A device and method for determining the thermal and moisture resistance of clothing

Abstract

This invention discloses a device and method for determining the thermal and moisture resistance of clothing. The method includes: first, obtaining the fabric of the clothing to be tested, as well as the region of use and the user group; determining a test plan based on the fabric, region of use, and user group; and adjusting the sweating parts, sweating amount, heat-generating parts, heat generation of the heat-generating parts, atmospheric pressure, wind speed, and wind direction of the test dummy according to the test plan, and then conducting a thermal and moisture resistance test on the clothing to be tested. This method can determine the thermal and moisture resistance of the clothing to be tested in complex living environments, and by carefully dividing the test dummy, it can more accurately reflect the thermal and moisture resistance of the human body wearing the clothing to be tested.

Description

Technical Field

[0001] This invention belongs to the field of clothing technology, specifically relating to a device and method for determining the thermal and moisture resistance of clothing. Background Technology

[0002] Clothing plays a vital role in people's daily lives as an essential commodity. Thermal resistance is an evaluation index of clothing's ability to keep warm and dry. Clothing with high thermal resistance can greatly improve the user's wearing comfort.

[0003] Traditional methods for testing clothing to determine its thermal and moisture resistance typically involve testing the clothing in a constant indoor environment. The testing process simply measures the temperature and humidity differences between the inside and outside of the clothing per unit time. However, this method only measures the heat and moisture transfer efficiency of the clothing in an indoor environment and cannot determine the thermal and moisture resistance of clothing in complex living environments.

[0004] Therefore, determining the thermal and moisture resistance of clothing in complex living environments is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to solve the technical problem that existing technologies cannot determine the thermal and moisture resistance and comfort of clothing in complex living environments.

[0006] To achieve the above-mentioned technical objectives, in one aspect, the present invention provides a device for determining the thermal and moisture resistance of clothing, the device comprising:

[0007] The test dummy has simulated muscles attached to its surface and simulated skin covering the muscles. Heating tubes are installed in the simulated muscles, and multiple sensors and evenly distributed holes are installed on the simulated skin. The torso and limbs of the test dummy are hollow, and pressure chambers are provided in the hollow parts of the torso and limbs. Simulated sweat is placed in the pressure chambers. One end of the pressure chamber includes a push rod, and the other end of the pressure chamber is a sweat outlet. The sweat outlet is connected to the surface of the test dummy through multiple channels.

[0008] The test chamber contains a test dummy fixed inside. The test chamber also includes a temperature control device, a wind speed control device, an air pressure control device, and a humidity control device. The temperature control device controls the temperature inside the test chamber. The wind speed control device includes multiple air outlets to control the wind speed and direction inside the test chamber. The air pressure control device controls the air pressure inside the test chamber.

[0009] Furthermore, the size of the channel is determined based on the amount of sweat produced by different parts of the human body.

[0010] On the other hand, the present invention also provides a method for determining the thermal and moisture resistance of clothing, applied in the device described above, characterized in that the method includes:

[0011] Obtain information about the fabric of the garment to be tested, as well as the region and target audience for its use;

[0012] The testing plan was determined based on the fabric, the region of use, and the user group.

[0013] After adjusting the sweating areas, sweat volume, heat-generating areas, heat output of the heat-generating areas, atmospheric pressure, wind speed, and wind direction of the test dummy according to the test plan, the thermal moisture resistance test is performed on the garment to be tested.

[0014] Furthermore, obtaining the fabric of the garment to be tested specifically includes:

[0015] The camera is used to capture images of the garment under test, including inside and outside images of the back, abdomen, forearm, and armpits.

[0016] Based on the images of the back (inner and outer), abdomen (inner and outer), forearm (inner and outer), and armpit (inner and outer), the knitting density, fabric, and thickness of each part of the garment to be tested are determined.

[0017] Furthermore, the test plan is determined based on the fabric, the region of use, and the user group. The test plan specifically includes:

[0018] Whether the test dummy needs additional close-fitting clothing is determined based on the knitting density and the thickness of the fabric and the garment to be tested.

[0019] Based on the region of use and the user group, determine the sweating areas, amount of sweat, heat-generating areas, heat output of the heat-generating areas, atmospheric pressure in the test chamber, as well as wind speed and direction.

