62results about How to "Solve the noise" patented technology

The utility model relates to the technical field of air energy heat pumps, and discloses integral air energy heat pump equipment which comprises an equipment frame, a partition plate is in threaded connection with the inner wall of the equipment frame, a protection mechanism is arranged on the top of the partition plate, a buffering mechanism is arranged on the bottom side of the interior of the equipment frame, and the protection mechanism comprises two protection frames. The bottoms of the two protection frames are fixedly connected to the top of the partition plate, the close sides of the protection frames are fixedly connected with connecting plates, the two sides of the interior of each protection frame are fixedly connected with ventilation grids, and the two sides of the exterior of the equipment frame are both in threaded connection with baffles. According to the protection mechanism, the protection frame is connected with the connecting plate, and then the protection frame drives the ventilation fence to be fixed, so that through cooperation of all structures of the protection mechanism, internal electric control components are convenient to maintain, the protection capacity of equipment to the internal components is improved, and the overall stability of the structure is enhanced.

The utility model discloses a shock absorption and noise reduction composite structure device for an elevator car, which belongs to the technical field of mechanical engineering and acoustic engineering, and comprises a car body, the inner side of the car body is movably connected with a shock absorption mechanism, and the outer side of the shock absorption mechanism is movably connected with a noise reduction component. The shock absorption plates which are supported by the array telescopic supporting columns and are rotationally connected with the inner walls of the shock absorption plates are arranged on the four sides of the interior of the lift car body, and multiple sets of array shearing distribution telescopic rods are rotationally connected with the inner walls of the shock absorption plates. The stress damping plate moves to enable the array telescopic supporting columns to contract and store energy, the telescopic rods shear, expand and press downwards to drive the component force blocks to slide and press the compression springs to store energy, and impact force is unidirectionally decomposed into elastic potential energy and mechanical work. The problems that due to the fact that a traditional damping structure is arranged on the outer side of a lifting or connecting structure, vertical inertial impact, load sudden change, horizontal shaking and steel wire rope vibration conduction coverage are insufficient in the lift car body are solved, and effective buffering of the interior of the lift car body is achieved.

The invention relates to the technical field of intelligent evaluation of garment flatness, and particularly discloses an automatic evaluation method of a non-ironing suit seam flatness grade, and the method comprises the steps: obtaining image data and physical parameter data of a seam region in response to a detection trigger signal of the seam region of a non-ironing suit; and performing key scale screening based on texture contribution degree on the image data, calculating a relevance index between feature distribution and flatness grade probability distribution under different texture scales, and determining the texture scale of which the relevance index meets a preset contribution degree condition as a target key scale. According to the method, the entropy screening mechanism based on the texture contribution degree is introduced, so that the key scale which is most effective for flatness representation can be locked from the multi-source data in a self-adaptive manner, and the refinement and pertinence of feature extraction are realized.

The utility model relates to the technical field of steam vapor-liquid separation devices, and provides a steam vapor-liquid separation device with a silencing function under a negative pressure condition, which comprises a tank body device, a silencing device, a spraying device, a negative pressure device and a drainage device, the silencing device is arranged on the tank body device, one part of the silencing device is located in the tank body device, the spraying device is arranged on the negative pressure device, one part of the spraying device is located in the negative pressure device, and the drainage device is located outside the tank body device and communicated with the tank body device. According to the steam-liquid separation device with the noise reduction function under the negative pressure condition, steam is conveyed into the tank body device through the noise reduction device, the steam in the tank body device is cooled through the spraying device, the steam in the tank body device is rapidly discharged through the negative pressure device, the steam in the tank body device is sealed through the water drainage device, and the steam in the tank body device is discharged through the water drainage device. Therefore, noise is reduced, and steam leakage is isolated.

The present application relates to a method for extracting an acetabular facies lunata model, in particular to a method for extracting an acetabular facies lunata model based on mixed surface fitting, which solves the technical problem of low precision and robustness of the existing method for extracting an acetabular facies lunata model. The present application realizes rough extraction of the acetabular facies lunata model through spherical surface fitting, and then realizes accurate extraction of the acetabular facies lunata model in combination with ellipsoidal surface fitting, which combines the stability of spherical surface fitting and the anatomical fidelity of ellipsoidal surface fitting. In particular, in the case of complex pathologies such as hip dysplasia, the present application can still maintain high extraction accuracy, and improve the accuracy and reliability of clinical diagnosis and surgical planning. Meanwhile, in the iteration process of ellipsoidal surface fitting, an adaptive fault tolerance threshold is introduced, which effectively solves the problems of sensitivity to noise and strong parameter dependence of traditional methods, and has better robustness in processing complex acetabular morphology.

