Air exposure evaluation system and evaluation method thereof

Abstract

The invention discloses an air exposure evaluation system and an evaluation method thereof, and relates to the field of pollutant exposure evaluation, the system comprises a respiratory rate monitor, an air pollutant detector and an intelligent terminal; the respiratory rate monitor is used for monitoring the respiratory rate of the to-be-researched object in real time; the air pollutant detector is used for detecting the concentration of air pollutants in real time; the intelligent terminal is connected with the respiratory rate monitor and the air pollutant detector and used for obtaining the air pollutant exposure concentration corresponding to the respiratory rate data according to the respiratory rate data and the air pollutant concentration data and displaying the air pollutant exposure concentration. According to the invention, the accuracy of evaluating the air pollutant exposure level of the environment where the to-be-researched object is located can be improved.

Description

Technical Field

[0001] This application relates to the field of pollutant exposure assessment, and particularly to an air exposure assessment system and an assessment method thereof. Background Art

[0002] Accurately assessing the level of human exposure to environmental pollutants helps to better study the impact of environmental pollutants on human health. For a long time, the measurement error of air pollutant exposure has been considered one of the factors leading to the limitations of air pollution epidemiology research.

[0003] The inventors found that in the prior art, the air pollutant concentration of the fixed monitoring station closest to the research object is often used to represent the exposure level of the research object. However, the fixed monitoring station is far from the living or working environment of the research object, and it is impossible to monitor the air pollutants in the living or working environment of the research object, let alone the air pollutants in the indoor environment where the research object lives or works. Therefore, there are great errors in using the data of the fixed monitoring station to study the impact of air pollutants on human health. In order to more accurately evaluate the impact of air pollutants on human health, relevant researchers have invented and used portable air pollutant detectors (such as PM 2.5 air quality detectors) to monitor the data of air pollutants in the living or working environment of the research object, and use these data to represent the exposure level of the research object. The use of portable detectors can improve the accuracy of human air pollutant exposure monitoring. However, when the research object is in different states, the breathing frequency is different, and the amount of air pollutants inhaled into the body is also different. Therefore, it is inaccurate to directly use the data measured by the air pollutant detector as the exposure concentration of the research object, and correction is needed.

[0004] Therefore, there is an urgent need for a new system and method to accurately evaluate the true situation of air pollutant exposure in the environment where the research object is located, obtain a more accurate air pollutant exposure level, so as to more accurately study the relationship between the level of human exposure to environmental pollutants and human health, and provide more accurate data support for related research such as epidemiology. Summary of the Invention

[0005] The purpose of this application is to provide an air exposure assessment system and an assessment method thereof, which can improve the accuracy of assessing the air pollutant exposure level in the environment where the research object is located.

[0006] To achieve the above purpose, this application provides the following solutions:

[0007] In the first aspect, this application provides an air exposure assessment system, including:

[0008] A respiratory rate monitor for real-time monitoring of the respiratory rate of a subject under study to obtain respiratory rate data;

[0009] An air pollutant detector for real-time detection of the concentration of air pollutants to obtain air pollutant concentration data; the respiratory rate monitor and the air pollutant detector perform synchronous data acquisition;

[0010] An intelligent terminal, respectively connected to the respiratory rate monitor and the air pollutant detector, for obtaining the air pollutant exposure concentration corresponding to the respiratory rate data based on the respiratory rate data and the air pollutant concentration data and displaying it.

[0011] Optionally, both the respiratory rate monitor and the air pollutant detector are portable devices.

[0012] Optionally, the intelligent terminal is connected to the respiratory rate monitor and the air pollutant detector respectively through Bluetooth or a wireless network.

[0013] Optionally, the respiratory rate monitor is an intelligent sports chest strap.

[0014] Optionally, the air pollutant detector is a portable PM 2.5 Air quality detector.

[0015] Optionally, the intelligent terminal is a mobile phone, a smart bracelet or a tablet computer.

