1140results about "Noise reduction construction" patented technology

The embodiment of the invention discloses a noise reduction regulation and control method and device for a self-adaptive sound barrier and a medium, and relates to the technical field of noise reduction, and the method comprises the steps: collecting multi-source vehicle noise data which comprises current sound pressure signal time sequence data, preposed sound pressure signal time sequence data and preposed vehicle point cloud data, according to the front sound pressure signal time sequence data and the front vehicle point cloud data, determining a noise source position prediction result corresponding to a sound barrier front node so as to perform sound field prediction on the sound barrier node, and determining a corresponding sound field energy distribution thermodynamic diagram; according to a preset sensitive frequency band threshold value, a target noise high-frequency band needing to be offset is determined in the sound field energy distribution thermodynamic diagram, so that a reverse sound wave signal corresponding to a phase array offset module is generated, and the target noise high-frequency band is offset; and according to the current sound pressure signal time sequence data and the reinforcement learning strategy, determining dynamic sound absorption regulation and control parameters of the dynamic sound absorption module so as to absorb a low-frequency band.

The invention relates to the technical field of sound barriers, and discloses a photovoltaic sound barrier device which comprises a sound barrier main body and a movable photovoltaic panel, a sound barrier unit comprises a photovoltaic panel, a sound absorption material, a frame and a sound insulation back plate, a plurality of photovoltaic battery pieces are arranged in the photovoltaic panel, via holes are uniformly distributed in the area, except for the photovoltaic battery pieces, in the photovoltaic panel, and the sound insulation back plate is arranged in the frame. The photovoltaic panel, the sound absorption material layer and the sound insulation back plate are arranged on the frame with a sound absorption cavity in a covering manner; the movable photovoltaic panel comprises a photovoltaic module, a flexible sealing material layer and an adjusting driving mechanism, the flexible sealing material layer is used for tightly attaching the photovoltaic module to the sound insulation backboard of the sound barrier unit, and the adjusting driving mechanism is used for adjusting the angle of the photovoltaic module facing the sun; when the adjusting driving mechanism retracts, the photovoltaic assembly is attached to the sound barrier unit back plate, and every two adjacent movable photovoltaic panels are tightly attached. The noise reduction effect of sound absorption and sound insulation can be effectively improved, and meanwhile the power generation efficiency is improved.

The invention relates to the technical field of sound absorption, noise reduction and impact resistance, in particular to a multifunctional tunable bionic sound absorption and collision prevention integrated superstructure and a preparation method thereof.The multifunctional tunable bionic sound absorption and collision prevention integrated superstructure comprises a shell, an upper sound absorption layer, a lower sound absorption layer and a middle collision prevention layer, the sound absorption layer is provided with a plurality of curved-surface microwell plates which are connected end to end to form a cavity, and the embedded pipe is combined with the cavity to form a Helmholtz resonator; the anti-collision layer is composed of an energy absorption unit array. The preparation method comprises the steps that a three-dimensional model is firstly built, then a laser scanning mode and parameter printing are set, then heat treatment is conducted, then cutting and layer taking are conducted, and finally the superstructure is manufactured through glue joint. The sound absorption and noise reduction functions and the energy absorption and anti-collision functions are integrated, the sound absorption performance is improved through the bionic structure, energy is efficiently absorbed through the middle layer dot matrix, adjustable performance and lightweight design are achieved through parameterized design, the additive manufacturing process is simple, convenient and efficient, and large-scale production and application are facilitated.

The invention discloses an integrated photovoltaic sound barrier which comprises a single-face power generation photovoltaic sound barrier module, a sound barrier interaction module and a double-face power generation photovoltaic sound barrier module. The structures of the single-sided power generation photovoltaic sound barrier module, the sound barrier interaction module and the double-sided power generation photovoltaic sound barrier module are constructed to be stacked up and down to form a photovoltaic sound barrier body, so that full-frequency noise within the range of 200Hz-2000Hz is effectively absorbed. According to the photovoltaic sound barrier, the photovoltaic power generation function and the sound absorption and insulation noise reduction function of the photovoltaic sound barrier are integrated, through modular design and stacking assembly, the use area and the power generation efficiency of a photovoltaic assembly are effectively improved, the sound absorption frequency band is widened, and the noise reduction effect is improved.

