Clothing waterproof detection device, method, equipment and storage medium

Abstract

The application discloses a kind of clothing waterproof detection device, method, equipment and storage medium, method includes: test platform, compression ring, water pressure loading mechanism, thermal imager and control mechanism;Compression ring is set above test platform, vertical lifting motion is driven by drive mechanism, and the clothing sample to be measured is pressed tightly and fixed on test platform;Water pressure loading mechanism includes water pump, water supply line communicated with water pump, motor valve arranged on water supply line, pressure sensor connected with water supply line, and the water outlet end of water supply line faces the upper surface of the clothing sample to be measured;Thermal imager is set above test platform;Control mechanism controls the opening of motor valve to adjust water pressure, and when actual water pressure reaches preset pressure value, pressure maintaining timing is started, and whether cold spot appears in temperature field image collected by thermal imager, the area of cold spot and the formation rate of cold spot are used to determine waterproof performance.The application improves the detection efficiency of clothing waterproof detection and the reliability of determination result.

Description

Technical Field

[0001] This application relates to the technical field of clothing performance testing, and in particular to a clothing waterproof testing device, method, equipment, and storage medium. Background Technology

[0002] Currently, the hydrostatic pressure method is commonly used to test the waterproof performance of clothing. This involves clamping the fabric sample to be tested onto a test platform, applying gradually increasing water pressure from one side, and then visually observing whether water droplets penetrate the other side to determine its water pressure resistance level.

[0003] This type of method has significant drawbacks: First, the judgment process is highly dependent on the operator's subjective experience and visual judgment, and is easily affected by lighting conditions, observation angle and individual differences, resulting in poor repeatability of test results; second, traditional methods can only provide a qualitative conclusion of "leaking / not leaking", and it is difficult to quantitatively assess the degree of leakage; third, during the pressure holding process, small or slow leaks are often difficult to detect in time, which can easily lead to missed judgments.

[0004] Furthermore, most existing testing equipment uses water pressure control methods that lack real-time feedback, resulting in significant fluctuations in the actual applied pressure and affecting test consistency. Although some devices have attempted to introduce visible light cameras to assist in recording the water seepage process, their reliance on ambient light and the susceptibility of water droplet reflections to image misinterpretation mean that overall detection efficiency and the reliability of judgment results remain low, thus requiring improvement. Summary of the Invention

[0005] In order to overcome the shortcomings of the existing technology and improve the detection efficiency and reliability of the judgment results of waterproof clothing testing, this application provides a waterproof clothing testing device, method, equipment and storage medium.

[0006] Firstly, the objective of this invention is achieved through the following technical solution: A waterproof testing device for clothing includes: a testing platform, a pressure ring, a water pressure loading mechanism, a thermal imager, and a control mechanism; The testing platform is used to hold the clothing samples to be tested; The pressure ring is positioned above the test platform and is driven by a drive mechanism to move vertically upwards and downwards, used to press and fix the garment sample to be tested onto the test platform. The water pressure loading mechanism includes a water pump, a water supply pipeline connected to the water pump, a motor valve installed on the water supply pipeline, and a pressure sensor connected to the water supply pipeline. The water outlet of the water supply pipeline faces the upper surface of the clothing sample to be tested, so as to apply controllable water pressure. The thermal imager is positioned above the test platform and is used to acquire temperature field images of the surface of the garment sample under test during the water pressure loading process. The control mechanism is electrically connected to the drive mechanism, the motor valve, the pressure sensor, and the thermal imager, respectively. It is used to control the opening of the motor valve according to a preset pressure value to adjust the water pressure, and to start the pressure holding timer when the actual water pressure fed back by the pressure sensor reaches the preset pressure value. At the same time, it controls the thermal imager to continuously acquire temperature field images during the pressure holding timer, and to determine the waterproof performance based on whether cold spots appear in the acquired temperature field images, the area of ​​the cold spots, and the formation rate of the cold spots, so as to obtain the waterproof performance determination result of the clothing sample to be tested.

[0007] By adopting the above technical solution, this invention provides an intelligent clothing waterproof testing device based on thermal imaging and closed-loop water pressure control, which uses thermal imaging technology to detect the waterproof performance of clothing under pressurized water conditions. Its core physical basis is that when water penetrates the surface of clothing, due to the heat absorption during evaporation, a low-temperature area (i.e., a "cold spot") is formed locally. The thermal imager can capture the temperature anomalies of the cold spots. In practical applications, the water outlet of the water supply pipe is directed to spray water vertically upwards from below the test platform. To ensure that the water outlet of the water supply pipe faces the upper surface of the pressed clothing sample for testing, simulating the waterproof performance of clothing under actual wearing conditions (water pressure applied from the outside of the clothing), the outer surface of the clothing sample needs to be facing the water outlet of the water supply pipe (i.e., the outer surface of the clothing is pressed tightly against the upper surface of the test platform) during the testing operation.

[0008] Specifically, the testing workflow of the garment waterproofing testing device is as follows: ① Place the garment sample on the testing platform; ② Press down the pressure ring to fix the sample; ③ Start the water pump, and the motor valve automatically adjusts the opening according to the set pressure; ④ The pressure sensor monitors the water pressure, and automatically starts the pressure holding timer after reaching the preset value; ⑤ During the entire pressure holding time, the thermal imager continuously records the temperature field of the garment surface; at the same time, the control mechanism analyzes the cold spots: whether they appear (whether there is water seepage), the size of the area (the range of water seepage), and the formation speed (the speed of waterproofing failure); and automatically determines whether it is qualified by comparing it with the preset standard.

[0009] This application utilizes the physical characteristic of water penetration forming low-temperature areas (i.e., "cold spots") on the surface of clothing due to evaporation and heat absorption, thus achieving objectivity and automation in waterproof performance assessment. The control mechanism not only determines whether cold spots appear but also quantifies their area and formation rate, enabling multi-dimensional evaluation of waterproof failure and enhancing the richness of testing dimensions and accuracy. Simultaneously, a pressure sensor provides real-time feedback of water pressure, and the control mechanism dynamically adjusts the motor valve opening, forming a closed-loop pressure control system. This ensures that the water pressure remains stable at a preset value during the pressure holding and timing phase, eliminating testing errors caused by water pressure fluctuations. The accuracy of the testing environment conditions is high. From sample fixation, pressurization start-up, pressure holding and timing to image acquisition and intelligent judgment, the entire process is automatically executed by the control mechanism, significantly shortening the testing cycle, optimizing the overall testing efficiency, and ensuring high reliability of the judgment results.

