A temperature characteristic detection device and a textile temperature detection method

Abstract

The present application belongs to the technical field of textiles, and particularly relates to a temperature characteristic detection device and a textile temperature detection method. The detection device comprises a detection cavity, a reference assembly and at least one detection assembly arranged in the detection cavity. The design parameters of the reference assembly and the detection assembly are completely identical. Each assembly comprises a probe and a heating body. The probe and the heating body on each assembly are closely attached to each other and have the same attachment mode. The probe and the heating body are both of low heat capacity and low heat inertia. The device is used to detect the temperature of a reference sample and a sample to be detected, so as to obtain parameters such as drying time and temperature. The device has high heat energy utilization rate, high detection sensitivity and high precision. The method does not need to detect a standard environment, has a short detection time, and can obtain the real wearing feeling of a sample in a wearing environment.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of textiles, and particularly relates to a temperature characteristic detection device and a textile temperature detection method. BACKGROUND

[0002] The basic properties of clothing are warmth and shielding. However, with the improvement of human life quality, clothing is endowed with functional properties such as ice feeling (opposite to warmth), moisture absorption, quick drying, radiation resistance and the like. Since the detection means / detection standard and the detected object are in a demand and demanded relationship, the detection means and the detection standard must inevitably lag behind these functional properties. At present, among these functional properties, there are still no special, unified detection standards, detection methods and detection instruments, so that the indicators of functional properties cannot be quantified, and in practical operation, the advantages and disadvantages of functional indicators are often obtained by artificial experience and other means, which is obviously neither scientific nor conducive to the optimization of the design process, the quality control of the production process, the selection of the procurement process, and the selling point display of the sales process. More importantly, since the indicators of functional properties cannot be quantified, there is a lack of strong data evidence between competitive products, causing market chaos, and disordered competition between inferior and good coins, which is not conducive to technological progress.

[0003] In recent years, for summer clothing, spinning fibers and textile fabrics have developed cool fibers and clothing, and for winter clothing, they have developed thermal fibers. At the same time, according to the two extreme temperature seasons of winter and summer, they have developed moisture absorption, quick drying and low moisture regain and high moisture discharge characteristics for applicable fibers and clothing. That is, spinning fibers and textile fabrics have developed in two directions in terms of temperature characteristics. Therefore, the detection of the temperature characteristic indicators of spinning fibers and textile fabrics has become a market demand. However, the traditional detection technology still stays at the level guided by the national standard GB / T11048, and the corresponding detection equipment is mainly the equipment for detecting thermal resistance and thermal conductivity. The related detection equipment commonly used for detecting spinning fibers and fabrics is provided with a heating body with large mass, heat capacity and thermal inertia, and the heating body transmits heat to the sample to be detected, and the required indicator parameters are obtained by detecting the heat transfer capacity.

[0004] The defects existing in actual detection are as follows:

[0005] 1) The heating body of the detection equipment has large mass, heat capacity and thermal inertia, especially when detecting light and thin samples, the heat capacity and thermal inertia of the heating body itself greatly cover the thermal characteristics of the sample, resulting in low precision of the detection result and poor consistency of repeated detection.

[0006] 2) Need for standard environment: due to the detection method and detection standard lagging behind the demand, the prior art needs to complete the test in the constant temperature and humidity environment of the standard laboratory, and the detection result is an absolute value, which necessarily needs a standard and unified detection environment, and also determines that the general detection means is difficult to meet the detection conditions, that is, it is difficult to popularize the detection.

[0007] 3) The detection result does not have practicality: the current detection technology needs to place the sample to be detected in a standard environment for several hours before testing, so that the sample and the environment reach equilibrium; this detection method / standard fundamentally eliminates the influence of environmental temperature and humidity on the temperature characteristics of the sample, and only the "standard" parameter of the sample is detected; but clothes and accessories are not used in a standard environment, and the functional index of the sample is also related to the moisture regain, drying time and other parameters of the adjusted raw materials or manufacturing process, so the sample to be detected after equilibrium in the standard environment for several hours will inevitably lose its real characteristics in the natural environment; therefore, the index detected by the current detection method and standard cannot truly reflect the wearing experience of the sample to be detected.

[0008] 4) Long detection time: the sample needs to be placed in a standard environment for a sufficient time to achieve sufficient balance between the sample and the standard environment, and the balance time is generally not less than 30 minutes.

[0009] 5) Need for professional personnel and equipment: professional operators need to use expensive laboratory-level test equipment to obtain the detection result;

[0010] 6) High detection cost: the cost of detection equipment depreciation, professional personnel and laboratory fees, which are destined to require high investment, or general users lack the construction capacity, and can only pay high detection fees by entrusting detection;

[0011] 7) The detection equipment is bulky and can only be fixedly installed in a laboratory, and cannot be used mobile;

[0012] 8) The detection result is presented in the form of thermal resistance, thermal conductivity and other indexes, which are too professional and not conducive to the understanding, reference use and comparison of non-professional people;

[0013] At present, in the aspects of product research and development, production process optimization and adjustment, quality sampling in batch production, and finished product performance detection, it is a rigid demand to obtain the result immediately; in the process of comparative purchase of textile fibers and fabrics, especially in the selection of similar products, and in the consistency confirmation when sending samples and supplying a large quantity, it is also a rigid demand to obtain the result immediately; and when consumers select and purchase, they can obtain quantitative data of performance indexes in a timely manner, which can provide strong data support for "good coins", avoid disordered price competition, stabilize the market order, and support the investment in technological innovation.

[0014] Now, there is an urgent need for a method and device that can quickly and easily detect the temperature characteristics of a sample in the current environment on site. SUMMARY

[0015] In view of the limitations of the conventional technology in real production and market demand, in order to solve the existing technical problems, the present application provides a temperature characteristic detection device and a textile temperature detection method. The detection device has the advantages of simple structure, light weight, easy installation, disassembly and maintenance, and easy movement. The detection method has the advantages of fast testing speed, instant detection, instant result, improved effect, time saving, error elimination, more accurate data, high practicality, and wide application.

