CN107576598B - Method for acquiring quality of atmospheric particulate matter and terminal - Google Patents
Method for acquiring quality of atmospheric particulate matter and terminal Download PDFInfo
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- CN107576598B CN107576598B CN201710844627.9A CN201710844627A CN107576598B CN 107576598 B CN107576598 B CN 107576598B CN 201710844627 A CN201710844627 A CN 201710844627A CN 107576598 B CN107576598 B CN 107576598B
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Abstract
The embodiment of the application discloses an obtaining method and a terminal of the mass of atmospheric particulates, which are used for filtering the mass of liquid water attached to the atmospheric particulates due to the absorption of water vapor of the environment so as to obtain the actual total mass of the atmospheric particulates within a preset time interval. The method in the embodiment of the application comprises the following steps: the method comprises the steps that a terminal obtains a first set of atmospheric particulate particle sizes collected by monitoring equipment in a preset time interval, calculates the atmospheric particulate particle sizes in the first set according to a first preset algorithm to obtain target atmospheric particulate particle sizes, and obtains a second set of the target atmospheric particulate particle sizes; then, the terminal calculates the actual mass of the atmospheric particulates according to a second preset algorithm and the target particle size of the atmospheric particulates, and obtains a third set of the actual mass of the atmospheric particulates; and finally, the terminal calculates the actual mass of the atmospheric particulates in the third set to obtain the actual total mass of the atmospheric particulates in the preset time interval.
Description
Technical Field
The application relates to the field of environmental monitoring, in particular to an obtaining method and a terminal for quality of atmospheric particulate matter.
Background
Particulate matter in the atmosphere (also referred to as aerosol, or simply, atmospheric particulate matter) is ubiquitous in nature and in everyday life, such as dust, bacteria, haze, smoke, and the like. The sources of the atmospheric particulates can be divided into natural sources and artificial sources, wherein the natural sources comprise ground dust, volcanic ash released by volcanic eruption, sand storm and the like, and the artificial sources comprise smoke generated by burning various fuels, material particles emitted by industrial production, automobile exhaust and the like. Most of the atmospheric particles suspended in the atmosphere are formed in various industrial and agricultural production processes. The aerodynamic equivalent diameters (also referred to as particle sizes) of the different atmospheric particulates are also different, with particles having a particle size of less than 100 μm being referred to as Total Suspended Particulates (TSP), particles having a particle size of less than 10 μm being referred to as respirable particulates, denoted as PM10, and particles having a particle size of less than 2.5 μm being referred to as respirable particulates, denoted as PM 2.5. The smaller the particle size of the atmospheric particulates, the greater the impact on the health. With the progress of society and the improvement of living standard, people pay more and more attention to environmental problems, and atmospheric particulates are also important factors influencing the environment and have important influences on atmospheric visibility, human health, global climate and the like, so that measurement of atmospheric particulates becomes important contents of environmental protection, disease prevention and the like.
The monitoring device based on the measurement methods such as a filter weighing method, a piezoelectric crystal method, a micro-oscillation balance method or an β ray absorption method can directly measure the mass of the atmospheric particulates in the air by sampling at a specified flow rate, weighing the mass of the filter before and after the filter is dried and obtaining the mass of the trapped atmospheric particulates from the mass difference, wherein the mass concentration of the atmospheric particulates is obtained as the ratio of the mass to the air amount sampled.
However, the particle size of the atmospheric particulates measured by the monitoring device based on the light scattering method is the particle size of the atmospheric particulates which absorb water vapor in the atmospheric environment, and the particle size increases as the particle size absorbs water vapor in the atmospheric environment, so that the particle size of the atmospheric particulates is larger than the target particle size corresponding to the actual mass of the atmospheric particulates, and the mass of the atmospheric particulates calculated by the light scattering method is in positive correlation with the particle size of the atmospheric particulates, so that the mass of the atmospheric particulates calculated by the method includes both the actual mass of the atmospheric particulates and the mass (also referred to as additional mass) of liquid water added by the atmospheric particulates due to the absorption of water vapor in the environment, and the finally calculated total mass of the atmospheric particulates in the preset time interval is larger than the actual total mass of the atmospheric particulates, and an error exists.
Disclosure of Invention
The embodiment of the application provides an obtaining method and a terminal of the mass of atmospheric particulates, which are used for filtering the mass of liquid water attached to the atmospheric particulates due to the absorption of water vapor of the environment so as to obtain the actual total mass of the atmospheric particulates within a preset time interval.
The specific technical scheme comprises the following steps:
the application provides a method for obtaining the mass of atmospheric particulate matter, which comprises the following steps:
the method comprises the steps that a terminal obtains a first set of atmospheric particulate particle sizes, the atmospheric particulate particle sizes are obtained by collecting the atmospheric particulate particles in a preset time interval through monitoring equipment, the atmospheric particulate particle sizes are the particle sizes of the atmospheric particulate particles after atmospheric environment water vapor is absorbed at a monitoring point, and the monitoring point is the position of the monitoring equipment;
the terminal calculates the target particle size of the atmospheric particulates in the first set according to a first preset algorithm to obtain a second set of the target particle size of the atmospheric particulates, wherein the target particle size of the atmospheric particulates is the particle size of the atmospheric particulates after being dried;
the terminal calculates the actual mass of the atmospheric particulates according to a second preset algorithm by the target particle size of the atmospheric particulates, and obtains a third set of the actual mass of the atmospheric particulates;
and the terminal calculates the actual mass of the atmospheric particulates in the third set to obtain the actual total mass of the atmospheric particulates in the preset time interval.
