CN110633499A - Sound barrier parameter determination method and device - Google Patents
Sound barrier parameter determination method and device Download PDFInfo
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- CN110633499A CN110633499A CN201910764889.3A CN201910764889A CN110633499A CN 110633499 A CN110633499 A CN 110633499A CN 201910764889 A CN201910764889 A CN 201910764889A CN 110633499 A CN110633499 A CN 110633499A
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Abstract
The invention provides a method and a device for determining sound barrier parameters, wherein the method for determining the sound barrier parameters comprises the following steps: acquiring noise of a noise source and a sound receiving point; calculating the noise reduction requirement according to the noise of the noise source, the noise of the sound receiving point and the environment where the noise source is located; calculating the surface density of the sound barrier according to the noise reduction requirement; and determining the size of the sound barrier and the distance from the noise source according to the height of the sensitive point and the distance from the noise source. By implementing the method, the density, the height and the position of the sound barrier can be calculated according to different environments and different requirements, the application range is wider, the used materials of the sound barrier are not required to be designed, the design steps are simplified, the design period is shortened, only the materials which accord with the calculated density are used, the selectable range of the materials is wide, the quantitative control of the noise reduction effect is realized, the insufficient or excessive technical investment of the noise reduction technology is avoided, and the economy of the noise reduction engineering is ensured.
Description
Technical Field
The invention relates to the technical field of noise control, in particular to a method and a device for determining sound barrier parameters.
Background
With the construction and development of power grids, high-voltage transmission lines gradually penetrate into urban areas, a plurality of high-voltage and high-capacity transformers are adjacent to residential living areas, and noise generated by equipment operation seriously influences the normal life of residents. Especially for a plurality of old transformer substations in service, transformers in the old transformer substations are arranged outdoors, and due to the lack of shielding of buildings such as main transformer rooms and the like, the transformer substations have a plurality of noise emission passages, slow attenuation and large influence range.
In order to limit the noise transmission of the transformer, ensure that the station boundary noise of the transformer reaches the standard and meet the cooling and heat dissipation requirements of equipment, a sound barrier is generally adopted for noise control. Through engineering application development in the fields of railways, traffic and the like, a method for determining the type selection parameters of the sound barrier is relatively complete, but when the noise reduction design of an outdoor transformer substation is carried out, the civil engineering characteristics of the transformer substation and the noise spectrum characteristics of the transformer need to be comprehensively considered. If the resident building with a higher floor exists in the station boundary position, the height of the sound barrier needs to be strictly designed in order to ensure that the residents on the high floor are prevented from being influenced by noise. At present, most sound barrier parameter determination methods focus on improving sound insulation performance through material improvement, and although noise can be effectively controlled through improving materials of sound barriers, the material improvement process is complex, and the design period is long. Therefore, for the noise reduction requirement of the outdoor substation, a method for determining the modular parameters of the sound barrier, which is efficient and simple and can achieve the noise reduction effect, needs to be provided.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defect of complex design of the sound barrier in the prior art, and to provide a method and an apparatus for determining sound barrier parameters.
The first aspect of the present invention provides a method for determining a sound barrier parameter, including: acquiring noise of a noise source and a sound receiving point; calculating the noise reduction requirement according to the noise of the noise source, the noise of the sound receiving point and the environment where the noise source is located; calculating the surface density of the sound barrier according to the noise reduction requirement; and determining the size of the sound barrier and the distance from the noise source according to the height of the sensitive point and the distance from the noise source.
Optionally, the step of calculating the noise reduction requirement according to the noise of the noise source, the noise of the sound receiving point and the environment where the noise source is located includes: calculating the integral noise reduction requirement according to the noise of the sound receiving point and the noise reduction standard corresponding to the environment where the noise source is located; and/or calculating the noise reduction requirement of the specific frequency according to the noise of the noise source and the noise reduction standard corresponding to the environment where the noise source is located.
Optionally, the step of calculating the areal density of the sound barrier according to the noise reduction requirement includes: and calculating the first surface density of the sound barrier according to the integral noise reduction requirement.
Optionally, the step of calculating the areal density of the sound barrier according to the noise reduction requirement includes: and calculating the second areal density of the sound barrier according to the specific frequency noise reduction requirement.