This utility model discloses a novel electric gear pump device for electric shovel lubrication truck, relating to the technical field of oil filling trucks for mining equipment. It includes a power compartment, a grease compartment, and a hose reel compartment. The power compartment includes a diesel generator set, a grease lubricating oil tank, a black oil lubricating oil tank, an electric gear pump set, an ultrasonic level gauge, a hose reel, a color paperless recorder, an electrical control cabinet, and a fire extinguisher. A ground-based oil replenishment system is installed on the side of the grease compartment. Ultrasonic level gauges are installed on the three oil tanks within the grease compartment to monitor the oil level in real time. These level signals are transmitted to the color paperless recorder installed on the electrical control cabinet panel. When absorbing oil, if the oil level in the tank is lower than the minimum absorbing level, the paperless recorder will issue a low-level alarm, reminding the operator to stop refueling to prevent the oil pump from running dry and being damaged. When replenishing oil in the tank, the paperless recorder will issue a high-level alarm, prompting the operator to stop oil supply to avoid oil overflow.

The application relates to the field of building equipment engineering and discloses a heating and ventilating pipe with a damping and buffering structure, which comprises a pipe body, a mounting plate is arranged on the side wall of the pipe body, a buffering assembly is arranged on the side wall of the mounting plate, and a fixed connection is arranged on the side wall of the pipe body; the buffering assembly comprises a damper, a damping pad is fixedly connected to the side wall of the mounting plate, a fixed frame is arranged on the side wall of the pipe body, a rubber pad I is fixedly connected to the side wall of the fixed frame, the side wall of the rubber pad I is in close contact with the side wall of the pipe body, and the damper is fixedly installed between the damping pad and the fixed frame. In the utility model, after vibration of the pipe body is transmitted to the buffering assembly through the fixed frame, the damping pad, the damper, the first spring and the like are synergistically acted, buffering is realized by absorbing and consuming vibration energy and adapting to angle change, the noise and structure fatigue problems caused by vibration transmission are solved, and the damping effect and stability of the pipe system are improved.

The present application belongs to the field of analog integrated circuit, and particularly relates to an RC oscillator without starting circuit. The present application uses Schmitt trigger as the comparator in the RC oscillator, and uses the hysteresis effect and positive feedback characteristics of the Schmitt trigger to reduce the influence of kickback noise. Meanwhile, a reset port is added to the Schmitt trigger, so that the working state of the input end of the RS flip-flop is simultaneously low when the circuit starts; and the two output signals of the RS flip-flop are respectively applied to the reset ends of the two Schmitt triggers through the delay control module, so that the reset signal of the Schmitt trigger cannot control the output result in advance before the input signal changes, and the timing error is avoided. The present application effectively solves the problems of the existing RC oscillator, such as the need of starting circuit and high noise.

The application discloses a method for measuring a detection tilt angle of a two-component atomic shearing interferometer, constructs a tilt angle set of a swing angle device; the angle of a mirror is turned between the time when atoms are subjected to the action of a pi Raman laser and a second pi / 2 Raman laser; a plurality of groups of odd number and even number are alternately detected; all tilt angles in the tilt angle set are traversed; and the actual included angle of the longitudinal direction of a CCD camera imaging surface relative to the Z-axis direction is calculated by fitting. The application also discloses a measuring device for the detection tilt angle of the two-component atomic shearing interferometer. The application enables the current atomic shearing interferometer to accurately measure the tilt angle of the detection system, thereby solving the problems of noise and system error caused by the non-zero return of the tilt angle of the detection system of the atomic shearing interferometer, and suppressing the drift of the differential measurement of the two-component atomic interferometer caused by the change of the tilt angle.

The invention discloses a three-point method ground resistance intelligent test method and system based on an electrical explosion-proof environment, and relates to the technical field of resistance intelligent test. The method comprises the following steps: acquiring electrical environment characteristic data of an electrical explosion-proof environment, adjusting a resistance intelligent test parameter according to the electrical environment characteristic data to obtain an adjusted resistance intelligent test parameter, and executing a grounding resistance intelligent test according to the adjusted resistance intelligent test parameter. The method comprises the following steps: monitoring measurement characteristic data of a grounding resistance intelligent test in a grounding resistance intelligent test process, analyzing to obtain measurement stability information of the grounding resistance intelligent test according to the measurement characteristic data of the grounding resistance intelligent test, and executing grounding resistance intelligent test condition verification optimization according to the measurement stability information of the grounding resistance intelligent test. Therefore, the accuracy and the reliability of the intelligent test of the grounding resistance are improved.

