Aerosol particle concentration measuring method, device, equipment and medium

Abstract

The embodiment of the invention discloses an aerosol particle concentration measuring method, device, equipment and medium, and the measuring method comprises the following steps: firstly, controlling a first incident light signal to be incident into a gas cavity in which aerosol particles with the concentration to be measured are located, and collecting a first transmission light signal penetrating through the aerosol particles with the concentration to be measured; and then determining the concentration of the aerosol particles with the concentration to be measured according to the incident light intensity of the first incident light signal, the transmission light intensity of the first transmission light signal and a preset mapping relationship among the incident light intensity, the transmission light intensity and the aerosol particle concentration. According to the method, the concentration of the aerosol particles is calibrated and calculated based on the light transmission method, so that the concentration of the aerosol particles with the concentration to be measured is determined, high-precision measurement and real-time measurement of the concentration of the aerosol particles are realized, the measurement steps and operation of the concentration of the aerosol particles are simplified, and the measurement efficiency is improved. The method is suitable for multiple fields of environmental monitoring, industrial emission monitoring and the like, and has a wide application prospect and a remarkable practical value.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of aerosol concentration detection, and in particular to a method, device, equipment and medium for measuring aerosol particle concentration. Background Art

[0002] In recent decades, scientific research has focused more on the mesoscopic field between the macroscopic world and the microscopic world, namely aerosol particles. Aerosol refers to a dispersed system of solid or liquid particles dispersed in a gas, and the size of aerosol particles usually ranges from 1nm to 100μm. Accurate measurement of aerosol particle concentration is of great significance in various fields.

[0003] The current methods for detecting the concentration of aerosol particles can be roughly divided into two categories, sampling methods (for example, filter membrane weighing method, β-ray absorption method, piezoelectric crystal method, micro-oscillating balance method, etc.) and non-sampling methods (for example, light transmission method, light scattering method, blackness method, etc.). Among them, the more typical and commonly used are laser scattering method and filter membrane weighing method, but the laser scattering method is greatly affected by the shape and refractive index of aerosol particles, and the filter membrane weighing method cannot calculate the concentration of aerosol particles in real time. It has shortcomings in measurement accuracy and real-time performance, and the measurement equipment is also relatively complex. Summary of the invention

[0004] The embodiments of the present invention provide a method, device, equipment and medium for measuring aerosol particle concentration, which calibrates and calculates the aerosol particle concentration based on the light transmission method, aiming to achieve high-precision and real-time detection of aerosol particle concentration and simplify the measurement steps and operations of aerosol particle concentration.

[0005] In a first aspect, an embodiment of the present invention provides a method for measuring aerosol particle concentration, comprising:

[0006] Controlling a first incident light signal to be incident on the gas cavity where the aerosol particles of the to-be-measured concentration are located, and collecting a first transmitted light signal that passes through the aerosol particles of the to-be-measured concentration;

[0007] The concentration of the aerosol particles to be measured is determined according to the incident light intensity of the first incident light signal and the transmitted light intensity of the first transmitted light signal, as well as a preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration.

[0008] Optionally, before determining the concentration of aerosol particles of the to-be-measured concentration according to the incident light intensity of the first incident light signal and the transmitted light intensity of the first transmitted light signal, and a preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration, the method further includes:

[0009] Controlling a plurality of second incident light signals to be incident on the corresponding gas cavities where aerosol particles of known concentrations are located, and respectively collecting second transmitted light signals passing through the aerosol particles of known concentrations; wherein the concentrations of the aerosol particles of known concentrations are different from each other;

[0010] According to the incident light intensity of the second incident light signal and the transmitted light intensity of the second transmitted light signal, a preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration is calibrated.

[0011] Optionally, according to the incident light intensity of the second incident light signal and the transmitted light intensity of the second transmitted light signal, a preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration is calibrated, including:

[0012] According to the ratio of the transmitted light intensity of the second transmitted light signal to the incident light intensity of the second incident light signal, a preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration is determined.

[0013] Optionally, according to the incident light intensity of the second incident light signal and the transmitted light intensity of the second transmitted light signal, a preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration is calibrated, including:

[0014] According to the logarithmic value of the first ratio with base 10, the preset mapping relationship between the incident light intensity, the transmitted light intensity and the aerosol particle concentration is determined; wherein the first ratio is the ratio of the transmitted light intensity of the second transmitted light signal to the incident light intensity of the second incident light signal.

[0015] Optionally, determining a preset mapping relationship between incident light intensity, transmitted light intensity, and aerosol particle concentration according to a logarithmic value with base 10 of the first ratio includes:

[0016] According to the calculation formula C = [lg (I1 / I0)] / k, the preset mapping relationship between the incident light intensity, the transmitted light intensity and the aerosol particle concentration is determined; wherein C represents the concentration of aerosol particles of known concentration, I0 represents the incident light intensity of the second incident light signal, I1 represents the transmitted light intensity of the second transmitted light signal, and k represents the linear mapping coefficient.

[0017] Optionally, determining the concentration of aerosol particles of a to-be-measured concentration according to the incident light intensity of the first incident light signal and the transmitted light intensity of the first transmitted light signal, and a preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration, comprises:

[0018] According to the calculation formula D=[lg(I3 / I2)] / k, the concentration D of the aerosol particles to be measured is determined; wherein I2 represents the incident light intensity of the first incident light signal, and I3 represents the transmitted light intensity of the first transmitted light signal.