Optionally, the calculating, by the terminal, the target particle size of the atmospheric particulates from the particle sizes of the atmospheric particulates in the first set according to a first preset algorithm includes:
the terminal is based on a calculation formula
Calculating to obtain the target particle size of the atmospheric particulates, wherein D is the particle size of the atmospheric particulates, and DdryThe target particle size of the atmospheric particulate matter is obtained, RH is the atmospheric environment relative humidity of the monitoring point obtained by the terminal,
κiis a moisture absorption constant corresponding to the atmospheric particulate component i, n is a type value of the atmospheric particulate component, M is a target atmospheric particulate mass collected in a preset target time interval, the preset target time interval is a subset of the preset time interval, M is a total mass of the atmospheric particulate componentiIs the mass of the atmospheric particulate component i corresponding to the M.
Optionally, the calculating, by the terminal according to a second preset algorithm, the actual mass of the atmospheric particulates according to the target particle size of the atmospheric particulates includes:
the terminal is based on a calculation formula
Calculating to obtain the actual mass of the atmospheric particulates, wherein Mdryρ is the density of the atmospheric particulates, which is the actual mass of the atmospheric particulates.
Alternatively, ρ comprises 1.6g/cm-3。
The present application also provides a terminal, which includes:
the device comprises a first acquisition unit, a second acquisition unit and a monitoring unit, wherein the first acquisition unit is used for acquiring a first set of atmospheric particulate particle sizes, the atmospheric particulate particle sizes are acquired by monitoring equipment within a preset time interval, the atmospheric particulate particle sizes are the particle sizes of atmospheric particulate particles after atmospheric environment water vapor is absorbed at a monitoring point, and the monitoring point is the position of the monitoring equipment;
the first arithmetic unit is used for calculating the target particle size of the atmospheric particulates in the first set according to a first preset algorithm, wherein the target particle size of the atmospheric particulates is the particle size of the atmospheric particulates after being dried;
a second acquisition unit for acquiring a second set of the target particle sizes of the atmospheric particulates;
the second operation unit is used for calculating the actual mass of the atmospheric particulates according to a second preset algorithm and the target particle size of the atmospheric particulates;
a third acquisition unit for acquiring a third set of actual mass of atmospheric particulates;
and the third operation unit is used for performing summation operation on the actual mass of the atmospheric particulates in the third set to obtain the actual total mass of the atmospheric particulates in the preset time interval.
Optionally, the first arithmetic unit includes:
a first operation subunit for calculating formula
Calculating to obtain the target particle size of the atmospheric particulates, wherein D is the particle size of the atmospheric particulates, and DdryThe target particle size of the atmospheric particulate matter is obtained, RH is the atmospheric environment relative humidity of the monitoring point obtained by the terminal,
κiis a moisture absorption constant corresponding to the atmospheric particulate component i, n is a type value of the atmospheric particulate component, M is a target atmospheric particulate mass collected in a preset target time interval, the preset target time interval is a subset of the preset time interval, M is a total mass of the atmospheric particulate componentiIs the mass of the atmospheric particulate component i corresponding to the M.
Optionally, the second operation unit includes:
a second operation subunit for calculating formula
Calculating to obtain the actual mass of the atmospheric particulates, wherein MdryFor the actual mass of the atmospheric particulates, p is the atmospheric particulate density.
In addition, the present application also provides a terminal, including:
the system comprises a processor, a memory, a bus and an input/output interface, wherein the processor, the memory and the input/output interface are connected through the bus; the memory is stored with a program code, and the program code is used for storing an operation instruction; the processor is configured to execute the steps that the terminal needs to execute in any of the methods in the embodiments of the present application when calling the program code in the memory.
The present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the steps of any of the methods of the embodiments of the present application.
The present application further provides a computer-readable storage medium, which is to be construed as a part of the technical solution of the present application that essentially contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product stored in a storage medium for storing computer software instructions for the related devices, which instructions, when executed on a computer, cause the computer to perform the steps of any one of the methods in the embodiments of the present application.
The storage medium may be a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and the like, and is not limited herein.
