CN114018771A - Method for detecting liquid particles in indoor flow field - Google Patents
Method for detecting liquid particles in indoor flow field Download PDFInfo
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- CN114018771A CN114018771A CN202111271543.3A CN202111271543A CN114018771A CN 114018771 A CN114018771 A CN 114018771A CN 202111271543 A CN202111271543 A CN 202111271543A CN 114018771 A CN114018771 A CN 114018771A
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- 239000007788 liquid Substances 0.000 title claims abstract description 127
- 239000002245 particle Substances 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 38
- 239000000243 solution Substances 0.000 claims abstract description 172
- 239000012086 standard solution Substances 0.000 claims abstract description 33
- 239000003795 chemical substances by application Substances 0.000 claims description 153
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- 238000013507 mapping Methods 0.000 claims description 19
- 238000009833 condensation Methods 0.000 claims description 16
- 230000005494 condensation Effects 0.000 claims description 16
- 238000001499 laser induced fluorescence spectroscopy Methods 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 abstract description 5
- 239000013618 particulate matter Substances 0.000 description 30
- 239000000017 hydrogel Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000004062 sedimentation Methods 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000000053 physical method Methods 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/04—Investigating sedimentation of particle suspensions
Abstract
The invention provides a method for detecting liquid particles in an indoor flow field, which relates to the technical field of liquid particle detection and comprises the following steps: preparing a standard solution of a fluorescent agent; spreading a fluorescent agent standard solution in a room to form liquid particles; arranging an acquisition unit at an indoor acquisition point, and preparing a solution to be detected by using the acquisition unit after a preset time; and detecting the fluorescence intensity of the solution to be detected. The fluorescer standard solution is dispersed in a room, such as a passenger room, so as to form liquid particles containing the fluorescer, and the prepared liquid particles are utilized to simulate the motion condition of the liquid particles in the room under normal conditions. And then collecting the settled liquid particles by using a collecting unit at a collecting point, and preparing the solution to be detected. The fluorescence intensity of the solution to be detected is detected, and whether the liquid particulate matters are settled at the collection point and the settlement amount can be simply and quickly judged based on the fluorescence intensity.
Description
Technical Field
The invention relates to the technical field of liquid particulate matter detection, in particular to a method for detecting liquid particulate matter in an indoor flow field.
Background
With the high importance of society on the quality of indoor ambient air, the high sealing performance of train passenger rooms and the high gathering performance of personnel, the research on the propagation rule of liquid particles in the train passenger rooms is very important. The detection method for liquid particles in the prior art generally tends to detect the distribution condition of the liquid particles in a room, and cannot detect the sedimentation of the liquid particles.
Therefore, a method for detecting liquid particles in an indoor flow field, which can detect the sedimentation of the liquid particles in the indoor flow field, is needed.
Disclosure of Invention
The invention provides a method for detecting liquid particles in an indoor flow field, which can detect the settlement of the liquid particles indoors and solve the problem that the detection method for the liquid particles in the prior art can not detect the settlement of the liquid particles as long as the distribution condition of the liquid particles in the room is detected.
An embodiment of one aspect of the present invention provides a method for detecting liquid particles in an indoor flow field, including:
preparing a standard solution of a fluorescent agent;
dispersing the fluorescent agent standard solution in a chamber to form liquid particles;
arranging an acquisition unit at an indoor acquisition point, and preparing a solution to be detected by using the acquisition unit after a preset time;
and detecting the fluorescence intensity of the solution to be detected.
According to an embodiment of the present invention, before the preparing a standard solution of fluorescent agent, the method further comprises:
acquiring a mapping relation between the concentration of a fluorescent agent in a fluorescent agent solution and fluorescence intensity;
after the detecting the fluorescence intensity of the solution to be detected, the method further comprises the following steps:
and acquiring the concentration of the fluorescent agent of the solution to be detected according to the fluorescence intensity of the solution to be detected based on the mapping relation.