[0019] Optionally, according to the incident light intensity of the second incident light signal and the transmitted light intensity of the second transmitted light signal, a preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration is calibrated, including:

[0020] The corresponding relationship between each first ratio and the corresponding concentration of aerosol particles of known concentration is defined as a coordinate point, and curve fitting is performed to obtain a preset mapping relationship between incident light intensity, transmitted light intensity and aerosol particle concentration; wherein the first ratio is the ratio of the transmitted light intensity of the second transmitted light signal to the incident light intensity of the second incident light signal.

[0021] In a second aspect, an embodiment of the present invention further provides a device for measuring aerosol particle concentration, comprising:

[0022] A signal acquisition module, used to control a first incident light signal to be incident on the gas cavity where the aerosol particles of the to-be-measured concentration are located, and to acquire a first transmitted light signal that passes through the aerosol particles of the to-be-measured concentration;

[0023] The concentration measurement module is used to determine the concentration of aerosol particles to be measured according to the incident light intensity of the first incident light signal and the transmitted light intensity of the first transmitted light signal, as well as a preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration.

[0024] In a third aspect, an embodiment of the present invention further provides a terminal device, including:

[0025] one or more processors;

[0026] A storage device for storing one or more programs;

[0027] When one or more programs are executed by one or more processors, the one or more processors implement the aerosol particle concentration measurement method as provided in any one of the first aspects.

[0028] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a method for measuring aerosol particle concentration as provided in any one of the first aspects.

[0029] The embodiment of the present invention provides a method, device, equipment and medium for measuring the concentration of aerosol particles. The method first controls a first incident light signal to be incident into the gas cavity where the aerosol particles of the concentration to be measured are located, and collects the first transmitted light signal that passes through the aerosol particles of the concentration to be measured, and then determines the concentration of the aerosol particles of the concentration to be measured according to the incident light intensity of the first incident light signal and the transmitted light intensity of the first transmitted light signal, as well as the preset mapping relationship between the incident light intensity, the transmitted light intensity and the aerosol particle concentration. Using the above method, the concentration of aerosol particles is calibrated and calculated based on the light transmission method, and the incident light intensity of the first incident light signal and the transmitted light intensity of the first transmitted light signal obtained by collecting are analyzed and compared with the preset mapping relationship to determine the concentration of aerosol particles of the concentration to be measured, thereby realizing high-precision measurement and real-time measurement of the aerosol particle concentration, simplifying the measurement steps and operations of the aerosol particle concentration, and being suitable for multiple fields such as environmental monitoring and industrial emission monitoring, and having broad application prospects and significant practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 It is a schematic flow chart of a method for measuring aerosol particle concentration provided by an embodiment of the present invention;

[0032] Figure 2 is a structural schematic diagram of an aerosol particle concentration measurement system provided by an embodiment of the present invention;

[0033] Figure 3 is a flow chart of another method for measuring aerosol particle concentration provided by an embodiment of the present invention;

[0034] Figure 4 is a schematic flow chart of another method for measuring aerosol particle concentration provided by an embodiment of the present invention;

[0035] Figure 5 is a schematic structural diagram of a device for measuring aerosol particle concentration provided by an embodiment of the present invention;

[0036] Figure 6 It is a structural diagram of a terminal device provided by an embodiment of the present invention.

[0037] Description of reference numerals:

[0038] 1-light source; 2-photodetector; 3-gas chamber. DETAILED DESCRIPTION

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0040] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. It should be noted that the directional words such as "upper", "lower", "left", "right" and the like described in the embodiments of the present invention are described at the angles shown in the accompanying drawings and should not be understood as limitations on the embodiments of the present invention. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is formed "on" or "under" another element, it can not only be directly formed "on" or "under" another element, but also indirectly formed "on" or "under" another element through an intermediate element. The terms "first", "second", etc. are only used for descriptive purposes and do not represent any order, quantity or importance, but are only used to distinguish different components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific circumstances.

[0041] The term “including” and its variations used in the present invention are open inclusions, that is, “including but not limited to.” The term “based on” means “based at least in part on.” The term “one embodiment” means “at least one embodiment.”

[0042] It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish the corresponding contents, and are not used to limit the order or interdependence.

[0043] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0044] The embodiment of the present invention provides a method for measuring the concentration of aerosol particles. The method for measuring the concentration of aerosol particles can be applied to the situation of measuring the concentration of any aerosol particles. The method for measuring the concentration of aerosol particles can be performed by a device for measuring the concentration of aerosol particles. The device for measuring the concentration of aerosol particles can be implemented in the form of hardware and / or software. The device for measuring the concentration of aerosol particles can be configured in a control panel. Figure 1 As shown, the measurement method includes:

[0045] S110 , controlling a first incident light signal to be incident on a gas cavity where aerosol particles of a concentration to be measured are located, and collecting a first transmitted light signal that passes through aerosol particles of a concentration to be measured.

