A quilt fitting measurement method

Abstract

The invention relates to the technical field of home textiles, and discloses a quilt fitting quantification method, comprising: placing a naked dummy on a mattress, covering the naked dummy with a quilt to be detected, and obtaining the volume of the naked dummy and the volume of the dummy covered with the quilt; measuring the height of the point where the naked dummy is at the greatest distance from the mattress as the height of the highest point when lying flat; measuring the length and width of the air layer between the quilt to be detected and the naked dummy, and calculating the initial air layer volume under the quilt with the height of the highest point when lying flat and the volume of the naked dummy; obtaining the thickness, length and width of the quilt to be detected, and calculating the quilt body volume of the quilt to be detected; obtaining the actual air layer volume by subtracting the volume of the naked dummy and the quilt body volume from the volume of the dummy covered with the quilt; and taking the difference between the initial air layer volume under the quilt and the actual air layer volume as the proportion of the initial air layer volume under the quilt as the quilt fitting degree of the quilt to be detected, thereby realizing the quantification of the quilt fitting degree.

Description

Technical Field

[0001] The invention relates to the technical field of home textiles, in particular to a quilt fitting quantification method. Background Art

[0002] Good sleep quality is essential to maintaining human physiological and psychological health. Thermal comfort is an important factor affecting sleep quality. Temperatures above or below thermal comfort will have an adverse effect on sleep. The total thermal resistance of the bedding system is an important factor affecting the thermal comfort of the human body in the sleeping environment. The air layer of the microclimate inside the quilt is an important factor affecting thermal resistance. The distribution of the air layer of the microclimate inside the quilt is uneven during sleep, and the fit of the quilt is a key indicator to quantify the size of the air layer of the microclimate inside the quilt. Therefore, the concept and calculation of quilt fit are of great significance for deepening the research on quilt thermal comfort.

[0003] However, in the field of bedding systems, there is no clear method to calculate the fit of a quilt. In the field of clothing, 3D laser scanning technology is used to obtain naked and dressed human models. After alignment, the cross-section of the entire garment or a certain part is intercepted, and the distance between a discrete point on the garment contour line of the cross-section and the human body is used to characterize the thickness of the air layer under the clothing in the corresponding cross-section. However, the measurement and calculation method in the field of clothing is based on the measurement of the standing posture of the human body, which is not suitable for the fit measurement of the human body lying down. The material of the clothing is different from that of the quilt, and the factors that need to be considered in the measurement and calculation are also different.

[0004] At present, the research on quilt thermal comfort mainly focuses on the thermal resistance and moisture permeability of quilts, and the thermal resistance of quilts is mainly measured by using a thermal manikin. However, accurate thermal manikin are expensive, and thermal manikin is needed for measurement every time the thermal comfort of quilts is studied, which is easy to damage the thermal manikin.

[0005] In summary, there is a lack of quilt fit calculation methods that are directly applied to the field of quilts, and clothing fit calculation methods are not suitable for quilt fit calculations due to the differences in clothing materials and human body postures during measurement. Summary of the invention

[0006] Therefore, the technical problem to be solved by the present invention is to fill the gap in the quilt fitting degree calculation method in the prior art.

[0007] In order to solve the above technical problems, the present invention provides a quilt fitting quantification method, comprising:

[0008] Place a naked dummy on the mattress, and measure and obtain the point cloud model and volume of the naked dummy;

[0009] Covering the naked mannequin with the quilt to be tested, and measuring and obtaining a point cloud model of the mannequin covered with the quilt and a volume of the mannequin covered with the quilt;

[0010] Align the naked mannequin point cloud model with the quilt-covered mannequin point cloud model, and measure the height of the point where the naked mannequin is at the greatest distance from the mattress as the highest point height when lying flat;

[0011] Based on the point cloud model of the dummy covered with a quilt, measure the length and width of the air layer between the quilt to be tested and the naked dummy; calculate the initial volume of the air layer under the quilt based on the length and width of the air layer, the height of the highest point lying flat and the volume of the naked dummy;

[0012] Obtaining the thickness, length and width of the quilt to be detected, and calculating the quilt volume of the quilt to be detected;

[0013] The actual volume of the air layer is obtained by subtracting the volume of the naked dummy and the volume of the quilt from the volume of the dummy covered with a quilt.

