A multi-parameter linkage dustproof and noiseproof integrated method, system, product and medium for residential area construction

Abstract

A residential area construction multi-parameter linkage dustproof and noise prevention integrated method, system, product and medium, relate to the field of control and regulation system. The method comprises: collecting multi-dimensional environment and noise data of the construction area in real time; when the high-low layer noise ratio breaks through the critical coefficient of the sound guide pipe due to continuous spraying, the pulse duty cycle is calculated according to the wind speed and dust settling time; the main frequency of the bottom noise is extracted to match the water mist particle size, and the spraying equipment is adjusted to the corresponding target pressure; the spraying equipment is controlled to perform pulse spraying according to the set duty cycle and pressure; the temperature and humidity gradient is synchronously obtained to calculate the sound refraction deviation angle; the height of the shadow area which is invalid due to the upward refraction of sound waves is calculated combined with the window coordinates of the surrounding residential area; and the liftable sound insulation fence is driven to compensate for the height of the shadow area. The technical scheme provided by the application improves the construction environmental protection compliance rate of the construction site.

Description

Technical Field

[0001] This application relates to the field of control and regulation systems, and in particular to a method, system, product, and medium for integrated dust and noise control with multi-parameter linkage during construction in residential areas. Background Technology

[0002] Currently, with the accelerating pace of urban renewal and renovation, large-scale construction around existing residential areas has become commonplace. Effectively controlling construction dust and machinery noise during construction, and minimizing the impact on the normal lives of nearby residents, has become a crucial indicator for evaluating the level of green construction and the effectiveness of urban environmental governance.

[0003] In related technologies, dust sensors and noise monitors are typically deployed at the construction site boundary to collect environmental parameters in real time. When the dust concentration exceeds a preset threshold, a high-pressure spray system or fog cannon is triggered to spray water mist to cause airborne suspended particles to settle due to gravity. Simultaneously, fixed or retractable soundproof barriers are typically used to physically block construction noise. Some advanced systems can linearly adjust the pressure of the spray pump or the physical height of the barriers based on the monitored decibel level or dust concentration to achieve automated environmental response.

[0004] However, in narrow building gaps or under stable weather conditions, the continuous high-power spraying used to suppress high concentrations of dust can easily lead to secondary acoustic degradation. Under these conditions, the continuous heat generated by heavy construction machinery on the lower level and the heat absorbed by the vaporization of large amounts of water mist in the air combine to form a vertical temperature gradient. Simultaneously, the relative humidity in the space rapidly saturates, causing fine mist droplets to collide and agglomerate into large-diameter water droplets, losing their viscous dissipation efficiency for low-frequency construction noise. According to the sound wave propagation mechanism, sound waves always bend towards the lower temperature (lower sound velocity) medium layer. This vertical temperature difference causes the sound energy, which should diffuse outwards, to refract upwards. Combined with the physical reflection constraints of the rigid exterior walls of the high-rise buildings on both sides, and the medium compression of the high-density two-phase flow suspended water droplets, a thermoacoustic coupling waveguide channel is formed within the construction area. This allows low- and mid-frequency noise to be directionally transmitted upwards along this temperature and medium density gradient layer, with low loss, to the windows of the high-rise residential buildings. Ultimately, while dust concentration decreased, noise pressure levels on the high-rise residential side increased abnormally, reducing the overall environmental compliance rate in complex environments. Summary of the Invention

[0005] This application provides a method, system, product, and medium for multi-parameter linkage dust and noise control in residential construction, which can be used to improve the environmental protection compliance rate of construction sites.

[0006] A method is provided in the first aspect of this application, the method comprising: Acquire first noise data from the bottom of the construction surface, second noise data from the boundary of the high-rise residential area, dust concentration data, and the operating status of the spraying equipment; also acquire the current spatial wind speed and dust settling time to the boundary. When the spraying equipment is operating continuously and the dust concentration is decreasing, and the ratio of the change in sound pressure level between the second noise data and the first noise data exceeds the preset critical coefficient of the acoustic duct, calculate the duty cycle of the pulse jet based on the spatial wind speed and dust settling time to the boundary. Extract the peak dominant frequency from the first noise data, and determine the frequency matching the peak dominant frequency based on the preset mapping relationship between noise frequency and water mist particle size. The target water mist particle size is determined, and the output pressure of the spraying equipment is adjusted to the target pressure, where the average droplet size corresponding to the target pressure is the target water mist particle size. The spraying equipment is controlled to spray according to the duty cycle and the target pressure. The vertical temperature gradient data and relative humidity data of the current construction area are acquired, and the sound wave refraction offset angle of the current air medium is calculated based on the vertical temperature gradient data and relative humidity data. Based on the sound wave refraction offset angle and the pre-acquired spatial coordinates of the windows in the residential area, the height of the sound shadow zone due to sound wave refraction failure is calculated. The height of the adjustable soundproof fence is controlled to increase the height of the sound shadow zone based on the current height.

[0007] In the above embodiments, by dynamically controlling the spray pulse duty cycle and droplet size, the acoustic conduit effect formed in high humidity environments is blocked, avoiding secondary gain in noise propagation caused by dust suppression operations. Simultaneously, by combining the sound wave refraction law caused by temperature and humidity gradients, the protective height of the soundproof enclosure is compensated in real time, eliminating noise leakage caused by the failure of the sound shadow zone. This multi-parameter linkage mechanism achieves the coupling and intervention of dust suppression and noise reduction at the physical level, ensuring the synergistic optimization of various environmental protection indicators in complex construction environments, ultimately improving the environmental compliance rate of construction sites.

[0008] In conjunction with some embodiments of the first aspect, in some embodiments, after controlling the spraying device to spray according to the duty cycle and target pressure, the method further includes: The distance between buildings on both sides of the construction area is obtained, and the collision and aggregation probability of droplets is calculated by combining the relative humidity and the duty cycle of the pulse jet. When the collision and aggregation probability is greater than the preset aggregation threshold, the physical height of the sound source corresponding to the first noise data is obtained, and the suspension time of the droplets from the spraying equipment to the physical height of the sound source is calculated. Based on the suspension time and the collision and aggregation probability, the particle size expansion coefficient of the physical height of the sound source is calculated. The target water mist particle size is divided by the particle size expansion coefficient to calculate the pre-compensated initial particle size. The output pressure of the spraying equipment is adjusted to the target overpressure value.

[0009] In the above embodiments, by online monitoring and real-time pre-compensation of the aggregation and evolution of droplets in a narrow, high-humidity space, and by implementing inverse pre-compensation for particle size accordingly, the degradation of medium parameters caused by environmental factors is offset. This ensures that the physical particle size of the water mist is locked within the optimal frequency band for acoustic absorption when it reaches the core region of the sound source. This control over the physical properties of the propagation medium avoids absorption frequency mismatch and improves the acoustic intervention accuracy and noise reduction stability of the system in complex spaces.

[0010] In conjunction with some embodiments of the first aspect, in some embodiments, adjusting the output pressure of the spraying device to the target overpressure value specifically includes: Obtain the initial horizontal range corresponding to the target overpressure value. When the initial horizontal range is greater than the preset proportional threshold of the distance between the two buildings, calculate the jet collision angle based on the distance between the two buildings and the physical height of the sound source. Select two sets of nozzles with opposite spray directions in the spraying equipment and adjust the output pressure of both sets of nozzles to the target overpressure value. Control the two sets of nozzles to spray crosswise according to the jet collision angle.

[0011] In the above embodiment, the excessive horizontal kinetic energy brought about by high-pressure atomization is offset by the principle of conservation of momentum through the cross collision of two sets of relative jets. This suppresses the water loss caused by the droplets hitting the wall in the narrow space, and transforms the originally high-speed sound-absorbing medium into a low-speed suspended state above the sound source. This ensures the integrity and retention concentration of the noise reduction barrier in the confined space, and solves the conflict between high-pressure fine atomization and range control from a physical perspective, thereby enhancing the acoustic intervention efficiency of the system in extremely narrow working conditions.

[0012] In conjunction with some embodiments of the first aspect, in some embodiments, controlling the height of the adjustable soundproof enclosure to rise above the current height of the sound shadow zone specifically includes: Acquire first local humidity data on the inner side of the top edge of the liftable soundproof enclosure and second local humidity data on the outer side of the top edge; calculate the acoustic impedance abrupt change rate at the top edge based on the difference between the first and second local humidity data; determine the vertical width of the air humidity gradient zone based on the acoustic impedance abrupt change rate; control the opening of the auxiliary micro-mist line installed on the top of the liftable soundproof enclosure and adjust the spray flow rate of the auxiliary micro-mist line; while the height of the sound shadow zone of the liftable soundproof enclosure increases, construct an air humidity gradient layer with decreasing humidity from the inside to the outside above the top edge through the auxiliary micro-mist line, wherein the vertical height of the air humidity gradient layer is equal to the vertical width.