[0010] In a preferred embodiment of this application, the control mechanism is configured as follows: During the pressure holding time, the temperature field image acquired by the thermal imager is processed in real time to identify areas with temperatures lower than the ambient reference temperature threshold as candidate cold spots. Combined with time series analysis, false cold spots caused by environmental disturbances or equipment noise are eliminated, and only areas that persist and show an increasing trend in area are retained as effective cold spots. The initial appearance time, maximum cold spot area, and area growth rate per unit time of the effective cold spot are compared with the preset multidimensional judgment criteria. If any indicator exceeds the corresponding threshold in the preset multidimensional judgment criteria, the waterproof performance of the garment sample to be tested is determined to be unqualified.

[0011] By adopting the above technical solution, the temperature field images acquired by the thermal imager are processed in real time during the pressure holding time. Combined with time series analysis, false cold spots caused by environmental disturbances or equipment noise are eliminated, retaining only valid cold spots that persist and show an increasing area trend. This effectively improves the accuracy and anti-interference capability of cold spot identification. Furthermore, based on a comprehensive comparison of multi-dimensional indicators such as the initial appearance time of valid cold spots, the maximum cold spot area, and the area growth rate with preset judgment criteria, a quantitative, objective, and refined evaluation of waterproof performance is achieved, avoiding the subjectivity and lag inherent in visual judgment by testing personnel.

[0012] In a preferred embodiment, this application also includes a cabinet, and the drive mechanism includes a servo motor; The cabinet is equipped with a motor housing, which is located at the top of the cabinet. The servo motor located inside the motor housing is connected to the pressure ring drive via a lifting reducer. The water pump is located inside the cabinet; the water supply pipeline is connected between the water pump and the pressurization area above the test platform, and the pressure sensor is installed in the water supply pipeline.

[0013] By adopting the above technical solution and setting up an integrated cabinet structure, and rationally arranging core components such as servo motors, lifting reducers, and water pumps inside the cabinet (e.g., the motor housing is located at the top, and the water pump is placed inside the cabinet), not only is the overall space utilization optimized, but the compact integration of mechanical transmission and fluid systems is also achieved. The servo motor drives the pressure ring through the lifting reducer, ensuring smooth clamping action and precise positioning; the rational arrangement of water supply pipelines and pressure sensors ensures the stability and measurement accuracy of water pressure loading. The overall structural design improves the operational reliability of the device.

[0014] In a preferred embodiment of this application: the test platform is located in the middle of the cabinet, the thermal imager is fixed to the top of the cabinet and located above the pressure ring, so that the optical lens of the thermal imager passes through the pressure ring and faces the central area of ​​the test platform; The control mechanism includes a control panel located on the front of the cabinet, which is electrically connected to the servo motor, the motor valve, the pressure sensor, and the thermal imager via cables.

[0015] By adopting the above technical solution, the test platform is set in the middle of the cabinet, the thermal imager is fixed on the top of the cabinet and its optical lens passes through the pressure ring and faces the center of the test area. This ensures that the thermal imager can still observe the sample surface temperature field without obstruction, vertically and with high resolution when the pressure ring is pressed down, avoiding image distortion or temperature measurement deviation caused by viewing angle shift or structural obstruction.

[0016] In a preferred embodiment of this application: the test platform is provided with multiple water outlet channels spaced apart in the middle, the water supply pipeline includes multiple branch pipelines, and the multiple water outlet channels are arranged one-to-one with the multiple branch pipelines; the water outlet end of the branch pipeline is located in the water outlet channel; the motor valve is located on the branch pipeline near the water outlet end.

[0017] By adopting the above technical solution, multiple water outlet channels are opened at intervals in the middle of the test platform, and corresponding multi-branch water supply pipelines and independent motor valves are configured, so that water pressure can be applied to different local areas as needed. The water outlet end of the branch pipeline is located in the water outlet channel, which helps to distribute the water flow evenly and reduce splashing; the motor valve is set close to the water outlet end, which can realize rapid response and precise control of local water pressure.

[0018] Secondly, the objective of this invention is achieved through the following technical solution: A method for testing the waterproofness of clothing includes: The garment sample to be tested is placed on the testing platform and pressed and fixed by a pressure ring driven by a servo motor; The water pressure loading mechanism is activated, and water pressure is applied to the upper surface of the garment sample to be tested through the water pump and water supply pipeline. The water pressure is adjusted by the motor valve installed on the water supply pipeline, and the actual water pressure is monitored in real time by the pressure sensor. When the actual water pressure reaches the preset pressure value, the pressure holding timer is started, and the pressure holding timer period begins. During the pressure holding time, a thermal imager positioned above the test platform continuously acquires temperature field images of the surface of the garment sample to be tested. Based on the acquired temperature field image, the presence of cold spots, the area of ​​the cold spots, and the formation rate of the cold spots are analyzed. Based on the analysis results, it is determined whether the waterproof performance of the clothing sample under test is qualified.

[0019] By adopting the above technical solution, this invention applies controllable water pressure to the garment sample after it is pressed and fixed, and continuously acquires surface temperature field images using a thermal imager during the pressure holding time. The appearance, area, and formation rate of cold spots are used as criteria for waterproof performance, achieving non-contact, visual, and dynamic water seepage detection. Compared with traditional methods that rely on visual observation of water droplet penetration or weighing to determine the amount of water seepage, this method does not require damaging the sample and has a high degree of automation in the detection process.

[0020] In a preferred example of this application: before testing, the garment sample to be tested is pre-divided into multiple fabric sections according to the garment structure, the fabric sections including shoulder section, chest section, cuff section and hem section; In a single test, one of the target fabric sections is placed in the pressure area of ​​the test platform and fixed by pressure rings; During the pressure holding time, the thermal imager acquires temperature field images of the target fabric zone, and identifies cold spot information of the target fabric zone based on the temperature field images. The cold spot information includes the cold spot appearance time, cold spot area, and area growth rate. The cold spot information is compared with the preset waterproofing threshold corresponding to the target fabric partition; If the preset waterproofing threshold is exceeded, a local pressure compensation test is triggered on the target fabric zone: the motor valve is controlled to apply incremental water pressure to the pressurized area in a stepped manner, and cold spot response data is collected simultaneously. Based on the cold spot response data, it is determined whether there is a local waterproof failure in the target fabric section. After completing the zone-by-zone test of all preset fabric sections, the overall waterproof performance judgment result of the garment sample under test is updated by combining the test results of each fabric section.