[0046] Specifically, Figure 2 As shown, this embodiment provides a measurement system for aerosol particle concentration, which includes a light source 1, a photodetector 2 and a gas cavity 3, wherein the light source 1 and the photodetector 2 are respectively located on two sides of the gas cavity 3 that are opposite to each other. The light source 1 can emit a first incident light signal toward the gas cavity 3 where the aerosol particles of the concentration to be measured are located, and the first incident light signal passes through the gas cavity 3. After the first incident light signal is absorbed and scattered by the aerosol particles in the gas cavity 3, the photodetector 2 can collect the corresponding first transmitted light signal. It can be understood that based on the light transmission method, since the first incident light signal is absorbed and scattered by the aerosol particles in the gas cavity 3, the transmission light intensity of the corresponding first transmitted light signal will change, and the difference between the incident light intensity of the first incident light signal and the transmission light intensity of the corresponding first transmitted light signal will also change, so as to facilitate the subsequent determination of the concentration of the aerosol particles in the gas cavity 3. Exemplarily, the greater the concentration of aerosol particles in the gas cavity 3, the greater the degree to which the first incident light signal is absorbed and scattered by the aerosol particles in the gas cavity 3, and the greater the difference between the incident light intensity of the first incident light signal and the transmitted light intensity of the corresponding first transmitted light signal, and the smaller the concentration of aerosol particles in the gas cavity 3, the smaller the degree to which the first incident light signal is absorbed and scattered by the aerosol particles in the gas cavity 3, and the smaller the difference between the incident light intensity of the first incident light signal and the transmitted light intensity of the corresponding first transmitted light signal. Exemplarily, the light source 1 may be a laser, and the photodetector 2 may be a photodiode array.

[0047] S120, determining the concentration of aerosol particles to be measured according to the incident light intensity of the first incident light signal and the transmitted light intensity of the first transmitted light signal, and a preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration.

[0048] Specifically, continue to refer to Figure 2 , the measurement system also includes a host computer program ( Figure 2(not shown in the figure), the host computer program is electrically connected to the photodetector 2. After the photodetector 2 collects the corresponding first transmitted light signal, the photodetector 2 can convert the optical signal form of the collected first transmitted light signal into an electrical signal form and transmit it to the host computer program, that is, the photodetector 2 can transmit the transmitted light intensity of the collected first transmitted light signal to the host computer program. After receiving the transmitted light intensity of the first transmitted light signal, the host computer program can determine the concentration of aerosol particles to be measured according to the incident light intensity of the first incident light signal and the preset mapping relationship between the incident light intensity, the transmitted light intensity and the aerosol particle concentration. Exemplarily, the preset mapping relationship between the incident light intensity, the transmitted light intensity and the aerosol particle concentration is pre-set, which includes the specific corresponding relationship between the aerosol particle concentration and the incident light intensity of the corresponding first incident light signal and the specific corresponding relationship between the transmitted light intensity of the corresponding first transmitted light signal. Then, the concentration of the aerosol particles of the concentration to be measured can be determined according to the preset mapping relationship, as well as the known and collected incident light intensity of the first incident light signal and the transmitted light intensity of the first transmitted light signal. In this way, the various parts of the measurement system work together to achieve high-precision and real-time measurement of the concentration of aerosol particles in the gas cavity 3. In addition, the host computer program also has a display function. After determining the concentration of the aerosol particles of the concentration to be measured, the host computer program can also display the concentration of the aerosol particles to inform the relevant users.

[0049] The technical solution in the embodiment of the present invention is that the measurement method first controls a first incident light signal to be incident into the gas cavity where the aerosol particles of the concentration to be measured are located, and collects the first transmitted light signal that passes through the aerosol particles of the concentration to be measured, and then determines the concentration of the aerosol particles of the concentration to be measured according to the incident light intensity of the first incident light signal and the transmitted light intensity of the first transmitted light signal, as well as the preset mapping relationship between the incident light intensity, the transmitted light intensity and the aerosol particle concentration. Using the above method, the concentration of aerosol particles is calibrated and calculated based on the light transmission method, and the incident light intensity of the first incident light signal and the transmitted light intensity of the first transmitted light signal obtained by collecting are analyzed and compared with the preset mapping relationship to determine the concentration of aerosol particles of the concentration to be measured, thereby realizing high-precision measurement and real-time measurement of the aerosol particle concentration, simplifying the measurement steps and operations of the aerosol particle concentration, and being suitable for environmental monitoring, industrial emission monitoring and other fields, with broad application prospects and significant practical value.

[0050] The embodiment of the present invention further provides a method for measuring the concentration of aerosol particles, and this embodiment is optimized on the basis of the above embodiment. Optionally, according to the incident light intensity of the first incident light signal and the transmitted light intensity of the first transmitted light signal, and the preset mapping relationship between the incident light intensity, the transmitted light intensity and the aerosol particle concentration, before determining the concentration of the aerosol particles to be measured, it also includes:

[0051] Controlling a plurality of second incident light signals to be incident on the corresponding gas cavities where aerosol particles of known concentrations are located, and respectively collecting second transmitted light signals passing through the aerosol particles of known concentrations; wherein the concentrations of the aerosol particles of known concentrations are different from each other;

[0052] According to the incident light intensity of the second incident light signal and the transmitted light intensity of the second transmitted light signal, a preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration is calibrated.

[0053] For details not yet provided in this embodiment, please refer to the above embodiments. Figure 3 As shown, the measurement method includes:

[0054] S210, controlling a plurality of second incident light signals to be incident into corresponding gas cavities where aerosol particles of known concentration are located, and respectively collecting second transmitted light signals passing through aerosol particles of known concentration; wherein the concentrations of aerosol particles of known concentrations are different from each other.

[0055] Specifically, before measuring the concentration of aerosol particles of the concentration to be measured, it is also necessary to calibrate the above-mentioned preset mapping relationship using the specific values ​​of the concentration of aerosol particles of known concentration and the incident light intensity of the corresponding second incident light signal and the transmitted light intensity of the corresponding second transmitted light signal. That is, the projection conditions of the second incident light signal and the second transmitted light signal of aerosol particles of multiple different concentrations are calibrated to obtain a more accurate preset mapping relationship between the incident light intensity, the transmitted light intensity and the aerosol particle concentration, which is beneficial to the accuracy and reliability of the measurement of the concentration of aerosol particles of the concentration to be measured.

