Office chair cushion design method, device and equipment

Abstract

The invention is applicable to the technical field of seat cushion design, and particularly relates to an office chair cushion design method, device and equipment, and the method comprises the following steps: detecting pressure data when a user sits on a pressure sensing layer of a cushion through the pressure sensing layer; according to the thigh area pressure data, the ischial area pressure data and the tailbone area pressure data, corresponding pressure heat maps are obtained respectively; according to the pressure heat maps corresponding to the thigh area pressure data, the ischium area pressure data and the tailbone area pressure data, design schemes of the thigh area, the ischium area and the tailbone area of the cushion are determined respectively; synthesizing the pressure heat maps corresponding to the thigh area pressure data, the ischial area pressure data and the tailbone area pressure data to obtain a total pressure heat map; and adjusting the design scheme according to the total pressure heat map. The problem that the traditional customized office chair cushion design only adopts static body shape data and cannot adapt to the action and posture change of individual physiological difference in a real use scene, so that the use comfort of a user is caused can be solved.

Description

Technical Field

[0001] This application belongs to the technical field of seat cushion design, and particularly relates to a design method, device and equipment for an office chair seat cushion. Background Art

[0002] With the accelerating pace of modern office work and the popularity of sedentary behavior, problems such as sciatic pain, coccyx discomfort, and lower limb numbness caused by office workers maintaining a sitting posture for a long time have become increasingly prominent. Most ordinary office chairs adopt unified specifications and standardized structures, making it difficult to take into account the body shape characteristics, sitting postures, and body pressure-sensitive areas of different users, easily resulting in local pressure concentration and support imbalance, thus affecting the comfort and long-term health of users.

[0003] For this reason, there are methods for customizing seat cushions in the prior art, which measure key dimensions such as the width of the pelvis, the width of the buttocks, and the circumference of the thigh root of the user, or use a 3D scanner to quickly obtain the surface model of the user's buttocks. However, this customization method does not consider the sitting postures of users in real office situations, and cannot achieve support adjustment for users with different sitting postures after long hours of fatiguing work, making it difficult to effectively solve the comfort problem. Summary of the Invention

[0004] The embodiments of this application provide a design method, device and equipment for an office chair seat cushion, which can solve the problem of user comfort caused by the fact that traditional customized office chair seat cushion design only adopts static body shape data and cannot adapt to the movements and postures of individual physiological differences in real use scenarios.

[0005] In a first aspect, a design method for an office chair seat cushion is applied to a test device. The test device includes a seat, a seat cushion, a pressure sensing layer, and an information processing device. The pressure sensing layer is disposed on the seat cushion of the seat, and the information processing device is electrically connected to the pressure sensing layer. The pressure sensing layer includes a thigh area, an ischial area, and a coccyx area, and the seat cushion correspondingly includes a thigh area, an ischial area, and a coccyx area. The method includes: Detecting pressure data when a user sits on the pressure sensing layer of the seat cushion through the pressure sensing layer; wherein, the pressure data includes thigh area pressure data, ischial area pressure data, and coccyx area pressure data; Respectively obtaining corresponding pressure heat maps according to the thigh area pressure data, the ischial area pressure data, and the coccyx area pressure data; Respectively determining design schemes for the thigh area, the ischial area, and the coccyx area of the seat cushion according to the pressure heat maps corresponding to the thigh area pressure data, the ischial area pressure data, and the coccyx area pressure data; Synthesizing the pressure heat maps corresponding to the thigh area pressure data, the ischial area pressure data, and the coccyx area pressure data to obtain a total pressure heat map; The design solution is adjusted according to the total pressure heat map.

[0006] The above technical solutions in the embodiments of the present application have at least the following technical effects: The office chair cushion design method provided in the embodiment of the present application detects the pressure of the thigh area, ischial area, and coccyx area of the cushion through a pressure sensing layer, and generates a corresponding pressure heat map. Based on the user's pressure heat map, the user's daily sitting posture can be truly understood, and the structure and hardness of the three areas of the cushion can be designed in a targeted manner to make the cushion better fit the user's actual sitting posture and body shape, and achieve support adjustment for users with different sitting habits after long periods of fatigue work, effectively alleviating the problems of buttock pain, coccyx discomfort, and leg numbness caused by long-term sitting. It can solve the problem of user comfort caused by the traditional customized office chair cushion design that only adopts static body shape data and cannot adapt to the changes in movement and posture of individual physiological differences in real usage scenarios.

[0007] In a second aspect, an embodiment of the present application provides an office chair cushion design device, which is applied to a test device. The test device includes a seat, a pressure sensing layer, and an information processing device. The pressure sensing layer is provided on the seat cushion of the seat. The information processing device is electrically connected to the pressure sensing layer. The pressure sensing layer includes a thigh area, a ischium area, and a coccyx area. The seat cushion correspondingly includes a thigh area, a ischium area, and a coccyx area. The office chair cushion design device includes: a detection unit, configured to detect pressure data of a user sitting on the pressure sensing layer of the seat cushion through the pressure sensing layer; wherein the pressure data includes pressure data of the thigh area, pressure data of the ischial area, and pressure data of the coccyx area; a generating unit, configured to obtain corresponding pressure heat maps according to the thigh area pressure data, the ischium area pressure data, and the coccyx area pressure data; a design unit for determining design schemes for the thigh area, the ischium area, and the coccyx area of the seat cushion, respectively, based on pressure heat maps corresponding to the thigh area pressure data, the ischium area pressure data, and the coccyx area pressure data; a synthesis unit, configured to synthesize the pressure heat maps corresponding to the thigh area pressure data, the ischial area pressure data, and the coccyx area pressure data to obtain a total pressure heat map; An adjustment unit is used to adjust the design scheme according to the total pressure heat map.

[0008] In a third aspect, an embodiment of the present application provides a testing device, including a seat, a pressure sensing layer, and an information processing device. The pressure sensing layer is disposed on the seat cushion of the seat, and the information processing device is electrically connected to the pressure sensing layer. The pressure sensing layer includes a thigh area, an ischium area, and a coccyx area, and the seat cushion correspondingly includes a thigh area, an ischium area, and a coccyx area. The information processing device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the method described in the first aspect above is implemented.

[0009] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the method described in the first aspect above is implemented. Description of the Drawings

[0010] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following-described drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0011] Figure 1 It is a schematic structural diagram of a testing device provided by an embodiment of the present application; Figure 2 It is a schematic physical diagram of a seat, a seat cushion, and a pressure sensor provided by an embodiment of the present application; Figure 3 It is a schematic flowchart of a method for designing an office chair seat cushion provided by an embodiment of the present application; Figure 4 It is a schematic diagram showing a state of pressure concentration at the leading edge of the thigh area in a pressure heat map corresponding to the pressure data of the thigh area provided by an embodiment of the present application; Figure 5 It is a schematic diagram showing a state of internal thigh pressure concentration in a pressure heat map corresponding to the pressure data of the thigh area provided by an embodiment of the present application; Figure 6 It is a schematic diagram showing a state of uneven pressure difference on the outer side of the thigh in a pressure heat map corresponding to the pressure data of the thigh area provided by an embodiment of the present application; Figure 7 It is a schematic diagram showing a state of concentrated ischium compression in a pressure heat map corresponding to the pressure data of the ischium area provided by an embodiment of the present application; Figure 8 It is a schematic diagram showing a state of asymmetric high-pressure imbalance in the ischium area in a pressure heat map corresponding to the pressure data of the ischium area provided by an embodiment of the present application; Figure 9 It is a schematic diagram showing the state of persistent high-pressure burning points in the ischial region in the pressure heat map corresponding to the ischial region pressure data provided by an embodiment of the present application; Figure 10 It is a schematic diagram showing the state of light pressure concentration on the coccyx in the coccyx region in the pressure heat map corresponding to the coccyx region pressure data provided by an embodiment of the present application; Figure 11 It is a schematic diagram showing the state of zonal high-pressure diffusion of the coccyx in the coccyx region in the pressure heat map corresponding to the coccyx region pressure data provided by an embodiment of the present application; Figure 12 It is a schematic diagram showing the state of posterior shift of the pressure center of the coccyx in the coccyx region in the pressure heat map corresponding to the coccyx region pressure data provided by an embodiment of the present application; Figure 13 It is a schematic diagram showing the state of high pressure in the femoral-ischial-coccygeal junction zone at the boundary in the pressure heat map corresponding to the overall pressure data of the thigh region, ischial region and coccyx region provided by an embodiment of the present application; Figure 14 It is a schematic diagram of the structure of the information processing device provided by an embodiment of the present application. Detailed implementation manners

[0012] Next, the technical solutions in the embodiments of the present application will be described in conjunction with the accompanying drawings in the embodiments of the present application.

[0013] In the related art, with the acceleration of the modern office work rhythm and the popularity of sedentary behaviors, problems such as ischial pain, coccyx discomfort, and lower limb numbness caused by sitting for a long time among office workers have become increasingly prominent. Research shows that most ordinary office chairs adopt unified specifications and standardized structures, which are difficult to take into account the body type characteristics, sitting postures, and body pressure-sensitive areas of different users, and are prone to cause local pressure concentration and support imbalance, thus affecting the comfort and long-term health of users.

[0014] Most existing customization methods only collect static body type data, such as using 3D scanning, and fail to comprehensively capture the changes in the movements and postures of users in real usage scenarios.

[0015] To solve the above problems, an embodiment of the present application provides a design method for an office chair cushion. In this method, pressure data is detected by a pressure sensing layer when a user sits on the pressure sensing layer of the cushion; wherein, the pressure data includes thigh area pressure data, ischial area pressure data, and coccyx area pressure data; corresponding pressure heat maps are obtained respectively according to the thigh area pressure data, ischial area pressure data, and coccyx area pressure data; design schemes for the thigh area, ischial area, and coccyx area of the seat are determined respectively according to the pressure heat maps corresponding to the thigh area pressure data, ischial area pressure data, and coccyx area pressure data; a total pressure heat map is obtained by synthesizing the pressure heat maps corresponding to the thigh area pressure data, ischial area pressure data, and coccyx area pressure data; and the design scheme is adjusted according to the total pressure heat map. It can solve the problem of the user's comfort caused by the inability of the traditional customized office chair cushion design to adapt to the movement and posture changes of individual physiological differences in the real use scenario.

[0016] The design method for an office chair cushion provided by an embodiment of the present application can be applied to a testing device. At this time, the testing device is the execution subject of the design method for an office chair cushion provided by an embodiment of the present application, and the specific type of the testing device is not limited in any way by an embodiment of the present application.

[0017] In some examples, the testing device includes a seat 101, a pressure sensing layer 102, a cushion 103, and an information processing device 700. The pressure sensing layer is disposed on the cushion, the information processing device is electrically connected to the pressure sensing layer, the pressure sensing layer includes a thigh area, an ischial area, and a coccyx area, and the cushion correspondingly includes a thigh area, an ischial area, and a coccyx area.

[0018] The pressure sensing layer is disposed on a fabric substrate, can conform to the curved surface contour of the cushion, and its surface is covered with a conductive layer or a moisture-proof layer for protecting the built-in sensing elements. The sensing elements are small pressure sensor units, including thin-film resistive sensors, piezoelectric sensors, or flexible capacitive sensors, and are arranged in a matrix manner. The pressure sensing layer is electrically connected to the information processing device and is used for collecting and transmitting pressure data.

[0019] The information processing device can specifically be any terminal device such as a mobile phone, a tablet computer, a notebook computer, a smart TV (such as a smart screen), an ultra-mobile personal computer (UMPC), or a handheld computer.

[0020] To better understand the design method for an office chair cushion provided by an embodiment of the present application, the following provides an exemplary introduction to the specific implementation process of the design method for an office chair cushion provided by an embodiment of the present application.

[0021] Figure 1The figure shows a schematic flowchart of a method for designing an office chair cushion provided by an embodiment of the present application. The method for designing an office chair cushion includes: S100, detecting pressure data when a user sits on the pressure sensing layer of the cushion through the pressure sensing layer; wherein, the pressure data includes thigh area pressure data, ischial area pressure data, and coccyx area pressure data.

