CN111487168A - System and method for testing propagation rule of pathogen-carrying particulate matters in passenger room of high-speed train - Google Patents

Abstract

The invention discloses a system and a method for testing the propagation rule of pathogen-carrying particles in a high-speed train passenger room, wherein the test system comprises a laboratory real-vehicle test module and a line field test module; the laboratory real vehicle test module comprises a first humidity detection unit and a laser-induced fluorescence detection unit; the line field test module comprises a first field test module and a second field test module; the first field test module comprises a second humidity detection unit, a tracer gas detection unit and a first air collection detection unit; the second field test module comprises a third humidity detection unit, a second air collection detection unit and a bioaerosol monitoring unit. According to the invention, by researching the propagation rule of pathogen-carrying particles in the passenger room of the high-speed train, scientific guidance can be provided for the research of the control strategy of the air environment in the passenger room of the train in the virus micelle environment, so that the risk of passenger cross infection is reduced, and the public health safety level of the environment in the passenger room of the high-speed train is improved.

Description

Test system and method for transmission law of pathogen-carrying particulate matter in passenger compartment of high-speed train

technical field

The invention particularly relates to a system and method for testing the propagation law of pathogen-carrying particles in a passenger compartment of a high-speed train.

Background technique

At present, with the development of medical science and technology, human beings have overcome many infectious diseases that endanger human health. However, viral infectious diseases still have a high mortality rate due to their strong contagiousness and high unknowns. Therefore, public health security events are still global events that threaten the safety of all human life.

Nowadays, with the continuous development of high-speed rail technology, high-speed rail has become the first choice for people to travel. The high-speed train has a high density of people and high air tightness. Once there are patients with respiratory infectious diseases on the train, it will definitely affect the rest of the passengers. health posed a threat of potential infection. Therefore, it is of great practical significance to study the virus transmission law in the environment of high-speed railway passenger cars to improve the public safety level in the passenger car and protect the life and health of passengers.

The particularity of the high-speed train passenger compartment structure and environment determines that it cannot directly discharge the exhaust air to the outside like aircraft cabins and layered ventilation buildings, but most of it enters the air conditioning system again through the return air duct for recycling. When the virus micelles spread in the passenger compartment of the train, they will also enter the air-conditioning system with the airflow and circulate back and forth, making the air-conditioning system a new way of transmission. Methods for controlling the spread of pollutants in buildings and engine rooms cannot be directly applied to high-speed trains, and targeted and systematic research is required. Therefore, the propagation law of virus micelles under the action of high-speed train air conditioning system needs to be studied and solved urgently.

Based on the influence of medical virus concentration on various high-risk groups, and on the premise of ensuring the basic comfort of passengers, in order to reduce the risk of cross-infection of passengers, it is urgent to carry out research on indoor air environment control strategies for passengers in a virus micromass environment.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a test system and method for the transmission law of pathogen-carrying particulate matter in high-speed train passenger compartments in order to fill the gap in the prior art for the experimental research on the transmission mechanism and suppression and control technology of pathogen-carrying particulate matter in the passenger compartment of high-speed trains. Methods The research on the transmission law of pathogen-carrying particulate matter in the passenger compartment of high-speed trains can provide scientific guidance for the study of indoor air environment control strategies for passengers in the environment of virus micromass, so as to reduce the risk of cross-infection of passengers and improve the public safety of the indoor environment of high-speed trains. Hygiene safety level.

For solving the above-mentioned technical problems, the technical scheme adopted in the present invention is:

A test system for the propagation law of pathogen-carrying particulate matter in a passenger compartment of a high-speed train is characterized by including a laboratory real vehicle test module, and the laboratory real vehicle test module includes a first humidity detection unit and a laser-induced fluorescence detection unit, wherein:

The first humidity detection unit includes a first atomization unit, a plurality of first hygrometers, and a first calculation unit; the first atomization unit is set at a preset position in the laboratory vehicle compartment and is used to atomize water into aerosol; multiple The first hygrometers are distributed at each measuring point in the cabin of the actual laboratory vehicle and are used to measure the humidity of the corresponding measuring points; the first calculation unit is used to calculate the corresponding measurement points in the cabin of the actual laboratory vehicle according to the collected data of the first hygrometer. The time-averaged concentration of the aerosol at the measurement point;

The laser-induced fluorescence detection unit includes a second atomization unit, a PIV imaging device and a second computing unit; the second atomization unit is set at a preset position in the laboratory vehicle compartment and is used to atomize the water added with the fluorescent agent into an aerosol The PIV imaging device is used to scan the images of the measuring points of interest in the cabin of the actual vehicle in the laboratory; the second computing unit is used to obtain the propagation law of aerosols at each measuring point according to the images collected by the PIV imaging device.

