A sleep posture adaptive pillow and a sleep posture judgment and sleep posture adjustment method thereof

Abstract

The application discloses a sleep posture adaptive pillow and a sleep posture judging and adjusting method thereof, and relates to the technical field of pillows, and comprises the following parts: a pillow, a pressure matrix sensing system arranged in the pillow, and a height adjusting actuating mechanism; the pressure matrix sensing system is connected with the height adjusting actuating mechanism and located above the height adjusting actuating mechanism; the pressure matrix sensing system comprises a pressure sensing matrix composed of a plurality of sensing unit arrays, is used for pressure sampling and pressure distribution map generation, identifies and locates head and face feature dissection points through the pressure distribution map, judges the sleep posture, and the dissection points include a cochlea area, an area above the cochlea and an area below and in front of the cochlea; the height adjusting actuating mechanism adopts a 17-area linkage air bag to adjust the height, and the air bag of each area is provided with an independent air pump and a piezoelectric proportional valve, and is used for height adjustment of the corresponding area according to the detection result of the pressure matrix sensing system. The application can adjust the gradient pressure, and realizes accurate judgment and accurate adjustment of the sleep posture.

Description

Technical Field

[0001] This invention relates to the fields of smart home and healthy sleep, and in particular to a sleeping posture adaptive pillow and its sleeping posture judgment and adjustment method. Background Technology

[0002] Current dynamic sleep posture adjustment mainly relies on pressure sensors to identify sleeping posture and uses airbags to adjust needle height and pressure distribution. However, due to limitations in hardware precision and algorithm compatibility, the actual results fall significantly short of expectations. Traditional methods often employ centimeter-level sensors (such as 30×30mm units) and coarse airbag partitioning (usually ≤5 zones). Their spatial resolution is insufficient to capture the pressure characteristics of millimeter-level anatomical structures such as the concha and zygomatic bone, and they cannot analyze the micro-pressure distribution in key areas such as the concha (8×10mm) and zygomatic bone (12×15mm), leading to misjudgment of sleeping posture and local pressure malfunction, and also failing to achieve targeted gradient pressure adjustment.

[0003] Therefore, there is an urgent need for an adaptive pillow that can adjust gradient pressure to accurately judge and precisely adjust sleeping posture. Summary of the Invention

[0004] The present invention aims to provide a sleeping posture adaptive pillow that can achieve gradient pressure adjustment, as well as a sleeping posture judgment and adjustment method, to solve the problem that the existing technology cannot perform targeted gradient pressure adjustment. The present invention achieves high-resolution pressure detection density and gradient pressure adjustment, thereby enabling accurate judgment and precise adjustment of sleeping posture.

[0005] To achieve the above objectives, the basic solution of the present invention is as follows: a posture-adaptive pillow, comprising: a pillow, a pressure matrix sensing system disposed inside the pillow, and a height adjustment actuator; the pressure matrix sensing system is connected to the height adjustment actuator and is located above the height adjustment actuator; the pressure matrix sensing system includes a pressure sensing matrix composed of an array of several sensing units, used for pressure sampling to generate a pressure distribution map, identifying and locating anatomical points of head and face features through the pressure distribution map, and determining the sleeping posture, wherein the anatomical points include the cochlear region, the superior cochlear region, and the anterior inferior cochlear region; the height adjustment actuator uses 17-zone linked airbags for height adjustment, each airbag being equipped with an independent air pump and a piezoelectric proportional valve, used for adjusting the height of the corresponding zone according to the detection results of the pressure matrix sensing system.

[0006] Furthermore, the sensing unit comprises 2250 units, each 10×10mm in size, forming a 50×45 array pressure matrix.

[0007] Furthermore, the cochlear region is the area centered on the concha cavity and within a preset radius; the upper cochlear region is the area defined by a preset side length at a first preset distance directly above the cochlear region; the lower front cochlear region is the area defined by a preset side length at a second preset distance in front of the cochlea and a third preset distance below the cochlea in front of the cochlea.

[0008] Furthermore, the 17-zone linkage airbag includes five rows of airbags arranged longitudinally inside the pillow, with five airbags arranged longitudinally in the center row and three airbags arranged longitudinally in each of the four rows on both sides.