The utility model provides a curtain body moving device, the curtain body moving device is used for driving a curtain body to move, the curtain body moving device comprises a transmission belt and a tensioning mechanism, the transmission belt comprises a first belt body and a second belt body, and the first belt body and the second belt body are oppositely arranged in a spaced mode in the height direction of the curtain body moving device; the tensioning mechanism comprises a first tensioning piece and a second tensioning piece, the first tensioning piece abuts against the first belt body, and the second tensioning piece abuts against the second belt body. In the process that the curtain body moving device drives the curtain body to move, belt bodies on the two sides of the transmission belt are always kept in a tightened state, and the problems that due to the fact that the transmission belt is loosened, the curtain body moving device is prone to being blocked, and operation of the sunshade curtain assembly is abnormal are solved.

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 utility model relates to hidden rail adjusting screw automatic feeding technology field, more specifically, it relates to a screw automatic sequencing feeding device, including frame, storehouse, belt material spare, sweep material spare, push material spare, unloading slide, storehouse assembly is in the frame and is used to place screw, and the belt material spare is located in the storehouse and moves along the vertical of storehouse to and fro, the top wall of belt material spare is equipped with the clamping groove, the clamping groove is used to place the stem of screw, and the sweep material spare is located on the storehouse and moves along the transverse of storehouse to and fro, and the push material spare is set up in the longitudinal both sides of storehouse with unloading slide, and in the vertical of storehouse all are located between sweep material spare and belt material spare, when the belt material spare rises to the preset height, the sweep material spare transverse movement is used for sweeping back the screw of belt material spare on the reverse state to the storehouse, and the push material spare is used for pushing the screw of belt material spare on the front state and moves to unloading slide, the utility model discloses a screw automatic sequencing feeding device has the effect of reducing processing noise, reduces equipment cost.

This application discloses a fan control method, apparatus, system, and electronic device for a communication device. Relating to the field of communication technology, the method includes: obtaining a first control speed of a first-side fan and a second control speed of a second-side fan of the communication device, wherein the first side is the power supply side of the communication device and the second side is the system side of the communication device; or the first side is the system side of the communication device and the second side is the power supply side of the communication device; determining the speed difference between the first control speed and the second control speed; determining a compensation control speed of the second-side fan based on the speed difference; controlling the rotation of the first-side fan based on the first control speed; and controlling the rotation of the second-side fan based on the compensation control speed. This application solves the technical problem in communication device systems where the independent control of fans on different sides (such as the power supply side and the system side) leads to inconsistent speeds, which can easily cause uneven heat dissipation and noise problems.

The application provides a method and device for dividing a propagation mechanism area of a super large-scale MIMO system. The method provided by the application comprises: acquiring channel delay domain data corresponding to a dual polarization mode of a MIMO system in a dynamic indoor scene with a receiving end moving; constructing a dynamic time delay heat map with a transmitting end antenna serial number and a measurement time as two-dimensional dimensions based on the channel delay domain data, wherein the dynamic time delay heat map represents delay distribution differences in different polarization modes; performing noise smoothing and edge preserving processing on the dynamic time delay heat map, and then performing area segmentation, boundary positioning of different propagation mechanisms, edge detection and morphological optimization; extracting delay distribution features of the segmented areas for unsupervised quantitative clustering to obtain different time delay levels; and based on a combination mode of the time delay levels, combining the physical nature of the propagation mechanism, dividing an occluded line of sight into a transition state subclass to obtain a classified propagation mechanism.

The utility model relates to the technical field of rail transit vehicle equipment, in particular to a drainage device for a through channel, which mainly structurally comprises a liquid collecting container, at least one water inlet, at least one water outlet, at least one plug and at least one water outlet, the at least one plug closes the at least one water outlet in a pressure-tight manner, and the at least one buoyancy body is arranged in the collecting container and is connected with the at least one plug in a sliding and rotating manner, so that the at least one plug is moved from a position for closing the drainage pipe to a release position by utilizing buoyancy of the buoyancy body in the liquid; when enough liquid is collected in the collection container, the liquid can be automatically discharged, in addition, the plug always closes the drainage pipe, the water outlet is closed outwards, when the drainage device is installed on the frame of the hinged type vehicle through channel in use, and the cavity wall of the frame can serve as the side wall or the base of the collection container, the size of a single drainage device can be large enough, and the drainage device can be used for drainage of the hinged type vehicle through channel. And materials can be saved.

