Sweat body warming dummy tester and control method

Abstract

The invention provides a sweating body warming dummy tester and a control method, and aims to at least solve the problem of moisture resistance test in the prior art. The sweating and body warming dummy tester comprises a dummy surface layer, an evaporation layer, a heating device, a supporting frame, a water supply device and a control circuit, the dummy surface layer and the evaporation layer are installed on the supporting frame to form a human-shaped structure, and the dummy surface layer is located on the outer side of the evaporation layer. The dummy surface layer is of a net structure or is provided with a plurality of air holes so that steam of the evaporation layer can penetrate through the dummy surface layer to reach the outer side of the dummy surface layer, the evaporation layer is provided with a water absorption material which can partially absorb and diffuse simulated sweat conveyed by the water conveying device, and the heating device can heat the dummy surface layer and the evaporation layer. And the heating device and the water feeding device are controlled by the control circuit. During testing, the evaporation layer can absorb a large amount of simulated sweat, and the simulated sweat can be evaporated under the action of the heating device and is conveyed to the dummy surface layer through the air holes, so that the obtained test data is more accurate, and the tested clothes can obtain more accurate moisture resistance.

Description

Technical Field

[0001] The present application relates to the field of clothing material testing, and in particular to a sweating warm manikin tester and a control method. Background Art

[0002] In the clothing material testing, the two most critical tests are thermal resistance test and moisture resistance test, especially the moisture resistance test, which not only requires good control of temperature, but also has certain requirements for the control of sweating devices. According to GB / T18398-2001 "Clothing Thermal Resistance Test Method Warm Body Manikin Method" and GB / T 39605-2020 "Clothing Moisture Resistance Test Method Sweating Warm Body Manikin Method", the main methods for testing moisture resistance are heat dissipation method and evaporation method. In all tests, the average skin temperature of the manikin surface should be kept within the range of (34 ± 0.5) ℃. Temperature is proportional to resistance. If conventional resistance wire is used for heating, the resistance of the high temperature area will increase, and the low temperature area will have relatively low resistance. The voltage in the area with increased resistance will also increase the heating power, so the temperature will further increase and the temperature difference will further expand. Even if the initial temperature is the same, due to different heat dissipation speeds, temperature differences will slowly appear in different positions. As time goes by, the temperature difference will further expand, which will eventually affect the test.

[0003] In the standard, when measuring moisture resistance, a water collection basin should be used to store the water dripping from the dummy. In order to reduce the evaporation of water in the water collection basin, paraffin should be placed in the water collection basin first. After the test, measure the mass of the dripping water. It can be seen that the existing warm manikin sweating device has defects, which will produce a large amount of water on the test clothing or warm manikin surface. When the moisture content of the textile material increases to a certain amount, the air permeability drops sharply, which will affect the water vapor pressure on the sweating surface of the dummy and further affect the moisture resistance test. The rate of heat dissipation is related to the sweating position of the sweating device. Excessive or low humidity will affect the rate of heat dissipation, which will further cause the temperature imbalance at each position. In the standard, the sweating rate of the dummy is set between 400mL / (h·m²) and 1 200 mL / (h·m²). It should be ensured that all parts of the dummy are moistened during the test, and no part should be dry. In this way, a large amount of water needs to be transported to maintain this state, so that the tested clothing may also be partially moistened, affecting the moisture resistance test.

[0004] Generally speaking, users wear dry clothes, so it is more meaningful to measure the moisture resistance in a dry state. For the testing of some sportswear, it may be necessary to consider the test in a wet state, but it is also necessary to test the moisture resistance in a dry state. Clothes are dry when they are first worn, and few people wear wet clothes directly.

[0005] The patent with announcement number CN114910386B discloses a warm manikin test system, in which the heating wire is directly buried 1mm under the bionic skin. For some locations that are not easy to dissipate heat, the local temperature is mainly controlled at 34°C by adding a sweating device. This not only can only have a short-term inhibitory effect, but also increases the complexity of the sweating device. In addition, the sweating simulation tube is also directly set under the bionic skin, so the local sweating amount is large, the water accumulation is more, and the simulated sweat evaporation is uneven, affecting the accuracy of the test.

[0006] The patent with the announcement number CN219142756U discloses a heating system and a heating manikin, which controls the temperature uniformly by heating the air, solving the defect of uneven resistance heating, but ignores the problem of heat dissipation. Even if the heating is uniform, there will still be temperature differences due to uneven heat dissipation. In addition, the structure of the circulating air supply system is relatively complex, the specific heat of air is small, and the heating efficiency using air is low.

[0007] The patent with announcement number CN105241914B discloses an inflatable sweating heated manikin, which also ensures the uniformity of heating by heating the air, but does not consider the heat dissipation problem. In addition, the amount of sweating cannot be controlled, and it is impossible to achieve the local sweating function or test special situations such as local sweating.

[0008] The patent with publication number CN110186946A discloses a skin model and a method for simulating temperature and sweating control. The skin model composed of a surface layer, a sweat source layer, and a heat source layer simulates the structure of human skin. Although human sweat is more liquid than gaseous, when performing a moisture resistance test, the dryness of the tested clothing will also affect the size of the moisture resistance. Clothing moisture resistance refers to the resistance of water vapor to evaporation and heat dissipation from the body to the external environment through the clothing and the surrounding boundary air layer. Therefore, it is more reasonable to test the clothing in a dry state. At least it is necessary to test the moisture resistance of the clothing in a dry state. However, the liquid sweat in this patent directly penetrates and it is easy to partially soak the clothing, making it impossible to complete the test in a dry state. Summary of the invention

[0009] The present application provides a sweating warm manikin tester and a control method to at least solve the moisture resistance test problem existing in the prior art.