[0020] Furthermore, the determination of the sweating areas, sweat volume, heat-generating areas, heat output of the heat-generating areas, atmospheric pressure in the test chamber, wind speed, and wind direction of the test dummy based on the knitting density, fabric, thickness of the garment to be tested, region of use, and user group specifically includes:

[0021] The initial levels of atmospheric pressure, wind speed, and wind direction are determined based on the area of ​​use. At the same time, the sweating sites, amount of sweat, heat-generating sites, and heat output of the test dummy are determined according to the area of ​​use and the user group. The user group includes infants, teenagers, young adults, middle-aged people, and the elderly.

[0022] If the knitting density is greater than the first density threshold, and if the thickness of the garment to be tested is greater than the first thickness threshold, and the fabric is a preset category material, then the initial level of the wind speed will be increased by three levels.

[0023] Furthermore, the thermal and moisture resistance is determined by first determining the thermal and moisture resistance of each part of the garment to be tested, and then taking a weighted average of the thermal and moisture resistance of each part as the thermal and moisture resistance of the garment to be tested.

[0024] Furthermore, the thermal resistance R1 of each part is determined using the following formula:

[0025]

[0026] In the formula, S is the surface area of ​​the corresponding part, W1 is the temperature of the corresponding part, W2 is the temperature of the surface of the garment to be tested, and N is the heat loss;

[0027] The moisture resistance R2 of each part is determined by the following formula:

[0028] R² = β₀ + β₁X₁ + β₂X₂ + β₃X₃ + ε

[0029] In the formula, X1 is the moisture resistance of the inner fabric of the garment under test or the water vapor transfer coefficient of the air layer between the garment under test and the simulated skin, X2 is the moisture resistance of the outer fabric of the garment under test, X3 is the wind speed, β0 is a constant term, β1, β2, and β3 are the coefficients of the corresponding terms, and ε is the random error.

[0030] This invention provides a device and method for determining the thermal and moisture resistance of clothing. Compared with the prior art, this method first obtains the fabric of the clothing to be tested, as well as the region of use and the user group; determines a test plan based on the fabric, region of use, and user group; and adjusts the sweating parts, sweating amount, heat-generating parts, heat generation of the heat-generating parts, atmospheric pressure, wind speed, and wind direction of the test dummy according to the test plan before conducting a thermal and moisture resistance test on the clothing to be tested. This method can determine the thermal and moisture resistance of the clothing to be tested in complex living environments, and by carefully dividing the test dummy, it can more accurately reflect the thermal and moisture resistance of the human body wearing the clothing to be tested. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments or prior art of this specification, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 The diagram shown is a flowchart illustrating the method for determining the thermal and moisture resistance of clothing provided in the embodiments of this specification. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] like Figure 1 The diagram shown is a flowchart illustrating the method for determining the thermal and moisture resistance of clothing provided in the embodiments of this specification. Although this specification provides the method operation steps or device structure shown in the following embodiments or figures, based on convention or without creative effort, the method or device may include more or fewer operation steps or module units after partial combination. In steps or structures where there is no necessary causal relationship in logic, the execution order of these steps or the module structure of the device are not limited to the execution order or module structure shown in the embodiments or figures of this specification.

[0035] As described in the background section, the existing technology for testing the thermal and moisture resistance of clothing is not perfect, resulting in a lack of comfort in the clothing.

[0036] To determine the thermal and moisture resistance of clothing to be tested in complex living environments, this application first proposes an apparatus comprising:

[0037] The test dummy has simulated muscles attached to its surface and simulated skin covering the muscles. Heating tubes are installed in the simulated muscles, and multiple sensors and evenly distributed holes are installed on the simulated skin. The torso and limbs of the test dummy are hollow, and each hollow part of the torso and limbs has a pressure chamber containing simulated sweat. One end of the pressure chamber includes a push rod, and the other end of the pressure chamber is a sweat outlet, which is connected to the surface of the test dummy through multiple channels.

[0038] The test chamber contains a test dummy fixed inside. The test chamber is also equipped with a temperature control device, a wind speed control device, an air pressure control device, and a humidity control device. The temperature control device is used to control the temperature inside the test chamber. The wind speed control device includes multiple air outlets and is used to control the wind speed and direction inside the test chamber. The air pressure control device is used to control the air pressure inside the test chamber.