Through the fluorescent agent concentration of the solution to be measured who obtains, can have comparatively audio-visual embodiment to the settlement volume of the liquid particulate matter of gathering the point to the researcher carries out research and analysis to the settlement volume of particulate matter.
According to an embodiment of the present invention, after obtaining the concentration of the fluorescent agent in the solution to be tested, the method further includes:
and acquiring the fluorescent agent content of the solution to be detected based on the fluorescent agent concentration of the solution to be detected and the volume of the solution to be detected.
Specifically, the fluorescer content in the solution to be detected can be obtained by multiplying the fluorescer concentration of the solution to be detected and the volume of the solution to be detected. The content of the settled liquid particles in the solution to be detected can be indirectly judged through the obtained content of the fluorescent agent in the solution to be detected.
According to an embodiment of the present invention, after obtaining the content of the fluorescent agent in the solution to be tested, the method further includes:
and acquiring the settling amount of the liquid particles in the solution to be detected based on the content of the fluorescent agent in the solution to be detected and the concentration of the fluorescent agent in the fluorescent agent standard solution.
Specifically, the product of the fluorescent agent concentration of the fluorescent agent standard solution and the volume of the fluorescent agent standard solution is the fluorescent agent content in the fluorescent agent standard solution. The concentration of the fluorescent agent in the liquid particulate matter is known, namely the concentration of the fluorescent agent in the fluorescent agent standard solution. Therefore, after the content of the fluorescent agent in the solution to be detected is obtained, the settling amount of the liquid particulate matter in the solution to be detected can be obtained according to the fluorescent agent content and the fluorescent agent concentration of the liquid particulate matter based on the formula.
So, the settlement of the liquid particulate matter of analysis measuring point that can be quantitative, the result is more directly perceived, accurate.
According to an embodiment of the present invention, the setting of the collection unit at the collection point in the chamber, and the preparation of the solution to be measured by using the collection unit after a preset time period, includes:
setting a water condensation film as the acquisition unit at an acquisition point;
and dissolving the water-gel film in water after a preset time so as to prepare the solution to be detected.
Specifically, a water condensation film per unit area can be arranged at the collection point, and the water condensation film is used for collecting the settled liquid particles. And after the collection is finished, dissolving the hydrogel film in water, and simultaneously dissolving the fluorescent agent in the liquid particles in water, thereby obtaining the solution to be detected.
The water condensation film is in a solid state in a normal environment, so that the water condensation film is used for collecting settled liquid particles, and the condition that the liquid particles settle on the object surface in reality can be simulated. Meanwhile, the hydrogel film can be dissolved in water, so that liquid particles collected by the hydrogel film can be completely transferred into a solution to be detected.
In addition, the water condensation film is in a solid sheet shape in a normal environment, occupies small space and is more convenient to distribute at a plurality of collection points.
According to an embodiment of the present invention, the setting of the collection unit at the collection point in the chamber, and the preparation of the solution to be measured by using the collection unit after a preset time period, includes:
and respectively arranging the acquisition units at a plurality of acquisition points in the room, and respectively preparing the corresponding solution to be detected by using each acquisition unit after a preset time.
Specifically, the settled liquid particles are respectively collected at a plurality of indoor collection points to respectively obtain corresponding solutions to be measured.
Then, the fluorescence intensity of each part of solution to be detected is detected, and based on the mapping relation, the concentration of the fluorescent agent in each part of solution to be detected can be obtained according to the fluorescence intensity of each part of solution to be detected.
And finally, based on the steps, the content of the fluorescent agent in each part of solution to be detected and the sedimentation amount of the liquid particles can be obtained.
So set up, through the settlement volume that detects the liquid particulate matter of each gathering point to the settlement volume to each gathering point is makeed statistics of, can analyze out the settlement condition of liquid particulate matter at indoor each gathering point quantitatively, and then according to the settlement condition of each gathering point, can analyze the propagation law of liquid particulate matter indoor.