[0009] A method for determining the sleeping posture using a posture-adaptive pillow, implemented using the pillow as described above, includes the following steps: acquiring the pressure in the cochlear region, the superior cochlear region, and the anterior inferior cochlear region, as well as the head contact surface, through the posture-adaptive pillow; calculating a first ratio of the average pressure in the cochlear region to the average pressure in the superior cochlear region, and determining that a first condition is met when the first ratio is greater than or equal to a first preset ratio; calculating a second ratio of the average pressure in the superior cochlear region to the average pressure in the anterior inferior cochlear region, and determining that a second condition is met when the second ratio is greater than or equal to a second preset ratio; and calculating the head contact surface pressure using a weighted average method. The coordinates of the pressure distribution center on the contact surface are measured, the coordinates of the maximum pressure point are detected, and the straight-line distance between the coordinates of the maximum pressure point and the coordinates of the pressure distribution center is calculated to obtain the pressure center offset. When the pressure center offset is greater than or equal to 1 / 3 of the equivalent radius of the head contact surface, the third condition is deemed to have been met. When the first, second, and third conditions are met simultaneously, the comprehensive confidence level is calculated according to a preset weight ratio. When the comprehensive confidence level exceeds the preset confidence level, it is determined to be a valid lateral recumbent signal, and an adjustment command is issued. When the confidence level does not exceed the preset confidence level, the current state is maintained and the next round of sampling verification is started.

[0010] Furthermore, the preset weighting ratio is as follows: the first condition accounts for 40%, the second condition accounts for 30%, and the third condition accounts for 30%.

[0011] Furthermore, the preset confidence level is 85%.

[0012] A method for adjusting the sleeping posture of a posture-adaptive pillow, implemented using the posture-adaptive pillow as described above, and adjusting the sleeping posture based on the judgment result of the posture judgment method of the posture-adaptive pillow as described above, includes the following steps: detecting the current operating mode of the posture-adaptive pillow, the operating mode including a side-lying intervention mode and a balance mode; if it is a side-lying intervention mode, then a side-lying position duration determination is performed, and when the side-lying duration exceeds a preset time threshold, and the pressure fluctuation frequency is less than a preset frequency for a set duration, and the overall confidence level is greater than a confidence threshold, the pressure ratio of the cochlear region, the upper cochlear region, and the anterior inferior cochlear region is adjusted to a first preset pressure ratio by the height adjustment actuator; if it is a balance mode, when the pressure center offset is less than 1 / 5 of the equivalent radius of the head contact surface, the pressure ratio of the cochlear region, the upper cochlear region, and the anterior inferior cochlear region is adjusted to a second preset pressure ratio by the height adjustment actuator.

[0013] Furthermore, the first set pressure ratio is 2.5:1.8:1, and the second set pressure ratio is 1.2:1.1:1.

[0014] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows: a pressure matrix sensing system and a height adjustment actuator are set inside the pillow. The pressure matrix sensing system is connected to the height adjustment actuator and is located above the height adjustment actuator. The pressure matrix sensing system includes a pressure sensing matrix composed of several sensing unit arrays, used to sample pressure and generate a pressure distribution map. The pressure distribution map is used to identify and locate anatomical points of head and face features, including the cochlear region, the superior cochlear region, and the anterior inferior cochlear region. The height adjustment actuator uses 17-zone linkage airbags for height adjustment. Each zone airbag is equipped with an independent air pump and a pressure proportional valve, used to adjust the height of the corresponding zone according to the detection results of the pressure matrix sensing system. The pressure matrix sensing system achieves high-resolution pressure detection density, accurately captures anatomical features such as the cochlea, the superior cochlea, and the anterior inferior cochlear region, and realizes sleeping posture judgment. The 17-zone linkage airbags precisely control the pressure values ​​of different parts and perform targeted gradient pressure adjustment, thereby achieving precise adjustment of sleeping posture. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of a sleeping posture adaptive pillow in one embodiment;

[0016] Figure 2 This is a schematic diagram of head and face pressure in one embodiment;

[0017] Figure 3 This is a schematic diagram of the distribution of the 17-zone linkage airbags in one embodiment;

[0018] Figure 4This is a flowchart illustrating a method for determining the sleeping posture of a posture-adaptive pillow in one embodiment.

