A method for quantifying the fit of a comforter.

Abstract

This invention provides a method for quantifying comforter fit, bridging the gap in methods for calculating comforter fit. [Solution] This method includes the steps of: S101, placing the comforter to be measured on a nude mannequin and obtaining the volume of the nude mannequin and the volume of the mannequin with the comforter on it; S103, measuring the height of the point furthest from the mattress on the nude mannequin and determining it as the highest point when the mannequin is lying supine; S104, calculating the volume of the initial air layer under the comforter; S105, obtaining the thickness, length, and width of the comforter to be measured and calculating the volume of the comforter to be measured; S106, subtracting the volume of the nude mannequin and the volume of the comforter itself from the volume of the mannequin with the comforter on it to obtain the actual air layer volume; and S107, determining the comforter fit of the comforter to be measured as the ratio of the difference between the initial air layer volume under the comforter and the actual air layer volume to the volume of the initial air layer under the comforter.

Claims

1. A method for quantifying the fit of a comforter, The steps include: placing a nude mannequin on a mattress, and obtaining a point cloud model of the nude mannequin and measuring the volume of the nude mannequin; The steps include: placing the quilt to be measured over the nude mannequin, and obtaining a point cloud model of the mannequin with the quilt on, and measuring and obtaining the volume of the mannequin with the quilt on; The process involves aligning the point cloud model of the nude mannequin with the point cloud model of the mannequin with the blanket, measuring the height of the point furthest from the mattress on the nude mannequin, and setting this as the height of the highest point when the mannequin is lying supine. The process involves measuring the length and width of the air layer between the mannequin and the nude mannequin based on a point cloud model of the mannequin with a comforter on it, and calculating the initial volume of the air layer under the comforter based on the length and width of the air layer, the height of the highest point when the mannequin is lying supine, and the volume of the nude mannequin. The steps include obtaining the thickness, length, and width of the comforter to be measured, and calculating the volume of the comforter itself. The steps include obtaining the actual air layer volume by subtracting the volume of a nude mannequin and the volume of the comforter itself from the volume of a mannequin with a comforter on it, A method for quantifying comforter fit, characterized by including the step of defining the comforter fit of the comforter to be measured as the ratio of the difference between the volume of the initial air layer under the comforter and the actual air layer volume to the volume of the initial air layer under the comforter.

2. After obtaining the comforter fit score of the comforter to be measured, The method for quantifying comforter fit according to claim 1, further comprising the step of performing linear fitting based on a plurality of comforters with different filling amounts and their corresponding comforter fit degrees to obtain a relationship between the filling amount and the fit degree of the comforter.

3. If multiple comforters with different filling amounts are down comforters, the relationship between the filling amount of the comforter and the degree of comforter fit is: F=0.625+(6.566×10 -４ )x The method for quantifying the fit of a comforter according to claim 2, characterized in that it is shown as follows.

4. After obtaining the comforter fit score of the comforter to be measured, The steps include: hanging multiple comforters with different filling amounts on a thermal mannequin and measuring the total thermal resistance corresponding to each comforter using the thermal mannequin; A method for quantifying comforter fit according to claim 1, further comprising the step of performing linear fitting based on the comforter fit and the corresponding total thermal resistance of a plurality of comforters with different filling amounts to obtain a relationship between comforter fit and total comforter thermal resistance.

5. If multiple comforters with different filling amounts are down comforters, the relationship between comforter fit degree F and total comforter thermal resistance R is: R=exp(-11.673+35.760F-24.882F ２ ) It was shown as, The method for quantifying the fit of a comforter according to claim 4, characterized in that, here, exp represents an exponential function with base e.

6. After aligning the point cloud model of the nude mannequin and the point cloud model of the mannequin with the blanket on, The step involves dividing a point cloud model of a mannequin with a comforter draped over it after alignment into multiple sub-point cloud models according to the body part, and calculating the comforter fit degree corresponding to each body part, The point cloud model of the mannequin with the comforter draped over it after alignment is divided into 10 parts corresponding to the shoulders, hands, forearms, upper arms, chest, abdomen, buttocks, upper legs, lower legs, and feet of the nude mannequin, and the comforter fit degree F corresponding to the i-th part is calculated. ｉ Calculate, As shown, Here, i represents the i-th part of the nude mannequin, with a numerical range of [1, 10]. When i = 1, it indicates that the current part being calculated is the shoulder. Similarly, when i = 10, it indicates that the current part being calculated is the foot. ２ｉ V represents the volume of the initial air layer under the futon at the i-th location. １ｉ V represents the volume of the i-th part of a mannequin covered with a comforter, and V ０ｉ V represents the volume of the i-th part of the nude mannequin. ３ｉ The method for quantifying the fit of a comforter according to claim 1, further comprising the step of indicating the volume of the comforter body at the i-th part.

7. Based on the length of the air layer, the width of the air layer, the height of the highest point when the mannequin is lying supine, and the volume of the nude mannequin, the initial volume of the air layer under the futon is calculated using the following formula: V ２ =h×L １ ×L ２ -V ０ Here, V ２ represents the volume of the initial air layer under the futon, h is the height of the highest point when lying on your back, and L １ L is the length of the air layer. ２ V is the width of the air layer. ０ The method for quantifying the fit of a comforter according to claim 1, characterized in that represents the volume of a nude mannequin.

8. The steps described above include obtaining the thickness, length, and width of the comforter to be measured, and calculating the volume of the comforter itself, Three locations on the comforter to be measured were randomly selected, and the thickness d was measured. １ d ２ d ３ The thickness is measured and obtained, the average of the thickness at three points is calculated, and this is defined as the thickness d of the comforter being measured, and is expressed by the following formula: The volume V of the comforter body being measured. ３ It is expressed by the following equation: V ３ =l×w×d The method for quantifying the fit of a comforter according to claim 1, characterized in that, here, l represents the length of the comforter to be measured, and w represents the width of the comforter to be measured.

9. The actual volume of the air layer is calculated as follows by subtracting the volume of the nude mannequin and the volume of the comforter itself from the volume of the mannequin with the comforter on it: V ４ =V １ -V ０ -V ３ Here, V ４ V represents the actual air layer volume. １ V represents the volume of a mannequin with a comforter on it. ０ V represents the volume of a nude mannequin. ３ The method for quantifying the fit of a comforter according to claim 1, characterized in that represents the volume of the comforter itself.

10. The difference between the volume of the initial air layer under the comforter and the actual air layer volume, as a percentage of the total volume of the initial air layer under the comforter, is used as the comforter fit of the comforter being measured and is expressed by the following formula: Here, F represents the degree of comforter fit of the comforter being measured, and V ２ V represents the volume of the initial air layer under the futon. ４ The method for quantifying the fit of a comforter according to claim 9, characterized in that represents the actual volume of the air layer.

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