Multi-airbag pillow air valve assembly, air pillow and control method of multi-airbag pillow air valve assembly

Abstract

The multi-airbag pillow air valve assembly is provided with at least two air valves, and a valve head comprises a port P and a port A; the P1 branch gas path and the P2 branch gas path of the P port are conducted; a port A of the QFA air valve is used for being connected with an external air source. The P1 port of the QFA air valve and the P1 port of the QFB air valve are used for being connected with an external air bag. The multiple air valves are combined to save space, the air path connection relation is optimized, and independent control over the multiple air bags is facilitated. According to the dual-purpose air pillow based on the components and the control method, the dual-purpose air pillow can be used for stopping snore and adjusting the height; in the height lifting control mode, the multiple air bags are cooperatively inflated or deflated for height control; in the snore stopping mode, according to an external instruction, independent inflation and deflation control can be carried out on a specified air bag. In the air pillow, the key air bag can be identified according to the pressure data of the pressure sensor or the pressure sensor array in the air bag, higher-quality pressure data sampling is carried out on the internal pressure of the key air bag, and a data basis is provided for subsequent deep and detailed pressure data application.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of pillow devices, and particularly relates to a multi-air-chamber pillow air valve assembly, a multi-air-chamber pillow assembly with pressure detection, and a multi-air-chamber pressure detection pillow. BACKGROUND

[0002] The simplest air-chamber pillow in the prior art is mostly in a single air-chamber state, and the control process of inflation and deflation is relatively simple. With increasing requirements for pillows, it is necessary to control and adjust the height of the pillow and to perform snore stopping and other operations, and it is necessary to finely control the state of the air chamber.

[0003] In the snore-stopping pillow in the prior art, there are pillows with multiple air chambers, and the multiple air chambers are simultaneously controlled in terms of inflation and deflation and pressure detection, and the connection relationship of the air path is relatively complex. Moreover, the space of the pillow is very limited, and it is challenging to separately control the air path of the integrated multiple air chambers in the limited space.

[0004] As Figure 24 is the connection mode in the prior art, the air valve is separately arranged, and it is difficult to flexibly combine the design.

[0005] In order to maintain a certain flexibility and maintain the separate air path control of each air chamber, the connection relationship on the air path becomes more complex, and the separated components are more, which poses a challenge to the structure of the pillow, especially the connection relationship of the air path; how to design a combined and flexible air valve assembly is a technical problem to be solved by the present application.

[0006] There is no dual-purpose air pillow that can stop snoring and control the overall height in the prior art. The air path connection and control mode of the dual-purpose air pillow needs to consider both use states, and also needs to consider the balance of noise and power.

[0007] There is no pillow air chamber pressure detection-based deeper physiological signal analysis basis in the prior art. SUMMARY

[0008] In the present application, the applicant proposes a multi-air-chamber pillow air valve assembly, which integrates multiple air valves together as a component, saves more space, and provides very flexible air path connection; facilitates accurate pressure detection and control of different air chambers, and provides better user experience.

[0009] The technical problem solved by the present application is a multi-air bag pillow air valve assembly, comprising at least two air valves; the air valve comprises a QFA air valve and a QFB air valve; the air valve comprises a solenoid valve body, a solenoid shaft, and a valve head; the valve head comprises the P port and the A port; the energization or de-energization state of the solenoid valve body changes the position of the solenoid shaft, the position of the solenoid shaft changes, and the internal communication relationship of the valve head changes; the P port comprises two branches, the branches are P1 branch and P2 branch, the P1 branch is in airway conduction with the P2 branch; the A port of the QFA air valve is used for connecting an external air source; the P1 port of the QFA air valve is used for connecting an external air bag; the P1 port of the QFB air valve is used for connecting an external air bag.

[0010] The valve head can further comprise a B port; the B port of the QFA air valve is connected with the A port of the QFB air valve; state 1: the solenoid shaft moves to the first position, and the P port of the valve head is in communication with the A port or the B port; state 2: the solenoid shaft moves to the second position, and the P port of the valve head is not in communication with the A port or the B port.

[0011] The valve head can comprise a QS1 gas chamber and a QS2 gas chamber; the QS1 gas chamber is connected with the QS2 gas chamber, the A port or the B port of the valve head is in communication with the QS1 gas chamber, and the P port of the valve head is in communication with the QS2 gas chamber; state 1: the solenoid shaft moves to the first position, and the QS1 gas chamber and the QS2 gas chamber are blocked; state 2: the solenoid shaft moves to the second position, and the QS1 gas chamber and the QS2 gas chamber are in communication.

[0012] The QFA air valve or the QFB air valve can be a two-position three-way air valve; state 1: the solenoid shaft moves to the first position, and the P port of the valve head is in communication with the A port; the P port of the valve head is not in communication with the A port or the B port; state 2: the solenoid shaft moves to the second position, and the P port of the valve head is not in communication with the A port or the B port; the A port or the B port of the valve head is in communication.

[0013] The solenoid shaft can comprise an A channel and a B channel; state 1: the solenoid shaft moves to the first position, and the A channel is in communication with the P port and the A port; state 2: the solenoid shaft moves to the second position, and the B channel is in communication with the B port and the A port, and the P port and the A port or the B port are not in communication.

[0014] The inner diameter of the A port of the air valve can be equal to the outer diameter of the B port of the air valve; the B port of the QFA air valve is connected with the A port of the QFB air valve in a sleeve connection.

[0015] At least one port of the P port, the A port, and the B port of the air valve can be provided with a one-way valve.

[0016] The QFA gas valve and the QFB gas valve can be connected in series to form a whole, and the A port of the gas valve and the B port of the gas valve are connected in a head-to-tail manner; or the QFA gas valve and the QFB gas valve can be connected in parallel to form a whole, and the A port of the gas valve points to the same direction.

[0017] The technical problem can also be solved by a multi-air-bag pillow assembly with pressure detection, which is used for an inflatable pillow and comprises at least two air bags, at least two air pressure sensors, and the gas valve assembly.

[0018] The technical problem can also be solved by a multi-air-bag pillow assembly with pressure detection, which is used for an inflatable pillow and comprises at least two air bags, at least two air pressure sensors, and the gas valve assembly.

[0019] The technical problem can also be solved by a dual-purpose air pillow, which can be used for snoring prevention and height adjustment. The dual-purpose air pillow comprises a gas pump, a plurality of gas valves, and a plurality of independent air bags. One gas valve and one end of one air bag are connected, and the gas valve is used for controlling the inflation or deflation of the air bag. The gas valve is a two-state two-way valve, i.e., a BF type electromagnetic valve. One end of each BF type electromagnetic valve is in communication with one air bag. The other end of each BF type electromagnetic valve is in communication with the atmosphere. When the BF type electromagnetic valve is in a first state, the gas pump and the air bags are in communication through the BF type electromagnetic valve. When the gas pump is working, the air bags are inflated. When the BF type electromagnetic valve is in a second state, the air bags and the external atmosphere are in communication. The dual-purpose air pillow further comprises a plurality of AN one-way valves. One end of each AN one-way valve is in communication with the air bag, and the other end of each AN one-way valve is in communication with the gas outlet of the gas pump.

[0020] The dual-purpose air pillow can further comprise a plurality of BN one-way valves. One end of each BN one-way valve is connected to one end of the BF type electromagnetic valve, and the other end of each BN one-way valve is in communication with the external atmosphere.

[0021] The scheme for solving the above technical problem of the application can also be a dual-purpose air pillow which can be used for snoring prevention and height adjustment. The dual-purpose air pillow comprises an air pump, a plurality of air valves, and a plurality of independent air bags. One air valve is connected to one end of one air bag, and the air valve is used to control the inflation or deflation of the air bag. The air valve comprises a plurality of two-state three-way valves, i.e., TF-type electromagnetic valves. One end of each TF-type electromagnetic valve is connected to one air bag. The other end of each TF-type electromagnetic valve is connected to the air pump. The other end of each TF-type electromagnetic valve is connected to the external atmosphere through a two-state two-way valve, i.e., a BF-type electromagnetic valve M. When the TF-type electromagnetic valve is in a first state, the air pump and the air bags are connected through the TF-type electromagnetic valve. When the TF-type electromagnetic valve is in a second state, the air bags are connected to the external atmosphere through the TF-type electromagnetic valve. When the BF-type electromagnetic valve M is in a first state, the other end of each TF-type electromagnetic valve is connected to the external atmosphere through the BF-type electromagnetic valve M. When the BF-type electromagnetic valve M is in a second state, the other end of each TF-type electromagnetic valve is not connected to the external atmosphere. The dual-purpose air pillow further comprises a plurality of CN one-way valves. The air inlet end of each CN one-way valve is connected to the air pump, and the other end of each CN one-way valve is connected to one end of the TF-type electromagnetic valve.

[0022] The dual-purpose air pillow can further comprise a plurality of DN one-way valves. The air inlet end of each DN one-way valve is connected to one end of the TF-type electromagnetic valve, and the other end of each DN one-way valve is connected to the external atmosphere.

[0023] The scheme for solving the above technical problem of the application can also be a control method for a dual-purpose air pillow. The control method is based on the dual-purpose air pillow described above, and the dual-purpose air pillow comprises a main control panel, control air valves, an air pump, and a plurality of independent air bags. The dual-purpose air pillow can be used for snoring prevention and height adjustment. The control method comprises two working modes. The first working mode is a height adjustment control mode. When the pillow is raised, the air pump and the air bags are connected, the air pump inflates the air bags, and the pillow height is raised. When the pillow is lowered, the main control panel controls the air valves to connect the air bags to the atmosphere, and the air bags are deflated. When the target pressure is reached, the air valves are closed to disconnect the air bags from the atmosphere, and the pillow height is maintained. The second working mode is a snoring prevention mode. According to external instructions, the specific air bags that need to be inflated or deflated are obtained. For the CQ air bags that need to be inflated, the air pump is started to inflate the CQ air bags. For the FQ air bags that need to be deflated, the corresponding air valves are opened to connect the FQ air bags to the atmosphere, the FQ air bags are deflated, and when the target pressure is reached, the air valves are closed to disconnect the FQ air bags from the atmosphere, and the pressure of the FQ air bags is maintained.