[0016] In a second aspect, the present application provides an air exposure assessment method, which is applicable to the above air exposure assessment system; the air exposure assessment method includes:

[0017] Real-time acquisition of respiratory rate data and air pollutant concentration data;

[0018] Based on the respiratory rate data, obtain the respiratory rate in the resting state, and obtain a respiratory rate reference value according to the respiratory rate in the resting state;

[0019] According to the respiratory rate data, the air pollutant concentration data and the respiratory rate reference value, obtain the air pollutant exposure concentration corresponding to each respiratory rate in the respiratory rate data.

[0020] Optionally, obtaining the air pollutant exposure concentration corresponding to each respiratory rate in the respiratory rate data according to the respiratory rate data, the air pollutant concentration data and the respiratory rate reference value includes:

[0021] According to each respiratory rate in the respiratory rate data and the respiratory rate reference value, obtain a correlation coefficient corresponding to the current respiratory rate;

[0022] Obtain the air pollutant exposure concentration corresponding to the current breathing frequency based on the correlation coefficient and the air pollutant concentration.

[0023] Optionally, obtain the breathing frequency at rest based on the breathing frequency data, and obtain a breathing frequency reference value according to the breathing frequency at rest, including:

[0024] Take the average value of the breathing frequency at rest and use the average value as the breathing frequency reference value.

[0025] Optionally, obtain the air pollutant exposure concentration corresponding to the current breathing frequency according to the correlation coefficient and the air pollutant concentration, including:

[0026] According to the correlation coefficient and the air pollutant concentration, use the formula C m =K n ×C n , to obtain the air pollutant exposure concentration C m corresponding to the current breathing frequency; in the formula, K n represents the correlation coefficient, and C n represents the air pollutant concentration.

[0027] According to the specific embodiments provided by the present application, the present application has the following technical effects:

[0028] The present application provides an air exposure assessment system and its assessment method. By setting a breathing frequency monitor to monitor the breathing frequency in real time; setting an air pollutant detector to monitor the air pollutant concentration in real time; using an intelligent terminal to obtain the air pollutant exposure concentration corresponding to the breathing frequency according to the real-time detected breathing frequency and air pollutant concentration, and displaying the obtained air pollutant exposure concentration, it can improve the accuracy of the assessment of the air pollutant exposure level of the research object's environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the following described drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is a flowchart of an air exposure assessment method in an embodiment of the present application. DETAILED DESCRIPTION

[0031] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0032] To make the above objects, features, and advantages of the present application more obvious and understandable, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Embodiment 1

[0034] The present application provides an air exposure assessment system, including: a respiratory rate monitor, an air pollutant detector, and a smart terminal.

[0035] The respiratory rate monitor is used to monitor the respiratory rate of the object to be studied in real time and obtain respiratory rate data. The air pollutant detector is used to detect the air pollutant concentration in real time and obtain air pollutant concentration data. The respiratory rate monitor and the air pollutant detector perform synchronous data acquisition.

[0036] The smart terminal is respectively connected to the respiratory rate monitor and the air pollutant detector, and is used to obtain the air pollutant exposure concentration corresponding to the respiratory rate data according to the respiratory rate data and the air pollutant concentration data, and display it.

[0037] As an optional implementation manner, in order to facilitate the application of the air exposure assessment system, both the respiratory rate monitor and the air pollutant detector are portable devices.

[0038] In practical applications, the smart terminal can be connected to the respiratory rate monitor and the air pollution detector respectively through Bluetooth or wireless network. The respiratory rate monitor can be a smart sports chest strap. The air pollutant detector can be a portable PM 2.5 air quality detector. The smart terminal can be a mobile phone, a smart bracelet, or a tablet computer.

[0039] Embodiment 2

[0040] In this embodiment, the present application provides an air exposure assessment method, which is applied to the air exposure assessment system provided in the above Embodiment 1. As Figure 1 shown, the method includes:

[0041] Step 1, obtain respiratory rate data and air pollutant concentration data in real time.

[0042] Step 2, obtain the respiratory rate in the resting state based on the respiratory rate data, and obtain the respiratory rate reference value according to the respiratory rate in the resting state.