[0019] Figure 5 This is a flowchart illustrating a method for adjusting the sleeping posture of a posture-adaptive pillow in one embodiment. Detailed Implementation

[0020] To make the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figure 1 As shown, a posture-adaptive pillow is provided, including: a pillow 10, a pressure matrix sensing system 20 disposed inside the pillow 10, and a height adjustment actuator 30; the pressure matrix sensing system 20 is connected to the height adjustment actuator 30 and is located above the height adjustment actuator 30; the pressure matrix sensing system 20 includes a pressure sensing matrix composed of an array of several sensing units 21, used to perform pressure sampling to generate a pressure distribution map, identify and locate anatomical points of head and face features through the pressure distribution map, and determine the sleeping posture, the anatomical points including the cochlear region, the superior cochlear region, and the anterior inferior cochlear region; the height adjustment actuator 30 uses 17-zone linked airbags for height adjustment, each zone's airbag 31 is equipped with an independent air pump and a piezoelectric proportional valve (not shown), used to adjust the height of the corresponding zone according to the detection results of the pressure matrix sensing system 20.

[0022] In this embodiment, a pressure matrix sensing system 20 and a height adjustment actuator 30 are installed inside the pillow 10. The pressure matrix sensing system 20 is connected to the height adjustment actuator 30 and is located above the height adjustment actuator 30. The pressure matrix sensing system 20 includes a pressure sensing matrix formed by an array of several sensing units 21, used to sample pressure and generate a pressure distribution map. The pressure distribution map is used to identify and locate anatomical points of head and face features, including the cochlear region, the superior cochlear region, and the anterior inferior cochlear region. The height adjustment actuator 30 uses 17-zone linkage airbags for height adjustment. Each airbag 31 is equipped with an independent air pump and a pressure proportional valve, used to adjust the height of the corresponding area according to the detection results of the pressure matrix sensing system 20. The pressure matrix sensing system 20 achieves high-resolution pressure detection density, accurately captures anatomical features such as the cochlea, the superior cochlea, and the anterior inferior cochlear region, and realizes sleeping posture judgment. The 17-zone linkage airbags precisely control the pressure values ​​of different parts and perform targeted gradient pressure adjustment, thereby achieving precise adjustment of sleeping posture.

[0023] Specifically, the pressure matrix sensing system 20 is positioned above the height adjustment actuator 30. The pressure is measured by the pressure matrix sensing system 20, and the sleeping posture is determined based on the measured pressure. Finally, the sleeping posture is adjusted by the height adjustment actuator 30 based on the sleeping posture determination result.

[0024] Specifically, the flow rate of the independent air pump is 0-150 mL / s, and the control accuracy of the piezoelectric proportional valve is ±0.5 kPa.

[0025] Specifically, after obtaining the pressure distribution map, the pressure matrix sensing system 20 can reflect the pressure level in real time through the color of the heat map (arranging the pressure of the sensor units in the pressure distribution map area from largest to smallest, with red area being the area of ​​maximum pressure, brown being the area of ​​the top 5% pressure value, yellow being the area of ​​the top 5%-20% pressure value, green being the area of ​​the top 20%-50% pressure value, blue being the area of ​​the top 50%-80% pressure value, and dark blue being the area of ​​the top 80%-100% pressure value), automatically identifying and excluding areas with abnormal pressure.

[0026] The sensing unit 21 comprises 2250 units, each 10×10mm in size, forming a 50×45 array pressure matrix.

[0027] Specifically, the pillow 10 incorporates a 10mm × 10mm high-resolution sensing unit 21, forming a 50 × 45 array with a total of 2250 sensing units, significantly improving resolution compared to existing technologies. During pressure sampling, a high-precision pressure distribution map can be generated at a sampling rate of 50Hz. A partial pressure distribution diagram is shown below. Figure 2 As shown.

[0028] The cochlear region is the area centered on the concha and within a preset radius; the upper cochlear region is the area defined by a preset side length at a first preset distance directly above the cochlear region; the lower front cochlear region is the area defined by a preset side length at a second preset distance in front of the cochlea and a third preset distance below the cochlea.