[0016] According to the actual needs, the present application provides a temperature characteristic detection device and a textile temperature detection method, which solves the current limitations of detecting textiles or fabrics and provides a practical and convenient solution. The technical scheme of the present application is as follows:

[0017] A temperature characteristic detection device comprises a detection cavity, a reference assembly and at least one detection assembly arranged in the detection cavity, the design parameters of the reference assembly and the detection assembly are completely the same, each assembly comprises a probe and a heating body, and the probe and the heating body on each assembly are closely attached to each other and have the same attachment mode; the probe and the heating body are both low-heat-capacity and low-heat-inertia types.

[0018] In the present application, the design values of the structure size, material, electrical parameters, etc. (basic parameters) of all heating bodies and probes are consistent, the heating bodies and probes are both low-heat-capacity and low-heat-inertia types, and the relative positions and mounting modes of the heating bodies and probes on the reference assembly and the detection assembly are consistent, i.e., the reference assembly and the detection assembly are completely the same in design. In the present application, the structure sizes of the probes and heating bodies are consistent, which can ensure that their surface areas are consistent, and thus the surface areas of the samples covered by them are consistent, i.e., the effective areas of the samples are consistent; the basic parameters are consistent, which can ensure that the basic values (when not affected by the covered samples) of the reference assembly and the detection assemblies are consistent during the detection process. Therefore:

[0019] ① After covering the samples, the temperature difference between the reference assembly and the detection assemblies can represent the characteristic difference between the samples tested by the reference assembly and the detection assemblies;

[0020] ② If the sample tested by the reference assembly has a small change value in characteristics with the environment, then by subtracting the characteristic values of the samples tested by the reference assembly and the detection assemblies, i.e., the basic values are offset by each other, the influence of the reference assembly and the detection assemblies on the test results can be eliminated, and the "effective value" of the sample tested by each detection assembly can be obtained;

[0021] If the sample tested by the reference assembly has known characteristics, the difference in characteristics of the sample tested by each detection assembly relative to the known sample can be obtained;

[0022] If the sample tested by the reference assembly has unknown characteristics, the difference in characteristics between the sample tested by the reference assembly and the sample tested by the detection assembly can be obtained to realize the comparison of characteristics between the samples.

[0023] Preferably, a measurement and control system electrically connected to the probes and the heating bodies is further included, and the measurement and control system is arranged outside the detection cavity; the heating bodies on the reference assembly and the heating bodies on the detection assembly are connected in series and then connected to the measurement and control system to ensure that the currents of the probes are consistent or the voltages of the probes are consistent under the same heating timing.

[0024] In order to ensure the consistency of the heating power of all the heating bodies, a power compensation difference mechanism can be arranged, which includes a hardware compensation mechanism and a software compensation mechanism.

[0025] The hardware compensation mechanism: a resistive device that can be adjusted or replaced in parallel or in series or a device that works in a resistive state is arranged to adjust the power of all the heating bodies to be consistent.

[0026] The software compensation mechanism: through a calibration operation, a power difference value is input to the measurement and control system, and the measurement and control system calculates the influence degree of the difference on the temperature of the heating body through software and then compensates the detection result through software.

[0027] Although the heating bodies of the reference assembly and the detection assemblies are consistent in design parameters, consistency differences are inevitable in the manufacturing process. The differences will become an unknown error part in the detection result and affect the accuracy of the detection result, especially when the characteristic differences of the samples tested by the assemblies are small, the error may even cover the "effective value" in the detection result. The scheme can greatly improve the accuracy of the detection result by compensating the above consistency differences through a compensation circuit or software.

[0028] Preferably, a cover is arranged on the top of the detection cavity, and the cover and the bottom of the detection cavity are both provided with ventilation grids of the same size and relative position at positions corresponding to the reference assembly and the detection assemblies; the same size and number of ventilation grids are arranged on the cover and the bottom of the detection cavity relative to the positions of the probes to make the probes and the samples covered thereby in a natural environment and have the same air flow; the probes on the detection assembly and the probes on the reference assembly are provided with the same air flow mechanism to make the probes in the same air flow, which on the one hand provides a detection environment close to a natural environment for the detection process and on the other hand ensures the consistency of the environment of the probes and provides a possibility to obtain a detection result closer to a wearing environment.

[0029] Preferably, the edge of the heating body is provided with a mounting claw, the mounting claw is provided with a mounting hole, and the detection cavity is provided with a fixing seat matched with the mounting hole. Further preferably, the mounting claw is made of polyimide material and is integrally formed with the heating body.

[0030] In the present application, the connection mode between each component and the detection cavity is as heat-insulating as possible, so as to prevent the heat of each component from being conducted to the detection cavity through the mounting structure as much as possible, thereby improving the effective utilization rate of heat, the detection precision and the accuracy.

[0031] Preferably, the heating body is a polyimide film heater, and the probe is a thin-film temperature sensor.

[0032] Since the polyimide material has the characteristics of low thermal conductivity, high temperature resistance and low moisture regain, and the thickness of the film material can be several tenths of millimeters, it is suitable to be a heater carrier to form the heating body. At the same time, the thin-film temperature sensor has good adhesion with the heating body, and has high detection accuracy and sensitivity. The combination of the thin-film heating body and the thin-film temperature sensor can greatly reduce the mass of the heating body + temperature sensor (probe), reduce the heat capacity and heat inertia, reduce the basic parameters of the reference component and each detection component, so that more heat generated by heating is applied to the detection / reference sample, thereby improving the heat utilization rate and greatly improving the proportion of the heat dissipation amount of the sample detected by each component in the whole heat dissipation mechanism, i.e., the detection sensitivity and the detection precision are improved.