[0022] For example, the pressure sensing layer is provided on a fabric substrate to ensure overall flexibility and conformity to the cushion surface. A conductive or moisture-proof surface layer is covered on the surface to protect the sensing elements. The pressure sensing layer is a small pressure sensor unit of 50 rows and 50 columns, such as a thin film resistor, piezoelectric, or flexible capacitive sensor, arranged in a matrix manner, and the pressure sensing layer is electrically connected to the information processing device.

[0023] For example, the thigh area pressure data refers to the thigh contact pressure value real-time collected through the pressure dot matrix in the area of the first row to the 20th row and the first column to the 50th column at the front of the cushion by the pressure sensing layer, and the corresponding color is mapped according to a preset pressure range, which is used to reflect the force distribution on the front edge, inner side, or outer side of the user's thigh.

[0024] The ischial area pressure data refers to the ischial contact pressure value real-time collected through the pressure dot matrix in the area of the 21st row to the 40th row and the first column to the 50th column at the front of the cushion by the pressure sensing layer, and the corresponding color is mapped according to a preset pressure range, which reflects the characteristics of concentrated compression, burning points, or unbalanced force on the ischial part.

[0025] The coccyx area pressure data refers to the thigh contact pressure value real-time collected through the pressure dot matrix in the area of the 41st row to the 50th row and the first column to the 50th column at the front of the cushion by the pressure sensing layer, and the corresponding color is mapped according to a preset pressure range, which is used to reflect the light pressure concentration, band diffusion, or pressure transfer in the user's coccyx area.

[0026] S200, respectively obtaining corresponding pressure heat maps according to the thigh area pressure data, ischial area pressure data, and coccyx area pressure data.

[0027] For example, among the pressure sensors of the small pressure sensor unit group layer of 50 rows and 50 columns, the pressure heat map refers to the pressure values real-time collected at each point on the 50×50 dot matrix, and the corresponding color identification according to the preset pressure range is mapped to the corresponding matrix position to generate a color image that intuitively reflects the force distribution of each area of the cushion.

[0028] It should be understood that obtaining the pressure heat map means that after processing the original pressure data according to the preset mapping rule, the corresponding pressure heat map is finally generated.

[0029] S300. Determine the design solutions for the thigh area, ischial area, and coccyx area of the seat cushion based on the pressure heat maps corresponding to the thigh area pressure data, ischial area pressure data, and coccyx area pressure data respectively. It should be understood that "determine" means to match the actually observed states, such as high-pressure concentration, symmetry imbalance, or zonal diffusion, etc., which are identified by the color distribution and pressure patterns in each partition of the pressure heat map, with the pre-defined pressure state categories, and accordingly select the corresponding regionalized design solutions.

[0030] It should be understood that "design solution" here refers to a complete set of structure and material optimization solutions customized for a specific area of the seat cushion according to the force characteristics reflected by the pressure heat map, including one of the geometric shapes to be added or adjusted, such as grooves, edging, wedge-shaped supports, etc., and one of the types of fillers or supports to be used, such as high-elastic gel, foams with different hardnesses, side support belts, etc., aiming to improve the comfort and support effect of the seat cushion in a targeted manner for different pressure states such as high pressure, imbalance, or diffusion.

[0031] S400. Synthesize the pressure heat maps corresponding to the thigh area pressure data, ischial area pressure data, and coccyx area pressure data to obtain the total pressure heat map. It should be understood that "synthesize" means to extract the edge dot matrix data between any two adjacent areas among the thigh area, ischial area, and coccyx area from the pressure heat maps corresponding to the thigh area pressure data, ischial area pressure data, and coccyx area pressure data, overlap and map each edge dot matrix data to the global coordinates of the seat cushion, and delete all other irrelevant dot matrix data to synthesize the total pressure heat map.

[0032] It should be understood that the "total pressure heat map" refers to a complete 50×50 dot matrix color heat map formed by combining the local pressure heat maps generated by the thigh area, ischial area, and coccyx area respectively, by extracting the edge dot matrix of adjacent areas and overlapping and mapping them in the global coordinate system of the seat cushion and removing redundant data, which is used to visually present the pressure conditions at the joints of each area of the entire seat cushion and provide a basis for overall design adjustment.

[0033] S500. Adjust the design solution according to the total pressure heat map.

[0034] It should be understood that "adjust" here means to optimize the local design solutions previously developed for each partition based on the overall force characteristics revealed in the total pressure heat map, so as to achieve a more uniform pressure distribution and better human body fit within the entire seat cushion. Specific operations may include adding a high-elastic gel layer at the intersection of the thigh, ischium, and coccyx, extending the width of the transition zone, or fine-tuning the filler layout of each partition, so that the partition solutions are adjusted from being independent of each other to being overall coordinated.

[0035] In some examples, the thigh region pressure data, the ischium region pressure data, and the coccyx region pressure data all include multiple pressure point data, and each pressure point data includes a pressure value and a corresponding position coordinate. S200. Obtaining corresponding pressure heat maps according to the thigh region pressure data, the ischium region pressure data, and the coccyx region pressure data respectively, including: S210. Comparing the pressure values of the respective pressure point data in the thigh region pressure data, the ischium region pressure data, and the coccyx region pressure data with a preset pressure range to obtain the identification colors corresponding to the respective pressure point data; wherein the preset pressure range includes multiple different pressure intervals, and each pressure interval corresponds to a kind of identification color.

[0036] It can be understood that the preset pressure range refers to a series of pressure intervals artificially defined in advance before mapping the original pressure data into colors, which are used to distinguish four levels of low pressure, medium pressure, sub-high pressure, and high pressure.

[0037] For example, in order to take into account the range of the sensor and the characteristics of the human sitting pressure, it can be set that the low-pressure interval is 0–20 kPa, the medium-pressure interval is 20–40 kPa, the sub-high-pressure interval is 40–60 kPa, and the high-pressure interval is 60–90 kPa.

[0038] It can be understood that the respective corresponding identification colors refer to the color codes used to visually distinguish different pressure intervals in the pressure heat map: The system pre-specifies a color for each pressure level such as low pressure, medium pressure, sub-high pressure, and high pressure. When the real-time pressure value of a certain sensing point falls into this level, it is displayed in the heat map with the "identification color" corresponding to this level.

[0039] For example, the low-pressure interval of 0–20 kPa is displayed with light blue and dark blue as the identification colors. The medium-pressure interval of 20–40 kPa is displayed with cyan and yellow-green as the identification colors. The sub-high-pressure interval of 40–60 kPa is displayed with orange-yellow and orange-red as the identification colors. The high-pressure interval of 60–90 kPa is displayed with red and dark red as the identification colors.

[0040] S220. Generating pressure heat maps corresponding to the thigh region pressure data, the ischium region pressure data, and the coccyx region pressure data according to the identification colors corresponding to the respective pressure point data in the thigh region pressure data, the ischium region pressure data, and the coccyx region pressure data and the corresponding position coordinates; wherein the pressure heat map includes the color identification points corresponding to the respective pressure point data in the corresponding thigh region pressure data, ischium region pressure data, or coccyx region pressure data.

[0041] It can be understood that the position coordinates refer to the relative positions of each sensing point on the seat cushion in the M×N pressure matrix, identified by row numbers and column numbers. It is usually expressed in the form of (i,j): i represents the i-th row (from front to back or from top to bottom), and j represents the j-th column (from left to right). The two together determine the accurate "position coordinates" of the sensing point in the global coordinate system, so as to correspond to its pressure value and thermal image pixel.

[0042] For example, in a 50×50 pressure matrix, the 30th row and the 30th column are represented in the form of (30,30).

[0043] It can be understood that the color identification point refers to the pressure magnitude sensed by a single sensor point, that is, a position coordinate, in the pressure thermal maps corresponding to the pressure data in the thigh area, the ischial area, and the coccyx area. Each color identification point corresponds to a specific position and a specific pressure value, and the relative intensity of the pressure is expressed by the depth or hue change of the color.

[0044] In some examples, S100 detects the pressure data when the user sits on the pressure sensing layer of the seat cushion through the pressure sensing layer, including: S110, detects the pressure data when the user sits on the pressure sensing layer of the seat cushion every first preset time interval through the pressure sensing layer. And the duration of each detection of the pressure data when the user sits on the pressure sensing layer of the seat cushion is the second preset time interval, and the frequency of detecting the pressure data when the user sits on the pressure sensing layer of the seat cushion within the second preset time interval is a fixed acquisition frequency; wherein, the value range of the first preset time interval is 10 - 40 minutes; the value range of the second preset time interval is 5 - 10 minutes; the fixed acquisition frequency is 1 - 2 seconds each time.

[0045] It can be understood that detecting once every first preset time interval means that the pressure sensing layer periodically performs a pressure data acquisition according to a preset time interval. The second preset time interval refers to the time length used to set the duration of each continuous pressure data acquisition. The fixed acquisition frequency refers to the rate at which the sensor samples the pressure at a constant time interval.

[0046] For example, in the thigh area, the ischial area, and the coccyx area pressure thermal maps, pressure data is collected with a period of 30 minutes respectively. Each collection lasts for 5 minutes, and the acquisition frequency is once every 1 s. Then the data of 5 minutes is aggregated into a pressure thermal map. The total measurement duration of the pressure data acquisition is 8 h. Finally, 16 pressure thermal maps and a total of 80 minutes of data are collected for the thigh area, the ischial area, and the coccyx area respectively, and are recorded as the thigh area pressure thermal maps s1, s2, s3....s16, the ischial area pressure thermal maps t1, t2, t3.....t16, and the coccyx area pressure thermal maps m1, m2, m3...m16.

[0047] In some examples, determining the design solution for the thigh area of the seat according to the pressure heat map corresponding to the thigh area pressure data in step S300 includes: S310. When it is determined from the pressure heat map corresponding to the thigh area pressure data that there is a state of concentrated pressure at the front edge in the thigh area, determine the first thigh area design solution; wherein, the first thigh area design solution is used to indicate that a flexible arc-shaped rolled edge with a radius of a is provided at the front edge of the thigh area of the seat cushion, and the inner side of the flexible arc-shaped rolled edge is integrally formed with the surface layer of the seat cushion or fixed by hot melt bonding; It can be understood that the state of concentrated pressure at the front edge means that in the pressure heat map of the thigh area, a high-pressure color identification area of greater than or equal to a 3×3 dot matrix continuously appears in multiple frames in the central area at the front end of the seat cushion, and the high-pressure area appears simultaneously at symmetric positions on the left and right, indicating that the front edge of the user's thigh bears significant and concentrated pressure during the sitting posture. For example, in a 50×50 pressure dot matrix, in the thigh area formed by rows 1 to 20 and columns 1 to 50, when a high-pressure color identification area appears in columns 10 to 30 and high-pressure color identification areas continuously appear in multiple frames at symmetric positions in the left area and the right area at the front edge of the thigh area, it is determined that the thigh area is in a state of concentrated pressure at the front edge; It can be understood that "used to indicate" setting a flexible arc-shaped rolled edge with a radius of a at the front edge of the thigh area of the seat cushion, and the inner side of the flexible arc-shaped rolled edge is integrally formed with the surface layer of the seat cushion or fixed by hot melt bonding. It means that this design solution serves as a specific guiding instruction, and when the corresponding situation occurs, it should clearly instruct the production or engineering team to add a flexible arc-shaped rolled edge with a radius of a at the front edge of the thigh area of the seat cushion, and stipulate that the rolled edge is fixed to the surface layer by integral molding or hot melt bonding.

[0048] It can be understood that setting a flexible arc-shaped rolled edge with a radius of a at the front edge means adding a soft edge guard strip with a circular cross-section and a curvature radius of a at its edge.

[0049] For example, on a seat cushion corresponding to a pressure sensing layer with a 50×50 dot matrix and an adjacent dot matrix spacing of 5 mm, the front edge of the thigh area corresponds to the area of rows 1–20 and columns 1–50. For the design requirement of this area "set a flexible arc-shaped rolled edge with a radius of a = 10 mm at the front edge of the thigh area of the seat cushion", it means to completely wrap the front edge with a soft TPU rolled edge with a radius of 10 mm and a width of about two dot matrix spacings of 10 mm; the inner side of the rolled edge is either integrally formed with the seat cushion surface layer during injection molding or firmly bonded to the surface layer with the TPU rolled edge by hot melt bonding in a subsequent process, so as to ensure a smooth transition at the front edge and avoid cracking and falling off.