[0014] The ratio of the difference between the volume of the initial air layer under the quilt and the actual volume of the air layer to the volume of the initial air layer under the quilt is taken as the quilt fit of the quilt to be tested.

[0015] Preferably, after obtaining the quilt fit of the quilt to be tested, the method further includes: performing linear fitting based on a plurality of quilts with different filling amounts and their corresponding quilt fits to obtain the relationship between the quilt filling amount and the quilt fit.

[0016] Preferably, when the plurality of quilts with different filling amounts are down quilts, the filling amounts of the quilts are Fit with quilt The relationship between them is expressed as:

[0017] .

[0018] Preferably, after obtaining the quilt fit of the quilt to be tested, the method further includes:

[0019] A plurality of quilts with different filling amounts are respectively covered on a heating manikin, and the total thermal resistance corresponding to each quilt is measured using the heating manikin;

[0020] Based on the quilt fit of multiple quilts with different filling amounts and their corresponding total thermal resistance, a linear fitting is performed to obtain the relationship between the quilt fit and the total thermal resistance of the quilt.

[0021] Preferably, when the quilts with different filling amounts are down quilts, the quilt fit is Total thermal resistance with quilt The relationship between them is expressed as:

[0022] ;

[0023] in, Indicates An exponential function with base .

[0024] Preferably, after aligning the naked mannequin point cloud model with the quilt-covered mannequin point cloud model, the method further includes: dividing the aligned quilt-covered mannequin point cloud model into a plurality of partial point cloud models according to the parts, and calculating the quilt fitting degree corresponding to each part, including:

[0025] The aligned point cloud model of the quilt-covered mannequin is divided into 10 parts according to the naked mannequin's shoulders, hands, forearms, upper arms, chest, abdomen, buttocks, thighs, calves, and feet, and the quilt fit corresponding to the i-th part is calculated. , expressed as:

[0026] ;

[0027] Where i represents the i-th part of the naked mannequin, and its value range is [1,10]. When i=1, it means that the current calculated part is the shoulder, and when i=10, it means that the current calculated part is the foot. represents the volume of the initial air layer under the ith position, represents the volume of the ith part of the quilt-covered dummy, represents the volume of the ith part of the naked mannequin, represents the volume of the i-th part.

[0028] Preferably, the volume of the initial air layer under the blanket is calculated based on the length of the air layer, the width of the air layer, the height of the highest point of the lying flat and the volume of the naked dummy, and is expressed as:

[0029] ;

[0030] in, represents the volume of the initial air layer below, The highest point height when lying flat. is the air layer length, is the width of the air layer, Indicates the volume of a naked mannequin.

[0031] Preferably, the thickness, length and width of the quilt to be detected are obtained, and the quilt volume of the quilt to be detected is calculated, which is expressed as:

[0032] Randomly select three locations on the quilt to be tested and measure three thicknesses , , , take the average value of the thickness at three locations as the thickness of the quilt to be tested , expressed as: ;

[0033] The volume of the quilt to be tested , expressed as:

[0034] ;

[0035] in, Indicates the length of the quilt to be tested. Indicates the width of the quilt to be detected.

[0036] Preferably, the actual volume of the air layer is obtained by subtracting the volume of the naked dummy and the volume of the quilt from the volume of the dummy covered with a quilt, which is expressed as:

[0037] ;

[0038] in, represents the actual air layer volume, Indicates the volume of the dummy covered with a quilt, represents the volume of the naked mannequin, Indicates the volume of the object.

[0039] Preferably, the difference between the volume of the initial air layer under the quilt and the actual volume of the air layer, as a ratio of the volume of the initial air layer under the quilt, is used as the quilt fit of the quilt to be tested, and is expressed as:

[0040] ;

[0041] in, Indicates the quilt fit of the quilt to be tested. is the volume of the initial air layer below, Indicates the actual air layer volume.