[0033] A textile temperature detection method, which utilizes the above-mentioned temperature characteristic detection device to detect the temperature of the textile, and the specific method comprises the following steps:

[0034] Balancing: the reference sample and the sample to be detected are respectively wrapped outside the reference component and the detection component, and balanced for a period of time until the change rate of the temperature detected by the probe of the reference component and the probe of the detection component with respect to time is lower than a set value;

[0035] Heating: the heating of each heating body is started, and the temperature values of the probe on the detection component and the probe on the reference component during the heating process are recorded in real time;

[0036] Cooling: the heating of each heating body is stopped, and the temperature values of the probe on the detection component and the probe on the reference component during the cooling process are recorded in real time;

[0037] Time division: according to the change rate of the temperature difference between the probe on the detection component and the probe on the reference component with respect to time, the heating and cooling processes are divided into an initial stage, an evaporation stage and a dry stage;

[0038] Data analysis: according to the length of each period, real-time temperature and temperature difference, the temperature characteristic parameters of the sample to be detected relative to the reference sample are calculated, including drying speed, absolute natural temperature coefficient, relative natural temperature coefficient, absolute dry temperature coefficient and relative dry temperature coefficient.

[0039] Preferably, the time period is divided as follows:

[0040] The real-time temperature difference between the probe on the detection assembly and the probe on the reference assembly from 0 or close to 0 to the period when the temperature difference exceeds the set value A is the initial stage.

[0041] From the end time of the initial stage to the time when the absolute value of the rate of change of the real-time temperature difference between the probe on the detection assembly and the probe on the reference assembly with time reaches a maximum and then falls to less than the set value B, it is the evaporation stage, and the length of time used is the drying time.

[0042] From the end time of the evaporation stage to the time when the absolute value of the rate of change of the temperature difference between the probe on the detection assembly and the probe on the reference assembly with time is less than the set value B and remains less than the set value B for a long drying time, it is the dry stage. If the rate of change is ≥ the set value B, it is re-timed after the change is less than the set value B.

[0043] Preferably, the absolute natural temperature coefficient is the ratio of the temperature difference of the probe on the detection assembly at the beginning and end of the evaporation stage to the drying time.

[0044] The relative natural temperature coefficient is the ratio of the difference in temperature difference between the probe on the detection assembly and the probe on the reference assembly at the beginning and end of the evaporation stage to the drying time.

[0045] The absolute dry temperature coefficient is the ratio of the temperature difference of the probe on the detection assembly at the beginning and end of the dry stage to the drying time.

[0046] The relative dry temperature coefficient is the ratio of the difference in temperature difference between the probe on the detection assembly and the probe on the reference assembly at the beginning and end of the dry stage to the drying time.

[0047] Preferably, the control mode used in the detection method is constant temperature control mode or constant power control mode.

[0048] The constant temperature control mode: the temperature of the probe on the reference assembly is taken as the reference control object, the temperature of the probe on the reference assembly at the beginning of detection is taken as the basic temperature value, the heating bodies on the reference assembly and the detection assembly are controlled with the same power and the same sequence to heat, and the set temperature of the probe on the reference assembly is made equal to the basic temperature value + ΔT.

[0049] In the constant temperature control mode, the temperature of the probe on the reference assembly is the control object, and the probe on the reference assembly is forced to control to a set temperature value (base value + ΔT); but the heating power of the heating body on the other assemblies "follows" the heating body on the reference assembly. Since the physicochemical properties and electrical properties of each assembly are consistent, in this control mode, the temperature of the reference assembly is forced to be constant, but the temperature of the other assemblies is in a free state, and the temperature is determined by the sample wrapped therein. That is, when each assembly is not wrapped with a sample, the temperature parameters of each assembly should be consistent; after wrapping the sample, if the temperature characteristics of the sample are the same, the temperature parameters of each assembly should also be consistent, and if the temperature characteristics of the sample are different, the temperature parameters of each assembly will also show differences. This scheme obtains the temperature characteristic difference between the detection sample and the reference sample by detecting the difference.

[0050] The constant power control mode: taking the heating power of the heating body on the reference assembly as the reference control object, controlling the heating body on the reference assembly and the heating body on the detection assembly with the same power and the same sequence to make the heating power of the heating body on the reference assembly constant.

[0051] In the constant power control mode, the heating power of the heating body on the reference assembly is the control object and is forced to be constant, and the heating power of the heating body on the other assemblies "follows" the heating body on the reference assembly. Similarly, since the physicochemical properties and electrical properties of each assembly are consistent, the temperature values of each assembly during the detection process, i.e., the temperature characteristics of the samples wrapped by each assembly, and the difference between the temperature values represent the temperature characteristic difference between the samples.

[0052] Further preferably, in the constant temperature control mode, the temperature of the reference probe is controlled to maintain a certain constant value, which is the average body temperature of the wearer. Since different temperature environments have certain effects on the evaporation speed and heat conduction performance of the sample, the present application can set the wearer's body temperature as the set temperature to simulate the real temperature environment of the sample during wearing, so as to obtain the real characteristic parameters of the sample under the wearing temperature environment, which has more reliable guiding significance for the manufacture, selection, comparison and other aspects of the sample.

[0053] More preferably, a heating body power compensation mechanism is adopted to ensure that the heating powers of the heating bodies are consistent, to ensure the measurement and control accuracy, and to ensure the accuracy and precision of the results. The compensation mechanism can adopt a hardware compensation mechanism and a software compensation mechanism.

[0054] Preferably, the reference sample is a polyimide material or a standard air layer.

[0055] The standard air layer: a sealed cavity composed of a polyimide material, the reference assembly is sealed therein, and standard air is injected or vacuumed to a specified negative pressure value.

[0056] Since the main features of the polyimide material are: ① it is one of the few heat-resistant fibers / fabrics with a thermal resistance close to air; ② its moisture regain is at the lowest level among current spinnable fibers / fabrics; ③ it is resistant to high temperatures. That is, in addition to the material itself having excellent high-temperature resistance, it is suitable as a substrate for a heater, and its good heat retention performance (thermal conductivity close to air) is suitable for its optimal heat retention performance in spinnable materials, and its lowest moisture regain (least affected by humidity), making it the most suitable reference sample with "benchmark" characteristics.

