Geographic Information Monitoring System Based on Intelligent Mobile Terminal

Abstract

The present invention relates to the field of geographic information monitoring technology, and relates to a geographic information monitoring system based on an intelligent mobile terminal, comprising a geographic data processing module, a noise area analysis module, a pollution source tracing analysis module and a noise pollution control module. The system collects urban geographic area data based on a GIS system embedded in the intelligent mobile terminal, performs data cleaning processing on the collected urban geographic area data, and then analyzes the total received noise value corresponding to each time period of a target building area, thereby screening out each noise pollution time period corresponding to the target building area, and tracing the noise pollution source of the target building area, thereby determining the type of noise source activity leading to the target building area, and further controlling the noise emission of the corresponding noise source in the target building area, thereby ensuring the implementation of effective management, ensuring the completeness of monitoring and evaluation of urban noise source tracing management, and the comprehensiveness of management measures, and improving technical innovation.

Description

Technical Field

[0001] The invention belongs to the technical field of geographic information monitoring, and relates to a geographic information monitoring system based on an intelligent mobile terminal. Technical Background

[0002] With the rapid advancement of urbanization in various places, various high-rise buildings are rising from the ground, and the hazards of construction noise are becoming more and more noticeable and thought-provoking. The importance of noise management lies in its concern for people's health and quality of life. Effective noise control can not only reduce health risks such as sleep disorders, psychological stress and hearing loss, but also help improve work efficiency, learning environment and living comfort, while protecting the environment, promoting economic development and maintaining social stability. Therefore, noise management should be regarded as an important urban planning and environmental protection work, which highlights the importance of tracing and controlling the source of urban noise.

[0003] At present, there are still some areas that need to be optimized in the urban noise source control and management, which are specifically reflected in the following aspects:

[0004] 1. The current lack of a complete noise monitoring and assessment system makes it impossible to accurately understand the specific conditions and impact scope of noise sources, limiting the implementation of effective management.

[0005] 2. The current urban noise source tracing management has many problems and drawbacks, such as imperfect monitoring and evaluation, incomplete management measures, insufficient technological innovation and insufficient coordination. Summary of the invention

[0006] In view of the above problems existing in the prior art, the present invention provides a geographic information monitoring system based on a smart mobile terminal to solve the above technical problems.

[0007] In order to achieve the above purpose and other purposes, the technical solution adopted by the present invention is as follows:

[0008] On the one hand, the present invention provides a geographic information monitoring system based on an intelligent mobile terminal, which includes a geographic data processing module, a noise area analysis module, a pollution source tracing analysis module and a noise pollution control module.

[0009] The geographic data processing module: collects urban geographic area data based on the GIS system embedded in the intelligent mobile terminal, and performs data cleaning on the collected urban geographic area data;

[0010] The noise area analysis module analyzes the total received noise value of each time period corresponding to the target building area, thereby screening out each noise pollution time period corresponding to the target building area, and marking it as each pollution time period corresponding to the target building area;

[0011] The pollution source tracing analysis module: traces the noise pollution source of the target building area, and then determines the type of noise source activity that causes the target building area;

[0012] The noise pollution control module performs noise emission control on the noise sources corresponding to the target building area.

[0013] Exemplarily, the urban geographic area data specifically include the noise amplitude, noise frequency, noise phase and noise spectrum of the target building area corresponding to each time period and the noise signal value and noise intensity value corresponding to each time point.

[0014] Exemplarily, the collected urban geographic information data is cleaned as follows:

[0015] Obtain the noise spectrum of the target building area corresponding to each time period , i represents the number of the time period, i=1,2,...w, f represents the frequency index;

[0016] By integrating the formula , calculate the noise power spectrum density of the target building area corresponding to each time period ,in, The symbol indicates the module;

[0017] Extract the noise frequency of the target building area corresponding to each time period, compare it with the noise power spectrum density of the target building area corresponding to each time period, and then obtain the preliminary analysis noise type of the target building area corresponding to each time period, among which the noise type is divided into uniform noise, Gaussian noise and other noise;

[0018] According to the noise signal value at each time point in each period of the target building area , j represents the number of each time point, j=1,2...q, and the mean, variance, deviation and kurtosis are calculated respectively, thereby respectively calculating the mean, variance, deviation and kurtosis of the noise signal in the target building area corresponding to each time period, and then drawing the noise signal distribution map of the target building area corresponding to each time period;

[0019] Based on the noise signal distribution map of the target building area corresponding to each time period, the in-depth analysis noise type of the target building area corresponding to each time period is further obtained, and finally the noise type of the target building area corresponding to each time period is compared.

