Noise control system applied to public places

Abstract

The invention discloses a noise abatement system applied to public places, which comprises a data acquisition module, a noise data analysis and evaluation module and a noise abatement module, and is characterized in that the data acquisition module is used for calling related information of a sound source emitted in a park square; the noise data analysis and evaluation module is used for evaluating the influence of noise generated by the target sound equipment on other surrounding residents; the noise treatment module is used for controlling and managing noise, analyzing the condition that residents are attracted by the noise, deducing the influence degree of the noise according to the attracted attention condition, analyzing the influence degree of the noise generated by the mobile equipment on other residents according to the condition that the other residents are attracted by sound sources, and controlling the noise treatment module according to the influence degree of the noise generated by the mobile equipment. The park plaza noise monitoring system and the park plaza noise monitoring method have the advantages of being high in noise monitoring accuracy and high in humanization degree.

Description

Technical Field

[0001] The invention relates to the technical field of park and square noise management, and in particular to a noise control system applied to public places. Background Art

[0003] With the continuous improvement of facilities in the park, the park square has achieved full coverage of monitoring. During the peak period of walking activities in the park by surrounding residents, the volume of the park square audio is too loud, which may cause many residents to be greatly affected by the noise of square dance during their walks. In the prior art, the park square noise control system obtains the volume of the park square audio through a noise monitor, and at the same time, after detecting that the volume of the audio is greater than a certain threshold, it controls the noise through directional audio, sound barriers, and sound science sheds. However, due to the mixed flow of people and many sound sources in the park square, it is difficult to effectively detect whether the dancing sound has an adverse effect on the surrounding residents in the area, and it is impossible to achieve effective volume adjustment to achieve the purpose of reducing noise pollution in public places; at the same time, the long-term operation of the noise control system equipment will also generate energy waste. Therefore, it is very necessary to design a noise control system for public places with high noise monitoring accuracy and high humanization. Summary of the invention

[0004] The purpose of the present invention is to provide a noise control system for use in public places to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a noise control system applied to public places, comprising a data acquisition module, a noise data analysis and evaluation module and a noise control module, wherein the data acquisition module is used to retrieve relevant information of sound sources emitted in park squares from a database; the noise data analysis and evaluation module is used to evaluate the influence of noise emitted by a target sound on other residents around it; and the noise control module is used to control and manage noise through noise control equipment.

[0006] According to the above technical solution, the data acquisition module includes a resident information acquisition module and an intelligent online monitoring unit. The resident information acquisition module is used to collect physiological data information of residents after being affected by noise and the flow of people passing through the park square; the intelligent online monitoring unit is used to capture images of residents within the range through the intelligent online monitoring instrument, and at the same time, the noise emitted by the target sound, the mixed scattered noise, the physical impact noise and the propagation direction of the corresponding type of noise are monitored through the intelligent online monitoring instrument.

[0007] According to the above technical solution, the noise data analysis and evaluation module includes a sound source split detection module, a sound source attraction analysis module and a comparison module. The sound source split detection module is used to split and detect the volume of different sound sources in the park square; the sound source attraction analysis module is used to analyze the characteristics of residents being attracted to the sound source and the noise influence corresponding to the characteristics of residents being attracted; the comparison module is used to compare the influence of the maximum volume information on other residents obtained by the analysis with the tolerance of other residents to noise;

[0008] The sound source attraction analysis module includes a direction frequency statistics submodule and a disgust level analysis submodule. The direction frequency statistics submodule is used to count the frequency of other residents being attracted by the noise source and heading towards the sound source; the disgust level analysis submodule is used to analyze the disgust level of residents towards the noise source.