[0024] In the dual-purpose air pillow, one air valve and one air bladder are connected at one end. The air valve controls the inflation or deflation of the air bladder. The air valve can be a two-state, two-way valve, i.e., a BF-type solenoid valve. One end of each BF-type solenoid valve is connected to one air bladder; the other end of each BF-type solenoid valve is connected to an air pump. When the BF-type solenoid valve is in the first state, the air pump and each air bladder are connected through the respective BF-type solenoid valve; when the air pump is working, it inflates the air bladder. When the BF-type solenoid valve is in the second state, each air bladder is connected to the outside atmosphere. Alternatively, the dual-purpose air pillow may also include multiple AN one-way valves; the outlet end of each AN one-way valve is connected to the air bladder, and the inlet end of each AN one-way valve is connected to the outlet of the air pump. Alternatively, the dual-purpose air pillow may also include multiple BN one-way valves; the inlet end of each BN one-way valve is connected to one end of a BF-type solenoid valve, and the outlet end of each BN one-way valve is connected to the outside atmosphere.

[0025] In the dual-purpose air pillow, one end of an air valve and one end of an air bladder are connected. The air valve is used to control the inflation or deflation of the air bladder. The air valve may include multiple two-state three-way valves, i.e., TF-type solenoid valves. One end of each TF-type solenoid valve is connected to an air bladder. The other end of each TF-type solenoid valve is connected to the external atmosphere through a two-state two-way valve, i.e., BF-type solenoid valve M. When the TF-type solenoid valve is in the first state, the air pump and each air bladder are connected through the respective TF-type solenoid valves. When the air pump is working, it inflates the air bladder. When the TF-type solenoid valve is in the second state, each air bladder is connected to the external atmosphere through the TF-type solenoid valve. When BF-type solenoid valve M is in the first state, the other end of each TF-type solenoid valve is connected to the external atmosphere through BF-type solenoid valve M. When BF-type solenoid valve M is in the second state, the other end of each TF-type solenoid valve is not connected to the external atmosphere. It can also include multiple CN check valves; one inlet end of each CN check valve is connected to an air pump, and the other end of each CN check valve is connected to one end of a TF type solenoid valve. Alternatively, it can also include multiple DN check valves; one inlet end of each DN check valve is connected to one end of a TF type solenoid valve, and the other end of each DN check valve is connected to the external atmosphere.

[0026] The solution of the application to solve the above technical problems can also be a control method of the air pillow, the air pillow comprising a main control module, a plurality of independent air bags, a plurality of pressure sensors, and an ADC converter; a pressure sensing end of one pressure sensor is in communication with one air bag, and the pressure sensor is configured to obtain the pressure of the independent air bag; the ADC converter is in electrical signal connection with the pressure sensor; the main control module is in electrical signal connection with the ADC converter; the main control module obtains the pressure data of the pressure sensor, i.e., the pressure data in the corresponding air bag, through the ADC converter; the main control module analyzes and obtains the key air bag currently supporting the head according to all the obtained air bag pressure data; and the main control module controls the ADC converter to improve the sampling frequency and sampling accuracy for the pressure sensor in communication with the key air bag.

[0027] The solution of the application to solve the above technical problems can also be a control method of the air pillow, the air pillow comprising a main control module, a plurality of independent air bags, a plurality of pressure sensors, and an ADC converter; a pressure sensing end of one pressure sensor is in communication with one air bag, and the pressure sensor is configured to obtain the pressure of the independent air bag; the ADC converter is in electrical signal connection with the pressure sensor; the main control module is in electrical signal connection with the ADC converter; the main control module obtains the pressure data of the pressure sensor, i.e., the pressure data in the corresponding air bag, through the ADC converter; the main control module analyzes and obtains the key air bag currently supporting the head according to all the obtained air bag pressure data; and the main control module controls the ADC converter to improve the sampling frequency and sampling accuracy for the pressure sensor in communication with the key air bag.

[0028] The solution of the application to solve the above technical problems can also be a control method of the air pillow, the air pillow comprising a main control module, a plurality of independent air bags, a plurality of pressure sensors, and an ADC converter; a pressure sensing end of one pressure sensor is in communication with one air bag, and the pressure sensor is configured to obtain the pressure of the independent air bag; the ADC converter is in electrical signal connection with the pressure sensor; the main control module is in electrical signal connection with the ADC converter; the main control module obtains the pressure data of the pressure sensor, i.e., the pressure data in the corresponding air bag, through the ADC converter; the main control module analyzes and obtains the key air bag currently supporting the head according to all the obtained air bag pressure data; and the main control module controls the ADC converter to improve the sampling frequency and sampling accuracy for the pressure sensor in communication with the key air bag. Idx head is the corresponding head air bag position, n is the total number of air bags, m is the number of pressure sensing points of the pressure detection belt, and Pi is the pressure value corresponding to the i th sensing point of the pressure detection belt; when Idx head is not n, Idx head and Idx head +1 are selected as the key air bag indexes corresponding to the head position.

[0029] The ADC converter comprises: a group A ADC converter and a group B ADC converter; a plurality of pressure sensor output signals are connected to the group A ADC converter through an amplifier and an A multiplexer; a plurality of pressure sensor output signals are connected to the group B ADC converter through the amplifier and a B multiplexer; a master control module controls the A multiplexer to control the corresponding pressure sensor to be connected to the group A ADC converter, thereby obtaining the pressure data of the corresponding pressure sensor, i.e. the pressure data in the corresponding air bag; the master control module analyzes all the air bag pressure data obtained to obtain the key air bag currently supporting the head; the master control module controls the B multiplexer to control the corresponding pressure sensor to be connected to the group B ADC converter, thereby obtaining the pressure data of the corresponding pressure sensor in the key air bag, i.e. the pressure data in the key air bag; the AD conversion precision of the group B ADC converter is higher than that of the group A ADC converter; the sampling frequency of the group B ADC converter is also higher than that of the group A ADC converter; there are a plurality of key air bags; the B multiplexer is switched in sequence, and each time the pressure sensor of one key air bag is connected to the group B ADC converter to sample the pressure data; based on the key air bag pressure data obtained by the group B ADC converter, weak vibration signal analysis, snoring correlation analysis, pulse wave signal extraction, and heart rate signal analysis are performed.

[0030] The air pump can also be used to collect the pressure data in the air bag during the inflation and deflation of the plurality of independent air bags; and the master control module analyzes all the air bag pressure data obtained during the inflation and deflation to obtain the key air bag currently supporting the head.

[0031] The technical effects of the above technical solutions include: the combination of a plurality of air valves saves space, optimizes the connection relationship of the air path, and facilitates the individual control of a plurality of air bags. The A port can be controlled to communicate with the P port, or the A port can be controlled not to communicate with the P port, thereby controlling the opening and closing of the air path.

[0032] The technical effects of the above technical solutions include: the P port includes two branches, which facilitates the connection of different air path components, such as pressure sensors, air bags, or external air sources. The two branches of the P port increase the scalability of the air path connection and facilitate the expansion of the air path connection when used in combination.

[0033] The technical effects of the above technical solutions include: the B port is provided to further expand the scalability of the air path connection and facilitate the interconnection design between the air valves.

[0034] The technical effects of the above technical solutions include: the electromagnetic shaft moves to control the communication state between the QS1 air chamber and the QS2 air chamber, thereby controlling the connection relationship between the A port and the B port, facilitating control, and simplifying the internal structure of the valve for easy manufacturing.

[0035] The technical effects of the above technical solutions include: the gas valve is a two-position three-way gas valve, the electromagnetic shaft moves to control the communication state between the P port and the A port or between the P port and the B port, further expanding the connection scalability of the gas valve, and being suitable for different application scenarios.

[0036] The technical effects of the above technical solutions include: the inner diameter of the A port of the gas valve is equal to the outer diameter of the B port of the gas valve, facilitating the socket connection.

[0037] The technical effects of the above technical solutions include: at least one of the P port, the A port and the B port of the gas valve is provided with a one-way valve, thereby facilitating the combination switch control of the gas circuit.

[0038] The technical effects of the above technical solutions include: the QFA gas valve and the QFB gas valve are connected in series as a whole, further saving space.

[0039] The technical effects of the above technical solutions include: the QFA gas valve and the QFB gas valve are connected in parallel as a whole, the A ports of the gas valves point to the same direction, facilitating the connection of gas circuits in different directions.

[0040] The technical effects of the above technical solutions include: the multi-air bag pillow assembly with pressure detection uses the above-mentioned gas valve assembly, which can reduce the space occupied by the gas valve and provide more space for the air bag.

[0041] The technical effects of the above technical solutions include: the multi-air bag pressure detection pillow uses the above-mentioned gas valve to individually and accurately control the pressure of multiple air bags.

[0042] The technical effects of the above technical solutions include: the two-position three-way gas valve is provided, so that the gas circuits of the inlet and outlet can be connected to the one-way valves for control, increasing the flexibility of the gas circuit.

[0043] The technical effects of the above technical solutions include: the series connection mode of the gas valve QFA and the gas valve QFB greatly reduces the number of gas circuit components, and the gas circuit connection is more simple and efficient.

[0044] The technical effects of the above technical solutions include: the multi-air bag pillow gas valve assembly, the multiple two-position three-way gas valves combined together can save space and leave as much space as possible in the pillow for the effective air bag part.

[0045] The technical effects of the above technical solutions include: the B port of the gas valve QFA is socketed with the A port of the gas valve QFB, facilitating the expansion and assembly.

[0046] The technical effects of the above technical solutions include: the gas valve structure design facilitates the combination of multiple gas valves.

[0047] The technical effects of the above technical solutions include: the arrangement of the air path and the air valve in the dual-purpose air pillow makes it possible to control the single air bag alone; and the air path connection basis is provided for the application of two modes.

[0048] The technical effects of the above technical solutions include: the arrangement of the two-state two-way valve, i.e. the BF type electromagnetic valve, makes the air path connection simple and easier to maintain.

[0049] The technical effects of the above technical solutions include: the arrangement of the AN one-way valve enhances the independence between each air bag and the air pump, and reduces the influence of the air pump on each air bag.

[0050] The technical effects of the above technical solutions include: the arrangement of the BN one-way valve improves the stability of the airflow direction when discharging to the atmosphere, making the air bag discharge more smoothly and not disturbed.

[0051] The technical effects of the above technical solutions include: the air path design formed by the cooperation of multiple two-state three-way valves, i.e. TF type electromagnetic valves, and one two-state two-way valve, i.e. BF type electromagnetic valve M, provides another air path connection basis for the application of two modes.

[0052] The technical effects of the above technical solutions include: the arrangement of the CN one-way valve enhances the independence between each air bag and the air pump, and reduces the influence of the air pump on each air bag.