[0043] Step 3: Obtain the air pollutant exposure concentration corresponding to each respiratory rate in the respiratory rate data based on the respiratory rate data, the air pollutant concentration data, and the respiratory rate reference value.

[0044] As an alternative implementation, to improve the accuracy of the assessment, Step 3 specifically includes: obtaining a correlation coefficient corresponding to the current respiratory rate based on each respiratory rate in the respiratory rate data and the respiratory rate reference value. Obtaining the air pollutant exposure concentration corresponding to the current respiratory rate based on the correlation coefficient and the air pollutant concentration. Among them, obtaining the air pollutant exposure concentration corresponding to the current respiratory rate based on the correlation coefficient and the air pollutant concentration includes: according to the correlation coefficient and the air pollutant concentration, using the formula C m = K n × C n , to obtain the air pollutant exposure concentration C m . In the formula, K n represents the correlation coefficient, and C n represents the air pollutant concentration.

[0045] Step 2 specifically includes: averaging the respiratory rates in the resting state and using the average value as the respiratory rate reference value.

[0046] Example 3

[0047] In this example, the air exposure assessment method provided in Example 2 is applied to the air exposure assessment system provided in Example 1, and it is illustrated by taking the postgraduate students in a certain school as the research object. The main activities of the postgraduate student in a day of 24 hours are divided into office work, sleeping in the dormitory, eating in the cafeteria, outdoor sports, etc.

[0048] The research object carries a respiratory rate monitor with him / her to monitor the respiratory rate of the research object in real time and obtain the respiratory rate data. The air pollutant detector can be placed in the environment where the research object lives and works daily, or a portable PM 2.5 air quality detector can be used, which is carried by the research object to detect the air pollutant concentration in the environment where the research object is located in real time and obtain the air pollutant concentration data. The respiratory rate monitor and the air pollutant detector perform synchronous data collection.

[0049] The respiratory rate data is denoted as A n and the air pollutant concentration data is denoted as C n. n represents the nth group of collected data, where n = 1, 2, 3,.... The intelligent terminal obtains the collected respiratory frequency data and air pollutant concentration data in real time, calculates the respiratory frequency of the research object at rest (i.e., when a normal adult is awake and quiet, the respiratory frequency is in the range of 15 - 25 breaths per minute), and calculates the average value of the respiratory frequency at rest as the respiratory frequency reference value, denoted as A 基准 .

[0050] Based on the obtained respiratory frequency data and air pollutant concentration data, the intelligent terminal combines the respiratory frequency reference value to obtain the air pollutant exposure concentration corresponding to each respiratory frequency in the respiratory frequency data and displays the current air pollutant exposure concentration in real time. Specifically, it includes: using the formula C m = K n ×C n to obtain the air pollutant exposure concentration C m , where m = 1, 2, 3,... represents the mth group of air pollutant exposure concentrations corresponding to the nth group of data. In the formula, K n represents the correlation coefficient, and C n represents the air pollutant concentration. Among them,

[0051] In this embodiment, the environments involved in the daily life, study, and work of the research object include dormitories, outdoors, offices, cafeterias, and classrooms. The research object carries a respiratory frequency monitor during 24 hours of normal activities in a day, and places an air pollutant detector in the above environments to achieve real-time monitoring of the respiratory frequency of the research object and the air pollutant concentration in the environment where he / she is located. In practical applications, the research object can carry a portable PM 2.5 air quality detector into the above environments to achieve real-time monitoring of the respiratory frequency of the research object and the PM 2.5 concentration in the environment where he / she is located.

[0052] For example, by calculation, the respiratory frequency reference value A 基准 of the research object is 19.37 ± 3.19 breaths per minute. At a certain moment, the respiratory frequency of the research object is 16 breaths per minute. At this time, the PM 2.5 concentration in the environment where the research object is located is 11 μg·m -3 , then C n = 0.83 × 11 = 9.13 μg·m -3 . That is, the actual PM 2.5 exposure concentration of the research object at this time is 9.13 μg·m -3 , which is different from the PM 2.5 concentration (11 μg·m-3 ) There are obvious differences. At this time, the breathing rate of the research object is less than the breathing rate reference value, corresponding to less inhaled PM 2.5 , and the actual air pollutant exposure concentration of the research object at this time is lower than the air pollutant concentration in the directly collected environment.