[0056] For example, continue to refer to Figure 2 The measurement system can also be used for the calibration process. A series of aerosol particles of known concentration can be prepared. Based on the light transmission method, the light source 1 can emit a second incident light signal toward the gas cavity 3 where the aerosol particles of known concentration are located, and the second incident light signal passes through the gas cavity 3. After the second incident light signal is absorbed and scattered by the aerosol particles in the gas cavity 3, the photodetector 2 can collect the corresponding second transmitted light signal. By performing the above calibration process in sequence, the corresponding relationship between the concentration of aerosol particles of known concentration, the incident light intensity of the corresponding second incident light signal, and the transmitted light intensity of the corresponding second transmitted light signal can be collected, so as to facilitate the subsequent determination of the preset mapping relationship between the incident light intensity, the transmitted light intensity and the aerosol particle concentration based on these data.

[0057] In addition, it should be noted that the aerosol particles of the measured concentration and the aerosol particles of the known concentration mentioned in this embodiment can be of the same type, the first incident light signal and the second incident light signal mentioned in this embodiment can be completely the same light signal, and the first transmitted light signal and the second transmitted light signal mentioned in this embodiment are both light signals after being absorbed and scattered by the aerosol particles in the gas cavity 3, and only the corresponding measurement process or calibration process is different. For example, the first incident light signal and the second incident light signal mentioned in this embodiment can be the same or different, and this embodiment is not limited here.

[0058] S220. Calibrate a preset mapping relationship among incident light intensity, transmitted light intensity and aerosol particle concentration according to the incident light intensity of the second incident light signal and the transmitted light intensity of the second transmitted light signal.

[0059] In a specific embodiment, optionally, a preset mapping relationship among incident light intensity, transmitted light intensity and aerosol particle concentration is calibrated according to the incident light intensity of the second incident light signal and the transmitted light intensity of the second transmitted light signal, including: determining the preset mapping relationship among incident light intensity, transmitted light intensity and aerosol particle concentration according to the difference between the transmitted light intensity of the second transmitted light signal and the incident light intensity of the second incident light signal.

[0060] Understandably, continue to refer to Figure 2 , based on the light transmission method, since the second incident light signal is absorbed and scattered by aerosol particles in the gas cavity 3, etc., the transmission light intensity of the corresponding second transmission light signal will change, and the difference between the transmission light intensity of the second transmission light signal and the incident light intensity of the corresponding second incident light signal will also change. Exemplarily, the greater the concentration of aerosol particles in the gas cavity 3, the greater the degree to which the second incident light signal is absorbed and scattered by aerosol particles in the gas cavity 3, and the greater the difference between the transmission light intensity of the second transmission light signal and the incident light intensity of the corresponding second incident light signal. And, the smaller the concentration of aerosol particles in the gas cavity 3, the smaller the degree to which the second incident light signal is absorbed and scattered by aerosol particles in the gas cavity 3, and the smaller the difference between the transmission light intensity of the second transmission light signal and the incident light intensity of the corresponding second incident light signal.

[0061] Specifically, the preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration can be determined according to the difference between the transmitted light intensity of the second transmitted light signal and the incident light intensity of the second incident light signal. The preset mapping relationship can be understood as a one-to-one correspondence between the concentration of aerosol particles and the difference between the transmitted light intensity of the second transmitted light signal and the incident light intensity of the second incident light signal. That is, after determining the specific value of the difference between the transmitted light intensity of the second transmitted light signal and the incident light intensity of the second incident light signal, the concentration of aerosol particles in the gas cavity 3 can be uniquely determined according to the preset mapping relationship.

[0062] In another specific embodiment, optionally, a preset mapping relationship among incident light intensity, transmitted light intensity and aerosol particle concentration is calibrated according to the incident light intensity of the second incident light signal and the transmitted light intensity of the second transmitted light signal, including: determining the preset mapping relationship among incident light intensity, transmitted light intensity and aerosol particle concentration according to the ratio of the transmitted light intensity of the second transmitted light signal to the incident light intensity of the second incident light signal.

[0063] Understandably, continue to refer to Figure 2 , based on the light transmission method, since the second incident light signal is absorbed and scattered by aerosol particles in the gas cavity 3, the transmission light intensity of the corresponding second transmission light signal will change, and the difference between the incident light intensity of the second incident light signal and the transmission light intensity of the corresponding second transmission light signal will also change, and the ratio of the transmission light intensity of the second transmission light signal to the incident light intensity of the corresponding second incident light signal will also change. Exemplarily, the greater the concentration of aerosol particles in the gas cavity 3, the greater the degree to which the second incident light signal is absorbed and scattered by aerosol particles in the gas cavity 3, and the smaller the value of the ratio of the transmission light intensity of the second transmission light signal to the incident light intensity of the corresponding second incident light signal. And, the smaller the concentration of aerosol particles in the gas cavity 3, the smaller the degree to which the second incident light signal is absorbed and scattered by aerosol particles in the gas cavity 3, and the larger the value of the ratio of the transmission light intensity of the second transmission light signal to the incident light intensity of the corresponding second incident light signal.

[0064] Specifically, the preset mapping relationship between the incident light intensity, the transmitted light intensity and the aerosol particle concentration can be determined according to the ratio of the transmitted light intensity of the second transmitted light signal to the incident light intensity of the second incident light signal. The preset mapping relationship can be understood as a one-to-one correspondence between the concentration of aerosol particles and the ratio of the transmitted light intensity of the second transmitted light signal to the incident light intensity of the second incident light signal. That is, after determining the specific value of the ratio of the transmitted light intensity of the second transmitted light signal to the incident light intensity of the second incident light signal, the concentration of aerosol particles in the gas cavity 3 can be determined uniquely according to the preset mapping relationship.