[0009] According to the above technical solution, the noise control module includes an audio control module, a sound barrier control module and a sound science shed control module. The audio control module is used to control the online detector to detect the noise emitted by the audio and propagate to a fixed area by activating the directional function in the audio equipment, thereby weakening the influence of the noise mixing in the park square, so that the noise exceeding the limit sound decibel will not affect the surrounding residents. The speaker directional function makes the volume of the noise reaching the park square area reach the decibel required for the residents in the park square area to use the audio in the process of completing entertainment activities obtained through the database, and the reduction ratio of the decibel of the sound propagated outside the park square area is higher than 80%; the sound barrier control module absorbs the scattered noise detected by the intelligent online monitoring instrument through the sound science sound insulation barrier device; the sound science shed control module is used to absorb the physical impact noise detected by the intelligent online monitoring instrument through the sound science shed device.

[0010] According to the above technical solution, the operation method of the noise control system includes the following steps:

[0011] Step S1: a control terminal in the park square is connected to the noise control system, and the park square image is monitored by an intelligent online monitoring device arranged in the park square;

[0012] Step S2: obtaining the image information of the residents in the screen shot by the intelligent online monitoring instrument during the monitoring period, locating the location of the corresponding residents in the screen, and if the target sound recognized by the system through image features is in a working state, retrieving the volume information of the target sound;

[0013] Step S3: By using the intelligent online monitoring devices set at different locations in the park square, according to the monitoring method of step S2, the locations of residents in different monitoring time periods are detected in real time, and the noise impact on the residents' locations is analyzed at the same time. Based on the noise detection results obtained by the analysis, the noise control equipment set in the noise control module is started to manage the noise.

[0014] According to the above technical solution, step S2 includes:

[0015] Step S21: obtaining the image information of the residents in the screen shot by the intelligent online monitoring instrument during the monitoring period, locating the location of the corresponding residents in the screen, and retrieving the volume information of the target audio player by analyzing the volume setting interface of the target audio player through image recognition;

[0016] Step S22: by using image feature analysis technology, the position information of the dancing crowd in the square in the shooting picture is located, and the sound status in the square is synchronized. If it is detected that the sound in the square is turned on, the collected signal is transmitted to the square sound through the top communicator, and the access to the volume value of the sound played in the sound is authorized. If the Bluetooth function of the control terminal in the square sound equipment is turned on at the same time, the volume information is transmitted to the communicator;

[0017] Step S23: When it is detected that the sound value of the sound being played exceeds the limit sound value, the communicator determines the target sound according to the direction of the volume information currently transmitted back, and according to the movement trajectory of the target resident, after the target resident leaves the shooting range of the current intelligent online monitoring instrument, connects to the next intelligent online monitoring instrument to shoot the target resident and the surrounding area, so that the target resident is always within the shooting range.

[0018] According to the above technical solution, step S3 includes:

[0019] Step S31: construct a noise control data resource package in the noise control system, including the flow information of residents passing by, the distance information of multiple residents to the target sound, and the physiological data information of residents after being affected by noise retrieved from the database, wherein the physiological data information includes the volume tolerance information of the target residents and the volume tolerance information based on multiple other residents. A volume model is established through the constructed noise control data resource package, the maximum volume and minimum volume information emitted by the target sound are obtained, and the tolerance of other residents in the area to the current noise is analyzed;

[0020] Step S32: Analyze the influence of the maximum volume information on other residents and compare it with the noise tolerance of other residents. When it is detected that the noise tolerance of other residents is lower than the influence of the maximum volume information on other residents, it is determined that the noise emitted by the target sound is too loud, and an instruction to adjust the noise level is transmitted to the control terminal in the target sound, authorize access to the player software in the sound, and start the noise control device to control the noise emitted by the target sound;

[0021] Step S33: Compare the impact of the volume of the target sound on other residents with the tolerance of other residents in the area to the current noise, and output the comparison result through the communicator.

[0022] According to the above technical solution, in step S31, the detection method for obtaining the noise tolerance of other residents in the current area is specifically:

[0023] Acquire an image of a resident's surroundings, wherein the image of the resident's surroundings includes multiple other residents; determine information of multiple other residents based on the image of the resident's surroundings using image feature recognition, wherein the information of multiple other residents includes physiological information of multiple other residents and distance information of multiple other residents to audio equipment; determine a maximum volume S2 of the current environment using a volume model based on the physiological information of the multiple other residents; determine a minimum volume S2 of the current environment using a volume model based on the volume tolerance of the multiple other residents and the environmental noise data, then the tolerance of other residents to noise in the current area ε=S1-S2.

