An adaptive pillow

Abstract

The utility model relates to a kind of self-adaptive pillows, belong to daily necessities technical field.It includes pillow body and air bag, pillow body is located in the upper of air bag, including the control mechanism for automatically adjusting pillow height, control mechanism includes air pump, solenoid valve, air pressure sensor and controller, air pump is supplied with air for air bag by gas supply line, one-way valve is equipped on gas supply line, solenoid valve is set on exhaust line, air bag is discharged by exhaust line;Air pressure sensor is used to measure the pressure of gas in the air bag and the collected electric signal is transmitted to controller, and controller controls solenoid valve and air pump action according to the received electric signal.The utility model detects the pressure of air bag in self-adaptive pillow corresponding to different sleeping posture by air pressure sensor, determines sleeping posture state, and controller receives electric signal to control the opening and closing of air pump and solenoid valve, to realize the self-adaptive adjustment of pillow, prevent falling pillow, obtain better protection neck and shoulder effect, and improve sleep.

Description

Technical Field

[0001] This utility model relates to an adaptive pillow, belonging to the field of daily necessities technology. Background Technology

[0002] Human anatomy dictates that supine and side-lying sleep require pillows with different support heights. Currently available electric adaptive pillows (or smart pillows) can meet the requirement of automatically adjusting support height to adapt to different sleeping positions. However, these pillows have the following shortcomings: For example, a pillow patent application (application number 2021113987628) requires a thin-film pressure sensor to be placed on the shoulder or under the back to determine sleeping posture. This degrades the pillow's appearance and comfort. Furthermore, the thin-film pressure sensor may detach or shift, causing the pillow's adaptive adjustment to fail. Some pillows also incorporate an inflation / deflation system using a differential pressure switch, which is inconvenient to adapt to and affects the pillow's adaptive control. Summary of the Invention

[0003] This invention addresses the shortcomings of existing technologies by providing an adaptive pillow.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: An adaptive pillow includes a pillow body and an air bladder. The pillow body is located above the air bladder and includes a control mechanism for automatically adjusting the height of the pillow. The control mechanism includes an air pump, a solenoid valve, an air pressure sensor, and a controller. The air pump supplies air to the air bladder through an air supply pipeline. A one-way valve is provided on the air supply pipeline. The solenoid valve is located on an exhaust pipeline, and the air bladder is deflated through the exhaust pipeline.

[0005] The pressure sensor is used to measure the pressure of the gas inside the airbag and transmit the collected electrical signal to the controller. The controller controls the solenoid valve and air pump to operate according to the received electrical signal.

[0006] The beneficial effects of this invention are as follows: By detecting the pressure of the air bladder inside the adaptive pillow corresponding to different sleeping positions using a pressure sensor, the sleeping position is accurately determined. The pressure signal is converted into an electrical signal, and then the controller controls the opening and closing of the air pump and solenoid valve, such as controlling the air pump to inflate or close, and controlling the solenoid valve to deflate or close, thereby achieving adaptive adjustment of the pillow. This adaptive pillow is easy to set up, suitable for a wider range of people, and can avoid deviations in the appropriate height caused by changes in ambient temperature or slow deflation of the air bladder. The adaptive action is reliable, the adaptation setting is simple to operate, the adjustment accuracy is high, the adaptive adjustment process is stable, the inflation / deflation volume during the adaptive adjustment process is small, the time is short, the energy-saving effect is good, it prevents stiff neck, obtains better protection for the neck and shoulders, and improves sleep.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the airbag is provided with an air passage interface, which is connected to the air supply line and the exhaust line through a T-connector.

[0009] The advantage of adopting the above-mentioned further solution is that only one tube needs to be led out of the airbag. The T-connector ensures that the gas can be smoothly switched between the supply and exhaust tubes, while ensuring stable gas pressure inside the airbag. When the controller receives the electrical signal from the air pressure sensor and determines that the gas pressure inside the airbag needs to be adjusted, it will quickly control the opening or closing of the exhaust tube and start or stop the air pump through the solenoid valve, thereby achieving precise adjustment of the pillow height.

[0010] Furthermore, the gas supply line is also equipped with a silencer airbag.

[0011] The beneficial effect of adopting the above-mentioned further solution is that the silencer airbag can reduce the noise of the air pump.