[0021] By adopting the above technical solution, the garment is pre-divided according to its structure before testing, and a single test focuses on a target fabric section. The evaluation is then performed by combining the specific cold spot information and judgment threshold of that section, achieving refined waterproof performance analysis for real-world wearing scenarios. Furthermore, a local pressure compensation testing method is introduced. When an anomaly is detected, step-wise pressure is automatically applied and cold spot response data is collected, accurately identifying local waterproof weaknesses and their failure thresholds. Finally, a comprehensive judgment is made by summarizing the test results of all sections, making the waterproof evaluation of the entire garment more closely resemble real-world usage conditions. This overcomes the misjudgments or resource waste caused by the traditional "overall veto" approach, improving the engineering practicality and product compatibility of the testing.

[0022] In a preferred embodiment of this application, comparing the cold spot information with a preset waterproofing threshold corresponding to the target fabric section includes: Based on the type information of the garment to be tested and the target fabric partition identifier of the current test, the corresponding preset partition waterproof judgment threshold is retrieved from the pre-stored garment type-partition threshold mapping table. The preset waterproofing threshold for different fabric zones is designed with differentiated standards, including: a relatively lenient threshold for the growth rate of cold spot area for the shoulder and cuff areas, and a stricter threshold for the appearance time of cold spots for the chest and hem areas, in order to reflect the differences in waterproofing sensitivity of each zone in actual wear.

[0023] By adopting the above technical solution, based on the type of clothing and the current test zone identifier, differentiated zone waterproof judgment thresholds are retrieved from the pre-stored mapping table (such as using a more lenient area growth rate threshold for the shoulders and cuffs, and a stricter occurrence time threshold for the chest and hem), so that the judgment criteria match the water pressure exposure intensity and functional importance of each part in actual wear, significantly improving the rationality and fairness of the test results.

[0024] Thirdly, the objective of this invention is achieved through the following technical solution: A computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the above-described method for detecting waterproof clothing.

[0025] Fourthly, the objective of this invention is achieved through the following technical solution: A computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the above-described method for detecting waterproof clothing.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By organically combining the controllable water pressure loading mechanism with non-contact thermal imaging detection technology, the control mechanism achieves closed-loop linkage. Utilizing the physical characteristics of water evaporating and absorbing heat to form a low-temperature area (i.e., "cold spot") on the surface of clothing after penetration, the temperature field image is collected throughout the process by the thermal imager, avoiding subjective bias of human observation and interference from ambient light, and fundamentally solving the problem of poor repeatability of traditional visual methods. 2. The control mechanism not only determines whether cold spots appear, but also quantifies and analyzes the area and formation rate of cold spots, thereby conducting a multi-dimensional assessment of the degree of waterproofing failure, breaking through the limitations of the traditional binary judgment of "seepage / non-seepage". 3. Thermal imagers and pressure sensors ensure the accuracy and repeatability of test conditions; the detection efficiency of waterproof performance of clothing is high, and the determination of waterproof performance results is highly reliable. Attached Figure Description

[0027] Figure 1 This is an overall structural diagram of a clothing waterproof testing device according to one embodiment of this application; Figure 2 This is a front view of a clothing waterproof testing device according to an embodiment of this application; Figure 3 This is a schematic diagram of the servo motor and lifting reducer in a garment waterproof testing device according to one embodiment of this application; Figure 4 yes Figure 3 A magnified view of part A in the image; Figure 5 This is a flowchart of a method for testing the waterproofness of clothing according to one embodiment of this application.

[0028] Explanation of reference numerals in the attached figures: 1. Cabinet; 11. Motor box; 2. Test platform; 21. Water collection tray; 3. Pressure ring; 4. Water pressure loading mechanism; 41. Water tank; 42. Water pump; 43. Pressure sensor; 5. Thermal imager; 6. Control mechanism; 7. Servo motor; 8. Lifting reducer; 81. Support frame; 82. Telescopic arm; 9. Motor valve. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1 to 5 This application will be described in further detail.

[0030] In one embodiment, such as Figures 1 to 4As shown, this application discloses a garment waterproof testing device, which includes a cabinet 1, a testing platform 2, a pressure ring 3, a water pressure loading mechanism 4, a thermal imager 5, and a control mechanism 6. The cabinet 1 has a motor housing 11 located at the top. The testing platform 2 includes a vertically arranged rigid support column with an expanded neck at the top and a flat upper surface for supporting the garment sample to be tested. The testing platform 2 has several spaced-apart water outlet channels (the positions of the water outlet channels are shown in the figure). Figure 2 The dotted area of ​​the testing platform 2 (indicated by the area shown in the diagram) shows that each water outlet channel has a circular or rectangular groove structure to accommodate the water flow and ensure that the water is evenly applied to the sample surface. This embodiment illustrates the use of three circular water outlet channels; however, in practical applications, the number of water outlet channels can be designed according to the dimensions of the testing platform 2. Each branch pipe is equipped with an independent motor valve 9 to control the water pressure output of each water outlet channel. like Figures 2 to 4 As shown, the test platform 2 is also equipped with a water collection tray 21 and a filter screen located within the water collection tray 21 to recover the test water used in the garment waterproofing test. A pressure ring 3 is positioned directly above the test platform 2. The inner diameter of the pressure ring 3 is slightly smaller than the size of the area to be tested to ensure that the sample is effectively sealed and compressed. The pressure ring 3 is driven by an upper drive mechanism to achieve vertical lifting and lowering movement. In this embodiment, the drive mechanism includes a servo motor 7 and a lifting reducer 8. The servo motor 7 is installed in the motor housing 11 at the top of the cabinet 1 and is connected to the input end of the lifting reducer 8 via a coupling. The output end of the lifting reducer 8 extends downward and is fixedly connected to the pressure ring 3 via a support frame 81 and a telescopic arm 82. The top end of the support frame 81 is connected to the output end of the lifting reducer 8, and the bottom end of the support frame 81 is connected to the telescopic arm 82. Thus, the control mechanism 6 can precisely control the downward stroke and clamping force of the pressure ring 3 to ensure that the sample does not slip or leak at the edges during the test.

[0031] The water pressure loading mechanism 4 is used to apply controllable hydrostatic pressure to the upper surface of the compressed garment sample to simulate rainwater infiltration. The water pressure loading mechanism 4 includes: a water tank, a water pump 42, a water supply pipeline (not shown in the figure) connected to the water pump 42, a motor valve 9 installed on the water supply pipeline, and a pressure sensor 43 connected to the water supply pipeline. The water pump 42 is installed at the bottom inside the cabinet 1, and the water tank is installed inside the cabinet 1 and can be located on top of the water pump 42. The water pump 42 and the water tank are connected through the water supply pipeline. The outlet of the water pump 42 is connected to multiple branch pipelines (not shown in the figure) through the main water supply pipeline… (the number of branch pipelines corresponds one-to-one with the water outlet channels); the outlet end of the water supply pipeline faces the upper surface of the compressed garment sample to apply controllable water pressure. The end of each branch pipeline extends into the corresponding water outlet channel, and a motor valve 9 is installed near the outlet end of the branch pipeline for independently adjusting the water pressure output of each area; the motor valve 9 is a proportional regulating solenoid valve. Pressure sensor 43 is installed on the main water supply pipeline to monitor the actual applied water pressure in real time and feed the signal back to the control mechanism 6.