Optionally, the step of calculating the areal density of the sound barrier according to the noise reduction requirement includes: calculating the first surface density of the sound barrier according to the integral noise reduction requirement; calculating the second surface density of the sound barrier according to the noise reduction requirement of the specific frequency; the greater of the first areal density and the second areal density is taken as the areal density of the sound barrier.
Optionally, the first areal density is calculated by the formula:
Optionally, the second areal density is calculated by the formula: r2＝20lgm2+20lgf-48, wherein R2Representing noise reduction requirement at a particular frequency, m2Representing the second areal density and f representing a specific frequency.
A second aspect of the present invention provides a sound barrier parameter determining apparatus, including: the noise acquisition module is used for acquiring the noise of a noise source and the noise of a sound receiving point; the noise reduction demand calculation module is used for calculating the noise reduction demand according to the noise of the noise source, the noise of the sound receiving point and the environment where the noise source is located; the surface density calculating module is used for calculating the surface density of the sound barrier according to the noise reduction requirement; and the sound barrier design module is used for determining the size of the sound barrier and the distance between the sound barrier and the noise source according to the height of the sensitive point and the distance between the sensitive point and the noise source.
A third aspect of the present invention provides a computer apparatus comprising: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executable by the at least one processor to perform the sound barrier parameter determination method as set forth in the first aspect of the present invention.
A fourth aspect of the present invention provides a computer-readable storage medium storing computer instructions for causing a computer to execute the sound barrier parameter determination method according to the first aspect of the present invention.
The technical scheme of the invention has the following advantages:
1. the method for determining the parameters of the sound barrier calculates the noise reduction requirement according to the noise of a noise source, the noise of a sound receiving point and the environment where the noise source is positioned, calculates the surface density of the sound barrier according to the noise reduction requirement, determines the size of the sound barrier and the distance between the sound barrier and the noise source according to the height of a sensitive point and the distance between the sensitive point and the noise source, and compared with the method for simply optimizing the sound barrier, the method for determining the parameters of the sound barrier calculates the density, the height and the position of the sound barrier according to different environments and different requirements, has wider application range, does not need to design the used materials of the sound barrier, simplifies the design steps, shortens the design period, only needs to use the materials which accord with the calculated density, has wide material selection range, realizes the quantitative control of the noise reduction effect, avoids the insufficient or excessive technical input of the noise reduction technology, the economical efficiency of the noise reduction project is ensured.
2. The method for determining the parameters of the sound barrier determines the surface density of the sound barrier according to the integral noise reduction requirement and/or the specific frequency noise reduction requirement, and the sound barrier material selected by the method can accurately achieve the purpose of noise reduction, so that the noise of a sound receiving point reaches the national standard.
3. According to the sound barrier parameter determining method provided by the invention, the surface density of the sound barrier is calculated according to the noise reduction requirement of specific frequency, and the sound barrier obtained by the method can be used for specifically blocking a main noise source.
4. According to the device for determining the parameters of the sound barrier, the surface density of the sound barrier is calculated by the surface density calculating module according to the noise reduction requirement obtained by the noise reduction requirement calculating module, the size of the sound barrier and the distance between the sound barrier and a noise source are determined by the sound barrier designing module according to the height of the sensitive point and the distance between the sensitive point and the noise source, compared with the simple optimization of the sound barrier, the device can calculate the density, the height and the position of the sound barrier according to different environments and different requirements, the application range is wider, the used materials of the sound barrier are not required to be designed, the design steps are simplified, the design period is shortened, only the materials which accord with the calculated density are needed to be used, and the material selection range is wide.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flowchart (one) of a specific example of a sound barrier parameter determination method in an embodiment of the present invention;
fig. 2 is a flowchart (ii) of a specific example of a sound barrier parameter determination method in an embodiment of the present invention;
fig. 3 is a flowchart (iii) of a specific example of the sound barrier parameter determination method in the embodiment of the present invention;
fig. 4 is a flowchart (iv) of a specific example of the sound barrier parameter determination method in the embodiment of the present invention;
fig. 5 is a flowchart (v) of a specific example of the sound barrier parameter determination method in the embodiment of the present invention;
fig. 6 is a diagram of a main near-field noise 1/3 octave spectrum of a specific example of a method for determining sound barrier parameters in an embodiment of the present invention;
fig. 7 is a diagram of a station boundary noise 1/3 octave spectrum of a specific example of a method for determining a sound barrier parameter according to an embodiment of the present invention;
fig. 8 is a block diagram showing a specific example of the sound barrier parameter determination apparatus according to the embodiment of the present invention;
fig. 9 is a block diagram showing a specific example of a computer device in the embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The embodiment provides a method for determining a sound barrier parameter, where the sound barrier is used to reduce the influence of noise emitted by a substation on the surrounding environment, and as shown in fig. 1, the method includes the following steps:
step S10: and acquiring the noise of the noise source and the sound receiving point. In a particular embodiment, the sound barrier is used to reduce the effect of the noise emitted by the substation on the surrounding environment, since the main source of noise in the substation is the transformer, which represents the transformer; according to the relevant regulations, the requirement for noise is a requirement for noise at the station boundary, i.e. the noise at the station boundary is required to be below the relevant standard, and therefore the sound receiving point represents the station boundary.