[0065] In another specific embodiment, optionally, according to the incident light intensity of the second incident light signal and the transmitted light intensity of the second transmitted light signal, a preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration is calibrated, including: determining the preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration according to the logarithmic value of the first ratio with base 10; wherein the first ratio is the ratio of the transmitted light intensity of the second transmitted light signal to the incident light intensity of the second incident light signal. Further, according to the logarithmic value of the first ratio with base 10, a preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration is determined, including: determining the preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration according to the calculation formula C=[lg(I1 / I0)] / k; wherein C represents the concentration of aerosol particles of known concentration, I0 represents the incident light intensity of the second incident light signal, I1 represents the transmitted light intensity of the second transmitted light signal, and k represents the linear mapping coefficient.

[0066] It is understandable that in order to further improve the calibration process and reduce the difficulty of calibration, a preset mapping relationship of the proportional relationship can be obtained. Figure 2 , based on the light transmission method, since the second incident light signal is absorbed and scattered by the aerosol particles in the gas cavity 3, the transmission light intensity of the corresponding second transmitted light signal will change, the ratio of the transmission light intensity of the second transmitted light signal to the incident light intensity of the corresponding second incident light signal will also change, and the logarithm value of the ratio of the transmission light intensity of the second transmitted light signal to the incident light intensity of the corresponding second incident light signal with a base of 10 will also change. Exemplarily, the greater the concentration of aerosol particles in the gas cavity 3, the greater the degree to which the second incident light signal is absorbed and scattered by the aerosol particles in the gas cavity 3, the smaller the value of the ratio of the transmission light intensity of the second transmitted light signal to the incident light intensity of the corresponding second incident light signal, and the logarithm value of the ratio of the transmission light intensity of the second transmitted light signal to the incident light intensity of the corresponding second incident light signal with a base of 10 will also be smaller. Furthermore, the smaller the concentration of aerosol particles in the gas cavity 3, the smaller the degree to which the second incident light signal is absorbed and scattered by the aerosol particles in the gas cavity 3, the larger the ratio of the transmitted light intensity of the second transmitted light signal to the incident light intensity of the corresponding second incident light signal, and the larger the logarithm of the ratio of the transmitted light intensity of the second transmitted light signal to the incident light intensity of the corresponding second incident light signal with base 10.

[0067] Specifically, the preset mapping relationship between the incident light intensity, the transmitted light intensity and the aerosol particle concentration can be determined according to the logarithmic value with base 10 of the first ratio. The preset mapping relationship can be understood as a one-to-one correspondence between the concentration of aerosol particles and the logarithmic value with base 10 of the ratio of the transmitted light intensity of the second transmitted light signal to the incident light intensity of the second incident light signal. That is, after determining the specific value of the logarithmic value with base 10 of the ratio of the transmitted light intensity of the second transmitted light signal to the incident light intensity of the second incident light signal, the concentration of the aerosol particles in the gas cavity 3 can be uniquely determined according to the preset mapping relationship.

[0068] Further, according to the Lambert-Beer law, when other conditions remain unchanged, the incident light intensity of the second incident light signal is I0, the corresponding transmitted light intensity of the second transmitted light signal is I1, and the ratio of the transmitted light intensity of the second transmitted light signal to the incident light intensity of the second incident light signal is I1 / I0. It is assumed that: A=lg(I1 / I0), and A=k×C, where k represents the linear mapping coefficient. In this way, the linear relationship between the logarithmic value A with a base of 10 of the ratio of the transmitted light intensity of the second transmitted light signal to the incident light intensity of the second incident light signal and the concentration C of the aerosol particles is achieved. The concentration C of each aerosol particle of known concentration (which may be C1, C2, C3, etc.) and the logarithmic value A with a base of 10 of the ratio of the transmitted light intensity of the corresponding second transmitted light signal to the incident light intensity of the second incident light signal are calculated respectively (which may be A1, A2, A3, etc.). The value of the linear mapping coefficient k is then determined. The calculation formula C = [lg(I1 / I0)] / k can be understood as the preset mapping relationship between the incident light intensity, the transmitted light intensity and the aerosol particle concentration, which includes a one-to-one correspondence between the concentration of aerosol particles and the logarithmic value of the ratio of the transmitted light intensity of the second transmitted light signal to the incident light intensity of the second incident light signal with a base of 10.

[0069] In another specific embodiment, optionally, a preset mapping relationship among incident light intensity, transmitted light intensity and aerosol particle concentration is calibrated based on the incident light intensity of the second incident light signal and the transmitted light intensity of the second transmitted light signal, including: defining the correspondence between each first ratio and the corresponding concentration of aerosol particles of known concentration as a coordinate point, and performing curve fitting to obtain a preset mapping relationship among incident light intensity, transmitted light intensity and aerosol particle concentration; wherein the first ratio is the ratio of the transmitted light intensity of the second transmitted light signal to the incident light intensity of the second incident light signal.

