KR101522205B1 - Personalized protection factor calculation method using body region hazard analysis - Google Patents

Abstract

The present invention relates to a protection factor calculation method capable of quickly and accurately calculating and evaluating a personalized protection factor with regard to an individual who wears protective equipment such as protective clothing using the body information and the attribute information of the individual. The present invention includes the steps of: measuring the permeation rate of a contamination exposed gas with regard to the main region of the body; calculating a surface area of the main region of the body of the individual who wears the protective equipment using the attribute information and the body information of the individual; analyzing the body region hazard of each individual using the calculated surface area of the main region of the body and the measured permeation rate of the contamination exposed gas; and calculating the protection factor of the protective equipment of each individual by analyzing the body region hazard analysis.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a personal protection index

The present invention relates to a method for calculating a protection index that calculates the risk of a human body part from the amount of toxic substances adsorbed to the human body by penetrating into a protective or protective equipment.

The development of chemical and materials industries, biological and medical industries, as well as the incidental contamination of biological and chemical substances, can cause serious damage to people. In particular, there is an urgent need for a technology to completely protect the human body from toxic contaminants such as gas leakage, nuclear accident, and terrorism.

Test methods for evaluating the safety performance of protective equipment worn by individuals against such hazardous materials have been developed in foreign countries and the integrated protection performance has been evaluated in Korea. In particular, the US military has developed a technology that collectively assesses the effects of personal protection and protective equipment on CBR conditions. This method is a measure of the amount of contaminants that are absorbed and absorbed into the interior of the guard from contaminated gas vapors through the person wearing the integrated protective equipment or mannequins.

FIG. 1 is a flowchart showing an example of a conventional method for calculating a protective equipment protection index.

As shown in FIG. 1, conventionally, a sensor is attached to 27 main body parts, and a pollutant gas exposure experiment is performed. The output (concentration) of each sensor is analyzed to measure the amount of polluted gas penetrated by each part.

Therefore, the protection index of the protective equipment is calculated by calculating the risk analysis modeling for each part of the human body using the measured amount of the contaminated gas and the surface area of each of the 27 main body parts. In particular, the box marked with a dotted line represents the risk calculation method. The surface area of the predetermined 27 sites represents a generally used average surface area.

However, the conventional method of calculating the protection index of the protective equipment calculates the protection index of the protection equipment by using the surface area of the human body portion which is generally used without discrimination according to the physical body type and age and sex. Therefore, although it is possible to calculate the approximate protection index, it is difficult to obtain an accurate protection index value for each individual.

Accordingly, an object of the present invention is to provide a protection index calculation method capable of quickly and accurately calculating and evaluating a customized protection index for individuals wearing protective equipment including personal information and body information.

According to an aspect of the present invention, there is provided a method of calculating a protection index by analyzing a risk of a human body part, the method including: measuring a penetration amount of a contaminated exposure gas into a main body part; Calculating a surface area of a major part of a human body for each person wearing protective equipment using personal body information and attribute information; Analyzing the risk of each individual body part by using the measured infiltration amount of the contaminated exposure gas and the calculated surface area of the main body part of the human body; And analyzing the analyzed risk of each part of the human body to calculate the protection factor of each individual.

The main part of the human body is the predefined 27 main body parts.

The body information includes an individual's height, weight, and specific disease information, and the attribute information includes age, sex, and race.

The step of calculating the surface area by each main part may include scanning a human body of a plurality of subjects and calculating a ratio of each major part; Dividing the calculated ratio of major parts according to attribute information of each experimenter, and storing the classified ratio in a memory in a table; Measuring body information of a specific experimenter; Selecting one human body surface area calculating formula from among a plurality of human body surface area calculating equations previously stored in the memory based on attribute information of a specific experimenter; Calculating the body surface area of the subject by applying the measured body information of the subject to the selected body surface area calculation formula; And converting the calculated surface area of the human body by the ratio of the human body part corresponding to the attribute information of the current experimenter which is read from the memory, thereby converting the surface area of each main body.

The human body surface area calculating formula and the ratio of the major parts are different depending on the age, sex, and race of the experimenter.

According to another aspect of the present invention, there is provided a method of calculating a protection index by analyzing a risk of a human body part, the method comprising the steps of: measuring infiltration amount of contaminated exposure gas to 27 main parts of the human body; Selecting one human body surface area calculating formula from a plurality of human body surface area calculating equations previously stored according to the property information of the experimenter after measuring the height and weight of the experimenter; Calculating the body surface area of the subject by applying the body information of the subject to the selected body surface area calculation formula; Multiplying the calculated surface area of the human body by the ratio of 27 parts of the human body corresponding to the attribute information of the current experimenter to convert the surface area of 27 main parts; Analyzing the risk of each part of the human body by using the penetration amount of the measured contaminated exposure gas and the calculated surface area of each of the 27 main parts; And calculating the protective equipment protection index of the user by analyzing the analyzed risk of each part of the human body.