[0012] Furthermore, the controller also includes a memory for storing adaptive pressure settings information.

[0013] The beneficial effect of adopting the above-mentioned further solution is that the adaptive pressure setting information is preset according to the user's personal preferences and physical characteristics, such as the user's height, weight, and sleeping posture. When the user uses the pillow, the controller reads the adaptive pressure setting information from the memory and controls the gas pressure in the airbag to reach the preset value, thereby providing the user with the most comfortable sleep experience.

[0014] Furthermore, it also includes a muffler box, and the control mechanism is disposed inside the muffler box.

[0015] The beneficial effect of adopting the above-mentioned further solution is that the sound-absorbing box can effectively isolate the noise generated by components such as the controller and air pump, further improving the user's sleep environment. The sound-absorbing box has excellent sound insulation performance, which can significantly reduce the noise during the operation of the device, making the pillow quieter during use.

[0016] Furthermore, the pillow also includes a pillowcase, which wraps around the outside of the pillow body and the air bladder, and the control mechanism is located outside or inside the pillowcase.

[0017] The beneficial effects of adopting the above-mentioned further solution are that the pillowcase not only protects the pillow body and air bladder, limits the deformation range of the air bladder, and achieves self-adjustment throughout the entire length of the pillow, but also provides additional comfort and ease of cleaning, making it convenient to wash and maintain the cleanliness and hygiene of the pillow. The control mechanism can be located on the outside or inside of the pillowcase according to individual needs, taking into account both the user's actual usage needs and the aesthetics and practicality of the product.

[0018] Furthermore, based on the different electrical signal thresholds of the air pressure sensor, the controller is configured with the following settings: the air pump shut-off pressure P0 corresponding to the pillow's initial unloaded pressure; the air pump restart pressure P1 ensuring P0; the air pump restart pressure Pq maintaining the side-lying height; the air pump shut-off pressure Pc corresponding to the appropriate side-lying height being adjustable; the solenoid valve release pressure Pf required for side / supine sleeping position transition; and the solenoid valve shut-off pressure Py corresponding to the appropriate supine height being adjustable. The above-mentioned pressure thresholds satisfy the conditions Pc>Pq, Py>Pq, Pf>Pc, Pf>Py, and P0>P1.

[0019] The beneficial effects of adopting the above-mentioned further solution are that the controller sets an air pressure threshold Pc (air pump shut-off pressure, abbreviated as Pc) and a restart pressure threshold Pq (abbreviated as Pq) corresponding to the appropriate height for side-lying position, where Pc is set to be adjustable; the controller also sets an air pressure threshold Py (solenoid valve shut-off pressure, abbreviated as Py) corresponding to the appropriate height for supine position and a pressure threshold Pf (abbreviated as Pf) for side-lying to supine position, where Py is set to be adjustable. When the pillow user is lying on their side, the appropriate height is achieved by adjusting the adaptation setting through Pc; when changing from side-lying to supine position, the pressure of the airbag increases. The air pressure sensor sends a corresponding electrical signal. When the airbag pressure reaches Pf, the controller sends a command to the solenoid valve to release air. The solenoid valve releases air, the pillow's support height decreases, and when the airbag pressure decreases to Py, the solenoid valve closes. When changing from a supine to a side-lying position, the airbag pressure decreases significantly, falling below Pq. The corresponding electrical signal is sent to the controller to start the air pump, causing the flattened airbag to expand. The airbag inflates to the appropriate pressure Pc for the side-lying position, and the air pump shuts off. The controller sets an initial air pressure threshold P0 (P0 for no load) and an air pump restart pressure threshold P1 (P1 for no load). When the pillow is in an unloaded state, the airbag pressure will be significantly lower than Pq. If the airbag pressure is less than P1, the air pump will restart. When the airbag pressure reaches P0, the air pump shuts off, maintaining a certain initial pressure in the airbag. To achieve the above inflation / deflation switching and avoid simultaneous inflation and deflation, the set air pressure on the controller meets the following conditions: Pc>Pq, Py>Pq, Pf>Pc, Pf>Py, P0>P1. This setting facilitates adaptation and avoids frequent pump starts under suitable side-lying height conditions with relatively small errors. When the conditions Py>Pq and Pf>Pc are met, it prevents the solenoid valve from releasing air when the pump starts.