[0032] like Figures 1 to 3 As shown, the thermal imager 5 is fixedly installed on the top of the cabinet 1, directly above the pressure ring 3. The optical lens of the thermal imager 5 passes through the through hole in the center of the pressure ring 3, ensuring that the field of view is vertically aligned with the central area of ​​the test platform 2 and is unobstructed when the pressure ring 3 is pressed down. The thermal imager 5 has a frame rate of no less than 9Hz and a temperature resolution of 0.05℃, enabling it to continuously acquire temperature field image sequences of the sample surface during water pressure loading.

[0033] The control mechanism 6 is the core control unit, which can be an industrial PLC or an embedded industrial control all-in-one computer. The control mechanism 6 integrates a data processing module and a human-machine interface. The control mechanism 6 includes a control panel, a start button, and a stop button located on the front of the cabinet 1. The control panel is electrically connected to the servo motor 7, the motor valve 9, the pressure sensor 43, and the thermal imager 5 via cables. The control mechanism 6 is electrically connected to the servo motor 7, each motor valve 9, the pressure sensor 43, and the thermal imager 5 via cables.

[0034] The workflow of control mechanism 6 is as follows: The operator places the garment sample to be tested on test platform 2, ensuring that the test area covers the target water outlet channel; The test program is started by controlling the control panel (located on the front of the cabinet 1). The control mechanism 6 drives the servo motor 7 to press down the pressure ring 3, which tightly presses the garment sample to be tested onto the surface of the test platform 2. Start the water pump 42 and adjust the opening of the motor valve 9 of the corresponding branch pipeline according to the preset pressure value (such as 10kPa, 20kPa, etc., corresponding to different waterproof level standards) to gradually increase the water pressure. The pressure sensor 43 provides real-time feedback on the actual water pressure. When the preset value is reached, the control mechanism 6 automatically starts the pressure holding timer (e.g., for 5 minutes) and simultaneously triggers the thermal imager 5 to start continuously acquiring temperature field images. During the pressure holding time, the control mechanism 6 processes the thermal imaging image in real time: first, it identifies areas with temperatures below the ambient reference temperature threshold (e.g., 2°C below the ambient temperature) as candidate cold spots; then, it combines time series analysis (e.g., existing in more than 3 consecutive frames and monotonically increasing in area) to eliminate false cold spots caused by airflow disturbance, lens reflection, or electronic noise, and retains effective cold spots. The control mechanism 6 further extracts the initial appearance time, maximum cold spot area, and area growth rate per unit time of the effective cold spot, and compares them with the pre-stored multi-dimensional judgment criteria. The pre-stored multi-dimensional judgment criteria include: cold spot appearance time < 60 seconds, maximum cold spot area of ​​the effective cold spot in a single frame image during the pressure holding time is greater than 100 mm² or area growth rate > 2.0 mm² / s, which are judged as unqualified. If any indicator exceeds the limit, the control mechanism 6 displays "waterproof performance unqualified" on the control panel and records the test data; otherwise, it is judged as qualified.

[0035] The detection process of the garment waterproofing testing device in this embodiment is clearly divided into two stages in terms of time: the water pressure loading stage (i.e., the actual water pressure has not yet reached the preset pressure value) and the pressure holding and timing stage (i.e., the actual water pressure has reached and is stably maintained at the preset pressure value). In the water pressure loading stage, the water pump 42 is started, and the control mechanism 6 adjusts the opening of the motor valve 9 to gradually increase the water pressure from zero to the target set value (e.g., 20 kPa). During this process, the water flow continuously impacts the upper surface of the sample, forming a dynamic water film, causing the overall temperature of the sample to drop uniformly, approaching the supply water temperature. This cooling effect is global and non-local, and it increases with the increase of water pressure. Although the thermal imager 5 may capture local low-temperature areas in this stage, such signals are usually caused by uneven water flow distribution, sample wrinkles, specular reflection, or environmental airflow disturbances, and do not have the characteristics of persistence and area growth. They are pseudo-cold spots unrelated to waterproofing performance. Therefore, the control mechanism 6 does not activate the waterproofing performance judgment logic in this stage, but only acquires temperature field images for system baseline calibration. Once the actual water pressure fed back by pressure sensor 43 reaches the preset value, the device automatically enters the pressure holding time stage.

[0036] In a preferred embodiment, the pre-stored multidimensional judgment criteria include: (1) The initial appearance time threshold of cold spots is set to 60 seconds, 90 seconds or 180 seconds according to the target waterproof level; (2) The maximum cold spot area threshold is set to 20 mm², 50 mm² or 100 mm²; (3) The threshold for the area growth rate per unit time is set to 0.5 mm² / s, 1.0 mm² / s or 2.0 mm² / s.

[0037] The implementation principle of the waterproof clothing testing device in this application embodiment is based on the thermodynamic characterization principle of waterproof failure: when water penetrates the micropores or seam gaps of clothing fabric under pressure, the moisture will adhere to or seep into the fiber interior. Since the evaporation of water requires the absorption of latent heat of vaporization, it will cause a local temperature drop near the leakage point. This temperature drop can be captured by a high-sensitivity thermal imager 5, which manifests as a "cold spot" relative to the surrounding dry area. The earlier the cold spot appears, the larger its area, and the faster its expansion rate, the worse the waterproof performance. The waterproof clothing testing device of this invention constructs a closed-loop water pressure loading mechanism 4 through a water pump 42 and a motor valve 9, which can accurately apply hydrostatic pressure conforming to international standards (e.g., 0-100 kPa) to simulate the risk of water seepage under different intensities of rainfall or body pressure. The pressure sensor 43 provides real-time feedback to ensure loading accuracy. The servo motor 7 drives the pressure ring 3 to uniformly press the sample onto the test platform 2, effectively preventing water from flowing around the sample edge (i.e., "edge effect"), ensuring that the measured leakage originates only from the waterproof failure of the fabric body or seams, and improving the authenticity of the test results. During the pressure holding and timing phase, the thermal imager 5 continuously acquires images of the surface temperature field. The control mechanism 6 identifies candidate cold spots using image processing algorithms and uses time series analysis (such as persistence and monotonically increasing area) to eliminate false signals caused by environmental disturbances, retaining only valid cold spots that reflect actual water seepage. This is then combined with multi-dimensional thresholds for objective judgment, avoiding subjective human error.