[0010] According to the first aspect of the present application, a sweating warm body manikin tester is provided, comprising a manikin surface layer, an evaporation layer, a heating device, a support frame, a water supply device and a control circuit. The manikin surface layer and the evaporation layer are mounted on the support frame to form a humanoid structure. The manikin surface layer is located outside the evaporation layer. An evaporation cavity is provided on the inner or outer side of the evaporation layer so that the moisture in the evaporation layer can evaporate. The manikin surface layer is a mesh structure or is provided with a plurality of pores so that the steam in the evaporation layer can pass through the manikin surface layer to reach the outside of the manikin surface layer. The evaporation layer is provided with a water-absorbing material that can partially absorb and diffuse the simulated sweat delivered by the water supply device. The heating device can heat the manikin surface layer and the evaporation layer. The heating device and the water supply device are controlled by the control circuit.

[0011] Compared with the prior art, the sweating warm manikin tester of the present application has the following beneficial effects: During the test, the evaporation layer can absorb a large amount of simulated sweat, which can evaporate under the action of the heating device and be transported to the surface of the dummy through the pores. The prior art solution produces a large amount of liquid water on the surface of the bionic skin, while the technical solution of the present application produces a large amount of gaseous water on the surface of the dummy. When the clothing has good air permeability, that is, small moisture resistance, there will be basically no water accumulation on the surface of the dummy, so that the tested clothing is basically in a relatively dry state. Compared with traditional tests, due to the wet state of the dummy surface, water will gather downward under the action of gravity, and it is easy to accumulate water, causing the tested clothing to be wetted, the moisture resistance of the clothing to increase, and the breathability to decrease, which will affect the test results. In the technical solution of the present application, the evaporation layer does not contact the clothing, and in a relatively short time, for example, according to the approximate range of the moisture resistance of the clothing, the evaporated steam in half an hour will not cause the clothing to be wetted. In this way, the test data obtained is more accurate, and the tested clothing can also obtain more accurate moisture resistance.

[0012] In one embodiment, the mannequin surface layer includes an inner heat-conducting layer and an outer heat-conducting layer, a heating device is arranged between the inner heat-conducting layer and the outer heat-conducting layer, the heating device is a heating wire, the outer heat-conducting layer is provided with an embedded groove near the heating wire, the embedded groove is provided with a heat-resisting layer, and the cross-section of the heat-resisting layer is crescent-shaped so that the heat conduction speed of the heating wire in all directions is the same. In this way, the heat transfer rate in all directions is the same, making the temperature more uniform.

[0013] In one possible implementation manner, the inner side of the dummy surface is in direct surface contact with the evaporation layer and fixed together, so that the heat conduction efficiency is higher and the evaporation layer is conveniently heated.

[0014] In one possible implementation, the surface layer of the dummy is made of heat-resistant and high-temperature thermally conductive material so that the thermally conductive layer can withstand intermittent pulse high-temperature heating. High-temperature heating is less affected by temperature differences and can make heat conduction more uniform.

[0015] In one possible implementation, the dummy surface, evaporation layer, heating device and water supply device are divided into multiple independently controllable modules according to the position, each module is independently heated and the water supply is controlled by a separate water valve, and multiple module pressing frames are arranged outside the dummy surface, and the module pressing frames match the size and shape of the corresponding modules, and each dummy surface module is provided with at least four temperature sensors that can detect the temperature at different positions. In this way, each module is independently controlled and tested, and the four temperature sensors can obtain different temperatures. The thermal resistance and wet resistance at different temperature sensor positions can be converted according to the temperature, so that the thermal resistance and wet resistance obtained are more precise.

[0016] In one possible implementation manner, the evaporation layer is provided with through holes, which are connected to the air holes on the surface of the dummy. This design has better air permeability and better evaporation effect.

[0017] In one embodiment, a sealing layer is provided inside the evaporation layer, and a gap is provided between the evaporation layer and the sealing layer so that an evaporation cavity is formed between the evaporation layer and the sealing layer. The pores are connected to the evaporation cavity through through holes, so that a larger evaporation distance is provided to facilitate evaporation.

[0018] In one possible implementation, a heating layer is provided inside the evaporation layer, the heating layer is provided with a heating groove, a heating wire is provided inside the heating groove, and exhaust grooves are provided inside and outside the surface of the dummy, so that heating is more complete.

[0019] According to the second aspect of the present application, a control method for a sweating heating manikin tester is provided, wherein the heating wire is heated by an intermittent pulse high-temperature heating method, that is, the power is turned on for a certain period of time, such as 0.5 seconds, the heating wire is heated to a temperature higher than the target temperature, and then the power is turned off for a period of time, such as 5 seconds, and the temperature of the heating wire fluctuates greatly. The heating device of the manikin in the prior art is basically below 50°C, so that the temperature difference between the heating wire and the evaporation layer to be heated is small. Due to the different evaporation rates, even if the initial temperature is the same, the temperature of the heating wire will be differentiated as time goes by. The area with higher temperature of the heating wire has a larger resistance and a larger heating power, so that the temperature difference will become larger and larger. The pulse heating method of the present application increases the heating temperature, so that the temperature transfer speed is close to the same, which can reduce the temperature difference of the heating wire, and the difference in resistance value is reduced when the temperature difference is small, and the change in heating power is also reduced, so that the heating is more uniform, which can reduce the trend of the expansion of the temperature difference of the heating wire in the prior art.