[0029] Specifically, when identifying anatomical points using a pressure distribution map, the anatomical points on the pressure distribution map are divided into the cochlear region, the superior cochlear region, and the anterior inferior cochlear region. The cochlear region is the area centered on the concha and within a preset radius, which can be set to 15mm. The superior cochlear region is the area defined by a preset side length at a first preset distance directly above the cochlear region, which can be set to 25mm, and the preset side length can be 20mm; that is, the superior cochlear region is defined by a 20×20mm square frame. The anterior inferior cochlear region is the area defined by preset side lengths at a second preset distance in front of the cochlea and a third preset distance below it, both of which can be set to 20mm; that is, the anterior inferior cochlear region is defined by a 20×20mm square frame.

[0030] The 17-zone linkage airbag system includes five rows of airbags arranged longitudinally inside the pillow, with five airbags in the center row and three airbags in each of the four rows on both sides.

[0031] Specifically, the distribution of the 17-zone coordinated airbags is as follows: Figure 3 As shown, the pillow 10 includes five rows of airbags arranged longitudinally inside. The central row has five airbags, and the four side rows each have three airbags. Since the head is typically positioned at the center of the pillow's horizontal and vertical axes, five airbags in the central row allow for more precise height adjustment at the center. Simultaneously, the horizontal distribution of the airbags is not uniform; a narrower area is designated for airbags in the center, while wider areas are left at the top and bottom for more precise horizontal height adjustment at the center. The 17 interconnected airbag zones enable height adjustment in all areas of the pillow with high precision, facilitating sleeping posture adjustment.

[0032] In one embodiment, such as Figure 4 As shown, a method for determining the sleeping posture of a posture-adaptive pillow is provided. The sleeping posture adjustment is achieved using the aforementioned posture-adaptive pillow, and includes the following steps:

[0033] Step S410: Obtain the pressure of the cochlear region, the upper cochlear region, and the anterior and inferior cochlear region, as well as the head contact surface, using the posture-adaptive pillow.

[0034] Specifically, when determining sleeping posture, the pressure matrix sensing system in the posture-adaptive pillow collects pressure data from the cochlear region, the superior cochlear region, and the anterior inferior cochlear region, and obtains the head contact surface, such as... Figure 2 The area enclosed by the red curve shown.

[0035] Step S420: Calculate the first ratio of the average pressure in the cochlear region to the average pressure in the superior cochlear region. If the first ratio is greater than or equal to the first preset ratio, determine that the first condition has been met.

[0036] Specifically, based on the obtained pressure data, the average pressure in the cochlear region and the average pressure in the superior cochlear region are calculated, and a first ratio between the two is obtained. When the first ratio is greater than or equal to a first preset ratio, the first condition is met. The first preset ratio can be set to 1.5.

[0037] Step S430: Calculate the second ratio of the average pressure in the superior cochlear region to the average pressure in the inferior anterior cochlear region. If the second ratio is greater than or equal to the second preset ratio, determine that the second condition has been met.

[0038] Specifically, based on the obtained pressure data, a second ratio of the average pressure in the superior cochlear region to the average pressure in the inferior anterior cochlear region is calculated. When the second ratio is greater than or equal to a second preset ratio, the second condition is met. The second preset ratio can be set to 1.2.

[0039] Steps S420 and S430 are used to determine the gradient relationship of pressure in the cochlear region, the superior cochlear region, and the anterior inferior cochlear region.

[0040] Step S440: Calculate the coordinates of the pressure distribution center on the head contact surface based on the weighted average method, detect the coordinates of the maximum pressure point, and calculate the straight-line distance between the coordinates of the maximum pressure point and the coordinates of the pressure distribution center to obtain the pressure center offset. When the pressure center offset is greater than or equal to 1 / 3 of the equivalent radius of the head contact surface, it is determined that the third condition has been met.

[0041] Specifically, after determining the pressure gradient relationship, a pressure center offset determination is also required. This involves calculating the coordinates of the pressure distribution center on the head contact surface using a weighted average method, detecting the coordinates of the maximum pressure point, and calculating the straight-line distance between the maximum pressure point coordinates and the pressure distribution center coordinates to obtain the pressure center offset. This offset is then compared with the equivalent radius of the head contact surface. If the offset is greater than or equal to one-third of the equivalent radius, the third condition is met. The equivalent radius of the head contact surface can be calculated by ellipse fitting to the head contact surface.