[0038] In another embodiment, such as Figure 2 As shown, this application also discloses a method for testing the waterproofness of clothing, which is applied to a clothing waterproofness testing device as described above. The method for testing the waterproofness of clothing specifically includes the following steps: S1: Place the garment sample to be tested on the test platform and press and fix the garment sample to be tested by a pressure ring driven by a servo motor.

[0039] In this embodiment, the garment sample to be tested refers to a representative fabric sample cut from the entire garment, or a portion of the garment (such as the front chest piece or sleeve piece) can be flatly covered on the test area. The test platform is a rigid, horizontally positioned support surface. The pressure ring is a ring-shaped metal or engineering plastic component with an inner diameter slightly smaller than the size of the test area. It is used to apply uniform pressure in the vertical direction to prevent water from flowing around the edge of the sample, thus avoiding the "edge effect." The servo motor drive refers to the precise lifting and constant force clamping of the pressure ring achieved through a closed-loop controlled electric actuator.

[0040] For example, the operator first lays a 200mm x 200mm sample of a windbreaker fabric flat in the center of the testing platform, ensuring it is wrinkle-free and unstretched. Then, the operator selects "Start Test" on the control panel. The control mechanism issues a command, the servo motor starts, and drives the lifting reducer to smoothly lower the pressure ring at a speed of 5mm / s until the clamping force reaches the preset value (e.g., 300N). At this point, the sample is firmly clamped between the pressure ring and the testing platform, forming a closed pressure zone. This clamping process can be monitored in a closed loop using a displacement sensor or current feedback to ensure consistent clamping conditions for each test, thereby improving repeatability.

[0041] S2: Start the water pressure loading mechanism, apply water pressure to the upper surface of the clothing sample to be tested through the water pump and water supply pipeline, and adjust the water pressure using the motor valve installed on the water supply pipeline, while monitoring the actual water pressure in real time through the pressure sensor.

[0042] In this embodiment, the water pressure loading mechanism is a fluid control loop consisting of a water pump, a water supply pipeline, a motor valve, and a pressure sensor, used to simulate hydrostatic pressure environments of different intensities; the motor valve is a proportional solenoid valve with adjustable opening or a step-type flow control valve, which can dynamically adjust the cross-sectional area of ​​the water flow channel according to the control signal.

[0043] Specifically, after confirming that the sample is properly compressed, the control mechanism automatically starts the water pump and gradually opens the motor valve at a rate of 0.5 kPa / s, causing the water pressure to rise linearly from 0 kPa. The pressure sensor in the water supply pipeline collects pressure data every 100 ms and uploads it to the control mechanism. For example, when the target test pressure is set to 15 kPa (corresponding to a medium waterproof rating in the ISO 811 standard), the control mechanism will continuously adjust the opening of the motor valve until the pressure sensor reading stabilizes within the range of 15 ± 0.3 kPa. During this process, water is evenly sprayed from the outlet of the pipeline and the outlet cavity of the test platform onto the upper surface of the sample, forming a continuous water film to simulate the continuous action of rainwater.

[0044] S3: When the actual water pressure reaches the preset pressure value, start the pressure holding timer and enter the pressure holding timer period.

[0045] In this embodiment, the preset pressure value is the hydrostatic target value pre-input by the user based on the expected waterproof level of the sample to be tested, in kPa or mmH2O. Common values ​​include 5 kPa (500 mm), 10 kPa (1000 mm), 20 kPa (2000 mm), etc. The pressure holding time refers to a fixed-duration maintenance phase (e.g., 5 minutes) after the water pressure stabilizes and reaches the preset value, used to observe whether water leakage occurs under this constant pressure. The pressure holding time period is the only time window used for effective cold spot analysis in this embodiment.

[0046] Specifically, when the pressure sensor's three consecutive sampling values ​​all fall within a tolerance range of ±2% of the preset pressure value (e.g., 15 kPa ± 0.3 kPa), the control mechanism determines that the preset pressure value has been reached and immediately triggers two actions: first, it locks the motor valve opening to enter a pressure stabilization and fine-tuning mode (only making minor compensation to offset pipeline leakage); second, it starts an internal timer to begin a 5-minute pressure holding countdown. During this period, water pressure fluctuations are controlled within ±0.2 kPa, ensuring that the test conditions meet the international standard requirements for the "constant pressure" stage, providing a stable physical basis for subsequent cold spot analysis.

[0047] S4: During the pressure holding time, the temperature field images of the surface of the garment sample to be tested are continuously acquired by a thermal imager set above the test platform.

[0048] In this embodiment, the thermal imager is a non-contact infrared temperature measurement device that can convert the infrared radiation on the surface of an object into a two-dimensional temperature distribution image (i.e., a temperature field image), with a spatial resolution of not less than 320×240 pixels and a thermal sensitivity of ≤0.05℃; continuous acquisition refers to acquiring image sequences uninterruptedly at a fixed frame rate (such as 1Hz or higher) to form temperature evolution data in the time dimension; the temperature field image contains the temperature value corresponding to each pixel.

[0049] Specifically, the thermal imager begins operation simultaneously with the start of the pressure holding timer, continuously capturing images of the sample surface at a frequency of 2 frames per second, for a total of 600 frames (corresponding to 5 minutes). For example, in a test of a high-density polyester coated fabric, the initial few images show a uniform surface temperature distribution of 22.5 ± 0.3℃ (ambient temperature 23℃). As the pressure holding progresses, if water seepage occurs in a certain area, the temperature in that area will gradually decrease to 20.8℃, 20.1℃, 19.5℃, etc., due to the heat absorbed by water evaporation, appearing as a gradually expanding dark patch on the image. All image data is transmitted to the control mechanism's memory in real time.

[0050] S5: Based on the collected temperature field images, analyze whether cold spots appear, the area of ​​the cold spots, and the formation rate of the cold spots, and determine whether the waterproof performance of the clothing sample to be tested is qualified based on the analysis results.

[0051] In this embodiment, a cold spot refers to a low-temperature region in a temperature field image that is significantly lower in temperature than the surrounding area and exhibits a persistent and increasing trend in area. The area of ​​the cold spot refers to the actual physical area converted from the number of pixels covered by the cold spot in a single frame image after calibration, with the unit being mm²; the "cold spot formation rate" refers to the increase in the cold spot area per unit time, with the unit being mm² / s; "qualification" is a binary conclusion derived by comparing the cold spot, its area, and its formation rate with the corresponding preset threshold.