[0057] Standard air or a designated vacuum environment (e.g., -10 KPa) is more stable and has more "benchmark" significance for thermal conductivity performance relative to solid references.

[0058] With "benchmark" as a reference, the present application mainly detects in relative values (relative to the temperature characteristic values of the "benchmark"), which can effectively solve many defects of the current technology, improve the practicality of the technical solution of the present application, and overcome the problems of having to detect in a laboratory standard environment, placing the sample in a standard environment for several hours, and having to use professional personnel and equipment for detection.

[0059] In the present application, the detection assembly and the reference assembly are connected to the detection cavity in a heat-insulating mode as much as possible, which can prevent heat conduction to the detection cavity as much as possible, making the effective utilization rate of heat higher and improving the detection precision and accuracy.

[0060] The present application has the following advantages:

[0061] 1) The detection device is lightweight and has small temperature inertia, which reduces the consumption and buffering of heat to a very low level, thereby maximizing the proportion of heat acting on the sample, improving the temperature response speed of the detection device, and improving the sensitivity, the probe and heating body have small mass, small heat capacity and small temperature inertia, high heat energy utilization rate, high detection sensitivity and high precision;

[0062] 2) The analog detection method is created, which uses the same test environment, the same detection assembly and reference assembly, and the reference sample with "benchmark" characteristics to implement differential testing (such as the temperature difference between the two probes), which can effectively "filter out" the influence of environmental factors on the test results, and the test process does not need to be carried out in a standard environment;

[0063] 3) The structure is simple and lightweight, and can be portable, which is conducive to detection in any field environment, achieves on-site detection and on-site results, meets many application scenarios, and has a better use experience than the current laboratory test mode;

[0064] 4) There is no need to detect a standard environment, and the sample does not need to be placed in a standard environment for several hours before detection, which saves time and improves efficiency;

[0065] 5) Since the test is conducted in a natural environment, the test results characterize the performance of the sample under natural wearing conditions and can reflect the real wearing experience in the wearing environment.

[0066] 4) It can perform real-time detection with short detection time, making it particularly suitable for application scenarios where production processes can be adjusted in real time on-site and test comparison results can be obtained on-site.

[0067] 5) It can determine whether the sample is more inclined to natural temperature, natural temperature, or dry temperature in a dry environment by measuring the absolute natural temperature coefficient, relative natural temperature coefficient, absolute dry temperature coefficient, and relative dry temperature coefficient of the sample in a dry environment.

[0068] 6) With a configuration of one reference component and multiple detection components, multiple samples can be tested simultaneously and at one time. Since the detection environment, time and process are completely consistent, compared with batch or time-sharing detection, the consistency of the detection results is better, the comparability is better, and the detection efficiency is higher. Attached Figure Description

[0069] Figure 1 This is a schematic diagram of the temperature characteristic detection device of the present invention;

[0070] In the diagram, 1 is the detection chamber, 2 is the mounting base, 3 is the probe, 4 is the mounting claw, 5 is the heating element, 6 is the cover, 7 is the ventilation grille, 8 is the heating element lead wire, and 9 is the sensor lead wire. Detailed Implementation

[0071] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection claimed in this application.

[0072] like Figure 1 As shown, a temperature characteristic detection device includes a detection chamber 1, within which a reference component and at least one detection component are disposed. The design parameters of the reference component and the detection component are identical. Each component includes a probe 3 and a heating element 5, and the probe 3 and heating element 5 on each component are tightly fitted together in the same way. The probe 3 and heating element 5 are both of low heat capacity and low thermal inertia type. The reference component includes a reference probe 3 and a heating element 5. The detection component includes a detection probe 3 and a heating element 5.

[0073] All the heating bodies and probes in the present application have consistent design values of structure size, material, electrical parameters (basic parameters), and the heating bodies and probes are of low heat capacity and low heat inertia type, and the relative positions and mounting modes of the heating bodies and probes on the reference assembly and detection assemblies are consistent, i.e., the reference assembly and detection assemblies are completely identical in design. In the present application, the structure sizes of the probes and heating bodies are consistent, which can ensure the consistency of their surface areas, and further ensure the consistency of the surface areas of the samples covered thereby, i.e., the effective areas of the samples are consistent; the consistency of the basic parameters can ensure the consistency of the basic values (when not affected by the covered samples) of the reference assembly and detection assemblies during detection.

[0074] In another embodiment, the probes 3 are bonded on the heating bodies 5, and a measurement and control system (not shown in the figure) electrically connected with the probes 3 and heating bodies 5 is arranged in a control panel with human-machine interaction, and the measurement and control system is arranged outside the detection cavity 1; the heating bodies 5 on the reference assembly and the heating bodies 5 on the detection assemblies are connected in series and then connected with the measurement and control system, so as to ensure the consistency of the currents or voltages of the probes under the same heating sequence.

[0075] In order to ensure the consistency of the heating powers of all the heating bodies, a power compensation difference mechanism can be arranged, which includes a hardware compensation mechanism and a software compensation mechanism.

[0076] The hardware compensation mechanism: parallel or series adjustable or replaceable resistive devices, or devices working in a resistive state, are arranged to adjust the power of all the heating bodies to be consistent.

[0077] The software compensation mechanism: through calibration operation, a power difference value is input to the measurement and control system, and the measurement and control system calculates the influence degree of the difference on the temperature of the heating body by software, and then compensates the detection result by software.

[0078] Although the heating bodies of the reference assembly and detection assemblies are consistent in design parameters, it is difficult to avoid consistency differences in the manufacturing process. The differences will become an unknown error part of the detection result, which affects the accuracy of the detection result, especially when the characteristics of the samples detected by the assemblies are small, the error may even cover the "effective value" in the detection result. The scheme can greatly improve the accuracy of the detection result by compensating the above consistency differences through a compensation circuit or software.