The utility model relates to the technical field of brown granulated sugar homogenizing, and discloses a brown granulated sugar homogenizing device which is characterized in that a shearing cavity is formed in the upper end of a box body, a processing cavity is formed in the bottom of the box body, a cam vibration screening structure linked with a homogenizing roller is arranged, and four corners of the bottom of a screening plate are connected with the processing cavity through vibration springs; when a servo motor drives a homogenizing roller to rotate, a second belt wheel drives a first belt wheel to rotate through a transmission belt, a cam rotates along with a driving rod and periodically jacks up a material screening plate, the material screening plate generates regular vibration under the elastic reset effect of a vibration spring, and a screening mechanism is synchronously driven through power of a homogenizing roller transmission chain. A vibration motor does not need to be additionally arranged, flexible vibration screening is achieved through cooperation of the cam and the vibration spring, the noise problem caused by rigid vibration is avoided, sugar particles are dispersed through vibration of the screening plate, screen holes are prevented from being blocked due to adhesion, and the screening efficiency is improved.

The utility model relates to the technical fields of core sample cutting machine discloses core sample cutting machine noise reduction energy -conserving green environmental protection structure, including the protective cover of cover setting in the outside of core sample cutting machine, and the protective cover has the protective cavity of accommodating core sample cutting machine in it, the protective cover has the protective wall, and the protective wall has the openwork area of inside and outside through arrangement, and the openwork area is covered with transparent window, the outside of protective wall has the outward side wall, and the inboard wall of protective wall has the inward side wall of arrangement towards protective cavity, and the inward side wall is covered with the sound insulation cotton layer, when the protective cover cover setting in the outside of core sample cutting machine, protective cavity is in sealed state, through the sound insulation cotton layer of protective cover, and make protective cavity be in sealed state, can significantly reduce the noise of core sample cutting machine work time generation, simultaneously, the sealed setting of protective cover can block dust and impurity to enter to guarantee the health of operator.

The utility model discloses a kind of milk adjuster without pump without residual water, it is related to milk adjuster equipment technical field, including kettle and water outlet base;Kettle is installed in the upside of water outlet base;Kettle bottom is equipped with heating module;The front of water outlet base is recessed to back, forms containing cavity, so that the side view of water outlet base is C-shaped opening shape;Water outlet base is respectively upper convex part and lower convex part in the upper and lower sides of containing cavity;The lower surface of upper convex part has partially exposed water outlet nozzle, water outlet nozzle is also extended into the inner cavity of upper convex part upwards;The inner cavity of upper convex part is also equipped with solenoid valve;Solenoid valve has water passage, water passage is vertically installed towards, its upper end is communicated with kettle, lower end is communicated with water outlet nozzle;Water outlet base is equipped with at least two switches, respectively with solenoid valve and heating module electric connection.Compared with prior art, avoid the noise problem caused by setting water pump, and residual water health problem caused by setting water pipe, and can keep stable water delivery performance.

The application provides a main structure of an air treatment device and the air treatment device. The main structure comprises a shell and an air supply device, the air supply device comprises an air duct shell, a front air duct is formed in the air duct shell, and the main structure further comprises a mounting main body arranged in the shell. The mounting main body comprises two splicing pieces, a device mounting position and a rear air duct are formed between the two splicing pieces, the air duct shell is arranged in the device mounting position, and the front air duct is connected with the rear air duct. The air treatment device comprises the main structure and an air treatment module. The main structure comprises at least one of the following: the air treatment module comprises a filter module, the filter module is arranged at an air inlet of the air treatment device and / or an air outlet of the air treatment device; and the air treatment module comprises a sterilization module, the sterilization module is arranged at the air inlet of the air treatment device and / or the air outlet of the air treatment device. The application realizes noise reduction, light weight and product miniaturization under the premise of ensuring the air supply effect of the air treatment device.