[0039] Specifically, because the human body is very complex, even the relatively simpler parts generate different amounts of heat daily. Generally speaking, the temperature of the torso is higher than that of the extremities. Body temperature data can be collected from different age groups and genders to establish a body temperature model. Furthermore, the test dummy proposed in this application differentiates and controls each part individually. Heating tubes in each part control the temperature of that corresponding area. For example, in the arm, heating tubes can be evenly distributed along the arm's direction within the simulated muscles. The control lines for the heating tubes can be connected to the control section through a threaded channel from the hollow part of the dummy to the surface. The pores on the simulated skin are very small in diameter, designed to simulate the pores of human skin as closely as possible. The pressure chambers in the hollow parts of the test dummy's torso and limbs contain simulated sweat, formulated based on the composition of human sweat. One end of the pressure chamber is connected to a push rod, and the overall shape resembles a syringe. The push rod can be controlled by a small air pump. Because the test dummy is hollow, the control lines for all components can be threaded through the hollow part from inside the test dummy, and finally, the temperature is controlled by a test... The mannequin extends from a section of its body not covered by clothing, and the pressure chambers in each area are controlled by a trained sweating model to adjust the speed of the push rods. This sweating model is specifically designed based on data from the training region, training population, training sweating areas, training sweat volume, training heat-generating areas, and the heat generated by those areas. The training region includes areas such as plains, latitude and longitude, and / or tropical and subtropical regions, basins, and forests. The training population includes young adults, middle-aged adults, and the elderly. This training creates a relatively accurate sweating model of the human body, which is then used to control the amount of sweat produced in each area. Because heat exchange between the human body and the environment also involves the three basic forms mentioned above, and because this heat and moisture exchange is continuous, even when clothing covers the body, this process continues. The heat exchange between the human body and the environment follows Fourier's law, also known as the fundamental law of thermal conduction. The human body primarily loses water through the evaporation of sweat. The other end of the pressure chamber is the sweat outlet, which is connected to the surface of the test dummy through multiple channels to simulate the process of sweat being expelled from the body. In addition, since the surface of the test dummy is first attached with simulated muscles, the simulated muscles also need to have holes evenly distributed.

[0040] The test chamber mainly simulates complex living environments, including the various control devices mentioned above. By combining them, various complex living environments can be realized.

[0041] To better utilize the aforementioned device, this application also provides a method for determining the thermal and moisture resistance of clothing, which can be applied to the aforementioned device, such as... Figure 1 As shown, the method includes:

[0042] Step S101: Obtain the fabric of the garment to be tested, as well as the region and target audience for its use.

[0043] In this embodiment of the application, obtaining the fabric of the garment to be tested specifically includes:

[0044] The camera is used to capture images of the garment under test, including inside and outside images of the back, abdomen, forearm, and armpits.

[0045] Based on the images of the back (inner and outer), abdomen (inner and outer), forearm (inner and outer), and armpit (inner and outer), the knitting density, fabric, and thickness of each part of the garment to be tested are determined.

[0046] Specifically, because the clothing to be tested may include jackets, short-sleeved shirts, skirts, and ethnic costumes from different regions, the types are numerous, and therefore the applicable regions and people are also different. Therefore, it is necessary to obtain information on the usage region and user group for more accurate segmentation, which helps to determine the user's physical experience. Taking pictures of different parts of the clothing to be tested is necessary because the heat and moisture convection of different parts of the clothing is not the same when worn by the human body. For example, as the intensity of exercise increases, the chest and back areas sweat first and the amount of sweat is the largest, while the arms sweat less. At this time, there will be a significant difference in heat and moisture convection between the arms and the aforementioned two areas. Therefore, the heat and moisture resistance of each part will be weighted and averaged when determining the heat and moisture resistance of the clothing to be tested.

[0047] Step S102: Determine the test plan based on the fabric, the region of use, and the user group.

[0048] The test plan is determined based on the fabric, the region of use, and the user group. The test plan specifically includes:

[0049] Whether the test dummy needs additional close-fitting clothing is determined based on the knitting density and the thickness of the fabric and the garment to be tested.