[0042] The above technical solution of the present invention has the following beneficial effects compared with the prior art:

[0043] The quilt fit quantification method of the present invention fully considers the problem that the air layer inside the quilt is difficult to measure by contact, adopts a non-contact measurement method to obtain three-dimensional point cloud measurement data, and quantifies the quilt fit through corresponding volume calculation based on the relevant measurement data, thus providing a solution to the problem that the air layer under the quilt cannot be clearly calculated, filling the research gap in the quilt fit, and expanding the breadth and depth of research in the quilt-related field;

[0044] At the same time, after calculating the fit of the quilt, the present invention can fit the relationship between the filling amount of the quilt and the fit of the quilt, as well as the relationship between the fit of the quilt and the total thermal resistance, and establish its relationship with the total thermal resistance of the quilt by quantifying the fit of the quilt; the present invention only needs to use a thermal manikin when constructing the fit of the quilt and the total thermal resistance, and then the relationship can be used to directly obtain the total thermal resistance of the quilt based on the fit of the quilt, thereby reducing the frequency of use of the thermal manikin, and providing the possibility of studying the thermal comfort of the quilt without using a thermal manikin, thereby simplifying the measurement logic of the total thermal resistance of the quilt and reducing the measurement cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments of the present invention in conjunction with the accompanying drawings, wherein:

[0046] Figure 1 It is a flow chart of the steps of the quilt fitting quantification method provided by the present invention;

[0047] Figure 2 It is a schematic diagram of the three-dimensional nude dummy model provided by the present invention;

[0048] Figure 3 It is a schematic diagram of the three-dimensional quilt-covered mannequin model provided by the present invention;

[0049] Figure 4 This is a schematic diagram of the highest point of the flat-lying state provided by the present invention;

[0050] Figure 5 It is a schematic diagram of air layer length measurement and cutting provided by the present invention;

[0051] Figure 6 It is a schematic diagram of air layer width measurement and cutting provided by the present invention;

[0052] Figure 7 It is a schematic diagram of the initial air layer under the quilt provided by the present invention. DETAILED DESCRIPTION

[0053] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0054] Reference Figure 1 As shown, the step flow chart of the quilt fitting quantification method provided by the present invention includes the following steps:

[0055] S101: placing a naked dummy on a mattress, and measuring and obtaining a point cloud model and a volume of the naked dummy;

[0056] S102: Covering the naked mannequin with the quilt to be tested, and measuring and obtaining a point cloud model of the mannequin covered with the quilt and a volume of the mannequin covered with the quilt;

[0057] S103: aligning the naked mannequin point cloud model with the quilt-covered mannequin point cloud model, and measuring the height of the point where the naked mannequin is at the greatest distance from the mattress as the highest point height when lying flat;

[0058] S104: Based on the point cloud model of the quilt-covered dummy, measure the length and width of the air layer between the quilt to be tested and the naked dummy; based on the length and width of the air layer, the height of the highest point lying flat and the volume of the naked dummy, calculate the initial volume of the air layer under the quilt, expressed as:

[0059] ;

[0060] in, represents the volume of the initial air layer below, The highest point height when lying flat. is the air layer length, is the width of the air layer, Indicates the volume of a naked mannequin;

[0061] S105: Obtaining the thickness, length and width of the quilt to be detected, and calculating the quilt volume of the quilt to be detected, including:

[0062] S105-1: Randomly select three locations on the quilt to be tested and measure three thicknesses , , , take the average value of the thickness at three locations as the thickness of the quilt to be tested , expressed as: ;

[0063] S105-2: Quilt volume of the quilt to be tested , expressed as:

[0064] ;

[0065] in, Indicates the length of the quilt to be tested. Indicates the width of the quilt to be tested;

[0066] S106: Subtract the volume of the naked dummy and the volume of the quilt from the volume of the dummy covered with a quilt to obtain the actual volume of the air layer, which is expressed as:

[0067] ;

[0068] in, represents the actual air layer volume, Indicates the volume of the dummy covered with a quilt, represents the volume of the naked mannequin, Indicates the volume of the object;

[0069] S107: The difference between the volume of the initial air layer under the quilt and the actual volume of the air layer is taken as the proportion of the volume of the initial air layer under the quilt as the quilt fit of the quilt to be tested, expressed as:

[0070] ;

[0071] It can be further expressed as: ;

[0072] in, Indicates the quilt fit of the quilt to be tested. is the volume of the initial air layer below, Indicates the actual air layer volume.

[0073] In an embodiment of the present invention, after obtaining the quilt fit of the quilt to be tested, it also includes: performing linear fitting based on multiple quilts with different filling amounts and their corresponding quilt fits to obtain the relationship between the quilt filling amount and the quilt fit.