When transformer and station boundary noise are obtained, if the transformer substation is an old transformer substation, devices such as a sound level meter with an 1/3 octave analysis module and the like are needed to master the A weighting sound pressure level and the 1/3 octave frequency spectrum of the noise of the transformer and the station boundary; and if the transformer substation is a new transformer substation, calculating the sound pressure level of noise transmitted to the station boundary according to the superposition result of factory detection noise values of the single transformer and a noise transmission attenuation formula.
Step S20: and calculating the noise reduction requirement according to the noise of the noise source, the noise of the sound receiving point and the environment where the noise source is located. In a specific embodiment, the substation may be in different environments, and for different environments, GB12348 specifies different noise standards, so when designing the sound barrier, it is necessary to consider the environment in which the substation is located, determine the corresponding noise reduction requirement, and design a suitable sound barrier.
Step S30: and calculating the surface density of the sound barrier according to the noise reduction requirement. The wall plate is a main structural component of the sound barrier and is also a key part for playing a sound insulation function. The sound insulation properties of a wall panel essentially follow the "law of mass", i.e. the amount of sound insulation of a wall or other building panel is proportional to the logarithm of its surface density (or mass per unit area). For a single-layer homogeneous wall, assuming no consideration of the influence of the boundary, the density of the wall panel can be estimated according to the noise reduction requirement under the irregular incidence condition.
Step S40: and determining the size of the sound barrier and the distance from the noise source according to the height of the sensitive point and the distance from the noise source. The noise reduction is mainly to reduce the influence of noise emitted by the transformer substation on personnel around the transformer substation, and therefore, the sensitive point is mainly a residential building, and in the embodiment, the size of the sound barrier and the distance from the noise source are mainly determined according to the height of the residential building around the transformer substation and the distance from the transformer substation. Because the propagation of sound has certain law, and for the convenience of designing the sound barrier, avoid every time to the design of the height and the position of sound barrier, all carry out one time of complicated operation, constructed the modularization design reference noise value table that the sound barrier laid in this embodiment, can obtain suitable height and the position of laying the sound barrier through consulting this table. Specifically, the design process of the modular design reference noise value table of the sound barrier layout is as follows:
by adopting SoundPlan simulation analysis software, the noise sound pressure level levels in the protection areas with different heights and different distances are analyzed when the heights of the sound barriers are respectively 5m, 10m and 15m, and the distances between the sound barriers and the original point (the minimum safe distance point of the transformer and 2m away from the transformer) are respectively 0, 5m and 10 m. According to the calculation result, when the sound barrier is located at the original point, the noise level is still higher and attenuated with the distance increase in the area above the sound barrier height due to the sound diffraction phenomenon within the range of the sound shadow area below the sound barrier height and beyond the horizontal distance of 5m from the original point, which is basically 45dB (A) or less. When the height of the sound barrier is 5m and the horizontal distance between the sensitive point and the position of the origin point exceeds 30m, the noise level of all the heights is reduced to be below 45dB (A); when the sound barrier height is increased to 10m, 15m, this attenuation distance is reduced to 15m, 5m, respectively. When the height of the sound barrier is fixed, the sound diffraction effect is more serious along with the increase of the distance between the sound barrier and the main transformer, the noise level is gradually increased, and the lowest noise attenuation distance of the noise level at all heights is gradually increased until the noise level is reduced to be below 45dB (A). The final summary yields a table of the modular design reference noise values for the sound barrier layout, as shown in table 1.