[0020] Furthermore, it also includes a muffler box, the control mechanism is disposed inside the muffler box, and the muffler box is provided with a Pc adjustment key and a Pc memory key; the muffler box is provided with a Py adjustment key and a Py memory key.

[0021] The beneficial effects of adopting the above-mentioned further solution are as follows: When the pillow user is lying on their side, the Pc adjustment key adapts to the setting, and when a suitable height is reached, the memory key confirms Pc. The Pc adjustment key allows users to easily adjust the air pump shut-off pressure Pc corresponding to the suitable side-lying height to accommodate different users' side-lying preferences. The Pc memory key saves the user's last set Pc value, eliminating the need for readjustment each time, thus improving ease of use. Similarly, when the pillow user is lying on their back, the Py adjustment key adapts to the setting, and when a suitable height is reached, the memory key confirms Py. The Py adjustment key allows users to adjust the solenoid valve shut-off pressure Py corresponding to the suitable supine height, meeting personalized needs. The Py memory key ensures that the user's set Py value is remembered, simplifying the operation process. The design of the silencer box not only effectively reduces the noise of the control mechanism during operation, improving the user's sleep experience, but also features a reasonable layout of adjustment and memory keys, making operation intuitive and further enhancing the product's user experience. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a block diagram illustrating the control principle of the controller of this utility model;

[0024] Figure 3 This is a block diagram illustrating the power supply principle of the present invention.

[0025] Figure 4 A schematic diagram of a pillow using an air bladder assembly;

[0026] Figure 5 A schematic diagram of a pillow with a double-layered air bladder;

[0027] In the diagram, 1. Pillow body; 2. Airbag; 3. Air pump; 4. Solenoid valve; 5. One-way valve; 6. Silencing airbag; 7. Air supply line; 8. Exhaust line; 9. Airbag width adjuster; 91. Upper slat; 92. Lower slat; 93. Height limiter. Detailed Implementation

[0028] The principles and features of this utility model are described below with reference to examples. The examples are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0029] As shown in the figure, an adaptive pillow includes a pillow body 1 and an air bladder 2. The pillow body 1 is located above the air bladder 2 and includes a control mechanism for automatically adjusting the pillow height. The control mechanism includes an air pump 3, a solenoid valve 4, an air pressure sensor, and a controller. The air pump 3 supplies air to the air bladder 2 through an air supply pipe 7. A one-way valve 5 is provided on the air supply pipe 7. The solenoid valve 4 is provided on an exhaust pipe 8, and the air bladder 2 is deflated through the exhaust pipe 8.

[0030] The pressure sensor is used to measure the pressure of the gas inside the airbag 2 and transmit the collected electrical signal to the controller. The controller controls the operation of the solenoid valve 4 and the air pump 3 according to the received electrical signal. Figure 1 Point P in the middle is the pressure detection position of the air pressure sensor. To ensure the accuracy of air pressure measurement, interfaces need to be set at different positions of the airbag 2, such as the interface for connecting to the measuring tube, and the interface for connecting to the air supply line and the exhaust line.

[0031] The airbag 2 is equipped with an air passage interface, which connects to the air supply line 7 and the exhaust line 8 via a T-connector. Only one line needs to be led out from the airbag 2. The T-connector ensures smooth gas transfer between the air supply line 7 and the exhaust line 8, while maintaining stable gas pressure within the airbag 2. When the controller receives an electrical signal from the pressure sensor and determines that the gas pressure within the airbag 2 needs adjustment, it quickly controls the opening or closing of the exhaust line 8 via the solenoid valve 4, and starts or stops the air pump 3, thereby achieving precise adjustment of the pillow height.

[0032] The air supply line 7 is also equipped with a noise-reducing airbag 6. The noise-reducing airbag 6 can reduce the noise of the air pump 3.

[0033] The controller also includes a memory for storing adaptive pressure settings. These settings are preset based on the user's personal preferences and physical characteristics, such as height, weight, and sleeping posture. When the user uses the pillow, the controller reads the adaptive pressure settings from the memory and controls the gas pressure within the airbag 2 to reach the preset value, thereby providing the user with the most comfortable sleep experience.

[0034] It also includes a sound-absorbing box, within which the control mechanism is housed. The sound-absorbing box effectively isolates noise generated by components such as the controller and air pump 3, further improving the user's sleep environment. The sound-absorbing box has excellent sound insulation performance, significantly reducing noise during device operation, making the pillow quieter during use.