[0024] According to the above technical solution, in step S32, the method for analyzing the degree to which other residents are affected by the maximum volume information specifically includes:

[0025] Step S321: A ground plane formed by shooting a picture downwards by the top intelligent online monitoring instrument is used as the first picture, and a plane rectangular coordinate system is established with the center point of the top plane of the target audio device as the coordinate origin, and the direction from the coordinate origin to the center point of the target audio device is the positive semi-axis of the Y axis, and the Y axis is rotated 90° clockwise through the coordinate origin in the first picture as the positive semi-axis of the X axis, wherein the coordinate of the center of the top of the target audio device is (0, 0);

[0026] Step S322: According to the real-time position of the target sound, the direction in which the target sound emits sound is calibrated. According to the images of other residents taken by the current intelligent online monitoring instrument, the angle η between the camera and the positive semi-axis of X in the plane rectangular coordinate system corresponding to the facial orientation of other residents is analyzed through image feature recognition. If the angle η∈[-η0°, η0°], it is determined that the currently monitored resident is attracted by the sound source, where η0 is the boundary value of the resident's attraction turning angle retrieved from the database. The total number of times other residents in the area are attracted by the sound source within the monitoring time period t is A, then the frequency of other residents being attracted by the noise source and heading towards the sound source is The value of other residents' aversion to noise sources is the number of directions B corresponding to the single other resident who faces the sound source the most times detected by the system, and the impact of the sound emitted by the target sound on other residents is γ=δF*B, where δ is the same-level comparison level.

[0027] According to the above technical solution, step S33 includes:

[0028] Step S331: extracting the physiological data information of residents in the resource package. When it is detected that the impact of the noise emitted by the target speaker on other residents exceeds the residents' tolerance for the current noise, the communicator sends a collection signal again to authorize access to the player in the target speaker, retrieve the volume information in the player, and transmit the volume adjustment instruction to the control terminal in the audio device;

[0029] Step S332: Control the target sound volume within a certain range during the time period. Based on the information on the number of shooting areas passed by the target resident obtained in step S2, obtain the maximum total distance m=nd walked by the target resident during the time period, where n is the number of shooting areas passed, and d is the diameter of the circular area photographed by the smart online monitoring instrument. When the total distance traveled is lower than the park square area change boundary moving distance retrieved by the system from the database, the volume reduction speed is controlled to be 1 / 10 of the original system set volume reduction speed.

[0030] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention analyzes the situation in which residents are attracted by noise, infers the impact of the noise by attracting residents' attention to the noise, avoids the possibility of inaccurate detection by the sound detection sensor, and realizes the accurate monitoring of the noise control system in the park square; analyzes the impact of the noise emitted by the sound on the surrounding residents by the situation in which other residents are attracted by the sound source when the sound volume is emitted, and detects the impact of the target resident carrying the target sound volume on other residents. An intelligent online monitoring instrument is installed in the park to monitor the noise situation in the park anytime and anywhere, and upload the monitoring data in real time. By analyzing the noise data, the individual influence of the sound noise on residents in the area under the influence of multiple noises can be accurately monitored, thereby improving the reliability of the noise control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0032] Figure 1 It is a schematic diagram of the system module composition of an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1 The present invention provides a technical solution: a noise control system for public places, comprising:

[0035] Data acquisition module, noise data analysis and evaluation module and noise control module. The data acquisition module is used to retrieve relevant information of the sound source in the park square from the database; the noise data analysis and evaluation module is used to evaluate the impact of the noise emitted by the target sound on other residents around; the noise control module is used to control and manage noise through noise control equipment.