TABLE 1
The method for determining parameters of a sound barrier provided by this embodiment calculates noise reduction requirements according to the noise of a noise source, the noise of a sound receiving point and the environment where the noise source is located, calculates the areal density of the sound barrier according to the noise reduction requirements, determines the size of the sound barrier and the distance from the noise source according to the height of a sensitive point and the distance from the noise source, and calculates the density, the height and the position of the sound barrier according to different environments and different requirements, has a wider application range, does not need to design the used materials of the sound barrier, simplifies the design steps, shortens the design period, only needs to use the materials according with the calculated density, has a wide material selection range, realizes the quantitative control of the noise reduction effect, avoids the insufficient or excessive technical investment of noise reduction, the economical efficiency of the noise reduction project is ensured.
In an alternative embodiment, as shown in fig. 2, step S20 specifically includes:
step S21: calculating the overall noise reduction requirement according to the noise of the sound receiving point and the noise reduction standard corresponding to the environment where the noise source is located, namely calculating the overall noise reduction requirement according to the noise of the station boundary and the noise standard specified by GB 12348; and/or
Step S22: according to the noise of the noise source and the noise reduction standard corresponding to the environment where the noise source is located, the noise reduction requirement of the specific frequency is calculated, in a specific embodiment, for a transformer substation, the main noise source of the transformer is a transformer, the main noise of the transformer is caused by magnetostriction of a transformer core, and the noise is mainly distributed on a 100Hz fundamental frequency and a frequency multiplication thereof, so that the frequency point noise is mainly treated, and 100Hz is the specific frequency.
According to the method for determining the parameters of the sound barrier, the surface density of the sound barrier is determined according to the integral noise reduction requirement and/or the specific frequency noise reduction requirement, and the sound barrier material selected by the method can accurately achieve the purpose of noise reduction, so that the noise of a sound receiving point reaches the national standard.
In an alternative embodiment, when only the entire noise reduction requirement is calculated, i.e. only step S21 is performed, as shown in fig. 3, step S30 includes:
step S31: and calculating the first surface density of the sound barrier according to the volume noise reduction requirement, wherein the first surface density is the surface density of the sound barrier, and only the material which meets the first surface density and meets the outdoor long-term service needs is selected as the material of the sound barrier.
In an alternative embodiment, when only the specific frequency noise reduction requirement is calculated, i.e. only step S22 is performed, as shown in fig. 4, step S30 includes:
step S32: and calculating the second surface density of the sound barrier according to the noise reduction requirement of the specific frequency, wherein the second surface density is the surface density of the sound barrier, and only the material which meets the second surface density and meets the outdoor long-term service needs is selected as the material of the sound barrier.
According to the method for determining the parameters of the sound barrier, provided by the embodiment, the areal density of the sound barrier is calculated according to the noise reduction requirement of a specific frequency, and the sound barrier obtained by the method can be used for specifically blocking a main noise source.
In an alternative embodiment, when both the overall noise reduction requirement and the specific frequency noise reduction requirement are calculated, i.e., steps S21 and S22 are performed, as shown in fig. 5, step S30 includes:
step S31: calculating the first surface density of the sound barrier according to the integral noise reduction requirement;
step S32: calculating the second surface density of the sound barrier according to the noise reduction requirement of the specific frequency;
step S33: the larger of the first surface density and the second surface density is used as the surface density of the sound barrier, and the larger is selected as the surface density of the sound barrier, so that the sound insulation quantity of the sound barrier is more guaranteed.
In an alternative embodiment, the first areal density is calculated by the formula:
wherein R is1Represents the overall noise reduction requirement, m1The first areal density is indicated. In the specific calculation, one formula can be selected to calculate the first areal density, and if the calculated areal density does not meet the condition of the formula, the other formula is used to calculate the first areal density.