According to an embodiment of the present invention, the obtaining a mapping relationship between a fluorescence agent concentration and a fluorescence intensity of a fluorescence agent solution includes:
setting a plurality of fluorescent agent solutions with different concentrations;
detecting the fluorescence intensity corresponding to each fluorescent agent solution;
and fitting a mapping relation between the concentration of the fluorescent agent in the fluorescent agent solution and the fluorescence intensity.
Specifically, the fluorescer is prepared into fluorescer solutions with different gradients. The fluorescence intensity of the fluorescent agent solution with different concentrations can be measured by utilizing a laser-induced fluorescence technology. For example, a fluorescent agent solution is irradiated with laser light to cause a fluorescent reaction.
And irradiating the fluorescent agent solutions with different concentrations under the same laser intensity to enable the fluorescent agent solutions to generate a fluorescence reaction, recording the fluorescent agent concentration and the corresponding fluorescence intensity, and establishing a relation between the fluorescent agent concentration and the fluorescence intensity.
Furthermore, the light of the non-fluorescent agent in the wave band induced by the exciting light can be filtered by a physical method, for example, a high-precision optical filter is adopted, so that the non-fluorescent agent is prevented from generating fluorescence and influencing a calibration result. The ambient noise is then removed by an algorithm to ensure the accuracy of the data. And finally, obtaining the fluorescence intensity of the fluorescent agent solution with different concentrations through experiments to construct a function model between the fluorescent agent concentration and the fluorescence intensity. And the accuracy of the established functional relation is ensured by repeating the calibration experiment.
According to one embodiment of the invention, the setting of multiple different concentrations of phosphor solution comprises:
the concentration of each of the fluorescent agent solutions was set at 10-5ppm to 10-1Between ppm.
According to an embodiment of the present invention, the detecting the fluorescence intensity corresponding to each fluorescer solution comprises:
and detecting the fluorescence intensity of each fluorescent agent solution by adopting a laser-induced fluorescence technology.
According to an embodiment of the present invention, the setting of the collection unit at the collection point in the chamber, and the preparation of the solution to be measured by using the collection unit after a preset time period, includes:
a container filled with pure water is arranged at a collection point to serve as the collection unit;
and taking the liquid in the container as the solution to be detected after a preset time.
Specifically, a container for containing pure water can be arranged at the collection point, pure water is added into the container, and after the liquid particles are settled at the collection point, the liquid particles are directly settled in the container and dissolved in the pure water to form a solution to be measured. So set up, the mode of obtaining the solution that awaits measuring is simple swift.
According to an embodiment of the present invention, the detecting the fluorescence intensity of the solution to be detected includes:
and detecting the fluorescence intensity of the solution to be detected by adopting a laser-induced fluorescence technology.
The method for detecting the liquid particles in the indoor flow field, provided by the embodiment of the invention, can be used for scattering the fluorescent agent standard solution indoors, such as in a passenger room, so that the liquid particles containing the fluorescent agent are formed indoors, such as in the passenger room. The motion situation of the liquid particles in the room under normal conditions can be simulated by utilizing the prepared liquid particles. And then collecting the settled liquid particles by using a collecting unit at a collecting point, and preparing the solution to be detected. The fluorescence intensity of the solution to be detected is detected, and whether the liquid particulate matters are settled at the collection point and the settlement amount can be simply and quickly judged based on the fluorescence intensity.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for detecting liquid particles in an indoor flow field according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The method for detecting liquid particles in the indoor flow field in the embodiment of the invention is described below with reference to fig. 1.
Specifically, the method for detecting the liquid particulate matters in the indoor flow field comprises the steps S100-S400.
And S100, preparing a fluorescent agent standard solution.
For example, the fluorescer may be added in water to prepare a fluorescer solution.
And S200, spreading a fluorescent agent standard solution indoors to form liquid particles.
Through scattering fluorescent agent standard solution to form liquid particulate matter and scatter indoor, can make the liquid particulate matter that has the fluorescent agent at indoor operation, with the operation condition of indoor liquid particulate matter under the simulation actual condition.
For example, a dispersion device may be used to disperse a standard solution of a fluorescent agent and form liquid particles.