[0036] The present invention analyzes the situation in which residents are attracted by noise, infers the impact of the noise by attracting the residents' attention to the noise, avoids the possibility of inaccurate detection by the sound detection sensor, and realizes the accurate monitoring of the noise control system in the park square; analyzes the impact of the noise emitted by the sound on the surrounding residents by the situation in which other residents are attracted by the sound source when the sound volume is emitted, and uses a detection method for the impact of the target resident carrying the target sound volume on other residents. An intelligent online monitoring instrument is installed in the park to monitor the noise situation in the park anytime and anywhere, and the monitoring data is uploaded in real time. By analyzing the noise data, the individual influence of the sound noise on the residents in the area under the influence of multiple noises can be accurately monitored, thereby improving the reliability of the noise control system.

[0037] The data collection module includes a governance equipment data collection module, a resident information collection module and an intelligent online monitoring unit. The resident information collection module is used to collect physiological data information of residents affected by noise and the flow of people passing through the park square; the intelligent online monitoring unit is used to capture images of residents within the range through an intelligent online monitoring device, and at the same time monitor the noise emitted by the target sound, mixed scattered noise, physical impact noise and the propagation direction of the corresponding type of noise through the intelligent online monitoring device.

[0038] The noise data analysis and evaluation module includes a sound source split detection module, a sound source attraction analysis module and a comparison module. The sound source split detection module is used to split and detect the volume of different sound sources in the park square; the sound source attraction analysis module is used to analyze the characteristics of residents being attracted to sound sources and the noise impact corresponding to the characteristics of residents being attracted; the comparison module is used to compare the impact of the maximum volume information on other residents obtained by analysis with the tolerance of other residents to noise;

[0039] The sound source attraction analysis module includes a direction frequency statistics submodule and a disgust degree analysis submodule. The direction frequency statistics submodule is used to count the frequency of other residents being attracted by the noise source and heading towards the sound source; the disgust degree analysis submodule is used to analyze the disgust degree of residents towards the noise source.

[0040] In a preferred embodiment, the noise control module includes an audio control module, a sound barrier control module, an acoustic shed control module, a directional speaker unit, an inflatable construction soundproof box unit, a movable construction soundproof cover unit and a modular construction soundproof wall unit. The audio control module is used to start the directional function in the audio equipment to control the online detector to detect the noise emitted by the audio and propagate to a fixed area, thereby weakening the influence of the noise mixing in the park square, so that the noise exceeding the limit sound level will not affect the surrounding residents. The speaker directional function makes the volume of the noise reaching the park square area reach the decibel required for the residents in the park square area to use the audio in the process of completing entertainment activities obtained through the database, and the reduction ratio of the decibel of the sound propagated outside the park square area is higher than 80%; the sound barrier control module absorbs the scattered noise detected by the intelligent online monitor through the acoustic sound barrier device; the acoustic shed control module is used to absorb the physical impact noise detected by the intelligent online monitor through the acoustic shed device; the directional speaker unit includes a directional speaker unit and a large-screen high-pitched speaker unit.

[0041] In addition to processing and adjusting the noise played by users' mobile phones, the noise control system can also control other types of noise, provide basic data for noise control, and further improve the noise control scope of the noise control system.

[0042] In a preferred embodiment, the method for operating the noise control system comprises the following steps:

[0043] Step S1: The control terminal in the park square is connected to the noise control system, and the park square image is monitored through the intelligent online monitoring device set in the park square;

[0044] Step S2: obtaining the image information of the residents in the screen shot by the intelligent online monitoring instrument during the monitoring period, locating the location of the corresponding residents in the screen, and if the target sound recognized by the system through image features is in a working state, retrieving the volume information of the target sound;

[0045] Step S3: Through the intelligent online monitoring devices set up at different locations in the park square, according to the monitoring method of step S2, the locations of residents in different monitoring time periods are detected in real time, and the noise impact on the residents' locations is analyzed at the same time. Based on the noise detection results obtained by the analysis, the noise control equipment set in the noise control module is started to manage the noise.