The attribute information includes age, gender, and race, and the ratio of the 27 parts of the human body is calculated by scanning the human body of the experimenter, and classified according to the attribute information of each experimenter and stored in a memory in a table form.

The human body surface area calculating formula and the ratio of the major parts are different depending on the age, sex, and race of the experimenter.

The present invention predicts the surface area of a human body using personal attribute information and physical information, and penetrates into personal protection or protective equipment to calculate the risk of each part from the amount of toxic substances adsorbed on the human body. By calculating the protection index, it is possible to calculate the customized protection index according to various body shapes with different height and weight, and it is possible to calculate the protection index of the people according to the age as well as the Western and Asian people, men and women, There is an effect that can be applied to a variety of protection equipment including the < RTI ID = 0.0 >

1 is a flowchart showing an example of a conventional method of calculating a protection index of a protective equipment.
2 is a diagram illustrating a method for calculating a ratio of human body parts in the present invention.
FIG. 3 is a view showing 27 main parts to be scanned by a three-dimensional scanner; FIG.
4 is a flowchart illustrating a method of calculating a protection index for a human body according to an embodiment of the present invention.
FIG. 5 is a flowchart showing a concrete calculation method used in calculating the surface area of a human body and the surface area by using the height and weight of FIG. 4;
FIG. 6 is a graph showing calculation results in the case where height and weight are given by the formulas used in the calculation of the human body surface area shown in FIGS. 4 and 5. FIG.
FIG. 7 is a view showing a result of calculation of a risk by a human body based on a surface area and an experimental result; FIG.

The present invention proposes a method of predicting the surface area of a human body through basic height and weight measurement of the subject and calculating and evaluating a more accurate protection index of the human body using the same. This is a result of calculating the protection index which is comparatively accurate even when the body surface area according to the female, male, and age is different as well as the various body shape, beyond the problem of calculating the protection index by the existing absolute value.

In addition, the present invention intends to derive the protection index of the human body which is cheaper and faster than the method of obtaining the surface area per direct part by consuming a long time through the expensive 3D scanner.

The method of calculating the protection index based on the risk analysis of the human body parts proposed in the present invention basically uses the method used for evaluating the performance of integrated protection of the US military.

FIG. 2 shows a method of calculating the ratio of human body parts in the present invention, and FIG. 3 shows 27 main parts to be scanned by a three-dimensional scanner.

As shown in FIGS. 2 and 3, when a human body is scanned by a person through a three-dimensional scanner (S10), a controller (not shown) calculates the surface area of the 27 main parts of the human body, To calculate the ratio of 27 major parts.

The calculated ratio of each part is calculated as attribute information of an individual, for example, by age (child, adult, old man), sex (male, female) and race (Eastern Asian) and stored in a memory in a table form. In the present invention, the age is described as an example of a child or an adult. However, the present invention is not limited to this and can be further divided into experiments. The ratio of each part can be stored as a mean value by calculating the surface area of the 27 main parts of the human body several times according to age, sex and race. This is because, for example, children, men, and Asians have slightly different proportions, but the proportions of each part are somewhat similar.

Once the ratio of each part of the human body (27 parts) is calculated, the controller calculates the surface area of the human body part by applying body index data having a large individual difference.

FIG. 4 is a flowchart illustrating a method of calculating a protection index by analyzing a risk of a human body according to an embodiment of the present invention, and FIG. 5 illustrates an example of calculating a body surface area and a surface area by using the height and weight .

As shown in FIGS. 4 and 5, the individual body dimension data (height, weight) of the individual is measured (S20), and the controller determines the measured body dimension data as attribute information (age, sex and race) And stored in the memory.

When the body dimension data (height, weight) of the experimenter is measured and stored, the controller calculates a plurality of body surface area calculating formulas (BSA formula) stored in the memory based on the attribute information (age, sex, , One calculation formula suitable for the current experimenter (customized) is selected (S21).

The plurality of body surface area calculating equations (BSA formulas) commonly have the form of the following equation (1).

[Equation 1]

BSA = C x W ^A x H ^B

Where W is body weight (kg), H is height (cm), and A, B, and C are conversion factors. In particular, A, B, and C are different for each of a plurality of body surface area calculation equations, and are already allocated for each body surface area calculation expression.

Therefore, the control unit calculates the body surface area (BSA) of the subject by inputting the measured body weight W and the height H into the selected body surface area calculation formula, (BSA) is multiplied by the ratio of the 27 regions selected from the memory, and the surface area per 27 regions is converted (S22). At this time, based on the attribute information (age, sex, and race) of the experimenter, a ratio of 27 parts of a specific type is selected from a memory table and multiplied by the calculated body surface area (BSA).