[0020] Exemplarily, the total received noise value corresponding to each time period in the target building area is analyzed, and the specific analysis process is as follows:

[0021] According to the noise intensity value of each time point in each time period corresponding to the target building area, it is compared with the set of noise intensity values ​​corresponding to each set of noise intensity levels, and the noise intensity level of each time point in each time period corresponding to the target building area is further obtained. The intersection operation is performed to obtain the noise intensity level corresponding to the most time points as the noise intensity level of the target building area corresponding to each time period;

[0022] Obtain the noise amplitude of the target building area at each time period , Noise frequency , noise phase ,pass Calculate the total received noise value of the target building area for each time period , e represents a natural constant, Represents the noise intensity level of the target building area corresponding to the i-th time period.

[0023] Exemplarily, the specific screening process of filtering out the target building area corresponding to each noise pollution period is as follows:

[0024] The total receiving noise value of the target building area corresponding to each time period is compared with the predefined permitted receiving noise value corresponding to each time period. If the total receiving noise value of the target building area corresponding to a certain time period is greater than the predefined permitted receiving noise value corresponding to each time period, the time period is marked as a noise pollution time period, thereby screening out the noise pollution time periods corresponding to the target building area.

[0025] Exemplarily, the noise pollution source tracing for the target building area is specifically carried out as follows:

[0026] Deploy sound source locators in all directions of the target building area, and set a unified start time for the sound source locators corresponding to each direction, so as to receive the receiving time points of each noise source corresponding to each direction of the target building area. , c represents the number of each noise source, c=1,2,...p, u represents the number of each direction, u=u1,u2,u3 and u4, where u1,u2,u3 and u4 represent the east, south, west and north directions respectively;

[0027] The wind speed and wind direction at each time point in the target building area corresponding to each pollution period are obtained, and the wind impact noise propagation assessment coefficient of the target building area corresponding to each pollution period is further obtained. , b represents the number of each pollution period, b=1,2,...d;

[0028] The receiving time points of each noise source received in each direction of the target building area are subtracted and averaged in turn to obtain the average time difference of the noise source received in each direction of the target building area. ;

[0029] The sound reference speed corresponding to the predefined unit duration , and then calculate the reference distance of the noise source corresponding to each direction of the target building area , d represents the total number of pollution periods;

[0030] Taking the position of the sound source locator in all directions of the target building area as the center of the circle and the reference distance of the noise source in all directions of the target building area as the radius, the noise area range corresponding to the noise source in all directions of the target building area is constructed, and the intersection operation is performed to obtain the reference area range corresponding to the noise source in the target building area.

[0031] Exemplarily, the process of obtaining the wind noise transmission assessment coefficient corresponding to each pollution period in the target building area is as follows:

[0032] According to the wind direction of the target building area at each time point in each pollution period, a keyword set of wind direction of the target building area at each time point in each pollution period is formed. , and simultaneously form a set of location keywords corresponding to each location of the target building area , and then according to the analytical formula , the wind direction text similarity coefficients of the target building area corresponding to each pollution period and each time point in each direction are analyzed and obtained. , and mark it as the wind direction influence coefficient at each time point in each pollution period corresponding to each direction of the target building area;

[0033] According to the wind speed at each time point in each pollution period corresponding to the target building area, it is compared with the wind speed set corresponding to each predefined wind speed level to obtain the wind speed level at each time point in each pollution period corresponding to the target building area. ;

[0034] According to the analysis formula , the wind impact noise propagation assessment coefficient of the target building area corresponding to each pollution period is analyzed and obtained , u4 represents the total number of positions, q is the total number of time points, It is the noise propagation influence coefficient corresponding to the predefined unit wind speed level.