[0046] In this embodiment, step S2 includes:

[0047] Step S21: obtaining the image information of the residents in the screen shot by the intelligent online monitoring instrument during the monitoring period, locating the location of the corresponding residents in the screen, and retrieving the volume information of the target audio player by analyzing the volume setting interface of the target audio player through image recognition;

[0048] Step S22: by using image feature analysis technology, the position information of the dancing crowd in the square in the shooting picture is located, and the sound status in the square is synchronized. If it is detected that the sound in the square is turned on, the collected signal is transmitted to the square sound through the top communicator, and the access to the volume value of the sound played in the sound is authorized. If the Bluetooth function of the control terminal in the square sound equipment is turned on at the same time, the volume information is transmitted to the communicator;

[0049] Step S23: When it is detected that the sound value of the sound being played exceeds the limit sound value, the communicator determines the target sound according to the direction of the volume information currently transmitted back, and according to the movement trajectory of the target resident, after the target resident leaves the shooting range of the current intelligent online monitoring instrument, connects to the next intelligent online monitoring instrument to shoot the target resident and the surrounding area, so that the target resident is always within the shooting range.

[0050] In this embodiment, step S3 includes:

[0051] Step S31: construct a noise control data resource package in the noise control system, including the flow information of residents passing by, the distance information of multiple residents to the target sound, and the physiological data information of residents after being affected by noise retrieved from the database, wherein the physiological data information includes the volume tolerance information of the target residents and the volume tolerance information based on multiple other residents. A volume model is established through the constructed noise control data resource package, the maximum volume and minimum volume information emitted by the target sound are obtained, and the tolerance of other residents in the area to the current noise is analyzed;

[0052] Step S32: Analyze the influence of the maximum volume information on other residents and compare it with the noise tolerance of other residents. When it is detected that the noise tolerance of other residents is lower than the influence of the maximum volume information on other residents, it is determined that the noise emitted by the target sound is too loud, and an instruction to adjust the noise level is transmitted to the control terminal in the target sound, authorize access to the player software in the sound, and start the noise control device to control the noise emitted by the target sound;

[0053] Step S33: Compare the impact of the volume of the target sound on other residents with the tolerance of other residents in the area to the current noise, and output the comparison result through the communicator.

[0054] In step S31 of this embodiment, the detection method for obtaining the noise tolerance of other residents in the current area is specifically as follows:

[0055] An image of the resident's surroundings is obtained, where the image of the resident's surroundings includes multiple other residents. Information of multiple other residents is determined based on the image of the resident's surroundings using image feature recognition, where the information of multiple other residents includes physiological information of multiple other residents and distance information of multiple other residents to audio equipment. A volume model is used to determine the maximum volume S2 of the current environment based on the physiological information of multiple other residents. A volume model is used to determine the minimum volume S2 of the current environment based on the volume tolerance of multiple other residents and environmental noise data. Then, the tolerance of other residents to noise in the current area ε=S1-S2.

[0056] Among them, a volume model that distinguishes the minimum volume and maximum volume under multiple noise sources. The volume-related features in the volume model are mainly reflected in: sound direction, sound feature overlap, sound frequency, and sound confusion;

[0057] When multiple residents are in the same environment, all residents can fully receive the sound source in the environment. The smaller the minimum sound source in the environment, the lower the residents' tolerance for other high sound sources. On the other hand, the larger the maximum sound source in the environment, the greater the impact of the sound source on the residents. In summary, the difference between the maximum and minimum sound sources in the environment is monitored.

[0058] This technical solution solves the problem that the noise sources in the park square are mixed, the same area is affected by multiple noise sources, and the sound detection sensor cannot effectively know the extent of the noise impact on the specific location of the residents. By analyzing the situation of residents being attracted by noise and inferring the impact of the noise based on the attention they attract, the possibility of inaccurate detection by the sound detection sensor is avoided, and the noise control system can achieve accurate monitoring in the park square.