According to the technical scheme, the embodiment of the application has the following advantages:
the method comprises the steps that a terminal obtains a first set of atmospheric particulate particle sizes acquired by monitoring equipment in a preset time interval, the atmospheric particulate particle sizes in the first set are calculated according to a first preset algorithm to obtain an atmospheric particulate target particle size, then the atmospheric particulate target particle sizes in a second set are calculated according to a second preset algorithm to obtain an atmospheric particulate actual mass, and finally the atmospheric particulate actual mass in a third set is calculated to obtain an atmospheric particulate actual total mass in the preset time interval. According to the embodiment of the application, firstly, according to a first preset algorithm, the target atmospheric particulate matter particle size is obtained through the atmospheric particulate matter particle size monitored by monitoring equipment, then according to a second preset algorithm, the actual atmospheric particulate matter mass is obtained through the target atmospheric particulate matter particle size, finally, the actual total atmospheric particulate matter mass in a preset time interval is obtained through operation on the actual atmospheric particulate matter mass in a third set, the mass of liquid water attached to the atmospheric particulate matter due to absorption of water vapor of the environment is filtered according to the second preset algorithm and the actual total atmospheric particulate matter mass obtained through summation operation, and errors between the total atmospheric particulate matter mass and the actual total atmospheric particulate matter mass are eliminated.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a method for obtaining the amount of atmospheric particulate matter in the embodiment of the present application;
FIG. 2 is a schematic diagram of another embodiment of a method for obtaining the amount of atmospheric particulate matter in the embodiment of the present application;
FIG. 3 is a schematic diagram of an embodiment of a terminal in an embodiment of the application;
fig. 4 is a schematic diagram of another embodiment of the terminal in the embodiment of the present application;
fig. 5 is a schematic diagram of another embodiment of the terminal in the embodiment of the present application.
Detailed Description
The embodiment of the application discloses an obtaining method and a terminal of the mass of atmospheric particulates, which are used for filtering the mass of liquid water attached to the atmospheric particulates due to the absorption of water vapor of the environment so as to obtain the actual total mass of the atmospheric particulates within a preset time interval.
For ease of understanding, the following description will be made on a specific flow in the embodiment of the present application, and referring to fig. 1, an embodiment of the method for obtaining the amount of atmospheric particulate matter in the embodiment of the present application includes:
101. the method comprises the steps that a terminal obtains a first set of particle sizes of atmospheric particulates;
the monitoring equipment arranged at the monitoring point collects the particle size of the atmospheric particulates within a preset time interval, and the collected particle size of the atmospheric particulates is the particle size of the atmospheric particulates after the atmospheric environment water vapor is absorbed at the monitoring point. The preset time interval can be selected by the monitoring device according to the requirement in the maximum monitoring duration when the monitoring device continuously works, for example, if the monitoring device can continuously work for up to 3 months at most, any time interval from the time when the monitoring device starts to work to 3 months after the start of work can be selected as the preset time interval according to the requirement, 1 day can be selected as the preset time interval, or 1 month can be selected as the preset time interval, and the specific point is not limited here. After the preset time interval is selected as required, the terminal acquires a first set of atmospheric particulate particle sizes within the preset time interval from the monitoring device.
It should be noted that, in the embodiment of the present application, the monitoring process of the monitoring device on the particle size of the atmospheric particulate matter may be: the monitoring device collects the particle size of the atmospheric particulates in the monitoring environment in real time, the collected particle size of the atmospheric particulates is distributed to different preset particle size intervals and counted, when the preset time interval is reached, the monitoring device conducts arithmetic average operation on the particle size of the atmospheric particulates belonging to the different particle size intervals to obtain an average particle size of the atmospheric particulates in the particle size interval, and the average particle size of the atmospheric particulates is the particle size of the atmospheric particulates belonging to the particle size interval. Taking a monitoring device for monitoring PM2.5 as an example, assuming that the number of particle size intervals preset by the monitoring device is 5, the 5 particle size intervals are respectively 0.3 μm to 0.8 μm, 0.8 μm to 1.2 μm, 1.2 μm to 1.6 μm, 1.6 μm to 2.0 μm, and 2.0 μm to 2.5 μm, and are respectively marked as particle size interval 1, particle size interval 2, particle size interval 3, particle size interval 4, and particle size interval 5. If the monitoring device is set to require a day of acquisition 9: 00 to 10: 00, then at the monitoring device at 9: 00, when the monitoring device starts to work, the monitoring device starts to acquire the size of the particle size of the atmospheric particles in real time until the monitoring device is in a state that 10: and when the particle size is 00, stopping working, and assuming that the monitoring equipment acquires 100 atmospheric particulate particle sizes in the particle size interval 1, performing arithmetic average operation on the 100 acquired atmospheric particulate particle sizes by the monitoring equipment to obtain the atmospheric particulate particle size in the particle size interval 1, wherein the atmospheric particulate particle size in the particle size interval 1 can be marked as the atmospheric particulate particle size 1, and similarly, the atmospheric particulate particle sizes in the particle size interval 2 to the particle size area 5 can be respectively calculated to obtain the atmospheric particulate particle sizes 2 to 5. Then, the atmospheric particulates particles sizes 1 through 5 constitute a first set of atmospheric particulates particle sizes. In addition to the above-described monitoring process, the monitoring process of the monitoring device may be: the monitoring device obtains an atmospheric particulate particle size distribution function of atmospheric particulate particle sizes in relation to a time interval in a preset time interval, then the preset time interval is divided into a plurality of continuous small time intervals, the atmospheric particulate particle size distribution function corresponding to the small time intervals is operated in each small time interval, and the atmospheric particulate particle sizes corresponding to the small time intervals are obtained. In summary, the monitoring device may have a plurality of monitoring modes for the particle size of the atmospheric particulates, and the monitoring mode is not limited herein.