[0050] S320. When it is determined from the pressure heat map corresponding to the thigh area pressure data that there is a state of concentrated inner thigh pressure in the thigh area, determine the second thigh area design solution. The second thigh area design solution is used to indicate that side support belts are added on both sides near the perineum on the inner side of the thigh area of the seat cushion. The material of the side support belt is PU, TPU, TPE, or high-strength composite fiber. It can be understood that the state of concentrated inner thigh pressure means that in the pressure heat map, there are consecutive multiple frames of high-pressure or sub-high-pressure color identification areas with an area greater than or equal to 3×3 in the inner area of the thigh area of the seat cushion, and similar high-pressure color areas also appear upstream and downstream of this area, indicating that the force on the inner side of the user's thigh is concentrated and higher than other surrounding parts.

[0051] It can be understood that adding side support belts on both sides near the perineum on the inner side of the thigh area of the seat cushion, where the material of the side support belt is PU, TPU, TPE, or high-strength composite fiber, means that when the force on the inner side of the thigh is concentrated, that is, near the roots of the two legs and the perineum, a side support belt for lateral support should be added on each side of the same area of the seat cushion to disperse and support the pressure on the inner side of the thigh. The side support belt is a flexible strip-shaped reinforcement piece pasted or sewn along a specific area of the seat cushion (such as the inner side of the thigh), usually made of PU, TPU, TPE, or high-strength composite fiber, used to provide lateral support and pressure dispersion when the local force is concentrated, prevent discomfort caused by the seat cushion edge being too soft or too hard, and enhance the overall stability and fit of the seat cushion.

[0052] For example, on a seat cushion corresponding to a pressure sensing layer with a 50×50 dot matrix and an adjacent dot matrix spacing of 5 mm, the concentrated area on the inner thigh is from the 8th row to the 23rd row and from the 15th column to the 28th column. When designing, a TPU side support belt with a width of 10 mm and a thickness of 2 mm can be pasted on each of the positions from the 8th row to the 15th row, from the 22nd column to the 24th column in the left area and from the 8th row to the 15th row, from the 26th column to the 28th column in the right area, and fixed to the surface layer with hot melt adhesive; it conforms to the curve of the thigh root and effectively disperses the inner pressure.

[0053] S330. When it is determined from the pressure heat map corresponding to the thigh area pressure data that there is a state of uneven pressure difference on the outer thigh in the thigh area, determine the third thigh area design solution. The third thigh area design solution is used to indicate that based on the high-pressure color identification area composed of color identification points shown in the pressure heat map, the first filler with a thickness of d1 is used at the position corresponding to the high-pressure color identification area in the left area of the thigh area of the seat cushion, and the second filler with a thickness of d2 is padded below the position corresponding to the high-pressure color identification area in the right area of the thigh area of the seat cushion. Among them, the identification colors in the high-pressure color identification area are the first high-pressure color and the second high-pressure color; the pressure corresponding to the second high-pressure color is greater than the pressure corresponding to the first high-pressure color.

[0054] It can be understood that the first high-pressure color refers to the color marked by red in the pressure range of 60 - 75 kPa within the high-pressure range of 60 - 90 kPa. The second high-pressure color refers to the color marked by dark red in the pressure range of 75 - 90 kPa within the high-pressure range of 60 - 90 kPa.

[0055] It can be understood that the high-pressure color identification area refers to the area in the pressure heat map where the dot matrix on a continuous area of 3×3 or more sensors is marked with a high-pressure gear color, such as red or dark red corresponding to the preset pressure range of 60 - 90 kPa, to visually identify the area on the seat surface that locally bears a significantly larger pressure.

[0056] For example, for a seat cushion composed of a 50×50 dot matrix with a spacing of 5 mm between any adjacent dot matrices, in a certain heat map, if red appears in rows 5 to 15 and columns 10 to 20, it corresponds to the pressure range of 60 - 75 kPa, and if dark red appears in rows 6 to 14 and columns 30 to 40, it corresponds to the pressure range of 75 - 90 kPa. Then, at the position of rows 5 to 15 and columns 10 to 20 on the left side of the thigh area of the seat cushion, the original filling is replaced with a 10-mm thick high-resilience polyurethane foam, slow-rebound polyurethane foam, or open-cell breathable foam; while under the seat cushion position corresponding to the dark red color identification area in rows 6 to 14 and columns 30 to 40 on the right side, an additional 15-mm thick high-elastic silicone sheet or transparent gel block is superimposed. This allows the medium-high-pressure area on the left to obtain uniform cushioning, and the higher-pressure points on the right to receive thicker support.

[0057] It can be understood that in the pressure heat map corresponding to the thigh area data, two or three of the above-described pressure concentration states at the front edge of the thigh area, inner thigh pressure concentration state, and uneven pressure difference state on the outer thigh may occur simultaneously.

[0058] In some examples, the pressure sensing layer is a pressure dot matrix of M rows and N columns, and the corresponding pressure heat map is a dot map of identification colors presenting multiple identification colors within the pressure dot matrix of M rows and N columns, where M = N = 50k and k is a positive integer; the distance between every two adjacent dot matrices in the pressure dot matrix is 5 - 10 mm; in step S310, determining that the front edge pressure concentration state appears in the thigh area based on the pressure heat map corresponding to the thigh area pressure data includes: S311. When, in the pressure heat map corresponding to the thigh area pressure data, within the thigh area formed by rows 1 to 2M / 5 and columns 1 to N, there is a high-pressure color identification area in columns N / 5 to 3N / 5, and there are multiple consecutive frames of concentrated high-pressure color identification areas symmetrically in the left area of the front edge of the thigh area and the right area of the front edge of the thigh area, it is determined that there is a concentrated front-edge pressure state in the thigh area; wherein, the high-pressure color identification area is an area dot matrix with an area greater than or equal to 3×3; the high-pressure color identification area represents a pressure range of 60-90 kPa; the identification colors in the high-pressure color identification area are the first high-pressure color and the second high-pressure color; the pressure corresponding to the second high-pressure color is greater than the pressure corresponding to the first high-pressure color; the left area is the intersection area located in rows 1 to 3M / 50 and columns N / 5 to 14N / 50, and the right area is the intersection area located in rows 1 to 3M / 50 and columns 7N / 10 to 39N / 50.

[0059] It can be understood that the left area of the front edge and the right area of the front edge refer to the small symmetric areas at both ends of the front edge of the thigh area of the seat cushion, used to monitor whether there is high-pressure concentration on both sides of the front edge.

[0060] For example, for a seat cushion composed of a 50×50 dot matrix with a distance of 5 mm between any two adjacent dot matrices, the thigh area ranges from row 1 to row 20 and columns 1 to 50; the left column range: rows 1 to 20 and columns 1–14; the right column range: rows 1 to 20 and columns 37–50; when there are high-pressure color identification areas with an area greater than or equal to 3×3 dot matrices in these two areas for 30 consecutive frames, it can be determined that there is a concentrated front-edge pressure state. Figure 4 It is a screenshot in the pressure heat map of the thigh area, showing a partial schematic diagram of the concentrated front-edge pressure state. The part composed of the red area in the figure is the high-pressure color identification area.

[0061] In some examples, the pressure sensing layer is a pressure dot matrix of M rows and N columns, and the corresponding pressure heat map is a dot map with multiple identification colors presented within the pressure dot matrix of M rows and N columns, where M = N = 50k and k is a positive integer; the distance between every two adjacent dot matrices in the pressure dot matrix is 5-10 mm; in step S320, determining that there is a concentrated thigh internal pressure state in the thigh area according to the pressure heat map corresponding to the thigh area pressure data includes: S321, in the pressure heat map corresponding to the thigh area pressure data detected, in the thigh area formed by the 1st row to the 2M / 5th row and the 1st column to the Nth column, the intersection area of the 8th / 50th row to the 15th / 50th row and the 23rd / 50th column to the 28th / 50th column appears in multiple frames of continuous concentration. In the thigh area, the 1st row to the 7th / 50th row or the 16th / 50th row to the 2M / 5th row, and the 1st column to the 22nd / 50th column or the 29th / 50th column to the Nth column appear in the second high pressure color identification area. When a secondary high pressure color marking area appears simultaneously in the column and two high pressure color marking areas appear on the inner side of the thigh area for multiple frames continuously, it is determined that the thigh area is in a state of concentrated thigh pressure; wherein, the secondary high pressure color marking area has a range greater than or equal to a 3×3 area dot matrix; multiple frames of continuous concentrated appearance means that the number of frames in which it appears is greater than or equal to 30 frames; the secondary high pressure color marking area represents a pressure range of 40-60kPa; the marking colors in the secondary high pressure color marking area are the first high pressure color and the second high pressure color; the pressure corresponding to the second high pressure color is greater than the pressure corresponding to the first high pressure color; the appearance of two high pressure color marking areas on the inner side of the thigh area refers to the high pressure color marking area appearing in the intersection area of the 1M / 5 to 12M / 50 rows and the 24N / 50 to 25N / 50 columns on the left, and the high pressure color marking area appearing in the intersection area of the 10M / 50 to 12M / 50 rows and the 26N / 50 to 27N / 50 columns on the right.

[0062] It can be understood that the sub-high pressure color identification area refers to the area in the pressure heat map where the sub-high pressure range of 40-60 kPa corresponds to a color such as yellow to orange and the continuous area on the map is greater than or equal to 3×3 dot matrix. It is used to identify the area on the seat cushion surface that is subject to medium to high pressure but has not yet reached the highest pressure level, so as to distinguish it from the medium pressure area and the high pressure area.

[0063] It can be understood that the first high pressure color refers to the 40-60kPa secondary high pressure color identification range, and the 40-50kPa pressure range is displayed with orange as the identification color. The second high pressure color refers to the 50-60kPa high pressure range, which is displayed with orange-red as the identification color.

[0064] For example, on a seat cushion composed of a pressure-sensing layer with a 50×50 dot matrix and an arbitrary dot matrix spacing of 5mm, if the small area in rows 8 to 15 and columns 23 to 28 in the thermal map shows a sub-high pressure color identification area for ≥30 consecutive frames, and the left area on both sides of the sub-high pressure color identification area, rows 10 to 12 and columns 24 to 25, and the right area, rows 10 to 12 and columns 26 to 27, also show sub-high pressure color identification or high pressure color identification with an area greater than or equal to 3×3 dot matrix for 30 consecutive frames, it can be determined that the inner thigh pressure is concentrated. Figure 5This screenshot from the thigh pressure heat map shows a partial schematic diagram of the concentrated inner thigh pressure. The red and dark red areas in the image are high-pressure areas, while the orange and orange-red areas are sub-high-pressure areas. This indicates that the inner thighs are subjected to significantly higher pressure than the surrounding thigh areas, necessitating the installation of side braces or softer padding in these areas to disperse the pressure.

[0065] In some examples, the pressure sensing layer is a pressure dot matrix with M rows and N columns, and the corresponding pressure heat map is a color dot map showing multiple identification colors within the pressure dot matrix with M rows and N columns, where M=N=50k, and k is a positive integer; the distance between each two adjacent dots in the pressure dot matrix is 5-10 mm; in step S330, determining that a thigh pressure differential state exists in the thigh region based on the pressure heat map corresponding to the thigh region pressure data includes: S331, in the pressure heat map corresponding to the thigh area pressure data detected, in the thigh area formed by the 1st row to the 2M / 5th row and the 1st column to the Nth column, the sub-high pressure color identification area appears in multiple frames continuously and concentratedly at the intersection of the 10th row to the 12th row and the 2nd column to the 4th column on the left side of the thigh area. The medium pressure color identification area appears in multiple frames continuously and concentratedly at the intersection of the 8th row to the 10th row and the 47th column to the 49th column on the right side of the thigh area. The rest of the thigh area dot matrix, the 1st row to the 9th row or the 13th row to the 2nd row, and the 5th row to the 46th column. In the column, when the medium pressure color identification area appears, it is determined that a thigh pressure difference state occurs in the thigh area; among them, the medium pressure color identification area has a range greater than or equal to a 3×3 area dot matrix; the continuous and concentrated appearance of multiple frames refers to the number of frames that appear is greater than or equal to 30 frames; the medium pressure color identification area represents a pressure range of 20-40kPa; the identification colors in the medium pressure color identification area are the first medium pressure color and the second medium pressure color; the pressure corresponding to the second medium pressure color is greater than the pressure corresponding to the first medium pressure color.