[0059] In step S32 of this embodiment, the method for analyzing the degree to which other residents are affected by the maximum volume information specifically includes:

[0060] Step S321: A ground plane formed by shooting a picture downwards by the top intelligent online monitoring instrument is used as the first picture, and a plane rectangular coordinate system is established with the center point of the top plane of the target audio device as the coordinate origin, and the direction from the coordinate origin to the center point of the target audio device is the positive semi-axis of the Y axis, and the Y axis is rotated 90° clockwise through the coordinate origin in the first picture as the positive semi-axis of the X axis, wherein the coordinate of the center of the top of the target audio device is (0, 0);

[0061] Step S322: According to the real-time position of the target sound, the direction in which the target sound emits sound is calibrated. According to the images of other residents taken by the current intelligent online monitoring instrument, the angle η between the camera and the positive semi-axis of X in the plane rectangular coordinate system corresponding to the facial orientation of other residents is analyzed through image feature recognition. If the angle η∈[-η0°, η0°], it is determined that the currently monitored resident is attracted by the sound source, where η0 is the boundary value of the resident's attraction turning angle retrieved from the database. The total number of times other residents in the area are attracted by the sound source within the monitoring time period t is A, then the frequency of other residents being attracted by the noise source and heading towards the sound source is The value of other residents' aversion to noise sources is the number of directions B corresponding to the single other resident who faces the sound source the most times detected by the system, and the impact of the sound emitted by the target sound on other residents is γ=δF*B, where δ is the same-level comparison level.

[0062] By monitoring the influence of the sound source on other residents when the sound is emitted, the impact of the noise emitted by the target sound on other residents is analyzed, and the detection method of the impact of the volume of the target sound on other residents is used to accurately monitor the individual influence of the target sound noise on residents in the area under the influence of multiple noises, thereby improving the reliability of the noise control system.

[0063] In this embodiment, step S33 includes:

[0064] Step S331: extracting the physiological data information of residents in the resource package. When it is detected that the impact of the noise emitted by the target speaker on other residents exceeds the residents' tolerance for the current noise, the communicator sends a collection signal again to authorize access to the player in the target speaker, retrieve the volume information in the player, and transmit the volume adjustment instruction to the control terminal in the audio device;

[0065] Step S332: Control the target sound volume within a certain range during the time period. Based on the information on the number of shooting areas passed by the target resident obtained in step S2, obtain the maximum total distance m=nd walked by the target resident during the time period, where n is the number of shooting areas passed, and d is the diameter of the circular area photographed by the smart online monitoring instrument. When the total distance traveled is lower than the park square area change boundary moving distance retrieved by the system from the database, the volume reduction speed is controlled to be 1 / 10 of the original system-set volume reduction speed.

[0066] The longer the total distance traveled by the target residents, the greater the changes in the number and volume of sound sources in the environment, and the greater the degree of sound changes that the target residents can accept; conversely, the shorter the total distance traveled by the target residents, the smaller the changes in the number and volume of sound sources in the environment, and the smaller the degree of sound changes that the target residents can accept.

[0067] This technical solution solves the problem of the noise control system regulating and controlling the noise emitted by the target speakers in the park square according to the noise impact. When the ambient sound changes greatly, the volume may change greatly in a short period of time, affecting the residents' experience of square dancing through the sound of the target speakers. By appropriately slowing down the volume reduction speed while ensuring that the noise emitted by the target speakers is within the tolerance range of other residents, the residents' user experience can be greatly improved and their aversion to the noise control system can be reduced.

[0068] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0069] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A noise control system for public places, characterized by: The noise control system includes a data acquisition module, a noise data analysis and evaluation module and a noise control module. The data acquisition module is used to retrieve relevant information of the sound source emitted in the park square from the database; the noise data analysis and evaluation module is used to evaluate the impact of the noise emitted by the target sound on other residents around; and the noise control module is used to control and manage noise through noise control equipment.

2. A noise control system for use in public places according to claim 1, characterized in that: The data acquisition module includes a resident information acquisition module and an intelligent online monitoring unit. The resident information acquisition module is used to collect physiological data information of residents affected by noise and traffic information of residents passing through the park square; the intelligent online monitoring unit is used to capture images of residents within the range through the intelligent online monitoring instrument, and at the same time monitor the noise emitted by the target sound, mixed scattered noise, physical impact noise and the propagation direction of corresponding types of noise through the intelligent online monitoring instrument.