[0079] In another embodiment, a cover 6 is arranged on the top of the detection cavity 1, and ventilation grates 7 are arranged on the cover 6 and the bottom of the detection cavity 1 at positions corresponding to the positions of the reference assembly and the detection assemblies; ventilation grates 7 of the same size and number are arranged on the cover 6 and the bottom of the detection cavity 1 relative to the positions of the probes 3, so that the probes 3 and the samples covered thereby are in a natural environment and have the same air flow; the ventilation grates 7 provide the detection cavity 1 with air convection of fixed path and direction, which is conducive to providing the samples with the wearing state of the environment state and preventing air flow unevenness, disorder and the like from causing air flow difference between the two probes 3; the probes 3 on the detection assemblies and the probes 3 on the reference assembly are provided with the same air flow mechanism, so that the probes 3 are in the same air flow, which on the one hand provides the detection process with a detection environment close to the natural environment and on the other hand ensures consistency of the environment of the probes 3, thereby providing a possibility of obtaining a detection result close to the wearing environment.

[0080] In another embodiment, mounting claws 4 are arranged on the edges of the heating body 5, mounting holes are arranged on the mounting claws 4, and fixing seats 2 adapted to the mounting holes are arranged on the side walls of the detection cavity 1, so that the heating body 5 is mounted in the detection cavity 1; the mounting claws 4 are relatively slender, which can prevent heat of the heating body 5 from being conducted to the detection cavity 1 through the mounting claws 4 as much as possible, improve effective utilization rate of the heat of the electric heating body 5, and thus improve detection precision; the mounting claws 4 are made of polyimide material, and the mounting claws 4 and the heating body 5 are integrally formed.

[0081] In the present application, a heat insulation connection mode is arranged between each assembly and the detection cavity, which can prevent heat of each assembly from being conducted to the detection cavity through the mounting structure as much as possible, so that the effective utilization rate of the heat is higher, and detection precision and accuracy are improved.

[0082] In another embodiment, the heating body 5 is a polyimide film heater, the probe 3 is a thin film temperature sensor, and the heating body 5 is also a polyimide film heater. The polyimide film heater uses a high-temperature-resistant and low-water-absorption polyimide film as a substrate, uniformly prints an electric heating circuit on the substrate, and is electrically connected to the measurement and control system (not shown) through the heating body 5 lead-out wire 8. This structure makes the heating body 5 light in mass, small in heat capacity, and small in thermal inertia, which is beneficial to applying as much heat as possible to the reference sample and the sample to be measured. The probe 3 is a thin film temperature sensor, which has a light and thin structure with a sensing core fixed on a polyimide film substrate. The probe 3 is light in mass, small in heat capacity, and small in thermal inertia. The sensing core is electrically connected to the measurement and control system (not shown) through the sensor lead-out wire 9. The structure, size, material, and electrical parameters of all probes 3 are consistent. The structure, size, material, and electrical parameters of all probes 3 are consistent. The probe 3 and the heating body 5 are closely attached to each other one by one to form an assembly. The relative positions and mounting methods of the probe 3 and the heating body 5 in each assembly are the same, forming assemblies that are completely the same. The assemblies are divided into reference assemblies and detection assemblies, which are completely the same, and are more beneficial to eliminating the influence and errors during detection, ensuring that the detection data is more real and accurate.

[0083] Due to the characteristics of low thermal conductivity, high temperature resistance, and low moisture regain of polyimide material, and the thickness of the polyimide film material can be several tenths of millimeters, it is suitable to be used as a heater carrier to form a heating body. At the same time, the thin film temperature sensor has good adhesion with the heating body, and is accurate and sensitive in detection. The combination of the thin film heating body and the thin film temperature sensor can greatly reduce the mass of the heating body + temperature sensor, reduce the heat capacity and thermal inertia, reduce the basic parameters of the reference assembly and each detection assembly, and make the heat generated by heating be applied more to the detection / reference sample, improve the heat utilization rate, and greatly improve the proportion of the heat dissipation amount of each assembly in the entire heat dissipation mechanism, i.e., improve the detection sensitivity and detection accuracy.

[0084] In the specific detection method using the detection device provided by the present application, the polyimide fabric is used as a reference sample, and the sample to be measured is covered on the reference assembly and the detection assembly in the same way. After being still for several minutes, the influence of the covering operation on the sample and the probe 3 is dissipated, and then the cover 6 is buckled to the detection cavity 1. The human-computer interaction control panel starts the detection.

[0085] The present application takes the fabric made of polyimide fiber as the reference sample, and the substrate of the heating body 5 and the temperature sensor is also made of polyimide material. The main features of the material are: ① it is one of the few spinnable fibers / fabrics with thermal resistance close to air; ② the moisture regain is at the lowest level among the current spinnable fibers / fabrics; ③ high temperature resistance. That is, in addition to the material itself having excellent high temperature resistance, being suitable for being used as the substrate of the heater, its good heat preservation performance (very low thermal conductivity) is suitable for preventing the heat energy of the heating body 5 from being conducted outward through the mounting claw 4; again, its optimal heat preservation performance in the spinning material and the lowest moisture regain make it the most heat-preserving, least affected by humidity, and most suitable as a "benchmark" reference sample.

[0086] The temperature characteristic detection device provided by the present application creates a construction scheme of a light, small temperature inertia reference assembly and detection assembly, so that the heat consumption and buffering of the assembly itself is reduced to a very low level, thereby realizing as high a proportion of heat acting on the sample as possible, improving the temperature response speed of the detection device, and improving the sensitivity; an analog detection mode is created, two detection assemblies in the same test environment and a reference sample with "benchmark" characteristics are used to implement differential comparison tests (such as the temperature difference between the two probes 3), which can effectively "filter out" the influence of environmental factors on the test results, and the test process does not need to be carried out in a standard environment; since the test is carried out in a natural environment, the test results represent the performance of the sample under natural wearing conditions, and can reflect the real wearing feeling; the structure is simple and light, and is portable, which is conducive to detection in any field environment, achieves on-site detection and on-site results, meets the numerous application scenarios listed in the background art, and the use experience is much better than the current laboratory test mode; with the configuration of 1 reference assembly + multiple detection assemblies, multiple samples to be tested can be detected at the same time and at one time, and since the detection environment, time, and process are completely consistent, compared with batch and time detection, the consistency of the detection results is better, the comparability is better, and the detection efficiency is higher.