[0070] Understandably, continue to refer to Figure 2, based on the light transmission method, since the second incident light signal is absorbed and scattered by aerosol particles in the gas cavity 3, the transmission light intensity of the corresponding second transmission light signal will change, and the difference between the incident light intensity of the second incident light signal and the transmission light intensity of the corresponding second transmission light signal will also change, and the ratio of the transmission light intensity of the second transmission light signal to the incident light intensity of the corresponding second incident light signal will also change. Exemplarily, the greater the concentration of aerosol particles in the gas cavity 3, the greater the degree to which the second incident light signal is absorbed and scattered by aerosol particles in the gas cavity 3, and the smaller the value of the ratio of the transmission light intensity of the second transmission light signal to the incident light intensity of the corresponding second incident light signal. And, the smaller the concentration of aerosol particles in the gas cavity 3, the smaller the degree to which the second incident light signal is absorbed and scattered by aerosol particles in the gas cavity 3, and the larger the value of the ratio of the transmission light intensity of the second transmission light signal to the incident light intensity of the corresponding second incident light signal.

[0071] Specifically, the ratio of the transmission light intensity of the acquired second transmission light signal to the incident light intensity of the second incident light signal can be defined as a first ratio, and the corresponding relationship between each first ratio and the concentration of the corresponding aerosol particles of known concentration can be defined as a coordinate point, and curve fitting can be performed to establish a curve of the corresponding relationship between the concentration of aerosol particles and the ratio of the transmission light intensity of the second transmission light signal to the incident light intensity of the second incident light signal. The preset mapping relationship can be understood as the concentration of aerosol particles in all units, which can correspond to the ratio of the transmission light intensity of the second transmission light signal to the incident light intensity of the second incident light signal. In this way, the preset mapping relationship corresponding to various concentrations of aerosol particles can be obtained using limited calibration data, which effectively simplifies the calibration process. Furthermore, it can also be defined that the incident light intensity of each second incident light signal is the same, then the preset mapping relationship can be understood as a curve of the one-to-one correspondence between each concentration of aerosol particles and the transmission light intensity of the corresponding second transmission light signal. Afterwards, the fitting curve can also be verified and calibrated to ensure its accuracy and reliability in practical applications.

[0072] S230, controlling a first incident light signal to be incident on the gas cavity where the aerosol particles of the to-be-measured concentration are located, and collecting a first transmitted light signal that passes through the aerosol particles of the to-be-measured concentration.

[0073] It should also be noted that S210 and S220 are steps for calibrating the preset mapping relationship between incident light intensity, transmitted light intensity and aerosol particle concentration according to aerosol particles of known concentration, and S230 is a step for obtaining the incident light intensity and transmitted light intensity corresponding to the aerosol particles of the concentration to be measured. In this embodiment, the execution order of S210, S220 and S230 is only for example and not limited. For example, S210 and S220 may be executed first, and then S230, or S230 may be executed first, and then S210 and S220, or S210, S220 and S230 may be executed simultaneously.

[0074] S240, determining the concentration of aerosol particles to be measured according to the incident light intensity of the first incident light signal and the transmitted light intensity of the first transmitted light signal, and a preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration.

[0075] The calculation formula C = [lg(I1 / I0)] / k can be understood as the preset mapping relationship between the incident light intensity, the transmitted light intensity and the aerosol particle concentration, which includes a one-to-one correspondence between the concentration of aerosol particles and the logarithmic value of the ratio of the transmitted light intensity of the second transmitted light signal to the incident light intensity of the second incident light signal with a base of 10. On this basis, this embodiment further illustrates the process of determining the concentration of aerosol particles of the concentration to be measured using the preset mapping relationship. Optionally, the concentration of aerosol particles of the concentration to be measured is determined based on the incident light intensity of the first incident light signal and the transmitted light intensity of the first transmitted light signal, as well as the preset mapping relationship between the incident light intensity, the transmitted light intensity and the aerosol particle concentration, including: determining the concentration D of the aerosol particles of the concentration to be measured according to the calculation formula D = [lg(I3 / I2)] / k; wherein I2 represents the incident light intensity of the first incident light signal, and I3 represents the transmitted light intensity of the first transmitted light signal.

[0076] Specifically, after determining the preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration, the known incident light intensity I2 of the first incident light signal and the transmitted light intensity I3 of the first transmitted light signal can be substituted into the calculation formula D = [lg(I3 / I2)] / k. At this time, the value of the linear mapping coefficient k has been determined during the calibration process and can be understood as a known value. In this way, the concentration D of the aerosol particles to be measured can be calculated.

[0077] The present invention also provides a method for measuring the concentration of aerosol particles. Figure 2 and Figure 4As shown, the measurement system can be used to first perform a calibration process on a plurality of known aerosol particles of different concentrations, and after determining the preset mapping relationship, the concentration of the aerosol particles of the concentration to be measured can be measured. The above calibration process can be to control the light source 1 to emit the second incident light signal toward the gas cavity 3 where the aerosol particles of different concentrations are located, and control the photodetector 2 to collect the corresponding second transmitted light signal that passes through the aerosol particles of each known concentration, and perform photoelectric signal conversion. Afterwards, the data of the concentration of aerosol particles of multiple groups of known concentrations, the incident light intensity of the corresponding second incident light signal, and the transmitted light intensity of the corresponding second transmitted light signal can be analyzed to determine the preset mapping relationship between the incident light intensity, the transmitted light intensity and the aerosol particle concentration. The above measurement process can be to control the light source 1 to emit the first incident light signal toward the gas cavity 3 where the aerosol particles of the concentration to be measured are located, and control the photodetector 2 to collect the corresponding first transmitted light signal that passes through the aerosol particles of the concentration to be measured, and perform photoelectric signal conversion. Afterwards, the known incident light intensity of the first incident light signal and the collected transmitted light intensity of the first transmitted light signal are respectively transmitted to the host computer program. After receiving the incident light intensity of the first incident light signal and the transmitted light intensity of the first transmitted light signal, the host computer program can determine the concentration of the aerosol particles to be measured according to the preset mapping relationship between the calibrated incident light intensity, the transmitted light intensity and the aerosol particle concentration.