[0035] The pillow also includes a pillowcase, which covers the pillow body 1 and the air bladder 2. The control mechanism is located either outside or inside the pillowcase. The pillowcase not only protects the pillow body 1 and the air bladder 2, limiting the air bladder's deformation range and enabling adaptive adjustment throughout the pillow's length, but also provides additional comfort and ease of cleaning, making it convenient to wash and maintain the pillow's hygiene. The control mechanism can be located either outside or inside the pillowcase according to individual needs, taking into account both the user's actual usage requirements and the product's aesthetics and practicality.

[0036] Based on the different electrical signal thresholds of the air pressure sensor, the controller is configured with the following settings: the air pump 3 shut-off pressure P0 corresponding to the pillow's initial unloaded pressure; the air pump 3 restart pressure P1 ensuring P0; the air pump 3 restart pressure Pq maintaining the side-lying height; the air pump 3 shut-off pressure Pc corresponding to the appropriate side-lying height being adjustable; the solenoid valve 4 release pressure Pf required for side / supine sleeping position switching; and the solenoid valve 4 shut-off pressure Py corresponding to the appropriate supine height being adjustable. The above-mentioned pressure thresholds satisfy the conditions Pc>Pq, Py>Pq, Pf>Pc, Pf>Py, and P0>P1. The controller sets the appropriate air pressure threshold Pc (air pump 3 shut-off pressure, abbreviated as Pc) and restart pressure threshold Pq (abbreviated as Pq) for the suitable height when lying on the side, with Pc being adjustable. The controller also sets the appropriate air pressure threshold Py (solenoid valve 4 shut-off pressure, abbreviated as Py) for the suitable height when lying on the back, and the pressure threshold Pf (abbreviated as Pf) for changing from side to back position, with Py being adjustable. When the pillow user is lying on their side, the appropriate height is achieved by adjusting the Pc setting. When changing from side to back position, the pressure of airbag 2 increases, and the air pressure sensor sends a corresponding electrical signal. When the pressure of airbag 2 reaches Pf, the controller will issue a deflation command to solenoid valve 4, causing solenoid valve 4 to deflate and the pillow's support height to decrease. When the pressure of airbag 2 decreases to Py, solenoid valve 4 closes. When changing from supine to side-lying position, the pressure of airbag 2 decreases significantly, falling below Pq. The corresponding electrical signal is sent to the controller to start air pump 3, causing the flattened airbag 2 to expand and inflate to the appropriate pressure Pc for the side-lying position. Air pump 3 then shuts off. The controller sets an initial air pressure threshold P0 (P0 for no load) and a restart pressure threshold P1 (P1 for no load) for air pump 3. When the pillow is in an unloaded state, the air pressure of airbag 2 will be significantly lower than Pq. If the pressure of airbag 2 is less than P1, air pump 3 will restart. When the pressure of airbag 2 reaches P0, air pump 3 shuts off, maintaining a certain initial pressure for airbag 2. To achieve the above inflation / deflation switching and avoid simultaneous inflation and deflation, the set air pressure on the controller meets the following conditions: Pc>Pq, Py>Pq, Pf>Pc, Pf>Py, P0>P1. This setting facilitates adaptation and avoids frequent starting of the air pump 3 under conditions where there is a small error in the appropriate side-lying height. When the conditions Py>Pq and Pf>Pc are met, the solenoid valve 4 is prevented from releasing air when the air pump 3 starts.

[0037] The system also includes a silencer box, within which the control mechanism is housed. The silencer box features a Pc adjustment button and a Pc memory button; it also features a Py adjustment button and a Py memory button. When the user is lying on their side, the Pc adjustment button is used to adjust the setting, and the memory button confirms the Pc setting when the desired height is reached. The user can easily adjust the air pump 3 shut-off pressure Pc corresponding to the desired side-lying height using the Pc adjustment button, adapting to different users' side-lying preferences. The Pc memory button saves the user's previously set Pc value, eliminating the need for readjustment each time, thus improving ease of use. Similarly, when the user is lying on their back, the Py adjustment button is used to adjust the setting, and the memory button confirms the Py setting when the desired height is reached. The Py adjustment button allows the user to adjust the solenoid valve 4 shut-off pressure Py corresponding to the desired back-lying height, meeting personalized needs. The Py memory button ensures that the user's set Py value is remembered, simplifying the operation process. The silencer box design not only effectively reduces the noise of the control mechanism during operation, improving the user's sleep experience, but also features a logically arranged and intuitive layout of adjustment and memory buttons, further enhancing the product's user experience.