Further, it also includes a line field test module, the line field test module includes a first field test module, and the first field test module includes a second humidity detection unit, a tracer gas detection unit and a first air collection detection unit, wherein :

The second humidity detection unit includes a third atomizing unit, a plurality of second hygrometers and a third computing unit; the third atomizing unit is set at a preset position in the passenger compartment of the line site and is used to atomize water into aerosol; A second hygrometer is distributed at each measuring point in the passenger compartment of the line site and is used to measure the humidity of the corresponding measuring point; the third calculation unit is used to calculate the corresponding measurement point in the passenger compartment of the line site according to the collected data of the second hygrometer. The time-averaged concentration of the aerosol at the measurement point;

The tracer gas detection unit includes a gas generator, a gas sampler and a gas measurement detector; the gas generator is set at a preset position in the passenger compartment of the line site and is used to generate tracer gas; the gas sampler is used to collect the line site without passengers The gas at the measuring point of interest in the compartment; the gas measurement detector is used to detect the gas collected by the gas sampler, and obtain the movement law of the tracer gas;

The first air collection detection unit includes a fourth atomization unit, a first suction device, a first storage bag and a first powder measurement unit; the fourth atomization unit is set at a preset position in the passenger compartment of the line site and is used to add The water of a single powder that is harmless to human body is atomized into aerosol; the first suction device is used to inhale the gas at the point of interest in the passenger compartment without the line site into the first storage bag; the first powder measurement unit is used to The composition and concentration of the gas in the first storage bag are measured, and the time-averaged concentration of the powder at the corresponding measuring point in the passenger compartment of the line site is obtained.

Further, it also includes a line field test module, the line field test module includes a second field test module, and the second field test module includes a third humidity detection unit, a second air collection detection unit and a bioaerosol monitoring unit, wherein :

The third humidity detection unit includes a fifth atomization unit, a plurality of third hygrometers and a fourth calculation unit; the fifth atomization unit is set at a preset position in the passenger compartment on the line site and is used to atomize water into aerosol; A third hygrometer is distributed at each measuring point in the passenger compartment on the line site and is used to measure the humidity of the corresponding measuring point; the fourth calculation unit is used to calculate the corresponding measuring point in the passenger compartment on the line site according to the collected data of the third hygrometer The time-averaged concentration of the aerosol at the measurement point;

The second air collection detection unit includes a sixth atomization unit, a second suction device, a second storage bag and a second powder measuring unit; the sixth atomization unit is set at a preset position in the passenger compartment on the line site and is used to add The water of a single powder that is harmless to the human body is atomized into aerosol; the second suction device is used to inhale the gas at the point of interest in the passenger compartment on the line site into the second storage bag; the second powder measuring unit is used to Measure the composition and concentration of the gas in the second storage bag, and obtain the time-averaged concentration of the powder at the corresponding measuring point in the passenger compartment on the line;

The bioaerosol monitoring unit includes a bioaerosol monitor, and the bioaerosol monitor is used for real-time monitoring of the concentration of microorganisms in the air at the points of interest in the passenger compartment on the line site.

Based on the same inventive concept, the present invention also provides a test method for the propagation law of pathogen-carrying particulate matter in a passenger compartment of a high-speed train, which is characterized by including a laboratory real vehicle test method, and the laboratory real vehicle test method includes a first humidity detection process and Laser-induced fluorescence detection process in which:

The first humidity detection process includes: using a first atomizing unit arranged at a preset position in the laboratory vehicle compartment to atomize water into aerosol; using a plurality of measurement points scattered in the laboratory vehicle compartment The first hygrometer measures the humidity of the corresponding measuring point; according to the collected data of the first hygrometer, the time-averaged concentration of the aerosol corresponding to the measuring point in the cabin of the actual vehicle in the laboratory is calculated;

The laser-induced fluorescence detection process includes: using a second atomization unit located in a preset position in the laboratory vehicle compartment to atomize the water with added fluorescent agent into aerosol; using PIV imaging equipment to scan the attention in the laboratory vehicle compartment The image of the measuring point; the aerosol propagation law at each measuring point is obtained according to the image collected by the PIV imaging equipment.