[0035] Exemplarily, the specific determination process of determining the type of noise source activity that causes the target building area is as follows:

[0036] The reference area range of the target building area corresponding to the noise source is further divided into sub-areas according to the preset area range, and the noise decibel value of each sub-area within the reference area range of the target building area corresponding to the noise source is obtained by using the noise sensing system, and the noise decibel values ​​of each sub-area within the reference area range of the target building area corresponding to the noise source are arranged in descending order, thereby screening out the sub-area within the reference area range of the target building area corresponding to the noise source corresponding to the maximum noise decibel value, and marking it as the reference sub-area;

[0037] The noise decibel value of the reference sub-area of ​​the reference area range of the noise source corresponding to the target building area is compared with the predefined reference noise value set corresponding to each noise source activity type, thereby obtaining the noise source activity type of the reference area range of the noise source corresponding to the target building area, wherein the noise source activity type includes industrial noise sources and building noise sources, and the noise source activity type of the reference area range of the noise source corresponding to the target building area is marked as the noise source activity type of the target building area.

[0038] Exemplarily, the noise emission control is performed on the noise source corresponding to the target building area, and the specific control process is as follows:

[0039] If the noise source activity type in the target building area is identified as an industrial noise source, industrial restriction management will be carried out on all industrial enterprises within the reference area of ​​the target building area corresponding to the noise source;

[0040] If the noise source activity type in the target building area is identified as a traffic noise source, road restriction management will be implemented on each road within the reference area corresponding to the noise source in the target building area.

[0041] As described above, the geographic information monitoring system based on the intelligent mobile terminal provided by the present invention has at least the following beneficial effects:

[0042] The geographic information monitoring system based on the intelligent mobile terminal provided by the present invention collects urban geographic area data based on the GIS system embedded in the intelligent mobile terminal, and performs data cleaning processing on the collected urban geographic area data, and then analyzes the total received noise value corresponding to each time period of the target building area, thereby screening out the target building area corresponding to each noise pollution time period, and tracing the noise pollution source of the target building area, and then determining the type of noise source activity that causes the target building area, and further controlling the noise emission of the noise source corresponding to the target building area, accurately understanding the specific situation and impact range of the noise source, ensuring the implementation of effective management, ensuring the completeness of monitoring and evaluation of urban noise source tracing management, and the comprehensiveness of management measures, and improving technical innovation and coordination and other issues and drawbacks. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0044] Figure 1 It is a schematic diagram of the connection of various modules of the system of the present invention. DETAILED DESCRIPTION

[0045] The above contents in combination with the implementation of the present invention are merely examples and explanations of the concept of the present invention. The technical personnel in the relevant technical field may make various modifications or supplements to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the claims, they shall all fall within the protection scope of the present invention.

[0046] See also Figure 1 As shown, a geographic information monitoring system based on a smart mobile terminal includes a geographic data processing module, a noise area analysis module, a pollution source tracing analysis module and a noise pollution control module.

[0047] The noise area analysis module is connected to the geographic data processing module and the pollution source tracing analysis module respectively, and the noise pollution control module is connected to the pollution source tracing analysis module.

[0048] The geographic data processing module: collects urban geographic area data based on the GIS system embedded in the intelligent mobile terminal, and performs data cleaning on the collected urban geographic area data;

[0049] In a possible design, the urban geographic area data specifically includes the noise amplitude, noise frequency, noise phase and noise spectrum of the target building area corresponding to each time period and the noise signal value and noise intensity value corresponding to each time point.

