribution box installation structure which comprises a wall body, an embedded box is embedded in the wall body, and protruding strips are evenly arranged on the outer surfaces of the two ends of the embedded box. According to the grooving-free power distribution box mounting structure, after the end cover is inserted into the embedded box, the elastic clamping pieces and the grooves are clamped with each other, and the combination of the embedded pipeline and the embedded box enables the interior of the embedded box to form a sealed space, so that cement mortar does not enter the interior of the embedded box when the embedded box is placed into a wall for pre-embedding, and the embedded pipeline is prevented from entering the embedded box. Meanwhile, due to the design of the protruding strips, the embedded box can be firmer after cement mortar is solidified, the distribution box can be installed on the wall without grooving through pre-embedding and using of the embedded box, noise and dust generated by grooving can be avoided, the situation that the strength of the wall is reduced due to grooving is avoided, and the service life of the distribution box is prolonged. And the embedded box can be pre-embedded without damaging the wall body.

The utility model discloses a silent oil source hydraulic system which comprises a hydraulic tank, a hydraulic oil pump, a hydraulic oil pump, a hydraulic oil pump, a hydraulic oil pump and a hydraulic oil pump, and an accommodating space is formed in the hydraulic tank and used for accommodating hydraulic oil; the hydraulic pump is fixedly mounted at the top of the hydraulic tank, and the hydraulic pump is used for extracting the hydraulic oil in the accommodating space; the damping mechanism is arranged at the joint of the hydraulic pump and the hydraulic box; the silencing cover is used for covering the hydraulic pump, and a silencing material is arranged on the inner surface of the silencing cover; the oil pressure pipeline is connected with the hydraulic pump, and the oil pressure pipeline is used for conveying the hydraulic oil to an execution component; the buffering structure is connected with the oil pressure pipeline and used for eliminating oil pressure fluctuation of the oil pressure pipeline, and the noise generated in the working process of the hydraulic system can be reduced.

The present application relates to the technical field of stress monitoring, in particular to a hanging basket safety state monitoring method, device and equipment for bridge construction. The actual detection data and the static data are compared in the construction state to obtain the relative fluctuation characteristics. The load transfer tendency characteristics are obtained based on the relative fluctuation characteristics of the sensor group and the sensor distance, the compression characteristic transfer path is determined according to the combination relationship of the sensor group, the identification value is generated by judging whether the long-distance compensation transfer of the connected state of the path occurs, and the identification value is stored in the historical identification value sequence. If the sensor data is detected to be out of limit at a real-time time, the nearest identification value in the historical identification value sequence is taken as a reference, and an out-of-limit state feedback warning signal is combined to generate an alarm signal. The present application can effectively distinguish the normal load impact and the abnormal state of the structure in the construction process, and improve the accuracy and reliability of the hanging basket safety monitoring.

The application discloses a kind of health state evaluation methods of electrochemical energy storage system, it is related to energy storage system technical field, and its technical solution key points include the following steps: acquisition energy storage battery when running multi-source time series data and pre-processing;The multi-source time series data after pre-processing is divided into multiple continuous time segments, the preliminary health state evaluation result is input into battery state model to obtain state simulation value, and the state simulation value is compared with the actual measurement value of corresponding time segment to obtain evaluation error;When evaluation error does not satisfy preset condition, parameter optimization is carried out to light-weight agent model based on evaluation error;When evaluation error satisfies preset condition, preliminary health state evaluation result is used as final health state evaluation result and is output, effect is to the adaptive evaluation of energy storage battery health state.

The utility model relates to a novel sound insulation curtain wall. The sound insulation board comprises a sound insulation board body and a fixing support, the sound insulation board body is composed of a first partition board, a second partition board, a sound absorption layer, a back board and an outer frame, the first partition board is provided with a plurality of first sound absorption strip-shaped holes and a first sound absorption board, and the second partition board is provided with a plurality of second sound absorption strip-shaped holes and a second sound absorption board. A reflection area and a sound insulation area are formed between any first sound absorption plate and the adjacent second sound absorption plate; the fixing support is composed of a stand column, two [-shaped rod pieces fixed to the stand column and a bottom baffle, the two [-shaped rod pieces are fixed back to back, each [-shaped rod piece is provided with a back plate, two side plates and a clamping groove, the back plate is provided with a plurality of elastic pieces extending in the inclined direction, an outer frame on the sound insulation plate is clamped in the clamping groove, and the sound insulation plate is fixed to the bottom baffle. And the spring is abutted against the elastic sheet. The reflection area, the sound insulation area, the sound absorption layer and other modes are adopted for silencing and reducing noise, and therefore the effect is obvious.

The invention discloses a concrete surface crack image segmentation method and system, and belongs to the technical field of hydraulic engineering detection. According to the method and the system, the noise of a visible light image is eliminated, the temperature information of an infrared image is utilized, pixel fusion is carried out by adopting a weight coefficient, and the fusion weight is dynamically adjusted according to environment illumination, thermal imaging intensity and the like, so that the method and the system adapt to different concrete structure materials, shooting conditions and defect forms, and cracks are better distinguished; and realizing automatic identification and segmentation of the concrete surface crack based on the optimal segmentation model obtained through image training after fusion, reducing the influence of subjective factors, and effectively improving the precision and efficiency of concrete surface crack detection.