Further, it also includes a line field test method, the line field test method includes a first field test method, and the first field test method includes a second humidity detection process, a tracer gas detection process and a first air collection detection process, wherein :

The second humidity detection process includes: using a third atomizing unit arranged at a preset position in the passenger-free compartment of the line site to atomize water into aerosol; The second hygrometer measures the humidity of the corresponding measuring point; according to the collected data of the second hygrometer, calculates the time-averaged concentration of the aerosol at the corresponding measuring point in the passenger compartment of the line site without passengers;

The tracer gas detection process includes: using a gas generator set at a preset position in the passenger compartment on the line to generate tracer gas; using a gas sampler to collect the gas at the point of interest in the passenger compartment on the line; using gas measurement to detect The instrument detects the gas collected by the gas sampler and obtains the movement law of the tracer gas;

The first air collection and detection process includes: using a fourth atomizing unit located at a preset position in the passenger-free compartment on the line site to atomize the water added with a single powder that is not harmful to human body into aerosol; using the first suction device to The gas at the point of interest in the passenger compartment of the line site is sucked into the first storage bag; the first powder measuring unit is used to measure the composition and concentration of the gas in the first storage bag, and the corresponding measurement in the passenger compartment of the line site is obtained. The time-averaged concentration of the powder.

Further, it also includes a line field test method, the line field test method includes a second field test method, and the second field test method includes a third humidity detection process, a second air collection detection process, and a bioaerosol monitoring process, wherein :

The third humidity detection process includes: atomizing water into aerosol using a fifth atomizing unit located at a preset position in the passenger compartment on the line site; The third hygrometer measures the humidity of the corresponding measuring point; according to the collected data of the third hygrometer, the time-averaged concentration of the aerosol at the corresponding measuring point in the passenger compartment of the line site is calculated;

The second air collection and detection process includes: using a sixth atomizing unit located at a preset position in the passenger compartment on the line site to atomize the water added with a single powder that is not harmful to human body into aerosol; using the second suction device to The gas at the point of interest in the passenger compartment at the line site is sucked into the second storage bag; the second powder measuring unit is used to measure the composition and concentration of the gas in the second storage bag, and the corresponding measurements in the passenger compartment at the line site are obtained. The time-averaged concentration of the powder;

The bioaerosol monitoring process includes: using a bioaerosol monitor to monitor the concentration of microorganisms in the air at the points of interest in the passenger compartment of the line site in real time.

Compared with the prior art, the present invention studies the propagation law of pathogen-carrying particulate matter in the passenger compartment of a high-speed train through two test methods, a laboratory real vehicle test and a line field test, which can be used to control the indoor air environment of the passenger compartment under the virus micelle environment. Strategic research provides scientific guidance to reduce the risk of occupant cross-infection and improve the public health safety level of high-speed train passenger indoor environment.

Description of drawings

FIG. 1 is a schematic structural diagram of an embodiment of the test system of the present invention.

Among them, 1 is the laboratory real vehicle test module, 11 is the first humidity detection unit, 111 is the first atomization unit, 112 is the first hygrometer, 113 is the first calculation unit, 12 is the laser-induced fluorescence detection unit, 121 is the second atomizing unit, 122 is the PIV imaging device, 123 is the second computing unit, 2 is the line field test module, 21 is the first field test module, 211 is the second humidity detection unit, and 2111 is the third atomizing unit , 2112 is the second hygrometer, 2113 is the third calculation unit, 212 is the tracer gas detection unit, 2121 is the gas generator, 2122 is the gas sampler, 2123 is the gas measurement detector, 213 is the first air collection detection unit , 2131 is the fourth atomizing unit, 2132 is the first suction device, 2133 is the first storage bag, 2134 is the first powder measuring unit, 22 is the second field test module, 221 is the third humidity detection unit, 2211 is the The fifth atomizing unit, 2212 is the third hygrometer, 2213 is the fourth computing unit, 222 is the second air collection and detection unit, 2221 is the sixth atomizing unit, 2222 is the second suction device, and 2223 is the second storage Bag, 2224 is a second powder measuring unit, 223 is a bioaerosol monitoring unit, 2231 is a bioaerosol monitor.

Detailed ways

The present invention will be further described below in conjunction with the embodiments.

As shown in FIG. 1 , the present invention conducts research on the propagation law of pathogens in the indoor environment of high-speed train passengers through two parts: laboratory actual vehicle test and line field test.