[0066] The medium-pressure color-coded area is defined as a continuous, cyan-green or yellow-green area on the pressure heat map corresponding to medium pressures of 20–40 kPa. This area, which is greater than or equal to a 3×3 dot matrix, identifies areas on the seat cushion surface subject to medium pressure. These areas represent areas where the user's contact pressure is both higher than the low-pressure area and lower than the sub-high-pressure color-coded area.

[0067] It is understood that the first medium pressure color refers to the medium pressure range of 20-40 kPa, in which the pressure range of 20-40 kPa is displayed with cyan as the identification color. The second medium pressure color refers to the pressure range of 30-40 kPa, in which the pressure range of 30-40 kPa is displayed with yellow-green as the identification color.

[0068] For example, on a seat cushion composed of a pressure-sensing layer with a 50×50 dot matrix and an arbitrary dot matrix spacing of 5mm, if the 3×3 area from the 10th to the 12th rows and the 2nd to the 4th columns in the pressure heat map on the left side of the thigh area shows a medium-pressure color-marked area for 30 consecutive frames, and at the same time, the 3×3 area from the 8th to the 10th rows and the 47th to the 49th columns on the right side of the thigh area shows a medium-pressure color-marked area for 30 consecutive frames, and the rest of the dot matrix in the thigh area also shows a medium-pressure color-marked area, it can be determined as a pressure difference state on the outer side of the thigh. Figure 6 This screenshot from the thigh pressure heat map shows a partial schematic diagram of the pressure differential on the outer thigh. The red and dark red areas in the image are high-pressure areas, the orange-yellow and orange-red areas are medium-pressure areas, and the cyan and yellow-green areas are medium-pressure areas. This indicates that one side of the thigh bears significantly more weight than the other, necessitating the installation of stiffer padding or support structures beneath the high-pressure side and thicker, more flexible padding on the low-pressure side to achieve balanced pressure distribution.

[0069] In some examples, determining a design scheme for the ischial region of the seat according to a pressure heat map corresponding to the ischial region pressure data in step S300 includes: S340: When it is determined that a concentrated ischial pressure state exists in the ischial region based on the pressure heat map corresponding to the ischial region pressure data, determining a first ischial region design solution; wherein the first ischial region design solution indicates providing a buffer groove with a depth of d in the ischial region of the seat cushion; It can be understood that concentrated ischial compression refers to the long-term excessive pressure on the area, which may cause discomfort or tissue damage.

[0070] It can be understood that the instruction to open a buffer groove with a depth of d in the ischial area of the seat cushion means that when the pressure heat map shows that there is an obvious and continuous high-pressure area in the ischial area, a structural adjustment plan is proposed based on this state, that is, a concave structure with a depth of d is dug inside the seat cushion in this area to relieve local pressure concentration.

[0071] For example, if a high-pressure colored dot appears continuously for more than 30 seconds between rows 25 to 30 and columns 23 to 27 on a seat cushion with a 50×50 grid and 5mm spacing between adjacent dots, a corresponding pressure sensor groove measuring 30 mm × 25 mm and 8 mm deep will be created in the seat foam layer in that area, corresponding to the detection zone. The groove can be a shallow arc or a flat bottom. The concave area allows the pressure area to sink, thereby achieving optimal pressure evacuation and distribution, improving comfort and safety.

[0072] S350, when it is determined that there is an asymmetric high - pressure imbalance state in the ischial region based on the pressure heat map corresponding to the pressure data in the ischial region, determine the second ischial region design solution; wherein, the second ischial region design solution is used to indicate that the seat cushion fabric in the ischial region of the seat cushion is set as a multi - material layered structure, and a softer material is used at the center of the ischial region, and a softer material is used at the corresponding position on the seat cushion of the high - pressure center point on the color identification of the ischial region recognized based on the pressure heat map. Taking the corresponding position of this center point as the origin, towards the surrounding pressure heat Figure 6 The material hardness gradually transitions to a harder material at the positions corresponding to the 6×6 dot matrix coverage area; It can be understood that the occurrence of the asymmetric high - pressure imbalance state in the ischial region means that in the left and right ischial regions of the seat cushion, the pressure borne by one side for a long time is significantly higher than that of the other side, and this high - pressure state persists, indicating that there is an obvious shift in the user's body center of gravity, resulting in uneven force on both sides of the ischium and forming an imbalance. In an ideal sitting position, the left and right ischia should evenly share the body weight.

[0073] It can be understood that the second ischial region design solution is used to indicate that the seat cushion fabric in the ischial region of the seat cushion is set as a multi - material layered structure, and a softer material is used at the center of the ischial region, and a softer material is used at the corresponding position on the seat cushion of the high - pressure center point on the color identification of the ischial region recognized based on the pressure heat map. Taking the corresponding position of this center point as the origin, towards the surrounding pressure heat Figure 6 The material hardness gradually transitions to a harder material at the positions corresponding to the 6×6 dot matrix coverage area; For example, on a seat cushion corresponding to a pressure sensor with a 50×50 grid dot matrix, where the distance between any adjacent dot matrices is 5mm, the high - pressure center point of the ischial region recognized by the pressure heat map falls on the 28th row and 25th column. Taking this point as the origin, a gradual change in material hardness can be achieved in the surrounding 6×6 dot matrix area, that is, from the 25th row to the 30th row and from the 23rd column to the 28th column. Memory foam is placed at the center point of the 28th row and 25th column. In the first annular range adjacent to the center, that is, within the 3×3 dot matrix range, from the 27th row to the 29th row and from the 24th column to the 26th column, high - resilience polyurethane foam with a density of 45 kg / m³ is selected. For the outer - edge, that is, the entire border dot matrix of the 6×6 area, from the 25th row to the 30th row and from the 23rd column to the 28th column, high - density polyurethane foam with a density of 60 kg / m³ is used. This enables the material hardness to gradually increase from the ischial high - pressure center outwards, providing both soft fitting in the most core area and sufficient support at the edge, realizing a smooth transition of local pressure.

[0074] S360. When it is determined that there is a state of persistent high - pressure burning points in the ischial region based on the pressure heat map corresponding to the ischial region pressure data, determine the third ischial region design plan. Among them, the third ischial region design plan is used to indicate that in the high - pressure color - marked area of the ischial region identified based on the pressure heat map, the corresponding position on the ischial region of the seat cushion is replaced with a medium - hardness elastic material as a support transition area; the surface material of the remaining color - marked areas uses PU fabric or ice silk mesh fabric.

[0075] It can be understood that the state of persistent high - pressure burning points in the ischial region means that in the pressure heat map, the entire ischial region shows a large - area sub - high - pressure color mark and stably appears in consecutive frames greater than or equal to 30 frames. At the same time, a small number of high - pressure color marks occur sporadically in two small ranges on the left and right respectively, but the total number of these highest - pressure points is less than three or the occurrence time is less than 30 frames. This state indicates that the force on the ischial region is not only high in intensity but also continuous, which is likely to cause local burning pain and requires material or structural adjustment to disperse and relieve the pressure.

[0076] It can be understood that the medium - hardness elastic material is a polyurethane elastomer with a density of 50 kg / m³. For example, on a seat cushion corresponding to a pressure sensor composed of a 50×50 grid dot matrix with a distance of 5 mm between any adjacent dot matrices, if the pressure heat map shows that the high - pressure color - marked area continuously appears in rows 25 to 30 and columns 22 to 27 of the ischial region, then within a 30 mm×30 mm area of the seat cushion corresponding to this color - marked area, the original foam is replaced with a medium - hardness polyurethane elastomer with a density of 50 kg / m³ to form a support transition area; while in the remaining area of the ischial region, the surface material remains PU fabric or ice silk mesh fabric to ensure consistent overall touch and both breathability and wear resistance. This enables the core high - pressure area to obtain stronger support and resilience, and the surrounding area will not cause discomfort due to material mutation.

[0077] In some examples, the pressure - sensing layer is a pressure dot matrix of M rows and N columns, and the corresponding pressure heat map is a dot map with multiple marked colors presented within the pressure dot matrix of M rows and N columns, where M = N = 50k, and k is a positive integer; the distance between the corresponding positions of every two adjacent sensing points in the pressure - sensing layer dot matrix on the seat cushion is 5 - 10 mm; in step S340, determining that there is a state of concentrated ischial compression in the ischial region based on the pressure heat map corresponding to the ischial region pressure data includes: S341. In the pressure heat map corresponding to the pressure data in the ischial region, within the ischial region formed by the 21M / 50th to 40M / 50th rows and the 1st to Nth columns, if a multi-frame continuous concentration of high-pressure color identification areas is detected in the cross-region of the 28M / 50th to 30M / 50th rows and the 24N / 50th to 26N / 50th columns, sub-high-pressure color identification areas appear in multiple locations in the 27M / 50th to 31M / 50th rows and the 22N / 50th to 28N / 50th columns, and a large-area medium-pressure color identification area is detected in the dot matrix of the 21M / 50th to 27M / 50th rows or the 31M / 50th to 40M / 50th rows and the 1st to 23N / 50th columns, then a concentrated ischial compression state is determined; where the range of the high-pressure color identification area is greater than or equal to a 3×3 area dot matrix; the appearance of sub-high-pressure color identification areas in multiple locations means that there are more than three areas that meet the identification color of the sub-high-pressure color identification area, and the range is greater than or equal to a 3×3 area dot matrix; the appearance of a large-area medium-pressure color identification area means that there are at least five areas that meet the identification color of the sub-high-pressure color identification area, and the range is greater than or equal to a 3×3 area dot matrix.

[0078] For example, for a seat cushion corresponding to a pressure sensing layer composed of a 50×50 grid dot matrix with a spacing of 5 mm between any adjacent dot matrices, within the ischial region formed by the 21st to 40th rows and the 1st to 50th columns, a high-pressure color identification area with an area greater than or equal to a 3×3 dot matrix continuously appears in multiple frames in the small area at the intersection of the 28th to 30th rows and the 24th to 26th columns at the center of the ischial region of the seat cushion, and at the same time, sub-high-pressure color identification areas appear in the surrounding area, that is, the 27th to 31st rows and the 22nd to 28th columns, indicating that the force on the user's ischial region is highly concentrated and the pressure peak is significant, and a concentrated ischial compression state is determined. Figure 7 This is a screenshot of the pressure heat map in the ischial region, showing a partial schematic diagram of the concentrated ischial compression state. In the figure, the part composed of red and dark red areas is the high-pressure color identification area, the part composed of orange-yellow and orange-red is the sub-high-pressure color identification area, and the part composed of cyan and yellow-green is the medium-pressure color identification area. It indicates that it is likely to cause local discomfort or tissue compression, and a buffer groove needs to be opened in this area or replaced with a softer material to disperse the pressure.

[0079] In some examples, the pressure sensing layer is a pressure dot matrix of M rows and N columns, and the corresponding pressure heat map is a dot map of identification color points presenting multiple identification colors within the pressure dot matrix of M rows and N columns, where M = N = 50k and k is a positive integer; in the pressure sensing layer dot matrix, the distance between the positions corresponding to every two adjacent sensing points on the seat cushion is 5 - 10 mm; in step S350, determining that there is a persistent high-pressure burning point state in the ischial region according to the pressure heat map corresponding to the pressure data in the ischial region includes: S351. In the pressure heat map corresponding to the sciatic region pressure data, within the sciatic region formed by rows 21M / 50 to 40M / 50 and columns 1 to N, a large area of sub-high-pressure color identification areas continuously appears concentrated in multiple frames. The distribution of the color identification areas in the pressure heat map is significantly uneven. A high-pressure color identification area is detected in the cross-region of rows 25M / 50 to 29M / 50 and columns 8N / 50 to 12N / 50 on the left side, and a sub-high-pressure color identification area appears in the cross-region of rows 30M / 50 to 34M / 50 and columns 38N / 50 to 42N / 50 on the right side. In the dot matrix of rows 21M / 50 to 24M / 50 and columns 1 to 7N / 50, as well as rows 35M / 50 to 40M / 50 and columns 13N / 50 to 37N / 50, a medium-pressure color identification area continuously appears concentrated in multiple frames. When a small number of sub-high-pressure color identification areas or high-pressure color identification areas appear in a local area, a persistent high-pressure burning point state in the sciatic region is determined; among them, a large area of sub-high-pressure color identification areas means that multiple areas with a size greater than or equal to a 6×6 area dot matrix appear; a small number of sub-high-pressure color identification areas or high-pressure color identification areas means that the total number of sub-high-pressure color identification areas or high-pressure color identification areas with a size greater than or equal to a 3×3 area is less than three, or the number of frames in which either a sub-high-pressure color identification area or a high-pressure color identification area appears within the detection area is less than 30 frames.