[0050] In a possible design, the collected urban geographic information data is cleaned as follows:

[0051] Obtain the noise spectrum of the target building area corresponding to each time period , i represents the number of the time period, i=1,2,...w, f represents the frequency index;

[0052] By integrating the formula , calculate the noise power spectrum density of the target building area corresponding to each time period ,in, The symbol indicates the module;

[0053] Extract the noise frequency of the target building area corresponding to each time period, compare it with the noise power spectrum density of the target building area corresponding to each time period, and then obtain the preliminary analysis noise type of the target building area corresponding to each time period, among which the noise type is divided into uniform noise, Gaussian noise and other noise;

[0054] It should be added that the specific process of obtaining the preliminary analysis noise type corresponding to each time period in the target building area is as follows:

[0055] Step 1: First, compare the noise frequency of the target building area corresponding to each time period with the noise power spectrum density of the target building area corresponding to each time period. If the noise power spectrum density of the target building area corresponding to a certain time period does not change with the change of the noise frequency of the target building area corresponding to the time period, then the preliminary analysis noise type of the target building area corresponding to the time period is marked as Gaussian noise, otherwise continue to step 2;

[0056] Step 2: If the ratio of the noise power spectrum density of the target building area corresponding to a certain period of time to the noise frequency of the target building area corresponding to the period of time is within the set allowable range of the ratio, the preliminary analysis noise type of the target building area corresponding to the period of time is marked as uniform noise; otherwise, the preliminary analysis noise type of the target building area corresponding to the period of time is marked as other noise.

[0057] According to the noise signal value at each time point in each period of the target building area , j represents the number of each time point, j=1,2...q, and the mean, variance, deviation and kurtosis are calculated respectively, thereby respectively calculating the mean, variance, deviation and kurtosis of the noise signal in the target building area corresponding to each time period, and then drawing the noise signal distribution map of the target building area corresponding to each time period;

[0058] It should be noted that the calculation obtains the noise signal mean, noise signal variance, noise signal deviation and noise signal kurtosis value of the target building area corresponding to each time period, and the specific calculation formula is as follows:

[0059] The mean value of noise signal in each time period of the target building area , q represents the total number of time points;

[0060] The variance value of the noise signal in the target building area corresponding to each time period ;

[0061] It should be added that q-1 is used instead of q as the denominator in order to obtain an unbiased estimate.

[0062] Noise signal deviation value corresponding to each time period in the target building area ;

[0063] The peak value of the noise signal in the target building area at each time period , where exp represents an arbitrary constant;

[0064] It should be added that the purpose of subtracting exp from the formula of the kurtosis value of the noise signal in each time period in the target building area is to make the kurtosis of the normal distribution equal to 0.

[0065] It should be noted that the noise signal distribution map of the target building area corresponding to each time period is obtained by drawing, and the specific drawing process is as follows:

[0066] With each time point in the time period as the horizontal axis, the noise signal value as the vertical axis, the mean value of the noise signal in the target building area corresponding to each time period as the center position, the variance value of the noise signal in the target building area corresponding to each time period as the measure of the signal value distribution width, the noise signal deviation value in the target building area corresponding to each time period as the measure of the asymmetry of the noise signal distribution, and the kurtosis value of the noise signal in the target building area corresponding to each time period as the sharpness of the noise signal distribution, the noise signal distribution map of the target building area corresponding to each time period is drawn.

[0067] It is important to add that high kurtosis may indicate the presence of prominent peaks or extremes in the voice, whereas low kurtosis indicates a more evenly distributed noise.

[0068] It should be added that if the mean is close to zero, the variance is stable, the skewness is close to zero, and the kurtosis is close to zero or exp, then the noise type may be close to Gaussian noise.

[0069] Based on the noise signal distribution map of the target building area corresponding to each time period, the in-depth analysis noise type of the target building area corresponding to each time period is further obtained, and finally the noise type of the target building area corresponding to each time period is compared.

[0070] It should be supplemented that the noise signal distribution map of the target building area corresponding to each time period is compared with the noise signal distribution map corresponding to the predefined noise type, and the noise signal distribution map corresponding to the noise type with the largest overlap is used as the in-depth analysis noise type of the target building area corresponding to each time period.

[0071] The preliminary analysis noise type corresponding to each time period in the target building area is compared with the deep analysis noise type. If the comparison is inconsistent, the deep analysis noise type will be used as the noise type corresponding to each time period in the target building area. If the comparison is consistent, the preliminary analysis noise type will be used as the noise type corresponding to each time period in the target building area.