[0020] In one embodiment, the heating temperature of the electric heating wire is 70°C-120°C, and the power-on time is less than the power-off time during pulse heating, so that the average temperature of the dummy surface is maintained at 34°C±0.5°C. Since the dummy is made of a lot of plastic materials and cannot withstand a large temperature, compared with the temperature difference of several degrees in the prior art, it can achieve the effect of equalizing the temperature, that is, the heat conduction speed tends to be the same.

[0021] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present application, nor is it intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present application will become readily understood. In the accompanying drawings, several embodiments of the present application are shown in an exemplary and non-limiting manner, wherein: In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0023] Figure 1 The overall schematic diagram of the sweating warm manikin tester according to the embodiment of the present application is shown; Figure 2 Shows Figure 1 Enlarged view of point A in the middle; Figure 3 A schematic diagram of the internal structure of a sweating warm manikin tester according to an embodiment of the present application is shown with the torso cut open; Figure 4 Shows Figure 3 Enlarged view of point B in the middle; Figure 5 Shows Figure 3 Schematic diagram of the cross-section at AA in the middle; Figure 6 Shows Figure 5 Enlarged view of point C in the middle; Figure 7 A schematic diagram of the surface structure of a sweating warm manikin tester according to an embodiment of the present application is shown; Figure 8 A front schematic diagram of the heating layer of the sweating heated manikin tester according to an embodiment of the present application is shown; Fig. 9 Different embodiments are shown Figure 5 Enlarged view of point C in the middle; Fig.10 Different embodiments are shown Figure 3 Sectional view at AA; Fig.11 Shows Fig.10 A partial enlarged schematic diagram of the middle and lower end; Fig.12 Shows Fig.11 Enlarged view of point E in the middle; Fig.13 Different embodiments are shown Figure 3 Sectional view at AA; Fig.14 Shows Fig.13 Enlarged view of point D in the middle.

[0024] Description of the numbers in the figure: 1. Surface layer of dummy; 2. Evaporation layer; 3. Heating device; 4. Support frame; 5. Water supply device; 6. Temperature sensor; 7. Electrode terminal; 8. Module pressing frame; 9. External bracket; 10. Air hole; 11. Exhaust groove; 12. Triangular pyramid convex structure; 13. Inner heat conduction layer; 14. Outer heat conduction layer; 15. Inner groove; 16. Heat-resisting layer; 20. Heating layer; 21. Heating groove; 22. Through hole; 23. Sealing layer; 24. Evaporation cavity; 2 5. Return water trough; 27. First evaporation layer; 28. Second evaporation layer; 29. ​​Atomizer; 31. Wiring terminal; 32. Heating wire; 33. First heating wire; 34. Second heating wire; 50. Water guide bar; 51. Water supply pipe joint; 52. Return water pipe joint; 53. Water pool; 54. Water pump; 55. Water valve; 56. Connecting pipe; 57. Water supply pipe; 58. Drainage trough; 59. Water absorption bar; 61. Temperature sensor joint; 71. Electrode joint. DETAILED DESCRIPTION

[0025] In order to make the purpose, features, and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0026] like Figure 1-14 As shown, the sweating warm body manikin tester includes a manikin surface layer 1, an evaporation layer 2, a heating device 3, a support frame 4, a water supply device 5 and a control circuit. The manikin surface layer 1 and the evaporation layer 2 are installed on the support frame 4 to form a human-shaped structure. The manikin surface layer 1 is located outside the evaporation layer 2. The manikin surface layer 1 is a mesh structure or is provided with a plurality of pores so that the steam of the evaporation layer 2 can pass through the manikin surface layer 1 to reach the outside of the manikin surface layer 1. The evaporation layer 2 is provided with a water-absorbing material that can partially absorb and diffuse the simulated sweat transported by the water supply device 5. The heating device 3 can heat the manikin surface layer 1 and the evaporation layer 2. The heating device 3 and the water supply device 5 are controlled by the control circuit.

[0027] The simulated sweat delivered by the water delivery device 5 to the evaporation layer 2 is heated to form gaseous simulated sweat, which has less impact on the tested clothing than liquid sweat and will not make the tested clothing soaked by the simulated sweat.

[0028] The support frame 4 is provided with a joint connection structure, and the height of the sweating warm body manikin tester is (1.7±0.15)m. The sweating warm body manikin tester is provided with multiple areas and each area is connected by a joint, and is provided with shoulder joints, elbow joints, knee joints, hip joints, ankle joints and other joints, each of which is movable, and can simulate various postures of the human body, such as standing posture or dynamic posture.

[0029] The surface of the sweating warm body manikin tester shall be divided into no less than 17 zones, and there shall be no less than 1 zone on the head, chest, back, abdomen, buttocks, left and right upper and lower arms, left and right hands, left and right thighs, left and right calves, and left and right feet. The heating and sweating functions of each zone shall be independently controlled. There are temperature measuring devices and heating devices 3 inside, and there are multiple protection measures such as flame retardant, heat insulation, and stable heat flow. The overall surface area of ​​the sweating warm body manikin tester is (1.8±0.3)㎡. The sweating warm body manikin tester has a static upright mode or a dynamic walking mode. The dynamic walking mode simulates the normal walking mode of a person. The swing speed control adjustment range of both hands and feet is (30~60) times / minute, ±2 times / minute; the stride of the foot is (63±10)cm, and the swing of the hand is (53±10)cm.

[0030] The temperature measuring device includes a plurality of temperature sensors 6. The temperature sensors 6 are located at the dummy surface layer 1 and the evaporation layer 2 to monitor different positions. In theory, the temperature of each position of the sweating warm body dummy tester should be kept as constant as possible.