[0013] In the above embodiments, by dynamically constructing an air gradient layer with continuously decreasing humidity at the top of the soundproof enclosure, the abrupt change in acoustic impedance is transformed into a smooth transition, forming an acoustic soft edge above the physical boundary. This continuous change in medium properties disrupts the physical conditions for strong sound wave diffraction, weakens the diffraction ability of sound waves around the top of the enclosure, and curbs top noise leakage. Without continuously increasing the height of the physical enclosure, the shielding range of the sound shadow zone is deepened, and the sound insulation performance of the physical barrier in complex environments is improved.

[0014] In conjunction with some embodiments of the first aspect, in some embodiments, after constructing an air humidity gradient layer with decreasing humidity from the inside out above the top edge by means of auxiliary micro-mist lines, the method further includes: Obtain the cross-sectional density distribution data of the air humidity gradient layer and equate the air humidity gradient layer to an acoustic gradient refractive index lens model; calculate the acoustic focal zone spatial position of the sound wave corresponding to the first noise data after refraction through the air humidity gradient layer based on the refractive index distribution of the acoustic gradient refractive index lens model; when the acoustic focal zone spatial position falls within a preset range of the window in the residential area, calculate the disturbance frequency based on the peak dominant frequency of the first noise data; control the water supply pressure of the auxiliary micro-mist line to pulsate at high frequency according to the disturbance frequency.

[0015] In the above embodiments, by treating the humidity gradient layer as an equivalent acoustic lens model, the risk of acoustic focusing caused by medium inhomogeneity was identified. By applying high-frequency pressure pulsations to the auxiliary micro-mist line, controlled density perturbations were introduced into the originally smooth gradient medium, causing the sound wave propagation path to change from directional refraction to disordered scattering. This disrupted the conditions for the formation of the acoustic focal zone and eliminated secondary interference from local noise hotspots to residential areas. This proactive intervention ensured the spatial uniformity of the noise reduction effect, avoided the secondary acoustic negative effects that physical noise reduction methods might bring, and improved the system's reliability in complex acoustic environments.

[0016] In conjunction with some embodiments of the first aspect, in some embodiments, after calculating the height of the sound shadow zone due to sound wave refraction failure based on the sound wave refraction offset angle and the pre-acquired spatial coordinates of the residential area window, the method further includes: The system acquires real-time heating parameters of mechanical heat sources within the construction area and the distance between buildings on both sides of the construction area. Based on the real-time heating parameters and the distance between buildings on both sides, it calculates the vertical updraft speed within the construction area. Based on the vertical updraft speed and the suspension characteristics of the water mist generated by the pulse jet, it calculates the vertical displacement deviation of the water mist medium as it drifts upward with the hot airflow. Based on the vertical displacement deviation, it corrects the height of the sound shadow zone to obtain the compensated target enclosure height. It then controls the liftable soundproof enclosure to rise to the target enclosure height.

[0017] In the above embodiments, by quantifying the lifting effect of thermal convection caused by mechanical heat sources on the sound wave propagation medium, the physical boundary of the sound shadow zone is dynamically corrected. This solves the problem of the overall upward shift of the acoustic protection range caused by the chimney effect in narrow spaces, prevents the originally protected area from being exposed to the diffracted sound field due to medium drift, ensures the spatial coverage integrity of the acoustic barrier in complex thermal field environments, and improves the environmental compliance rate of construction sites.

[0018] In conjunction with some embodiments of the first aspect, in some embodiments, after controlling the height of the sound shadow zone of the height-adjustable soundproof enclosure to rise from its current height, the method further includes: Based on the distance between the buildings on both sides, the sound velocity under relative humidity, and the current height of the liftable soundproof fence, calculate the inherent resonant frequency of the current construction area; if the peak frequency of the first noise data is within the preset resonant bandwidth of the inherent resonant frequency, calculate the non-resonant correction height to avoid the resonant amplification effect, wherein the deviation between the non-resonant correction height and the height of the sound shadow zone is within the preset fine-tuning range; control the height of the liftable soundproof fence to be fine-tuned to the non-resonant correction height.

[0019] In the above embodiments, by real-time identification of the acoustic resonant cavity formed in the construction area and implementing highly fine-tuning based on frequency avoidance, the geometric boundary conditions of the cavity are changed, causing the inherent resonant frequency of the space to shift. This breaks the physical basis for the resonance between the noise master frequency and the building space, eliminating the abnormal gain caused by sound wave superposition. This ensures that the soundproof enclosure performs its shielding function without generating secondary noise enhancement due to the cavity effect, improving the noise reduction accuracy and acoustic environment stability of the system under complex geometric conditions.

[0020] Secondly, embodiments of this application provide a multi-parameter linkage dust and noise control integrated system for residential construction. The multi-parameter linkage dust and noise control integrated system for residential construction includes: one or more processors and a memory; the memory is coupled to the one or more processors, and the memory is used to store computer program code, the computer program code including computer instructions, and the one or more processors call the computer instructions to cause the multi-parameter linkage dust and noise control integrated system for residential construction to perform the method described in the first aspect and any possible implementation of the first aspect.

[0021] Thirdly, embodiments of this application provide a computer program product containing instructions that, when the computer program product is run on a multi-parameter linkage dust and noise control integrated system for residential construction, causes the multi-parameter linkage dust and noise control integrated system for residential construction to execute the method described in the first aspect and any possible implementation thereof.

[0022] Fourthly, embodiments of this application provide a computer-readable storage medium including instructions that, when executed on a multi-parameter linkage dust and noise control integrated system for residential construction, cause the multi-parameter linkage dust and noise control integrated system for residential construction to perform the method described in the first aspect and any possible implementation thereof.

[0023] It is understood that the integrated dust and noise control system for residential construction with multi-parameter linkage provided in the second aspect, the computer program product provided in the third aspect, and the computer storage medium provided in the fourth aspect are all used to execute the integrated dust and noise control method for residential construction with multi-parameter linkage provided in the embodiments of this application. Therefore, the beneficial effects that can be achieved can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0024] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: 1. This application, through dynamic control of the spray pulse duty cycle and droplet size, blocks the acoustic conduit effect formed in high humidity environments, avoiding secondary gain in noise propagation caused by dust suppression operations. Simultaneously, by combining the sound wave refraction law induced by temperature and humidity gradients, it compensates for the protective height of the soundproof enclosure in real time, eliminating noise leakage caused by the failure of the sound shadow zone. This multi-parameter linkage mechanism achieves the coupling and intervention of dust suppression and noise reduction at the physical level, ensuring the synergistic optimization of various environmental protection indicators in complex construction environments, ultimately improving the environmental compliance rate of construction sites.

[0025] 2. This application achieves online monitoring and real-time pre-compensation of the aggregation and evolution of droplets in narrow, high-humidity spaces, and implements inverse pre-compensation of particle size accordingly. This counteracts the degradation of medium parameters caused by environmental factors, ensuring that the physical particle size of the water mist is locked within the optimal frequency band for acoustic absorption when it reaches the core region of the sound source. This control over the physical properties of the propagation medium avoids absorption frequency mismatch and improves the acoustic intervention accuracy and noise reduction stability of the system in complex spaces.

[0026] 3. This application utilizes the principle of momentum conservation to counteract the excessive horizontal kinetic energy brought about by high-pressure atomization through the cross collision of two sets of opposing jets, thereby curbing the water loss caused by droplets hitting the wall in a narrow space. This transforms the originally high-speed sound-absorbing medium into a low-speed suspended state above the sound source, ensuring the integrity and retention concentration of the noise reduction barrier in the confined space. It solves the conflict between high-pressure fine atomization and range control from a physical perspective, enhancing the acoustic intervention efficiency of the system under extremely narrow operating conditions. Attached Figure Description

[0027] Figure 1 This is a flowchart illustrating a multi-parameter linkage dust and noise control integrated method for residential construction in this application embodiment; Figure 2 This is another flowchart illustrating the multi-parameter linkage dust and noise control integrated method for residential construction in this application embodiment; Figure 3 This is an exemplary hardware structure diagram of a multi-parameter linkage dust and noise control integrated system for residential construction in this application embodiment. Detailed Implementation

[0028] The terminology used in the following embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” “the,” and “this” are intended to include the plural expressions as well, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this application refers to and includes any or all possible combinations of one or more of the listed items.