[0052] Specifically, the control mechanism first sets an environmental reference temperature threshold (e.g., 22.0℃), and marks connected regions in each frame of the image below this threshold as candidate cold spots. Then, combining time series analysis, it eliminates pseudo-signals that appear only in 1-2 frames or whose area fluctuates, retaining regions that exist for more than 5 consecutive frames and whose area monotonically increases as valid cold spots. For example, in one test, the system first identified a valid cold spot at 120 seconds, with an initial area of ​​8 mm², which expanded to 65 mm² by 300 seconds. The calculated average formation rate was (65−8) / (300−120)≈0.32 mm² / s. If the preset judgment criteria are "cold spot appearance time < 180 seconds or maximum area > 50 mm² or formation rate > 0.3 mm² / s, it is judged as unqualified," then because both the maximum area and formation rate exceed the limits, the final judgment result is "waterproof performance unqualified," and an alarm message is displayed on the control panel.

[0053] In one embodiment, a method for testing the waterproofness of clothing further includes: before testing, dividing the clothing sample to be tested into multiple fabric zones according to the clothing structure, the fabric zones including the shoulder zone, chest zone, cuff zone and hem zone.

[0054] S10: In a single test, one of the target fabric sections is placed in the pressure area of ​​the test platform and secured by a pressure ring.

[0055] In this embodiment, the target fabric partition refers to the functional areas pre-divided according to the overall structure of the garment, such as the shoulder area, chest area, cuff area, and hem area. Each partition represents the part of the garment that may be exposed to different water pressure in actual wear. The pressurized area refers to the local test range on the test platform defined by the water outlet channel and the space above it. Its size is usually a circular area with a diameter of 30-50mm. The single test emphasizes that only one partition is evaluated for waterproof performance at a time, and the entire garment needs to be clamped multiple times to complete full area coverage.

[0056] For example, the operator first performs a structural analysis of the jacket to be tested, selecting the area to be tested (e.g., "left cuff area") in the system interface. Then, the left cuff of the jacket is smoothly placed over a water outlet channel in the center of the testing platform, ensuring the cuff seam or high-stress area is centered within the channel. The control mechanism drives a servo motor to press down the pressure ring, firmly clamping the cuff sample. At this time, other untested areas (such as the shoulder and chest) are in a non-pressurized state to avoid interference. This process can be aided by a positioning template or laser pointer for alignment.

[0057] S20: During the pressure holding time, a temperature field image of the target fabric zone is acquired by a thermal imager, and cold spot information of the target fabric zone is identified based on the temperature field image. The cold spot information includes the cold spot appearance time, cold spot area and area growth rate.

[0058] In this embodiment, cold spot information is a set of dynamic parameters used to quantify water seepage behavior. The cold spot appearance time refers to the time point from the start of pressure holding to the first detection of an effective cold spot; the cold spot area refers to the actual physical area projected onto the image plane; the area growth rate reflects the speed of cold spot expansion and is a key indicator for judging the trend of waterproofing failure; all parameters are calculated based on the temperature field image sequence continuously acquired by the thermal imager during the pressure holding time stage.

[0059] Specifically, after applying a constant pressure of 15 kPa to the cuff area and entering a 5-minute pressure holding timer, the thermal imager acquires images at a frequency of 2 frames per second. The control mechanism processes the image sequence: first, it identifies connected regions with temperatures below 21.5℃ (ambient reference temperature 23℃ minus a 1.5℃ threshold); then, it uses time filtering to remove transient noise, retaining persistent regions with increasing area. For example, a valid cold spot is first confirmed at 95 seconds, with an initial area of ​​12 mm²; by 180 seconds, it has expanded to 48 mm², so the area growth rate is (48−12) / (180−95)≈0.42 mm² / s. The above three data points are recorded as the cold spot information for the cuff area for subsequent comparison.

[0060] S30: Compare the cold spot information with the preset waterproof judgment threshold corresponding to the target fabric section.

[0061] In this embodiment, the preset zone waterproof judgment threshold refers to a set of qualified / unqualified judgment boundary values ​​set separately for each fabric zone. It is usually stored in the database of the control mechanism and includes the upper limit of cold spot appearance time, the upper limit of maximum area, and the upper limit of area growth rate for that zone. The comparison refers to comparing the measured cold spot information item by item with the corresponding threshold to determine whether it exceeds the limit.

[0062] Specifically, after extracting the cold spot information from the cuff area, the control mechanism automatically calls the preset judgment thresholds for the "cuff area" (e.g., cold spot appearance time ≥ 120 seconds, maximum area ≤ 40 mm², area growth rate ≤ 0.4 mm² / s). Comparing the measured values ​​(95 seconds, 48 ​​mm², 0.42 mm² / s) with these thresholds, it is found that both the maximum area and the area growth rate exceed the thresholds. Therefore, the system determines that the cuff area has abnormal waterproofing performance, triggering the next step of the local pressure compensation test process.

[0063] In step S30, the cold spot information is compared with the preset waterproof judgment threshold corresponding to the target fabric section, including: S301: Based on the type information of the garment to be tested and the target fabric partition identifier of the current test, retrieve the corresponding preset partition waterproof judgment threshold from the pre-stored garment type-partition threshold mapping table.

[0064] In this embodiment, the type information of the garment to be tested refers to the garment category identifier entered by the user through the control panel or host computer before the test, such as "outerwear", "ski suit", "rain pants", "work raincoat", etc. Different categories correspond to different usage scenarios and waterproof performance requirements; the target fabric partition identifier refers to the area label currently being tested, such as "shoulder area" "cuff area", etc.

[0065] Specifically, the clothing type-partition threshold mapping table is a multidimensional data table pre-stored in the internal memory of the control mechanism. Its row index is clothing type, column index is fabric partition, and cell stores the set of cold spot judgment thresholds corresponding to the type-partition combination. The cold spot judgment threshold set includes cold spot appearance time threshold, maximum area threshold, and area growth rate threshold.

[0066] For example, before testing the cuff area of ​​a "professional-grade ski suit," the operator selects "ski suit" as the garment type on the touchscreen interface of the control panel and specifies the current test area as "right cuff area" when clamping the sample. Upon receiving these two parameters, the control mechanism immediately queries an internally stored mapping table. This mapping table is stored in a structured database. For example, when the garment type is ski suit, the cold spot detection threshold set for the "cuff area" includes: cold spot appearance time threshold: 150s, maximum area threshold: 35mm², and area growth rate threshold: 0.35mm² / s. The cold spot detection threshold set for the "shoulder area" includes: cold spot appearance time threshold: 180s, maximum area threshold: 30mm², and area growth rate threshold: 0.30mm² / s. The cold spot detection threshold set for the "chest area" includes: cold spot appearance time threshold: 240s, maximum area threshold: 20mm², and area growth rate threshold: 0.25mm² / s. The set of cold spot determination thresholds for the "hem area" includes: cold spot appearance time threshold: 200s, maximum area threshold: 25mm², and area growth rate threshold: 0.28mm² / s.