102. The terminal calculates the target particle size of the atmospheric particulates according to a first preset algorithm;
after the terminal acquires the first set of the atmospheric particulate particle sizes collected by the monitoring device, the atmospheric particulate particle sizes are calculated according to a first preset algorithm to obtain the target atmospheric particulate particle sizes, wherein the target atmospheric particulate particle sizes are the particle sizes of the atmospheric particulate particles collected by the monitoring device in the step 101 after being dried. In this embodiment, the terminal may directly calculate the target atmospheric particulate particle size according to a first preset algorithm from the atmospheric particulate particle size, or may first obtain one or more intermediate parameters according to the first preset algorithm, and then obtain the target atmospheric particulate particle size through calculation of the intermediate parameters, where a manner of obtaining the target atmospheric particulate particle size by the terminal is specifically determined by the first preset algorithm, and is not specifically limited herein.
103. The terminal obtains a second set of target particle sizes of the atmospheric particulates;
and the terminal calculates the target particle size of the atmospheric particulates according to a first preset algorithm, and the target particle size of the atmospheric particulates forms a second set.
104. The terminal calculates the actual mass of the atmospheric particulates according to a second preset algorithm and the target particle size of the atmospheric particulates;
after the terminal acquires the second set of the target particle sizes of the atmospheric particulates collected by the monitoring equipment, the target particle sizes of the atmospheric particulates are calculated according to a second preset algorithm, and the actual quality of the atmospheric particulates is obtained. In this embodiment, the terminal may directly calculate the actual mass of the atmospheric particulates from the target particle size of the atmospheric particulates according to a second preset algorithm, or may first obtain one or more intermediate parameters according to the second preset algorithm, and then obtain the actual mass of the atmospheric particulates through calculation of the intermediate parameters, where a manner of obtaining the actual mass of the atmospheric particulates by the terminal is specifically determined by the second preset algorithm, and is not specifically limited herein.
105. The terminal obtains a third set of actual mass of the atmospheric particulates;
and the terminal calculates the actual mass of the atmospheric particulates according to a second preset algorithm and the target particle size of the atmospheric particulates, and the actual mass of the atmospheric particulates forms a third set.
106. And the terminal calculates the actual mass of the atmospheric particulates in the third set to obtain the actual total mass of the atmospheric particulates.
And after the terminal acquires the third set of the actual mass of the atmospheric particulates, calculating the actual mass of the atmospheric particulates to obtain the actual total mass of the atmospheric particulates. The terminal can perform summation operation on the actual mass of the atmospheric particulates in the third set to obtain the actual total mass of the atmospheric particulates; in addition, the terminal can also perform weighting operation on the actual mass of the atmospheric particulates to obtain the actual total mass of the atmospheric particulates, and the specific operation mode is not limited here.
In the embodiment of the application, the terminal obtains a first set of atmospheric particulate particle sizes acquired by the monitoring device within a preset time interval, calculates the atmospheric particulate particle size in the first set according to a first preset algorithm to obtain an atmospheric particulate target particle size, calculates the atmospheric particulate target particle size in a second set according to a second preset algorithm to obtain an atmospheric particulate actual mass, and finally calculates the atmospheric particulate actual mass in a third set to obtain an atmospheric particulate actual total mass within the preset time interval. According to the embodiment of the application, firstly, according to a first preset algorithm, the target atmospheric particulate matter particle size is obtained through the atmospheric particulate matter particle size monitored by monitoring equipment, then according to a second preset algorithm, the actual atmospheric particulate matter mass is obtained through the target atmospheric particulate matter particle size, finally, the actual total atmospheric particulate matter mass in a preset time interval is obtained through operation, the mass of liquid water attached to the atmospheric particulate matter due to the fact that the atmospheric particulate matter absorbs water vapor of the environment is filtered according to the second preset algorithm and the actual total atmospheric particulate matter mass obtained through operation on a third set, and errors between the total atmospheric particulate matter mass and the actual total atmospheric particulate matter mass are eliminated.
To further understand how the terminal calculates the actual mass of the atmospheric particulates according to the first preset algorithm and the second preset algorithm, a detailed description is provided below for a specific process in the embodiment of the present application, with reference to fig. 2 in particular, another embodiment of the method for obtaining the mass of the atmospheric particulates in the embodiment of the present application includes:
201. the method comprises the steps that a terminal obtains a first set of particle sizes of atmospheric particulates;
in this embodiment, step 201 is similar to step 101 in the embodiment shown in fig. 1, and detailed description thereof is omitted here.
202. The terminal is according to the calculation formula
Calculating to obtain the target particle size of the atmospheric particulates;
the terminal is according to the calculation formula
Calculating to obtain the target particle size of the atmospheric particulates, wherein D is the particle size of the atmospheric particulates, and DdryFor the target particle size of the atmospheric particulates, RH is the atmospheric environment relative humidity of the monitoring point obtained by the terminal, and RH can be monitored by an integrated monitoring atmospheric ringThe monitoring device of the sensor of the ambient relative humidity is used for monitoring the relative humidity of the atmospheric environment within a preset time interval to obtain the ambient relative humidity, and can also be used for monitoring the relative humidity of the atmospheric environment by simultaneously setting a monitoring instrument for monitoring the ambient humidity at a monitoring point where the monitoring device is located, and the monitoring instrument is not limited in particular. After the monitoring equipment acquires the atmospheric environment relative humidity, the monitoring equipment can send the acquired atmospheric environment relative humidity to the terminal through the communication module of the monitoring equipment, the acquired atmospheric environment relative humidity can also be uploaded to the cloud platform corresponding to the monitoring equipment, the terminal downloads the atmospheric environment relative humidity from the cloud platform, and the mode that the terminal acquires the atmospheric environment relative humidity is not limited here.