[0038] The adaptive pillow includes a pillow body 1, an air bladder 2, a pillowcase, and a control mechanism. The pillowcase is placed on top of the air bladder 2, covering both the pillow body 1 and the air bladder 2. The controller is located outside or inside the pillowcase. The control mechanism includes an air pump 3, a solenoid valve 4, an air pressure sensor, a controller, a one-way valve 5, a silencer air bladder 6, a silencer box, and a power supply. The air outlet of the air pump 3 is connected in series with the one-way valve 5 and the silencer air bladder 6 via a flexible hose. When a person sleeps, the pressure of the head on the pillow follows this pattern: at a suitable height, the pressure of the head on the pillow is equal to the weight of the head; above a suitable height, the pressure of the head on the pillow is greater than the weight of the head; conversely, below a suitable height, the pressure of the head on the pillow is less than the weight of the head.

[0039] The air pressure sensor converts the pressure of different airbags 2 corresponding to different sleeping positions into corresponding electrical signals. The controller sets the air pressure threshold Pc corresponding to the appropriate height for side lying and the restart pressure threshold Pq, where Pc is adjustable. The silencer box has a Pc adjustment key and a Pc memory key. The controller also sets the air pressure threshold Py corresponding to the appropriate height for supine lying and the pressure threshold Pf for turning from side lying to supine lying. Py is adjustable, and the silencer box has a Py adjustment key and a Py memory key. The power supply provides power to the air pump 3, solenoid valve 4, air pressure sensor and controller of the control mechanism. The one-way valve 5 is connected to the air outlet of the air pump 3 to prevent gas leakage from the airbag 2 through the air pump 3. The controller circuit has a memory that can store the adapted setting pressure information. When the user is lying on their side, the Pc adjustment key is used to adjust the height. Once a suitable height is reached, the Pc memory key is used to confirm the Pc setting, for example, setting Pc=800Pa. When changing from side-lying to supine, the pressure of airbag 2 increases, and the pressure sensor sends a corresponding electrical signal. When the pressure of airbag 2 reaches Pf, for example, setting Pf=950Pa, the controller will control solenoid valve 4 to release air, and the pillow's support height will decrease. When the pressure of airbag 2 decreases to Py, for example, Py=780Pa, solenoid valve 4 closes. When changing from supine to side-lying, the pressure of airbag 2 decreases significantly, becoming less than Pq, for example, P... When q < 750Pa, the corresponding electrical signal triggers the controller to start the air pump 3, inflating the flattened airbag 2 to the appropriate pressure Pc for a suitable side-lying position. The air pump 3 then shuts off. The controller sets an initial air pressure threshold P0 for no-load conditions (e.g., P0 = 300Pa) and a restart pressure threshold P1 for no-load conditions (e.g., P1 = 250Pa). When the pillow is unloaded, the air pressure in the airbag 2 will be significantly lower than Pq. When the airbag 2 pressure is less than P1, the air pump 3 starts. When the airbag 2 pressure reaches P0, the air pump 3 shuts off, maintaining a certain initial pressure in the airbag 2. To achieve the above inflation / deflation conversion and avoid simultaneous inflation and deflation, the set air pressure on the controller must meet the following conditions: Pc > Pq, Py > Pq, Pf > Pc, Pf > Py, P0 > P1.

[0040] The airbag 2 can also be an airbag 2 assembly. For example... Figure 4As shown, the airbag 2 assembly includes an airbag 2, and a pair of airbag 2 width adjusters are provided on the airbag 2. The airbag 2 width adjuster includes an elastic thin plate assembly, which includes two elastic thin plate strips, namely an upper strip 91 and a lower strip 92. The upper strip 91 and the lower strip 92 are hinged to one side. The elastic thin plate assembly is fixedly connected to the airbag 2. The airbag 2 width adjuster also includes a height limiting band 93, which is made of flexible material and is connected to the two free edges of the elastic thin plate assembly, so as not to hinder the inflation and deflation of the airbag. When the airbag assembly is used to change from a side-lying to a supine position, the airbag is flattened, and the effective area of ​​the air pressure acting on the pillow body is reduced. The air pressure Py corresponding to the appropriate height when lying supine is closer to the air pressure Pc corresponding to the appropriate height when lying side-lying, thus reducing the deviation of the appropriate height between side-lying and supine positions.