As shown in Figure 1, the test system for the propagation law of pathogen-carrying particulate matter in the passenger compartment of a high-speed train includes a laboratory real vehicle test module 1 and a line field test module 2.

The laboratory real vehicle test module 1 includes a first humidity detection unit 11 and a laser-induced fluorescence detection unit 12, wherein:

The first humidity detection unit 11 includes a first atomization unit 111, a plurality of first hygrometers 112 and a first calculation unit 113; the first atomization unit 111 is set at a preset position in the laboratory vehicle compartment and is used to spray water mist. aerosol; a plurality of first hygrometers 112 are distributed at each measuring point in the cabin of the actual laboratory vehicle and used to measure the humidity of the corresponding measuring point; the first calculation unit 113 is used for collecting data according to the first hygrometer 112 Calculate the time-averaged concentration of aerosols at the corresponding measurement points in the cabin of the laboratory vehicle;

The laser-induced fluorescence detection unit 12 includes a second atomization unit 121, a PIV imaging device 122, and a second computing unit 123; The water is atomized into aerosol; the PIV imaging device 122 is used to scan the images of the measuring points of interest in the cabin of the actual vehicle in the laboratory; the second computing unit 123 is used to obtain the aerosol propagation at each measuring point according to the collected images of the PIV imaging device 122 law.

The line field test module 2 is divided into two types, namely, a first field test module 21 and a second field test module 22 according to whether there is a passenger-free carriage specially used for the test.

The first field test module 21 includes a second humidity detection unit 211, a tracer gas detection unit 212 and a first air collection detection unit 213, wherein:

The second humidity detection unit 211 includes a third atomization unit 2111, a plurality of second hygrometers 2112 and a third calculation unit 2113; the third atomization unit 2111 is set at a preset position in the passenger compartment of the line site and is used to spray water mist form aerosol; a plurality of second hygrometers 2112 are distributed at each measuring point in the passenger compartment of the line site and used to measure the humidity of the corresponding measuring point; the third computing unit 2113 is used for collecting data according to the second hygrometer 2112 Calculate the time-averaged concentration of the aerosol at the corresponding measuring point in the passenger compartment of the line site;

The tracer gas detection unit 212 includes a gas generator 2121, a gas sampler 2122 and a gas measurement detector 2123; the gas generator 2121 is set at a preset position in the passenger compartment of the line site and is used to generate tracer gas; the gas sampler 2122 is used for There is no gas of interest in the passenger compartment at the collection line site; the gas measurement detector 2123 is used to detect the gas collected by the gas sampler 2122, and obtain the movement law of the tracer gas;

The first air collection detection unit 213 includes a fourth atomizing unit 2131, a first suction device 2132, a first storage bag 2133 and a first powder measuring unit 2134; It is positioned and used to atomize the water added with a single powder that is not harmful to the human body into aerosol; the first suction device 2132 is used to suck the gas of the point of interest in the passenger compartment without the line site into the first storage bag 2133; The first powder measuring unit 2134 is used to measure the composition and concentration of the gas in the first storage bag 2133, and obtain the time-averaged concentration of the powder at the corresponding measuring point in the passenger compartment of the line site.

The second field test module 22 includes a third humidity detection unit 221, a second air collection detection unit 222 and a bioaerosol monitoring unit 223, wherein:

The third humidity detection unit 221 includes a fifth atomization unit 2211, a plurality of third hygrometers 2212 and a fourth calculation unit 2213; the fifth atomization unit 2211 is set at a preset position in the passenger compartment at the line site and is used to spray water mist A plurality of third hygrometers 2212 are distributed at each measuring point in the passenger compartment of the line site and are used to measure the humidity of the corresponding measuring points; the fourth computing unit 2213 is used for collecting data according to the third hygrometer 2212 Calculate the time-averaged concentration of the aerosol at the corresponding measuring point in the passenger compartment on the line;

The second air collection detection unit 222 includes a sixth atomization unit 2221, a second suction device 2222, a second storage bag 2223 and a second powder measuring unit 2224; The second suction device 2222 is used to inhale the gas at the point of interest in the passenger compartment on the line site into the second storage bag 2223; The second powder measuring unit 2224 is used to measure the composition and concentration of the gas in the second storage bag 2223, and obtain the time-averaged concentration of the powder at the corresponding measuring point in the passenger compartment on the line;

The bioaerosol monitoring unit 223 includes a bioaerosol monitor 2231, and the bioaerosol monitor 2231 is used for real-time monitoring of the concentration of microorganisms in the air at the point of interest in the passenger compartment on the line site.