[0031] The sweating device of a general sweating warm body manikin tester is mainly composed of a water supply system, a water constant temperature system and sweating skin. In this application, the sweating skin at least includes a manikin surface layer 1 and an evaporation layer 2. The water constant temperature system includes a heating device 3 and a temperature sensor 6. The water supply system, i.e., the water delivery device 5 of this application, adopts zoned water supply control. The amount of sweat in each sweating zone is controlled individually or regionally by a pipeline pump and a water valve, i.e., an electromagnetic valve. The water supply is controlled to each zone to simulate human sweating. The amount of sweat and the sweating rate are micro-controllable, and the sweating water supply rate indication error is ±3%. Generally speaking, the sweating water supply rate is (400~1200)mL / (h·m2). The sweating device can control and display the sweating water supply temperature, with a temperature control range of (20~50)℃, a temperature deviation of ±0.5℃, and a temperature indication error of ±0.5℃. According to the standard, it is 34℃±0.5℃.

[0032] The temperature control system is mainly composed of the internal heating device 3 of the sweating warm body manikin tester, the temperature control device and the data monitoring and processing device. At least 4 temperature sensors 6 are placed in each partition of the sweating warm body manikin tester. The specifications, layout, detection control, etc. of the temperature sensors 6 should meet the requirements of 5.1.1.2 and 5.1.1.4 in GB / T 39605-20. The surface temperature control range is (0~50)℃, the resolution is ≤0.1℃, the surface temperature deviation is ±0.5, the surface temperature indication error is ±0.5℃, and the surface temperature fluctuation is ≤0.2℃. The manikin tester has the power measurement and display function of each partition. The power indication error of each partition is ±2%. The detection ports of each partition for the power consumed to maintain the surface temperature when measuring the thermal resistance of the clothing and the detection ports of each partition for the power consumed by the sweating part of the sweating warm body manikin tester should be reserved.

[0033] When the sweating warm body manikin tester uses the evaporation method (or mass loss method) to measure the moisture resistance of clothing, the measurement range of the quality test system should meet the water evaporation during the moisture resistance test, or meet the measurement of the mass change of water input into the manikin body and the weight change of the manikin. It is mainly used to measure the moisture lost from the manikin during the clothing moisture resistance test. The display resolution of the quality test system is not less than 0.01g, and the indication error is ±0.10g.

[0034] The bottom of the sweating warm manikin tester is equipped with a water collection basin, in which paraffin is placed to collect and store water dripping from the manikin when measuring the moisture resistance of clothing using the evaporation method (mass loss method). Of course, when the technical solution of the present application is adjusted to an appropriate amount of sweating, no water will drip from the manikin. For complex manikin with particularly poor air permeability, water will drip only when the moisture resistance is very large.

[0035] The artificial climate chamber used in the sweating warm manikin tester should comply with the requirements of 5.2 in GB / T 39605-2020. The artificial climate chamber is equipped with an ambient temperature sensor 6, an ambient humidity sensor, and an ambient wind speed sensor, etc., which are mainly used to monitor the ambient temperature, humidity, and wind speed of the artificial climate chamber. The ambient temperature deviation is ±0.5°C, the relative humidity deviation is ±5%, and the wind speed deviation is ±20%.

[0036] The sweating warm manikin tester has an intelligent closed-loop temperature regulation system with functions such as temperature measurement, temperature control, calculation, analysis and alarm. The temperature and power measurement acquisition frequency shall not be less than 10 times per second. The surface temperature of each partition of the sweating warm manikin tester shall have functions such as control, measurement, and indication. The average surface temperature of the sweating warm manikin tester shall be calculated weighted by the area of ​​different regions.

[0037] When measuring the thermal resistance of clothing, the power consumed by each partition to maintain the surface temperature and the power consumed by the sweating part of the sweating manikin tester are calculated weighted by the area of ​​different areas. The timing function and pause function should work normally and stably.

[0038] Detection of dummy's height: Use a tape measure to measure the vertical distance from the horizontal plane where the dummy stands to the top of the head.

[0039] Detection of the overall surface area of ​​the dummy: Use a 3D scanner to scan the dummy to obtain its 3D point cloud data, then process the 3D point cloud data, obtain its 3D model through 3D reconstruction, and calculate the surface area of ​​each partition and the total surface area of ​​the dummy.

[0040] Testing of the swing speed, stride and swing amplitude of the hands and feet: The swing speed is tested by timing with an electronic stopwatch. The distance between the toes of the two feet is measured as the stride, and the distance between the two wrists at the base of the thumb is measured as the swing amplitude.

[0041] Detection of sweating water supply rate deviation: Connect the water pump detector to the instrument, set the sweating water supply rate, sweating water supply temperature and surface average temperature of the dummy, turn on the instrument, and record the water pump detector indication after the system reaches a stable state. Repeat the test 3 times, and take the average value of the 3 measurement results and the product of the dummy's total surface area as the sweating water supply rate. Or collect the sweating water supply in a container, measure the sweating water supply volume for a certain period of time through a timer, and obtain the sweating water supply rate in combination with the dummy's total surface area.

[0042] Detection of sweating water supply temperature: Turn on the sweating function of the device, heat the water to the detection temperature, and directly measure the sweating water supply temperature with a thermometer. Repeat the test 3 times, and take the average of the 3 measurement results as the measurement value of the sweating water supply temperature.

[0043] Detection of the surface temperature of the dummy partition: Measure the temperature within the partition of the dummy surface. According to the number of partitions and the location of the partitions, connect the distributed temperature sensors 6 of the multi-channel temperature measuring instrument to the center of each partition on the dummy surface. The number of temperature sensors 6 should not be less than the number of partitions of the dummy. Turn on the instrument, and start recording the temperature of each measuring point after the system reaches a stable state. The recording time interval is 2 minutes, and a total of 16 sets of data are recorded within 30 minutes. The average surface temperature of each measuring point in each partition is the surface temperature of the partition, and the maximum value of the change in all measuring points is taken as the temperature fluctuation.