[0087] The temperature characteristic detection device is used to detect the temperature characteristics of textiles, and the specific method is as follows.

[0088] Example 1

[0089] A textile temperature detection method, the specific steps are as follows:

[0090] After the device is installed, the test is started, and the two heating bodies 5 provide the same timing and the same power heating mode under the control of the measurement and control system, and the real-time temperature values of the two probes 3 are recorded at the same time.

[0091] Because the reference assembly and the reference sample (polyimide material) coated thereon have the optimal high insulation and low moisture absorption performance, the reference probe 3 is hardly affected by the water content of the reference sample during the test, and has a good "benchmark" effect.

[0092] The specific operation is as follows:

[0093] Balancing: The reference assembly and the detection assembly are respectively coated in the reference sample and the sample to be detected, and balanced for a period of time until the change rate of the temperature detected by the probe 3 of the reference assembly and the detection assembly with time is lower than a set value;

[0094] Heating: Start heating of each heating body 5, and record the temperature values of the probe 3 on the detection assembly and the probe 3 on the reference assembly in real time during the temperature rising process;

[0095] Cooling: Stop heating of each heating body 5, and record the temperature values of the probe 3 on the detection assembly and the probe 3 on the reference assembly in real time during the temperature falling process;

[0096] Time division: According to the change rate of the temperature difference between the probe 3 on the detection assembly and the probe 3 on the reference assembly with time, the temperature rising and falling processes are divided into an initial stage, an evaporation stage and a dry stage;

[0097] Data analysis: According to the time length, real-time temperature and temperature difference of each period, the temperature characteristic parameters of the sample to be detected relative to the reference sample are calculated, including drying speed, absolute natural temperature coefficient, relative natural temperature coefficient, absolute dryness temperature coefficient and relative dryness temperature coefficient;

[0098] The absolute natural temperature coefficient is the ratio of the temperature difference of the probe 3 on the detection assembly at the beginning and end of the evaporation stage to the drying time;

[0099] The relative natural temperature coefficient is the ratio of the difference between the temperature difference of the probe 3 on the detection assembly and the temperature difference of the probe 3 on the reference assembly at the beginning and end of the evaporation stage to the drying time;

[0100] The absolute dryness temperature coefficient is the ratio of the temperature difference of the probe 3 on the detection assembly at the beginning and end of the dry stage to the drying time;

[0101] The relative dryness temperature coefficient is the ratio of the difference between the temperature difference of the probe 3 on the detection assembly and the temperature difference of the probe 3 on the reference assembly at the beginning and end of the dry stage to the drying time.

[0102] Example 2

[0103] A method for detecting the temperature of a textile product:

[0104] The specific operation of Example 2 is as follows:

[0105] (1) Equilibrium: the reference sample is coated on the reference assembly, the sample to be detected is coated on the detection assembly, the cover 6 is buckled, the detection is started through the man-machine interaction control panel (not shown), and the temperature detected by the probes 3 of the reference assembly and the detection assembly is kept for a period of time (for several minutes) until the change rate of the temperature detected by the probes 3 of the reference assembly and the detection assembly with time is lower than a set value;

[0106] (2) Initial stage: the constant temperature control mode of the reference probe 3 is executed (the temperature of the probe 3 on the reference assembly is the reference control object, the temperature of the probe 2 on the reference assembly at the starting detection time is the basic temperature value, the heating bodies on each of the reference assembly and the detection assembly are controlled by the same power and the same sequence, so that the set temperature of the probe 3 on the reference assembly is equal to the basic temperature value + ΔT), the heating body 5 starts to heat, and the temperature values of the probe 3 (detection probe 3) on the detection assembly and the probe 3 (reference probe 3) on the reference assembly are recorded in real time during the heating process, and the real-time temperature difference between the probe 3 on the detection assembly and the probe 3 on the reference assembly is terminated from 0 or close to 0 to when the temperature difference exceeds a set value A, and the main heating power in this stage is consumed by the heating body 5 and the temperature sensor closely attached thereto;

[0107] (3) Evaporation stage: from the end time of the initial stage to the time when the absolute value of the change rate of the real-time temperature difference between the probe 3 on the detection assembly and the probe 3 on the reference assembly with time appears a maximum value and then falls to less than a set value B (the termination condition is that the absolute value of the change rate of time first increases, then decreases, and then appears to be less than the set value B), the time length used is the drying time; the main feature of this stage is that the temperature difference between the two probes 3 is in an unstable state, and the heating power of the heating body 5 on the detection assembly is used to evaporate the moisture in the sample to be detected, and the drying time represents the binding ability of the sample to be detected to water molecules; the ratio of the temperature difference of the detection probe 3 at the beginning and the end of this stage to the drying time represents the absolute temperature retention performance of the sample to be detected in the natural environment (the temperature conduction ability), that is, the absolute natural temperature coefficient, which can determine whether the sample to be detected is inclined to natural temperature sensing or natural cooling; the difference between the temperature difference of the two probes 3 at the beginning and the end of this stage and the ratio of the drying time represent the relative temperature retention performance of the sample to be detected in the natural environment compared with the reference sample, that is, the relative natural temperature coefficient, which can determine whether the sample to be detected is inclined to natural temperature sensing or natural cooling compared with the reference sample;

[0108] (4) Dry stage: from the end of the evaporation stage, to the absolute value of the rate of change of the temperature difference between the probe 3 on the detection assembly (detection probe 3) and the probe 3 on the reference assembly (reference probe 3) over time is less than a set value B, and the state of keeping the change rate less than the set value B for a certain dry time is a dry stage, if the change rate is ≥ the set value B, then re-timing after the change is less than the set value B; a certain time of keeping stable is to avoid reducing errors, and once the change rate is higher than a certain value, it means that the moisture in the sample to be detected has not been completely evaporated, so it is necessary to re-timing after the change rate is less than the set value, effectively eliminating errors; the heating and heat dissipation are basically balanced in this stage, and the main feature is that the temperature difference between the two probes 3 is basically constant, so as to facilitate comparison, and the dry time is still taken as the detection time; the ratio of the temperature difference between the detection probe 3 at the beginning and end of the stage to the dry time represents the absolute heat preservation performance of the sample to be detected under dry conditions, that is, the absolute dryness temperature coefficient, which can determine whether the sample to be detected is a dry warm feeling or a dry cool feeling; the difference between the temperature difference between the two probes 3 at the beginning and end of the stage and the dry time represents the relative heat preservation performance between the sample to be detected and the reference sample under dry conditions, which can determine whether the sample to be detected is a dry warm feeling or a dry cool feeling compared with the reference sample;

[0109] (5) Turn off the test system, open the cover 6, remove the reference sample and the sample to be detected, clean up, close the cover 6, and end the detection work.