[0029] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0030] In related technologies, high-pressure spraying is typically triggered by environmental monitoring to suppress dust, and soundproof barriers are used for physical isolation. However, in confined construction spaces, continuous high-power spraying to suppress dust can easily lead to secondary acoustic degradation. Under these conditions, the combined effect of mechanical heat generation at the lower level and heat absorption from water vaporization in the air creates a strong vertical temperature gradient; simultaneously, local humidity saturation causes fine droplets to agglomerate, losing their ability to dissipate low-frequency noise. Affected by this temperature difference, sound waves are significantly refracted upwards towards the lower temperature layer. Combined with the physical reflection constraints of the building's exterior walls on both sides, a thermoacoustic coupling waveguide channel is formed within the construction area, causing mid-to-low frequency construction noise to be transmitted directionally to the upper-floor windows with low loss. This results in an abnormally high sound pressure level on the residential side when dust settles.

[0031] In this embodiment, the triggering state of the sound duct effect is identified by real-time monitoring of the ratio of sound pressure level changes between residential areas and the construction site. Instead of blindly continuing spraying, the duty cycle of the pulse jet is dynamically calculated based on the spatial wind speed and dust settling time, blocking the directional transmission channel of sound waves through a discontinuous medium. Simultaneously, the peak noise frequency is extracted and matched with the target water mist particle size to achieve efficient sound energy absorption. Furthermore, to address the sound wave refraction phenomenon caused by temperature and humidity gradients, the refraction offset angle is calculated, and the height of the sound shadow zone is dynamically compensated accordingly. This multi-dimensional, coordinated adjustment not only solves the problem of secondary noise gain caused by dustfall but also ensures noise reduction in high-rise areas through physical barrier compensation, improving the overall environmental performance of the construction site.

[0032] Figure 1 This is a flowchart illustrating the integrated dust and noise control method for multi-parameter linkage during residential construction as described in this application, including the following steps: S101. Obtain the first noise data at the bottom of the construction surface, the second noise data at the boundary of the high-rise residential area, the dust concentration data, and the operating status of the spraying equipment, and obtain the current spatial wind speed and the time for dust to settle to the boundary.

[0033] Among them, the first noise data refers to the initial sound pressure level and spectrum information collected by a microphone array deployed near the sound source at the construction site, such as mechanical roaring; the second noise data is used to represent the actual received sound pressure level propagating to the protected boundary of the residential area (such as outside the windows of high-rise buildings); the dust concentration data represents the mass concentration of suspended particulate matter in the air; the operating status refers to whether the spray system is currently on, off, or in a specific power operating mode; the spatial wind speed represents the horizontal flow rate of air in the construction area; and the dust settling time to the ground refers to the theoretical shortest time required for dust of a specific size to fall from its current suspension height to the ground surface under the action of gravity.

[0034] Specifically, the multi-parameter linkage dust and noise control integrated system for residential construction (hereinafter referred to as the system) synchronously collects multi-dimensional environmental parameters through a distributed Internet of Things sensor network. When obtaining the dust settling time, the system performs theoretical calculations based on Stokes' law, extracts the equivalent diameter of the dominant particles in the current dust concentration data, and calculates the terminal settling velocity of the particles by combining aerodynamic viscosity and particle density. Then, it uses the average suspension height of the current dust cloud divided by the terminal settling velocity and introduces a turbulent diffusion correction coefficient based on the current spatial wind speed to finally calculate the dust settling time.

[0035] In some embodiments, multidimensional environmental and equipment status data can be acquired in various ways: Optionally, it can be achieved by deploying fixed monitoring base stations, specifically including: installing high-precision sound level meters and laser dust meters at the bottom of the construction surface and the boundary of the residential area, respectively; converting the collected analog signals into digital signals and packaging them; sending the data packets with timestamps to the central control server for parsing and storage. Optionally, it can be achieved through collaborative inspection by drones and mobile robots, specifically including: planning the hovering noise measurement flight path of the drone at the boundary of the high-rise residential area and the patrol path of the ground robot on the construction surface; using the onboard acoustic probes and aerosol sensors to perform multi-point dynamic sampling during movement; and pushing the three-dimensional environmental data stream with spatial coordinates to the cloud platform in real time via a 5G network. It is understood that other methods can also be used to achieve comprehensive data acquisition, which are not limited here.

[0036] S102. When the spraying equipment is in continuous operation and the dust concentration is decreasing, and the ratio of the change in sound pressure level of the second noise data to that of the first noise data exceeds the preset critical coefficient of the sound duct, the duty cycle of the pulse jet is calculated based on the spatial wind speed and the dust settling boundary time.

[0037] Among them, continuous operation mode refers to the working mode in which the water pump and nozzle output water mist without interruption; sound pressure level change indicates the fluctuation range of noise decibel value within the same time window; preset acoustic duct critical coefficient refers to the empirical threshold derived from historical high humidity environment acoustic experimental data and used to determine the abnormal acoustic impedance caused by air humidity saturation; pulse jet duty cycle is used to indicate the ratio of spray opening time to total cycle time within a complete spray control cycle.

[0038] Specifically, the system compares the incremental relationship of noise data from two locations in real time. When it finds that the noise at the bottom level is stable but the noise at the top level is abnormally amplified (the ratio exceeds the limit), it determines that the acoustic duct effect has formed. In order to find a balance between destroying the acoustic duct (requiring the spray to stop) and maintaining dust settling (requiring spraying), the system introduces spatial wind speed as a medium diffusion variable and uses a dynamic time allocation algorithm for calculation. The system uses the dust settling threshold time as the benchmark upper limit of the pulse period and uses spatial wind speed to calculate the natural dissipation rate of water mist in the air. By establishing a joint differential equation for water mist concentration decay and dust rebound, the system solves for the optimal time node that allows the previous wave of water mist to dissipate just in time to block the continuous transmission of sound waves, while also spraying the next wave of water mist before the dust is raised again. Thus, the duty cycle of the pulse jet is calculated.

[0039] In some embodiments, the pulse jet duty cycle can be calculated in several ways: Optionally, it can be implemented through the rule engine of an edge computing gateway, specifically including: extracting the wind speed and settling time values ​​input from the sensor; substituting the values ​​into a linear interpolation formula pre-programmed into the local microcontroller for calculation; outputting the duty cycle control command and caching it to the distribution queue. Optionally, it can be implemented through a cloud-deployed fuzzy logic controller, specifically including: fuzzifying the spatial wind speed and dust settling boundary time as input variables and mapping them to fuzzy sets; performing logical deduction based on the fuzzy inference rule matrix in the expert experience base; using the centroid method to defuzzify the inference result and outputting the duty cycle percentage value. It is understood that other methods can also be used to dynamically calculate the duty cycle, which are not limited here.

[0040] In a specific implementation scenario, the joint differential equation for water mist concentration decay and dust rebound can be solved for the duty cycle (D) using the following simplified empirical formula: In the formula, T settle Here, v is the settling time of the dust particles; v is the current spatial wind speed; v0 is the reference convection constant to prevent the denominator from being zero; and b is the system's preset concentration decay coefficient. Using this formula, the system can output the duty cycle value, thus directly converting wind speed and settling time into executable device instructions at the code level.

[0041] In some embodiments, when a sudden lateral gust in a narrow space causes the pulsed water mist to be blown towards a residential area before settling and forming a sound-carrying wind tunnel, a dynamic anti-wind deflection compensation step can be performed. The system acquires the three-dimensional vector data of the current spatial wind speed, calculates the lateral drift trajectory and sound-carrying offset of the water mist medium, calculates the backwind compensation deflection angle of the spraying equipment based on the sound-carrying offset, and drives the two-dimensional gimbal of the spraying equipment to deflect in the opposite direction according to the backwind compensation deflection angle. Specifically, the system uses a particle tracking model in fluid dynamics to vector synthesize the gust vector and the initial jet kinetic energy of the water mist to predict the actual landing point of the water mist. By controlling the stepper motor to adjust the pitch and horizontal angle of the spray nozzle, the sprayed water mist falls back directly above the construction surface under the blowing of the gust, thereby cutting off the physical path of noise transmission laterally to the residential area and further improving the noise reduction compliance rate under complex weather conditions.

[0042] S103. Extract the peak frequency from the first noise data, and determine the target water mist particle size that matches the peak frequency according to the preset mapping relationship between noise frequency and water mist particle size. Adjust the output pressure of the spraying device to the target pressure, wherein the average droplet size corresponding to the target pressure is the target water mist particle size.