For example, in the plurality of body surface area calculation equations shown in Fig. 5, the calculation equation of two dubies (BSA = 71.84 x W ^0.425 x H ^0.725 ) is selected, And the height H are inputted, the body surface area (BSA) calculated by the above calculation formula may be 18950 (cm ² ) as shown at the bottom right of FIG. In this case, if the ratios of the 27 selected parts according to the attribute information of the experimenter are the same as those shown in the adjacent parts, the surface area per 27 parts is 18950 (cm ² ) × 27 parts ratio (% ) And has the value in the right dotted line.

That is, the surface area of the scalp (Scalp) is ^{18950 (cm 2) × 1.85 (} %) = 350 (cm 2) , and the surface area of the ear (Ears) is ^{18950 (cm 2) × 0.26 (} %) = 50 (cm 2) .

Using the above-described method, the controller can obtain the surface area of 27 parts.

6 is a graph showing body surface results measured by applying a specific height and weight to a plurality of previously stored body surface area calculating equations.

In order to secure the reliability of various surface area calculation coefficients, as shown in FIG. 5, the body surface area calculation is performed by taking a case where the height is 175 cm and the body weight is 50-100 kg. Referring to FIG. 6, the body surface area calculation results show that different body surface values are calculated in the cases of Oriental, Western, male and female (+, 0).

Therefore, as in the present invention, a more accurate body surface area value can be obtained by selecting an appropriate human body surface area calculating formula according to the experimenter attribute information (age, sex, and race).

Then, when the surface area of the human body part is calculated (converted), the controller uses it to calculate the risk of each human body part. At this time, since the ratio of the human body part also varies, it is possible to obtain a more accurate value by applying the ratio of the human body part of the individual to the human body part rather than the average human body part ratio.

Hereinafter, the risk calculation for each part of the human body applied to the present invention will be described. This method should be followed by the procedures used to assess protection in the US military.

Measure PSD Concentrations and Calculate Protection Factor (PF)

Sensors (Passive Sampling Devices: PSDs) are used fixedly in the test taker's clothing to absorb similar chemical agent bubbles at the same rate as the body's absorption of the agent. The PSD was used for the sampling of MeS bubbles within the protection. PSD as well as aggressive detection sensors are possible.

)는 가스 크로마토그래피(GC : gas chromatography) 분석으로 측정한 각 PSD의 MeS총 질량(g)을 PSD의 샘플러의 유량비(SRF; in/min)에 시험기간 동안 PSD에 노출된 시간(τ: min)곱해서 나눈 값으로 계산된다. PSD 샘플의 백그라운드 질량을 측정하여 MeS 증기(vapor)에 실제 노출되는 양에서 빼주고 계산한다. 각 부위별 PSD의 농도(

)는 다음의 수학 2를 따른다.The sampler flow rate of the PSD is determined through experiments and the adsorption rate and absorption rate are measured and used. The concentration of MeS from each internal PSD (

) Is the total mass (g) of MeS of each PSD measured by gas chromatography (GC) to the ratio SRF (in / min) of the sampler of PSD (τ: min ) Multiplied and divided by the value. The background mass of the PSD sample is measured and subtracted from the actual exposure to the MeS vapor. Concentration of PSD in each region (

) ≪ / RTI >

&Quot; (2) "

Each PSD concentration is converted by multiplying dose by exposure time. The average MeS concentration in the chamber is measured and the total exposure dose, like the PSD concentration, is calculated by multiplying the exposure time.

The PPI (PF _SL ) is determined by dividing the exposure dose to the dose measured within the protection in which the PSD is located. The Protection Factor (PF) calculation for each site is expressed by Equation (3).

&Quot; (3) "

Here, τ represents the exposure time (min).

Overall PF calculation

The overall PF of each protection is determined using the Body Region Hazard Analysis (BRHA) developed by Fedele and Nelson, which is absorbed through the skin in 27 body parts Means the amount of agent that causes the reaction.

The value of the protection index (PF _SL ) by the sampler part is used to calculate the protection index (PF _BR ) of 27 body parts. At this time, the body part-specific sampler position shown in FIG. 4 is used.

Systemic-Nerve Agents (VX)

The BRHA process is used to know the dose acting on each body part of the systemic nerve agent. The value obtained by dividing the VX dose of each part of the body by the skin area is called " A / D index (Factor) ". The A / D index represents the relative sensitivity of each part of the body to nerve agent exposure. The overall PF of the protection is calculated from the local PF for each body part, and the A / D index for each body part is expressed by the following equation (4).

&Quot; (4) "

Where PF _i is the protection index measured at each body part i = 1,2 ... 27, and (A / D) _i represents the A / D index for each body part.

The dosage required to cause headache is 10 mg-min / m ³ , with a dose of 25 mg-min / m ³ causing vomiting and nausea.