[0072] The noise area analysis module analyzes the total received noise value of each time period corresponding to the target building area, thereby screening out each noise pollution time period corresponding to the target building area, and marking it as each pollution time period corresponding to the target building area;

[0073] In a possible design, the total received noise value corresponding to each time period in the target building area is analyzed, and the specific analysis process is as follows:

[0074] According to the noise intensity value of each time point in each time period corresponding to the target building area, it is compared with the set of noise intensity values ​​corresponding to each set of noise intensity levels, and the noise intensity level of each time point in each time period corresponding to the target building area is further obtained. The intersection operation is performed to obtain the noise intensity level corresponding to the most time points as the noise intensity level of the target building area corresponding to each time period;

[0075] Obtain the noise amplitude of the target building area at each time period , Noise frequency , noise phase ,pass Calculate the total received noise value of the target building area for each time period , e represents a natural constant, Represents the noise intensity level of the target building area corresponding to the i-th time period.

[0076] In a possible design, the target building area is screened out corresponding to each noise pollution period, and the specific screening process is as follows:

[0077] The total receiving noise value of the target building area corresponding to each time period is compared with the predefined permitted receiving noise value corresponding to each time period. If the total receiving noise value of the target building area corresponding to a certain time period is greater than the predefined permitted receiving noise value corresponding to each time period, the time period is marked as a noise pollution time period, thereby screening out the noise pollution time periods corresponding to the target building area.

[0078] The pollution source tracing analysis module: traces the noise pollution source of the target building area, and then determines the type of noise source activity that causes the target building area;

[0079] In a possible design, the noise pollution source of the target building area is traced, and the specific tracing process is as follows:

[0080] Deploy sound source locators in all directions of the target building area, and set a unified start time for the sound source locators corresponding to each direction, so as to receive the receiving time points of each noise source corresponding to each direction of the target building area. , c represents the number of each noise source, c=1,2,...p, u represents the number of each direction, u=u1,u2,u3 and u4, where u1,u2,u3 and u4 represent the east, south, west and north directions respectively;

[0081] The wind speed and wind direction of the target building area at each time point in each pollution period are obtained, and the wind impact noise propagation assessment coefficient of the target building area corresponding to each pollution period is further obtained. , b represents the number of each pollution period, b=1,2,...d;

[0082] The receiving time points of each noise source received in each direction of the target building area are subtracted and averaged in turn to obtain the average time difference of the noise source received in each direction of the target building area. ;

[0083] The sound reference speed corresponding to the predefined unit duration , and then calculate the reference distance of the noise source corresponding to each direction of the target building area , d represents the total number of pollution periods;

[0084] Taking the position of the sound source locator in each direction of the target building area as the center of the circle and the reference distance of the noise source in each direction of the target building area as the radius, the noise area range corresponding to the noise source in each direction of the target building area is constructed, and the intersection operation is performed to obtain the reference area range of the noise source corresponding to the target building area.

[0085] In a possible design, the wind impact noise propagation assessment coefficient corresponding to each pollution period in the target building area is obtained, and the specific process is as follows:

[0086] According to the wind direction of the target building area at each time point in each pollution period, a keyword set of wind direction of the target building area at each time point in each pollution period is formed. , and simultaneously form a set of location keywords corresponding to each location of the target building area , and then according to the analytical formula , the wind direction text similarity coefficients of the target building area corresponding to each pollution period and each time point in each direction are analyzed and obtained. , and mark it as the wind direction influence coefficient at each time point in each pollution period corresponding to each direction of the target building area;

[0087] For example, if the wind direction of the target building area at a certain time point in a pollution period is southeast wind, then east and south constitute the wind direction keyword set; if the wind direction of the target building area at a certain time point in a pollution period is easterly wind or east wind, then east constitutes the wind direction keyword set;

[0088] According to the wind speed at each time point in each pollution period corresponding to the target building area, it is compared with the wind speed set corresponding to each predefined wind speed level to obtain the wind speed level at each time point in each pollution period corresponding to the target building area. ;

[0089] According to the analysis formula , the wind impact noise propagation assessment coefficient of the target building area corresponding to each pollution period is analyzed and obtained , u4 represents the total number of positions, q is the total number of time points, It is the noise propagation influence coefficient corresponding to the predefined unit wind speed level.