It should be noted that, a single atmospheric particulate matter is not only composed of one component, and is generally composed of multiple components, and various components in the atmospheric particulate matter are generally mixed internally, that is, a single atmospheric particulate matter generally contains organic components and various inorganic components in similar proportions at the same time, in a preset time interval, the atmospheric particulate matter in the preset time interval or the target atmospheric particulate matter in the preset target time interval may be obtained by a monitoring device integrated with a module capable of obtaining the atmospheric particulate matter, or the atmospheric particulate matter in the preset time interval or the target atmospheric particulate matter in the preset target time interval may be obtained by setting an instrument for obtaining the atmospheric particulate matter at a monitoring point where the monitoring device is located, and specific details are not limited herein. It should be noted that the preset target time interval is a subset of the preset time interval, and since a single atmospheric particulate matter generally contains organic matter components and various inorganic matter components in similar proportions at the same time, the target atmospheric particulate matter obtained in the preset target time interval or the atmospheric particulate matter obtained in the preset time interval has the same atmospheric particulate matter component type value and the mass percentage of the atmospheric particulate matter component i. After the target atmospheric particulate matter is obtained, the particulate matter is passedAnd analyzing the components of the obtained target atmospheric particulates by a spectrometer or other instruments capable of analyzing the components of the atmospheric particulates to obtain the component composition of the atmospheric particulates and the mass corresponding to each component of the target atmospheric particulates. For example, assuming that a monitoring device integrating a sensor for monitoring the relative humidity of the atmospheric environment is arranged at a monitoring point, the monitoring device is a monitoring device for monitoring PM2.5, and in 2017, the monitoring device is set to operate at 0: 00 to 24: 00, monitoring that the atmospheric environment humidity in the time interval is 35% and sending the atmospheric environment humidity to a terminal through a communication module of the atmospheric environment humidity, and simultaneously, setting an instrument for acquiring atmospheric particulates at a monitoring point where monitoring equipment is located, wherein the instrument is set to acquire 2017, 5, month and 15 days 9: 00 to 12: 00, then carrying out component analysis and component mass ratio measurement on the collected target atmospheric particulate matters by a particulate matter mass spectrometer, wherein the components of the target atmospheric particulate matters are organic particulate matters, ammonium sulfate particulate matters and ammonium nitrate particulate matters through the analysis and measurement of the particulate matter mass spectrometer, so that n is 3, the mass of the target atmospheric particulate matters is measured to be M is 12.6 mu g, and the mass of the corresponding organic particulate matters is assumed to be M1The mass of the ammonium sulfate particles is recorded as M2The mass of the ammonium nitrate granules is recorded as M3Measured, M1＝3.2μg，M2＝5.4μg，M34.0 μ g, for organic particulates, κ10.1; for the common atmospheric particulate constituents ammonium sulfate and ammonium nitrate, κ is about 0.6, thus for ammonium sulfate, κ20.6 for ammonium nitrate, κ3Each value obtained as described above is substituted into 0.6
To obtain
In the preset time interval, the monitoring device10 particle sizes of atmospheric particulates, respectively marked as D, were obtained according to the monitoring process described in step 10111、D21、D31、D41、D51、D61、D71、D81、D91、D101And the 10 atmospheric particulates are sent to the terminal through the communication module of the terminal, and the terminal sets the RH to 35 percent according to the formula,
substituting, respectively calculating to obtain 10 target particle diameters of the atmospheric particulates corresponding to the particle diameters of the atmospheric particulates, and respectively recording as Ddry11、Ddry21、Ddry31、Ddry41、Ddry51、Ddry61、Ddry71、Ddry81、Ddry91、Ddry101。
In addition, it should be noted that, the atmospheric particulate matter components at the monitoring point generally do not change much at similar times in the past year, and if the target atmospheric particulate matter is not obtained as described above, the calculation may be performed according to the atmospheric particulate matter components obtained at the monitoring point at similar times in the past year; it is understood that, in practical applications, if the target atmospheric particulate matter is not obtained as described above, the atmospheric particulate matter may also be obtained a period of time after a preset time interval, for example, assuming that a monitoring device arranged at a certain monitoring point monitors the target atmospheric particulate matter by monitoring the target atmospheric particulate: 00 to 24: 00, but the target atmospheric particulates at the monitoring point are not acquired in the target time interval in the time interval, the calculation may be performed by selecting the atmospheric particulate related data acquired in about 2016, 7, and 10 and subjected to the composition analysis, or the 0 acquired in 2017, 07, 11 or 12: 00 to 24: 00, performing component analysis and mass proportion analysis on the obtained atmospheric particulates within any time interval, wherein the specific point is not limited here.