The invention relates to a dynamic control method, system and device for a photovoltaic sound barrier and a medium, and the method comprises the steps: carrying out the dynamic adjustment of the transparency of a photovoltaic cell in the fixed semitransparent photovoltaic sound barrier according to the optimal coverage rate of the photovoltaic cell; according to the acoustic analysis model and the photovoltaic power generation model, obtaining a first inclination angle when the noise reduction effect of the rotary photovoltaic sound barrier is optimal and a second inclination angle when the photovoltaic power generation power of the rotary photovoltaic sound barrier is optimal; establishing a decision optimization model according to the first inclination angle, the second inclination angle and the optimal coverage rate of a photovoltaic cell in the fixed semitransparent photovoltaic sound barrier; and inputting the first inclination angle and the second inclination angle into a decision optimization model for optimization processing to obtain an optimal inclination angle, and controlling the rotary photovoltaic sound barrier to rotate to an optimal working angle based on the angle. The intelligent control degree of the photovoltaic sound barrier is improved, and the noise reduction effect and the power generation efficiency are both improved.

The utility model discloses a novel road sound barrier, and belongs to the technical field of sound absorption and insulation and noise reduction. The novel road sound barrier comprises connecting stand columns arranged at certain intervals and composite plates arranged between the adjacent connecting stand columns, the bottoms of the connecting stand columns are fixed to a base, each composite plate is provided with a metal shell formed by connecting a perforated panel, a back plate and an end keel, and sound absorption cotton / plates are arranged on the metal shells. An elastic supporting metal net is fixedly arranged between the back plate and the sound absorption cotton / plate; sound absorption holes are formed in the perforated panel; the end keel is of a rectangular frame structure and is fixedly connected with the edge of the panel with the holes and the edge of the back plate. The sound absorption device has the beneficial effects that the elastic supporting metal net can be conveniently mounted on the back plate and plays a role in stably supporting the sound absorption cotton / plate; the rainproof structure of the composite board can prevent rainwater from entering the composite board; the novel road sound barrier is convenient to install and construct, stable in structure and capable of meeting the long-time application requirement.

The invention relates to a sound absorber (1) for a traffic route noise protection wall, wherein the sound absorber (1) comprises at least one plastic foam board (2). According to the invention, a first surface (3) of the plastic foam board (2) has a predeterminable number of sound absorber recesses (4) for predetermination of the absorption behavior with a predeterminable frequency response, wherein each of the sound absorber recesses (4) extends only through part of the thickness (5) of the plastic foam board (2).

The utility model discloses a municipal road sound-absorbing barrier structure and municipal road sound-absorbing isolation strip, including first structural layer, second structural layer and silencing layer, the first structural layer is provided with sound-absorbing hole, the sound-absorbing hole extends along the horizontal direction, and the second structural layer is provided with sound-absorbing layer. The top ends of the first structural layer and the second structural layer extend in the direction away from the silencing layer to form a sound absorption space, and at least one scattering plate is arranged in the sound absorption space in the direction from the first structural layer to the second structural layer. The sound absorption holes can increase the energy loss of the noise in the upward transmission process so as to reduce the generation of diffraction noise. By arranging the sound absorption space, the equivalent height of the municipal road sound absorption barrier structure is increased, and noise shielding of the municipal road sound absorption barrier structure is increased. The scattering plate blocks diffraction noise in the sound absorption space to generate scattering diffusion, and the diffraction noise is easier to consume and absorb in the sound absorption space. The sound absorption holes are matched with the sound absorption space and the scattering plate, and the influence of diffraction noise is reduced in multiple stages of generation and transmission of the diffraction noise.

The present invention relates to a noise barrier wall panel that is lighter and more structurally sound than existing concrete noise barrier wall panels. The panel has a metal frame that is reinforced via metal strapping in key areas to prevent sagging. The panel has a plurality of layers forming a laminate that can be fixedly attached to the frame. A finish coating layer may have a plurality of designs, logos, symbols, or textures which may mimic building materials or scenery.