The invention provides a nondestructive disassembly lithium battery recycling method based on laser positioning and mechanical arm cooperation, which comprises the following steps: S1, collecting the shape and coordinate data of a battery pack on a conveying line in real time, generating a scanning coverage parameter, performing judgment in combination with a conveying speed, and if the conveying speed exceeds a speed threshold value, eliminating noise of the coordinate data and generating accurate position data; s2, space matching is conducted on the shape of the battery pack based on the accurate position data, a relative position model of a laser head and a mechanical arm base is established, the scanning coverage range is judged by combining a mechanical arm operation radius limiting value, and if the limiting value is smaller than a scanning coverage range parameter, dynamic adaptation is achieved through joint parameter adjustment, and an adapted operation radius value is output; s3, according to the adapted operation radius value, carrying out collaborative path planning aiming at the equipment coordination requirement, avoiding a collision risk, and obtaining an optimized collaborative path; and S4, continuously monitoring the positioning precision based on the optimized collaborative operation path and the real-time change of the conveying speed.

The present application belongs to the field of electric digital data processing, and relates to a kind of digital data processing system of corrugated production line operating state, comprising: data acquisition unit, feature storage unit, offset solving unit and parameter compensation unit, data acquisition unit obtains the heterogeneous time sequence data stream of controlled node;Feature storage unit carries out dimensional alignment in digital storage space to construct historical delay feature matrix;Offset solving unit calculates addressing address increment according to the correlation mapping relationship between reference feature and auxiliary feature;Parameter compensation unit carries out logical shift to read pointer according to addressing address increment, points to the historical state slice with correlation, and outputs the feedforward compensation control parameter for hedging response delay, the present application eliminates causal drift generated by flexible medium transmission through asynchronous addressing mechanism of digital storage space, realizes accurate matching of control parameter time sequence and mechanical response phase, and guarantees tension stability under high-speed operating state.

The application provides a power line identification method, system, device and storage medium, and belongs to the technical field of power system detection. The method comprises the following steps: acquiring a to-be-detected image containing a power line; constructing a phase filter stretching kernel function based on a phase shift kernel function and a convolution theorem; inputting the to-be-detected image into the phase filter stretching kernel function, using the phase filter stretching kernel function to perform stretching transformation on the to-be-detected image, converting the to-be-detected image in the frequency domain into an angle image in the spatial domain, and extracting a contour edge in the angle image; superimposing the to-be-detected image and the angle image containing the contour edge to obtain a superimposed image, using relative total variation (RTV) to perform sharpening enhancement processing on the superimposed image, and identifying the power line. The application can improve the identification accuracy of the power line.

The application relates to a reverse deformation tool and a reverse deformation method for welding a new energy battery pack beam, which comprises a bottom plate, a backrest for positioning one end of the beam in the length direction, a positioning module for positioning a reinforcing block, a fixed pressing module for fixing two ends of the beam in the length direction, a reverse deformation adjustment module for reverse deformation adjustment of a welding position of the beam and the reinforcing block, and an auxiliary adjustment module for reverse deformation adjustment of the middle part of the beam in the length direction. The application solves the correction work after the previous welding deformation, saves a large amount of labor, eliminates the labor cost of the shaping process, reduces the situation that the workpiece is scratched after deformation and correction, avoids customer complaints, removes the correction process, eliminates the noise of workshop correction, solves the industrial production problem, can realize in-line assembly line production, and solves the situation that the frame assembly quality is unqualified due to the deformation of the bent, twisted and processed internal stress of the profile itself.

The utility model provides a bidirectional frequency resonance block which comprises a vehicle body connecting framework and a mass block, the mass block is of a cuboid structure, and an equipment cavity allowing the vehicle body connecting framework to penetrate through is formed in the mass block. A mass block connecting framework is arranged on the inner wall of the equipment cavity, the mass block connecting framework is connected with the vehicle body connecting framework through a rubber part, the rubber part comprises an inner ring, an outer ring and two groups of connecting parts connected between the inner ring and the outer ring, and the connecting parts are symmetrically arranged between the inner ring and the outer ring. Through the design that the hollow and solid structure is constructed in the rubber piece through the connecting part and the cuboid structure design of the mass block, the rigidity in the Z direction and the rigidity in the Y direction are different, the frequency bands of the resonance frequency during vibration in the Z direction and the frequency bands of the resonance frequency during vibration in the Y direction are different, and therefore when the whole vehicle vibrates, the frequency resonance pads in the Z direction and the frequency resonance pads in the Y direction are matched, and the vibration resistance is improved. And the use amount of resonance blocks on the subsystem of the chassis single system is reduced.