In an alternative embodiment, the second areal density is calculated by the following equation:
R2＝20lgm2+20lgf-48， (2)
wherein R is2Representing noise reduction requirement at a particular frequency, m2Representing the second areal density and f representing a specific frequency.
In a specific embodiment, in order to show the effectiveness of the sound barrier parameter determination method provided by this embodiment, a sound barrier is designed through this method under different conditions, and the effectiveness of this method is tested through simulation.
Example 1: a certain 220kV transformer substation is a typical urban outdoor transformer substation, 3 main transformers are arranged in the transformer substation, a residential building is arranged on the south side of the transformer substation, the height of the residential building is about 20 meters, and the distance between the factory boundary on the south side and the residential building is only 5 m. In order to avoid the phenomenon of causing noise complaints, the transformer substation needs to be subjected to noise reduction treatment. The design process of the sound barrier is as follows:
firstly, measuring near-field noise and station boundary noise of outdoor substation sound source equipment by using equipment such as a sound level meter with an 1/3 octave analysis module. After the noise sound pressure levels of the 3 main transformers are measured and superposed, the total noise sound pressure level reaches 75.3dB (A), the station boundary noise sound pressure level reaches 66.4dB (A), and the highest sound pressure level in the residential building is 63dB (A). Fig. 6 is a diagram of a main near-field noise 1/3 octave spectrum, and fig. 7 is a diagram of a station boundary noise 1/3 octave spectrum.
According to GB12348, the 220kV outdoor transformer substation is located in a class I sound environment functional area, the sound pressure level of the noise at night of the transformer substation does not exceed 45dB, and therefore the overall noise reduction is 66.4-45-21.5 dB. As can be seen from fig. 6, since the sound pressure level of the transformer near-field noise 100Hz component is 71.5dB, the noise reduction amount of the 100Hz low-frequency noise is 71.5-45 to 26.5 dB.
Calculating the first areal density of not less than 21.2kg/m according to formula (1)2The second areal density is calculated according to the formula (2) to be not less than 53kg/m2Since the second areal density is greater than the first areal density, the second areal density is selected to be 53kg/m2As the final sound barrier areal density, the overall noise reduction was 30.7 dB. In this embodiment, the maximum value of the first areal density and the second areal density is taken as the areal density of the sound barrier, and in other embodiments, only the first areal density or the second areal density may be calculated as the soundThe areal density of the barrier.
According to the investigation result, the distance between the residential building of the south station boundary and the origin of the transformer is 20m, and the height of the residential building is 20 m. In order to avoid the influence of transformer noise on residents, the noise sound pressure level in residential buildings at all heights is ensured to be not higher than 45 dB. It can be known from the lookup table 1 that, at a position 20m away from the sensitive point, in order to ensure that the noise sound pressure level at all heights is lower than 45dB, the height of the sound barrier should be designed to be at least 10m, the sound barrier can be set at any position from the original point of the transformer to the original point 5m away, and in order to ensure that the transformer equipment has sufficient maintenance and inspection space, the position of the sound barrier is generally far away from the transformer, so that the height of the sound barrier is finally determined to be 10m, and the height of the sound barrier is finally determined to be 10m away from the original point of the transformer by 5m, and is set at a position 5m away from.
After the sound barrier design is completed according to the scheme, simulation analysis is adopted, and the finally obtained noise reduction effect is shown in the following table 2:
TABLE 2
As can be seen from the above table, after the sound barrier designed by the method provided in this embodiment is set up, the noise of the station boundary and the floor with the largest sound pressure level in the residential building is reduced below the national standard.
Example 2: a110 kV outdoor transformer substation is planned to be newly built in a certain cell, and 2 main transformers are arranged outside a main control building. The south side of the transformer substation is adjacent to a residential building, and the height of the building is about 20 m. The design process of the sound barrier is as follows:
and measuring near-field noise of the transformer, station boundary noise and noise in a residential building. The result shows that the noise of the transformer is 61.3dB (A), wherein the low-frequency noise of 100Hz is 65dB, the noise of the station boundary is 58.1dB (A), and the highest noise in the residential building is 54dB (A). The transformer substation is located in an I-type acoustic environment functional area, the integral noise reduction amount is 58.1-45-13.1 dB, and the 100Hz noise reduction amount is 65-45-20 dB.