The utility model discloses an automobile air conditioner air pipe with a noise reduction structure. The automobile air conditioner air pipe comprises a flow guide shell, a noise reduction layer and a vibration reduction frame. Spiral flow guide ribs are arranged on the inner wall of the flow guide shell, the noise reduction layer is made of porous sound absorption materials and covers rib grooves, and the vibration reduction frame disperses vibration energy through elastic supporting strips. The flange plate and the sealing ring ensure airflow tightness, and the overhaul window is convenient to maintain. The thickness of the noise reduction layer is gradually changed, noise absorption and airflow smoothness are considered, and the vibration absorption effect is optimized through the elastic supporting strips. By means of the modular design, airflow noise and vibration transmission are effectively reduced, the mute performance of the air conditioning system is improved, and the air conditioning system is suitable for upgrading and reconstruction of various vehicle types and has high practicability and economical efficiency.

The invention relates to the technical field of hypersonic velocity flow field reconstruction and control, and discloses a multi-Mach number adaptive isolation section flow field online reconstruction device which comprises a test section, a spray pipe is arranged on the upstream of the test section, the air inlet end of the spray pipe is connected with a stable section, the front end of the stable section is connected with an air storage tank through a pneumatic control valve, and the air storage tank is connected with an air outlet of the test section. The downstream of the test section is connected with an exhaust pipeline; a dynamic pressure sensor is embedded in the inner wall face of the test section, and a back pressure sensor and a flap driven by a servo motor are installed at an outlet of the test section. Pressure data are processed through working condition sensing weighting and dynamic sliding window filtering, a parallel double-branch neural network is used for reconstructing a flow field image and recognizing a shock train topological form, and accordingly a high level or pulse width modulation signal is output to execute differential control on an electromagnetic valve. High-fidelity flow field reconstruction of sparse pressure data under multiple working conditions is realized, and the problem of signal lag is solved.

The invention relates to the technical field of ventilation systems, in particular to a noise reduction device of a rectangular air duct, which comprises an air duct main body, a micropore resonance sound absorption layer is arranged in the air duct main body, and the outer wall of the micropore resonance sound absorption layer is coated with a gradient density sound absorption glass wool layer; the connecting assembly is arranged in the air pipe body, and the gradient density sound absorption glass wool layer and the micropore resonance sound absorption layer are detachably fixed to the air pipe body through the connecting assembly; the gradient density sound absorption glass wool layer and the micropore resonance sound absorption layer are matched with the air pipe body in shape, and a cavity is formed between the gradient density sound absorption glass wool layer and the inner wall of the air pipe body. By arranging the composite structure of the micropore sound absorption plate and the gradient density glass wool, the problem that low-frequency noise and medium-high-frequency noise are difficult to consider in the prior art is solved, full-band efficient sound absorption is achieved, in addition, the overall structure of the device is compact, and the excellent broadband noise reduction effect is achieved on the premise that a small space in an air pipe is occupied.

This application discloses a motor drive control method, apparatus, device, storage medium, and product, relating to the field of motor control technology. The disclosed motor drive control method includes: acquiring current motor parameters of a target vehicle under current operating conditions, wherein the motor parameters include an electrical frequency; if the electromagnetic force fluctuation frequency generated by the current harmonic frequency corresponding to the electrical frequency is within the resonant frequency range of the target vehicle, determining a target synchronous modulation scheme corresponding to the electrical frequency from a preset set of synchronous modulation schemes; and controlling the drive circuit of the target vehicle based on the target synchronous modulation scheme. This application uses a flexible synchronous modulation scheme instead of an asynchronous modulation method to avoid increasing the switching frequency, thereby reducing the losses in the new energy vehicle motor drive system.

This invention relates to the fields of deep learning and medical imaging. More specifically, it relates to a method for fundus vessel segmentation based on multi-band wavelet decomposition and the Mamba architecture. In response to the acquisition of a fundus image, the fundus image is preprocessed to obtain an input image; the first feature map of the input image is decomposed into low-frequency approximation components and high-frequency detail components; the low-frequency approximation components are input into a low-frequency connectivity enhancement path, and a global topological scan is performed using a selective state-space model to extract long-distance connectivity features of the main vessels; the high-frequency detail components are input into a high-frequency detail refinement path, and a lightweight Mamba module is selectively activated through a sparse gating mechanism to scan and extract edge features of peripheral vessels; unlike existing technologies, this invention effectively solves the problems of existing technologies being unable to differentiate between main vessels and small vessels and struggling to maintain the connectivity of the vascular topology.