[0074] Specifically, when the quilts with different filling amounts are down quilts, the filling amounts of the quilts are Fit with quilt The relationship between them is expressed as: .

[0075] In an embodiment of the present invention, after obtaining the quilt fit of the quilt to be tested, it also includes: covering a plurality of quilts with different filling amounts on a thermal manikin respectively, and using the thermal manikin to measure the total thermal resistance corresponding to each quilt; based on the quilt fit of the plurality of quilts with different filling amounts and their corresponding total thermal resistances, linear fitting is performed to obtain the relationship between the quilt fit and the total thermal resistance of the quilt.

[0076] Specifically, when the quilts with different filling amounts are down quilts, the quilt fit is Total thermal resistance with quilt The relationship between them is expressed as: ;in, Indicates An exponential function with base .

[0077] In an embodiment of the present invention, after aligning the naked mannequin point cloud model with the quilt-covered mannequin point cloud model, it also includes: dividing the aligned quilt-covered mannequin point cloud model into multiple partial point cloud models according to parts, and calculating the quilt fit corresponding to each part.

[0078] At this time, reverse engineering software is used to align the overlapping naked mannequin and the quilt-covered mannequin, and the overlapping three-dimensional data are aligned for cutting and trimming. The naked mannequin is divided into 10 parts: shoulder, hand, forearm, upper arm, chest, abdomen, buttocks, thigh, calf, and foot, and the quilt fit corresponding to each part is calculated; i represents the i-th part of the mannequin, and the value range is [1,10]; when i=1, it means that the current calculation part is the shoulder, and when i=10, it means that the current calculation part is the foot; the quilt fit of the i-th part , expressed as:

[0079] ;

[0080] in, represents the volume of the initial air layer under the ith position, represents the volume of the ith part of the quilt-covered dummy, represents the volume of the ith part of the naked mannequin, represents the volume of the i-th part.

[0081] The calculation of the volume of each part of the naked mannequin, as well as the corresponding volume of the quilt, the volume of the quilt body and the volume of the initial air layer under the quilt, is the same as the calculation logic of the naked mannequin as a whole.

[0082] The quilt fit quantification method described in the present invention fully considers the problem that the air layer inside the quilt is difficult to measure by contact, adopts a non-contact measurement method to obtain three-dimensional point cloud measurement data, and based on the relevant measurement data, quantifies the fit of the quilt through corresponding volume calculation, provides a solution to the problem that the air layer under the quilt cannot be clearly calculated, fills the research gap in the fit of the quilt, and expands the breadth and depth of research in the field of quilts; at the same time, after calculating the fit of the quilt, the present invention can fit the relationship between the filling amount of the quilt and the fit of the quilt, as well as the relationship between the fit of the quilt and the total thermal resistance, and establishes its relationship with the total thermal resistance of the quilt through the quantification of the fit of the quilt; the present invention only needs to use a thermal manikin when constructing the fit of the quilt and the total thermal resistance, and then can use the relationship to directly obtain the total thermal resistance of the quilt based on the fit of the quilt, thereby reducing the use frequency of the thermal manikin, and providing the possibility of studying the thermal comfort of the quilt without using a thermal manikin, simplifying the measurement logic of the total thermal resistance of the quilt, and reducing the measurement cost.

[0083] Based on the above embodiment, in an embodiment of the present invention, specific parameters are set for the quilt fitting quantification method proposed in the present invention to perform quilt fitting quantification, including:

[0084] S201: Measurement of the volume of naked mannequins and covered mannequins;

[0085] S201-1: Place a naked dummy lying flat on the center of the mattress, with the head of the naked dummy 15 cm away from the upper edge of the mattress and the center line of the naked dummy 45 cm away from the left and right edges of the mattress, so that the center line of the mattress coincides with the center line of the naked dummy;

[0086] S201-2: Scan the naked dummy on the mattress using a handheld 3D scanner, where the scanned portion includes the mattress and the naked dummy within the four edges of the mattress; Figure 2 As shown, it is a schematic diagram of a three-dimensional naked mannequin model;