[0043] Among them, the peak dominant frequency refers to the frequency component with the most concentrated energy and the highest sound pressure level in the noise spectrum; the preset mapping relationship between noise frequency and water mist particle size is an acoustic matching database derived and established by those skilled in the art based on the theory of viscous dissipation and thermal dissipation of sound waves in gas-liquid two-phase flow; the target water mist particle size represents the diameter of micro-water droplets that can produce the maximum absorption and attenuation effect on sound waves of a specific frequency; the target pressure refers to the fluid pressure that the water pump needs to output to atomize the target particle size through a specific nozzle.

[0044] Specifically, the system performs a Fast Fourier Transform (FFT) on the first noise data, converting the time-domain signal into a frequency-domain signal and extracting the peak frequency with the highest energy. Based on acoustic attenuation theory, when there is a specific ratio between the perimeter of the water mist particle size and the wavelength of the sound wave, the micro-droplet vibration and frictional dissipation caused by the sound wave penetrating the water mist is maximized. After the system queries the mapping relationship library to lock the target water mist particle size, it calls the atomization equation in fluid mechanics (such as the empirical formula for the average particle size of Sotter), substitutes the target water mist particle size, nozzle orifice diameter, and fluid surface tension as known parameters into the equation, and solves in reverse to obtain the required injection pressure value. Subsequently, the system generates an analog control signal, which changes the motor speed of the high-pressure water pump through a frequency converter, thereby accurately adjusting the water pressure in the pipeline network to the calculated target pressure.

[0045] In some embodiments, the target pressure can be adjusted in several ways: Optionally, it can be achieved through a lookup table method and PID closed-loop control, specifically including: the main control chip looks up the corresponding preset value of the target pressure in its built-in memory based on the peak main frequency; using this preset value as the target setpoint, reading the real-time feedback value of the pipeline pressure sensor; using the PID algorithm to calculate the deviation and outputting the control voltage to the water pump frequency converter until the pipeline pressure stabilizes at the target value. Optionally, it can be achieved through neural network prediction and adaptive valve control, specifically including: inputting the real-time noise spectrum vector into a pre-trained lightweight neural network model, directly outputting the optimal combination of water pump speed and valve opening; issuing commands to synchronously drive the variable frequency water pump and the electric regulating valve; evaluating the actual spray particle size distribution through high-frequency sampling, and dynamically fine-tuning the valve opening to correct the error. It is understood that other methods can also be used to achieve the matching adjustment of particle size and pressure, which are not limited here.

[0046] In some specific embodiments, according to the acoustic viscous absorption boundary layer theory, sound dissipation is maximized when there is a specific inverse relationship between the droplet perimeter and the sound wave frequency. The mapping calculation formula is as follows: In the formula, d target Target water mist particle size; f peak The peak frequency of the first extracted noise data is denoted as C; C is the acoustic-liquid dissipation constant. The system can determine the required target particle size by looking up a table or calculating using the above formula, and then deduce the required pump pressure in reverse.

[0047] S104. Control the spraying equipment to spray according to the duty cycle and target pressure.

[0048] Among them, control refers to the behavior of the system's main control unit sending electrical signals to the lower-level actuators to change the physical state; jetting is used to describe the physical process of high-pressure water being atomized through a special nozzle and released into the air.

[0049] Specifically, the system converts the calculated duty cycle into a logic level sequence of pulse width modulation (PWM) signals, and simultaneously converts the target pressure into an analog input signal. The system synchronously sends these two signals to the spray control cabinet. The solid-state relay in the control cabinet controls the rapid opening and closing of the solenoid main valve according to the high and low levels of the PWM signals, realizing intermittent pulse spraying. At the same time, the frequency converter maintains the water pump outputting a constant target pressure at the moment the valve opens according to the analog input signal, ensuring that the water mist sprayed by each pulse has the sound-absorbing particle size and the expected spatial distribution, thereby forming a dynamic water mist barrier in the physical space.

[0050] In some embodiments, precise control of the spraying equipment can be achieved in several ways: Optionally, centralized control via a programmable logic controller (PLC) is used, specifically including: the PLC receiving duty cycle and pressure parameters from a host computer; the PLC's internal timer generating pulse control words for the corresponding period, and combining them with the pressure parameters to generate DA conversion instructions; the PLC's digital output module driving the solenoid valve, and the analog output module controlling the water pump frequency converter. Optionally, distributed control via a fieldbus is used, specifically including: the main controller broadcasting data frames containing duty cycle and pressure values ​​to the intelligent drivers of each spraying node via a CAN bus; each node driver parsing the data frames and generating drive waveforms locally; each node synchronously starting its internal IGBT module to drive the water pump and valves to coordinate their actions according to set parameters. It is understood that other methods can also be used to execute the spraying action, which are not limited here.

[0051] In a specific implementation scenario, the collision aggregation probability (P) is calculated using an aerosol dynamics model. agg The specific calculation model is derived based on the simplified Smoluchowski condensation equation, and its discretized calculation formula is as follows: In the formula, RH represents the real-time relative humidity; critical The critical humidity level that triggers aggregation; D is the aforementioned pulse jet duty cycle; L is the distance between the two buildings; K c is the spatial aggregation constant.

[0052] Based on this, the specific formula for calculating the particle size expansion coefficient (q) is as follows: In the formula, t suspenddenoted as , where is the droplet suspension time; and e is the environmental expansion gain ratio. Using the specific formula described above, the system can calculate the volume increase of the droplets due to aggregation before reaching the sound source height.

[0053] In other embodiments, when the construction area is narrow and the air humidity is high, the noise reduction efficiency can be improved by pre-compensating for the droplet aggregation effect and using jet collision to offset the horizontal kinetic energy, ensuring that the sound-absorbing droplets have a particle size distribution and remain suspended when they reach the height of the sound source.

[0054] Specifically, the system first obtains the distance between the buildings on both sides of the construction area, and, combined with the current relative humidity and the duty cycle of the pulse jet, calculates the probability of droplet collision and aggregation in the narrow space using an aerosol dynamics model. Because in a narrow space, the high-density droplet swarm generated by the pulse jet is hindered by the building walls and cannot diffuse quickly, it is prone to collision and merging in a high-humidity environment. When this probability exceeds a preset aggregation threshold (this threshold is an empirical threshold pre-set by those skilled in the art based on statistical data of performance degradation of droplets of different sizes in acoustic attenuation experiments), it is determined that there is a risk of particle size failure. Subsequently, the system obtains the physical height of the sound source and calculates the suspension time required to rise to that height based on the initial jet velocity of the droplets and air resistance. Using this suspension time and the collision and aggregation probability, the system calculates the particle size expansion coefficient caused by droplet aggregation during the ascent. To ensure that the droplets reach the target particle size precisely when they reach the height of the sound source, the system executes reverse pre-compensation logic, dividing the target water mist particle size by the expansion coefficient to calculate a smaller pre-compensation initial particle size, and accordingly increases the spray pressure to the target overpressure value.

[0055] However, increasing the target overpressure value increases the initial horizontal kinetic energy of the droplets, leading to an increase in range. The system calculates the initial horizontal range corresponding to the target overpressure value and determines whether it exceeds a preset proportional threshold for the distance between the two buildings (this threshold is a safety proportional coefficient preset based on fluid dynamics simulation to avoid excessive droplet impact and condensation on the wall). If it exceeds this threshold, the system calculates the jet collision angle that can cancel out the horizontal kinetic energy and selects two sets of nozzles with opposite spray directions. Under the premise of maintaining the target overpressure value, the two sets of nozzles are controlled to spray crosswise. Through the violent collision of the two high-pressure jets in the air, the horizontal momentum is canceled out by the principle of conservation of kinetic energy, converting kinetic energy into energy for further atomization.

[0056] The above technical steps solve the sound absorption frequency mismatch caused by droplet aggregation and enlargement in high-humidity and narrow spaces through pre-compensation algorithms. At the same time, the jet collision technology solves the problem of high-pressure spray easily hitting the wall and failing, ensuring the accurate residence of the sound-absorbing medium in the target space and the compliance of particle size, thereby improving the environmental compliance rate of construction in complex and narrow working conditions.

[0057] S105. Obtain the vertical temperature gradient data and relative humidity data of the current construction area, and calculate the sound wave refraction offset angle of the current air medium based on the vertical temperature gradient data and relative humidity data.

[0058] Among them, the vertical temperature gradient data refers to the rate of change of air temperature measured at different altitudes in the construction area; the relative humidity data represents the percentage of water vapor pressure in the air to saturated water vapor pressure at the same temperature; and the sound wave refraction offset angle refers to the bending angle by which the propagation path deviates from the straight propagation direction when the sound wave propagates in an air medium with uneven density.