This application provides a method, apparatus, device, vehicle refrigerator, and vehicle for controlling a vehicle refrigerator compressor, relating to the field of vehicle technology. The method includes acquiring the resonant speed of the vehicle refrigerator compressor and a pre-constructed set of operating speeds; the pre-constructed set of operating speeds includes compressor speeds corresponding to different vibration and noise performance characteristics; selecting a target operating speed from the pre-constructed set of operating speeds that avoids the resonant speed, and controlling the compressor to operate at the target operating speed. This application alleviates the limitations of traditional methods that solely limit speed in pursuit of NVH (Noise, Vibration, and Harshness), achieving a dynamic balance between NVH performance and cooling efficiency in vehicle refrigerators, effectively resolving the contradiction between slow cooling and vibration noise, and significantly improving user experience and overall vehicle comfort.

The utility model discloses a shockproof noise reduction support for ventilation equipment, which belongs to the technical field of ventilation equipment installation, and comprises an air conditioner outdoor unit, the bottom of the air conditioner outdoor unit is fixedly connected with an I-shaped frame, two sides of the I-shaped frame are respectively and fixedly connected with an L-shaped plate I and an L-shaped plate II, a noise reduction bottom pad is arranged below the I-shaped frame, and the noise reduction bottom pad is arranged below the I-shaped frame. The inner side of the noise reduction bottom pad is in threaded connection with a fastening button; damping springs are distributed on one side of a strip-shaped plate at equal intervals, firstly, a noise reduction bottom pad is arranged at the position to be installed, secondly, an I-shaped frame is clamped in an I-shaped groove in the noise reduction bottom pad, and then fastening buttons are tightened in sequence, so that the I-shaped frame is connected with the noise reduction bottom pad; the first rubber sleeve piece and the second rubber sleeve piece buffer the two sides of the air conditioner outdoor unit, the vibration amplitude of the air conditioner outdoor unit can be reduced through the damping springs, finally, noise reduction is conducted on the air conditioner outdoor unit through the cooperation of the protruding head and the noise reduction bottom pad, and the problems of vibration amplitude and noise generated when the air conditioner outdoor unit operates are effectively solved.

This utility model provides a wheel frame structure, including a pair of wheel frame plates arranged parallel to each other front and rear. Multiple rollers are mounted on the wheel frame plates, with both ends of each roller fixed to the front and rear wheel frame plates respectively. An elastic abutment is provided between one or both ends of each roller and the wheel frame plate. This elastic abutment presses against the roller, reducing noise generated by roller collision and vibration. The elastic abutment also provides axial flexible support, allowing the roller to undergo slight elastic deformation upon impact, thereby absorbing vibration energy. Furthermore, the parallel arrangement of the front and rear wheel frame plates forms a stable frame structure, which, together with the elastic abutment, achieves three-dimensional vibration suppression, creatively solving the noise problem of wheel frame structures. This utility model also provides a peristaltic pump head with corresponding noise reduction characteristics.

The invention discloses a structural form analysis method and device for a cross-water-area long and large bridge unmanned aerial vehicle point cloud model and a medium, and the method comprises the following steps: collecting a cross-water-area long and large bridge point cloud model, and extracting an overground point cloud; segmenting the above-ground point cloud to obtain a bridge point cloud; based on the bridge point cloud, removing point cloud noise caused by air scattering and flight attitude calculation errors to obtain a preliminarily denoised bridge point cloud; removing point cloud noise caused by laser radar measurement errors and flight platform vibration, and outputting bridge point cloud subjected to fine denoising; coordinate matrix transformation is carried out on the basis of the bridge point cloud subjected to fine denoising, and the bridge point cloud after coordinate system correction is obtained; segmenting and extracting a main beam point cloud, calculating a main beam point cloud normal vector according to a principal component analysis method, and segmenting and extracting a main beam web point cloud; and obtaining the three-dimensional form of the main beam by adopting a point cloud boundary recognition algorithm based on a normal vector. The technical problems that the unmanned aerial vehicle is large in point cloud noise and difficult in structural form recognition of the cross-water-area long and large bridge are solved.

This invention relates to the field of seismic data processing technology, specifically disclosing a method and apparatus for noise suppression of data from complex piedmont zones. The method includes: converting shot gather data to a cross-domain; suppressing noise in the complex piedmont zone data within the cross-domain; and comparing the noise suppression effects in the shot domain and the cross-domain from both single-shot and stacked perspectives. Based on cross-domain data, this invention suppresses surface wave, anomalous amplitude, and linear interference noise. Compared with the noise suppression results of shot gather data, the signal-to-noise ratio (SNR) of the data is further improved, effectively alleviating the SNR problem in complex piedmont zones and effectively solving the noise problem caused by differences in excitation and reception factors. It can be used for fine structural imaging of complex piedmont zones, providing better basic data for oil and gas exploration in these zones.