[0090] It should be noted that, because u1, u2, u3 and u4 are numbered in sequence, u4 represents both the north direction and the total direction number.

[0091] In one possible design, the type of noise source activity causing the target building area is determined by the following specific determination process:

[0092] The reference area range of the target building area corresponding to the noise source is further divided into sub-areas according to the preset area range, and the noise decibel value of each sub-area within the reference area range of the target building area corresponding to the noise source is obtained by using the noise sensing system, and the noise decibel values ​​of each sub-area within the reference area range of the target building area corresponding to the noise source are arranged in descending order, thereby screening out the sub-area within the reference area range of the target building area corresponding to the noise source corresponding to the maximum noise decibel value, and marking it as the reference sub-area;

[0093] The noise decibel value of the reference sub-area of ​​the reference area range of the noise source corresponding to the target building area is compared with the predefined reference noise value set corresponding to each noise source activity type, thereby obtaining the noise source activity type of the reference area range of the noise source corresponding to the target building area, wherein the noise source activity type includes industrial noise sources and building noise sources, and the noise source activity type of the reference area range of the noise source corresponding to the target building area is marked as the noise source activity type of the target building area.

[0094] The noise pollution control module performs noise emission control on the noise sources corresponding to the target building area.

[0095] In a possible design, the noise emission control is performed on the noise source corresponding to the target building area, and the specific control process is as follows:

[0096] If the noise source activity type in the target building area is identified as an industrial noise source, industrial restriction management will be carried out on all industrial enterprises within the reference area of ​​the target building area corresponding to the noise source;

[0097] If the noise source activity type in the target building area is identified as a traffic noise source, road restriction management will be performed on each road within the reference area corresponding to the noise source in the target building area.

[0098] It should be added that industrial restriction management is carried out on each industrial enterprise within the reference area of ​​the target building area corresponding to the noise source. The specific management process is as follows:

[0099] Obtain the work schedule of each industrial enterprise for each future day, and extract the estimated completion progress of each equipment that needs to be started and the start-up noise of each equipment that needs to be started corresponding to each industrial enterprise for each future day from the work schedule of each industrial enterprise for each future day;

[0100] The start-up noise of each equipment that needs to be started is summed to obtain the total start-up noise value of each industrial enterprise on each future day. If the total start-up noise value of an industrial enterprise on a future day is less than or equal to the defined industrial permitted noise value, then the industrial enterprise is permitted to start all the equipment that needs to be started on that future day. If the total start-up noise value of an industrial enterprise on a future day is greater than the predefined industrial permitted noise value, then the estimated completion progress of each equipment that needs to be started is arranged in descending order, and the name of the equipment that needs to be started that ranks first is selected, and the name of the equipment that needs to be started that ranks first is started first, and the start-up noise of the equipment that needs to be started that ranks first is obtained, and the defined industrial permitted noise value is compared with the first equipment that needs to be started. The difference between the start-up noise of the equipment name and the start-up noise of the equipment that needs to be started is calculated to obtain the remaining difference except the start-up noise of the first-ranked equipment, and the difference is compared with the start-up noise of other equipment that needs to be started, and then other equipment that needs to be started that is less than or equal to the remaining difference except the start-up noise of the first-ranked equipment is screened out, and they are marked as alternative second equipment. The estimated completion progress of each alternative second equipment is arranged in descending order, thereby selecting the first-ranked alternative second equipment to be started together with the first-ranked equipment that needs to be started, and eliminating it, and then using this screening method to carry out industrial restriction management on various industrial enterprises within the reference area of ​​the noise source corresponding to the target building area.

[0101] It should be added that road restriction management is carried out on each road within the reference area of ​​the target building area corresponding to the noise source. The specific management process is as follows:

[0102] The traffic volume of each road on each historical day is obtained, and the historical days with the same date are combined into a historical day set, thereby obtaining the traffic volume of each road corresponding to each historical day set, and the sum and average are calculated to obtain the average traffic volume of each road on each historical day, and it is used as the average traffic volume of each road on the future day with the same date as each historical day. If the average traffic volume of a road on the future day with the same date as a historical day is greater than the predefined road traffic volume average, the future day corresponding to the road is marked as a reference future day, and road restriction management is performed on each road corresponding to each reference future day.