Correspondingly, the present invention also provides a test method for the propagation law of pathogen-carrying particulate matter in the passenger compartment of a high-speed train, including a laboratory real vehicle test method and a line field test method.

The laboratory real vehicle test method includes the first humidity detection process and the laser-induced fluorescence detection process, wherein:

The first humidity detection process is used for the humidity detection in the passenger compartment of the actual laboratory vehicle, which includes: using the first atomizing unit 111 arranged at a preset position in the actual vehicle compartment of the laboratory to atomize water into aerosol; A plurality of first hygrometers 112 at each measuring point at a typical position in the cabin of the actual vehicle in the laboratory (the measuring point position in the embodiment is determined according to the EN standard, a total of 15 measuring points) measures the humidity of the corresponding measuring point; according to the first hygrometer The collected data of 112 is post-processed to calculate the time-averaged concentration of aerosols in the cabin of the actual vehicle in the laboratory that propagate to these corresponding measuring points (subject to the sampling period of the first hygrometer 112, multiple samples can be continuously sampled. Concentration, made into equivalent time-varying concentration), to provide experimental verification basis for subsequent numerical simulation results. The test technology has a short preparation period and low cost.

The first atomization unit 111 adopts a medical atomizer or a humidifier, and the diameter of the particles generated by the medical atomizer is 10 microns; the diameter of the particles generated by the humidifier is 50-300 microns. The accuracy of the first hygrometer 112 is 2.5%, and the sampling frequency is 5 seconds.

The laser-induced fluorescence (PLIF) detection process includes: adding a fluorescent agent to water, and atomizing the water with the fluorescent agent added into aerosol by using the second atomizing unit 121 set at a preset position in the laboratory vehicle compartment; using PIV imaging The device 122 scans the images of the measuring points of interest in the cabin of the actual vehicle in the laboratory; and obtains the propagation law of the aerosol at each measuring point according to the images collected by the PIV imaging device 122 . The test technology is advanced and can effectively distinguish particle diameters.

The second atomizing unit 121 also adopts a medical atomizer or humidifier, and its specifications are the same as those of the first atomizing unit 111 . The PIV imaging device 122 can be based on the existing PIV device, adding a laser light source and polarizer.

The line field test method is divided into the first field test method and the second field test method according to whether there are no passenger cars specially used for the test.

For the line field test, if there are no passenger cars that can be used exclusively for the test, select 1-2 cars for the first field test method.

The first field test method includes a second humidity detection process, a tracer gas detection process, and a first air collection detection process, wherein:

The second humidity detection process is similar to the method principle of the first humidity detection process, which includes: using a third atomizing unit 2111 (same structure and model as the first atomizing unit 111 ) located at a preset position in the passenger compartment of the line site Atomize water into aerosol; use a plurality of second hygrometers 2112 distributed at each measuring point in the passenger compartment of the line site to measure the humidity of the corresponding measuring points; according to the collected data of the second hygrometer 2112 The time-averaged aerosol concentration at the corresponding measurement point in the passenger compartment;

The tracer gas detection process includes: selecting sulfur hexafluoride (SF6) with good safety and stability as the tracer gas. Use the gas generator 2121 at the preset position in the passenger compartment on the line to generate tracer gas; use the gas sampler 2122 to collect the gas at the point of interest in the passenger compartment on the line; use the gas measurement detector 2123 to sample the gas The gas collected by the instrument 2122 is detected, and the movement law of the tracer gas is obtained;

The first air collection and detection process includes: adding a single direct non-hazardous powder prepared in advance into the water, and using the fourth atomizing unit 2131 (same structure and model as the first atomizing unit 111) located in a preset position in the passenger compartment of the line site. ) atomize the water added with a single powder that is harmless to the human body into an aerosol; set a first suction device 2132 at the peripheral position of the measuring point, and use the first suction device 2132 to remove the attention of the measuring point in the passenger compartment at the line site. The gas is inhaled into the first storage bag 2133; the first storage bag 2133 is sent to the detection mechanism, and the first powder measuring unit 2134 is used to measure the composition and concentration of the gas in the first storage bag 2133, and reversely obtain the line site without The time-averaged concentration of powder at the corresponding measuring point in the passenger compartment.