[0042] In step S450, when the first condition, the second condition, and the third condition are met simultaneously, the comprehensive confidence level is calculated according to the preset weight ratio. If the comprehensive confidence level exceeds the preset confidence level, it is determined to be a valid lateral recumbent signal, and an adjustment command is issued. If it does not exceed the preset confidence level, the current state is maintained and the next round of sampling verification is started.

[0043] Specifically, when the first, second, and third conditions are met simultaneously, the overall confidence level is calculated according to the preset weight ratio. If the calculated overall confidence level exceeds the preset confidence level, the current state is identified as a valid side-lying signal. Otherwise, if the overall confidence level does not exceed the preset confidence level, the next round of sampling verification is performed through the sleeping posture adaptive pillow, thereby realizing the sleeping posture judgment.

[0044] The preset weighting ratio is as follows: the first condition accounts for 40%, the second condition accounts for 30%, and the third condition accounts for 30%.

[0045] Specifically, the preset weight ratio can be set to 40% for the first condition, 30% for the second condition, and 30% for the third condition. Of course, the preset weight ratio can also be adjusted according to the actual situation. This method does not impose any restrictions on the weight ratio.

[0046] The preset reliability can be set to 85%.

[0047] Specifically, when the overall confidence level is greater than 85%, it is determined to be a valid side-lying signal; otherwise, the current state is maintained and resampling is performed using a sleeping posture adaptive pillow.

[0048] In this embodiment, the pressure in the cochlear region, the superior cochlear region, and the anterior inferior cochlear region, as well as the head contact surface, are obtained using a posture-adaptive pillow. A first ratio of the average pressure in the cochlear region to that in the superior cochlear region is calculated. If the first ratio is greater than a first preset ratio, the first condition is met. A second ratio of the average pressure in the superior cochlear region and the anterior inferior cochlear region is calculated. If the second ratio is greater than or equal to a second preset ratio, the second condition is met. The coordinates of the pressure distribution center on the head contact surface are calculated using a weighted average method. The coordinates of the maximum pressure point are detected, and the linear coordinates between the maximum pressure point and the pressure distribution center coordinates are calculated to obtain the pressure center offset. If the pressure center offset is greater than or equal to 1 / 3 of the equivalent radius of the head contact surface, the third condition is met. When the first, second, and third conditions are met simultaneously, a comprehensive confidence level is calculated according to a preset weight ratio. If the confidence level exceeds a preset level, it is determined to be a valid side-lying signal, and an adjustment command is issued. If the confidence level does not exceed the preset level, the current state is maintained, and the next round of sampling verification is initiated. This achieves accurate judgment of the sleeping posture, facilitating subsequent sleeping posture adjustment.

[0049] In one embodiment, such as Figure 5 As shown, a method for adjusting the sleeping posture using a posture-adaptive pillow is provided. This method employs a posture-adaptive pillow as described above and adjusts the sleeping posture based on the judgment result of the aforementioned sleeping posture judgment method. The method includes the following steps:

[0050] Step S510: Detect the current operating mode of the sleeping posture adaptive pillow. The operating modes include side-lying intervention mode and balance mode.

[0051] Specifically, when using a sleep posture adaptive pillow to adjust a sleeper's posture based on the aforementioned sleep posture judgment method, the pillow's current operating mode is first detected. This operating mode includes a side-lying intervention mode and a balance mode. The side-lying intervention mode is designed for patients with obstructive sleep apnea (OSA) and allows for side-lying intervention; the balance mode adjusts sleep posture for those with spinal health.

[0052] Step S520: If it is the lateral intervention mode, the lateral position duration is determined. When the duration of the lateral position exceeds the preset time threshold and the pressure fluctuation frequency is less than the preset frequency for a set period, and the overall confidence level is greater than the confidence threshold, the pressure ratio of the cochlear region, the upper cochlear region and the anterior inferior cochlear region is adjusted to the first set pressure ratio by the height adjustment actuator.