The first areal density and the second areal density were calculated according to the formula (1) and the formula (2), respectively, to be 9.14kg/m2 and 25.11kg/m, respectively2SelectingMaximum value of 25.11kg/m2As the areal density of the acoustic barrier.
Since the residential building is 17m away from the original point of the transformer, the total height is 20m, and the acoustic barrier is finally determined to be 10m by referring to the table 1 in order to ensure that the noise in the protection area is not more than 45dB, and is installed at the original point of the transformer.
After the sound barrier design is completed according to the scheme, simulation analysis is adopted, and finally the obtained noise reduction effect is shown in the following table 3:
TABLE 3
As can be seen from the above table, after the sound barrier designed by the method provided in this embodiment is set up, the noise of the station boundary and the floor with the largest sound pressure level in the residential building is reduced below the national standard.
Example 3: a certain 110kV transformer substation is a typical urban outdoor transformer substation, and 3 main transformers are arranged outside a main control building. The transformer substation is adjacent to a residential building, and the floor height is about 15 m. The design flow of the sound barrier is as follows:
and measuring near-field noise of the transformer, station boundary noise and noise in a residential building by using a sound level meter. The result shows that the noise of the transformer is 65dB (A), wherein the low-frequency noise of 100Hz is 68dB, the noise of a station boundary is 57.4dB (A), and the highest noise in a residential building is 47dB (A). The transformer substation is located in an I-type acoustic environment functional area, the integral noise reduction amount is 57.4-45-12.4 dB, and the 100Hz noise reduction amount is 68-45-23 dB.
The first areal density and the second areal density were calculated according to the formula (1) and the formula (2), respectively, to be 8.52kg/m2And 35.5kg/m2Selecting the maximum value of 35.5kg/m2As the areal density of the acoustic barrier.
Since the residential building is 20m away from the origin of the transformer, the total height is 15m, and the acoustic barrier is finally determined to be 10m in height by referring to the table 1 in order to ensure that the noise in the protection area does not exceed 45dB, and is installed at a position 5m away from the origin of the transformer.
After the sound barrier design is completed according to the scheme, simulation analysis is adopted, and the finally obtained noise reduction effect is shown in the following table 4:
TABLE 4
As can be seen from the above table, after the sound barrier designed by the method provided in this embodiment is set up, the noise of the station boundary and the floor with the largest sound pressure level in the residential building is reduced below the national standard.
Example 2
The present embodiment provides a sound barrier parameter determining apparatus, as shown in fig. 8, including:
a noise acquisition module 10, configured to acquire noise of the noise source and the sound receiving point, for a detailed description, see the description of step S10 in embodiment 1 above;
a noise reduction demand calculation module 20, configured to calculate a noise reduction demand according to the noise of the noise source, the noise of the sound receiving point, and the environment where the noise source is located, which is described in detail in the above embodiment 1 for the description of step S20;
an areal density calculating module 30, configured to calculate an areal density of the sound barrier according to the noise reduction requirement, which is described in detail in the above embodiment 1 for the step S30;
the sound barrier design module 40 is configured to determine the size of the sound barrier and the distance from the noise source according to the height of the sensitive point and the distance from the noise source, which is described in detail in the above embodiment 1 for the description of step S40.
In the sound barrier parameter determination apparatus provided in this embodiment, the areal density of the sound barrier is calculated by the areal density calculation module 30 according to the noise reduction requirement obtained by the noise reduction requirement calculation module 20, and the size of the sound barrier and the distance from the noise source are determined by the sound barrier design module 40 according to the height of the sensitive point and the distance from the noise source, compared with the simple optimization of the sound barrier, the apparatus can calculate the density, the height and the position of the sound barrier according to different environments and different requirements, and has a wider application range, and the use material of the sound barrier does not need to be designed, so that the design steps are simplified, the design period is shortened, only the material meeting the calculated density needs to be used, and the material selection range is wide.
Example 3
The present embodiment provides a computer device, as shown in fig. 9, the computer device mainly includes one or more processors 51 and a memory 52, and one processor 51 is taken as an example in fig. 5.