For the line field test, if there are no passenger cars dedicated to the test, the second field test method is selected.

The second field test method includes a third humidity detection process, a second air collection detection process and a bioaerosol monitoring process, wherein:

The method principle of the third humidity detection process is similar to that of the first humidity detection process. There are multiple third hygrometers 2212 at each measuring point in the passenger compartment on the line site to measure the humidity of the corresponding measuring points; according to the collected data of the third hygrometer 2212, the time-averaged aerosol concentration of the corresponding measuring points in the passenger compartment on the line site is calculated ;

The second air collection and detection process is similar to the method principle of the first air collection and detection process, which includes: adding a single direct non-hazardous powder prepared in advance into the water, and using a sixth atomization set at a preset position in the passenger compartment on the line site The unit 2221 (same structure and model as the first atomizing unit 111) atomizes the water added with a single powder that is harmless to the human body into an aerosol; a second suction device 2222 is set around the measuring point, and the second suction device is used. 2222 Inhale the gas at the point of interest in the passenger compartment on the line into the second storage bag 2223; send the second storage bag 2223 to the detection mechanism, and use the second powder measuring unit 2224 to measure the gas in the second storage bag 2223. Measure the composition and concentration, and inversely obtain the time-averaged concentration of the powder at the corresponding measuring point in the passenger compartment on the line;

The bioaerosol monitoring process includes: using the bioaerosol monitor 2231 (measured particle size concentration range of 0.5-10 microns) to monitor the concentration of microorganisms in the air at the points of interest in the passenger compartment on the line site, and directly obtain the high-speed train passenger compartment Propagation of aerosols in the environment.

Example 1:

Taking the model CR400AF Chinese standard EMU as an example, the laboratory real vehicle test is carried out.

First of all, the first humidity detection is carried out in the cabin, the water is atomized into aerosol by a medical atomizer or a humidifier, and the change of humidity is measured at a typical position in the car (determined according to the EN standard, a total of 15 measuring points), After post-processing, the time-averaged concentration of the aerosol propagating to these positions is obtained (subject to the sampling period of the first hygrometer 112, multiple concentrations can be continuously sampled to make an equivalent time-varying concentration), which is provided for subsequent numerical simulation results. Experimental verification basis.

Then, the second-stage laser-induced fluorescence (PLIF) method of the laboratory real vehicle test was carried out, the fluorescent agent was added to the water, and the water was atomized into an aerosol by an atomizer or a humidifier, and an image was formed by scanning with an imaging device to obtain aerosol. Propagation laws of sols.

Example 2:

Taking the model CR400BF Chinese standard EMU as an example, the actual vehicle test is carried out.

Select the line field test with no passenger cars available for the test, and choose 1-2 cars to carry out the test.

First, carry out the second humidity detection in the cabin, atomize the water into aerosol through a medical atomizer or a humidifier, and measure the change of humidity at a typical position in the vehicle (determined according to the EN standard, a total of 15 measuring points), After post-processing, the time-averaged concentrations of the aerosols propagating to these locations are obtained (subject to the sampling period of the second hygrometer 2112, multiple concentrations can be continuously sampled to make equivalent time-varying concentrations), which provides the results of subsequent numerical simulations. Experimental verification basis.

Then, the tracer gas was detected, and sulfur hexafluoride (SF6) with good safety and stability was selected as the tracer gas. Select INNOVA1412 infrared photoacoustic spectrum gas measurement detector 2123 and INNOVA1309 multi-channel gas sampler 2122 as the measuring instruments for tracer gas sampling and detection, and obtain the movement law of tracer gas.

Finally, carry out the air collection test, add the single direct non-hazardous powder prepared in advance into the water, and atomize the water into aerosol through the portable atomizer or humidifier, and pass the first suction device 2132 at the peripheral position of the measurement point. Collect for a certain period of time, put it into the first storage bag 2133, send it to the detection mechanism to detect the composition and concentration, and invert the time-averaged concentration of the measurement point.

The embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than limiting. Under the inspiration of the present invention, without departing from the scope of protection of the spirit of the present invention and the claims, many forms can be made, which all fall within the protection scope of the present invention.