[0059] Specifically, the system acquires temperature and humidity data at different altitudes using meteorological masts or lidar. Based on acoustic principles, the speed of sound is a function of air temperature and humidity. The system uses empirical formulas for the speed of sound (such as the Laplace formula for the speed of sound that takes into account the partial pressure of water vapor) to calculate the actual speed of sound at different altitudes layer by layer, constructing a vertical sound speed profile. Subsequently, the system applies Snell's law of acoustics to calculate the radius of curvature of the sound wave ray based on the ratio of the speed of sound between adjacent air layers. Finally, by performing calculus path integration on the propagation path of the sound wave from the sound source to the boundary of the residential area, the system calculates the overall upward or downward sound wave refraction angle of the sound wave ray relative to the horizontal line of sight.

[0060] In some embodiments, the refraction offset angle of sound waves can be calculated in several ways: Optionally, it can be achieved through a multi-layer meteorological sensor array and a layered refraction model, specifically including: reading temperature and humidity sensor data installed at different elevations of a tower crane; dividing the space into multiple uniform horizontal atmospheric layers and calculating the average sound velocity of each layer; using a ray tracing algorithm to calculate the incident angle and refraction angle of the sound wave layer by layer, and accumulating them to obtain the total refraction offset angle. Optionally, it can be achieved through an acoustic Doppler radar detection and inversion algorithm, specifically including: using acoustic radar to transmit detection sound waves into the upper atmosphere and receiving echo signals; analyzing the frequency shift and phase delay of the echo, and inverting the vertical distribution profile of temperature and wind speed in the upper atmosphere; substituting the profile data into the parabolic sound wave propagation equation for numerical solution, and extracting the refraction offset angle of the main lobe of the sound wave. It is understood that other methods can also be used to obtain the refraction angle, which are not limited here.

[0061] S106. Calculate the height of the sound shadow zone caused by the failure of sound wave refraction based on the sound wave refraction offset angle and the pre-acquired spatial coordinates of the residential area window.

[0062] Among them, the pre-acquired spatial coordinates of the residential area windows are the three-dimensional spatial location information of the protected sensitive points imported by the system through three-dimensional laser scanning or BIM model during project initialization; the sound shadow zone height refers to the vertical height difference of the area that was originally within the soundproof enclosure protection range (sound shadow zone), but due to the upward refraction and bending of sound waves, the sound waves cross the top of the enclosure and are re-covered.

[0063] Specifically, the system establishes a three-dimensional Cartesian coordinate system with the sound source as the origin; the system substitutes the coordinates of the sound source, the top coordinates of the fence, and the spatial coordinates of the windows in the residential area into the geometric acoustic model; under ideal conditions without refraction, the sound wave propagates in a straight line, and the system calculates the theoretical shadow boundary of the straight ray blocked by the fence; after introducing the sound wave refraction offset angle, the system corrects the straight ray into an upwardly curved arc trajectory with a specific radius of curvature; the system calculates the actual intersection height of this curved arc with the facade of the residential building after it crosses the top of the fence; the difference between this actual intersection height and the theoretical safety boundary height for straight-line propagation is the height of the sound shadow zone that needs additional compensation due to the failure of the fence protection caused by the refraction effect.

[0064] In some embodiments, the height of the failed sound shadow zone can be calculated in several ways: Optionally, it can be achieved through two-dimensional geometric projection and trigonometric function analysis, specifically including: projecting three-dimensional coordinates onto a two-dimensional vertical cross-section formed by the sound source and the window; fitting the sound wave trajectory with a refraction offset angle using the circular arc equation; calculating the height difference of the intersection point relative to the original straight line shadow boundary by solving the intersection point of the circular arc equation and the vertical line equation of the building facade, and using trigonometric functions. Optionally, it can be achieved through a three-dimensional acoustic ray tracing simulation engine, specifically including: constructing a solid mesh model of the sound source, fence, and residential building in a virtual three-dimensional space; assigning the spatial medium a physical property with a refractive index gradient, emitting a large number of virtual acoustic rays; statistically analyzing the ray trajectories that hit the window mesh of the residential area, extracting the lowest ray height that crosses the fence, and calculating the vertical drop between the ray and the current height of the fence as the height of the sound shadow zone. It is understood that other methods can also be used to quantitatively calculate the failure height, which are not limited here.

[0065] In some embodiments, where the construction surface is made of a rigid reflective material (such as newly poured concrete hardened pavement), causing strong reflection of sound waves on the ground, and the reflected and refracted sound waves superimpose to form multipath obstacle crossings, a surface reflection acoustic suppression step can also be performed. The system acquires the acoustic reflectivity parameters of the construction surface and, combined with the sound wave refraction offset angle, calculates the secondary sound wave trajectory that crosses the enclosure after reflection from the surface. Based on the incident angle of the secondary sound wave trajectory, the required deployment angle of the sound-absorbing skirt at the bottom of the enclosure is calculated. The flexible sound-absorbing skirt at the bottom of the liftable soundproof enclosure is controlled to extend towards the construction surface. The system expands to the innermost angle; specifically, it uses the mirror sound source method, treating the ground as an acoustic mirror, to calculate the position and emission angle of the virtual sound source. Through ray tracing, it identifies the sound energy that first hits the ground, then bounces back and crosses the fence along the refraction arc. The system controls an electric push rod to open the flexible sound-absorbing skirt at the bottom of the fence to a specific angle, making the propagation path perpendicular to these secondary reflected sound waves. The porous sound-absorbing material inside the skirt converts the sound energy reflected from the ground into heat energy, thereby preventing sound waves from crossing the fence through ground reflection, superposition, and refraction, further improving the noise reduction compliance rate.

[0066] S107. Control the height of the adjustable soundproof enclosure to increase the height of the sound shadow zone based on the current height.

[0067] Among them, the liftable soundproof fence refers to a physical sound barrier installed at the construction boundary, which is mechanically driven and dynamically adjustable in height; the current height indicates the actual physical elevation of the fence before this action is performed; rising refers to the mechanical action of driving the movable panel of the fence to move upward in the vertical direction.

[0068] Specifically, the system converts the calculated height of the sound shadow zone into displacement control commands for the mechanical actuators. Before execution, the system performs a safety redundancy check, reads on-site anemometer data to assess the wind load after the fence is raised, and ensures that the total height after the rise does not exceed the overturning safety threshold of the mechanical structure. After the check is passed, the system sends a position operation command containing the target displacement (i.e., the height of the sound shadow zone) to the servo drive controller of the fence. The servo motor starts and smoothly lifts the movable sound insulation panel of the fence upward through a gear rack or hydraulic push rod mechanism until the feedback value of the displacement sensor reaches the set compensation height. This increases the physical height to counteract the diffraction effect caused by sound wave refraction and reintegrates the windows of the residential area into the effective sound shadow protection zone.

[0069] In some embodiments, the raising control of the soundproof fence can be achieved in several ways: Optionally, it can be achieved through a hydraulic proportional servo system, specifically including: the main control PLC calculates the target stroke of the hydraulic cylinder based on the height of the sound shadow zone; outputs a continuously changing voltage signal to the hydraulic proportional valve to control the hydraulic oil flow rate and direction; the hydraulic cylinder pushes the fence upward, while the rope displacement sensor provides real-time feedback of the position signal to the PLC to form a closed-loop control, and the hydraulic circuit is locked after reaching the target height. It is understood that other methods can also be used to achieve the physical raising and lowering of the fence, which are not limited here.

[0070] In some embodiments, when a semi-enclosed U-shaped cavity is formed in the construction area and acoustic resonance is easily triggered, the cavity resonance gain can be eliminated and the abnormal amplification of low-frequency noise can be suppressed by non-resonant fine-tuning of the fence height based on resonance avoidance.