[0087] S201-3: Cover the nude mannequin with a quilt and scan the quilt-covered mannequin using a handheld 3D scanner. The scanned part includes the mattress within the four edges of the mattress and the quilt-covered mannequin; refer to Figure 3 As shown, it is a schematic diagram of a three-dimensional quilt-covered mannequin model;

[0088] S201-4: Based on the three-dimensional point cloud data of the naked mannequin and the mannequin covered with a quilt, the point cloud data are processed and repaired using reverse engineering software to obtain a three-dimensional naked mannequin model;

[0089] The process of processing point cloud data using Geomagic Studio includes: deleting redundant parts of the point cloud data, repairing corners that are difficult to scan (such as the gap between the dummy and the mattress); encapsulating the upper surface of the mattress to form irregular closed image data with the upper surface of the mattress as the bottom and the naked dummy as the upper surface;

[0090] S201-5: Geomagic Studio software calculation function automatically calculates the volume of the naked mannequin And the volume of the dummies covered with quilts .

[0091] S202: Calculate the volume of the initial air layer below;

[0092] S202-1: Use a measuring tape to measure the height of the highest point of a naked dummy lying flat on the mattress, below the head. , refer to Figure 4 As shown, it is a schematic diagram of the highest point of lying flat;

[0093] S202-2: Use Geomagic Studio software to align the 3D naked mannequin model in a flat position and the 3D mannequin model covered with a quilt, build a quilt-mannequin alignment model, cut the quilt-mannequin alignment model in the center, and measure the length of the air layer using the actual and image scales. and air layer width ;reference Figure 5 The figure shows the schematic diagram of air layer length measurement and cutting. Figure 6 As shown, it is a schematic diagram of air layer width measurement and cutting;

[0094] The volume of the initial air layer below is expressed as:

[0095] ;

[0096] In the formula, The height of the highest point of the dummy lying flat, in cm; is the length of the air layer in cm, is the width of the air layer, in cm; is the volume of the naked mannequin in the air layer, in cm 3 .

[0097] S203: Calculate the volume of the object;

[0098] S203-1: Use a ruler to measure the length of the quilt used to cover the nude mannequin. The width of the quilt within the edge of the mattress ;

[0099] Reference Figure 3 As shown, the length of the quilt is the distance between points b and c, that is, the length from the upper edge of the quilt to the lower edge of the quilt; the width of the quilt is the distance between points a and b;

[0100] S203-2: Use a vernier caliper to measure the thickness of the quilt covering the naked mannequin, and randomly select three locations to measure and obtain three thicknesses , , , let the thickness of the quilt be the average of the thicknesses at three locations ;

[0101] S203-3: The volume of the quilt within the mattress edge, expressed as:

[0102] ;

[0103] In the formula, the length of the quilt inside the mattress edge is , quilt width inside mattress edge , thickness of quilt inside mattress edge , unit is cm;

[0104] At this point, the data required for the fit formula has been obtained through measurement and calculation.

[0105] S204: Quilt fit measurement;

[0106] The air layer under the quilt refers to the gap between the quilt and the dummy; the quilt fit refers to the fit between the quilt and the dummy; the quilt fit is the ratio of the difference between the initial air layer and the actual air layer under the quilt to the initial air layer; the larger the ratio, the greater the quilt fit, and the smaller the ratio, the smaller the quilt fit; refer to Figure 7 As shown, it is a schematic diagram of the initial air layer under the blanket;

[0107] The quantitative formula for quilt fitting is expressed as:

[0108] ;

[0109] in, is the initial air layer volume, The volume of the dummy for the quilt, is the volume of the naked mannequin, The volume of the quilt inside the mattress, in cm 3 .

[0110] This embodiment fully considers the problem that the air layer inside the quilt is difficult to measure by contact, adopts a non-contact measurement method, and uses handheld three-dimensional scanning technology to obtain data in layers. It is a scientific and objective measurement method that can provide data support for the three-dimensional heat transfer simulation of the bedding system. It has higher accuracy and stronger reference value, and can deepen the research on the comfort of bedding.