[0110] In the constant temperature control mode, the temperature of the probe 3 on the reference assembly is the control object, and the probe 3 on the reference assembly is forced to control to a set temperature value (basic value + ΔT); but the heating power of the heating body 5 on the other assemblies “follows” the heating body 5 on the reference assembly. Since the physical and electrical properties of each assembly are consistent, in this control mode, the temperature of the reference assembly is forced to be constant, but the temperature of the other assemblies is in a free state, and its temperature is determined by the sample it covers.

[0111] The reference sample is a polyimide fabric. Since the temperature characteristics of the polyimide fabric are known, the moisture regain is low, and the stability is good, the polyimide fabric is used as the reference sample, especially after the process parameters of the polyimide fabric are fixed and unified (agreed), the agreed imide fabric can be used as a standard, which can be used as a standard reference object in a larger range, and the detection result is represented by the relative value “relative to the standard”, which has the practical significance of standard unification and high data acceptance.

[0112] Example 3

[0113] A textile temperature detection method:

[0114] The difference between the embodiment 2 and the embodiment 3 is that the constant power control mode of the heating body on the reference assembly is performed, the heating power of the heating body 5 on the reference assembly is taken as the control object, the heating bodies 5 on the reference assembly and the detection assembly are controlled to heat at the same time sequence and the same power, the heating power of the heating body 5 on the reference assembly is taken as the control target to maintain a certain constant value (set value), and the real-time temperature values of the two probes 3 are recorded.

[0115] In the constant power control mode, the heating power of the heating body 5 on the reference assembly is taken as the control object and is forced to be constant, and the heating powers of the heating bodies 5 on the other assemblies are “followed” by the heating body 5 on the reference assembly. Similarly, since the physical and electrical properties of each assembly are consistent, the temperature values of each assembly during the detection process represent the temperature properties of the products covered by each assembly, and the difference between the temperature values represents the difference in the temperature properties between the samples.

[0116] Embodiment 4

[0117] A detection method of the temperature of a textile product

[0118] The difference between the embodiment 2 and the embodiment 3 is that the constant power control mode of the heating body on the reference assembly is performed, the heating power of the heating body 5 on the reference assembly is taken as the control object, the heating bodies 5 on the reference assembly and the detection assembly are controlled to heat at the same time sequence and the same power, the heating power of the heating body 5 on the reference assembly is taken as the control target to maintain a certain constant value (set value), and the real-time temperature values of the two probes 3 are recorded.

[0119] The different set temperatures (set values) can also be set to obtain the temperature properties of the samples to be detected under different application scenarios (including non-wearing, such as used for pipe insulation).

[0120] Embodiment 5

[0121] A detection method of the temperature of a textile product

[0122] To ensure that the heating powers and the heating time sequences of the heating bodies 5 are consistent, the heating bodies 5 are connected in series, so that the current and the time sequence of each electric heating body 5 are consistent.

[0123] To further ensure that the heating powers of the heating bodies 5 are consistent, one of the following two methods is used for compensation:

[0124] 1) Hardware compensation: a parallel resistance is reserved for each electric heating body 5, the resistance is switched (connected or not connected) or the resistance value is adjusted, so that part of the current of each electric heating body 5 is bypassed to adjust the heating power and ensure that the powers of the electric heating bodies 5 are consistent.

[0125] 2) Software compensation: through calibration, the actual heating power of each electric heating body 5 is compensated by software to eliminate the detection error caused by the power difference.

[0126] The embodiment effectively ensures the consistency of the heating power of each heating body 5, and can ensure the detection accuracy.

[0127] Embodiment 6

[0128] A textile temperature detection method:

[0129] Different from embodiment 2, the reference sample is a standard air layer, a sealed cavity is formed by a polyimide material, the reference assembly is sealed in the cavity, and standard air (for example, dry air or vacuum of a specified negative pressure, -10 KPa) is injected into the cavity.

[0130] Different from embodiment 1, in the embodiment, the reference sample is specified as standard air, and the detection result is also a relative value relative to the standard air. Compared with the standard polyimide fabric as the standard and the standard air as the standard, the standard polyimide fabric can avoid the deviation caused by the material batch difference in the manufacturing process, the process deviation, the adhesion of pollutants in the use process and the like, and has more advantages in the reuse.

[0131] The application provides a textile temperature detection method, which does not need to detect a standard environment and does not need to place a sample in a standard environment for several hours to be detected; the real wearing feeling of the sample in a wearing environment can be obtained; the probe and the heating body are small in mass, small in heat capacity, small in temperature inertia, high in heat energy utilization rate, high in detection sensitivity and high in accuracy; instant detection and instant result can be achieved, the detection time is short, and the application scenario is particularly suitable for on-site real-time adjustment of a production process and on-site acquisition of a detection comparison result; absolute natural temperature coefficients, relative natural temperature coefficients in a natural environment and absolute dry temperature coefficients and relative dry temperature coefficients in a dry environment of a sample to be detected can be obtained, that is, whether the sample is inclined to natural temperature feeling, inclined to natural cool feeling, inclined to dry temperature feeling or inclined to dry cool feeling can be determined; one reference assembly and multiple detection assemblies are configured, multiple samples to be detected can be detected simultaneously and at one time, the detection environment, time and process are completely consistent, compared with batch detection and time detection, the consistency of the detection result is better, the comparability is better, and the detection efficiency is higher.