[0053] The technical effects of the above technical solutions include: the arrangement of the DN one-way valve improves the stability of the airflow direction when discharging to the atmosphere, making the air bag discharge more smoothly and not disturbed.

[0054] The technical effects of the above technical solutions include: based on the dual-purpose air pillow, it can be used for snoring prevention and height adjustment.

[0055] The technical effects of the above technical solutions include: based on the pressure detection and separate inflation and deflation control of multiple air bags, the snoring prevention function is realized, i.e. the independent pressure control of different air bags is realized, so as to adjust the height difference between different air bags to achieve the effect of snoring prevention.

[0056] The technical effects of the above technical solutions include: such design method makes height adjustment possible, and no matter in the height maintenance state or the snoring prevention state, the working period of the air valve is relatively short, which is an efficient energy-saving mode.

[0057] The technical effects of the above technical solutions include: based on the same set of hardware, two modes can be realized through software algorithm collaborative control, which is an efficient systematic solution.

[0058] The technical effects of the above technical solutions include: through the A group ADC converter and the B group ADC converter, the signals of the pressure sensor are distinguished and sampled, and more accurate original data is provided for deeper detail pressure control and inflation and deflation control.

[0059] The technical effects of the above technical solutions include: the master control module obtains all air bag pressure data obtained by the A group ADC converter, and obtains a key air bag currently supporting the head; the pressure of the key air bag is sampled with higher quality data, and more accurate and effective original pressure data is provided for subsequent accurate control.

[0060] The technical effects of the above technical solutions include: the pressure sensing array provides more data support for identification of the key air bag, so that the identification of the key air bag is more accurate. The pressure sensing array or the pressure sensor connected with the air bag, the single source pressure sensor data can also be used as the basis for identification of the key air bag, and the two cooperate to provide multiple original pressure data sources. The data can be verified with each other, and the identification accuracy and reliability of the key air bag are improved.

[0061] The technical effects of the above technical solutions include: multiple key air bags can be sampled with high-quality data, and more comprehensive data is provided for subsequent accurate control.

[0062] The technical effects of the above technical solutions include: when the pressure sensing array is used for key air bag identification alone, the key air bag position index can be obtained by formula calculation, and the algorithm is simple and reliable.

[0063] The technical effects of the above technical solutions include: during the inflation and deflation process of the air pump to the multiple independent air bags, the pressure data in the air bags is collected as the basis for data analysis, the data details are more abundant, and the identification accuracy of the key air bag is improved. BRIEF DESCRIPTION OF DRAWINGS

[0064] Figure 1 is a connection diagram of a multi-air bag pillow air valve assembly embodiment 1;

[0065] Figure 2 is Figure 1 a single air valve in a disassembled state diagram;

[0066] Figure 3 is a connection diagram of a multi-air bag pillow air valve assembly embodiment 2;

[0067] Figure 4 is Figure 3 a single air valve diagram;

[0068] Figure 5 is a disassembled diagram of a multi-air bag pillow air valve assembly embodiment 3 Figure 1 ;

[0069] Figure 6 This is an exploded view of Embodiment 4 of the multi-airbag pillow air valve assembly. Figure 2 ;

[0070] Figure 7 yes Figure 6 A schematic diagram of a single-valve air valve;

[0071] Figure 8 yes Figure 4 A schematic diagram showing the disassembled state of the single-valve;

[0072] Figure 9 A cross-sectional view of one embodiment of a single-valve valve. Figure 1 ;

[0073] Figure 10 A cross-sectional view of one embodiment of a single-valve valve. Figure 2 ;

[0074] Figure 11 This is a cross-sectional view of the second embodiment of the single-valve. Figure 1 ;

[0075] Figure 12 This is a cross-sectional view of the second embodiment of the single-valve. Figure 2 ;

[0076] Figure 13 This is a cross-sectional schematic diagram of the air valve assembly of a multi-airbag pillow;

[0077] Figure 14 This is a connection diagram of the multi-airbag pillow air valve assembly. Figure 3 ;

[0078] Figure 15 yes Figure 14 A schematic diagram of the decomposition state;

[0079] Figure 16 This is a connection diagram of a multi-airbag pillow assembly with pressure detection. Figure 1 ;

[0080] Figure 17 This is a connection diagram of a multi-airbag pillow assembly with pressure detection. Figure 2 ;

[0081] Figure 18 This is a connection diagram of a multi-airbag pillow assembly with pressure detection. Figure 3 ;

[0082] Figure 19 This is a connection diagram for the multi-airbag pressure monitoring pillow. Figure 1 ;

[0083] Figure 20 This is a connection diagram of a multi-airbag pillow assembly with pressure detection. Figure 4 ;

[0084] Figure 21 Connection diagram of multi-airbag pillow assembly with pressure detection Figure 5 ;

[0085] Figure 22 Connection diagram of multi-airbag pillow with pressure detection Figure 2 ;

[0086] Figure 23 Connection diagram of multi-airbag pillow assembly with pressure detection Figure 6 ;

[0087] Figure 24 Schematic diagram of multi-airbag pillow in prior art

[0088] Figure 25 Schematic diagram of component symbols in dual-purpose air pillow

[0089] Figure 26 Connection diagram of dual-purpose air pillow embodiment 1

[0090] Figure 27 Connection diagram of dual-purpose air pillow embodiment 2

[0091] Figure 28 Connection diagram of dual-purpose air pillow embodiment 3

[0092] Figure 29 Connection diagram of dual-purpose air pillow embodiment 4

[0093] Figure 30 Connection diagram of dual-purpose air pillow embodiment 5

[0094] Figure 31 Connection diagram of dual-purpose air pillow embodiment 6

[0095] Figure 32 Schematic block diagram of main control board in air pillow

[0096] Figure 33 Schematic diagram of air pillow control method flow

[0097] Figure 34 Schematic diagram of airbag distribution in air pillow

[0098] Figure 35 Schematic diagram of airbag and pressure detection belt distribution in air pillow; black blocks in the diagram are pressure detection units on the pressure detection belt

[0099] Figure 36 Schematic diagram of pressure distribution of pressure detection belt in air pillow in flat lying state

[0100] Figure 37is a pressure distribution diagram of a gas pillow in a side-lying state. DETAILED DESCRIPTION

[0101] The application will be described in further detail below with reference to the drawings. It should be noted that the following description of the preferred embodiments of the application is merely illustrative and does not in any way limit the application. The description of the preferred embodiments of the application is merely illustrative of the general principles of the application.

[0102] The first, second, letters, and combinations of letters and numbers in the present application are only for the convenience of expression and do not necessarily represent the order of size and time sequence. All letters or serial numbers are only for the convenience of expression and are used to refer to the substantive matters associated in the context, and are not limited by the literal meaning of the words themselves.

[0103] As shown in Figure 1 , Figure 3 , Figure 5 , Figure 6 , a multi-air chamber pillow gas valve assembly is shown, comprising at least two gas valves; the gas valve comprises a QFA gas valve, a QFB gas valve, a QFC gas valve, and a QFD gas valve. The number of specific gas valves can be set in combination according to the number of air chambers that need to be controlled individually, or the number of corresponding gas paths. Two gas valves are connected closely adjacent to each other, saving space.

[0104] As shown in Figure 2 , Figure 4 , Figure 7 , Figure 8 , the gas valve comprises a solenoid valve body, a solenoid shaft, and a valve head; the valve head comprises the P port and the A port; the solenoid valve body changes the position of the solenoid shaft when energized or de-energized, and the position of the solenoid shaft changes, changing the internal communication relationship of the valve head.

[0105] As shown in Figure 1 , Figures 3 to 6 , the P port comprises two branches, the branches being a P1 branch and a P2 branch, the P1 branch and the P2 branch being in gas path communication; the A port of the QFA gas valve is used to connect an external gas source; the P1 port of the QFA gas valve is used to connect an external air chamber; the P1 port of the QFB gas valve is used to connect an external air chamber.

[0106] As shown in Figures 3 to 8 , the valve head further comprises a B port; the B port of the QFA gas valve is connected to the A port of the QFB gas valve; state 1: the solenoid shaft moves to the first position, and the P port of the valve head is in communication with the A port or the B port; state 2: the solenoid shaft moves to the second position, and the P port of the valve head is not in communication with the A port or the B port.

[0107] In some embodiments, the A port and the B port of the QFA gas valve are in communication with the P port alternatively.

[0108] In some embodiments, the A port and the B port of the QFA gas valve can be in communication with the P port simultaneously.

[0109] As shown in Figures 11 to 13 , the valve head comprises a QS1 gas chamber and a QS2 gas chamber; the QS1 gas chamber is connected with the QS2 gas chamber, the A port or the B port of the valve head is in communication with the QS1 gas chamber, and the P port of the valve head is in communication with the QS2 gas chamber. Figure 11 State 1: the electromagnetic shaft moves to the first position, and the QS1 gas chamber is blocked from the connection passage of the QS2 gas chamber. Figure 12 State 2: the electromagnetic shaft moves to the second position, and the QS1 gas chamber is in communication with the QS2 gas chamber.

[0110] As shown in Figures 8 to 10 , the QFA gas valve or the QFB gas valve is a two-position three-way gas valve. Figure 9 State 1: the electromagnetic shaft moves to the first position, and the P port of the valve head is in communication with the A port; the P port of the valve head is not in communication with the A port or the B port. Figure 10 State 2: the electromagnetic shaft moves to the second position, and the P port of the valve head is not in communication with the A port or the B port; the A port or the B port of the valve head is in communication.

[0111] As shown in Figure 8 , the electromagnetic shaft comprises an A channel and a B channel. Figure 9 State 1: the electromagnetic shaft moves to the first position, and the A channel connects the P port and the A port. Figure 10 State 2: the electromagnetic shaft moves to the second position, and the B channel connects the B port and the A port, and the P port is not in communication with the A port or the B port.

[0112] As shown in Figure 3 and Figure 5 , the inner diameter of the A port of the gas valve is equal to the outer diameter of the B port of the gas valve; the B port of the QFA gas valve is connected with the A port of the QFB gas valve in a sleeve connection.

[0113] In some embodiments not shown in some drawings, at least one port of the P port, the A port and the B port of the gas valve is provided with a one-way valve.

[0114] As shown in Figure 3 and Figure 5 , the QFA gas valve and the QFB gas valve are connected in series and integrated, and the A port of the gas valve is in communication with the B port of the gas valve in a head-to-tail connection.

[0115] As shown in Figure 13 , Figure 14 and Figure 15 , the QFA gas valve, the QFB gas valve, the QFC gas valve and the QFD gas valve are connected in series and integrated, and the A port of the gas valve is in communication with the B port of the gas valve in a head-to-tail connection.