[0067] S302: Among them, the preset zone waterproof judgment threshold sets differentiated standards for different fabric zones, including: a relatively lenient threshold for the growth rate of cold spot area for the shoulder zone and cuff zone, and a stricter threshold for the appearance time of cold spots for the chest zone and hem zone, so as to reflect the differences in waterproof sensitivity of each zone in actual wear.

[0068] In this embodiment, the differentiated standard refers to setting non-uniform waterproof performance tolerance for different parts of the garment based on ergonomics and actual usage experience; the "shoulder area and cuff area" are allowed a certain degree of micro-leakage due to frequent friction, stretching and direct rinsing by rainwater (therefore the area growth rate threshold is slightly wider); while the "chest area and hem area" are the core torso coverage areas, and once water seepage occurs, it will directly affect wearing comfort and safety, so it is required to detect signs of leakage earlier (i.e., the cold spot appearance time threshold is stricter).

[0069] Specifically, in the above "ski suit" example, the threshold values ​​retrieved by the system clearly reflect this difference: the cuff area is allowed to have an area growth rate as high as 0.35 mm² / s (relatively lenient), because it is often rubbed against ski poles and backpacks during skiing, and the fabric is prone to fatigue, so slight leakage is acceptable; the chest area, on the other hand, requires that cold spots appear no earlier than 240 seconds (i.e. 4 minutes), and the upper limit of the area growth rate is only 0.25 mm² / s (more stringent), because the chest is the core area of ​​body temperature, and water seepage will lead to rapid hypothermia, which is extremely risky.

[0070] In a practical test, a cold spot appeared on the chest area of ​​a ski suit at 210 seconds. Although the area was only 18 mm² and the growth rate was 0.22 mm² / s (not exceeding the area-related threshold), it was still judged as unqualified because it appeared before 240 seconds. However, a cold spot appeared on the cuff area of ​​the same garment at 140 seconds, with a growth rate of 0.33 mm² / s, and was judged as qualified because both indicators did not exceed the limits.

[0071] S40: If the preset waterproofing threshold is exceeded, a local pressure compensation test is triggered on the target fabric zone: the control motor valve applies incremental water pressure to the pressurized area in a stepped manner, and cold spot response data is collected simultaneously.

[0072] In this embodiment, local pressure compensation testing is an enhanced verification method used to further confirm the true waterproof limit of suspected failure areas; stepped incremental water pressure loading refers to gradually increasing the water pressure in preset steps (such as +2kPa / step) based on the original test pressure, maintaining each step for a certain period of time; cold spot response data includes the presence or absence of cold spots under each pressure step, area change curves, and response delay time, used to construct a pressure-leakage relationship model.

[0073] For example, in response to the aforementioned anomaly in the cuff area, the system initiated a local pressure compensation test: based on the original 15 kPa, three pressure steps of 17 kPa, 19 kPa, and 21 kPa were applied sequentially, with each step held for 60 seconds. At the 17 kPa stage, the cold spot area rapidly increased from 48 mm² to 85 mm²; at 19 kPa, the cold spot had covered the entire observation area (>100 mm²); at 21 kPa, the control mechanism detected a sudden drop in temperature and an area growth rate exceeding 1.0 mm² / s. All images and pressure data were recorded synchronously, forming complete cold spot response data for accurately determining the failure threshold.

[0074] S50: Based on cold spot response data, determine whether there is local waterproof failure in the target fabric zone, and after completing the zone-by-zone test of all preset fabric zones, update the overall waterproof performance judgment result of the garment sample under test by combining the test results of each fabric zone.

[0075] In this embodiment, local waterproofing failure refers to an unacceptable water seepage behavior in a certain area under a specific water pressure. The criteria for judgment include abrupt changes, excessive rate, or area saturation in the cold spot response data. The comprehensive test results of each fabric area refer to summarizing the judgment conclusions (qualified / unqualified / failure pressure value) of all areas and using the weighted or weakest link principle to generate the final evaluation of the entire garment.

[0076] Specifically, after analyzing the cold spot response data of the cuff area, the control mechanism confirmed that it experienced rapid failure at 17 kPa, far below the design requirement of 20 kPa, and therefore marked this area as "partial waterproofing failure." Subsequently, the operators tested the shoulder area, chest area, and hem area in sequence, and the results showed that the remaining areas all passed the 20 kPa test. However, because the cuff area was a high-movement area and there was a failure, the system, based on the strategy of "failure of any critical area results in the entire garment being unqualified," updated the overall judgment from the initial "partially qualified" to "the entire garment's waterproofing performance is unqualified," and highlighted the failure pressure and cold spot evolution curve of the cuff area in the report.

[0077] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0078] In one embodiment, a computer device is provided, which may be a server. The computer device includes a processor, memory, a network interface, and a database connected via a system bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The database stores temperature field images, preset zone waterproofing thresholds, etc. The network interface communicates with external terminals via a network connection. When the computer program is executed by the processor, it implements a method for detecting waterproofing in clothing.

[0079] In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to perform the following steps: S1: Place the garment sample to be tested on the testing platform and press and fix the garment sample to be tested by a pressure ring driven by a servo motor; S2: Start the water pressure loading mechanism, apply water pressure to the upper surface of the clothing sample to be tested through the water pump and water supply pipeline, and adjust the water pressure using the motor valve installed on the water supply pipeline, while monitoring the actual water pressure in real time through the pressure sensor. S3: When the actual water pressure reaches the preset pressure value, start the pressure holding timer and enter the pressure holding timer period; S4: During the pressure holding time, the temperature field image of the surface of the clothing sample to be tested is continuously acquired by a thermal imager set above the test platform. S5: Based on the collected temperature field images, analyze whether cold spots appear, the area of ​​the cold spots, and the formation rate of the cold spots, and determine whether the waterproof performance of the clothing sample to be tested is qualified based on the analysis results.

[0080] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor: S1: Place the garment sample to be tested on the testing platform and press and fix the garment sample to be tested by a pressure ring driven by a servo motor; S2: Start the water pressure loading mechanism, apply water pressure to the upper surface of the clothing sample to be tested through the water pump and water supply pipeline, and adjust the water pressure using the motor valve installed on the water supply pipeline, while monitoring the actual water pressure in real time through the pressure sensor. S3: When the actual water pressure reaches the preset pressure value, start the pressure holding timer and enter the pressure holding timer period; S4: During the pressure holding time, the temperature field image of the surface of the clothing sample to be tested is continuously acquired by a thermal imager set above the test platform. S5: Based on the collected temperature field images, analyze whether cold spots appear, the area of ​​the cold spots, and the formation rate of the cold spots, and determine whether the waterproof performance of the clothing sample to be tested is qualified based on the analysis results.