[0080] For example, when on a seat cushion composed of a pressure sensing layer with a 50×50 dot matrix and an adjacent point spacing of 5 mm, within the sciatic region formed by rows 21 to 40 and columns 1 to 50, if a yellow area sub-high-pressure color identification area with a quantity greater than or equal to 3 and an area greater than or equal to a 6×6 dot matrix continuously appears in rows 21 - 40 and columns 1 - 50 in multiple frames, and at the same time, a high-pressure color identification area appears in rows 25 to 29 and columns 8 to 12 in the left area, a sub-high-pressure color identification area appears in rows 30 to 34 and columns 38 to 42 in the right area, and the other areas of rows 21 to 24 and columns 1 to 7, rows 35 to 40 and columns 13 to 37 are mainly medium-pressure color identification areas, and the total number is less than three, or the number of frames in which either a sub-high-pressure color identification area or a high-pressure color identification area appears within the detection area is less than 30 frames, then a persistent high-pressure burning point state in the sciatic region is determined. Figure 8 It is a screenshot in the pressure heat map of the sciatic region, showing a partial schematic diagram of an asymmetric high-pressure imbalance state. The part composed of red and dark red areas in the figure is the high-pressure color identification area, the part composed of orange-yellow and orange-red is the sub-high-pressure color identification area, and the part composed of cyan and yellow-green is the medium-pressure color identification area.

[0081] In some examples, the pressure sensing layer is a pressure dot matrix of M rows and N columns, and the corresponding pressure heat map is a dot map of identification color points presenting multiple identification colors within the pressure dot matrix of M rows and N columns, where M = N = 50k and k is a positive integer; the distance between the positions corresponding to every two adjacent sensing points in the pressure sensing layer dot matrix on the seat cushion is 5 - 10 mm; in step S360, determining that the ischial region has an asymmetric high-pressure imbalance state according to the pressure heat map corresponding to the ischial region pressure data includes: S361. In the pressure heat map corresponding to the detected ischial region pressure data, within the ischial region formed by the 21M / 50th row to the 40M / 50th row and the 1st column to the Nth column, when a local small-range high-pressure color identification area appears continuously and concentratedly in multiple frames in the cross-region of the 29M / 50th row to the 31M / 50th row and the 24N / 50th column to the 26N / 50th column, and in the surrounding region of the 28M / 50th row to the 32M / 50th row and the 22N / 50th column to the 28N / 50th column, a sub-high-pressure color identification area appears multiple times, and in the remaining area of the ischial region, that is, the 21M / 50th row to the 28M / 50th row or the 32M / 50th row to the 40M / 50th row, and the 1st column to the 23N / 50th column or the 27N / 50th column to the 50N / 50th column of the dot matrix, when a medium-pressure color identification area appears continuously and concentratedly in multiple frames, it is determined as an asymmetric high-pressure imbalance in the ischial region; among them, the continuous and concentrated appearance of a local small-range high-pressure color identification area in multiple frames means that the number of frames in which the high-pressure color identification area appears is greater than or equal to 50 frames; the multiple appearance of a sub-high-pressure color identification area means that the number of appearances is greater than three, and the area of the sub-high-pressure color identification area is greater than or equal to a 3×3 area dot matrix.

[0082] For example, when on a seat cushion composed of a pressure sensing layer with a 50×50 dot matrix and an adjacent point spacing of 5 mm, within the ischial region formed by the 21st row to the 40th row and the 1st column to the 50th column, it is detected that a high-pressure color identification area appears continuously for 50 frames and above within the 3×3 dot matrix range of the 29th row to the 31st row and the 24th column to the 26th column in the ischial region, and three or more sub-high-pressure color identification areas with an area not less than 3×3 dot matrix appear within the surrounding region of the 28th row to the 32nd row and the 22nd column to the 28th column, and at the same time, only a medium-pressure color identification area appears in the remaining area of the ischial region, it can be determined that the ischial region has an asymmetric high-pressure imbalance state. Figure 9 It is a screenshot in the pressure heat map of the ischial region, showing a partial schematic diagram of the persistent high-pressure burning point state in the ischial region. In the figure, the part composed of red and dark red areas is the high-pressure color identification area, the part composed of orange-yellow and orange-red is the sub-high-pressure color identification area, and the part composed of cyan and yellow-green is the medium-pressure color identification area.

[0083] It indicates that the user's sitting posture is inclined or the support on both sides of the seat cushion is unbalanced, and it is necessary to adjust the seat cushion structure to achieve an even pressure distribution.

[0084] It can be understood that in the pressure heat map corresponding to the data in the ischial region, two or three of the above-described ischial region ischial centralized compression state, ischial region asymmetric high-pressure imbalance state, and ischial region persistent high-pressure burning point state may appear simultaneously.

[0085] In some examples, in step S300, a design solution for the coccyx region of the seat is determined according to the pressure heat map corresponding to the coccyx region pressure data, including: S370, when it is determined according to the pressure heat map corresponding to the coccyx region pressure data that the coccyx region appears in the state of light coccyx pressure concentration, determine the first coccyx region design solution; wherein, the first coccyx region design solution is used to indicate that on the coccyx region of the seat cushion, a buffer ring is made at the edge of the hole corresponding to the concentrated area of the color identification area composed of color identification points displayed based on the pressure heat map, and memory foam is filled; It can be understood that the instruction to make a buffer ring at the edge of the hole corresponding to the concentrated area of the color identification area composed of color identification points displayed based on the pressure heat map on the coccyx region of the seat cushion and fill it with memory foam means that when it is found through the pressure heat map that there are concentrated color identification points in a small area of the coccyx region, it can be judged that the state of light coccyx pressure concentration appears at that place. To relieve the pressure at this part, a buffer structure is set at the position corresponding to the concentrated area of the color identification area on the seat cushion.

[0086] For example, in a seat cushion composed of a pressure sensing layer with a 50×50 dot matrix and a distance of 5m between any adjacent dot matrices, the coccyx region is the 41st - 50th row. If pressure values higher than 40 kPa are continuously detected in the range of the 45th row and the 25th - 26th columns, it can be regarded as the concentrated appearance of color identification points. Punch holes or open holes with a diameter of about 15 - 20 mm in the seat cushion material at this corresponding position; set a flexible buffer ring at the edge of the hole to form an elastic support edge; fill the inside of the hole with a soft memory foam material to provide adaptive deformation and decompression effects; form an overall annular support and central buffer structure, thereby reducing the pressure feeling in the concentrated stress area of the coccyx and improving the comfort of sitting for a long time.

[0087] S380, when it is determined according to the pressure heat map corresponding to the coccyx region pressure data that the coccyx region appears in the state of coccyx band-shaped high-pressure diffusion, determine the second coccyx region design solution; wherein, the second coccyx region design solution is used to indicate that a softer sponge is used in the middle area of the coccyx region of the seat cushion and gradually transitions to a medium hardness outward; It can be understood that the appearance of the coccyx band-shaped high-pressure diffusion state means that in the pressure heat map, a linear or band-shaped high-pressure region extending in the up and down direction and composed of multiple adjacent high-pressure color identification points appears in the coccyx region, indicating continuous compression around the coccyx, which is likely to cause coccyx tenderness or discomfort.

[0088] It can be understood that a softer sponge is used in the middle area of the coccyx region of the seat cushion, gradually transitioning to a medium hardness outward. That is, at the very center of the coccyx region of the seat cushion, a layer of low-density, slow-rebound memory foam is first laid to relieve the pressure on the coccyx to the greatest extent. Then, layer by layer, it is replaced with polyurethane foam with a faster rebound and higher density from this area outward, so that the material hardness gradually increases, ensuring both softness and comfort in the center and sufficient support from the surrounding areas, forming a smooth transition zone from soft to hard.

[0089] For example, on a seat cushion composed of a pressure sensing layer with a 50×50 dot matrix and an arbitrary dot matrix spacing of 5 mm, the coccyx region can be defined as the area of rows 42–48 and columns 22–28, covering an area of approximately 30×30 mm of the seat cushion. With the center point of this area, that is, row 45 and column 25 as the core, a slow-rebound material with a density of 20–30 kg / m³ is set at the center position. Then, for each outward expansion of one dot matrix unit, that is, an increase of 5 mm, the material hardness is increased by a certain amount, such as the density is increased to 35 kg / m³ and 40 kg / m³, to achieve a gradually changing structure from soft inside to slightly hard outside. This provides buffering at the center point where the user's coccyx is under greater pressure and support in the surrounding areas, thus effectively reducing coccyx tenderness, burning sensation or sciatic discomfort.

[0090] S390. When it is determined according to the pressure heat map corresponding to the pressure data in the coccyx region that there is a state of coccyx band-shaped high-pressure diffusion in the coccyx region, determine the design solution for the third coccyx region. Among them, the design solution for the third coccyx region is used to indicate that a wedge-shaped support region is reserved below the center of the rearmost part of the coccyx region of the seat cushion, with the front being high and the rear being low, and the tail end being lifted. A wedge-shaped cushion block with a front-end thickness h0 and a maximum tail-end height h is set, and it is covered with microfiber PU or breathable soft cloth on the surface.

[0091] It can be understood that the state of coccyx band-shaped high-pressure diffusion means that in the pressure heat map, there is a high-pressure region extending longitudinally in the coccyx region, indicating that the pressure has spread from the coccyx center to the surrounding band-shaped regions, showing that the user's entire coccyx is under continuous pressure and needs to be optimized and relieved through a buffer decompression zone or material zoning transition in the design.

[0092] It can be understood that a wedge-shaped support area is reserved below the center of the rearmost part of the coccyx area of the seat cushion, with the front being high and the rear being low, and the tail end being lifted. A wedge-shaped cushion block with a front-end thickness of h0 and a maximum height h at the tail end is set; covering the surface with microfiber PU or breathable soft cloth means that in order to relieve the pressure in the coccyx area, a wedge-shaped support area is reserved at the rearmost position of the seat cushion, directly below the coccyx. Its structural feature is that the front is low and the rear is high, and the tail is slightly lifted, like an inclined wedge, gradually increasing from the front to the rear. The front-end thickness of this wedge-shaped area is h0, and the highest point at the rear end is h, which can provide a support effect of lifting obliquely upward. Lifting the tail end can reduce the vertical pressure on the coccyx and improve sitting posture stability and comfort.

[0093] For example, on a seat cushion composed of a pressure sensing layer with a 50×50 dot matrix and an adjacent dot spacing of 5 mm, the relief solution for the high-pressure diffusion state of the coccyx band can be achieved by setting a wedge-shaped buffer structure with a low front and a high rear in the central axis area of the seat cushion tail: this structure is located within the range of rows 42 to 49 and columns 20 to 30, with a leading edge thickness of 10 mm, and the tail end thickness gradually transitioning to 25 mm, forming a lifting shape that slopes upward, effectively reducing the longitudinal band compression in the coccyx area; its surface is covered with breathable and soft PU or ice silk cloth to enhance the fitting feeling and comfort.

[0094] It can be understood that in the pressure heat map corresponding to the coccyx area data, two or three of the above-mentioned coccyx light-pressure concentration state, coccyx band high-pressure diffusion state, and coccyx pressure center posterior shift state may appear simultaneously.