[0050] Based on the knitting density, fabric, thickness of the garment to be tested, region of use, and user group, determine the sweating areas, sweat volume, heat-generating areas, heat output of the heat-generating areas, atmospheric pressure in the test chamber, as well as wind speed and direction.

[0051] Specifically, as mentioned above, the amount of heat generated varies in different regions and among different groups of people. Based on the sweating model described above, it can be determined which region and which group of people the clothing to be tested is suitable for. For example, a windproof jacket is usually used more often in outdoor mountainous areas. Therefore, if it is a windproof jacket, it is necessary to increase the humidity, increase the wind speed, and decrease the air pressure. Adding a close-fitting garment is based on the living environment. If it is a thick garment, such as a sweater, such garments usually do not come into direct contact with the human body. Therefore, a close-fitting garment, such as an undershirt, is placed on the test dummy.

[0052] The determination of the sweating areas, sweat volume, heat-generating areas, heat output of the heat-generating areas, atmospheric pressure in the test chamber, wind speed, and wind direction of the test dummy based on the knitting density, fabric, thickness of the garment to be tested, region of use, and user group specifically includes:

[0053] The initial levels of atmospheric pressure, wind speed, and wind direction are determined based on the area of ​​use. At the same time, the sweating sites, amount of sweat, heat-generating sites, and heat output of the test dummy are determined according to the area of ​​use and the user group. The user group includes infants, teenagers, young adults, middle-aged people, and the elderly.

[0054] If the knitting density is greater than the first density threshold, and if the thickness of the garment to be tested is greater than the first thickness threshold, and the fabric is a preset category material, then the initial level of the wind speed will be increased by three levels.

[0055] In real life, when the knitting density is high, it is usually for the purpose of wind protection. The higher the knitting density, the higher the wind protection level. It can be determined that the clothing with high-density knitting is for wind protection. In this case, placing the clothing in a normal indoor environment will greatly affect the user's judgment. The same applies to thicker and denser fabrics. The above-mentioned preset material category is also a dense material used for wind protection.

[0056] Step S103: After adjusting the sweating area, sweating amount, heat-generating area, heat output of the heat-generating area, atmospheric pressure, wind speed and wind direction of the test dummy according to the test plan, conduct a thermal moisture resistance test on the garment to be tested.

[0057] The thermal and moisture resistance is determined by first determining the thermal and moisture resistance of each part of the garment to be tested, and then taking a weighted average of the thermal and moisture resistance of each part as the thermal and moisture resistance of the garment to be tested.

[0058] The thermal resistance R1 of each part is determined using the following formula:

[0059]

[0060] In the formula, S is the surface area of ​​the corresponding part, W1 is the temperature of the corresponding part, W2 is the temperature of the surface of the garment to be tested, and N is the heat loss;

[0061] The moisture resistance R2 of each part is determined by the following formula:

[0062] R² = β₀ + β₁X₁ + β₂X₂ + β₃X₃ + ε

[0063] In the formula, X1 is the moisture resistance of the inner fabric of the garment under test or the water vapor transfer coefficient of the air layer between the garment under test and the simulated skin, X2 is the moisture resistance of the outer fabric of the garment under test, X3 is the wind speed, β0 is a constant term, β1, β2, and β3 are the coefficients of the corresponding terms, and ε is the random error. Specifically, each coefficient can be estimated by combining the posterior distribution through existing algorithms.

[0064] The foregoing has described specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than that shown in the embodiments and may still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require the specific or sequential order shown to achieve the desired result. In some embodiments, multitasking and parallel processing are possible or may be advantageous.

[0065] The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or plug-ins may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, indirect coupling or communication connection between devices or units, and may be electrical, mechanical, or other forms.

[0066] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, system embodiments are basically similar to method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments. In the description of this specification, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this specification. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0067] Those skilled in the art will recognize that the embodiments described herein are intended to help the reader understand the principles of the invention, and should be understood that the scope of protection of the invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on the technical teachings disclosed in this invention without departing from the spirit of the invention, and these modifications and combinations are still within the scope of protection of this invention.