The minimum dose required to be effected by a neuroleptic agent under personal CBR protection is called Systemic Minimum Required Exposure Dosage (MREDs), and can be expressed as Equation 5 below.

&Quot; (5) "

Local Action - Blister Agent (HD)

Because the minimum dose of erythropoietin (HD) that causes erythema does not accumulate and affects only the normally exposed areas of the body, to predict the systemic minimum required exposure doses (MREDs), skin sensitivity and protection You should refer to the PF value. The minimum value tested with protection is the minimum required exposure dose (RED _HD ) for _HD .

Local Exposure Dosage for HD ( _{HD HD} ) was used in this model. The LED _HD value for each body part is obtained by multiplying the MRED necessary for causing the red spot in the body part by the PF value for each part as shown in equation (6).

&Quot; (6) "

The results of each of the examples obtained through the BRHA model are shown in FIG.

As described above, according to the present invention, the body surface area calculating formula is selected based on individual body dimension data (height and weight) and personal attribute information (age, sex, race), and the body surface area After calculating the surface area, the surface area of each part is calculated from the ratio of each part of the human body inversely.

Therefore, since the risk of each part of the human body in the protection obtained directly through the experiment can be calculated using the calculated surface area data of each part, it can be applied to a more accurate and various human body than the existing method, There is an advantage that the technology for calculating the protection index can be secured.

That is, according to the present invention, a personalized protection index can be calculated for each individual wearing protection equipment including personal protection and personal information, so that a customized protection index according to various body types having different height and weight can be calculated, It is possible to calculate the protection index of people according to age as well as Western and Oriental people, men and women, and it is applicable to various protection equipments including protection from the ratio of human body.

Although the present invention has been described by taking the height and weight as examples of the body information of the experimenter as an example, the present invention is not limited thereto and specific information (disease, allergy, weak part) of the experimenter can be additionally referred to.

The method of calculating the protection index by analyzing the risk of each human body part according to the present invention can be applied to a limited number of configurations and methods of the embodiments described above, It will be understood that the invention may be embodied in other specific forms without departing from the spirit or scope of the invention. Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive.

Claims (8)

Analyzing outputs of a plurality of sensors mounted on a main body of a human body to measure a penetration amount of contaminated exposure gas for each main body;
Calculating a surface area of a major part of a human body for each person wearing protective equipment using personal body information and attribute information;
Analyzing the risk of each individual body part by using the measured infiltration amount of the contaminated exposure gas and the calculated surface area of the main body part of the human body; And
And analyzing the analyzed risk of each part of the human body to calculate a protective device protection index of each individual. 2. The method according to claim 1,
Wherein said at least one region is defined as 27 major human body regions. 2. The method according to claim 1,
Wherein the information includes an individual's height, weight, and specific disease information, and the attribute information includes age, sex, and race. 2. The method of claim 1, wherein calculating the surface area
Calculating a ratio of major parts based on human body scan information of a plurality of subjects;
Dividing the calculated ratio of major parts according to attribute information of each experimenter, and storing the classified ratio in a memory in a table;
Selecting one human body surface area calculating formula from among a plurality of human body surface area calculating equations previously stored in the memory based on attribute information of a specific experimenter;
Calculating the body surface area of the subject by applying the body information of the subject to the selected body surface area calculation formula; And
And multiplying the calculated surface area of the human body by the ratio of the human body part corresponding to the attribute information of the current experimenter read from the memory, thereby converting the surface area of each major part. 5. The method of claim 4, wherein the human body surface area calculating formula and the ratio
And the age, sex, and race of the subject. Analyzing the outputs of a plurality of sensors mounted on the human body of the experimenter and measuring the amount of infiltration of polluted exposure gas by 27 main parts;
Automatically selecting one human body surface area calculating formula among a plurality of human body surface area calculating equations previously stored according to the body information of the experimenter and the attribute information of the experimenter;
Calculating the body surface area of the subject by applying the body information of the subject to the selected body surface area calculation formula;
Multiplying the calculated surface area of the human body by the ratio of 27 parts of the human body corresponding to the attribute information of the current experimenter to convert the surface area of 27 main parts;
Analyzing the risk of each part of the human body using the infiltration amount of the measured contaminated exposure gas and the calculated surface area of each of the 27 main parts; And
And calculating the protective equipment protection index of the user by analyzing the analyzed risk of each part of the human body. 7. The method of claim 6, wherein the body information includes height and weight, the attribute information includes age, sex, and race,
Wherein the ratio of the 27 parts of the human body is calculated by scanning the human body of the human body and is classified according to the attribute information of each human body and stored in a memory in a table form. 7. The method according to claim 6, wherein the human body surface area calculating formula and the ratio
And the age, sex, and race of the subject.

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