[0078] The embodiment of the present invention also provides a device for measuring the concentration of aerosol particles, which can be applied to the situation of measuring the concentration of any aerosol particles. The device for measuring the concentration of aerosol particles can be implemented in the form of hardware and / or software and is generally configured in a control panel. Figure 5 As shown, the measuring device comprises:

[0079] The signal acquisition module 310 is used to control a first incident light signal to be incident on the gas cavity where the aerosol particles of the concentration to be measured are located, and to collect a first transmitted light signal that passes through the aerosol particles of the concentration to be measured; the concentration measurement module 320 is used to determine the concentration of the aerosol particles of the concentration to be measured based on the incident light intensity of the first incident light signal and the transmitted light intensity of the first transmitted light signal, as well as a preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration.

[0080] The technical solution in the embodiment of the present invention is that the measurement method first controls a first incident light signal to be incident into the gas cavity where the aerosol particles of the concentration to be measured are located, and collects the first transmitted light signal that passes through the aerosol particles of the concentration to be measured, and then determines the concentration of the aerosol particles of the concentration to be measured according to the incident light intensity of the first incident light signal and the transmitted light intensity of the first transmitted light signal, as well as the preset mapping relationship between the incident light intensity, the transmitted light intensity and the aerosol particle concentration. Using the above method, the concentration of aerosol particles is calibrated and calculated based on the light transmission method, and the incident light intensity of the first incident light signal and the transmitted light intensity of the first transmitted light signal obtained by collecting are analyzed and compared with the preset mapping relationship to determine the concentration of aerosol particles of the concentration to be measured, thereby realizing high-precision measurement and real-time measurement of the aerosol particle concentration, simplifying the measurement steps and operations of the aerosol particle concentration, and being suitable for environmental monitoring, industrial emission monitoring and other fields, with broad application prospects and significant practical value.

[0081] Based on the above technical solution, optionally, the measuring device also includes a signal acquisition module and a mapping relationship calibration module, the signal acquisition module is used to control multiple second incident light signals to be incident into the corresponding gas cavity where the aerosol particles of known concentration are located, and respectively collect the second transmitted light signals passing through the aerosol particles of each known concentration; wherein the concentrations of the aerosol particles of each known concentration are different from each other; the mapping relationship calibration module is used to calibrate a preset mapping relationship between the incident light intensity, the transmitted light intensity and the aerosol particle concentration according to the incident light intensity of the second incident light signal and the transmitted light intensity of the second transmitted light signal.

[0082] Optionally, the mapping relationship calibration module may specifically include a first mapping relationship determination unit, which is used to determine a preset mapping relationship between incident light intensity, transmitted light intensity and aerosol particle concentration based on the ratio of the transmitted light intensity of the second transmitted light signal to the incident light intensity of the second incident light signal.

[0083] Optionally, the mapping relationship calibration module may specifically include a second mapping relationship determination unit, which is used to determine a preset mapping relationship between incident light intensity, transmitted light intensity and aerosol particle concentration based on the logarithmic value with base 10 of the first ratio; wherein the first ratio is the ratio of the transmitted light intensity of the second transmitted light signal to the incident light intensity of the second incident light signal.

[0084] Optionally, the second mapping relationship determination unit may specifically include a second mapping relationship determination subunit, which is used to determine a preset mapping relationship between incident light intensity, transmitted light intensity and aerosol particle concentration according to a calculation formula C = [lg(I1 / I0)] / k; wherein C represents the concentration of aerosol particles of known concentration, I0 represents the incident light intensity of the second incident light signal, I1 represents the transmitted light intensity of the second transmitted light signal, and k represents the linear mapping coefficient.

[0085] Optionally, the concentration measurement module 320 may specifically include a concentration measurement unit, which is used to determine the concentration D of aerosol particles to be measured according to the calculation formula D=[lg(I3 / I2)] / k; wherein I2 represents the incident light intensity of the first incident light signal, and I3 represents the transmitted light intensity of the first transmitted light signal.

[0086] Optionally, the mapping relationship calibration module may specifically include a third mapping relationship determination unit, which is used to define the correspondence between each first ratio and the corresponding concentration of aerosol particles of known concentration as a coordinate point, and perform curve fitting to obtain a preset mapping relationship between incident light intensity, transmitted light intensity and aerosol particle concentration; wherein the first ratio is the ratio of the transmitted light intensity of the second transmitted light signal to the incident light intensity of the second incident light signal.

[0087] The device for measuring aerosol particle concentration provided in the embodiment of the present invention can execute the method for measuring aerosol particle concentration provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0088] Figure 6 It is a schematic diagram of the structure of a terminal device provided by an embodiment of the present invention. The terminal device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The terminal device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0089] like Figure 6As shown, the terminal device 100 includes one or more processors 110, and a storage device, which is communicatively connected to the processor 110, such as a read-only memory (ROM) 120, a random access memory (RAM) 130, etc., wherein the storage device stores a computer program that can be executed by one or more processors, and the processor 110 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 120 or the computer program loaded from the storage unit 180 to the random access memory (RAM) 130. In the RAM 130, various programs and data required for the operation of the terminal device 100 can also be stored. The processor 110, the ROM 120, and the RAM 130 are connected to each other via a bus 140. An input / output (I / O) interface 150 is also connected to the bus 140.