[0103] The geographic information monitoring system based on the intelligent mobile terminal provided by the present invention collects urban geographic area data based on the GIS system embedded in the intelligent mobile terminal, and performs data cleaning processing on the collected urban geographic area data, and then analyzes the total received noise value corresponding to each time period of the target building area, thereby screening out the target building area corresponding to each noise pollution time period, and tracing the noise pollution source of the target building area, and then determining the type of noise source activity that causes the target building area, and further controlling the noise emission of the noise source corresponding to the target building area, accurately understanding the specific situation and impact range of the noise source, ensuring the implementation of effective management, ensuring the completeness of monitoring and evaluation of urban noise source tracing management, and the comprehensiveness of management measures, and improving technical innovation and coordination and other issues and drawbacks.

[0104] The above contents are merely examples and explanations of the concept of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. The geographic information monitoring system based on intelligent mobile terminals is characterized by: The system includes: Geographic data processing module: collects urban geographic area data based on the GIS system embedded in the smart mobile terminal, and performs data cleaning on the collected urban geographic area data; The urban geographic area data specifically includes the noise amplitude, noise frequency, noise phase and noise spectrum of the target building area corresponding to each time period and the noise signal value and noise intensity value corresponding to each time point; The collected urban geographic information data is cleaned and processed as follows: Obtain the noise spectrum of the target building area corresponding to each time period , i represents the number of the time period, i=1,2,...w, f represents the frequency index; By integrating the formula , calculate the noise power spectrum density of the target building area corresponding to each time period ,in, The symbol indicates the module; Extract the noise frequency of the target building area corresponding to each time period, compare it with the noise power spectrum density of the target building area corresponding to each time period, and then obtain the preliminary analysis noise type of the target building area corresponding to each time period, among which the noise type is divided into uniform noise, Gaussian noise and other noise; According to the noise signal value at each time point in each period of the target building area , j represents the number of each time point, j=1,2...q, and the mean, variance, deviation and kurtosis are calculated respectively, thereby respectively calculating the mean, variance, deviation and kurtosis of the noise signal in the target building area corresponding to each time period, and then drawing the noise signal distribution map of the target building area corresponding to each time period; And according to the noise signal distribution map of the target building area corresponding to each time period, the in-depth analysis noise type of the target building area corresponding to each time period is further obtained, and finally the noise type of the target building area corresponding to each time period is obtained by comparison; Noise area analysis module: Analyze the total received noise value of the target building area corresponding to each time period, thereby screening out the target building area corresponding to each noise pollution period, and marking it as the target building area corresponding to each pollution period; Pollution source tracing analysis module: trace the noise pollution source of the target building area, and then determine the type of noise source activity that causes the target building area; The specific tracing process of noise pollution source tracing in the target building area is as follows: Deploy sound source locators in all directions of the target building area, and set a unified start time for the sound source locators corresponding to each direction, so as to receive the receiving time points of each noise source corresponding to each direction of the target building area. , c represents the number of each noise source, c=1,2,...p, u represents the number of each direction, u=u1,u2,u3 and u4, where u1,u2,u3 and u4 represent the east, south, west and north directions respectively; The wind speed and wind direction at each time point in the target building area corresponding to each pollution period are obtained, and the wind impact noise propagation assessment coefficient of the target building area corresponding to each pollution period is further obtained. , b represents the number of each pollution period, b=1,2,...d; The receiving time points of each noise source received in each direction of the target building area are subtracted and averaged in turn to obtain the average time difference of the noise source received in each direction of the target building area. ; The sound reference speed corresponding to the predefined unit duration , and then calculate the reference distance of the noise source corresponding to each direction of the target building area , d represents the total number of pollution periods; The position of the sound source locator arranged in each direction of the target building area is taken as the center of the circle, and the reference distance of the noise source corresponding to each direction of the target building area is taken as the radius, thereby constructing the noise area range corresponding to the noise source in each direction of the target building area, and performing an intersection operation on them to obtain the reference area range corresponding to the noise source in the target building area; The specific process of obtaining the wind impact noise propagation assessment coefficient of the target building area corresponding to each pollution period is as follows: According to the wind direction of the target building area at each time point in each pollution period, a keyword set of wind direction of the target building area at each time point in each pollution period is formed. , and simultaneously form a set of location keywords corresponding to each location of the target building area , and then according to the analytical formula , the wind direction text similarity coefficients of the target building area corresponding to each pollution period and each time point in each direction are analyzed and obtained. , and mark it as the wind direction influence coefficient at each time point in each pollution period corresponding to each direction of the target building area; According to the wind speed at each time point in each pollution period corresponding to the target building area, it is compared with the wind speed set corresponding to each predefined wind speed level to obtain the wind speed level at each time point in each pollution period corresponding to the target building area. ; According to the analysis formula , the wind impact noise transmission assessment coefficient of the target building area corresponding to each pollution period is analyzed and obtained , u4 represents the total number of positions, q is the total number of time points, is the noise propagation influence coefficient corresponding to the predefined unit wind speed level; The specific process of determining the type of noise source activity that causes the target building area is as follows: The reference area range of the target building area corresponding to the noise source is further divided into sub-areas according to a preset area range, and the noise decibel value of each sub-area within the reference area range of the target building area corresponding to the noise source is obtained by using a noise sensing system, and the noise decibel values ​​of each sub-area within the reference area range of the target building area corresponding to the noise source are arranged in descending order, thereby screening out the sub-area within the reference area range of the target building area corresponding to the noise source corresponding to the maximum noise decibel value, and marking it as a reference sub-area; The noise decibel value of the reference sub-area of ​​the reference area range corresponding to the noise source of the target building area is compared with the predefined reference noise value set corresponding to each noise source activity type, thereby obtaining the noise source activity type of the reference area range corresponding to the noise source of the target building area, wherein the noise source activity type includes industrial noise source and building noise source, and the noise source activity type of the reference area range corresponding to the noise source of the target building area is marked as the noise source activity type of the target building area; Noise pollution control module: control noise emissions from corresponding noise sources in the target building area.