[0071] Specifically, the system first obtains the distance between the buildings on both sides of the construction area, and combines this with the real-time sound velocity under the current relative humidity and the current height of the adjustable soundproof fence, using standing wave theory to calculate the inherent resonant frequency of the U-shaped semi-enclosed cavity formed in the current construction area. This is because in the narrow, deep space of the building, the side walls and the towering fence together constitute an acoustic resonant cavity. When the geometric dimensions of the space are in a specific proportional relationship with the wavelength of the construction noise, sound energy will be continuously reflected and superimposed within the cavity, forming resonance. The system then determines whether the peak frequency of the first noise data falls within the preset resonant bandwidth (this bandwidth is a resonant sensitive frequency range derived by those skilled in the art based on the sound absorption coefficient of the building wall material and the cavity quality factor Q). If the system determines that the peak frequency coincides with the resonant frequency, it will calculate the non-resonant correction height to avoid the resonant amplification effect. Specifically, the system changes the vertical boundary conditions of the cavity (i.e., fine-tunes the fence height) to shift the inherent frequency of the cavity, thereby achieving detuning control. The deviation between the non-resonant correction height and the original sound shadow zone height is strictly limited to a preset fine-tuning range (this range is a safe displacement range preset based on the positioning accuracy of the mechanical lifting mechanism and the minimum redundancy of the sound shadow zone coverage), to ensure that the sound shadow zone does not fail due to a drop in height while eliminating resonance.

[0072] The above steps dynamically identify and break the acoustic resonance conditions of the construction cavity, causing the low-frequency sound energy that was originally amplified due to resonance to be attenuated due to frequency mismatch, thus avoiding abnormal gain of noise at specific frequencies. This improves the environmental compliance rate of construction under complex geometric conditions without adding additional sound-absorbing materials.

[0073] In the above embodiments, by dynamically controlling the spray pulse duty cycle and droplet size, the acoustic conduit effect formed in high humidity environments is blocked, avoiding secondary gain in noise propagation caused by dust suppression operations. Simultaneously, by combining the sound wave refraction law caused by temperature and humidity gradients, the protective height of the soundproof enclosure is compensated in real time, eliminating noise leakage caused by the failure of the sound shadow zone. This multi-parameter linkage mechanism achieves the coupling and intervention of dust suppression and noise reduction at the physical level, ensuring the synergistic optimization of various environmental protection indicators in complex construction environments, ultimately improving the environmental compliance rate of construction sites.

[0074] In some other embodiments of this application, when sound waves reach the top of the enclosure, strong edge diffraction may occur due to a sudden change in internal and external acoustic impedance, leading to noise leakage. The multi-parameter linkage dust and noise reduction integrated method for residential construction provided in this application can create an acoustically soft edge by constructing an air gradient layer with decreasing humidity at the top, smoothing the impedance transition to suppress diffraction.

[0075] like Figure 2 The diagram shown is another flowchart illustrating the integrated dust and noise control method for multi-parameter linkage during residential construction provided in this application, including the following steps: S201. Obtain the first noise data at the bottom of the construction surface, the second noise data at the boundary of the high-rise residential area, the dust concentration data, and the operating status of the spraying equipment, and obtain the current spatial wind speed and the time for dust to settle to the boundary.

[0076] S202. When the spraying equipment is in continuous operation and the dust concentration is decreasing, and the ratio of the change in sound pressure level of the second noise data to that of the first noise data exceeds the preset critical coefficient of the sound duct, the duty cycle of the pulse jet is calculated based on the spatial wind speed and the dust settling boundary time.

[0077] S203. Extract the peak frequency from the first noise data, and determine the target water mist particle size that matches the peak frequency according to the preset mapping relationship between noise frequency and water mist particle size. Adjust the output pressure of the spraying equipment to the target pressure, wherein the average droplet size corresponding to the target pressure is the target water mist particle size.

[0078] S204. Control the spraying equipment to spray according to the duty cycle and target pressure.

[0079] S205. Obtain the vertical temperature gradient data and relative humidity data of the current construction area, and calculate the sound wave refraction offset angle of the current air medium based on the vertical temperature gradient data and relative humidity data.

[0080] Steps S201-S205 and Figure 1 Steps S101-S105 in the illustrated embodiment are similar and can be found in the descriptions of steps S101-S105, which will not be repeated here.

[0081] S206. Obtain the first local humidity data of the inner side of the top edge of the liftable soundproof enclosure and the second local humidity data of the outer side of the top edge.

[0082] The first local humidity data refers to the real-time relative humidity percentage collected by sensors deployed at the top edge of the fence on the side closest to the construction source; the second local humidity data refers to the humidity values ​​collected by sensors deployed at symmetrical positions on the side of the fence away from the construction source (i.e., the residential area side); the top edge is used to indicate the uppermost physical boundary of the fence's movable panel.

[0083] Specifically, the system uses a differential humidity sensor array mounted on a support at the top of the enclosure for synchronous sampling. To ensure the real-time performance and accuracy of the data, the system employs a high-frequency sampling and filtering algorithm to eliminate instantaneous humidity fluctuations caused by local turbulence and obtain a stable distribution of internal and external humidity fields.

[0084] In some embodiments, local humidity data can be acquired in several ways: Optionally, it can be achieved using a contact capacitive humidity sensor, specifically including: embedding waterproof and breathable capacitive moisture-sensing elements on both the inner and outer sides of the top of the enclosure; converting capacitance changes into voltage signals using a signal acquisition circuit; and inputting the voltage signals into the main control chip via an analog-to-digital converter (ADC). Optionally, it can be achieved using non-contact infrared spectroscopy humidity detection, specifically including: emitting an infrared beam of a specific wavelength at the top of the enclosure; detecting the absorption rate of infrared energy by water molecules using a receiver; and retrieving the average humidity data along the absorption spectrum inversion path. It is understood that other methods can also be used to acquire humidity data, and this is not limited here.

[0085] S207. Calculate the acoustic impedance abrupt change rate at the top edge based on the difference between the first local humidity data and the second local humidity data.

[0086] Among them, the acoustic impedance change rate refers to the degree of drastic change in the characteristic impedance of a medium when a sound wave enters a low-humidity medium from a high-humidity medium; acoustic impedance represents the ability of a medium to impede the transmission of sound waves, and is determined by the product of the medium density and the speed of sound.

[0087] Specifically, the system first calculates the real-time air densities a1 and a2, and the real-time sound velocities c1 and c2 on both sides of the enclosure using the Cramer formula, based on the first and second local humidity data and the current ambient temperature. Then, it calculates the characteristic acoustic impedances Z1 = a1c1 and Z2 = a2c2 on both sides. Finally, it calculates the acoustic impedance abrupt change rate A using the formula A = |Z1 - Z2| / Z1. A larger abrupt change rate indicates more severe wavefront distortion at the edges, resulting in stronger diffraction energy entering the residential area.

[0088] In some embodiments, the acoustic impedance abrupt change rate can be calculated in several ways: Optionally, it can be achieved through a preset mapping table lookup, specifically including: inputting the humidity difference as an index into an acoustic impedance lookup table pre-stored in memory; extracting the corresponding impedance change coefficient; and normalizing it according to the current reference impedance to obtain the abrupt change rate. Optionally, it can be achieved through real-time calculation using an analytical model, specifically including: calling the built-in aerodynamic function library to calculate the real-time sound velocity and density; performing floating-point operations to obtain the absolute values ​​of the impedances on both sides; and performing a difference comparison calculation to output the abrupt change rate. It is understood that other methods can also be used to calculate the abrupt change rate, which are not limited here.

[0089] S208. Determine the vertical width of the air humidity gradient band based on the acoustic impedance abrupt change rate.

[0090] Among them, the air humidity gradient zone refers to the transition area with continuous humidity change that is artificially constructed above the enclosure; the vertical width is used to represent the physical thickness of the transition area in the vertical direction.

[0091] Specifically, based on wave acoustics theory, in order to suppress diffraction, the thickness of the transition layer should be positively correlated with the wavelength of the sound wave and the degree of impedance jump. The system extracts the dominant wavelength m from the first noise data, combines it with the acoustic impedance jump rate A, and uses the formula H=k·m·A to calculate the vertical width H, where k is a preset correction coefficient (this correction coefficient is an empirical constant derived by those skilled in the art based on the reduction effect of different gradient thicknesses on the diffraction sound pressure level in sound field simulation experiments), to ensure that the constructed humidity gradient can absorb the phase jump of the sound wave.

[0092] In some embodiments, the vertical width can be determined in several ways: Optionally, it can be achieved through a frequency response matching method, specifically including: analyzing the energy distribution in the noise spectrum; calculating the minimum effective gradient thickness corresponding to the frequency band with the highest energy; and weighting the thickness according to the impedance abrupt change rate. Optionally, it can be achieved through an iterative optimization algorithm, specifically including: setting an initial width value; simulating the diffraction reduction at that width in a virtual sound field model; and finding the optimal width value that minimizes the diffraction sound pressure level using the gradient descent method. It is understood that other methods can also be used to determine the width, which are not limited here.

[0093] S209. Control the opening of the auxiliary mist line installed on the top of the liftable soundproof enclosure, and adjust the spray flow rate of the auxiliary mist line.