The computer device may further include: an input device 53 and an output device 54.
The processor 51, the memory 52, the input device 53 and the output device 54 may be connected by a bus or other means, and fig. 5 illustrates the connection by a bus as an example.
The processor 51 may be a Central Processing Unit (CPU). The Processor 51 may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, or combinations thereof. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The memory 52 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created from use of the sound barrier parameter determination apparatus, and the like. Further, the memory 52 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory 52 optionally comprises a memory remotely located from the processor 51, and these remote memories may be connected to the sound barrier parameter determination apparatus via a network. The input device 53 may receive a calculation request (or other numeric or character information) input by a user and generate a key signal input associated with the sound barrier parameter determination device. The output device 54 may include a display device such as a display screen for outputting the calculation result.
Example 4
The present embodiment provides a computer-readable storage medium, which stores computer instructions, and the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions can execute the sound barrier parameter determination method in any of the above method embodiments. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a flash Memory (FlashMemory), a Hard Disk (Hard Disk Drive, abbreviated as HDD), a Solid State Drive (SSD), or the like; the storage medium may also comprise a combination of memories of the kind described above.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A method for determining sound barrier parameters is characterized by comprising the following steps:
acquiring noise of a noise source and a sound receiving point;
calculating a noise reduction requirement according to the noise of the noise source, the noise of the sound receiving point and the environment where the noise source is located;
calculating the surface density of the sound barrier according to the noise reduction requirement;
and determining the size of the sound barrier and the distance from the noise source according to the height of the sensitive point and the distance from the noise source.
2. The method for determining the parameters of the sound barrier according to claim 1, wherein the step of calculating the noise reduction requirement according to the noise of the noise source, the noise of the sound receiving point and the environment where the noise source is located comprises:
calculating the integral noise reduction requirement according to the noise of the sound receiving point and the noise reduction standard corresponding to the environment where the noise source is located; and/or
And calculating the noise reduction requirement of the specific frequency according to the noise of the noise source and the noise reduction standard corresponding to the environment where the noise source is located.
3. The method of determining parameters of a sound barrier according to claim 2, wherein said step of calculating the areal density of the sound barrier according to the noise reduction requirement comprises:
and calculating the first surface density of the sound barrier according to the integral noise reduction requirement.
4. The method of determining parameters of a sound barrier according to claim 2, wherein said step of calculating the areal density of the sound barrier according to the noise reduction requirement comprises:
calculating a second areal density of the sound barrier based on the specific frequency noise reduction requirement.
5. The method of determining parameters of a sound barrier according to claim 2, wherein said step of calculating the areal density of the sound barrier according to the noise reduction requirement comprises:
calculating a first areal density of the sound barrier according to the overall noise reduction requirement;
calculating a second areal density of the sound barrier according to the specific frequency noise reduction requirement;
the greater of the first areal density and the second areal density is taken as the areal density of the sound barrier.
6. The sound barrier parameter determination method according to any one of claims 3 to 5,
the first areal density is calculated by the formula:
wherein R is1Representing the overall noise reduction requirement, m1Representing the first areal density.
7. The sound barrier parameter determination method according to any one of claims 3 to 5,
the second areal density is calculated by the formula:
R2＝20lgm2+20lgf-48，
wherein R is2Representing the noise reduction requirement of the specific frequency, m2Representing the second areal density, f representing the particular frequency.
8. An apparatus for determining a parameter of a sound barrier, comprising:
the noise acquisition module is used for acquiring the noise of a noise source and the noise of a sound receiving point;
the noise reduction demand calculation module is used for calculating the noise reduction demand according to the noise of the noise source, the noise of the sound receiving point and the environment where the noise source is located;
the surface density calculating module is used for calculating the surface density of the sound barrier according to the noise reduction requirement;
and the sound barrier design module is used for determining the size of the sound barrier and the distance between the sound barrier and the noise source according to the height of the sensitive point and the distance between the sensitive point and the noise source.
9. A computer device, comprising:
at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to perform the sound barrier parameter determination method of any one of claims 1-7.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer instructions for causing the computer to execute the sound barrier parameter determination method according to any one of claims 1-7.
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