2. The geographic information monitoring system based on the intelligent mobile terminal according to claim 1 is characterized in that: The total received noise value corresponding to each time period in the target building area is analyzed, and the specific analysis process is as follows: According to the noise intensity value of each time point in each time period corresponding to the target building area, it is compared with the set of noise intensity values ​​corresponding to each set of noise intensity levels, and the noise intensity level of each time point in each time period corresponding to the target building area is further obtained. The intersection operation is performed to obtain the noise intensity level corresponding to the most time points as the noise intensity level of the target building area corresponding to each time period; Obtain the noise amplitude of the target building area at each time period , Noise frequency , noise phase ,pass Calculate the total received noise value of the target building area for each time period , e represents a natural constant, Represents the noise intensity level of the target building area corresponding to the i-th time period.

3. The geographic information monitoring system based on the intelligent mobile terminal according to claim 1 is characterized in that: The target building area is screened out to correspond to each noise pollution period, and the specific screening process is as follows: The total receiving noise value of the target building area corresponding to each time period is compared with the predefined permitted receiving noise value corresponding to each time period. If the total receiving noise value of the target building area corresponding to a certain time period is greater than the predefined permitted receiving noise value corresponding to each time period, the time period is marked as a noise pollution time period, thereby screening out the noise pollution time periods corresponding to the target building area.

4. The geographic information monitoring system based on the intelligent mobile terminal according to claim 1 is characterized in that: The noise emission control of the noise source corresponding to the target building area is carried out, and the specific control process is as follows: If the noise source activity type in the target building area is identified as an industrial noise source, industrial restriction management will be carried out on all industrial enterprises within the reference area of ​​the target building area corresponding to the noise source; If the noise source activity type in the target building area is identified as a traffic noise source, road restriction management will be implemented on each road within the reference area corresponding to the noise source in the target building area.

Images