[0116] As Figure 1 and Figure 6 , or the QFA gas valve is integrated with the QFB gas valve in parallel, and the A ports of the gas valves point in the same direction.

[0117] As Figures 16 to 18 , as Figures 20 to 21 A multi-air bag pillow assembly with pressure detection for an inflatable pillow, comprising at least two air bags, at least two air pressure sensors, and a gas valve assembly comprising the above; the air bags comprise air bag QA and air bag QB; the air pressure sensors comprise air pressure sensor CGQA and air pressure sensor CGQB; the air pressure sensors comprise an inlet and outlet port; the inlet and outlet port of sensor CGQA is connected to the P2 port of QFA gas valve through a pipe; the inlet and outlet port of sensor CGQB is connected to the P2 port of QFB gas valve through a pipe; the P1 port of QFA gas valve is connected to air bag QA; the P1 port of QFB gas valve is connected to air bag QB.

[0118] As Figure 19 and Figure 22 A multi-air bag pillow with pressure detection, comprising the above multi-air bag pillow assembly with pressure detection.

[0119] As Figure 16 A multi-air bag pillow assembly with pressure detection, the air bags comprise air bag QA and air bag QB; the air pressure sensors comprise air pressure sensor CGQA and air pressure sensor CGQB; the connecting pipes comprise air pressure detection connecting pipe DGA and air pressure detection connecting pipe DGB; air bag QA is connected to air pressure sensor CGQA through air pressure detection connecting pipe DGA; air bag QB is connected to air pressure sensor CGQB through air pressure detection connecting pipe DGB. It also includes a circuit board BT, and at least two air pressure sensors are installed on the circuit board BT.

[0120] As Figure 16 A multi-air bag pillow assembly with pressure detection, the air bags further comprise air bag QC and air bag QD; the air pressure sensors comprise air pressure sensor CGQC and air pressure sensor CGQD; the connecting pipes comprise air pressure detection connecting pipe DGC and air pressure detection connecting pipe DGD; air bag QC is connected to air pressure sensor CGQC through air pressure detection connecting pipe DGC; air bag QD is connected to air pressure sensor CGQD through air pressure detection connecting pipe DGD. It also includes a circuit board BT, and four air pressure sensors, namely air pressure sensor CGQA, air pressure sensor CGQB, air pressure sensor CGQC, and air pressure sensor CGQD, are installed on the circuit board BT.

[0121] As Figure 16, the embodiment of the multi-gasbag pillow assembly with pressure detection, the gasbag includes at least one gas nozzle;Two or more three-way connectors;Gasbag QA includes gas nozzle A1;Three-way connector includes three-way STA, three-way STB;Gas nozzle A1 is communicated with gas valve QFA through three-way STA;Gas nozzle A1 is communicated with air pressure sensor CGQA through three-way STA;Gasbag QB includes gas nozzle B1;Gas nozzle B1 is communicated with gas valve QFB through three-way STB;Gas nozzle B1 is communicated with air pressure sensor CGQB through three-way STB.

[0122] As Figure 16 , the embodiment of the multi-gasbag pillow assembly with pressure detection, gasbag QC includes gas nozzle C1;Three-way connector includes three-way STC, three-way STD;Gas nozzle C1 is communicated with gas valve QFC through three-way STC;Gas nozzle C1 is communicated with air pressure sensor CGQC through three-way STC;Gasbag QD includes gas nozzle D1;Gas nozzle D1 is communicated with gas valve QFD through three-way STD;Gas nozzle D1 is communicated with air pressure sensor CGQD through three-way STD.

[0123] As Figure 16 , the embodiment of the multi-gasbag pillow assembly with pressure detection, further comprising, gas valve QFW, one end of gas valve QFW is communicated with air pump PB and charge and discharge pipe CFQW;The other end of gas valve QFW is communicated with atmosphere.

[0124] As Figure 16 , the valve assembly includes gas valve QFA, gas valve QFB, gas valve QFC, gas valve QFD;Gas valve QFA is used for controlling the communication state of two end connecting pipeline.

[0125] As Figure 17 And Figure 18 , the embodiment of the multi-gasbag pillow assembly with pressure detection, the gasbag includes at least one gas nozzle;Two or more three-way connectors;Gasbag QA includes gas nozzle A1;Gasbag QB includes gas nozzle B1;Three-way connector includes three-way STA1, three-way STA2, three-way STB1, three-way STB2;Gas nozzle A1 is communicated with one end of gas valve QFA through three-way STA1;Each port of three-way STA1 is respectively communicated with gas nozzle A1, one end of gas valve QFA, one end of three-way STA2;The other end of gas valve QFA is communicated with atmosphere;Each port of three-way STA2 is respectively communicated with the outlet of one-way valve DXA, one end of three-way STA2, air pressure sensor CGQA;Each port of three-way STB1 is respectively communicated with gas nozzle B1, one end of gas valve QFB, one end of three-way STB2;The other end of gas valve QFB is communicated with atmosphere;Each port of three-way STB2 is respectively communicated with the outlet of one-way valve DXB, one end of three-way STB2, air pressure sensor CGQB.

[0126] As Figure 17 And Figure 18, in the embodiment of the multi-gas-bag pillow assembly with pressure detection, the gas bag QC comprises a gas nozzle C1; the gas bag QD comprises a gas nozzle D1; the three-way connector comprises a three-way STC1, a three-way STC2, a three-way STD1, and a three-way STD2; the gas nozzle C1 is communicated with one end of the gas valve QFC through the three-way STC1; each port of the three-way STC1 is respectively communicated with the gas nozzle C1, one end of the gas valve QFC, one end of the three-way STC2, and the gas pressure sensor CGQC; the other end of the gas valve QFC is communicated with the atmosphere; each port of the three-way STC2 is respectively communicated with the outlet of the one-way valve DXC, one end of the three-way STC2, and the gas pressure sensor CGQC; each port of the three-way STD1 is respectively communicated with the gas nozzle D1, one end of the gas valve QFD, and one end of the three-way STD2; the other end of the gas valve QFD is communicated with the atmosphere; each port of the three-way STD2 is respectively communicated with the outlet of the one-way valve DXD, one end of the three-way STD2, and the gas pressure sensor CGQD.

[0127] As Figure 17 , the gas valve assembly comprises a gas valve QFA, a gas valve QFB, a gas valve QFC, and a gas valve QFD; each port of the gas valve QFA to the gas valve QFD is communicated with the atmosphere, and the gas valve QFA to the gas valve QFD is used for controlling the communication state with the atmosphere.

[0128] As Figure 18 , in the embodiment of the multi-gas-bag pillow assembly with pressure detection, the gas valve QFW is further communicated with one end of the gas valve QFA and one end of the gas valve QFB; the other end of the gas valve QFW is communicated with the atmosphere. The gas valve QFB is communicated with the atmosphere through the gas valve QFW; the gas valve QFA is communicated with the atmosphere through the gas valve QFW.

[0129] As Figure 23 , the gas pressure sensor CGA, the gas pressure sensor CGB, the gas pressure sensor CGC, and the gas pressure sensor CGD; as Figure 23 , the gas bag comprises at least one gas nozzle; two or more multi-way connectors; the gas bag QA comprises a gas nozzle A1; the gas bag QB comprises a gas nozzle B1; the multi-way connector comprises a multi-way DTA1 and a multi-way DTB1; each port of the multi-way DTA1 is respectively communicated with the gas nozzle A1, one end of the gas valve QFA, the outlet of the one-way valve DXA, and the gas pressure sensor CGA; the other end of the gas valve QFA is communicated with the atmosphere; each port of the multi-way DTB1 is respectively communicated with the gas nozzle B1, one end of the gas valve QFB, the outlet of the one-way valve DXB, and the gas pressure sensor CGB; the other end of the gas valve QFB is communicated with the atmosphere.

[0130] As Figure 23, the air bag QC includes the air nozzle C1; the air bag QD includes the air nozzle D1; the multi-way connector includes the multi-way DTC1 and the multi-way DTD1; each one port of the multi-way DTC1 is communicated with the air nozzle C1, one end of the air valve QFC, the outlet of the one-way valve DXC, the air pressure sensor CGC respectively; the other end of the air valve QFC is communicated with the atmosphere; each one port of the multi-way DTD1 is communicated with the air nozzle D1, one end of the air valve QFD, the outlet of the one-way valve DXD, the air pressure sensor CGD respectively; the other end of the air valve QFD is communicated with the atmosphere.

[0131] As Figure 19 A multi-air bag pressure detection pillow, comprising the multi-air bag pillow assembly with pressure detection of any one of the above. Including two groups of air bags; the two groups of air bags are arranged in two rows; the first group of air bags includes 2 air bags; air bag N1, air bag N2; the second group of air bags includes 4 or more air bags, air bag M1, air bag M2, air bag M3, air bag M4, air bag M5. In some embodiments, the positions of air bag N1 and air bag N2 can be exchanged with the positions of air bag M1, air bag M2, air bag M3, air bag M4 and air bag M5.

[0132] As Figure 19 A multi-air bag pressure detection pillow, comprising a control partition 200, the control partition 200 does not overlap with the air bags in the pillow orthographic projection; the control partition 200 is in the direction away from the head of the user; the air pump PB, the air valve QFA, the air valve QFB and the air valve QFW are arranged in the control partition. The air valve can be air valve QF1, air valve QF2, air valve QF3, air valve QF4, air valve QF5, air valve QF6 and air valve QF7. The air pressure sensor can be air pressure sensor CG1, air pressure sensor CG2, air pressure sensor CG3, air pressure sensor CG4, air pressure sensor CG5, air pressure sensor CG6 and air pressure sensor CG7. Each air bag is independently provided with a corresponding air pressure sensor and air valve for separate inflation and deflation control.

[0133] As Figure 20 A multi-air bag pillow assembly with pressure detection, comprising at least two air bags, at least two two-position three-way air valves, an air pump PB, an exhaust valve PQF, and two or more one-way valves; the one-way valve includes an air inlet and an air outlet; the one-way valve prohibits gas from entering the air inlet from the air outlet.