3. A noise control system for use in public places according to claim 2, characterized in that: The noise data analysis and evaluation module includes a sound source split detection module, a sound source attraction analysis module and a comparison module. The sound source split detection module is used to split and detect the volume of different sound sources in the park square; the sound source attraction analysis module is used to analyze the characteristics of residents being attracted to the sound source and the noise influence corresponding to the characteristics of residents being attracted; the comparison module is used to compare the influence of other residents on the maximum volume information obtained by analysis with the tolerance of other residents to noise; The sound source attraction degree analysis module includes a direction frequency statistics submodule and a disgust degree analysis submodule, wherein the direction frequency statistics submodule is used to count the frequency of other residents being attracted by the noise source and heading toward the direction of the sound source; The disgust level analysis submodule is used to analyze residents' disgust level values ​​for noise sources.

4. A noise control system for use in public places according to claim 3, characterized in that: The noise control module includes an audio control module, a sound barrier control module and a sound science shed control module. The audio control module is used to control the noise emitted by the audio detected by the online detector to propagate to a fixed area by activating the directional function in the audio equipment, thereby weakening the influence of the noise mixing in the park square, so that the noise exceeding the limit sound decibel will not affect the surrounding residents. The speaker directional function makes the volume of the noise reaching the park square area reach the decibel required for the residents in the park square area to use the audio in the process of completing entertainment activities obtained through the database, and the reduction ratio of the decibel of the sound propagated outside the park square area is higher than 80%; the sound barrier control module absorbs the scattered noise detected by the intelligent online monitoring instrument through the sound science sound insulation barrier device; the sound science shed control module is used to absorb the physical impact noise detected by the intelligent online monitoring instrument through the sound science shed device.

5. According to a noise control system for use in public places as claimed in claim 4, the operation method of the noise control system comprises the following steps: Step S1: a control terminal in the park square is connected to the noise control system, and the park square image is monitored by an intelligent online monitoring device arranged in the park square; Step S2: obtaining the image information of the residents in the screen shot by the intelligent online monitoring instrument during the monitoring period, locating the location of the corresponding residents in the screen, and if the target sound recognized by the system through image features is in a working state, retrieving the volume information of the target sound; Step S3: By using the intelligent online monitoring devices set at different locations in the park square, according to the monitoring method of step S2, the locations of residents in different monitoring time periods are detected in real time, and the noise impact on the residents' locations is analyzed at the same time. Based on the noise detection results obtained by the analysis, the noise control equipment set in the noise control module is started to manage the noise.

6. A noise control system for use in public places according to claim 5, characterized in that: The step S2 comprises: Step S21: obtaining the image information of the residents in the screen shot by the intelligent online monitoring instrument during the monitoring period, locating the location of the corresponding residents in the screen, and retrieving the volume information of the target audio player by analyzing the volume setting interface of the target audio player through image recognition; Step S22: by using image feature analysis technology, the position information of the dancing crowd in the square in the shooting picture is located, and the sound status in the square is synchronized. If it is detected that the sound in the square is turned on, the collected signal is transmitted to the square sound through the top communicator, and the access to the volume value of the sound played in the sound is authorized. If the Bluetooth function of the control terminal in the square sound equipment is turned on at the same time, the volume information is transmitted to the communicator; Step S23: When it is detected that the sound value of the sound being played exceeds the limit sound value, the communicator determines the target sound according to the direction of the volume information currently transmitted back, and according to the movement trajectory of the target resident, after the target resident leaves the shooting range of the current intelligent online monitoring instrument, connects to the next intelligent online monitoring instrument to shoot the target resident and the surrounding area, so that the target resident is always within the shooting range.