The utility model relates to the technical field of solar sound insulation, in particular to a solar sound insulation screen device which comprises an installation box, a forward and reverse rotation motor is fixedly connected in the installation box, a first gear is installed at the output end of the forward and reverse rotation motor, and a half gear is connected to the surface of the first gear in an engaged mode. According to the utility model, by arranging the first baffle plate, the sealing gaskets, the sound absorption plate, the sound insulation plate, the protection plate, the toothed plate and the telescopic cylinder, when the telescopic cylinder controls the toothed plate to move downwards to transmit the second gear, the photovoltaic panel is overturned upwards, and when the photovoltaic panel is in a vertical state, the sealing gaskets are attached to each other, so that the photovoltaic panel is prevented from being hit by rainy seasons or hails, and the service life of the photovoltaic panel is prolonged. Meanwhile, under the action of the protection plate, the surface of the photovoltaic panel is effectively protected, the situation that external objects collide with the photovoltaic panel, the photovoltaic panel is damaged and use is affected is avoided, and meanwhile under the action of the sound absorption plate and the sound insulation plate, the sound insulation effect on the photovoltaic panel is effectively achieved.

The invention provides a production method of a road sound barrier with light weight, high strength, corrosion resistance and strong sound absorption, and belongs to the technical field of road sound barriers, the production method comprises the following steps: collecting a traffic noise sample by using a high-precision microphone array, extracting noise spectrum characteristics by using a Noi seSpecNet model, and determining that the main noise frequency band is 500-4000 Hz; optimal perforation parameters are calculated through the model; accurately perforating the UHPC board according to the optimized parameters; the perforated UHPC board, basalt fiber cloth, a through-hole ceramic board, a sound insulation felt and other materials are bonded according to the sequence and technology to form a multi-layer composite structure; curing and curing in a constant-temperature and constant-humidity environment; carrying out acoustic performance testing; and finally, the qualified sound barrier unit is installed on a foundation structure and subjected to protection treatment. According to the method, the technical problem that a road sound barrier in the prior art is difficult to realize efficient sound absorption for traffic noise of a specific frequency band is solved.

To provide a technology that enables relatively easy installation of solar cell panels on sound insulation walls.SOLUTION: A sound insulation wall includes multiple pillars having H-shaped cross section erected along a road and sound insulation panels supported between the pillars; there are solar cell panels disposed between the pillars so as to face the sound insulation panels in the width direction of the road, and supporting members provided at each end of the solar cell panels in the extension direction of the road for supporting the solar cell panels on the pillars; the supporting member includes a panel mounting portion supporting the end part of the solar cell panel, and a flange mounting portion that extends in the vertical direction and has a groove into which the flange of the pillar is inserted.SELECTED DRAWING: Figure 3

The utility model relates to an angle-adjustable photovoltaic sound barrier device. The angle-adjustable photovoltaic sound barrier device comprises sound barrier equipment, a photovoltaic assembly, a first adjusting assembly, a second adjusting assembly and a damping adjuster. One end of the first adjusting assembly is connected with the sound barrier equipment, and the other end is rotationally connected with the photovoltaic assembly; the second adjusting assembly and the first adjusting assembly are arranged at an interval in the height direction of the photovoltaic assembly, and the second adjusting assembly comprises a second mounting piece and a sliding rod which are rotationally connected with each other; one end, deviating from the sliding rod, of the second mounting part is fixedly connected with the sound barrier equipment; the sliding rod is slidably connected with the photovoltaic module; one end of the damping regulator is connected with the sound barrier equipment, and the other end is connected with the slide bar. When the mounting angle of the photovoltaic module relative to the sound barrier equipment needs to be adjusted, the change of the mounting angle can be more stable through the damping effect of the damping adjuster; meanwhile, after the adjustment is completed, the installation stability of the photovoltaic module relative to the sound barrier equipment is relatively high through the supporting effect of the damping adjuster.

The invention relates to the technical field of sound barriers, in particular to a full-band super-structure evacuation near-rail sound barrier which comprises a bottom mounting unit and a top sound absorption unit opposite to the bottom mounting unit, and the bottom mounting unit and the top sound absorption unit define a frame unit through side fixing units; unit plates are installed in the frame units so that the sound absorption performance can be achieved through combined arrangement of the super-structure sound absorption modules (A) and the sound absorption cotton (B). The top sound absorption unit is matched with the frame unit, and the interference noise elimination effect of the whole structure is improved. The sound absorption structure is arranged at the top, the sound transmission direction can be changed through diffraction, sound diffraction is reduced, the noise reduction effect is improved, and the height of the sound barrier is equivalently increased. Aiming at the problem of poor low-frequency noise reduction effect of the existing sound barrier, the invention provides a super-structure sound absorption module which can be designed in a targeted manner according to the requirements of frequency spectrum, especially aiming at low-frequency noise, so that the effect of full-frequency-band noise reduction is achieved.