[0134] As Figure 20, the single-way valve includes single-way valve DXA1, single-way valve DXA2, single-way valve DXB1, single-way valve DXB2; the air bag includes air bag QA, air bag QB; the two-position three-way valve includes air valve QFA, air valve QFB; the two-position three-way valve includes P end, A end, R end; the two-position three-way valve first state, P end and A end air communication; the two-position three-way valve second state, R end and A end air communication; air valve QFA and air bag QA correspond, air valve QFA's A end and air bag QA communication; air valve QFB and air bag QB correspond, air valve QFB's A end and air bag QB communication; air valve QFA's P end and single-way valve DXA1's exhaust port communication; air valve QFB's P end and single-way valve DXB1's exhaust port communication; single-way valve DXA1's air inlet and single-way valve DXB1's air inlet communication; single-way valve DXA1's air inlet and air pump PB communication; single-way valve DXB1's air inlet and air pump PB communication; air valve QFA's R end and single-way valve DXA2's air inlet communication; air valve QFB's R end and single-way valve DXB2's air inlet communication; single-way valve DXA2's exhaust port and single-way valve DXB2's exhaust port communication; single-way valve DXA2's exhaust port and exhaust valve PQF one end communication; single-way valve DXB2's exhaust port and exhaust valve PQF one end communication; exhaust valve PQF's other end and atmosphere communication.

[0135] As Figure 20 , the two-position three-way valve first state can be power-on state also can be power-off state. The two-position three-way valve second state also can be with the first state corresponding power-off state or power-on state. As long as two kinds of state cooperation can.

[0136] As Figure 20, the one-way valve includes one-way valve DXC1, one-way valve DXC2, one-way valve DXD1, one-way valve DXD2; the air bag includes air bag QC, air bag QD; the two-position three-way valve includes air valve QFC, air valve QFD; the two-position three-way valve includes P end, A end, R end; the two-position three-way valve first state, P end and A end air communication; the two-position three-way valve second state, R end and A end air communication; air valve QFC corresponds to air bag QC, A end of air valve QFC and air bag QC communication; air valve QFD corresponds to air bag QD, A end of air valve QFD and air bag QD communication; P end of air valve QFC and exhaust port of one-way valve DXC1 communication; P end of air valve QFD and exhaust port of one-way valve DXD1 communication; air inlet of one-way valve DXC1 and air inlet of one-way valve DXD1 communication; air inlet of one-way valve DXC1 and air pump PD communication; air inlet of one-way valve DXD1 and air pump PD communication; R end of air valve QFC and air inlet of one-way valve DXC2 communication; R end of air valve QFD and air inlet of one-way valve DXD2 communication; exhaust port of one-way valve DXC2 and exhaust port of one-way valve DXD2 communication; exhaust port of one-way valve DXC2 and one end of exhaust valve PQF communication; exhaust port of one-way valve DXD2 and one end of exhaust valve PQF communication; the other end of exhaust valve PQF and atmosphere communication.

[0137] As Figure 20 And Figure 21 , the air valve assembly includes air valve QFA, air valve QFB, air valve QFC, air valve QFD; air valve QFA is used for controlling the communication state of the connecting pipeline between the three ports of the air valve. Figure 20 In the middle, the R end of the air valve is the B port of the air valve.

[0138] As Figure 21 , the multi-air bag pillow assembly with pressure detection includes at least two air bags, at least two two-position three-way valves, air pump PB, exhaust valve PQF.

[0139] As Figure 21 , the multi-air bag pillow assembly with pressure detection includes at least two air bags, at least two two-position three-way valves, air pump PB, exhaust valve PQF.

[0140] AsFigure 21 , the multi-air bag pillow assembly with pressure detection, the air bag includes air bag QC, air bag QD; two three-way valves include air valve QFC, air valve QFD; air valve QFC corresponds to air bag QC, the A end of air valve QFC communicates with air bag QC; air valve QFD corresponds to air bag QD, the A end of air valve QFD communicates with air bag QD; the P end of air valve QFC communicates with air bag QC; the P end of air valve QFD communicates with air bag QD; the R end of air valve QFC is connected with the A end of air valve QFD; the A end of air valve QFC communicates with air pump PB; exhaust valve PQF communicates with air pump PB.

[0141] The technical effects of the above technical solutions include: each air bag is provided with an independent air pressure sensor, which facilitates precise pressure control.

[0142] The technical effects of the above technical solutions include: the air bag and the air pressure sensor are connected through the air pressure detection communication pipe, and the air pressure sensor is installed on the circuit board BT; the air paths are connected independently, but the circuit connection is integrated for convenient control.

[0143] The technical effects of the above technical solutions include: the air pump and the air valve are connected through the inflation and deflation pipe; the air valve or the control connection port of the air valve can be arranged on the circuit board BT, the air paths are connected independently, but the circuit control connection is integrated, which is convenient for control.

[0144] The technical effects of the above technical solutions include: the two air nozzles of the air bag facilitate the connection of the pressure sensor and the control of the inflation and deflation valve.

[0145] The technical effects of the above technical solutions include: the three-way connector is arranged, so that one air nozzle can realize pressure detection and inflation and deflation control at the same time, and the difficulty of manufacturing the air bag is reduced.

[0146] The technical effects of the above technical solutions include: the two three-way connectors are arranged, a connection interface is added for the one-way valve, the one-way valve is arranged, the one-way flow of air flow can be controlled, the stability during inflation is increased, unnecessary oscillation caused by mutual penetration between air paths is reduced, and the user experience is better.

[0147] The technical effects of the above technical solutions include: two groups of air bags are arranged in two rows, and corresponding settings and inflation and deflation controls can be performed according to different positions.

[0148] The technical effects of the above technical solutions include: the control circuit module is integrated on the circuit board BT, and is electrically connected with the air pressure sensor, the air pump and the air valve, so that unified control is facilitated.

[0149] The technical effects of the above technical solutions include: the pillow provided with the multi-air bag pillow assembly with pressure detection can control the air pressure of a single air bag in a partition, can realize more accurate air bag cooperative control, and facilitates the realization of snoring stopping, height lifting or lowering and other operations.

[0150] The technical effects of the above technical solutions include: the control partition and the air bag do not overlap on the pillow orthographic projection, facilitating use and reducing the influence of component noise on users during the inflation and deflation process.

[0151] As Figure 22 , the multi-air bag pillow with pressure detection includes two groups of air bags; the two groups of air bags are arranged in two rows; the first group of air bags includes two air bags, air bag N1 and air bag N2; the second group of air bags includes four or more air bags, air bag M1, air bag M2, air bag M3, air bag M4, and air bag M5.

[0152] As Figure 22 , the multi-air bag pillow with pressure detection includes a control partition 200, the control partition 200 and the air bag do not overlap on the pillow orthographic projection; the control partition 200 is away from the head of the user; the air valve can be air valve QF1, air valve QF2, air valve QF3, air valve QF4, air valve QF5, air valve QF6, and air valve QF7. The air pressure sensor can be air pressure sensor CG1, air pressure sensor CG2, air pressure sensor CG3, air pressure sensor CG4, air pressure sensor CG5, air pressure sensor CG6, and air pressure sensor CG7. Each air bag is independently provided with a corresponding air pressure sensor and air valve for separate inflation and deflation control. The control partition includes a control circuit module; the control circuit module is in electrical signal connection with air pressure sensor CGQA and air pressure sensor CGQB; the control circuit module is in electrical signal connection with air pump PB, air valve QFA, air valve QFB, and air valve PQF.

[0153] The technical effects of the above technical solutions include: two one-way valves are arranged in a single air bag, the air flow control for air intake and air exhaust is more stable, and is less affected by the inflation and deflation of other parts in the related connection air path.

[0154] The technical effects of the above technical solutions include: the arrangement of the two-position three-way air valve allows the air intake and air exhaust paths to be connected to the one-way valves for control, increasing the flexibility of the air path.

[0155] The technical effects of the above technical solutions include: the series connection of air valve QFA and air valve QFB greatly reduces the number of air path components and makes the air path connection more simple and efficient.

[0156] The technical effects of the above technical solutions include: air pressure sensor CGQW is used to detect the air pressure of the air bag during inflation or deflation, can perform multi-point air pressure detection, and improves the accuracy of detection.

[0157] The technical effects of the above technical solutions include: each air bag is provided with an independent air pressure sensor, facilitating separate air bag pressure control.

[0158] The technical effects of the above technical solutions include that the air bag includes one air inlet and outlet, thereby reducing the difficulty of manufacturing the air bag.

[0159] The technical effects of the above technical solutions include that the air bag includes two air inlets and outlets, thereby facilitating various connections and control.

[0160] The technical effects of the above technical solutions include that the air pressure sensor is installed on the circuit board BT, thereby facilitating control.

[0161] The technical effects of the above technical solutions include that the multi-air bag pillow air valve assembly is composed of multiple two-position three-way air valves, thereby saving space and leaving as much space in the pillow as possible for the effective air bag part.

[0162] The technical effects of the above technical solutions include that the R end of the air valve QFA is sleeved with the A end of the air valve QFB, thereby facilitating expansion assembly.

[0163] The technical effects of the above technical solutions include that the air valve structure design facilitates the combination of multiple air valves.

[0164] The air valve in the Figures 25 to 31 includes a two-way or three-way electromagnetic valve. The "two-way" electromagnetic valve is not connected when the two air ports are not connected, and the two air ports are connected when the electromagnetic valve is powered on. The "three-way" electromagnetic valve has three air ports, and the air paths of two of the air ports are connected when the electromagnetic valve is not powered on. When the electromagnetic valve is powered on, one of the original connected air paths is closed, and the other air port is connected to form a connected air path.

[0165] The electromagnetic valve for the intelligent pillow has a current of about several hundred mA (100-400 mA, 200-300 mA is more common).

[0166] The two electromagnetic valves involved in the subsequent Figures 25 to 31 are shown in Figure 25 . In Figure 25 , the left small graph is a two-state two-way valve, which is recorded as a BF type electromagnetic valve. The A and B air nozzles are connected only when the electromagnetic valve is powered on, and are not connected when the electromagnetic valve is powered off.

[0167] Figure 25 In , the middle small graph is a two-state three-way valve, which is recorded as a TF type electromagnetic valve. The valve has three air nozzles. In the graph, the A and B air nozzles are connected when the electromagnetic valve is powered on. When the electromagnetic valve is not powered on, only the C and A air nozzles in the straight line direction are connected, and the air nozzles in the diagonal direction are not connected.

[0168] Figure 25In the middle, the right small picture is a check valve or a one-way valve, a device that limits the flow direction of the gas flow. For two different gas pressure areas, the middle is connected by a check valve. Only the high gas pressure area can flow to the low gas pressure area when the check valve allows the flow direction. If the direction is reversed, even if it is a high gas pressure area, the gas flow cannot flow to the low gas pressure area.