[0132] The above describes specific embodiments of the present specification, and other embodiments are within the scope of the appended claims. In some cases, the structures and methods recorded in the claims can refer to the above described specific embodiments to achieve the desired results. Those skilled in the art can easily achieve the desired results according to the above described specific embodiments and design ideas.

[0133] The above merely provides one or more embodiments of the present specification and is not intended to limit the present specification. Those skilled in the art can implement new embodiments or make various modifications and changes by means of new combinations of one or more embodiments of the present specification. Any modification, equivalent replacement, improvement, technical combination, etc. within the spirit and principle of one or more embodiments of the present specification shall be included in the scope of claims of the present specification.

Claims

1. A temperature characteristic detection device, characterized in that, It includes a detection cavity (1), a reference component and at least one detection component are provided in the detection cavity (1), the design parameters of the reference component and the detection component are exactly the same, each component includes a probe (3) and a heating element (5), and the probe (3) and heating element (5) on each component are closely attached to each other and the attachment method is the same; the probe (3) and heating element (5) are both low heat capacity and low thermal inertia type; The top of the detection chamber (1) is provided with a cover (6), and the bottom of the cover (6) and the detection chamber (1) are provided with ventilation grilles (7) of the same size and relative position at the positions of the reference component and each detection component. The heating element (5) is a polyimide thin film heater, and the probe (3) is a thin film temperature sensor; Temperature characteristic parameters, including drying rate, absolute natural temperature coefficient, relative natural temperature coefficient, absolute dryness temperature coefficient, and relative dryness temperature coefficient.

2. The temperature characteristic detection device according to claim 1, characterized in that, It also includes a measurement and control system electrically connected to the probe (3) and the heating element (5), the measurement and control system being located outside the detection cavity (1); the heating element (5) on the reference component and the heating element (5) on the detection component are connected in series and then connected to the measurement and control system.

3. The temperature characteristic detection device according to claim 1, characterized in that, The heating element (5) is provided with mounting claws (4) on its edge, and mounting holes are provided on the mounting claws (4). The detection cavity (1) is provided with a fixing seat (2) that is adapted to the mounting holes.

4. A method for detecting the temperature of textiles, characterized in that, The method for detecting the temperature of textiles using the temperature characteristic detection device according to any one of claims 1-3 includes the following steps: Equilibrium: The reference sample and the sample to be tested are respectively wrapped around the reference component and the detection component, and equilibrated for a period of time until the rate of change of temperature detected by the probe (3) of the reference component and the detection component over time is lower than the set value; Heating: Start heating of each heating element (5) and record the temperature values ​​of the probe (3) on the detection component and the probe (3) on the reference component in real time during the heating process; Cooling: Stop heating of each heating element (5) and record the temperature values ​​of the probe (3) on the detection component and the probe (3) on the reference component in real time during the cooling process; Time-segmented: Based on the rate of change of the temperature difference between the probe (3) on the detection component and the probe (3) on the reference component over time, the heating and cooling processes are divided into the initial stage, the evaporation stage and the drying stage; Data analysis: Based on the duration, real-time temperature, and temperature difference of each time period, calculate the temperature characteristic parameters of the sample to be tested relative to the reference sample, including drying rate, absolute natural temperature coefficient, relative natural temperature coefficient, absolute dryness temperature coefficient, and relative dryness temperature coefficient.

5. The method for detecting the temperature of textiles according to claim 4, characterized in that, The specific method for dividing the time periods is as follows: The initial start-up phase is the period from when the real-time temperature difference between the probe (3) on the detection component and the probe (3) on the reference component is 0 or close to 0 to when the temperature difference exceeds the set value A. From the end of the initial stage until the absolute value of the rate of change of the real-time temperature difference between the probe (3) on the detection component and the probe (3) on the reference component reaches its maximum value and then falls back to less than the set value B, the evaporation stage is the time used for drying. From the end of the evaporation stage until the absolute value of the rate of change of the temperature difference between the probe (3) on the detection component and the probe (3) on the reference component is less than the set value B, and the rate of change remains less than the set value B for a drying time, this is the drying stage.

6. The method for detecting the temperature of textiles according to claim 5, characterized in that, The absolute natural temperature coefficient is the ratio of the temperature difference between the probe (3) on the detection component at the beginning and end of the evaporation stage to the drying time; The relative natural temperature coefficient is the ratio of the temperature difference between the probe (3) on the detection component and the probe (3) on the reference component at the beginning and end of the evaporation stage to the drying time. The absolute dryness temperature coefficient is the ratio of the temperature difference between the probe (3) on the detection component at the beginning and end of the drying stage to the drying time. The relative dryness temperature coefficient is the ratio of the temperature difference between the probe (3) on the detection component and the probe (3) on the reference component at the beginning and end of the drying stage to the drying time.

7. The method for detecting the temperature of textiles according to claim 4, characterized in that, The detection method uses either a constant temperature control mode or a constant power control mode. The constant temperature control mode: the temperature of the probe (3) on the reference component is used as the reference control object, and the temperature of the probe (3) on the reference component at the start of detection is used as the base temperature value. The heating elements on the reference component and the heating elements on the detection component are heated with the same power and in the same sequence, so that the set temperature of the probe (3) on the reference component = base temperature value + ΔT. The constant power control mode: taking the heating power of the heating element (5) on the reference component as the reference control object, the heating element (5) on the reference component and the heating element (5) on the detection component are controlled to heat at the same power and in the same sequence, so that the heating power of the heating element on the reference component is constant.

8. The method for detecting the temperature of textiles according to claim 4, characterized in that, The reference sample is a polyimide fabric or a standard air layer; The standard air layer is a sealed cavity made of polyimide material, in which the reference component is sealed and filled with standard air or evacuated to a specified negative pressure value.

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