[0095] In some examples, the pressure sensing layer is a pressure dot matrix of M rows and N columns, and the corresponding pressure heat map is a dot map with multiple identification color points presented within the pressure dot matrix of M rows and N columns. Among them, M = N = 50k, where k is a positive integer; in the pressure sensing layer dot matrix, the distance between the positions corresponding to every two adjacent sensing points on the seat cushion is 5 - 10 mm; in step S370, determining that the coccyx area appears in the coccyx light-pressure concentration state according to the pressure heat map corresponding to the coccyx area pressure data includes: S371. In the pressure heat map corresponding to the coccyx region pressure data, in the coccyx region formed by rows 41M / 50 to 50M / 50 and columns 1 to N, if a medium-pressure color identification area or a low-pressure color identification area appears as a whole and multiple frames continuously appear, and in the cross-region of rows 44M / 50 to 45M / 50 and columns 24N / 50 to 26N / 50, if a sub-high-pressure color identification area or a high-pressure color identification area appears and multiple frames continuously appear, and within the range of rows 43M / 50 to 46M / 50 and columns 22N / 50 to 28N / 50 around this region, if a medium-pressure color identification area or a low-pressure color identification area still appears and multiple frames continuously appear in a concentrated manner, then a concentrated state of gentle pressure on the coccyx is determined; among them, the identification color in the low-pressure color identification area is the first low-pressure color; when a medium-pressure color identification area or a low-pressure color identification area appears as a whole in the region, it means that the range of the medium-pressure color identification area or the low-pressure color identification area is greater than or equal to a 6×6 area dot matrix.

[0096] It can be understood that the low-pressure color identification area refers to the area with a relatively small pressure value represented by color identification in the seat cushion pressure heat map.

[0097] It can be understood that the first low-pressure color refers to the light blue color used as the identification color in the pressure range of 0 - 10 kPa in the low-pressure range of 0–20 kPa. The second low-pressure color refers to the blue color used as the identification color in the pressure range of 10–20 kPa.

[0098] For example, on a seat cushion corresponding to a 50×50 dot matrix with a 5 mm spacing between any adjacent dot matrices, in the coccyx region formed by rows 41 to 50 and columns 1 to 50, most of the dot matrices in rows 41 to 50 of the seat cushion coccyx region continuously show the color identification of the medium-pressure range of 20–40 kPa or the low-pressure range of 0–20 kPa, but in the small central area, in the approximately 10 mm×15 mm area where rows 44 to 45 and columns 24 to 26 intersect, the color identification of the sub-high-pressure range of 40–60 kPa or the high-pressure range of 60–90 kPa appears for more than 30 frames, and the surrounding area is still a medium-low-pressure area. The concentrated state of gentle pressure on the coccyx in the coccyx region is determined. Figure 10 This is a screenshot in the pressure heat map of the coccyx region, showing a partial schematic diagram of the concentrated state of gentle pressure on the coccyx. In the figure, the part composed of red and dark red areas is the high-pressure color identification area, the part composed of orange-yellow and orange-red is the sub-high-pressure color identification area, the part composed of cyan and yellow-green is the medium-pressure color identification area, and the part composed of light blue and dark blue is the low-pressure color identification area. The overall pressure is not large but there are perceptible pressure peaks locally, and a buffer ring and memory foam need to be added in this small area to disperse the mild compression in this area.

[0099] In some examples, the pressure sensing layer is a pressure dot matrix of M rows and N columns, and the corresponding pressure heat map is a dot map of identification color points presenting multiple identification colors within the pressure dot matrix of M rows and N columns, where M = N = 50k and k is a positive integer; in the pressure sensing layer dot matrix, the distance between the positions corresponding to every two adjacent sensing points on the seat cushion is 5 - 10 mm; in step S380, determining that there is a caudal vertebral band-shaped high-pressure diffusion state in the caudal vertebral region according to the pressure heat map corresponding to the caudal vertebral region pressure data includes: S381. In the pressure heat map corresponding to the detected caudal vertebral region pressure data, in the caudal vertebral region formed by the 41M / 50th to the 50M / 50th rows and the 1st to the Nth columns, in the 46M / 50th to the 50M / 50th rows and the 1st to the Nth columns, a high-pressure color identification area appears and the high-pressure color identification area is distributed in a band shape. In the 41M / 50th to the 45M / 50th rows and the 1st to the Nth columns, a sub-high-pressure color identification area continuously appears concentrated for 30 frames, and in the case where a medium-pressure color identification area continuously appears concentrated for 30 frames in the 41M / 50th to the 50M / 50th rows and the 1st to the 10N / 50th columns or the 40N / 50th to the 50N / 50th columns, it is determined that there is a caudal vertebral band-shaped high-pressure diffusion state; where the appearance of a high-pressure color identification area and the high-pressure color identification area being distributed in a band shape means that the high-pressure color identification area is a rectangular area dot matrix larger than 3×6 on the pressure heat map.

[0100] For example, in a seat cushion composed of a pressure sensing layer with a 50×50 dot matrix and an arbitrary adjacent dot matrix spacing of 5 mm, in the caudal vertebral region formed by the 41st to the 50th rows and the 1st to the 50th columns, between the 42nd and 48th rows, multiple points continuously appear between the 24th and 26th columns, and their pressure values exceed the set high-pressure threshold by greater than or equal to 60 kPa, forming a high-pressure band with a longitudinal length of about 30 - 40 mm and a transverse width of about 10 - 15 mm. In the case where a sub-high-pressure color identification area continuously appears concentrated in more than three areas in the 41st to the 45th rows and the 1st to the 50th columns, and a medium-pressure color identification area continuously appears concentrated in the 41st to the 50th rows and the 1st to the 10th columns or the 40th to the 50th columns, it is determined that there is a caudal vertebral band-shaped high-pressure diffusion state. Figure 11 It is a screenshot in the pressure heat map of the caudal vertebral region, showing a partial schematic diagram of the caudal vertebral band-shaped high-pressure diffusion state. In the figure, the part composed of red and dark red areas is the high-pressure color identification area, the part composed of orange-yellow and orange-red is the sub-high-pressure color identification area, and the part composed of cyan and yellow-green is the medium-pressure color identification area.

[0101] In some examples, the pressure sensing layer is a pressure dot matrix of M rows and N columns, and the corresponding pressure heat map is a dot map of identification color points presenting multiple identification colors within the pressure dot matrix of M rows and N columns, where M = N = 50k and k is a positive integer; in the pressure sensing layer dot matrix, the distance between the positions corresponding to every two adjacent sensing points on the seat cushion is 5 - 10 mm; in step 390, determining the state of posterior shift of the coccyx pressure center according to the pressure heat map corresponding to the coccyx area pressure data includes: S391. In the pressure heat map corresponding to the detected coccyx area pressure data, within the coccyx area formed by the 41M / 50th to the 50M / 50th rows and the 1st to the Nth columns, if a high-pressure color identification area appears continuously and concentratedly in multiple frames in the cross-region of the 44M / 50th to the 45M / 50th rows and the 24N / 50th to the 26N / 50th columns, and the color identification color of the high-pressure color identification area becomes darker as it gets closer to the rear of the seat cushion, and as time goes by, the high-pressure color identification area starts to shift to the 46M / 50th to the 50M / 50th rows and further rear areas, and in the case that other areas are basically medium-pressure color identification areas in consecutive frames of the pressure heat map, it is determined that the state of posterior shift of the coccyx pressure center appears; among them, the color system corresponding to the color identification points of the high-pressure color identification area becomes darker as it gets closer to the rear of the seat cushion; the high-pressure color identification area starts to shift to the 46M / 50th to the 50M / 50th rows and further rear areas means that as continuous frames are monitored in the original area, the high-pressure color identification area gradually disappears, and the high-pressure color identification area starts to appear in the 46M / 50th to the 50M / 50th rows and further rear areas.

[0102] For example, on a pressure sensing layer seat cushion composed of a 50×50 dot matrix with a dot pitch of 5 mm, in the heat map within the range of the 41st to the 50th rows and the 1st to the 50th columns, a high-pressure color identification area appears continuously for 50 frames in the cross-region of the 44th to the 45th rows and the 24th to the 26th columns, and the colors of these high-pressure points gradually deepen and move towards the 46th to the 50th rows further back on the seat cushion, that is, the number of high-pressure points in the original area decreases while the number of high-pressure points in the rear increases; at the same time, other areas of the seat cushion basically remain at a medium pressure level, then the state of posterior shift of the coccyx pressure center can be determined. Figure 12 Is a screenshot in the pressure heat map of the coccyx area, showing a partial schematic diagram of the state of posterior shift of the coccyx pressure center. In the figure, the part composed of red and dark red areas is the high-pressure color identification area, the part composed of orange-yellow and orange-red is the sub-high-pressure color identification area, and the part composed of cyan and yellow-green is the medium-pressure color identification area. This indicates that the pressure on the coccyx area continues to increase and shift backward in time, and the tail pressure distribution needs to be improved through structure or padding.

[0103] In some examples, S220. Synthesizing the total pressure heat map according to the pressure heat maps corresponding to the thigh area pressure data, the ischium area pressure data, and the coccyx area pressure data includes: S221. Extract the edge dot matrix data between any two adjacent regions among the thigh region pressure data, the ischium region pressure data, and the coccyx region pressure data from the corresponding pressure heat maps of these regions. Overlap and map each piece of edge dot matrix data to the global coordinates of the seat cushion, delete all other irrelevant dot matrix data, and synthesize them to obtain the total pressure heat map.

[0104] It can be understood that the "extraction" in the sentence of extracting the edge dot matrix data between any two adjacent regions among the thigh region, the ischium region, and the coccyx region refers to screening out that part of the dot matrix pressure data located on the boundary edge between two functional regions from the dot matrix pressure data collected from the entire pressure sensing layer for analyzing the pressure change, transition relationship, or zoning rationality at the boundary.

[0105] It can be understood that the edge dot matrix data refers to the data of those pressure sensing points located on the boundary edge between two functional regions, such as between the thigh region and the ischium region or between the ischium region and the coccyx region, in the seat cushion sensing layer composed of multiple regularly arranged pressure sensing points.

[0106] For example, on a seat cushion composed of a pressure sensing layer with a 50×50 dot matrix and an arbitrary adjacent point spacing of 5 mm, the edge dot matrix data refers to the data of the dot matrix between the adjacent region boundaries of functional regions such as the thigh region, the ischium region, and the coccyx region. For the thigh region, it is from the 1st row to the 20th row and the 1st column to the 50th column; for the ischium region, it is from the 21st row to the 40th row and the 1st column to the 50th column; for the coccyx region, it is from the 41st row to the 50th row and the 1st column to the 50th column. Then, the dot matrix between the 20th row and the 21st row, and the dot matrix between the 40th row and the 41st row are the edge dot matrix data, which is used to reflect the transition of the pressure distribution between two regions and helps to identify the positions of pressure discontinuity, local mutation, or abnormal structural connection.

[0107] It can be understood that overlapping and mapping to the global coordinates of the seat cushion means corresponding the pressure data extracted from each local functional region in the pressure sensing layer, such as the thigh region, the ischium region, and the coccyx region, to a fixed and unified coordinate system on the entire seat cushion for overall analysis and comparison.

[0108] It can be understood that deleting all other irrelevant dot matrix data means that when processing the pressure data, only the valid pressure dot matrix data in the relevant regions for analysis, such as the thigh region, the ischium region, and the coccyx region, are retained, and all the data outside the target regions that are not on the boundary edge are excluded to improve the analysis efficiency and result accuracy.

[0109] In some examples, S500. Adjust the design scheme according to the total pressure heat map, including: S510, when it is determined based on the total pressure heat map corresponding to the total pressure data that the seat cushion as a whole is in a high-pressure state at the thigh-seat-tail intersection zone, an overall adjustment plan for the seat cushion is determined; wherein, the overall adjustment plan is used to indicate that the edge intersection zone of the thigh area and the ischial area corresponding to the seat cushion is set as a high-elastic gel layer, and high-elastic gel inserts are arranged along the orthogonal row and column directions with the center coordinates of the intersection zone at a distance of ±1-2 lattice, and the color-marked area is expanded outward by 3-5 lattice distances to form a transition zone; wherein, the high-elastic gel layer adopts foam with gradient density from edge to center, high-density foam is selected at the edge, and gradually transitions to medium density and then to low density foam inward.