[0090] A number of components in the terminal device 100 are connected to the I / O interface 150, including: an input unit 160, such as a keyboard, a mouse, etc.; an output unit 170, such as various types of displays, speakers, etc.; a storage unit 180, such as a disk, an optical disk, etc.; and a communication unit 190, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 190 allows the terminal device 100 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0091] The processor 110 may be a variety of general and / or dedicated processing components with processing and computing capabilities. Some examples of the processor 110 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 110 performs the various methods and processes described above, such as a method for measuring aerosol particle concentration.

[0092] In some embodiments, the method for measuring the concentration of aerosol particles may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 180. In some embodiments, part or all of the computer program may be loaded and / or installed on the terminal device 100 via the ROM 120 and / or the communication unit 190. When the computer program is loaded into the RAM 130 and executed by the processor 110, one or more steps of the method for measuring the concentration of aerosol particles described above may be performed. Alternatively, in other embodiments, the processor 110 may be configured to perform the method for measuring the concentration of aerosol particles in any other appropriate manner (e.g., by means of firmware).

[0093] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0094] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0095] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0096] To provide interaction with a user, the systems and techniques described herein may be implemented on a terminal device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball), through which the user can provide input to the terminal device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0097] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0098] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0099] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0100] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for measuring aerosol particle concentration, characterized in that: include: Controlling a first incident light signal to be incident on a gas cavity where aerosol particles of a concentration to be measured are located, and collecting a first transmitted light signal that passes through the aerosol particles of a concentration to be measured; The concentration of the aerosol particles to be measured is determined according to the incident light intensity of the first incident light signal and the transmitted light intensity of the first transmitted light signal, and a preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration.

2. The measuring method according to claim 1, characterized in that: Before determining the concentration of the aerosol particles of the to-be-measured concentration according to the incident light intensity of the first incident light signal and the transmitted light intensity of the first transmitted light signal, and the preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration, the method further includes: Controlling a plurality of second incident light signals to be incident on the corresponding gas cavities where aerosol particles of known concentration are located, and respectively collecting second transmitted light signals passing through the aerosol particles of known concentration; wherein the concentrations of the aerosol particles of known concentration are different from each other; According to the incident light intensity of the second incident light signal and the transmitted light intensity of the second transmitted light signal, a preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration is calibrated.

3. The measuring method according to claim 2, characterized in that: According to the incident light intensity of the second incident light signal and the transmitted light intensity of the second transmitted light signal, a preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration is calibrated, including: According to the ratio of the transmitted light intensity of the second transmitted light signal to the incident light intensity of the second incident light signal, a preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration is determined.

4. The measuring method according to claim 2, characterized in that: According to the incident light intensity of the second incident light signal and the transmitted light intensity of the second transmitted light signal, a preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration is calibrated, including: According to the logarithmic value of the first ratio with base 10, the preset mapping relationship between the incident light intensity, the transmitted light intensity and the aerosol particle concentration is determined; wherein the first ratio is the ratio of the transmitted light intensity of the second transmitted light signal to the incident light intensity of the second incident light signal.

5. The measuring method according to claim 4, characterized in that: Determining a preset mapping relationship between the incident light intensity, the transmitted light intensity, and the aerosol particle concentration according to a logarithmic value with base 10 of the first ratio includes: According to the calculation formula C=[lg(I1 / I0)] / k, the preset mapping relationship between the incident light intensity, the transmitted light intensity and the aerosol particle concentration is determined; wherein C represents the concentration of the aerosol particles of the known concentration, I0 represents the incident light intensity of the second incident light signal, I1 represents the transmitted light intensity of the second transmitted light signal, and k represents the linear mapping coefficient.

6. The measuring method according to claim 5, characterized in that: Determining the concentration of the aerosol particles of the to-be-measured concentration according to the incident light intensity of the first incident light signal and the transmitted light intensity of the first transmitted light signal, and a preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration, comprises: According to the calculation formula D=[lg(I3 / I2)] / k, the concentration D of the aerosol particles to be measured is determined; wherein I2 represents the incident light intensity of the first incident light signal, and I3 represents the transmitted light intensity of the first transmitted light signal.

7. The measuring method according to claim 2, characterized in that: According to the incident light intensity of the second incident light signal and the transmitted light intensity of the second transmitted light signal, a preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration is calibrated, including: The corresponding relationship between each first ratio and the corresponding concentration of the aerosol particles of known concentration is defined as a coordinate point, and curve fitting is performed to obtain a preset mapping relationship between the incident light intensity, the transmitted light intensity and the aerosol particle concentration; wherein the first ratio is the ratio of the transmitted light intensity of the second transmitted light signal to the incident light intensity of the second incident light signal.

8. A device for measuring aerosol particle concentration, characterized in that: include: A signal acquisition module, used to control a first incident light signal to be incident on the gas cavity where the aerosol particles of the concentration to be measured are located, and to acquire a first transmitted light signal that passes through the aerosol particles of the concentration to be measured; The concentration measurement module is used to determine the concentration of the aerosol particles to be measured according to the incident light intensity of the first incident light signal and the transmitted light intensity of the first transmitted light signal, and a preset mapping relationship among the incident light intensity, the transmitted light intensity and the aerosol particle concentration.

9. A terminal device, characterized in that: include: one or more processors; A storage device for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the method for measuring aerosol particle concentration as described in any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method for measuring the aerosol particle concentration as described in any one of claims 1 to 7 is implemented.

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