The utility model relates to a photovoltaic sound barrier device. The photovoltaic sound barrier device comprises a photovoltaic assembly, sound barrier equipment and a mounting assembly. The sound barrier equipment comprises two sound barrier plates oppositely arranged in the first direction and at least two sets of supporting assemblies installed between the two sound barrier plates at intervals. The mounting assembly is arranged on the side, away from the other sound barrier plate, of one sound barrier plate in the first direction, and the mounting assembly is connected between the supporting assembly and the photovoltaic assembly. When the photovoltaic sound barrier device is used, the supporting assembly is connected with the photovoltaic assembly through the mounting assembly. According to the mounting assembly, the photovoltaic assembly can be directly hung on the periphery of traditional sound barrier equipment, so that the traditional sound barrier equipment in use or processed traditional sound barrier equipment does not need to be directly replaced with a photovoltaic sound barrier product with relatively high cost, and only improvement is needed; compared with the replacement cost, the cost is lower, and the resource waste is also reduced.

The utility model discloses a road bridge noise reduction device of road bridge engineering, and relates to the technical field of road bridge sound insulation, the road bridge noise reduction device comprises a base (1) and a sound insulation layer (4), the base (1) is provided with an installation frame (2), the two sides of the installation frame (2) are respectively provided with a convex block (3) and an inlet opening (22), the installation frame (2) is of a concentric-square-shaped structure, the inner side of the installation frame (2) is provided with an installation groove (21), and the installation groove (21) is provided with a sound insulation layer (4). The sound insulation layer (4) is arranged in the mounting groove (21) through the inlet opening (22), a fixing mechanism (5) is arranged at the end, close to the inlet opening (22), of the mounting frame (2), the fixing mechanism (5) is attached to the sound insulation layer (4), and the problems that an existing sound reduction device is generally of an integrated structure, the occupied space is large, and the manufacturing cost is high are solved. And once the device is damaged, the device is difficult to overhaul or disassemble and assemble.

The invention discloses a road sound insulation screen utilizing traffic flow wind energy for power generation, and relates to the technical field of sound insulation screens, the road sound insulation screen comprises sound insulation screen bodies and wind energy power generation mechanisms, a plurality of wind energy power generation mechanisms are arranged side by side in rows, and the sound insulation screen bodies are arranged at air inlets and / or behind the wind energy power generation mechanisms; the wind power generation mechanism can utilize traffic flow wind to generate power, and the sound insulation screen body can reduce noise of the traffic flow wind. Road wind power generation and the sound insulation screen are combined, noise generated by vehicles running at a high speed can be isolated, meanwhile, wind energy generated by traffic flow can be collected, effective utilization of wind power generation in the traffic field is achieved, the development concept of energy exchange fusion can be practiced, and the problems of carbon emission and air pollution of thermal power generation are solved.

The invention discloses a wind power generation sound barrier, and relates to the technical field of sound-absorbing barriers, and the wind power generation sound barrier comprises a sound barrier which is used for being installed beside an external road and used for absorbing noise generated by motor vehicle driving; a plurality of groups of sound barriers can be spliced to define a length-adjustable sound absorption structure; airflow generated when a motor vehicle passes through the sound barrier drives the generator to operate and generate electricity through the driving wheel, the turbine-shaped blades are driven by the airflow generated when the motor vehicle runs to rotate, kinetic energy which is originally wasted is converted into electric energy, and energy recycling is achieved; the total length of the sound barrier and the density of the generator set can be flexibly adjusted according to the road length and the traffic flow through the combination of the spliced sound barrier unit and the multiple groups of independent power generation units (driving wheels and generators), and the requirements of different scenes are met.