203. The terminal obtains a second set of target particle sizes of the atmospheric particulates;
after the terminal obtains the target particle size of the atmospheric particulates, the target particle size of the atmospheric particulates within the preset time interval forms a second set, for example, taking the second example in step 202 as an example, Ddry11、Ddry21、Ddry31、Ddry41、Ddry51、Ddry61、Ddry71、Ddry81、Ddry91、Ddry101A second set of target particle sizes of atmospheric particulates is formed.
204. The terminal is according to the calculation formulaCalculating to obtain the actual mass of the atmospheric particulates;
the terminal is according to the calculation formula
Calculating to obtain the actual mass of the atmospheric particulates, wherein MdryAnd p is the actual mass of the atmospheric particulate matter, and is the density of the atmospheric particulate matter.
It should be noted that, the components of the atmospheric particulates in different regions and climates are different, the density of the atmospheric particulates is slightly different, and the atmospheric particulate density is generally 1.6g/cm by performing statistical analysis on the components and the quality of the atmospheric particulates obtained in most regions and climates-3However, it should be noted that if an accurate atmospheric particulate matter density in a certain area or under a certain climate condition needs to be obtained, the value of the atmospheric particulate matter density needs to be obtained by obtaining the atmospheric particulate matter density in the certain area or under the certain climate condition and measuring the atmospheric particulate matter density by using a corresponding measuring instrument, which is not limited herein. Here again taking the second example in step 202 as an example, the terminal has already calculated the formula
Calculating to obtain 10 target particle diameters of atmospheric particulates, which are respectively Ddry11、Ddry21、Ddry31、Ddry41、Ddry51、Ddry61、Ddry71、Ddry81、Ddry91、Ddry101According to a calculation formula
And the density rho of the atmospheric particulates is taken as 1.6g/cm-3The terminal obtains the actual mass of 10 atmospheric particulates corresponding to the target particle size of the 10 atmospheric particulates, and the actual mass is respectively recorded as Mdry11、Mdry21、Mdry31、Mdry41、Mdry51、Mdry61、Mdry71、Mdry81、Mdry91、Mdry101。
205. The terminal obtains a third set of actual mass of the atmospheric particulates;
and after the terminal obtains the actual mass of the atmospheric particulates, the actual mass of the atmospheric particulates forms a third set. For example, taking the example shown in step 204 as an example, Mdry11、Mdry21、Mdry31、Mdry41、Mdry51、Mdry61、Mdry71、Mdry81、Mdry91、Mdry101A third set of actual masses of atmospheric particulates is formed.
206. And the terminal calculates the actual mass of the atmospheric particulates in the third set to obtain the actual total mass of the atmospheric particulates.
After the terminal acquires the third set of the actual mass of the atmospheric particulates, the actual mass of the atmospheric particulates in the third set is calculated to obtain the actual total mass of the atmospheric particulates, and the actual mass of the atmospheric particulates is in positive correlation with the actual total mass of the atmospheric particulates. The terminal may perform a summation operation on the actual masses of the atmospheric particulates in the third set to obtain an actual total mass of the atmospheric particulates, for example, taking the example shown in step 205, there are 10 actual masses of the atmospheric particulates in the third set, which are M respectivelydry11＝0.8μg、Mdry21＝0.7μg、Mdry31＝1.0μg、Mdry41＝0.4μg、Mdry51＝1.3μg、Mdry61＝1.3μg、Mdry71＝1.7μg、Mdry81＝2.0μg、Mdry91＝2.2μg、Mdry101Summing the mass of the 10 atmospheric particulates to obtain the actual total mass of the atmospheric particulates, wherein the actual total mass of the atmospheric particulates is 13.1 mug; the terminal can also perform weighting operation on the actual mass of the atmospheric particulates to obtain the actual total mass of the atmospheric particulates, and the specific operation mode is not limited here.
In the embodiment of the application, the terminal acquires a first set of atmospheric particulate particle sizes acquired by the monitoring equipment within a preset time interval, and calculates a formula
Calculating to obtain the target particle size of the atmospheric particulates, acquiring a second set of the target particle sizes of the atmospheric particulates, and then, the terminal further obtains the target particle size of the atmospheric particulates according to a calculation formula
And calculating to obtain the actual mass of the atmospheric particulates, and calculating the actual mass of the atmospheric particulates in the third set obtained in the preset time interval to obtain the actual total mass of the atmospheric particulates. According to a calculation formula
And the actual total mass of the atmospheric particulates obtained by the operation of the third set filters out the mass of liquid water added to the atmospheric particulates due to the absorption of water vapor of the environment, and eliminates the error between the total mass of the atmospheric particulates and the actual total mass of the atmospheric particulates.