[0094] Among them, the auxiliary micro-mist line refers to a special spray pipe installed on the top of the enclosure that can produce micron-sized ultra-fine mist droplets; the spray flow rate indicates the mass of water mist sprayed per unit time and is used to control the humidity density of the gradient layer.

[0095] Specifically, the system sends an opening command to the control valve of the auxiliary micro-mist line and calculates the target flow rate based on the required humidity gradient slope; the system precisely controls the atomization rate of the nozzle by adjusting the frequency of the high-pressure micro-mist pump or the opening of the proportional regulating valve; the flow rate adjustment must ensure that the fog curtain formed above the enclosure can achieve the preset humidity distribution, and will not settle rapidly due to excessive fog droplets, thereby maintaining the stability of the gradient layer.

[0096] In some embodiments, flow regulation and control can be achieved in several ways: Optionally, it can be achieved through closed-loop control of a variable frequency pump, specifically including: calculating the target speed of the pump based on the target flow rate; driving the pump using a frequency converter; and performing PID regulation based on real-time data feedback from a flow meter. Optionally, it can be achieved through switching of multi-stage solenoid valve groups, specifically including: pre-setting multiple groups of nozzles with different orifice diameters; combining and opening different numbers of solenoid valves according to flow requirements; and achieving graded flow regulation by changing the total number of nozzles involved in operation. It is understood that other methods can also be used to achieve flow regulation, which are not limited here.

[0097] S210. While the height of the sound-shadow zone is increased by the height-adjustable soundproof enclosure, an air humidity gradient layer with decreasing humidity from the inside to the outside is constructed above the top edge by auxiliary micro-mist lines.

[0098] Among them, the air humidity gradient layer refers to the medium distribution state in the space where the humidity continuously decreases with height or horizontal distance, and the vertical height is equal to the vertical width; the humidity decreases from the inside to the outside, which means that the air moisture content gradually decreases from the construction area side to the residential area side, so as to achieve a smooth transition of acoustic impedance.

[0099] Specifically, the system drives the hoisting lifting mechanism to move upwards, while simultaneously controlling the auxiliary micro-mist line to spray obliquely upwards at a specific spray angle and initial velocity. By controlling the nozzle arrangement density and spray pressure, a mist-like area with a thickness equal to the aforementioned vertical width is formed above the top of the hoisting. Within this area, due to the natural diffusion and dilution of the water mist, a continuous transition zone is formed from the high humidity on the inside to the ambient humidity on the outside. When sound waves pass through this area, the wavefront no longer experiences a cliff-like impedance jump, but instead undergoes continuous micro-refraction, thereby weakening the edge diffraction effect and making the boundary of the sound shadow zone clearer.

[0100] In some embodiments, the humidity gradient layer can be constructed in several ways: Optionally, it can be achieved through multi-layer differentiated spraying, specifically including: deploying multiple rows of nozzles in the vertical direction; decreasing the spray pressure of each row of nozzles from bottom to top; and using the superposition of fog particles of different densities to form a vertical humidity gradient. Optionally, it can be achieved through induced airflow diffusion, specifically including: using the induced wind force generated by the main spray line to drive the auxiliary micro-mist to diffuse outward; controlling the diffusion rate by adjusting the spray angle of the auxiliary micro-mist; and constructing an acoustic transition layer using the concentration gradient formed by natural diffusion. It is understood that other methods can also be used to construct the gradient layer, which are not limited here.

[0101] In some embodiments, when vertical thermal convection (chimney effect) within a narrow, deep well causes the constructed humidity gradient layer to be blown upwards and deviate from the edge of the enclosure, a dynamic tracking step of the gradient layer position can also be performed. The system obtains the vertical heat flow velocity of the construction area through a thermal imaging sensor and calculates the real-time drift displacement of the humidity gradient layer. Based on the drift displacement, it calculates the spray pitch angle compensation value of the auxiliary micro-mist line and drives the actuator of the auxiliary micro-mist line to deflect downwind or in the opposite direction to compensate for the drift displacement. Specifically, the system uses a fluid dynamics simulation model to predict the lifting force of the hot airflow on the droplets in real time and adjusts the spray angle of the nozzles through a servo motor so that the fog curtain can still cover the acoustic critical path at the top edge of the enclosure under the impact of the hot airflow, preventing acoustic leaks caused by the displacement of the medium layer, thereby ensuring that the environmental compliance rate of the construction site can still be improved even in a complex thermodynamic environment.

[0102] In some embodiments, when the constructed air humidity gradient layer produces an acoustic focusing effect due to uneven medium density distribution, the focusing path of the sound wave can be interrupted by applying high-frequency pressure pulsation to the auxiliary micro-mist line, thereby eliminating local noise hotspots.

[0103] Specifically, the system first acquires the cross-sectional density distribution data of the air humidity gradient layer and uses the acoustic analogy principle to equate this gradient layer to an acoustic gradient refractive index lens model. This is because an air layer with continuously changing humidity is essentially a non-uniform medium whose refractive index varies with spatial location, and sound waves will undergo refraction similar to light passing through a lens when passing through it. Based on the refractive index distribution of this model, n(y) = c0 / c(y) (where c0 is the standard speed of sound and c(y) is the real-time speed of sound varying with height), combined with a pre-imported simplified 3D BIM model of the construction site, the system uses acoustic ray tracing algorithms or functional equations to simulate the propagation trajectory of sound waves, thereby calculating the spatial location of the acoustic focal zone where the construction noise energy is most concentrated after refraction. In practical engineering applications, to reduce computational power consumption, the system can perform ray tracing approximate calculations only for the top three noise frequencies with the highest energy proportions. Subsequently, the system determines whether the focal zone location falls within the preset range of the residential area window (this preset range is a geometric bounding box determined by those skilled in the art based on the 3D spatial coordinates of the window and the safety redundancy margin in the pre-acquired building BIM model). If a focusing risk is detected, the system will calculate a disturbance frequency sufficient to disrupt the continuity of the medium based on the peak frequency of the first noise data. Finally, the system will control the water supply pressure of the auxiliary micro-mist line to pulsate at a high frequency according to this disturbance frequency.

[0104] The above technical steps, by real-time monitoring and actively interrupting the acoustic focusing process of the humidity gradient layer, transform the potentially strong acoustic energy focal zone into a uniformly distributed scattered sound field, avoiding the accumulation of noise energy in front of residents' windows, thereby improving the environmental compliance rate of the construction site in complex geometric spaces.

[0105] S211. Control the height of the adjustable soundproof enclosure to increase the height of the sound shadow zone based on the current height.

[0106] Step S211 and Figure 1 Step S107 in the illustrated embodiment is similar and can be found in the description of step S107, which will not be repeated here.

[0107] In some embodiments, when the sound wave transmission medium moves upward as a whole due to thermal convection caused by mechanical heat sources in a narrow construction space, the vertical displacement deviation caused by thermal buoyancy can be calculated and the height of the enclosure can be dynamically compensated to eliminate thermodynamic interference and ensure full coverage of the high-rise sound shadow zone.

[0108] Specifically, this step is performed in scenarios where heavy-duty machinery operates continuously in narrow alleyways. In such cases, the large amount of heat emitted by the machinery and the enclosed space formed by the buildings on either side create a chimney effect. The system first acquires real-time heating parameters of the machinery's heat source (such as exhaust port temperature, engine thermal power, etc.) using infrared thermal imaging sensors or the machinery's built-in industrial IoT interface, and combines this with pre-measured distances between the buildings on either side. Using a thermodynamic convection model, the system calculates the vertical updraft velocity of the air within the construction area based on the density gradient generated by the temperature difference and the geometric constraints of the narrow space. Subsequently, the system analyzes the force balance of the water mist particles generated by pulse jets in the updraft, calculating the vertical displacement deviation of the water mist medium as it drifts upward with the hot airflow. Because sound waves primarily propagate through humid air, when the medium itself floats upward due to buoyancy caused by heat, the originally calculated sound shadow zone boundary will also rise as a whole. The system linearly superimposes and corrects the initial sound shadow zone height based on this displacement deviation to obtain the compensated target enclosure height, and then drives the lifting mechanism to raise the soundproof enclosure to the target position.

[0109] The above technical steps, by quantifying the lifting effect of thermal buoyancy on the sound wave propagation path, upgrade the static sound shadow zone model to a dynamic thermodynamic compensation model, solving the problem of enclosure protection failure caused by environmental thermal convection, thereby ensuring the environmental compliance rate of the construction site under high temperature and high load operation scenarios.