[0044] Detection of indication error of power measurement system: Connect the standard power meter to the instrument, test each partition one by one, set the partition power, test in the power-balanced heating mode, and record the indication of the standard power meter. Repeat the test for each partition 3 times, and take the average of the 3 measurement results as the power indication of each partition.

[0045] Detection of indication error of quality test system: Refer to JJF1847-2020 to detect indication error and eccentric load error of quality test system.

[0046] Test of the thermal resistance of the trapped air layer on the naked surface under the standard conditions of the dummy benchmark definition: refer to the standard conditions in 3.2 of GB / T 18398-2001 for testing. Turn on the instrument and set the parameters. After the system reaches a stable state, record the displayed thermal resistance value of the dummy tester. Repeat the test 3 times.

[0047] Insulation resistance detection: Test according to the specified methods and requirements of GB / T5226.1-2019.

[0048] Detection of protective connection impedance: in accordance with the provisions of 6.5.1.3 of GB4793.1-2007.

[0049] Environmental adaptability test: carried out in accordance with the provisions of 5.9 of GB / T6587-2012.

[0050] The appearance of the coating on the surface of exposed parts shall comply with the requirements of FZ / T 90074-2021 Appearance Grade 1. The appearance of the coating on the surface of non-exposed parts shall comply with the requirements of FZ / T90074-2021 Appearance Grade 2.

[0051] Embodiment 1: like Figure 1 As shown, the surface of the sweating warm body manikin tester is covered by a manikin surface layer 1. For the convenience of manufacturing, the manikin surface layer 1 can be manufactured in different areas and assembled together. Figure 2 As shown, the dummy surface layer 1 is not a flat surface, but is provided with a plurality of air holes 10, and exhaust grooves 11 are provided near the air holes 10 for easy exhaust. In addition, in order to reduce the contact area between the dummy surface layer 1 and the tested clothing, a triangular pyramid-shaped protrusion structure 12 can be provided on the dummy surface layer 1.

[0052] like Figure 3 and Figure 4 As shown, the internal structure of the sweating warm manikin tester can be seen by cutting it open. In the figure, the support frame 4 only shows that other structures are installed on the support frame 4. The actual structure can be designed according to the specific partition setting. The sweating warm manikin tester includes the connection terminal 31 of the heating device 3, the water supply pipe joint 51, the return pipe joint 52, the temperature sensor joint 61 and the electrode joint 71.

[0053] like Figure 5 and Figure 6 As shown, the dummy surface layer 1 is provided with an evaporation layer 2, the evaporation layer 2 is provided with a heating layer 20, the heating layer 20 is provided with a heating groove 21, the heating groove 21 is provided with an electric heating wire 32, and the inner and outer sides of the dummy surface layer 1 are uneven and both are provided with exhaust grooves 11, so as to facilitate the evaporation and exhaust of the evaporation layer 2. A water supply pipe joint 51 is installed on the heating layer 20, and the heating layer 20 is provided with a connecting hole to ensure that the water supply pipe joint 51 can transport the simulated sweat to the evaporation layer 2.

[0054] like Figure 7 and Figure 8 As shown, the dummy surface layer 1 and the heating layer 20 adopt a modular design. The dummy surface layer 1 and the corresponding heating layer 20 are the same size and can be installed on the corresponding support frame 4, which is convenient for manufacturing.

[0055] Embodiment 2: like Fig. 9 As shown, the dummy surface layer 1 adopts a mesh structure with good air permeability. In this way, the dummy surface layer 1 is relatively flat and can also have a small amount of water absorption performance. The remaining structures can refer to Example 1.

[0056] Embodiment 3: like Fig.10 , Fig.11 and Fig.12 As shown, in one embodiment, the dummy surface layer 1 includes an inner heat-conducting layer 13 and an outer heat-conducting layer 14, the inner heat-conducting layer 13 and the outer heat-conducting layer 14 are made of aluminum, the outer heat-conducting layer 14 can also be made of a ceramic material with a lower thermal conductivity, but the surface close to the evaporation layer 2 is insulated, a heating device 3 is provided between the inner heat-conducting layer 13 and the outer heat-conducting layer 14, the heating device 3 is a heating wire 32, the outer heat-conducting layer 14 is provided with an embedded groove 15 near the heating wire 32, the embedded groove 15 is provided with a heat-resisting layer 16, the heat-resisting layer 16 can be made of a ceramic material with a lower thermal conductivity than the inner heat-conducting layer 13 and the outer heat-conducting layer 14, and the cross-section of the heat-resisting layer 16 is crescent-shaped so that the heat conduction speed of the heating wire 32 in all directions is the same. In conventional designs, the closer to the heating wire 32, the higher the temperature. Different distances in different directions will cause temperature differences. In actual use, it is necessary to ensure that the temperature of the contact position of the inner heat-conducting layer 13 and the evaporation layer 2 is the same. The use of a crescent-shaped barrier layer can change the heat conduction speed in different directions, so that the temperature of the contact position is more balanced, which can produce a better evaporation effect, that is, the evaporation is more uniform, so that the temperature of the heating wire 32 is also more uniform, and there will be no large temperature difference, which will cause the position with high temperature to have a large resistance and higher heating power, further expanding the harmful effect of the temperature difference. Usually, the evaporation of water in the evaporation layer 2 will take away a lot of heat, so the heating power of the heating wire 32 on the side close to the evaporation layer 2 must be larger to achieve temperature balance, that is, the thermal conductivity of the inner heat-conducting layer 13 material on this side must be higher than the thermal conductivity of the outer heat-conducting layer 14 material, for example, the inner heat-conducting layer 13 is thinner, or the inner heat-conducting layer 13 is made of metal material and the outer heat-conducting layer 14 is made of polymer material.