[0111] Based on the above embodiment, the quilt fitting degree calculation method proposed in the present invention is used in this embodiment to calculate the fitting degrees of quilts of five different materials. The fitting degrees of quilts of different materials are shown in Table 1:

[0112] Table 1 The fit of quilts of different materials

[0113]

[0114] Based on the above embodiment, in the embodiment of the present invention, the quilt fit of different parts of the naked mannequin is calculated based on the above logic. Specifically, Geomagic Quality software is used to align and overlap the naked mannequin and the quilt-covered mannequin, and Geomagic Studio software is used to cut the aligned and overlapped three-dimensional data into 10 parts: shoulder, hand, forearm, upper arm, chest, abdomen, buttocks, thigh, calf, and foot; so as to calculate the local quilt fit of different parts .

[0115] Taking a 95% goose down quilt as an example, the fit of 10 different parts, including shoulders, hands, forearms, upper arms, chest, abdomen, buttocks, thighs, calves, and feet, was calculated after cutting. The local fit is shown in Table 2:

[0116] Table 2 Local fit

[0117] Location Shoulders hand forearm Upper arm Chest abdomen Hips thigh Calf Foot <![CDATA[F i ]]> 0.70 0.66 0.53 0.73 0.69 0.55 0.61 0.47 0.60 0.57

[0118] Based on the above embodiment, the present invention takes the duck down quilt in the down quilt as an example, and calculates the filling amount of 87g / m 2 ~283g / m 2 The fitting degree F of multiple duck down quilts in the range of 1000mm is calculated by linear regression equation. The filling amount is 87g / m 2 ~283g / m 2 The relationship between the fit and filling amount of multiple duck down quilts in the range was fitted, and the fitting correlation coefficient R2 was 0.917. The relationship prediction model was obtained as follows: , where x is the filling amount of the duck down quilt, in g / m 2 , F is the degree of fit, without unit.

[0119] Based on the above embodiment, in the embodiment of the present invention, the total thermal resistance R of multiple duck down quilts is measured according to the method for measuring the thermal resistance of clothing by a thermal manikin in GB / T 18398-2001; the filling amount is calculated to be 87g / m 2 ~283g / m 2 The fitting degree F of multiple duck down quilts in the range of 1000 m2 was calculated by nonlinear regression equation method for the supine sleeping position and the filling volume of 87 g / m2. 2 ~283g / m 2 The relationship between the total thermal resistance and fit of multiple duck down quilts in the range was fitted, and the fitting correlation coefficient R2 was 0.876. The relationship prediction model was obtained as follows: , where F is the degree of fit, unitless, and R is the total thermal resistance, unit is clo.

[0120] The quilt fit quantification method described in the present invention fully considers the problem that the air layer inside the quilt is difficult to measure by contact, adopts a non-contact measurement method to obtain three-dimensional point cloud measurement data, and based on the relevant measurement data, quantifies the fit of the quilt through corresponding volume calculation, provides a solution to the problem that the air layer under the quilt cannot be clearly calculated, fills the research gap in the fit of the quilt, and expands the breadth and depth of research in the field of quilts; at the same time, after calculating the fit of the quilt, the present invention can fit the relationship between the filling amount of the quilt and the fit of the quilt, as well as the relationship between the fit of the quilt and the total thermal resistance, and establishes its relationship with the total thermal resistance of the quilt through the quantification of the fit of the quilt; the present invention only needs to use a thermal manikin when constructing the fit of the quilt and the total thermal resistance, and then can use the relationship to directly obtain the total thermal resistance of the quilt based on the fit of the quilt, thereby reducing the use frequency of the thermal manikin, and providing the possibility of studying the thermal comfort of the quilt without using a thermal manikin, simplifying the measurement logic of the total thermal resistance of the quilt, and reducing the measurement cost.

[0121] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0122] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0123] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0124] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0125] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. A quilt fitting quantification method, characterized in that: The following steps are involved: Place a naked dummy on the mattress, and measure and obtain the point cloud model and volume of the naked dummy; Covering the naked mannequin with the quilt to be tested, and measuring and obtaining a point cloud model of the mannequin covered with the quilt and a volume of the mannequin covered with the quilt; Align the naked mannequin point cloud model with the quilt-covered mannequin point cloud model, and measure the height of the point where the naked mannequin is at the greatest distance from the mattress as the highest point height when lying flat; Based on the point cloud model of the dummy covered with a quilt, measure the length and width of the air layer between the quilt to be tested and the naked dummy; calculate the initial volume of the air layer under the quilt based on the length and width of the air layer, the height of the highest point lying flat and the volume of the naked dummy; Obtaining the thickness, length and width of the quilt to be detected, and calculating the quilt volume of the quilt to be detected; The actual volume of the air layer is obtained by subtracting the volume of the naked dummy and the volume of the quilt to be tested from the volume of the quilt-covered dummy. The ratio of the difference between the volume of the initial air layer under the quilt and the actual volume of the air layer to the volume of the initial air layer under the quilt is taken as the quilt fit of the quilt to be tested.