Claims (6)

1. a high-speed train passenger compartment carrying pathogenic particles transmission law test system, is characterized in that, comprises laboratory real vehicle test module (1), and this laboratory real vehicle test module (1) comprises the first humidity detection unit (11) and a laser-induced fluorescence detection unit (12), wherein: The first humidity detection unit (11) includes a first atomization unit (111), a plurality of first hygrometers (112) and a first calculation unit (113); the first atomization unit (111) is installed in a laboratory vehicle A preset position in the compartment is used for atomizing water into aerosol; a plurality of first hygrometers (112) are distributed at each measuring point in the compartment of the actual laboratory vehicle and are used to measure the humidity of the corresponding measuring point; a first computing unit (113) for calculating the time-averaged concentration of the aerosol at the corresponding measurement point in the cabin of the laboratory real vehicle according to the collected data of the first hygrometer (112); The laser-induced fluorescence detection unit (12) includes a second atomization unit (121), a PIV imaging device (122), and a second computing unit (123); the second atomization unit (121) is provided in a laboratory vehicle compartment for pre-production. set the position and use for atomizing the water with added fluorescent agent into aerosol; PIV imaging device (122) is used for scanning the image of the interested measuring point in the cabin of the laboratory real vehicle; the second computing unit (123) is used for imaging according to PIV The acquisition image of the device (122) obtains the propagation law of the aerosol at each measuring point. 2. The test system for carrying pathogen particles in the passenger compartment of a high-speed train as claimed in claim 1, further comprising a line field test module (2), and the line field test module (2) comprises a first field test module (2). 21), the first field test module (21) comprises a second humidity detection unit (211), a tracer gas detection unit (212) and a first air collection detection unit (213), wherein: The second humidity detection unit (211) includes a third atomizing unit (2111), a plurality of second hygrometers (2112), and a third computing unit (2113); the third atomizing unit (2111) is located at the line site without passengers A preset position in the carriage and used to atomize water into aerosol; a plurality of second hygrometers (2112) are distributed at each measuring point in the passenger-free carriage on the line site and used to measure the humidity of the corresponding measuring point; the third computing unit (2113) is used to calculate the time-averaged concentration of the aerosol at the corresponding measuring point in the passenger compartment of the line site according to the collected data of the second hygrometer (2112); The tracer gas detection unit (212) includes a gas generator (2121), a gas sampler (2122), and a gas measurement detector (2123); the gas generator (2121) is arranged at a preset position in the passenger compartment of the line site and used for The tracer gas is generated; the gas sampler (2122) is used to collect the gas at the point of interest in the passenger compartment without the line site; the gas measurement detector (2123) is used to detect the gas collected by the gas sampler (2122), and Obtain the motion law of the tracer gas; The first air collection detection unit (213) includes a fourth atomization unit (2131), a first suction device (2132), a first storage bag (2133) and a first powder measuring unit (2134); the fourth atomization unit (2131) is set at a preset position in the passenger compartment of the line site and is used to atomize the water added with a single powder that is not harmful to the human body into aerosol; the first suction device (2132) is used for the line site in the passenger compartment of the line site. The gas at the measuring point of interest is inhaled into the first storage bag (2133); the first powder measuring unit (2134) is used to measure the composition and concentration of the gas in the first storage bag (2133), and obtain no passengers on the line The time-averaged concentration of powder at the corresponding measuring point in the carriage. 3. The test system for the propagation law of pathogen particles in the passenger compartment of a high-speed train as claimed in claim 1 or 2, characterized in that, further comprising a line field test module (2), and this line field test module (2) comprises a second field test Module (22), the second field test module (22) comprises a third humidity detection unit (221), a second air collection detection unit (222) and a bioaerosol monitoring unit (223), wherein: The third humidity detection unit (221) includes a fifth atomization unit (2211), a plurality of third hygrometers (2212), and a fourth calculation unit (2213); the fifth atomization unit (2211) is located at the line site with passengers A preset position in the passenger compartment is used to atomize water into aerosol; a plurality of third hygrometers (2212) are distributed at each measuring point in the passenger compartment on the line site and are used to measure the humidity of the corresponding measuring point; the fourth calculation unit (2213) is used to calculate the time-averaged concentration of the aerosol at the corresponding measuring point in the passenger compartment on the line site according to the collected data of the third hygrometer (2212); The second air collection detection unit (222) includes a sixth atomization unit (2221), a second suction device (2222), a second storage bag (2223) and a second powder measuring unit (2224); the sixth atomization unit (2221) is set at a preset position in the passenger compartment on the line site and is used to atomize the water added with a single powder that is not harmful to human body into aerosol; the second suction device (2222) is used