[0057] In one embodiment, the inner side of the dummy surface layer 1 is in direct surface contact with the evaporation layer 2 and fixed together, so that the contact effect is better and the heat conduction is faster and more uniform.

[0058] In one embodiment, the dummy surface layer 1 is made of heat-resistant and high-temperature-resistant heat-conducting material so that the heat-conducting layer can withstand intermittent pulse high-temperature heating. Of course, high temperature is a relative high temperature. The conventional dummy heating temperature is lower than 50°C. The high temperature in this application refers to higher than 70°C. The higher the temperature, the smaller the difference in resistance value at each position, making the heating at each position more uniform and reducing the influence of temperature difference on resistance value.

[0059] In one embodiment, the evaporation layer 2 is provided with a through hole 22, and the through hole 22 is connected to the air hole 10 of the dummy surface layer 1. In this way, a large amount of steam in the evaporation layer 2 can be quickly discharged to the outside through the through hole 22.

[0060] In one embodiment, a sealing layer 23 is provided inside the evaporation layer 2, and a gap is provided between the evaporation layer 2 and the sealing layer 23 so that an evaporation cavity 24 is formed between the evaporation layer 2 and the sealing layer 23, and the pores 10 are connected to the evaporation cavity 24 through the through hole 22. The sealing layer 23 can be directly fixed on the support frame 4 and can be assembled together in a modular design.

[0061] In one embodiment, a return water groove 25 is provided at the lower end of the evaporation layer 2, and a return water pipe joint 52 is provided in the return water groove 25. Water recycling is achieved through the return water pipe joint 52, and accumulated water can be prevented from passing through the dummy surface layer 1 and contacting the tested clothing to affect the moisture resistance test. The evaporation speed of the evaporation layer 2 is different in different tests, so water accumulation may occur in some tests, and a collection device needs to be provided. The internal collection device can be recycled, which is more water-saving.

[0062] In one embodiment, a water collection basin is provided below the dummy surface layer 1 , and water will accumulate in the clothing during testing of some clothing with greater moisture resistance, which needs to be collected.

[0063] Embodiment 4: like Fig.13 and Fig.14As shown, in one embodiment, the evaporation layer 2 includes a first evaporation layer 27 and a second evaporation layer 28, the first evaporation layer 27 is heated by a first heating wire 33, and the second evaporation layer 28 is heated by a second heating wire 34. The first evaporation layer 27 is located outside the second evaporation layer 28, a heating layer 20 is provided inside the second evaporation layer 28, the heating layer 20 is provided with a heating groove 21, the heating groove 21 is provided with a second heating wire 34, an inner heat conductive layer 13 and an outer heat conductive layer 14 are provided outside the first evaporation layer 27, and a first heating wire 33 is provided between the inner heat conductive layer 13 and the outer heat conductive layer 14, so that the evaporation area is larger, the evaporation speed is faster, and the evaporation effect is better, that is, the evaporation is more uniform and the temperature is more uniform. To ensure that the dummy surface layer 1 is at 34° C., the dummy surface layer 1, the first evaporation layer 27, and the second evaporation layer 28 are independently provided with heating wires 32 and corresponding temperature sensors 6, that is, at least three heating wires 32 are provided for heating respectively, and the heating time is adjusted so that each position is maintained at 34° C., so that more uniform temperature control can be achieved and the phenomenon of excessively high or low local temperature can be avoided.

[0064] In one embodiment, an evaporation cavity 24 is provided between the first evaporation layer 27 and the second evaporation layer 28, and an atomizer 29 is provided at the bottom of the evaporation cavity 24. When there is too much water between the first evaporation layer 27 and the second evaporation layer 28, water may accumulate in the evaporation cavity 24. The atomizer 29 can be used to atomize the accumulated water, so that the evaporation efficiency is higher. The atomizer 29 can use piezoelectric ceramics to generate ultrasonic vibration to atomize water droplets, which is the same as the principle of a humidifier. The atomized water droplets are easily evaporated by heat. A third heating wire can be set in the evaporation cavity 24 for heating, and the first evaporation layer 27 heated by the first heating wire 33 and the second evaporation layer 28 heated by the second heating wire 34 can also be used to heat the atomized water droplets to achieve evaporation. The first heating wire 33 mainly ensures that the surface layer 1 of the dummy maintains a certain temperature, the second heating wire 34 mainly maintains the temperature of the second evaporation layer 28, and the third heating wire maintains the temperature of the evaporation cavity 24. In this way, water accumulation inside the sweating warm body dummy can be avoided, and there is no need to set up a circuit to collect the accumulated water. The evaporation layer 2 is provided with a through hole 22, the inner heat conductive layer 13 and the outer heat conductive layer 14 are provided with an air hole 10, and a hole plug made of a water-filtering and breathable material is provided in the air hole 10. The hole plug is supported by a hydrophobic material so that water droplets cannot pass through, but water vapor can pass through the hole plug. The through hole 22 can also be covered with a water-insulating and breathable film to achieve the same function, and the air permeability is good, so the hole plug may not be provided.