Claims

1. A device for determining the thermal and moisture resistance of clothing, characterized in that, The device includes: The test dummy has simulated muscles attached to its surface and simulated skin covering the muscles. Heating tubes are installed in the simulated muscles, and perforations are evenly distributed on the muscles. Multiple sensors and perforations are evenly distributed on the simulated skin. The torso and limbs of the test dummy are hollow, and each hollow part contains a pressure chamber. Simulated sweat is placed in the pressure chamber. One end of each pressure chamber includes a push rod, and the other end is a sweat outlet connected to the surface of the test dummy through multiple channels. The test chamber contains a test dummy fixed inside. The test chamber also includes a temperature control device, a wind speed control device, an air pressure control device, and a humidity control device. The temperature control device controls the temperature inside the test chamber. The wind speed control device includes multiple air outlets to control the wind speed and direction inside the test chamber. The air pressure control device controls the air pressure inside the test chamber.

2. The garment thermal and moisture resistance determining device as described in claim 1, characterized in that, The size of the channel is determined based on the amount of sweat produced by different parts of the human body.

3. A method for determining the thermal and moisture resistance of clothing, applied in the apparatus as described in any one of claims 1-2, characterized in that, The method includes: Obtain information about the fabric of the garment to be tested, as well as the region and target audience for its use; The testing plan was determined based on the fabric, the region of use, and the user group. After adjusting the sweating areas, sweat volume, heat-generating areas, heat output of the heat-generating areas, atmospheric pressure, wind speed, and wind direction of the test dummy according to the test plan, the thermal moisture resistance test is performed on the garment to be tested.

4. The method for determining the thermal and moisture resistance of clothing as described in claim 3, characterized in that, The specific steps of obtaining the fabric of the garment to be tested include: The camera is used to capture images of the garment under test, including inside and outside images of the back, abdomen, forearm, and armpits. Based on the images of the back (inner and outer), abdomen (inner and outer), forearm (inner and outer), and armpit (inner and outer), the knitting density, fabric, and thickness of each part of the garment to be tested are determined.

5. The method for determining the thermal and moisture resistance of clothing as described in claim 4, characterized in that, The test plan is determined based on the fabric, the region of use, and the user group. The test plan specifically includes: Whether the test dummy needs additional close-fitting clothing is determined based on the knitting density and the thickness of the fabric and the garment to be tested. Based on the knitting density, fabric, thickness of the garment to be tested, region of use, and user group, determine the sweating areas, sweat volume, heat-generating areas, heat output of the heat-generating areas, atmospheric pressure in the test chamber, as well as wind speed and direction.

6. The method for determining the thermal and moisture resistance of clothing as described in claim 5, characterized in that, The determination of the sweating areas, sweat volume, heat-generating areas, heat output of the heat-generating areas, atmospheric pressure in the test chamber, wind speed, and wind direction of the test dummy based on the knitting density, fabric, thickness of the garment to be tested, region of use, and user group specifically includes: The initial levels of atmospheric pressure, wind speed, and wind direction are determined based on the area of ​​use. At the same time, the sweating sites, amount of sweat, heat-generating sites, and heat output of the test dummy are determined according to the area of ​​use and the user group. The user group includes infants, teenagers, young adults, middle-aged people, and the elderly. If the knitting density is greater than the first density threshold, and if the thickness of the garment to be tested is greater than the first thickness threshold, and the fabric is a preset category material, then the initial level of the wind speed is increased by three levels.

7. The method for determining the thermal and moisture resistance of clothing as described in claim 6, characterized in that, The thermal and moisture resistance is determined by first determining the thermal and moisture resistance of each part of the garment to be tested, and then taking a weighted average of the thermal and moisture resistance of each part as the thermal and moisture resistance of the garment to be tested.

8. The method for determining the thermal and moisture resistance of clothing as described in claim 7, characterized in that, The thermal resistance R1 of each part is determined using the following formula: ； In the formula, S is the surface area of ​​the corresponding part, W1 is the temperature of the corresponding part, W2 is the temperature of the surface of the garment to be tested, and N is the heat loss; The moisture resistance R2 of each part is determined by the following formula: ； In the formula, The moisture resistance of the inner fabric of the garment under test or the water vapor transfer coefficient of the air layer between the garment under test and the simulated skin. The wet resistance of the outer fabric of the garment to be tested. For wind speed, For constant terms, , , These are the coefficients of the corresponding terms. This is random error.

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