[0041] The airbag 2 can be a single airbag 2, a double-layer airbag 2, or a multi-layer airbag. For example... Figure 5 As shown, the airbag 2 is a double-layered airbag 2, with adjacent airbags connected. By using double-layered or multi-layered airbags, the effective area of ​​the pillow body changes relatively little when the airbags are compressed from a side-lying to a supine position.

[0042] This invention uses a pressure sensor to detect the pressure of the air bladder 2 inside the adaptive pillow corresponding to different sleeping positions, accurately determining the sleeping position. The pressure signal is converted into an electrical signal, and then the controller controls the opening and closing of the air pump 3 and the solenoid valve 4 to achieve adaptive adjustment of the pillow. This not only makes it easy to set up and suitable for a wider range of people, but also avoids deviations in the appropriate height caused by changes in ambient temperature or slow deflating of the air bladder 2. The adaptive action is reliable, the adaptation setting is simple to operate, the adjustment accuracy is high, the adaptive adjustment process is smooth, the noise is low, the inflation / deflation volume during the adaptive adjustment process is small, the time is short, the energy-saving effect is good, it prevents stiff neck, provides better protection for the neck and shoulders, and improves sleep.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adaptive pillow, comprising a pillow body (1) and an air bladder (2), wherein the pillow body (1) is disposed above the air bladder (2), characterized in that, It also includes a control mechanism for automatically adjusting the pillow height. The control mechanism includes an air pump (3), a solenoid valve (4), an air pressure sensor and a controller. The air pump (3) supplies air to the airbag (2) through an air supply line (7). A one-way valve (5) is provided on the air supply line (7). The solenoid valve (4) is provided on the exhaust line (8). The airbag (2) is deflated through the exhaust line (8). The pressure sensor is used to measure the pressure of the gas inside the airbag (2) and transmit the collected electrical signal to the controller. The controller controls the operation of the solenoid valve (4) and the air pump (3) according to the received electrical signal.

2. The adaptive pillow according to claim 1, characterized in that, The airbag (2) is provided with an air passage interface, which is connected to the air supply line (7) and the exhaust line (8) through a three-way connector.

3. The adaptive pillow according to claim 1, characterized in that, The gas supply pipeline (7) is also equipped with a silencer airbag (6).

4. The adaptive pillow according to claim 1, characterized in that, The controller also includes a memory for storing adaptive pressure settings information.

5. The adaptive pillow according to claim 1, characterized in that, It also includes a muffler box, and the control mechanism is located inside the muffler box.

6. The adaptive pillow according to any one of claims 1-5, characterized in that, The pillow also includes a pillowcase, which wraps around the outside of the pillow body (1) and the air bladder (2), and the control mechanism is located outside or inside the pillowcase.

7. The adaptive pillow according to any one of claims 1-4, characterized in that, According to the different electrical signal thresholds of the air pressure sensor, the controller is set as follows: the closing pressure P0 of the air pump (3) corresponding to the pillow's initial unloaded pressure; the restart pressure P1 of the air pump (3) that ensures P0; the restart pressure Pq of the air pump (3) that maintains the side-lying height; the closing pressure Pc of the air pump (3) corresponding to the appropriate side-lying height is set to be adjustable; the air release pressure Pf of the solenoid valve (4) required for the side / supine sleeping position conversion; and the closing pressure Py of the solenoid valve (4) corresponding to the appropriate supine height is set to be adjustable. The above-mentioned pressure thresholds satisfy the conditions Pc>Pq, Py>Pq, Pf>Pc, Pf>Py and P0>P1.

8. The adaptive pillow according to claim 7, characterized in that, It also includes a muffler box, the control mechanism is located inside the muffler box, and the muffler box is provided with a Pc adjustment key and a Pc memory key; the muffler box is provided with a Py adjustment key and a Py memory key.

9. The adaptive pillow according to claim 1, characterized in that, It also includes a power supply, which powers the air pump (3), solenoid valve (4), air pressure sensor and controller.

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