for the line site There is a passenger compartment in the passenger compartment The gas at the measuring point of interest is sucked into the second storage bag (2223); the second powder measuring unit (2224) is used to measure the composition and concentration of the gas in the second storage bag (2223), and obtain the number of passengers on the line The time-averaged concentration of powder at the corresponding measuring point in the carriage; The bioaerosol monitoring unit (223) includes a bioaerosol monitor (2231), and the bioaerosol monitor (2231) is used for real-time monitoring of the concentration of microorganisms in the air at the point of interest in the passenger compartment at the line site. 4. A test method for the propagation law of pathogenic particulate matter in a passenger compartment of a high-speed train, characterized in that it includes a laboratory real vehicle test method, and the laboratory real vehicle test method includes a first humidity detection process and a laser-induced fluorescence detection process, wherein: The first humidity detection process includes: using a first atomizing unit (111) arranged at a preset position in the actual laboratory vehicle compartment to atomize water into aerosol; using each measuring point dispersedly arranged in the laboratory actual vehicle compartment The plurality of first hygrometers (112) of the plurality of first hygrometers (112) measure the humidity of the corresponding measuring points; according to the collected data of the first hygrometers (112), calculate the time-averaged concentration of the aerosol corresponding to the measuring points in the cabin of the actual vehicle in the laboratory; The laser-induced fluorescence detection process includes: using a second atomizing unit (121) set at a preset position in the laboratory real vehicle compartment to atomize the water with added fluorescent agent into aerosol; using a PIV imaging device (122) to scan the laboratory The images of the measuring points of interest in the cabin of the real vehicle; the propagation law of the aerosol at each measuring point is obtained according to the collected images of the PIV imaging device (122). 5. The test method for the propagation law of pathogen-carrying particulate matter in a passenger compartment of a high-speed train as claimed in claim 4, further comprising a line field test method, the line field test method comprising a first field test method, the first field test The method includes a second humidity detection process, a tracer gas detection process, and a first air collection detection process, wherein: The second humidity detection process includes: using the third atomizing unit (2111) arranged at a preset position in the passenger-free carriage on the line to atomize water into aerosol; The plurality of second hygrometers (2112) of the line measure the humidity of the corresponding measuring points; according to the collected data of the second hygrometers (2112), the time-averaged concentration of the aerosol corresponding to the measuring points in the passenger compartment of the line site is calculated; The tracer gas detection process includes: generating tracer gas by using a gas generator (2121) arranged at a preset position in the passenger-free carriage on the line; Gas; use the gas measurement detector (2123) to detect the gas collected by the gas sampler (2122), and obtain the movement law of the tracer gas; The first air collection detection process includes: using a fourth atomizing unit (2131) set at a preset position in the passenger-free compartment on the line site to atomize the water added with a single powder that is harmless to the human body into an aerosol; The suction device (2132) sucks the gas at the point of interest in the passenger compartment without the line site into the first storage bag (2133); the first powder measuring unit (2134) is used to collect the gas in the first storage bag (2133). The time-averaged concentration of the powder at the corresponding measurement point in the passenger compartment of the line site was obtained. 6. The test method for the propagation law of pathogen-carrying particulate matter in a passenger compartment of a high-speed train as claimed in claim 4, further comprising a line field test method, the line field test method comprising a second field test method, the second field test The method includes a third humidity detection process, a second air collection detection process and a bioaerosol monitoring process, wherein: The third humidity detection process includes: using the fifth atomizing unit (2211) arranged at a preset position in the passenger compartment on the line to atomize water into aerosol; The plurality of third hygrometers (2212) of the device measure the humidity of the corresponding measuring points; according to the collected data of the third hygrometers (2212), the time-averaged concentration of the aerosol corresponding to the measuring points in the passenger compartment of the line site is calculated; The second air collection and detection process includes: using the sixth atomizing unit (2221) set at a preset position in the passenger compartment on the line site to atomize the water added with a single powder that is harmless to the human body into aerosol; using the second pumping unit (2221) The suction device (2222) sucks the gas at the point of interest in the passenger compartment on the line into the second storage bag (2223); the second powder measuring unit (2224) is used to collect the gas in the second storage bag (2223). Part and concentration measurement, and obtain the time-averaged concentration of powder at the corresponding measurement point in the passenger compartment of the line site; The bioaerosol monitoring process includes: using a bioaerosol monitor (2231) to monitor the concentration of microorganisms in the air at the point of interest in the passenger compartment on the line site in real time.

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