Alternatively, the dispersion device may comprise a water pump and an atomizer connected to the water pump via a conduit. The fluorescent agent standard solution is pumped into the atomizer through the water pump, and the atomizer can atomize the fluorescent agent standard solution to form liquid particles and scatter the particles.
And S300, arranging an acquisition unit at an indoor acquisition point, and preparing the solution to be detected by using the acquisition unit after a preset time. The preset time length can be set according to the test requirement.
Along with the liquid particulate matters moving and settling indoors, if the liquid particulate matters can move to the collection point and settle in the collection unit, the solution to be detected prepared by the collection unit can generate a fluorescence reaction.
And S400, detecting the fluorescence intensity of the solution to be detected.
For example, the fluorescence intensity of the solution to be detected can be detected by a laser-induced fluorescence technique.
Further, the solution to be detected is irradiated by laser, so that the fluorescent agent in the solution to be detected generates a fluorescence reaction.
The method for detecting the liquid particles in the indoor flow field, provided by the embodiment of the invention, can be used for preparing the liquid particles by using the fluorescent agent standard solution and scattering the liquid particles in a room, such as a passenger room, and simulating the motion condition of the liquid particles in the room under the normal condition by using the prepared liquid particles. And collecting the settled liquid particles at a collecting point to prepare a solution to be detected. The fluorescence intensity of the solution to be detected is detected, and whether the liquid particulate matters are settled at the collection point and the settlement amount can be simply and quickly judged based on the fluorescence intensity. The propagation rule of the liquid particulate matters in the indoor flow field can be analyzed by comparing and analyzing the fluorescence intensity of the solution to be detected acquired at a plurality of acquisition points.
In addition, the fluorescent agent contained in the liquid particles can be detected at an extremely low concentration. Therefore, the fluorescence characteristic of the fluorescent agent is used for measuring the content of the liquid particulate matters settled in the solution to be measured, and higher accuracy can be obtained.
In some embodiments provided herein, prior to preparing the standard solution of fluorescent agent, further comprising:
and obtaining the mapping relation between the concentration of the fluorescent agent in the fluorescent agent solution and the fluorescence intensity.
The concentration of the fluorescent agent in the fluorescent agent solution is generally not directly detectable. Therefore, the mapping relation between the concentration of the fluorescent agent in the fluorescent agent solution and the fluorescence intensity can be established, so that the concentration of the fluorescent agent in the fluorescent agent solution can be obtained according to the detected fluorescence intensity of the fluorescent agent solution based on the mapping relation, and a basis is provided for quantitatively analyzing the sedimentation amount of the liquid particles.
After detecting the fluorescence intensity of the solution to be detected, the method further comprises the following steps:
and acquiring the concentration of the fluorescent agent of the solution to be detected according to the fluorescence intensity of the solution to be detected based on the acquired mapping relation.
Through the fluorescent agent concentration of the solution to be measured who obtains, can have comparatively audio-visual embodiment to the settlement volume of the liquid particulate matter of gathering the point to the researcher carries out research and analysis to the settlement volume of particulate matter. For example, by comparing the concentrations of the fluorescent agent in the solutions to be detected at the plurality of collection points, the difference of the sedimentation amount of the liquid particulate matters at each collection point can be obtained more intuitively.
In some embodiments, after obtaining the concentration of the fluorescent agent in the solution to be tested, the method further includes:
and acquiring the content of the fluorescent agent in the solution to be detected based on the concentration of the fluorescent agent in the solution to be detected and the volume of the solution to be detected.
Specifically, the fluorescer content in the solution to be detected can be obtained by multiplying the fluorescer concentration of the solution to be detected and the volume of the solution to be detected. The content of the settled liquid particles in the solution to be detected can be indirectly judged through the obtained content of the fluorescent agent in the solution to be detected.
Of course, in order to quantitatively analyze the settling amount of the liquid particulate matter in the solution to be detected, in some embodiments of the present invention, after obtaining the fluorescer content of the solution to be detected, the method further includes:
and acquiring the settling amount of the liquid particles in the solution to be detected based on the content of the fluorescent agent in the solution to be detected and the concentration of the fluorescent agent in the fluorescent agent standard solution.