[0169] In this application, the air pump can be a DC single-way air pump, which can only inflate. The working current of the air pump changes with the resistance in the air path during inflation. The greater the air pressure resistance, the greater the current, and it will also produce greater working noise.

[0170] As Figure 26 An embodiment of a dual-purpose air pillow can be used to stop snoring and adjust the height. It includes a main control board, a pillow air path, and a pressure detection belt. The pressure sensing belt in the figure is the pressure detection belt. The pillow air path includes multiple independent air bags Q1, Q2, Q3, Q4...Qn. The pillow air path includes connecting components and pipelines between the air bags and the air pump; connecting components and pipelines between the air bags and the air valves.

[0171] As Figures 26 to 31 The pressure detection belt is arranged below the pillow air path to detect the pressure of the air bags on the pressure detection belt. The main control board includes a sound signal processing module, a pressure signal processing module, a gas pressure detection module, and a gas path component control module. The gas pressure detection module includes multiple pressure sensors. The gas pressure sensing end of one pressure sensor is in communication with one independent air bag. The design of multiple pressure sensors allows the pressure of a single air bag to be independently controlled, and the subsequent control of the inflation and deflation of a single air bag relies on the pressure output of the pressure sensor. The main control board controls the inflation and deflation of a single air bag based on the pressure obtained by the pressure sensor.

[0172] The gas path component control module includes an air pump and multiple air valves. One air valve is connected to one end of one air bag, and the air valve is used to control the inflation or deflation of the air bag. One end of each air valve is connected to one air bag. The other end of each air valve is connected to the air pump. When the air valve is in the first state, the air pump and the air bags are connected through the air valves, and the air pump inflates the air bags when it works. When the air valve is in the second state, the air bags and the air pump are not connected.

[0173] As Figure 26 and Figure 27 In an embodiment of a dual-purpose air pillow, the air valve is a two-state two-way valve, i.e. a BF type electromagnetic valve. One end of each BF type electromagnetic valve is connected to one air bag. The other end of each BF type electromagnetic valve is connected to the atmosphere. When the BF type electromagnetic valve is in the first state, the air pump and the air bags are connected. The air pump inflates the air bags. When the BF type electromagnetic valve is in the second state, the air pump and the air bags are not connected. The air bags are connected to the external atmosphere through the BF type electromagnetic valve.Figure 27 The one end of the plurality of BF solenoid valves is connected and communicates with the external atmosphere. The BF solenoid valve can be energized only in the second state, that is, the period when the air bag and the external atmosphere are communicated and deflated.

[0174] As Figure 26 and Figure 27 In an embodiment of the dual-purpose air pillow, a plurality of AN check valves are further included; the air outlet end of each AN check valve is communicated with the air bag, and the air inlet end of each AN check valve is communicated with the air outlet of the air pump. The AN check valve is arranged to reduce the mutual influence between the air bags, and while the plurality of air bags share the same air pump, the mutual influence between the air bags can be reduced.

[0175] As Figure 28 In an embodiment of the dual-purpose air pillow, a plurality of BN check valves are further included; the air inlet end of each BN check valve is connected with one end of the BF solenoid valve, and the air outlet end of each BN check valve is communicated with the external atmosphere.

[0176] As Figure 29 In an embodiment of the dual-purpose air pillow, the air valve includes a plurality of two-state three-way valves, that is, TF solenoid valves; one end of each TF solenoid valve is connected with one air bag; the other end of each TF solenoid valve is connected with the air pump; and the other end of each TF solenoid valve is connected with the external atmosphere through a two-state two-way valve, that is, a BF solenoid valve M.

[0177] When the TF solenoid valve is in the first state, the air pump and the air bags are communicated through the TF solenoid valve; and when the air pump works, the air bags are inflated.

[0178] When the TF solenoid valve is in the second state, the air bags are communicated with the external atmosphere through the TF solenoid valve.

[0179] When the BF solenoid valve M is in the first state, the other end of each TF solenoid valve is communicated with the external atmosphere through the BF solenoid valve M.

[0180] When the BF solenoid valve M is in the second state, the other end of each TF solenoid valve is not communicated with the external atmosphere.

[0181] As Figure 29 In an embodiment of the dual-purpose air pillow, when the TF solenoid valve is in the first state, the air pump and the air bags are communicated through the TF solenoid valve; and when the air pump works, the air bags are inflated; and when the TF solenoid valve is in the second state, the air pump is communicated with one end of a two-state two-way solenoid valve through the TF solenoid valve, and the other end of the two-state two-way solenoid valve is communicated with the external atmosphere. The two-state two-way solenoid valve is energized only in the air bag deflation stage and is communicated with the external atmosphere.

[0182] As Figure 30In an embodiment of the dual-purpose air pillow, a plurality of CN one-way valves are further included, one end of each CN one-way valve is connected with the air pump, and the other end of each CN one-way valve is in communication with one end of the TF electromagnetic valve. In the first state of the TF electromagnetic valve, the air pump is in communication with the air bag; in the second state of the TF electromagnetic valve, the air bag is in communication with the external atmosphere.

[0183] As Figure 31 In an embodiment of the dual-purpose air pillow, a plurality of DN one-way valves are further included, one end of each DN one-way valve is in communication with one end of the TF electromagnetic valve, and the other end of each DN one-way valve is in communication with the external atmosphere.

[0184] The air valve in the dual-purpose air pillow described above can be the multi-air bag pillow air valve assembly described above when a plurality of air valves are present, thereby saving space, having a higher degree of modularization, and facilitating production and maintenance.

[0185] In an embodiment of the control method of the dual-purpose air pillow, based on the dual-purpose air pillow described above, the dual-purpose air pillow can be used for snoring prevention and height adjustment; the control method includes two working modes.

[0186] The first working mode is the height adjustment control mode; when the pillow is raised, the air pump is in communication with each air bag, the air pump inflates each air bag to raise the height of the pillow; when the pillow is lowered, the main control board controls the air valve to allow each air bag to communicate with the atmosphere to deflate; when the target pressure is reached, the air valve is closed to allow each air bag to not communicate with the atmosphere, thereby maintaining the height of the pillow.

[0187] The second working mode is the snoring prevention mode; according to an external instruction, the specific air bags that need to be inflated and deflated are obtained; for the CQ air bag that needs to be inflated, the air pump is started to inflate the CQ air bag; for the FQ air bag that needs to be deflated, the corresponding air valve is opened to allow the FQ air bag to communicate with the atmosphere to deflate; when the target pressure is reached, the air valve is closed to allow the FQ air bag to not communicate with the atmosphere, thereby maintaining the pressure of the FQ air bag.

[0188] The main control board includes a sound signal processing module, a pressure signal processing module, an air pressure detection module, and an air path component control module.

[0189] The pressure signal processing module in the main control board is used to process the pressure detection information obtained by the pressure detection belt; the sound signal processing module in the main control board is used to obtain external sound information and determine whether the state is snoring. The air pressure detection module in the main control board is used to obtain the pressure state of each air bag, and each air bag is separately provided with a pressure sensor.

[0190] The main control board determines the current working mode of the pillow according to the acquired various information and external instructions. It can switch into the height lifting control mode or the snoring stopping mode according to the external instructions. It can also automatically enter the corresponding working mode according to the information obtained by real-time monitoring and the pre-set mode selection mechanism.

[0191] The overall scheme includes three large parts: the main control board, the pillow air path, and the pressure detection belt.

[0192] The main control board is responsible for the main control component of the implementation of the entire pillow function, and processes the collected sound, pressure, and air pressure information in the specific air path, such as Figure 32 Fig. 1 is a hardware principle diagram of the control board.

[0193] The pressure detection belt includes a pressure sensing array, a multi-way switching m-to-1 module, and sends the pressure distribution data acquired by the pressure sensing array to an analog-to-digital conversion module. The data is pre-processed by the processor and sent to the main control board through the external communication interface. The pressure sensing array is composed of multiple sensors that can sense pressure. The pressure detection belt includes a resistance type and a capacitance type pressure sensing belt. The pressure data that can be sensed can form a data array [k, m], k rows, m columns. More simply, the pressure detection belt can be placed under the user's shoulder on the north side, or it can be expanded to a larger sensing area and placed on the entire bed surface area. Here, [1, m] is taken as an example for introduction.

[0194] Regarding the buffering and noise reduction of the air path, when the airflow speed in a certain air path is fast, it may bring different degrees of airflow sound. In order to suppress or eliminate such noise, a buffer air chamber can be added to the air path that is prone to produce airflow sound, that is, the capacity of the air path is relatively increased, thereby reducing the airflow speed and suppressing the noise; in addition, porous or flocculent substances such as sponge, cotton, fabric, etc. can be added to the air path and air port to suppress the generation of noise.

[0195] Overall, the dual-purpose pillow has multiple air bags, that is, when needed, certain or several specific air bags are inflated or deflated to adjust the height of the pillow surface.

[0196] The following uses "blue lines" to represent the arrangement of the air pipe line, and "black lines" to represent the connection of electrical signals (control, drive, communication, etc. Electrical signals). Specifically, the air path control logic of the pillow realized by the two schemes is described.

[0197] As shown in Figure 26 and Figure 29, two different schemes, the main difference in charge and discharge control logic, the common point is that both schemes can be better energy consumption, to achieve high frequency (hundreds, thousands of Hz) real-time acquisition of air pump gas path and air bag pressure value. High frequency real-time acquisition of air pump gas path and air bag pressure value can more accurately reflect the real pillow state, can be timely fine control, better user experience.

[0198] For the energy consumption of the implementation scheme, define "unit energy consumption" as the power consumption of the corresponding power consumption component in the minimum unit time of power-on work, here the unit time energy consumption of the circuit board is W B , the energy consumption of the air pump is W Q , the unit time energy consumption of an electromagnetic valve is W BF and W TF correspond to BF type and TF type electromagnetic valves respectively. In actual use, the power consumption of the two types of electromagnetic valves can be equal, and here the distinction is mainly to make it clearer to see which type of electromagnetic valve is used when describing the power consumption of the scheme.

[0199] Compared with the air pump and the electromagnetic valve, the energy consumption of the control circuit board is the core function, and its energy consumption is necessary. Here, the energy consumption and the required working time of the air pump and the electromagnetic valve are described to describe the overall energy consumption. The power consumption of the electromagnetic valve used in this type of pillow is about 1-1.5 watts, and the current during power-on is about 300mA-400mA. Therefore, with the increase of the electromagnetic valve, the more electromagnetic valves that are powered on in unit time, the greater the overall power consumption of the pillow; different implementation schemes require different numbers of electromagnetic valves to be powered on, which can more intuitively reflect the power consumption advantage of the scheme.