[0081] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0082] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is used as an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0083] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A garment waterproofing testing device, characterized in that, include: Test platform (2), pressure ring (3), water pressure loading mechanism (4), thermal imager (5) and control mechanism (6); The testing platform (2) is used to hold the clothing sample to be tested; The pressure ring (3) is positioned above the test platform (2) and is driven by a drive mechanism to move vertically upwards and downwards, used to press and fix the garment sample to be tested onto the test platform (2); The water pressure loading mechanism (4) includes a water pump (42), a water supply pipeline connected to the water pump (42), a motor valve (9) installed on the water supply pipeline, and a pressure sensor (43) connected to the water supply pipeline. The water outlet of the water supply pipeline faces the upper surface of the clothing sample to be tested, so as to apply controllable water pressure. The thermal imager (5) is positioned above the test platform (2) and is used to acquire temperature field images of the surface of the garment sample to be tested during the water pressure loading process. The control mechanism (6) is electrically connected to the drive mechanism, the motor valve (9), the pressure sensor (43), and the thermal imager (5) respectively. It is used to control the opening of the motor valve (9) according to the preset pressure value to adjust the water pressure. When the actual water pressure fed back by the pressure sensor (43) reaches the preset pressure value, the pressure holding timer is started. At the same time, the thermal imager (5) is controlled to continuously collect temperature field images during the pressure holding timer. The waterproof performance is determined based on whether cold spots appear in the collected temperature field images, the area of ​​the cold spots, and the formation rate of the cold spots, so as to obtain the waterproof performance determination result of the clothing sample to be tested.

2. The garment waterproofing testing device according to claim 1, characterized in that, The control mechanism (6) is configured as follows: During the pressure holding time, the temperature field image acquired by the thermal imager (5) is processed in real time to identify areas with temperatures lower than the environmental reference temperature threshold as candidate cold spots. Combined with time series analysis, false cold spots caused by environmental disturbances or equipment noise are eliminated, and only areas that persist and show an increasing trend in area are retained as effective cold spots. The initial appearance time, maximum cold spot area, and area growth rate per unit time of the effective cold spot are compared with the preset multidimensional judgment criteria. If any indicator exceeds the corresponding threshold in the preset multidimensional judgment criteria, the waterproof performance of the garment sample to be tested is determined to be unqualified.

3. The garment waterproofing testing device according to claim 1, characterized in that, It also includes a cabinet (1), and the drive mechanism includes a servo motor (7). The cabinet (1) is provided with a motor box (11), the motor box (11) is located at the top of the cabinet (1), and the servo motor (7) located inside the motor box (11) is connected to the pressure ring (3) through a lifting reducer (8). The water pump (42) is located inside the cabinet (1); the water supply pipeline is connected between the water pump (42) and the pressurization area above the test platform (2); and the pressure sensor (43) is installed in the water supply pipeline.

4. The garment waterproofing testing device according to claim 3, characterized in that, The test platform (2) is located in the middle of the cabinet (1), and the thermal imager (5) is fixed on the top of the cabinet (1) and located above the pressure ring (3), so that the optical lens of the thermal imager (5) passes through the pressure ring (3) and faces the central area of ​​the test platform (2). The control mechanism (6) includes a control panel located on the front of the cabinet (1), which is electrically connected to the servo motor (7), the motor valve (9), the pressure sensor (43) and the thermal imager (5) via cables.

5. The garment waterproofing testing device according to claim 3, characterized in that, The test platform (2) is provided with multiple water outlet channels spaced apart in the middle. The water supply pipeline includes multiple branch pipelines. The multiple water outlet channels are set one-to-one with the multiple branch pipelines. The water outlet end of the branch pipeline is located in the water outlet channel. The motor valve (9) is located near the water outlet end of the branch pipeline.

6. A method for testing the waterproofness of clothing, characterized in that, include: The garment sample to be tested is placed on the testing platform and pressed and fixed by a pressure ring driven by a servo motor; The water pressure loading mechanism is activated, and water pressure is applied to the upper surface of the garment sample to be tested through the water pump and water supply pipeline. The water pressure is adjusted by the motor valve installed on the water supply pipeline, and the actual water pressure is monitored in real time by the pressure sensor. When the actual water pressure reaches the preset pressure value, the pressure holding timer is started, and the pressure holding timer period begins. During the pressure holding time, a thermal imager positioned above the test platform continuously acquires temperature field images of the surface of the garment sample to be tested. Based on the acquired temperature field image, the presence of cold spots, the area of ​​the cold spots, and the formation rate of the cold spots are analyzed. Based on the analysis results, it is determined whether the waterproof performance of the clothing sample under test is qualified.

7. The method for testing the waterproofness of clothing according to claim 6, characterized in that, Before testing, the garment sample to be tested is pre-divided into multiple fabric sections according to the garment structure. The fabric sections include the shoulder section, chest section, cuff section, and hem section. In a single test, one of the target fabric sections is placed in the pressure area of ​​the test platform and fixed by pressure rings; During the pressure holding time, the thermal imager acquires temperature field images of the target fabric zone, and identifies cold spot information of the target fabric zone based on the temperature field images. The cold spot information includes the cold spot appearance time, cold spot area, and area growth rate. The cold spot information is compared with the preset waterproofing threshold corresponding to the target fabric partition; If the preset waterproofing threshold is exceeded, a local pressure compensation test is triggered on the target fabric zone: the motor valve is controlled to apply incremental water pressure to the pressurized area in a stepped manner, and cold spot response data is collected simultaneously. Based on the cold spot response data, it is determined whether there is a local waterproof failure in the target fabric section. After completing the zone-by-zone test of all preset fabric sections, the overall waterproof performance judgment result of the garment sample under test is updated by combining the test results of each fabric section.

8. The method for testing the waterproofness of clothing according to claim 6, characterized in that, The step of comparing the cold spot information with the preset waterproofing threshold corresponding to the target fabric section includes: Based on the type information of the garment to be tested and the target fabric partition identifier of the current test, the corresponding preset partition waterproof judgment threshold is retrieved from the pre-stored garment type-partition threshold mapping table. The preset waterproofing threshold for different fabric zones is designed with differentiated standards, including: a relatively lenient threshold for the growth rate of cold spot area for the shoulder and cuff areas, and a stricter threshold for the appearance time of cold spots for the chest and hem areas, in order to reflect the differences in waterproofing sensitivity of each zone in actual wear.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the waterproof testing method for clothing as described in any one of claims 6 to 8.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the waterproof testing method for clothing as described in any one of claims 6 to 8.

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