Specifically, the product of the fluorescent agent concentration of the fluorescent agent standard solution and the volume of the fluorescent agent standard solution is the fluorescent agent content in the fluorescent agent standard solution. The concentration of the fluorescent agent in the liquid particulate matter is known, namely the concentration of the fluorescent agent in the fluorescent agent standard solution. Therefore, after the content of the fluorescent agent in the solution to be detected is obtained, the settling amount of the liquid particulate matter in the solution to be detected can be obtained according to the fluorescent agent content and the fluorescent agent concentration of the liquid particulate matter based on the formula.
So, the settlement of the liquid particulate matter of analysis measuring point that can be quantitative, the result is more directly perceived, accurate.
In some embodiments provided by the present invention, a collection unit is disposed at an indoor collection point, and after a preset time period, a solution to be measured is prepared by the collection unit, including:
and respectively arranging acquisition units at a plurality of indoor acquisition points, and respectively preparing corresponding solutions to be detected by using each acquisition unit after preset time.
Specifically, the settled liquid particles are respectively collected at a plurality of indoor collection points to respectively obtain corresponding solutions to be measured.
Further, the fluorescence intensity of each solution to be detected is detected, and based on the mapping relationship, the concentration of the fluorescent agent in each solution to be detected can be obtained according to the fluorescence intensity of each solution to be detected.
Further, based on the steps, the content of the fluorescent agent in each part of the solution to be detected and the sedimentation amount of the liquid particles can be obtained.
So set up, through the settlement volume that detects the liquid particulate matter of each gathering point to the settlement volume to each gathering point is makeed statistics of, can analyze out the settlement condition of liquid particulate matter at indoor each gathering point quantitatively, and then can analyze out the propagation law of liquid particulate matter indoor according to the settlement condition of each gathering point.
In some embodiments provided by the present invention, a collection unit is disposed at an indoor collection point, and after a preset time period, a solution to be measured is prepared by the collection unit, including:
and arranging a water condensation film as a collecting unit at the collecting point.
And dissolving the hydrogel into water after a preset time to prepare a solution to be detected.
Specifically, a water condensation film per unit area can be arranged at the collection point, and the water condensation film is used for collecting the settled liquid particles. And after the collection is finished, dissolving the hydrogel film in water, and simultaneously dissolving the fluorescent agent in the liquid particles in water, thereby obtaining the solution to be detected.
The water condensation film is in a solid state in a normal environment, so that the water condensation film is used for collecting settled liquid particles, and the condition that the liquid particles settle on the object surface in reality can be simulated. Meanwhile, the hydrogel film can be dissolved in water, so that liquid particles collected by the hydrogel film can be completely transferred into a solution to be detected, and the detection precision is improved.
In addition, the water condensation film is in a solid sheet shape in a normal environment, occupies small space and is more convenient to distribute at a plurality of collection points.
Further, when liquid particles are collected at a plurality of collection points, a unit area of the water condensation film is arranged at each collection point, and after collection is finished, each water condensation film is dissolved in pure water with the same volume so as to obtain a solution to be detected.
In some embodiments provided herein, obtaining a mapping between a concentration of a fluorescent agent in a fluorescent agent solution and a fluorescence intensity comprises:
multiple fluorescent agent solutions of different concentrations were set.
And detecting the fluorescence intensity corresponding to each fluorescent agent solution.
And fitting a mapping relation between the concentration of the fluorescent agent in the fluorescent agent solution and the fluorescence intensity.
Specifically, the fluorescer is prepared into fluorescer solutions with different gradients. The fluorescence intensity of the fluorescent agent solution with different concentrations can be measured by utilizing a laser-induced fluorescence technology. For example, a fluorescent agent solution is irradiated with laser light to cause a fluorescent reaction.
Further, the fluorescent agent solutions with different concentrations are irradiated under the same laser intensity, so that the fluorescent agent solutions generate a fluorescence reaction, the fluorescent agent concentration and the corresponding fluorescence intensity are recorded, and the relationship between the fluorescent agent concentration and the fluorescence intensity is fitted.