[0110] In the above embodiment, by dynamically constructing an air gradient layer with continuously decreasing humidity at the top of the soundproof enclosure, the original abrupt change in acoustic impedance on both the inner and outer sides is transformed into a smooth transition. An acoustic soft edge is formed above the rigid boundary, disrupting the physical conditions for strong edge diffraction of sound waves and weakening the diffraction energy of noise over the top of the enclosure. This curbs top noise leakage and deepens the shielding range of the sound shadow zone without continuously increasing the height of the physical enclosure.

[0111] The following describes an exemplary integrated dust and noise control system 300 for residential construction, based on multiple parameters, provided in an embodiment of this application. Figure 3 This is an exemplary hardware structure diagram of the integrated dust and noise control system 300 for multi-parameter linkage in residential construction provided in this application embodiment.

[0112] In some embodiments, the integrated dust and noise control system 300 for residential construction using multi-parameter linkage is a computer device or includes a computer device. The computer device includes a processor, memory, and a network interface connected via a system bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The database stores data. The network interface communicates with other external terminals or servers via a network connection. In some embodiments, the network interface can be a wired network interface; in some embodiments, it can also be a wireless network interface. When the computer program is executed by the processor, it implements the methods described in the embodiments of this application.

[0113] Those skilled in the art will understand that Figure 3 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0114] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0115] As used in the above embodiments, depending on the context, the term "when..." can be interpreted as "if...", "after...", "in response to determining...", or "in response to detecting...". Similarly, depending on the context, the phrase "when determining..." or "if (the stated condition or event) is interpreted as "if determining...", "in response to determining...", "when (the stated condition or event) is detected", or "in response to detecting (the stated condition or event)".

[0116] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state drive), etc.

[0117] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. This program can be stored in a computer-readable storage medium, and when executed, it can include the processes described in the above method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as ROM or random access memory (RAM), magnetic disks, or optical disks.

Claims

1. A multi-parameter linkage method for integrated dust and noise control during residential construction, characterized in that, include: Acquire the first noise data at the bottom of the construction surface, the second noise data at the boundary of the high-rise residential area, the dust concentration data, and the operating status of the spraying equipment; and acquire the current spatial wind speed and the time for dust to settle to the boundary. When the spraying equipment is in continuous operation and the dust concentration is decreasing, and the ratio of the change in sound pressure level of the second noise data to that of the first noise data exceeds the preset critical coefficient of the acoustic duct, the duty cycle of the pulse jet is calculated based on the spatial wind speed and the dust settling boundary time. Extract the peak frequency from the first noise data, and determine the target water mist particle size that matches the peak frequency according to the preset mapping relationship between noise frequency and water mist particle size. Adjust the output pressure of the spraying device to the target pressure, wherein the average droplet size corresponding to the target pressure is the target water mist particle size. The spraying device is controlled to spray according to the duty cycle and the target pressure; Obtain the vertical temperature gradient data and relative humidity data of the current construction area, and calculate the sound wave refraction offset angle of the current air medium based on the vertical temperature gradient data and the relative humidity data; Based on the sound wave refraction offset angle and the pre-acquired spatial coordinates of the residential area window, the height of the sound shadow zone due to sound wave refraction failure is calculated. Control the height of the adjustable soundproof enclosure to increase the height of the sound shadow zone based on the current height.

2. The method according to claim 1, characterized in that, After controlling the spraying device to spray according to the duty cycle and the target pressure, the method further includes: The distance between the buildings on both sides of the construction area is obtained, and the collision and aggregation probability of the droplets is calculated by combining the relative humidity and the duty cycle of the pulse jet. When the collision aggregation probability is greater than the preset aggregation threshold, the physical height of the sound source corresponding to the first noise data is obtained, and the suspension time of the droplets from the spraying device to the physical height of the sound source is calculated. The particle size expansion coefficient of the physical height of the sound source is calculated based on the suspension time and the collision aggregation probability. Divide the target water mist particle size by the particle size expansion coefficient to calculate the pre-compensated initial particle size; Adjust the output pressure of the spraying device to the target overpressure value; the average droplet size corresponding to the target overpressure value is the pre-compensated initial droplet size.

3. The method according to claim 2, characterized in that, Adjusting the output pressure of the spraying device to the target overpressure value specifically includes: Obtain the initial horizontal range corresponding to the target overpressure value. When the initial horizontal range is greater than a preset proportional threshold of the distance between the two buildings, calculate the jet collision angle based on the distance between the two buildings and the physical height of the sound source. Select two sets of nozzles with opposite spray directions in the spraying equipment, and adjust the output pressure of both sets of nozzles to the target overpressure value; The two sets of nozzles are controlled to spray crosswise according to the jet collision angle.

4. The method according to claim 1, characterized in that, The controllable height-adjustable soundproof enclosure raises the height of the sound shadow zone from its current height, specifically including: Acquire first local humidity data of the inner side of the top edge of the liftable soundproof enclosure and second local humidity data of the outer side of the top edge; The acoustic impedance abrupt change rate at the top edge is calculated based on the difference between the first local humidity data and the second local humidity data. The vertical width of the air humidity gradient band is determined based on the acoustic impedance abrupt change rate. Control the opening of the auxiliary micro-mist line installed at the top of the liftable soundproof barrier, and adjust the spray flow rate of the auxiliary micro-mist line; As the height of the sound-shadow zone is raised by the adjustable soundproof enclosure, an air humidity gradient layer with decreasing humidity from the inside to the outside is constructed above the top edge by the auxiliary micro-mist line, wherein the vertical height of the air humidity gradient layer is equal to the vertical width.

5. The method according to claim 4, characterized in that, After constructing an air humidity gradient layer with decreasing humidity from the inside out above the top edge using the auxiliary micro-mist line, the method further includes: Obtain the cross-sectional density distribution data of the air humidity gradient layer, and equate the air humidity gradient layer to an acoustic gradient refractive index lens model; Based on the refractive index distribution of the acoustic gradient refractive index lens model, calculate the acoustic focal zone spatial position of the sound wave corresponding to the first noise data after refraction through the air humidity gradient layer. When the acoustic focal space location falls within a preset range of the residential area window, the disturbance frequency is calculated based on the peak dominant frequency of the first noise data; The water supply pressure of the auxiliary micro-mist line is controlled to pulsate at a high frequency according to the disturbance frequency.

6. The method according to claim 1, characterized in that, After calculating the height of the sound shadow zone due to sound wave refraction failure based on the sound wave refraction offset angle and the pre-acquired spatial coordinates of the residential area window, the method further includes: The real-time heating parameters of the mechanical heat source within the construction area are obtained, and the distance between the buildings on both sides of the construction area is also obtained. Calculate the vertical updraft speed within the construction area based on the real-time heating parameters and the distance between the buildings on both sides. Based on the vertical upward wind speed and the suspension characteristics of the water mist generated by the pulse jet, the vertical displacement deviation of the water mist medium as it drifts upward with the hot airflow is calculated. The height of the sound shadow zone is corrected based on the vertical displacement deviation to obtain the compensated target enclosure height; Control the liftable soundproof fence to rise to the target fence height.

7. The method according to claim 1, characterized in that, After the height of the sound shadow zone is increased from the current height of the adjustable soundproof enclosure, the system further includes: The distance between the buildings on both sides of the construction area is obtained. Based on the distance between the buildings on both sides, the speed of sound under the relative humidity, and the current height of the liftable soundproof fence, the inherent resonant frequency formed in the current construction area is calculated. If the peak frequency of the first noise data is within the preset resonant bandwidth of the inherent resonant frequency, calculate the non-resonant correction height to avoid the resonant amplification effect, wherein the deviation between the non-resonant correction height and the sound shadow zone height is within a preset fine-tuning range; The height of the adjustable soundproof enclosure is finely adjusted to the non-resonant correction height.

8. A multi-parameter linkage dust and noise control integrated system for residential construction, characterized in that, The integrated dust and noise control system for residential construction includes: one or more processors and a memory; the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code includes computer instructions, and the one or more processors call the computer instructions to cause the integrated dust and noise control system for residential construction to perform the method as described in any one of claims 1-7.

9. A computer program product containing instructions, characterized in that, When the computer program product is run on the integrated dust and noise control system for multi-parameter linkage in residential construction, the integrated dust and noise control system for multi-parameter linkage in residential construction performs the method as described in any one of claims 1-7.

10. A computer-readable storage medium comprising instructions, characterized in that, When the instruction is executed on the integrated dust and noise control system for multi-parameter linkage in residential construction, the integrated dust and noise control system for multi-parameter linkage in residential construction performs the method as described in any one of claims 1-7.

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