[0065] In one embodiment, the mannequin surface layer 1, the evaporation layer 2, the heating device 3 and the water supply device 5 are divided into a plurality of independently controllable modules according to the position, each module is independently heated and the water supply is controlled by a separate water valve, and a plurality of module pressing frames 8 are arranged outside the mannequin surface layer 1, and each module is provided with at least four temperature sensors 6 to make the temperature measurement more accurate. Compared with the prior art, three temperature sensors are added, so that each area has an expanded "thermal resistance and moisture resistance value" to increase by four times, and the thermal resistance and moisture resistance of the four positions can be measured, so that the thermal resistance and moisture resistance measurement is more precise. For example, the four temperature sensors are A, B, C, and D, respectively. The temperature at A is higher. Since the heating power is constant, the moisture resistance and thermal resistance at A are larger, and the temperature at B is lower. Then the moisture resistance and thermal resistance at B are larger than that at A. This may be the difference between different positions of the tested clothing, such as some positions are thicker, and some positions are closer to the armpits and have higher temperatures. The temperatures at C and D are close, but the ventilation conditions at C are worse than those at D. For example, C is closer to the armpits or crotch, so it can be considered that the moisture resistance and thermal resistance at C are smaller than those at D. In addition, if the surface of the sweating warm manikin tester is divided into 32 functional areas and four temperature sensors are set in each functional area, the thermal resistance and moisture resistance of 128 positions can be calculated, which greatly improves the precision of the detection.

[0066] In one embodiment, the module pressing frame 8 matches the size and shape of the corresponding module. The water valve is a solenoid valve that controls the water supply by controlling the opening time and frequency. The specific control needs to be carried out according to the water content of the evaporation layer 2, or it can be adjusted multiple times until the temperature and power reach a balanced state. The module pressing frame 8 is fixed by an external bracket 9.

[0067] In one embodiment, the water supply device 5 includes a water pool 53, a water pump 54, a water valve 55, a connecting pipe 56 and a water supply pipe 57. A heating device 3 is provided in the water pool 53 to ensure the temperature in the water pool 53 is stable. The connecting pipe 56 is a circulation pipe, which connects the water pool 53 with the water pump 54 and delivers excess water from the water pump 54 to the water pool 53. The water supply pipe 57 has the same or similar length and is connected to the part pipe. The water supply pipe 57 is provided with a water valve 55 to control the flow of the water supply pipe 57.

[0068] In one embodiment, the outlet of the water supply pipe 57 is provided with a transverse drainage groove 58, and a transversely arranged water absorption strip 59 is provided in the drainage groove 58. The water absorption strip 59 is made of fiber material and has a good water absorption effect, and can evenly spread the simulated sweat to each area, so that the water content of each area is more uniform.

[0069] In one embodiment, the evaporation layer 2 is provided with a plurality of electrode terminals 7, and the electrode terminals 7 are connected to the test device through wires so that the resistance between the electrode terminals 7 can be measured. Soluble salt needs to be added to the simulated sweat, which can increase the conductivity. After the evaporation layer 2 has a certain salt content, no salt needs to be added to the simulated sweat, or only a small amount of salt is added. Since the water evaporates but the salt remains in the evaporation layer 2, the loss of salt is very small. If the concentration of the simulated sweat salt is high, a large amount of salt will accumulate in the evaporation layer 2, and the resistance will become smaller and smaller. Before each clothing test, the resistance of the evaporation layer 2 in a water-saturated state can be measured, and a comparative analysis can be performed after obtaining a benchmark value.

[0070] In one embodiment, the evaporation layer 2 is provided with a plurality of water guide strips 50 extending transversely. The water guide strips 50 are made of fiber material and have a good water absorption effect, and can evenly diffuse the simulated sweat to each area, so that the water content of each area is more uniform. In the prior art, the water outlet is a hole, and a triangular area is formed under the action of gravity. The water content of this area is higher, so that the average water content above is lower. The technical solution of the present application can diffuse water to each area, and then penetrate downward, so that the overall water content is more uniform.

[0071] Embodiment 5: The control method of the sweating heating manikin tester is that the heating wire 32 is heated by an intermittent pulse high-temperature heating method, that is, the power is turned on for a certain period of time, the heating wire 32 is heated to a temperature higher than the target temperature, and then the power is turned off for a period of time, and the temperature of the heating wire 32 fluctuates greatly. This method is suitable for the evaporation method to test the moisture resistance, and it is also theoretically feasible for the heat dissipation method to detect the moisture resistance. The standard requires constant power, that is, the power fluctuation does not exceed 3%. The household power supply is alternating current, that is, pulse current, non-continuous direct current. Therefore, the power fluctuation is not an instantaneous power fluctuation, but a constant work for a long time. For example, using 10 kilowatts of power to heat for 1 second and then turning off the power for 9 seconds is the same as the work of continuously using 1 kilowatt for 10 seconds. In this way, the final heat output of 10 kilowatts of intermittent heating for 1 minute and 1 kilowatt of continuous heating for 1 minute is the same, but the heat transfer is different, and the power of heating at different positions is more balanced.

[0072] In one embodiment, the heating temperature of the heating wire 32 is 70°C-120°C, and the power-on time is less than the power-off time during pulse heating, so that the average temperature of the dummy surface layer 1 is maintained at 34°C±0.5°C. The temperature difference of the dummy surface layer 1 is also within a few degrees when the dummy surface layer 1 is heated for half an hour using conventional methods. For example, the temperature of the dummy surface layer 1 at the hand position is 30°C, the temperature of the dummy surface layer 1 at the chest position is 34°C, and the temperature of the dummy surface layer 1 at the crotch position is 36°C. If the temperature of the heating wire 32 is 38°C at this time, the heating wire 32 does not need to be too high to achieve a relatively close temperature difference.

[0073] If the heat-resisting layer 16 is designed to be thicker or has a lower thermal conductivity, the heating temperature of the heating wire 32 can be increased to above 200° C., so that the resistance of the heating wire 32 is less affected by temperature, making the heating power at each position more uniform and avoiding the expansion of temperature differences.