[0200] In this application, one air bag corresponds to one electromagnetic valve for individual control, but the working state time of the electromagnetic valve is only the on-off time, such as Figures 26 to 28 Due to the setting of the one-way valve, there is no need for the electromagnetic valve to be in a high energy consumption state for a long time.

[0201] The dual-purpose pillow of the application has two functions: one is height adjustment, i.e. lifting control, and the other is snoring prevention.

[0202] One is lifting control or height control, i.e. adjusting the overall height of the pillow surface according to whether the user is lying flat or lying on one side; due to the structural characteristics of most human bodies, the pillow height is usually desired to be higher when lying on one side due to the shoulder, and the pillow height is desired to be lower when lying flat.

[0203] One is snoring prevention, i.e. adjusting one or more air bags on both sides near the position corresponding to the user's head to be inflated or deflated according to whether the user snores, to achieve the way of inhibiting snoring by making the user's head lean to the left or right.

[0204] If only the first function is considered, the simplest and lowest power consumption can be achieved by using one air bag to inflate and deflate. However, if both functions are to be realized simultaneously, a scheme based on multiple air bags is required, in which the air path and electromagnetic valves are reasonably matched.

[0205] In the present application, both functions are realized and reasonable power consumption balance is achieved.

[0206] As Figures 26 to 28 in the embodiments, the inflation and deflation logic realized by the scheme is that multiple air bags are inflated simultaneously, but deflated independently. Figures 26 to 28 In the embodiments, the air flow direction marked with 1 is the inflation air flow direction, and the direction marked with 2 is the air bag deflation air flow direction.

[0207] The energy consumption of the scheme in a specified time period can be represented by the following formula:

[0208]

[0209] where H t is the specified time period, h qj is the jth time slice of the air pump in the specified H t time period, because the air pump is powered on only when the air bag needs to be inflated, h bfi is the cumulative time of the ith electromagnetic valve in the specified time period H t , and n is the total number of air bags.

[0210] As Figures 26 to 28 shown in the embodiments, the air pump gas delivery pipeline to each air bag is connected through a check valve, i.e., a one-way valve. The pipeline branch from the check valve to the air bag is divided into two paths, one of which is connected to the independent air pressure detection sensor of the main control board for detecting the pressure value of the corresponding air bag, and the other of which is connected to an A or B port of the BF type electromagnetic valve. The other port of the electromagnetic valve serves as the air outlet for deflation. Figure 26 The air outlet of the electromagnetic valve corresponding to each air bag can be independently deflated. Figure 27 The air outlets of the electromagnetic valves corresponding to each air bag can also be connected together. Figure 28 The air outlets of the electromagnetic valves corresponding to each air bag are first connected to a check valve and then connected together.

[0211] As Figures 26 to 28 shown in the embodiments, for the aforementioned lifting function:

[0212] When the pillow needs to be raised as a whole, all solenoid valves are not powered, so only the control circuit and the air pump work during this period, and all solenoid valves do not work. The main control panel controls the air pump to work to deliver air flow through the control logic interface. At this time, because the BF type solenoid valve is not powered, the air bag has only one air inlet path, and each air bag will be inflated. When the specified pressure value is reached, the process stops, and the air pump and solenoid valve no longer work. If the length of this stage is h u , the energy consumption in this stage is W B h u + W Q h u .

[0213] When the pillow needs to be lowered as a whole, the air pump stops working, and the BF type solenoid valve corresponding to each air bag is powered. The length of this stage is h d , and the energy consumption in this stage is W B h d + nW BF h d .

[0214] When the air pressure of the air bag is released to a certain limit, the pillow surface reaches the desired height, and all solenoid valves are not powered, so the corresponding air bag no longer deflates. At this time, only the control circuit board maintains a working state. The stage after the air is inflated to the desired pressure value and the stage after the deflation reaches the desired pressure value is defined as an idle stage. The length of this stage is h idle , and the energy consumption in this stage is W B h idle .

[0215] It can be easily seen that the main power consumption stages are h u and h d , especially for multiple air bags, the power consumption of h d is the highest. In practical applications, the process of deflating to lower the height of the air bag accounts for a very small proportion of the entire sleep stage, and the length of the inflation stage h u is mainly related to the frequency of changes in sleeping posture during the user's sleep process.

[0216] As Figures 26 to 28 , in the embodiment, for the need to stop snoring:

[0217] When the control panel detects that the user is snoring and needs to adjust the height of a specific air bag, since the current scheme is to inflate all air bags when the air pump is delivering air, in order to form a change in the height of the pillow surface, a certain height difference needs to be formed. Therefore, the air bag needs to be inflated to a certain height first, i.e., h su length is required to make all air bags reach the specified pressure value, and the energy consumption in this stage is W B h su + (WQ +nW BF )h su .

[0218] Then deflate the specific one or more airbags to a certain height, so as to form a height difference with other airbags not deflated. The main control board controls the BF solenoid valve connected to the corresponding airbag to be powered on through the control logic interface, and the two air ports of the BF solenoid valve are connected. When the pressure in the corresponding airbag is higher than the outside, the airbag is deflated. The number of electromagnetic valves corresponding to the airbag to be deflated is a, and the energy consumption at this stage is W B h sd +aW BF h sd .

[0219] After the snoring intervention is implemented, the lifting mode is restored.

[0220] It can be seen that the energy consumption in the snoring stopping state is mainly related to the number of detected snoring times, the inflation time h su of a single intervention implementation, the number of BF solenoid valves participating in deflation a, and h sd . Usually a is one or two, that is, one or two airbags near the head are deflated.

[0221] In addition, the snoring stopping mode of the scheme can only deflate the specific airbag after inflating all the airbags, so if you want to adjust the height of the specific airbag multiple times, the efficiency is low, that is, the total air volume required for inflating multiple airbags is high, and under the same air flow, the inflation time required is long.

[0222] Different deflation port connection options are mainly engineering implementation considerations and user experience needs.

[0223] For example Figure 26 , the deflation port of each airbag is independently deflated and not connected together; or for example Figure 27 , the deflation port of each airbag is connected together for exhaust; or for example Figure 28 , the deflation port of each airbag is connected together for exhaust after passing through a check valve; the user's feeling of lying on a pillow is the same; mainly in engineering to reduce the airflow sound during deflation as much as possible, an silencer accessory is added to the air port; the silencer accessory includes porous or fluffy materials such as sponge, cotton, fabric, or a special exhaust silencer; therefore, the difference is whether to install one silencer accessory or multiple silencer accessories, in addition, the exhaust speed will also be slightly different, and the independent deflation is faster.

[0224] For example Figures 29 to 31The air charging and discharging logic realized by the scheme is that the air bags can be independently inflated and deflated. Figures 29 to 31 The air flow direction of the air charging includes two sections, from the air pump to the air valve, and from the air valve to the air bag; the air flow direction of the air discharging is from the air bag to the air valve and then to the outside atmosphere.

[0225] As shown in Figures 26 to 28 As shown in Figures 29 to 31 The air pressure sensor in the main control board is the aforementioned air pressure sensor. In addition to each air bag being connected to an independent air pressure sensor, the air pump is also connected to an air pressure sensor for detecting the pressure of the air pump in various states.

[0226] The energy consumption of the scheme in a specified time period can be represented by the following formula:

[0227]

[0228] Where H t is the specified time period, h qj is the length of the jth time slice in which the air pump is powered on in the specified H t time period, k is the total number of time slices in which the air pump is powered on in the specified H t time period, h bf is the cumulative time in which the BF-type solenoid valve is powered on in the specified time period H t , n is the total number of air bags, and h tfi is the cumulative time in which the ith TF-type solenoid valve is powered on in the specified time period H t .

[0229] As shown in Figure 30, the gas pipeline of the air pump to each air bag can be connected to a check valve and then connected to a TF type electromagnetic valve. The check valve can be installed in the connection between the TF type electromagnetic valve and the air bag. If the check valve is not installed, the gas paths of the air bags will be connected when the TF type electromagnetic valves of two or more air bags are powered on. If the check valve is installed, the above situation will not occur. The installation of the check valve can prevent the air pressure in two or more air bags from being rapidly reduced due to the balance of air pressure when the air bag that has been inflated is connected to another air bag or multiple air bags that have not been inflated. If the check valve is not installed, the above problem may occur, although it does not affect the overall function, but it may occasionally cause a poor experience. After the TF type electromagnetic valve, in the on state of the electromagnetic valve, one gas port is connected to the input gas port, i.e., the air pump can be connected to the air bag and connected to the air pressure sensing device of the main control board. Another gas port of the TF type electromagnetic valve is connected to the gas port connected to the air bag in the off state of the electromagnetic valve, serving as the air release path of the air bag.

[0230] As Figures 29 to 31 In the embodiment, for the lifting function requirement:

[0231] When the entire pillow surface needs to be raised, all n TF type electromagnetic valves corresponding to the air bags need to be powered on, and the BF type electromagnetic valve is not powered on, so that the air flow of the air pump can enter the corresponding air bag until the specified pressure value corresponding to the height is reached. The duration of this stage is h u The energy consumption in this stage is W B h u +W Q h u +nW TF h u Compared with the first scheme of Figures 26 to 28 , the n electromagnetic valves work in this stage, and the energy consumption is much higher.

[0232] When the h u stage ends, i.e., the air bag pressure value reaches the expected value, the air pump stops working, and all electromagnetic valves are not powered on. Although the TF type electromagnetic valve is not powered on, it can open the air release path of the air bag, but because of the existence of the BF type electromagnetic valve, the gas path is closed when the BF type electromagnetic valve is not powered on, so that all air bags can be maintained without air release.

[0233] When the entire pillow surface needs to be lowered, only the BF type electromagnetic valve needs to be powered on, i.e., the duration of this stage is h d The energy consumption in this stage is W B h d +W BF h dCompared to the first scheme where n solenoid valves operate, only one solenoid valve operates in this stage, resulting in much lower energy consumption.

[0234] like Figures 29 to 31 In the embodiments, regarding the need for anti-snoring:

[0235] When the control panel detects snoring and needs to adjust the height of a specific airbag, it first deflates all airbags to their lowest height, then opens the TF-type solenoid valve corresponding to the specific airbag to inflate it. The duration of this phase is recorded as h. su If the number of TF-type solenoid valves corresponding to the airbags involved in inflation is 'a', then the energy consumption in this stage is W. B h su +aW TF h su .