The invention provides a modularized installation and construction method for a semi-closed sound barrier of a high-speed railway, and belongs to the technical field of semi-closed sound barriers of high-speed railways. Comprising a road surface, sound absorption barriers are arranged on the left side and the right side of the road surface respectively, high-precision sound pressure sensors are arranged on the inner side surfaces, close to the left side and the right side, of the sound absorption barriers respectively, and a broadband frequency analyzer is connected to the bottoms of the high-precision sound pressure sensors. A solar photovoltaic power generation function and a noise reduction function of the sound barrier are combined by arranging the photovoltaic panel on the outer side of the arc-shaped sound absorption barrier, in addition, the high-precision sound pressure sensor, the broadband frequency analyzer and the intelligent control system are fused into an intelligent monitoring sound barrier module through the intelligent technology, and a noise monitoring sensor, an environment monitoring sensor and other sensors are integrated; the noise level, the air quality, the temperature, the humidity and other environmental parameters around the sound barrier are monitored in real time, data are transmitted to the management center, and the performance state of the sound barrier and the change of the surrounding environment are known in time through data analysis.

The utility model relates to the technical field of sound insulation barriers, in particular to an anti-collision sound insulation barrier which comprises a concrete pier. The I-shaped stand column is arranged on the concrete pier; the sound insulation plates are arranged on the I-shaped stand columns; the anti-collision part is arranged on the concrete pier, the two ends of the sound insulation plate are bent to form C-shaped clamping strips, a supporting column is arranged on the inner side of the I-shaped stand column, the two sides of the supporting column are fixedly riveted with the I-shaped stand column and the C-shaped clamping strips respectively, and the anti-collision part comprises a guardrail; and at least one group of cushioning mechanisms are arranged and are connected with the guardrails and the concrete piers. An anti-collision type sound insulation barrier is provided for highways, viaducts and the like through an assembly composed of the concrete piers, the I-shaped stand columns, the sound insulation plates and the anti-collision parts, the concrete piers serve as foundation protection supports for protection, the anti-collision parts serve as energy absorption mechanisms for relieving impact, impact is relieved, vehicles and the road surface are protected, and a certain anti-collision effect is achieved; and the safety of road surface driving is improved.

The utility model discloses a snow falling prevention device suitable for a bridge totally-enclosed sound barrier, which comprises steel stand columns and a steel camber beam, the lower surface of the steel camber beam is symmetrically and fixedly connected with the steel stand columns, the steel camber beam and the steel stand columns form the complete totally-enclosed sound barrier, the upper surface of the steel camber beam is symmetrically and fixedly connected with steel support base plates, and the steel support base plates are fixedly connected with the steel support base plates. The upper surface of the steel support bottom plate is fixedly connected with a square steel pipe in an inner cavity of the steel support vertical plate, and the outer wall of the square steel pipe is fixedly connected with a baffle. Through physical blocking, accumulated snow is effectively prevented from sliding from the sound barrier, the traffic accident risk caused by accumulated snow sliding is greatly reduced, and therefore the safety of road traffic is guaranteed, the structure is stable, durability is high, if the device is made of high-strength and corrosion-resistant materials, it can be better guaranteed that the device can be kept stable under various severe weather conditions, and the service life of the device is prolonged. In addition, the structural design is also elaborately optimized, so that it is ensured that the device can still keep stable when bearing accumulated snow pressure and wind and snow impact.

The present invention discloses a rail transit sound barrier based on phononic crystal cells, which is divided into several cells of equal volume by dividing modules; a resonance cavity with an opening on one side is embedded in each cell; one side of the opening of the resonance cavity faces the sound source; the opening extends outward in a trumpet shape to increase the sound receiving area; several phononic crystal cells that do not contact each other are fixedly arranged in the resonance cavity; the resonance cavity in the present invention can achieve triple acoustic performance improvements, namely sound insulation, sound elimination and sound absorption: its overall appearance belongs to a Holmhelix resonance cavity, which is itself a good sound elimination device, which is the first sound elimination; the trumpet-like opening structure on the sound source side is conducive to the introduction of sound waves, and the phononic crystal cells are arranged inside, which is the second sound insulation of the device; the tail adopts a boss with the same size as the end of the trumpet mouth, which is conducive to the flow of sound waves, and a certain thickness of sound-absorbing rock wool is used on the inner wall of the tail, which is the third sound absorption.