[0053] Specifically, when the sleeping posture adaptive pillow is in lateral intervention mode, the duration of lateral position is determined, including: lateral position duration, pressure fluctuation frequency, and overall confidence level. When the lateral position duration exceeds a preset time threshold (e.g., 10 minutes); the pressure fluctuation frequency is less than 0.1 Hz (normal respiratory rate 0.2-0.33 Hz) for a set duration (e.g., three minutes); and the overall confidence level is greater than a confidence threshold (which can be set to 90%), the pressure ratio of the cochlear region, the superior cochlear region, and the anterior inferior cochlear region is adjusted to a first preset pressure ratio using a height adjustment actuator. This first preset pressure ratio can be set to 2.5:1.8:1. Through precise control of the three-order gradient pressure in the cochlear region, height adjustment of the target area is achieved, enabling lateral intervention for OSA patients. This effectively expands the pharyngeal cavity cross-sectional area, reduces the range of blood oxygen saturation fluctuations, and enhances blood oxygen stability.

[0054] In step S530, if it is in balance mode, when the pressure center offset is less than 1 / 5 of the equivalent radius of the head contact surface, the pressure ratio of the cochlear region, the upper cochlear region and the lower anterior cochlear region is adjusted to the second set pressure ratio by the height adjustment actuator.

[0055] Specifically, when the posture-adaptive pillow is in balance mode, the trigger condition is either the system default start or the side-lying intervention mode is deactivated. When the pressure center offset is less than 1 / 5 of the equivalent radius of the head contact surface, the pressure ratio of the cochlear area, the upper cochlear area, and the anterior and inferior cochlear area is adjusted to a second set pressure ratio through the height adjustment actuator. The second set pressure ratio can be set to 1.2:1.1:1, which significantly reduces the peak stress of the cervical intervertebral disc, significantly reduces the probability of stiff neck, and improves sleep quality.

[0056] In this embodiment, the current operating mode of the posture-adaptive pillow is detected, including a side-lying intervention mode and a balance mode. In the side-lying intervention mode, the duration of the side-lying position is determined. When the duration of the side-lying position exceeds a preset time threshold, and the pressure fluctuation frequency is less than a preset frequency for a certain period of time, and the overall confidence level is greater than the confidence threshold, the pressure ratio of the cochlear region, the superior cochlear region, and the anterior inferior cochlear region is adjusted to a first preset pressure ratio by the height adjustment actuator. In the balance mode, when the pressure center offset is less than 1 / 5 of the equivalent radius of the head contact surface, the pressure ratio of the cochlear region, the superior cochlear region, and the anterior inferior cochlear region is adjusted to a second preset pressure ratio by the height adjustment actuator. By precisely adjusting the sleeping posture, side-lying intervention is achieved for OSA patients, effectively reducing apnea time, improving blood oxygen stability, protecting spinal health, and improving sleep quality.

[0057] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0058] The above descriptions are merely embodiments of the present invention. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of the present invention. These should also be considered within the scope of protection of the present invention, and will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A sleeping posture adaptive pillow, characterized in that, include: A pillow, a pressure matrix sensing system and a height adjustment actuator disposed inside the pillow; The pressure matrix sensing system is connected to the height adjustment actuator and is located above the height adjustment actuator; The pressure matrix sensing system includes a pressure sensing matrix composed of several sensing unit arrays, which is used to perform pressure sampling to generate a pressure distribution map, identify and locate anatomical points of head and face features through the pressure distribution map, and determine sleeping posture. The anatomical points include the cochlear region, the upper cochlear region, and the anterior and inferior cochlear region. The sleep posture determination includes: obtaining the pressure in the cochlear region, the upper cochlear region, and the anterior and inferior cochlear region, as well as the head contact surface, through the sleep posture adaptive pillow; Calculate a first ratio of the average pressure in the cochlear region to the average pressure in the superior cochlear region, and determine that the first condition is met when the first ratio is greater than or equal to a first preset ratio. Calculate a second ratio between the average pressure in the superior cochlear region and the average pressure in the anterior inferior cochlear region. If the second ratio is greater than or equal to a second preset ratio, the second condition is deemed to be met. The pressure distribution center coordinates of the head contact surface are calculated based on the weighted average method. The coordinates of the maximum pressure point are detected, and the straight-line distance between the coordinates of the maximum pressure point and the coordinates of the pressure distribution center is calculated to obtain the pressure center offset. When the pressure center offset is greater than or equal to 1 / 3 of the equivalent radius of the head contact surface, the third condition is determined to be met. When the first condition, the second condition, and the third condition are met simultaneously, the overall confidence level is calculated according to a preset weight ratio. When the overall confidence level exceeds the preset confidence level, it is determined to be a valid lateral recumbent signal. The height adjustment actuator uses 17-zone linked airbags for height adjustment. Each airbag is equipped with an independent air pump and a piezoelectric proportional valve, which is used to perform gradient pressure adjustment on the corresponding areas of the cochlear region, the upper cochlear region, and the anterior inferior cochlear region according to the detection results of the pressure matrix sensing system.