Fig. 1 and fig. 2 illustrate a method for obtaining an amount of atmospheric particulate matter in an embodiment of the present application, and a related device in the embodiment of the present application is described below, where the related device includes a terminal, and specifically refer to fig. 3, where an embodiment of the terminal in the embodiment of the present application includes:
the first acquisition unit 301 is configured to acquire a first set of atmospheric particulate particle sizes, where the atmospheric particulate particle sizes are acquired by monitoring equipment within a preset time interval, and the atmospheric particulate particle sizes are obtained after atmospheric environmental water vapor is absorbed by atmospheric particulate particles at a monitoring point, where the monitoring equipment is located;
a first operation unit 302, configured to calculate, according to a first preset algorithm, an atmospheric particulate target particle size from the atmospheric particulate particle sizes in the first set, where the atmospheric particulate target particle size is a particle size of the atmospheric particulate after being dried;
a second obtaining unit 303, configured to obtain a second set of the target particle sizes of the atmospheric particulates;
the second operation unit 304 is configured to calculate an actual mass of the atmospheric particulates from the target particle size of the atmospheric particulates according to a second preset algorithm;
a third obtaining unit 305 for obtaining a third set of actual masses of atmospheric particulates;
a third operation unit 306, configured to perform summation operation on the actual mass of the atmospheric particulates in the third set to obtain an actual total mass of the atmospheric particulates within the preset time interval.
In this embodiment of the application, a first obtaining unit 301 obtains a first set of atmospheric particulate particle sizes collected by a monitoring device within a preset time interval, a first operation unit 302 calculates, according to a first preset algorithm, an atmospheric particulate particle size in the first set to obtain an atmospheric particulate target size, a second obtaining unit 303 obtains a second set of atmospheric particulate target sizes, a second operation unit 304 calculates, according to a second preset algorithm, an atmospheric particulate target size in the second set to obtain an atmospheric particulate actual mass, a third obtaining unit 305 obtains a third set of atmospheric particulate actual masses, and a third operation unit 306 operates the atmospheric particulate actual masses in the third set to obtain an atmospheric particulate actual total mass within the preset time interval. According to the embodiment of the application, firstly, according to a first preset algorithm, the target atmospheric particulate matter particle size is obtained through the atmospheric particulate matter particle size monitored by monitoring equipment, then according to a second preset algorithm, the actual atmospheric particulate matter mass is obtained through the target atmospheric particulate matter particle size, finally, the actual total atmospheric particulate matter mass in a preset time interval is obtained through operation, the mass of liquid water attached to the atmospheric particulate matter due to the fact that the atmospheric particulate matter absorbs water vapor of the environment is filtered according to the second preset algorithm and the actual total atmospheric particulate matter mass obtained through operation on a third set, and errors between the total atmospheric particulate matter mass and the actual total atmospheric particulate matter mass are eliminated.
To further understand how the terminal calculates the actual mass of the atmospheric particulates according to the first preset algorithm and the second preset algorithm, the first operation unit in the terminal includes a first operation subunit, and the second operation unit in the terminal includes a second operation subunit, with reference to fig. 4 in particular, an embodiment of the terminal in the present application includes:
a first acquisition unit 401, a first arithmetic unit 402, a second acquisition unit 403, a second arithmetic unit 404, a third acquisition unit 405, and a third arithmetic unit 406;
the first obtaining unit 401, the first operation unit 402, the second obtaining unit 403, the second operation unit 404, the third obtaining unit 405, and the third operation unit 406 in this embodiment are similar to the first obtaining unit 301, the first operation unit 302, the second obtaining unit 303, the second operation unit 304, the third obtaining unit 305, and the third operation unit 306 in the embodiment corresponding to fig. 3, and are not described herein again;
note that, the first arithmetic unit 402 in the embodiment of the present application includes:
a first operation subunit 4021 for calculating a formula
Calculating to obtain the target particle size of the atmospheric particulates, wherein D is the particle size of the atmospheric particulates, and DdryThe target particle size of the atmospheric particulate matter is obtained, RH is the atmospheric environment relative humidity of the monitoring point obtained by the terminal,
κiis a moisture absorption constant corresponding to the atmospheric particulate component i, n is a type value of the atmospheric particulate component, and M is a target atmospheric particulate collected in a preset target time intervalMass of particulate matter, the predetermined target time interval being a subset of the predetermined time interval, MiIs the mass of the atmospheric particulate component i corresponding to the M.
The second arithmetic unit 404 in the embodiment of the present application includes:
a second operation subunit 4041 for calculating the formula
Calculating to obtain the actual mass of the atmospheric particulates, wherein Mdryρ is the density of the atmospheric particulates, which is the actual mass of the atmospheric particulates.
The specific functions and structures of the terminal in the embodiments corresponding to fig. 3 and fig. 4 are used to implement the steps of processing performed by the terminal in the embodiments shown in fig. 1 to fig. 2, and are not described herein again.
As shown in fig. 5, a schematic diagram of an embodiment of a terminal in the embodiment of the present application includes:
the terminals may vary widely due to configuration or performance, and may include one or more Central Processing Units (CPUs) 522 (e.g., one or more processors) and memory 532, one or more storage media 530 (e.g., one or more mass storage devices) storing applications 542 or data 544. Memory 532 and storage media 530 may be, among other things, transient storage or persistent storage. The program stored in the storage medium 530 may include one or more modules (not shown), and each module may include a series of instruction operations in the terminal. Still further, the central processor 522 may be configured to communicate with the storage medium 530, and execute a series of instruction operations in the storage medium 530 on the terminal.