7. A noise control system for use in public places according to claim 6, characterized in that: The step S3 comprises: Step S31: construct a noise control data resource package in the noise control system, including the flow information of residents passing by, the distance information of multiple residents to the target sound, and the physiological data information of residents after being affected by noise retrieved from the database, wherein the physiological data information includes the volume tolerance information of the target residents and the volume tolerance information based on multiple other residents. A volume model is established through the constructed noise control data resource package, the maximum volume and minimum volume information emitted by the target sound are obtained, and the tolerance of other residents in the area to the current noise is analyzed; Step S32: Analyze the influence of the maximum volume information on other residents and compare it with the noise tolerance of other residents. When it is detected that the noise tolerance of other residents is lower than the influence of the maximum volume information on other residents, it is determined that the noise emitted by the target sound is too loud, and an instruction to adjust the noise level is transmitted to the control terminal in the target sound, authorize access to the player software in the sound, and start the noise control device to control the noise emitted by the target sound; Step S33: Compare the impact of the volume of the target sound on other residents with the tolerance of other residents in the area to the current noise, and output the comparison result through the communicator.

8. The noise control system for public places according to claim 7 is characterized in that: In step S31, the detection method for obtaining the noise tolerance of other residents in the current area is specifically as follows: Acquire a surrounding environment image of the resident, the surrounding environment image of the resident includes a plurality of other residents, and determine information of the plurality of other residents using image feature recognition based on the surrounding environment image of the resident, the plurality of other residents information including physiological information of the plurality of other residents and distance information of the plurality of other residents from the audio system; The maximum volume S2 of the current environment is determined based on the physiological information of the other residents using a volume model; the minimum volume S2 of the current environment is determined based on the volume tolerance of the other residents and the environmental noise data using a volume model, then the tolerance of other residents to noise in the current area ε=S1-S2.

9. A noise control system for use in public places according to claim 8, characterized in that: In step S32, the method for analyzing the influence of the maximum volume information on other residents specifically includes: Step S321: A ground plane formed by shooting a picture downwards by the top intelligent online monitoring instrument is used as the first picture, and a plane rectangular coordinate system is established with the center point of the top plane of the target audio device as the coordinate origin, and the direction from the coordinate origin to the center point of the target audio device is the positive semi-axis of the Y axis, and the Y axis is rotated 90° clockwise through the coordinate origin in the first picture as the positive semi-axis of the X axis, wherein the coordinate of the center of the top of the target audio device is (0, 0); Step S322: According to the real-time position of the target sound, the direction in which the target sound emits sound is calibrated. According to the images of other residents taken by the current intelligent online monitoring instrument, the angle η between the camera and the positive semi-axis of X in the plane rectangular coordinate system corresponding to the facial orientation of other residents is analyzed through image feature recognition. If the angle η∈[-η0°, η0°], it is determined that the currently monitored resident is attracted by the sound source, where η0 is the boundary value of the resident's attraction turning angle retrieved from the database. The total number of times other residents in the area are attracted by the sound source within the monitoring time period t is A, then the frequency of other residents being attracted by the noise source and heading towards the sound source is The value of other residents' aversion to noise sources is the number of directions B corresponding to the single other resident who faces the sound source the most times detected by the system, and the impact of the sound emitted by the target sound on other residents is γ=δF*B, where δ is the same-level comparison level.

10. A noise control system for use in public places according to claim 9, characterized in that: The step S33 comprises: Step S331: extracting the physiological data information of residents in the resource package. When it is detected that the impact of the noise emitted by the target speaker on other residents exceeds the residents' tolerance for the current noise, the communicator sends a collection signal again to authorize access to the player in the target speaker, retrieve the volume information in the player, and transmit the volume adjustment instruction to the control terminal in the audio device; Step S332: Control the target sound volume within a certain range during the time period. Based on the information on the number of shooting areas passed by the target resident obtained in step S2, obtain the maximum total distance m=nd walked by the target resident during the time period, where n is the number of shooting areas passed, and d is the diameter of the circular area photographed by the smart online monitoring instrument. When the total distance traveled is lower than the park square area change boundary moving distance retrieved by the system from the database, the volume reduction speed is controlled to be 1 / 10 of the original system set volume reduction speed.

Images