[0110] It can be understood that the high-pressure state in the thigh-seat-coccyx intersection zone refers to the intersection area between the thigh area, ischium area and coccyx area of the seat cushion. Due to uneven force distribution or unreasonable structural design, a pressure area higher than the set threshold continues to appear in this transition zone, forming a high-pressure concentration phenomenon in the intersection area.

[0111] It can be understood that the high-elastic gel layer uses foam with gradient density from the edge to the center, with high-density foam selected at the edge, gradually transitioning to medium-density and then to low-density foam inward, which means foam with gradually lower density.

[0112] For example, high-density polyurethane foam (density 65kg / m³) is used at the edges, medium-density polyurethane foam (density 50kg / m³) is used in the middle transition area, and low-density slow-rebound memory foam (density 30kg / m³) is used in the center area.

[0113] As you can understand, the intersection of the thigh and ischial areas of the seat cushion is designed as a high-elastic gel layer. High-elastic gel inserts are placed at a distance of ±1–2 dot grids along the orthogonal rows and columns from the center coordinate of this intersection. This color-coded area is extended outward by 3–5 dot grids to form a transition zone. This refers to the intersection of the thigh and ischial areas of the seat cushion. The overall adjustment plan is to design this area as a high-elastic gel layer to alleviate pressure concentration. Specifically, small high-elastic gel inserts are inserted at the center of the intersection, extending 1–2 dot grids in both the row and column directions from the center coordinate determined by the pressure heat map, creating a focused support area. Simultaneously, the color-coded high-pressure area is extended outward by 3–5 dot grids to form a pressure-absorbing transition zone. The material density of the high-elastic gel layer gradually changes from the edge to the center: high-density foam is used at the edge to ensure support, gradually changing to medium-density foam inward, and then to low-density foam to achieve a soft transition and enhance seating comfort.

[0114] For example, on a cushion composed of a pressure sensing layer with a 50×50 dot matrix and an adjacent dot pitch of 5 mm, the center coordinates of the junction strip are located in the 25th row and the 25th column. High-elastic gel inserts are inserted in the range from the 23rd to the 27th row and from the 23rd to the 27th column along the row and column directions. The high-pressure color area marked in the pressure heat map is expanded outward by 25 mm, that is, from the 20th row to the 30th row and from the 20th column to the 30th column, as the transition zone range. In this range, the high-elastic gel layer uses density-graded foam, starting from a high density at the outer edge and gradually transitioning to a low-density foam at the center, achieving a moderately soft and hard cushioning support, reducing local pressure concentration, and improving overall comfort and protection effect.

[0115] In some examples, the pressure sensing layer is a pressure dot matrix of M rows and N columns, and the corresponding pressure heat map is a dot map of marked color points presenting multiple marked colors within the pressure dot matrix of M rows and N columns, where M = N = 50k and k is a positive integer; in the pressure sensing layer dot matrix, the distance between the positions corresponding to every two adjacent sensing points on the cushion is 5 - 10 mm; in step S510, determining that the cushion has a high-pressure state at the femoral-sacral-coccygeal junction zone according to the total pressure heat map corresponding to the total pressure data includes: In the total pressure heat map corresponding to the detected total pressure data, in the cross region of the 20M / 50 to 22M / 50 rows and the 23N / 50 to 27N / 50 columns at the junction of the thigh region and the ischial region, a high-pressure color marked area appears continuously in multiple frames, and in the cross region of the 40M / 50 to 42M / 50 rows and the 20N / 50 to 24N / 50 columns at the junction of the ischial region and the coccygeal region, a sub-high-pressure color marked area appears or a high-pressure color marked area appears continuously in multiple frames, and the sub-high-pressure color marked area and the high-pressure color marked area that appear present a color gradient feature; determining that the cushion has a high-pressure state at the femoral-sacral-coccygeal junction zone; where the sub-high-pressure color marked area and the high-pressure color marked area that appear present a color gradient feature means that from the ischial region to the thigh region, the marked color corresponding to the high-pressure interval changes to the marked color corresponding to the low-pressure interval, and from the ischial region to the coccygeal region, the marked color corresponding to the high-pressure interval changes to the marked color corresponding to the low-pressure interval.

[0116] For example, on a cushion corresponding to a pressure sensing layer with a 50×50 dot matrix and an adjacent dot pitch of 5 mm, in the cross region of the 20th to 22nd rows and the 23rd to 27th columns at the junction of the thigh region and the ischial region, a high-pressure color marked area appears continuously in 30 frames, and in the cross region of the 40th to 42nd rows and the 20th to 24th columns at the junction of the ischial region and the coccygeal region, a sub-high-pressure color marked area appears or a high-pressure color marked area appears continuously in 30 frames, and the sub-high-pressure color marked area and the high-pressure color marked area that appear present a color gradient feature; determining that the cushion has a high-pressure state at the femoral-sacral-coccygeal junction zone. Figure 13Screenshot in the pressure heat map corresponding to the overall pressure data of the thigh area, ischial area and coccyx area, showing a partial schematic diagram of the high-pressure state at the femoral-ischial-coccygeal intersection zone. In the figure, the part composed of red and dark red areas is the high-pressure color identification area, the part composed of orange-yellow and orange-red is the sub-high-pressure color identification area, and the part composed of cyan and yellow-green is the medium-pressure color identification area.

[0117] It should be understood that the magnitudes of the sequence numbers of the steps in the above embodiments do not imply the order of execution. The execution order of each process should be determined according to its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0118] Corresponding to the office chair cushion design method described in the above embodiments, the embodiments of the present application also provide an office chair cushion design device, and each unit of the device can implement each step of the office chair cushion design method.

[0119] The device includes: A detection unit, configured to detect pressure data when a user sits on the pressure sensing layer of the cushion through the pressure sensing layer; wherein, the pressure data includes thigh area pressure data, ischial area pressure data and coccyx area pressure data; A generation unit, configured to respectively obtain corresponding pressure heat maps according to the thigh area pressure data, the ischial area pressure data and the coccyx area pressure data; A design unit, configured to respectively determine design schemes for the thigh area, the ischial area and the coccyx area of the cushion according to the pressure heat maps corresponding to the thigh area pressure data, the ischial area pressure data and the coccyx area pressure data; A synthesis unit, configured to synthesize the pressure heat maps corresponding to the thigh area pressure data, the ischial area pressure data and the coccyx area pressure data to obtain a total pressure heat map; An adjustment unit, configured to adjust the design scheme according to the total pressure heat map.

[0120] It should be noted that for the information interaction, execution process, etc. between the above devices / units, since they are based on the same concept as the method embodiments of the present application, their specific functions and the technical effects brought about can be specifically referred to in the method embodiment part, and will not be elaborated here.

[0121] The embodiments of the present application also provide an information processing device for a test device, Figure 7 This is a schematic structural diagram of the information processing device provided in an embodiment of the present application. The information processing device 700 includes a processor 710 and a memory 720, and the above-mentioned various components can be connected through one or more buses 730.

[0122] The information processing device 700 further includes a computer program 721, which is stored in the memory 720. When the computer program 721 is executed by the processor 710, the electronic device 700 is caused to execute the above method. Among them, all relevant contents of each step involved in the above method embodiment can be cited in the function description of the corresponding entity device, and will not be elaborated here.

[0123] An embodiment of this application also provides a computer-readable storage medium, which includes a computer program. When it runs on a computer, the computer is caused to execute the method provided by the above method embodiment.

[0124] It should be understood that in the embodiment of this application, the processor may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0125] It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of random access memory (RAM) are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchlink dynamic random access memory (SLDRAM), and direct rambus random access memory (DR RAM).

[0126] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or by a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of the present application.

[0127] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be described herein again.

[0128] In several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection of the devices or units can be in electrical, mechanical, or other forms.

[0129] It should be understood that the "embodiments" mentioned throughout the specification mean that the specific features, structures, or characteristics related to the embodiments are included in at least one embodiment of the present application. Therefore, the various embodiments throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics can be combined in one or more embodiments in any suitable manner.

[0130] Those of ordinary skill in the art can understand that the various numerical numbers such as the first and second involved in the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application, nor do they represent the order of precedence.

[0131] In the present application, the elements represented by using the singular number are intended to mean "one or more", rather than "one and only one", unless otherwise specified. In the present application, unless otherwise specified, "at least one" is intended to mean "one or more", and "a plurality" is intended to mean "two or more".

[0132] The term "and / or" in this article is merely a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the front and rear associated objects.

[0133] As described above, this is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims. In short, the above description is only a preferred embodiment of the technical solution of the present application and is not used to limit the protection scope of the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present application should all be included in the protection scope of the present application.

Claims

1. A design method for an office chair cushion, characterized in that, Applied to a testing device, the testing device includes a seat, a seat cushion, a pressure sensing layer, and an information processing device. The pressure sensing layer is disposed on the seat cushion, and the information processing device is electrically connected to the pressure sensing layer. The pressure sensing layer includes a thigh area, an ischium area, and a coccyx area. The seat cushion correspondingly includes a thigh area, an ischium area, and a coccyx area. The method includes: Detecting pressure data when a user sits on the pressure sensing layer of the seat cushion through the pressure sensing layer; wherein, the pressure data includes thigh area pressure data, ischium area pressure data, and coccyx area pressure data; Respectively obtaining corresponding pressure heat maps according to the thigh area pressure data, the ischium area pressure data, and the coccyx area pressure data; Respectively determining design schemes for the thigh area, the ischium area, and the coccyx area of the seat cushion according to the pressure heat maps corresponding to the thigh area pressure data, the ischium area pressure data, and the coccyx area pressure data; Synthesizing the pressure heat maps corresponding to the thigh area pressure data, the ischium area pressure data, and the coccyx area pressure data to obtain a total pressure heat map; Adjusting the design scheme according to the total pressure heat map.

2. The design method of an office chair cushion according to claim 1, characterized in that, The thigh area pressure data, the ischium area pressure data, and the coccyx area pressure data all include a plurality of pressure point data. Each pressure point data includes a pressure value and a corresponding position coordinate. Respectively obtaining corresponding pressure heat maps according to the thigh area pressure data, the ischium area pressure data, and the coccyx area pressure data includes: Comparing the pressure values of the respective pressure point data in the thigh area pressure data, the ischium area pressure data, and the coccyx area pressure data with a preset pressure range to obtain a corresponding identification color for each pressure point data; wherein, the preset pressure range includes a plurality of different pressure intervals, and each pressure interval corresponds to an identification color; Generating pressure heat maps corresponding to the thigh area pressure data, the ischium area pressure data, and the coccyx area pressure data according to the identification colors corresponding to the respective pressure point data in the thigh area pressure data, the ischium area pressure data, and the coccyx area pressure data and the corresponding position coordinates; wherein, the pressure heat map includes color identification points corresponding to the respective pressure point data in the corresponding thigh area pressure data, ischium area pressure data, or coccyx area pressure data.

3. A method for designing an office chair cushion according to claim 1, characterized in that The detecting pressure data when a user sits on the pressure sensing layer of the seat cushion through the pressure sensing layer includes: Detecting the pressure data when a user sits on the pressure sensing layer of the seat cushion through the pressure sensing layer once every first preset time period, and the duration of detecting the pressure data when a user sits on the pressure sensing layer of the seat cushion each time is a second preset time period, and the frequency of detecting the pressure data when a user sits on the pressure sensing layer of the seat cushion within the second preset time period is a fixed acquisition frequency; wherein, the value range of the first preset time period is 10 - 40 minutes; the value range of the second preset time period is 5 - 10 minutes; the fixed acquisition frequency is 1 - 2 seconds each time.