The invention discloses a sound barrier made of a tailing material and a preparation method of the sound barrier, and belongs to the technical field of sound barriers. The sound barrier comprises a base material, a functional additive and a self-healing additive, and the base material mainly adopts tailing particles and is compounded with alumina powder, Portland cement and nano-hydroxyapatite; the functional additive is prepared from a polypyrrole-polyaniline compound, silicon dioxide nano aerogel, nano molybdenum disulfide particles and polyacrylate coated paraffin microcapsules; the self-healing additive is prepared from polyurethane coated epoxy resin microcapsules, polyurethane coated amine curing agent microcapsules, CaCO3 microcrystals, nano montmorillonite particles and nano nickel coated carbon particles. Resource utilization of the tailings is achieved, and the mechanical property, the sound absorption and insulation performance, the self-healing performance and the weather resistance of the sound barrier are remarkably improved.

The utility model relates to the technical field of sound barriers, in particular to a sound barrier with a protection mechanism, and adopts the technical scheme that the sound barrier with the protection mechanism comprises stand columns, a barrier plate, grooves, convex blocks, a protection plate and first anchoring holes; three barrier plates which are arranged from top to bottom are arranged between the two stand columns which are opposite in the left-right direction, grooves are formed in the stand columns, the left sides and the right sides of the barrier plates are fixedly connected with protruding blocks matched with the grooves, the front portions and the rear portions of the stand columns are each provided with two protection plates located at the joints of the barrier plates, and four first anchoring holes are formed in each protection plate. According to the sound barrier, an existing sound barrier is improved, the protection plates located on the front side and the rear side of the joint of the barrier plates are additionally arranged on the stand columns, the protection plates are tightly attached to the joint of the barrier plates, the joint of the barrier plates is protected, the phenomena of air leakage and sound leakage at the joint of the barrier plates can be prevented, and the noise reduction efficiency of the sound barrier is improved.

The utility model discloses a sound barrier structure arranged back to a noise source, which comprises a T-shaped device body, the top end of the device body is provided with a sound absorber structure, the sound absorber structure comprises a plurality of tip sound absorbers which are arranged in sequence, each tip sound absorber is of an isosceles right triangle structure, and the tip sound absorbers are arranged at the top end of the T-shaped device body. The first right-angle side of each tip sound absorber serves as the bottom of the tip sound absorber and is connected with the top end of the T-shaped device body, the first right-angle sides and the inclined sides are arranged in the mode that the first right-angle sides and the inclined sides do not face a noise source, namely the second right-angle sides are opposite to the noise source, and the second right-angle side of each tip sound absorber serves as the height of the tip sound absorber and is right opposite to the noise source in a vertical mode. Compared with the prior art, the sound barrier structure has the highest insertion loss value within the center frequency range of 500 Hz to 1600 Hz, so that the sound wave absorption rate is highest, and the noise reduction effect is best.

The utility model discloses a road totally-closed photovoltaic sound barrier, which belongs to the technical field of road sound barriers, and comprises a frame, photovoltaic sound barrier screen bodies, a transparent PC (polycarbonate) board, a transparent screen body and a metal screen body, a purline is arranged at the top of the frame, the photovoltaic sound barrier screen bodies are detachably connected to the purline, a first gap is formed between the photovoltaic sound barrier screen bodies, and a second gap is formed between the transparent PC board and the metal screen body. The transparent PC board is arranged at the top corner of the frame, a second gap is formed between the transparent PC board and the photovoltaic sound barrier body, the metal screen body and the transparent screen body are arranged on the side face of the frame, the transparent screen body is located on the metal screen body, the top of the transparent screen body extends into the inner side of the transparent PC board, and waterproof sealing rubber strips are arranged in the first gap and the second gap. The photovoltaic sound barrier screen body is directly used as the top sound absorption screen body of the totally-closed sound barrier, photovoltaic power generation and sound insulation and noise reduction are integrated, on one hand, urban noise pollution is reduced, and on the other hand, urban photovoltaic construction land pressure is relieved.