2. The quilt fitting quantification method according to claim 1, characterized in that: After obtaining the quilt fit of the quilt to be tested, the method further includes: performing linear fitting based on a plurality of quilts with different filling amounts and their corresponding quilt fits to obtain the relationship between the quilt filling amount and the quilt fit.

3. The quilt fitting quantification method according to claim 2, characterized in that: When multiple quilts with different filling amounts are down quilts, Fit with quilt The relationship between them is expressed as: 。 4. The quilt fitting quantification method according to claim 1, characterized in that: After obtaining the quilt fit of the quilt to be tested, it also includes: A plurality of quilts with different filling amounts are respectively covered on a heating manikin, and the total thermal resistance corresponding to each quilt is measured using the heating manikin; Based on the quilt fit of multiple quilts with different filling amounts and their corresponding total thermal resistance, a linear fitting is performed to obtain the relationship between the quilt fit and the total thermal resistance of the quilt.

5. The quilt fitting quantification method according to claim 4, characterized in that: When multiple quilts with different filling amounts are down quilts, the fit of the quilts Total thermal resistance with quilt The relationship between them is expressed as: ； in, Indicates An exponential function with base .

6. The quilt fitting quantification method according to claim 1, characterized in that: After aligning the naked mannequin point cloud model with the quilt-covered mannequin point cloud model, the method further includes: dividing the aligned quilt-covered mannequin point cloud model into a plurality of partial point cloud models according to the parts, and calculating the quilt fitting degree corresponding to each part, including: The aligned point cloud model of the quilt-covered mannequin is divided into 10 parts according to the naked mannequin's shoulders, hands, forearms, upper arms, chest, abdomen, buttocks, thighs, calves, and feet, and the quilt fit corresponding to the i-th part is calculated. , expressed as: ； Where i represents the i-th part of the naked mannequin, and its value range is [1,10]. When i=1, it means that the current calculated part is the shoulder, and when i=10, it means that the current calculated part is the foot. represents the volume of the initial air layer under the ith position, represents the volume of the ith part of the quilt-covered dummy, represents the volume of the ith part of the naked mannequin, represents the volume of the i-th part.

7. The quilt fitting quantification method according to claim 1, characterized in that: The volume of the initial air layer under the quilt is calculated based on the length of the air layer, the width of the air layer, the height of the highest point of the flat lying position and the volume of the naked dummy, which is expressed as: ； in, represents the volume of the initial air layer below, The highest point height when lying flat. is the air layer length, is the width of the air layer, Indicates the volume of a naked mannequin.

8. The quilt fitting quantification method according to claim 1, characterized in that: The thickness, length and width of the quilt to be detected are obtained, and the quilt volume of the quilt to be detected is calculated, which is expressed as: Randomly select three locations on the quilt to be tested and measure three thicknesses , , , take the average value of the thickness at three locations as the thickness of the quilt to be tested , expressed as: ; The volume of the quilt to be tested , expressed as: ； in, Indicates the length of the quilt to be tested. Indicates the width of the quilt to be detected.

9. The quilt fitting quantification method according to claim 1, characterized in that: The actual volume of the air layer is obtained by subtracting the volume of the naked dummy and the volume of the quilt to be tested from the volume of the quilt-covered dummy, which is expressed as: ； in, represents the actual air layer volume, Indicates the volume of the dummy covered with a quilt, represents the volume of the naked mannequin, Indicates the quilt volume of the quilt to be tested.

10. The quilt fitting quantification method according to claim 9, characterized in that: The difference between the volume of the initial air layer under the quilt and the actual volume of the air layer, as a ratio of the volume of the initial air layer under the quilt, is used as the quilt fit of the quilt to be tested, and is expressed as: ； in, Indicates the fit of the quilt. is the volume of the initial air layer below, Indicates the actual air layer volume.

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