An event camera image reconstruction method based on an optical flow-guided multi-frame fusion network belongs to the field of computer vision and image processing technology. Step 1: Acquire event data and convert it into continuous, smooth spatiotemporal voxels using a Gaussian distribution-based full-time-interval voxel encoding scheme. Step 2: Construct an optical flow-guided FMF-Net network. Step 3: Design a comprehensive loss function for training the FMF-Net network. Step 4: Supervised training of the FMF-Net network using a publicly available event dataset. Step 5: Utilize the trained FMF-Net network, input spatiotemporal voxels, and output a high-fidelity reconstructed image. This invention fully utilizes long-term motion cues and temporal dynamic features to achieve high-fidelity image reconstruction under high-speed motion and sparse event input, solving the problems of detail loss and poor consistency in reconstruction under dynamic scenes in existing methods, and significantly improving the structural similarity and visual quality of the reconstructed image.

A deep learning-based battery health and remaining life prediction system includes: a database storing a first set of data including multiple battery data collected from an input unit; a processor preprocessing the first set of data based on a first artificial intelligence model, learning a second artificial intelligence model by inputting the preprocessed first set of data, and predicting battery state health and remaining battery life based on the learned second artificial intelligence model. The processor includes: a preprocessing unit that performs preprocessing by converting the first set of data into a spectrogram and removing noise based on the first artificial intelligence model; a learning unit that extracts features from the input preprocessed first set of data and learns the second artificial intelligence model to estimate battery state health based on the extracted features; and a prediction unit that estimates battery state health from a second set of data input by a user based on the second artificial intelligence model learned by the learning unit, and predicts the remaining battery life.

The invention belongs to the technical field of wind turbine generator fault early warning, and discloses a wind turbine generator gearbox fault early warning system and method based on an acoustic phased array. The fault early warning system comprises an acoustic phased array sensor array, a signal acquisition and transmission module, a signal processing and analysis module, a fault diagnosis and early warning module and a data storage and management module. According to the method, the acoustic phased array sensor array is deployed to collect the acoustic wave signals generated in the operation process of the wind turbine generator gearbox, and the non-contact detection mode does not need any physical contact or transformation on the gearbox, so that the potential damage to the gearbox structure and the interference to the operation state are avoided. The acoustic sensor is a piezoelectric or capacitive sensor which is high in sensitivity, wide in frequency band and low in noise, accuracy and reliability of signal collection are guaranteed, and meanwhile normal operation of the gear box cannot be affected at all.

This invention relates to the field of spectral analysis and identification of genuine and counterfeit Chinese medicinal materials, and discloses a method for identifying counterfeit Cordyceps sinensis based on multispectral fusion. This method first collects multispectral image data of samples under standard conditions; eliminates equipment and environmental noise through standardized preprocessing to establish a reliable data foundation; then, it fuses extracted spectral derivative features and spatial texture features to construct a lightweight neural network identification model. Its core innovation lies in introducing a physical interference stripping model, which can actively correct spectral distortion caused by moisture and mold, obtaining intrinsic spectra to improve model robustness; and through dynamic verification and incremental learning mechanisms, the model can continuously evolve, effectively identifying new counterfeiting methods. Finally, the entire model is integrated into a multispectral portable terminal, achieving rapid screening within seconds and outputting a complete report including authenticity determination, type inference, and confidence level. Ultimately, this solves the industry problems of low efficiency, reliance on experience, and inability to be applied on-site by traditional methods.

The invention discloses an energy-saving optimization control method and system of an air compression station building, a medium and a product, and belongs to the field of air compression station building energy-saving control, and the method comprises the steps: collecting multi-source operation data of the air compression station building in a current sampling period; based on the multi-source operation data, the real gas consumption of the user in the current sampling period is calculated through the mass conservation relation among the gas supply amount, the gas storage variable amount and the gas consumption; inputting the real gas consumption of the user into a preset gas consumption prediction model, outputting gas consumption prediction data in future preset time, and solving to obtain gas supply distribution of each air compressor based on the gas consumption prediction data and a preset power-gas supply relation model of each air compressor; and on the basis of all the air supply distributions, an operation instruction is generated, all the air compressors are controlled to operate, and energy-saving optimization control is completed. By implementing the method, the problem that in the prior art, due to the fact that the outlet flow of the air compressor is directly adopted as the user gas consumption, gas consumption requirement recognition is not accurate can be solved.

The application provides a human action recognition and quality evaluation method and system based on multi-modal data fusion, the application collects RGB visual data, 3D skeleton data, inertial IMU data and electromyography sEMG data of human action, and carries out corresponding pretreatment; through branch parallel feature extraction, RGB visual feature vectors, 3D skeleton feature vectors, IMU inertial feature vectors and sEMG electromyography feature vectors are obtained respectively; based on the modal reliability values of each branch, multi-modal fusion feature vectors are obtained by dynamically distributing and fusing the weights of the cross-modal attention mechanism to the multi-path features; the action recognition result is obtained by using a lightweight action recognition network; and the action recognition result is quality evaluated through the comprehensive action quality score. The application can not only accurately recognize the action category, but also quantize the action quality from three dimensions of form, dynamics and force, thereby improving the robustness and accuracy of action recognition in a complex scene.