2. The sleeping posture adaptive pillow according to claim 1, characterized in that, The sensing unit comprises 2250 units, each 10×10mm in size, forming a 50×45 array pressure matrix.

3. The sleeping posture adaptive pillow according to claim 1, characterized in that, The cochlear region is the area centered on the concha cavity and within a preset radius; the upper cochlear region is the area defined by a preset side length at a first preset distance directly above the cochlear region; the lower anterior cochlear region is the area defined by a preset side length at a second preset distance in front of the cochlea and a third preset distance below it.

4. The sleeping posture adaptive pillow according to claim 1, characterized in that, The 17-zone linkage airbag includes five rows of airbags arranged longitudinally inside the pillow, with five airbags in the center row and three airbags in each of the four rows on both sides.

5. A method for determining sleeping posture in a posture-adaptive pillow, characterized in that, This is achieved using a sleeping posture adaptive pillow as described in any one of claims 1-4, comprising the following steps: The sleeping posture adaptive pillow obtains pressure in the cochlear region, the upper cochlear region, and the anterior and inferior cochlear region, as well as the head contact surface. Calculate a first ratio of the average pressure in the cochlear region to the average pressure in the superior cochlear region, and determine that the first condition is met when the first ratio is greater than or equal to a first preset ratio. Calculate a second ratio between the average pressure in the superior cochlear region and the average pressure in the anterior inferior cochlear region. If the second ratio is greater than or equal to a second preset ratio, the second condition is deemed to be met. The pressure distribution center coordinates of the head contact surface are calculated based on the weighted average method. The coordinates of the maximum pressure point are detected, and the straight-line distance between the coordinates of the maximum pressure point and the coordinates of the pressure distribution center is calculated to obtain the pressure center offset. When the pressure center offset is greater than or equal to 1 / 3 of the equivalent radius of the head contact surface, the third condition is determined to be met. When the first, second, and third conditions are met simultaneously, the overall confidence level is calculated according to a preset weight ratio. If the overall confidence level exceeds the preset confidence level, it is determined to be a valid lateral recumbent signal, and an adjustment command is issued. If it does not exceed the preset confidence level, the current state is maintained and the next round of sampling verification is started.

6. The method for determining sleeping posture in a posture-adaptive pillow according to claim 5, characterized in that, The preset weighting ratio is as follows: the first condition accounts for 40%, the second condition accounts for 30%, and the third condition accounts for 30%.

7. The method for determining sleeping posture in a posture-adaptive pillow according to claim 5, characterized in that, The preset confidence level is 85%.

8. A method for adjusting sleeping posture using a posture-adaptive pillow, characterized in that, The method employs a sleeping posture adaptive pillow as described in any one of claims 1-4, and adjusts the sleeping posture based on the judgment result of the sleeping posture judgment method as described in any one of claims 5-7, including the following steps: The current operating mode of the sleeping posture adaptive pillow is detected, including a side-lying intervention mode and a balance mode; If it is the lateral intervention mode, the lateral position duration is determined. When the lateral position duration exceeds the preset time threshold and the pressure fluctuation frequency is less than the preset frequency for a set duration, and the overall confidence level is greater than the confidence threshold, the pressure ratio of the cochlear area, the upper cochlear area and the anterior and inferior cochlear area is adjusted to the first preset pressure ratio by the height adjustment actuator. In balanced mode, when the pressure center offset is less than 1 / 5 of the equivalent radius of the head contact surface, the pressure ratio of the cochlear region, the upper cochlear region, and the lower anterior cochlear region is adjusted by the height adjustment actuator to a second set pressure ratio.

9. The method for adjusting the sleeping posture of a posture-adaptive pillow according to claim 8, characterized in that, The first set pressure ratio is 2.5:1.8:1, and the second set pressure ratio is 1.2:1.1:1.

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