The terminal may also include one or more power supplies 526, one or more wired or wireless network interfaces 550, one or more input-output interfaces 558, and/or one or more operating systems 541, such as Windows Server, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, etc.
The steps in the method for acquiring the amount of atmospheric particulate matter described above with reference to fig. 1 to 2 are implemented by the terminal based on the structure shown in fig. 5.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method described in the embodiments of fig. 1 to 2 of the present application. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (6)
1. A method for obtaining the mass of atmospheric particulate matter, comprising:
the method comprises the steps that a terminal obtains a first set of atmospheric particulate particle sizes, the atmospheric particulate particle sizes are obtained by collecting the atmospheric particulate particles in a preset time interval through monitoring equipment, the atmospheric particulate particle sizes are the particle sizes of the atmospheric particulate particles after atmospheric environment water vapor is absorbed at a monitoring point, and the monitoring point is the position of the monitoring equipment;
the terminal calculates the atmospheric particulate particle size in the first set according to a first preset algorithm to obtain an atmospheric particulate target particle size and obtains a second set of the atmospheric particulate target particle size, wherein the atmospheric particulate target particle size is the particle size of the atmospheric particulate after being dried, and the terminal calculates the atmospheric particulate particle size in the first set according to the first preset algorithm to obtain the large particlesThe target particle size of the gas particles is specifically as follows: the terminal is according to a calculation formula
Calculating to obtain the target particle size of the atmospheric particulates, wherein D is the particle size of the atmospheric particulates, and DdryThe target particle size of the atmospheric particulates is obtained, RH is the atmospheric environment relative humidity of the monitoring point obtained by the terminal,
κiis a moisture absorption constant corresponding to an atmospheric particulate component i, n is a type value of the atmospheric particulate component, M is a target atmospheric particulate mass acquired in a preset target time interval, the preset target time interval is a subset of the preset time interval, and M isiIs the mass of the atmospheric particulate component i corresponding to the M;
the terminal calculates the target atmospheric particulate matter particle size according to a second preset algorithm to obtain the actual mass of the atmospheric particulate matter, and obtains a third set of the actual mass of the atmospheric particulate matter, wherein the actual mass of the atmospheric particulate matter calculated by the target atmospheric particulate matter particle size according to the second preset algorithm is specifically as follows: the terminal is according to a calculation formula
Calculating to obtain the actual mass of the atmospheric particulates, wherein MdryThe actual mass of the atmospheric particulate matter is rho, and the density of the atmospheric particulate matter is rho;
and the terminal calculates the actual mass of the atmospheric particulates in the third set to obtain the actual total mass of the atmospheric particulates in the preset time interval.
2. The method of claim 1, wherein p comprises 1.6g/cm-3。
3. A terminal, comprising:
the device comprises a first acquisition unit, a second acquisition unit and a monitoring unit, wherein the first acquisition unit is used for acquiring a first set of atmospheric particulate particle sizes, the atmospheric particulate particle sizes are acquired by monitoring equipment within a preset time interval, the atmospheric particulate particle sizes are the particle sizes of atmospheric particulate particles after atmospheric environment water vapor is absorbed at a monitoring point, and the monitoring point is the position of the monitoring equipment;
a first arithmetic unit, configured to calculate, according to a first preset algorithm, a target atmospheric particulate size from the atmospheric particulate sizes in the first set, where the target atmospheric particulate size is a dried atmospheric particulate size, and the first arithmetic unit includes a first arithmetic subunit, configured to calculate, according to a calculation formula, a target atmospheric particulate size from the atmospheric particulate sizes in the first set
Calculating to obtain the target particle size of the atmospheric particulates, wherein D is the particle size of the atmospheric particulates, and DdryThe target particle size of the atmospheric particulates is obtained, RH is the atmospheric environment relative humidity of the monitoring point obtained by the terminal,
κiis a moisture absorption constant corresponding to an atmospheric particulate component i, n is a type value of the atmospheric particulate component, M is a target atmospheric particulate mass acquired in a preset target time interval, the preset target time interval is a subset of the preset time interval, and M isiIs the mass of the atmospheric particulate component i corresponding to the M;
a second acquisition unit for acquiring a second set of the target particle sizes of the atmospheric particulates;
the second arithmetic unit is used for calculating the actual mass of the atmospheric particulates according to a second preset algorithm and the target particle size of the atmospheric particulates, wherein the second arithmetic unit comprises a second arithmetic subunit which is used for calculating the actual mass of the atmospheric particulates according to a calculation formula
Is calculated toTo the actual mass of atmospheric particulates, wherein MdryThe actual mass of the atmospheric particulate matter is rho, and the density of the atmospheric particulate matter is rho;
a third acquisition unit for acquiring a third set of actual mass of atmospheric particulates;
and the third operation unit is used for performing summation operation on the actual mass of the atmospheric particulates in the third set to obtain the actual total mass of the atmospheric particulates in the preset time interval.
4. A terminal, comprising:
the system comprises a processor, a memory, a bus and an input/output interface;
the memory has program code stored therein;
the processor, when calling program code in the memory, performs the method of any of claims 1-2.
5. A computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 2.
6. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method of any of claims 1-2.
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