Furthermore, the light of the non-fluorescent agent in the laser in the wave band induced by the laser can be filtered by a physical method, for example, a high-precision optical filter is adopted, so that the non-fluorescent agent is prevented from generating fluorescence and influencing a calibration result. The ambient noise is then removed by an algorithm to ensure the accuracy of the data. And finally, obtaining the fluorescence intensity of the fluorescent agent solution with different concentrations through experiments, and fitting a function model between the fluorescent agent concentration and the fluorescence intensity. And the accuracy of the established function model is ensured by repeating the calibration experiment.
In some embodiments provided herein, providing multiple different concentrations of a fluorescer solution comprises:
the concentration of each fluorescent agent solution is set to 10-5ppm to 10-1Between ppm. Thus, the characteristics of the phosphor can be satisfied.
In some embodiments provided by the present invention, a collection unit is disposed at an indoor collection point, and after a preset time period, a solution to be measured is prepared by the collection unit, including:
and a container filled with pure water is arranged at the collection point as a collection unit.
And after a preset time, taking the liquid in the container as the solution to be detected.
Specifically, a container for containing pure water can be arranged at the collection point, pure water is added into the container, and after the liquid particles are settled at the collection point, the liquid particles are directly settled in the container and dissolved in the pure water to form a solution to be measured. So set up, the mode of obtaining the solution that awaits measuring is simple swift.
Further, when liquid particulate matter is collected at a plurality of collection points, the same container can be used for containing water with the same volume at each collection point so as to collect settled liquid particulate matter at each collection point.
Of course, the above steps may be combined, for example, in an embodiment of the present invention, a method for detecting liquid particulate matter in an indoor flow field includes:
setting multiple fluorescent agent solutions with different concentrations, wherein the concentration of each fluorescent agent solution is set at 10-5ppm to 10- 1Between ppm.
And detecting the fluorescence intensity of each fluorescent agent solution by adopting a laser-induced fluorescence technology.
And establishing a mapping relation between the concentration of the fluorescent agent in the fluorescent agent solution and the fluorescence intensity.
A standard solution of the fluorescent agent was prepared.
And preparing the standard solution of the fluorescent agent into liquid particles and spreading the particles indoors.
And collecting the settled liquid particles by using a hydraulic film at each collecting point.
And respectively dissolving each water condensation film in water to respectively prepare the solution to be detected corresponding to each collection point.
And detecting the fluorescence intensity of each solution to be detected by adopting a laser-induced fluorescence technology.
And based on the mapping relation, obtaining the concentration of the fluorescent agent of each solution to be detected according to the fluorescence intensity of each solution to be detected.
And acquiring the content of the fluorescent agent in the solution to be detected based on the concentration of the fluorescent agent in the solution to be detected and the volume of the solution to be detected.
And acquiring the settling amount of the liquid particles in the solution to be detected based on the content of the fluorescent agent in the solution to be detected and the concentration of the fluorescent agent in the fluorescent agent standard solution.
The method for detecting the liquid particles in the indoor flow field, provided by the embodiment of the invention, can be used for preparing the liquid particles by using the fluorescent agent standard solution and scattering the liquid particles in a room, such as a passenger room, and simulating the motion condition of the liquid particles in the room under the normal condition by using the prepared liquid particles. And collecting the settled liquid particles at a collecting point to prepare a solution to be detected. And detecting the fluorescence intensity of the solution to be detected, acquiring the concentration of the fluorescent agent of the solution to be detected based on the mapping relation between the fluorescence intensity and the concentration of the fluorescent agent, and judging whether the liquid particulate matters are settled at the collecting point and the settlement amount based on the concentration of the fluorescent agent.
Through detecting the settlement of the liquid particulate matter of each collection point and counting the settlement of each collection point, the settlement condition of the liquid particulate matter at each indoor collection point can be quantitatively analyzed, and then the propagation rule of the liquid particulate matter indoors can be analyzed according to the settlement condition of each collection point.