4. The design method of an office chair cushion according to claim 2, characterized in that, Determine the design solution for the thigh area of the seat according to the pressure heat map corresponding to the thigh area pressure data, including: When it is determined according to the pressure heat map corresponding to the thigh area pressure data that there is a state of concentrated pressure at the front edge in the thigh area, determine the first design solution for the thigh area; wherein, the first design solution for the thigh area is used to indicate that a flexible arc hemming with a radius of a is provided at the front edge of the thigh area of the seat cushion, and the inner side of the flexible arc hemming is integrally formed with the surface layer of the seat cushion or fixed by hot melt bonding; When it is determined according to the pressure heat map corresponding to the thigh area pressure data that there is a state of concentrated inner thigh pressure in the thigh area, determine the second design solution for the thigh area; wherein, the second design solution for the thigh area is used to indicate that side support belts are installed on both sides near the perineum on the inner side of the thigh area of the seat cushion, and the material of the side support belts is PU, TPU, TPE or high-strength composite fiber; When it is determined according to the pressure heat map corresponding to the thigh area pressure data that there is an uneven pressure difference state on the outer side of the thigh in the thigh area, determine the third design solution for the thigh area; wherein, the third design solution for the thigh area is used to indicate that based on the high-pressure color identification area composed of the color identification points shown in the pressure heat map, the first filler with a thickness of d1 is used in the left area of the thigh area of the seat cushion corresponding to the position of the high-pressure color identification area, and the second filler with a thickness of d2 is padded below the position of the high-pressure color identification area in the right area of the thigh area of the seat cushion; the identification colors in the high-pressure color identification area include a first high-pressure color and a second high-pressure color, and the pressure corresponding to the second high-pressure color is greater than the pressure corresponding to the first high-pressure color.

5. A design method for an office chair seat cushion according to claim 4, characterized in that, The pressure sensing layer is a pressure dot matrix of M rows and N columns, and the corresponding pressure heat map is a map of identification color points presenting multiple identification colors within the pressure dot matrix of M rows and N columns, where M = N = 50k and k is a positive integer; the distance between every two adjacent dot matrices in the pressure dot matrix is 5 - 10 mm; determining that there is a state of concentrated pressure at the front edge in the thigh area according to the pressure heat map corresponding to the thigh area pressure data includes: In the pressure heat map corresponding to the thigh area pressure data detected, when a high-pressure color identification area appears in the 1st row to the 2M / 5th row and the 1st column to the Nth column in the thigh area formed, and the high-pressure color identification area continuously appears in multiple frames symmetrically in the left area of the front edge of the thigh area and the right area of the front edge of the thigh area, it is determined that there is a state of concentrated pressure at the front edge in the thigh area; wherein, the high-pressure color identification area is an area dot matrix with an area greater than or equal to 3×3; the pressure range represented by the high-pressure color identification area is 60 - 90 kPa; the identification colors in the high-pressure color identification area are the first high-pressure color and the second high-pressure color; the pressure corresponding to the second high-pressure color is greater than the pressure corresponding to the first high-pressure color; the left area is the intersection area located in the 1st row to the 3M / 50th row and the N / 5th column to the 14N / 50th column, and the right area is the intersection area located in the 1st row to the 3M / 50th row and the 7N / 10th column to the 39N / 50th column; Determining that the thigh area has a concentrated inner thigh pressure state based on the pressure heat map corresponding to the thigh area pressure data, including: In the pressure heat map corresponding to the detected thigh area pressure data, within the thigh area formed by the 1st row to the 2M / 5th row and the 1st column to the Nth column, in the cross-region of the 8M / 50th row to the 15M / 50th row and the 23N / 50th column to the 28N / 50th column, multiple consecutive concentrated occurrences of the sub-high pressure color identification areas appear. In the 1st row to the 7M / 50th row or the 16M / 50th row to the 2M / 5th row, and the 1st column to the 22N / 50th column or the 29N / 50th column to the Nth column, the sub-high pressure color identification areas also appear simultaneously. When two concentrated occurrences of the high pressure color identification areas appear in the inner thigh area, it is determined that the thigh area has a concentrated inner thigh pressure state; wherein, the range of the sub-high pressure color identification area is greater than or equal to a 3×3 area dot matrix; the multiple consecutive concentrated occurrences refer to the number of frames appearing being greater than or equal to 30 frames; the pressure range represented by the sub-high pressure color identification area is 40 - 60 kPa; the identification colors in the sub-high pressure color identification area are the first high pressure color and the second high pressure color; the pressure corresponding to the second high pressure color is greater than the pressure corresponding to the first high pressure color; the appearance of two high pressure color identification areas in the inner thigh area means that a high pressure color identification area appears in the cross-region of the 1M / 5th to the 12M / 50th row and the 24N / 50th column to the 25N / 50th column on the left side, and a high pressure color identification area appears in the cross-region of the 10M / 50th row to the 12M / 50th row and the 26N / 50th column to the 27N / 50th column on the right side; Determining that the thigh area has a thigh outer side pressure difference state based on the pressure heat map corresponding to the thigh area pressure data, including: In the pressure heat map corresponding to the detected thigh area pressure data, within the thigh area formed by the 1st row to the 2M / 5th row and the 1st column to the Nth column, in the cross-region of the 10M / 50th row to the 12M / 50th row and the 2N / 50th column to the 4N / 50th column on the left side of the thigh area, multiple consecutive concentrated occurrences of the sub-high pressure color identification areas appear. In the cross-region of the 8M / 50th row to the 10M / 50th row and the 47N / 50th column to the 49N / 50th column on the right side of the thigh area, multiple consecutive concentrated occurrences of the medium pressure color identification areas appear. When the medium pressure color identification areas appear in the remaining thigh area dot matrix of the 1st row to the 9M / 50th row or the 13M / 50th row to the 2M / 5th row, and the 5N / 50th column to the 46N / 50th column, it is determined that the thigh area has a thigh outer side pressure difference state; wherein, the range of the medium pressure color identification area is greater than or equal to a 3×3 area dot matrix; the multiple consecutive concentrated occurrences refer to the number of frames appearing being greater than or equal to 30 frames; the pressure range represented by the medium pressure color identification area is 20 - 40 kPa; the identification colors in the medium pressure color identification area are the first medium pressure color and the second medium pressure color; the pressure corresponding to the second medium pressure color is greater than the pressure corresponding to the first medium pressure color.

6. The method for designing an office chair cushion according to claim 2, wherein, Determine the design solution for the ischial region of the seat based on the pressure heat map corresponding to the ischial region pressure data, including: When it is determined from the pressure heat map corresponding to the ischial region pressure data that there is an ischial concentrated compression state in the ischial region, determine the first ischial region design solution; wherein, the first ischial region design solution is used to indicate that a buffer groove with a depth of d is opened in the ischial region of the seat cushion; When it is determined from the pressure heat map corresponding to the ischial region pressure data that there is an asymmetric high-pressure imbalance state in the ischial region, determine the second ischial region design solution; wherein, the second ischial region design solution is used to indicate that the seat cushion fabric in the ischial region of the seat cushion is set as a multi-material layered structure, and the center of the ischial region uses a softer material and the corresponding position on the seat cushion of the high-pressure center point identified based on the color identification of the ischial region on the pressure heat map uses a softer material, and taking the center point corresponding position of the high-pressure center point on the seat cushion as the origin, the material hardness gradually transitions to a harder material at the corresponding positions in the 6×6 dot matrix coverage area of the pressure heat map around it on the seat cushion; When it is determined from the pressure heat map corresponding to the ischial region pressure data that there is an ischial persistent high-pressure burning point state in the ischial region, determine the third ischial region design solution; wherein, the third ischial region design solution is used to indicate that in the high-pressure color identification area of the ischial region identified based on the pressure heat map, the corresponding position on the ischial region of the seat cushion is replaced with a medium-hardness elastic material as a support transition area; the surface material of the remaining color identification areas uses PU fabric or ice silk mesh fabric.

7. The design method of an office chair cushion according to claim 2, characterized in that, Determine the design solution for the coccyx region of the seat based on the pressure heat map corresponding to the coccyx region pressure data, including: When it is determined from the pressure heat map corresponding to the coccyx region pressure data that there is a coccyx light pressure concentration state in the coccyx region, determine the first coccyx region design solution; wherein, the first coccyx region design solution is used to indicate that a buffer ring is made at the edge of the hole corresponding to the concentrated area of the seat cushion coccyx region and the color identification area composed of the color identification points shown on the pressure heat map in the coccyx region of the seat cushion, and memory foam is filled; When it is determined from the pressure heat map corresponding to the coccyx region pressure data that there is a coccyx band-shaped high-pressure diffusion state in the coccyx region, determine the second coccyx region design solution; wherein, the second coccyx region design solution is used to indicate that a softer sponge is used in the middle area of the coccyx region of the seat cushion and gradually transitions to a medium hardness outward; When it is determined from the pressure heat map corresponding to the coccyx region pressure data that there is a coccyx pressure center backward shift state in the coccyx region, determine the third coccyx region design solution; wherein, the third coccyx region design solution is used to indicate that a wedge-shaped support area is reserved below the center of the rearmost part of the coccyx region of the seat cushion, with the front high and the rear low, and the tail end is lifted, and a wedge-shaped cushion block with a front thickness of h0 and a maximum tail end height of h is set; the surface is covered with microfiber PU or breathable soft cloth.

8. The method for designing an office chair cushion according to claim 2, wherein Synthesize the total pressure heat map based on the pressure heat maps corresponding to the thigh region pressure data, the ischial region pressure data, and the coccyx region pressure data, including: Extract the edge dot matrix data between any two adjacent regions among the thigh region, the ischium region, and the coccyx region from the pressure heat maps corresponding to the thigh region pressure data, the ischium region pressure data, and the coccyx region pressure data; Overlay and map each of the edge dot matrix data onto the global coordinates of the seat cushion, delete all other irrelevant dot matrix data, and synthesize to obtain a total pressure heat map; Adjust the design scheme according to the total pressure heat map, including: When it is determined from the total pressure heat map that there is a high-pressure state in the femoral-ischial-coccygeal intersection zone in the overall seat cushion, determine the overall adjustment scheme for the seat cushion; wherein, the overall adjustment scheme is used to indicate that the edge intersection zone between the thigh region and the ischium region corresponding to the seat cushion is set as a high-elastic gel layer, and high-elastic gel inserts are arranged at a distance of ±1–2 dot matrixes in the row and column orthogonal directions from the center coordinates of the intersection zone, and a transition zone is formed by expanding 3-5 dot matrix distances outward at the color identification zone at the edge intersection zone between any two adjacent regions among the thigh region, the ischium region, and the coccyx region; wherein, the high-elastic gel layer uses a foam with a gradually changing density from the edge to the center, with a high-density foam selected at the edge, gradually transitioning inward to a medium-density foam and then to a low-density foam.

9. An office chair cushion design device, characterized in that, Applied to a testing device, the testing device includes a seat, a pressure sensing layer, a seat cushion, and an information processing device. The pressure sensing layer is disposed on the seat cushion of the seat, the information processing device is electrically connected to the pressure sensing layer. The pressure sensing layer includes a thigh region, an ischium region, and a coccyx region. The seat cushion correspondingly includes a thigh region, an ischium region, and a coccyx region. The office chair seat cushion design device includes: A detection unit for detecting pressure data when a user sits on the pressure sensing layer of the seat cushion through the pressure sensing layer; wherein, the pressure data includes thigh region pressure data, ischium region pressure data, and coccyx region pressure data; A generation unit for respectively obtaining corresponding pressure heat maps according to the thigh region pressure data, the ischium region pressure data, and the coccyx region pressure data; A design unit for respectively determining the design schemes for the thigh region, the ischium region, and the coccyx region of the seat cushion according to the pressure heat maps corresponding to the thigh region pressure data, the ischium region pressure data, and the coccyx region pressure data; A synthesis unit for synthesizing to obtain a total pressure heat map according to the pressure heat maps corresponding to the thigh region pressure data, the ischium region pressure data, and the coccyx region pressure data; An adjustment unit for adjusting the design scheme according to the total pressure heat map.

10. A testing device, characterized in that, Including a seat, a pressure sensing layer, and an information processing device. The pressure sensing layer is disposed on the seat cushion of the seat, the information processing device is electrically connected to the pressure sensing layer. The pressure sensing layer includes a thigh region, an ischium region, and a coccyx region. The seat cushion correspondingly includes a thigh region, an ischium region, and a coccyx region. The information processing device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the method according to any one of claims 1 to 8 is implemented.

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