[0053] Based on the description of the above embodiments, the air exposure assessment system and its assessment method provided by this application can obtain a more accurate air pollutant exposure concentration of the research object. By using the differences in the breathing rates corresponding to different life activities of the research object, the amounts of air pollutants inhaled by the research object at different breathing rates can be distinguished, and the actual air pollutant exposure concentration of the research object can be obtained. The accuracy of the assessment of the air pollutant exposure level of the environment where the research object is located is improved.

[0054] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0055] Specific examples are used in this article to elaborate on the principle and implementation manner of this application. The description of the above embodiments is only used to help understand the method and its core idea of this application; at the same time, for those of ordinary skill in the art, according to the idea of this application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to this application.

Claims

1. An air exposure assessment system, characterized in that, The air exposure assessment system includes: A respiratory rate monitor for real-time monitoring of the respiratory rate of the subject under study to obtain respiratory rate data; An air pollutant detector for real-time detection of air pollutant concentration to obtain air pollutant concentration data; the respiratory rate monitor and the air pollutant detector perform synchronous data acquisition; An intelligent terminal, connected to the respiratory rate monitor and the air pollutant detector respectively, for obtaining the air pollutant exposure concentration corresponding to the respiratory rate data based on the respiratory rate data and the air pollutant concentration data and displaying it.

2. The air exposure assessment system according to claim 1, wherein, Both the respiratory rate monitor and the air pollutant detector are portable devices.

3. The air exposure assessment system according to claim 1, wherein The intelligent terminal is connected to the respiratory rate monitor and the air pollutant detector respectively through Bluetooth or wireless network.

4. The air exposure assessment system according to claim 1, characterized in that, The respiratory rate monitor is an intelligent sports chest strap.

5. The air exposure assessment system according to claim 1, wherein, The air pollutant detector is a portable PM 2.5 air quality detector.

6. The air exposure assessment system according to claim 1, characterized in that The intelligent terminal is a mobile phone, intelligent bracelet or tablet computer.

7. An air exposure assessment method, characterized in that, The air exposure assessment method is applicable to the air exposure assessment system described in claims 1-6; The air exposure assessment method includes: Real-time obtaining of respiratory rate data and air pollutant concentration data; Obtaining the respiratory rate at rest based on the respiratory rate data, and obtaining a respiratory rate reference value according to the respiratory rate at rest; Obtaining the air pollutant exposure concentration corresponding to each respiratory rate in the respiratory rate data according to the respiratory rate data, the air pollutant concentration data and the respiratory rate reference value.

8. The air exposure assessment method according to claim 7, wherein Obtaining the air pollutant exposure concentration corresponding to each respiratory rate in the respiratory rate data according to the respiratory rate data, the air pollutant concentration data and the respiratory rate reference value includes: Obtaining a correlation coefficient corresponding to the current respiratory rate according to each respiratory rate in the respiratory rate data and the respiratory rate reference value; Obtaining the air pollutant exposure concentration corresponding to the current respiratory rate according to the correlation coefficient and the air pollutant concentration.

9. The air exposure assessment method according to claim 7, wherein Obtaining the respiratory rate at rest based on the respiratory rate data, and obtaining a respiratory rate reference value according to the respiratory rate at rest, includes: Calculating the average value of the respiratory rate at rest, and taking the average value as the respiratory rate reference value.

10. The air exposure assessment method according to claim 8, characterized in that, Obtaining the air pollutant exposure concentration corresponding to the current respiratory rate according to the correlation coefficient and the air pollutant concentration, includes: According to the correlation coefficient and the air pollutant concentration, using the formula C m = K n × C n , the air pollutant exposure concentration C m corresponding to the current breathing frequency is obtained; in the formula, K n represents the correlation coefficient, and C n represents the air pollutant concentration.

Images