In addition, the fluorescent agent contained in the liquid particles can be detected at an extremely low concentration, so that the fluorescence characteristic of the fluorescent agent is used for measuring the liquid particles settled in the solution to be detected, and higher accuracy can be obtained.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will 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 of the embodiments of the present invention.
Claims (10)
1. A method for detecting liquid particles in an indoor flow field is characterized by comprising the following steps:
preparing a standard solution of a fluorescent agent;
dispersing the fluorescent agent standard solution in a chamber to form liquid particles;
arranging an acquisition unit at an indoor acquisition point, and preparing a solution to be detected by using the acquisition unit after a preset time;
and detecting the fluorescence intensity of the solution to be detected.
2. The method for detecting liquid particles in an indoor flow field according to claim 1, further comprising, before the preparing a standard solution of a fluorescent agent:
acquiring a mapping relation between the concentration of a fluorescent agent in a fluorescent agent solution and fluorescence intensity;
after the detecting the fluorescence intensity of the solution to be detected, the method further comprises the following steps:
and acquiring the concentration of the fluorescent agent of the solution to be detected according to the fluorescence intensity of the solution to be detected based on the mapping relation.
3. The method for detecting the liquid particles in the indoor flow field according to claim 2, wherein after the obtaining of the concentration of the fluorescent agent in the solution to be detected, the method further comprises:
and acquiring the fluorescent agent content of the solution to be detected based on the fluorescent agent concentration of the solution to be detected and the volume of the solution to be detected.
4. The method for detecting the liquid particles in the indoor flow field according to claim 3, wherein after the obtaining of the content of the fluorescent agent in the solution to be detected, the method further comprises:
and acquiring the settling amount of the liquid particles in the solution to be detected based on the content of the fluorescent agent in the solution to be detected and the concentration of the fluorescent agent in the fluorescent agent standard solution.
5. The method for detecting the liquid particles in the indoor flow field according to claim 1, wherein a collection unit is arranged at a collection point in the chamber, and after a preset time period, a solution to be detected is prepared by the collection unit, and the method comprises the following steps:
setting a water condensation film as the acquisition unit at an acquisition point;
and dissolving the water-gel film in water after a preset time so as to prepare the solution to be detected.
6. The method for detecting the liquid particles in the indoor flow field according to claim 1, wherein a collection unit is arranged at a collection point in the chamber, and after a preset time period, a solution to be detected is prepared by the collection unit, and the method comprises the following steps:
a container filled with pure water is arranged at a collection point to serve as the collection unit;
and taking the liquid in the container as the solution to be detected after a preset time.
7. The method for detecting the liquid particles in the indoor flow field according to claim 2, wherein the obtaining of the mapping relationship between the concentration of the fluorescent agent in the fluorescent agent solution and the fluorescence intensity comprises:
setting a plurality of fluorescent agent solutions with different concentrations;
detecting the fluorescence intensity corresponding to each fluorescent agent solution;
and fitting a mapping relation between the concentration of the fluorescent agent in the fluorescent agent solution and the fluorescence intensity.
8. The method for detecting liquid particles in an indoor flow field according to claim 7, wherein the step of providing a plurality of fluorescent agent solutions with different concentrations comprises the steps of:
the concentration of each of the fluorescent agent solutions was set at 10-5ppm to 10-1Between ppm.
9. The method for detecting the liquid particles in the indoor flow field according to claim 7, wherein the detecting the fluorescence intensity corresponding to each solution of the fluorescent agent comprises:
and detecting the fluorescence intensity of each fluorescent agent solution by adopting a laser-induced fluorescence technology.
10. The method for detecting the liquid particles in the indoor flow field according to any one of claims 1 to 9, wherein a collection unit is arranged at a collection point in the chamber, and after a preset time period, a solution to be detected is prepared by using the collection unit, and the method comprises the following steps:
and respectively arranging the acquisition units at a plurality of acquisition points in the room, and respectively preparing the corresponding solution to be detected by using each acquisition unit after a preset time.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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