[0074] In one embodiment, a test device is used to measure the resistance between the electrode terminals 7 to predict the water content. The test device is an ordinary ohmmeter or a multimeter. When the resistance is small, the water valve 55 is controlled to reduce the opening time or close the water flow. When the resistance is large, the opening time is increased or the water valve 55 is opened. The test device only tests the resistance between a pair of electrode terminals 7 each time to avoid mutual interference, making the test more accurate. In one embodiment, the resistance value of the evaporation layer 2 in different states can be measured first, and a first resistance value is obtained when the evaporation layer 2 is in a completely wet state, and a second resistance value is obtained when the evaporation layer 2 is in a semi-wet state. When the measured resistance is close to the first resistance value, the water valve 55 is controlled to reduce the opening time or close the water flow. When the measured resistance is close to the second resistance value, the opening time is increased or the water valve 55 is opened.

[0075] In one embodiment, the control of the water valve 55 includes time control and frequency control. For the evaporation layer 2 area to which the same water valve 55 delivers water, when the water content at the upper end of the evaporation layer 2 is greater than the water content at the lower end, the opening frequency of the water valve 55 is reduced, but the single opening time of the water valve 55 is extended. When the water content at the upper end of the evaporation layer 2 is less than the water content at the lower end, the opening frequency of the water valve 55 is increased, but the single opening time of the water valve 55 is reduced.

[0076] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this application can be executed in parallel, sequentially or in different orders, as long as the expected results of the technical solution of this application can be achieved, and this document does not limit this.

[0077] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0078] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. Sweating heated manikin tester, characterized by: The invention comprises a dummy surface layer (1), an evaporation layer (2), a heating device (3), a support frame (4), a water supply device (5) and a control circuit. The dummy surface layer (1) and the evaporation layer (2) are mounted on the support frame (4). The dummy surface layer (1) is located outside the evaporation layer (2). An evaporation cavity (24) is provided inside or outside the evaporation layer (2) so that water in the evaporation layer (2) can evaporate. The dummy surface layer (1) is a mesh structure or is provided with a plurality of pores (10) so that steam in the evaporation layer (2) can pass through the dummy surface layer (1) to reach the outside of the dummy surface layer (1). The evaporation layer (2) is provided with a water-absorbing material capable of absorbing and diffusing simulated sweat delivered by the water supply device (5). The heating device (3) can heat the dummy surface layer (1) and the evaporation layer (2). The heating device (3) and the water supply device (5) are controlled by the control circuit.

2. The sweating warm manikin tester according to claim 1, characterized in that: The mannequin surface layer (1) comprises an inner heat-conducting layer (13) and an outer heat-conducting layer (14); the heating device (3) is provided between the inner heat-conducting layer (13) and the outer heat-conducting layer (14); the heating device (3) is an electric heating wire (32); the outer heat-conducting layer (14) is provided with an embedded groove (15) near the electric heating wire (32); the embedded groove (15) is provided with a heat-resisting layer (16); the cross-section of the heat-resisting layer (16) is crescent-shaped so that the heat conduction speed of the electric heating wire (32) in all directions is the same.

3. The sweating warm manikin tester according to claim 2, characterized in that: The inner side of the dummy surface layer (1) is in direct surface contact with the evaporation layer (2) and is fixed together.

4. The sweating warm manikin tester according to claim 3, characterized in that: The dummy surface layer (1) is made of heat-resistant thermal conductive material so that the dummy surface layer can withstand intermittent pulse heating.

5. The sweating warm manikin tester according to claim 4, characterized in that: The dummy surface layer (1), the evaporation layer (2), the heating device (3) and the water supply device (5) are divided into a plurality of independently controllable modules according to their positions. Each module is independently heated and the water supply is controlled by a separate water valve (55). The dummy surface layer (1) is provided with a plurality of module pressing frames (8) outside. The module pressing frames (8) match the size and shape of the corresponding modules. Each module of the dummy surface layer (1) is provided with at least four temperature sensors (6) capable of detecting the temperature at different positions.

6. The sweating warm manikin tester according to claim 5, characterized in that: The evaporation layer (2) is provided with a through hole (22), and the through hole (22) is connected to the pore (10) of the dummy surface layer (1).

7. The sweating heated manikin tester according to any one of claims 1 to 6, characterized in that: A sealing layer (23) is provided on the inner side of the evaporation layer (2), a gap is provided between the evaporation layer (2) and the sealing layer (23), so that an evaporation cavity (24) is formed between the evaporation layer (2) and the sealing layer (23), the pores (10) are in communication with the evaporation cavity (24), and a water return groove (25) is provided at the lower end of the evaporation layer (2).

8. The sweating warm manikin tester according to claim 1, characterized in that: A heating layer (20) is provided on the inner side of the evaporation layer (2), the heating layer (20) is provided with a heating groove (21), a heating wire (32) is provided in the heating groove (21), and exhaust grooves (11) are provided on the inner side and the outer side of the dummy surface layer (1).

9. A method for controlling a sweating warm manikin tester, using the sweating warm manikin tester according to claim 7, characterized in that: The heating wire (32) of the sweating manikin tester is heated by an intermittent pulse heating method, that is, the heating wire (32) is heated to a temperature higher than a target temperature by switching on the power and then switching off the power, and the temperature of the heating wire (32) fluctuates greatly by repeatedly switching on and off the power.

10. The control method of the sweating heated manikin tester according to claim 9, characterized in that: The heating temperature of the electric heating wire (32) is greater than 70°C, and the power-on time is less than the power-off time during pulse heating, so that the average temperature of the dummy surface layer (1) is maintained at 34°C±0.5°C.

Images