The invention discloses a sound barrier self-adaptive acoustic diffuser regulation and control method, equipment and a medium, and relates to the technical field of sound barrier regulation and control. The method comprises the steps that noise signals on the two sides of a sound barrier are collected, and traffic flow data and meteorological parameters are synchronously obtained; performing multi-scale spectrum analysis on the noise signal to obtain spectrum features; calculating a sound field coupling effect between adjacent units according to the topological connection relationship of the diffuser units; inputting the spectrum characteristics, the traffic flow, the meteorological parameters and the sound field coupling effect into a pre-trained mapping model to generate a regulation and control instruction; the diffuser units are driven to adjust geometric parameters according to the regulation and control instruction, the adjustment priority of the diffuser units is distributed, and the geometric parameters comprise the groove depth and the distance between every two adjacent units. According to the method, the wide-frequency-band noise suppression effect is improved, the sound energy transfer matrix is constructed, the insertion loss contribution rate is calculated, the priority is scientifically distributed and adjusted, and overall performance reduction caused by local optimization is avoided.

The invention provides a resonant cavity broadband sound barrier based on a double-helix acoustic black hole. The resonant cavity broadband sound barrier comprises a plurality of double-helix acoustic black hole resonant cavity broadband sound absorption structure cells and a supporting and connecting assembly. The multiple double-spiral acoustic black hole resonant cavity broadband sound absorption structure cells are connected together through the supporting and connecting assemblies, and a plate-shaped sound barrier is formed; the double-spiral acoustic black hole resonant cavity broadband sound absorption structure cell is in the shape of a hollow regular hexagon nut, the inner side face of the cell is open, and six cavities with the inner sides open are formed in the cell. Two spiral curved surface rolling plates with the same or different spiral curve parameters are arranged in each cavity; the curved surface of the spiral curved surface rolling plate is perpendicular to the upper end face and the lower end face of the double-spiral acoustic black hole resonant cavity broadband sound absorption structure cell. A plurality of protruding teeth are distributed on the inner side face and the outer side face of the spiral curved-surface rolling plate. The invention has the advantages that the broadband sound absorption characteristic is realized; certain ventilation and lighting performance is achieved, and the driving environment of an inner channel of the closed traffic sound barrier can be more comfortable.

The invention relates to a sound insulation screen for a road, and relates to the technical field of sound insulation screens, the sound insulation screen comprises a main body, supporting plates are fixedly arranged on the two opposite side edges of the lower portion of the main body, and supporting holes are formed in the supporting plates; a receding notch is formed in the bottom side of the main body, a moving block rotating around the vertical face is rotationally arranged in the receding notch of the main body, and a plurality of moving wheels are fixedly arranged on the edge of the side face, away from the main body, of the moving block. Locking pieces for limiting the vertical state of the moving block are arranged on the two opposite sides of the main body, the moving wheel protrudes out of the bottom side face of the main body when the moving block is in the vertical state, and one side face of the moving block is flush with the bottom side face of the main body when the moving block is in the horizontal state; according to the sound insulation screen, when the sound insulation screen needs to move in a short distance, the moving blocks are adjusted to be in the vertical state and are limited and locked through the locking pieces, the moving wheels protrude out of the bottom side face of the main body, the sound insulation screen can be moved through fewer workers, and the efficiency during short-distance movement is improved.

The invention discloses a novel double-sided photovoltaic sound barrier, and relates to the field of photovoltaic technology, the novel double-sided photovoltaic sound barrier comprises two mounting parts, and a transparent ultramicro perforated panel assembly and a photovoltaic panel assembly are inserted between the two mounting parts; locking units used for synchronously locking the transparent ultramicro perforated panel assembly and the photovoltaic panel assembly are arranged on the two mounting pieces respectively, and each locking unit comprises a first locking rod and a second locking rod which are slidably connected to the corresponding mounting pieces respectively; the operation part is arranged on the mounting piece and is used for driving the first lock rod to be slidably inserted into a first lock hole formed in the transparent ultramicro perforated panel assembly and driving the second lock rod to be slidably inserted into a second lock hole formed in the photovoltaic panel assembly; an operator can lock and fix the transparent ultramicro perforated panel assembly and the photovoltaic panel assembly on the mounting piece only by one step, so that the transparent ultramicro perforated panel assembly and the photovoltaic panel assembly can be more stably mounted on the mounting piece while the operation of the operator is facilitated.