[0236] When the height of the inflated airbag needs to be lowered to deflate it, the TF-type solenoid valve corresponding to the airbag is de-energized, and the BF-type solenoid valve in the deflation path is energized. Let the duration of this stage be h. sd Then the energy consumption in this stage is W. B h sd +W BF h sd Compared to Option 1, the energy consumption at this stage is also lower.

[0237] and Figures 29 to 31 Compared to the previous embodiment, Figure 34 The advantage of this embodiment lies mainly in the anti-snoring implementation stage, because it can inflate or deflate a designated airbag, making the overall inflation and deflation efficiency much higher.

[0238] Currently, there are two main types of smart pillows on the market: adjustable pillows and anti-snoring pillows. No product currently available combines both functions. Adjustable pillows on the market primarily use a single airbag, so we won't compare them here. As for anti-snoring pillows, if they cannot detect sleeping posture, they lack the height adjustment function based on sleeping posture, which is different from the function of this invention. Figure 32 The main differences in the embodiments are twofold. One is that head position detection is accomplished by a pressure sensor placed directly below the airbag, while the present invention is accomplished by combining changes in airbag pressure and pressure sensors placed on the shoulder or under the body. The other difference is that the present invention adds a BF-type solenoid valve and a check valve, with the BF-type solenoid valve playing the most important role. The addition of this component enables the combined function of lifting and snoring prevention with lower energy consumption.

[0239] If Figure 33If the BF type electromagnetic valve in the embodiment is removed, it can be seen that for the lifting function, if all the air bags are inflated and it is desired to keep all the air bags at the current height without deflation, all the TF type electromagnetic valves need to be continuously powered on, and the time for maintaining the height is h hold The energy consumption of this stage is W B h h old +nW TF h h old The current of one electromagnetic valve is about 300mA, and if there are five electromagnetic valves, the current is 1.5A, which is obviously not practical to maintain for a long time under such a high current.

[0240] The two-purpose pillow provided by the application has a high cost performance, and can realize lifting and snoring stopping.

[0241] If the check valve is optionally added to the deflation passage, it can be seen that if the check valve is not added, the deflation passages of multiple air bags are connected, when the pressure value of one air bag is higher, if the three-way electromagnetic valves of the air bag with low pressure and the air bag with high pressure are all powered off, and their deflation passages are all opened, the air of the air bag with high pressure will flow to the air bag with low pressure, and the user will feel that the heights of the air bags are averaged in a short time, if the pressure difference of the air bags is large, the user will feel a falling sensation. After the check valve is added, this situation will not occur.

[0242] The pressure sensing belt is a relatively independent module or accessory, and is electrically connected to the main control board through an external interface to realize data interaction, and is a necessary module included in the smallest system introduced in the application. The number of sensing points m of the pressure sensing belt in the "row" direction is greater than the number n of air bags, and more preferably at least 2n≤m.

[0243] Further, for the distribution of the air bags, the form of Figure 32 can also be used. In actual application, the air bags Q1-Q i The air bags Q1-Qn in the first row correspond to the position of the user's head on the pillow, and the air bags Qi+1-Qn in the second row correspond to the position of the user's neck on the pillow. When i is equal to n, there is only one row of air bags, and when i+1 is equal to n, there is only one air bag in the second row.

[0244] For example, Figure 33 and Figure 31A control method of an air pillow, the air pillow comprising a main control module, a plurality of independent air bags, a plurality of pressure sensors, and an ADC converter; a pressure sensing end of a pressure sensor is in communication with an air bag, and the pressure sensor is used to obtain the pressure of the independent air bag; the ADC converter is in electrical signal connection with the pressure sensor; the main control module is in electrical signal connection with the ADC converter; the main control module obtains the pressure data of the pressure sensor, i.e., the pressure data in the corresponding air bag, through the ADC converter; the main control module analyzes and obtains the key air bag currently supporting the head according to all the obtained air bag pressure data; and the main control module controls the ADC converter to improve the sampling frequency and sampling accuracy of the pressure sensor in communication with the key air bag. The ADC converter can be an ADC on a MCU or CPU or other type of processor in the main control module or an independently arranged external ADC converter. The above control process can be completed by the main controller.

[0245] As Figure 35 and Figure 32 A control method of an air pillow, the air pillow comprising a main control module, a plurality of independent air bags, a plurality of pressure sensors, an A group of ADC converters, and a B group of ADC converters; a pressure sensing end of a pressure sensor is in communication with an air bag, and the pressure sensor is used to obtain the pressure of the independent air bag; an A multiplexer is in electrical signal connection with the A group of ADC converters; a B multiplexer is in electrical signal connection with the B group of ADC converters; the plurality of pressure sensors are in electrical signal connection with the A group of ADC converters through the A multiplexer; the plurality of pressure sensors are in electrical signal connection with the B group of ADC converters through the B multiplexer; the main control module controls the corresponding pressure sensor to be in electrical signal connection with the A group of ADC converters through the control of the A multiplexer, so as to obtain the pressure data of the corresponding pressure sensor, i.e., the pressure data in the corresponding air bag; the main control module analyzes and obtains the key air bag currently supporting the head according to all the obtained air bag pressure data; the main control module controls the corresponding pressure sensor to be in electrical signal connection with the B group of ADC converters through the control of the B multiplexer, so as to obtain the pressure data of the corresponding pressure sensor of the key air bag, i.e., the pressure data in the key air bag; the AD conversion accuracy of the B group of ADC converters is higher than that of the A group of ADC converters; and the sampling frequency of the B group of ADC converters is also higher than that of the A group of ADC converters. The A multiplexer and the B multiplexer are multiple selection devices and can be controlled by the main control module. Each time, one channel is connected, i.e., the output of one pressure sensor is input to the ADC after being amplified by an amplifier.

[0246] The number of key air bags that support the head is relatively small, usually 1-2, relative to the total number of air bags, so the connection switching between the B multiplexer and the B group of ADC converters can be more frequent, thereby obtaining a higher sampling frequency. To perform more in-depth physiological signal correlation analysis based on the pressure signals of the air bags, the B multiplexer and the B group of ADC converters can obtain a higher upper limit of the sampling frequency than the A multiplexer and the A group of ADC converters.

[0247] Figure 33 and Figure 36 , further comprising a pressure sensor array; the pressure sensor array is arranged below the air bags or arranged on one side of the air pillow body; the master control module and the pressure sensor array are electrically connected to obtain pressure array data; the master control module analyzes the obtained pressure array data to obtain the key air bag currently supporting the head; or the master control module jointly analyzes the obtained pressure array data and all air bag pressure data to obtain the key air bag currently supporting the head.

[0248] As Figure 37 and Figure 36 , the key air bag has multiple; the B multiplexer switches in turn, and each time the pressure sensor of one key air bag is electrically connected to the B group of ADC converters for pressure data sampling; based on the key air bag pressure data obtained by the B group of ADC converters, weak vibration signal analysis, snoring correlation analysis, pulse wave signal extraction, and heart rate signal analysis are performed.

[0249] Sleep posture and head position analysis are performed based on the pressure value data set of the pressure detection belt and the multiple air bags. For example, the pressure detection belt is placed between the user's shoulders and the back, and the pressure detection belt has 1 row and 16 columns, i.e., [1, 16]. When the user lies flat, the pressure distribution pattern is as shown in Figure 37 When the user lies on one side, the pressure distribution pattern is as shown in Figure 35

[0250] As Figures 31 to 35 and Figure 33 can be seen, the user will exhibit a relatively obvious pressure distribution on the pressure detection belt when lying flat and lying on one side, which can be used for preliminary sleep posture judgment by using a classic algorithm (such as analyzing the slope, inflection point, and corner point distribution relationship) or an artificial intelligence method (constructing a simple artificial neural network and collecting the data set of lying flat and lying on one side as a training set). At the same time, the pressure distribution data of the pressure detection belt can also be used for preliminary head position judgment.

[0251] As Figure 33 ​The pressure detection belt and the multi-air bag used as the pressure sensing array are placed horizontally and symmetrically left and right; the position index calculation formula of the key air bag currently supporting the head according to the pressure sensing array data analysis is Idx head n is the total number of air bags, m is the number of pressure sensing points of the pressure detection belt, and Pi is the pressure value corresponding to the i-th sensing point of the pressure detection belt; when Idx head is not n, Idx head and Idx head +1 are selected as the key air bag indexes corresponding to the head position.

[0252] As Figure 32 , it also includes an air pump, and pressure data in the air bag is collected during the inflation and deflation of the air pump; the main control module analyzes and obtains the key air bag currently supporting the head according to the obtained pressure data of all air bags during inflation and deflation.

[0253] The pressure detection belt obtains the pressure change data of the user's neck, shoulders, and back, and as a relatively independent accessory, the pressure sensing belt on the market is generally divided into resistance type and capacitance type from the manufacturing process. The relative sensitivity of the resistance type is relatively low, but it can continuously reflect the absolute size of the pressure, and the sensing sensitivity of the capacitance type is high, but it mainly reflects the pressure change information. In actual application, according to different needs, one kind can be used alone or in combination.

[0254] The pressure sensor corresponds to the pressure of the n air bags and the initial airway part of the air pump, and the pressure detection of the initial airway part of the air pump is mainly to prevent airway blockage or accidental triggering of the air pump. When the subsequent air path is not connected to the air bag, the pressure in the air path will increase rapidly, causing the pipe connection to be disconnected or the vibration noise to increase when the air pump is under high load.

[0255] A multi-channel selector, i.e., multi-channel selector 1, and ADC1, i.e., A group ADC converter; B multi-channel selector, i.e., multi-channel selector 2, and ADC2, i.e., B group ADC converter; multi-channel selector 1 and its corresponding ADC1 mainly perform real-time detection on the pressure of n+1 air paths. Considering the potential number of air bags, the more the number of air bags, the more time is needed for switching through multi-channel selection. At the same time, considering that the data acquisition of ADC1 needs a build-up time after channel switching, the maximum sampling frequency of each channel will be limited accordingly. Therefore, two sets of ADC channels are designed, multi-channel selector 2 and its corresponding ADC2 mainly perform high-frequency and high-resolution signal acquisition on the pressure of a specific air bag or a few air bags. The specific process is as follows ​ADC1 can be a common 10-bit ADC, and ADC2 can be a higher resolution 12-bit or higher ADC.

[0256] As ​ , an audio DAC and corresponding audio output driver and speaker can be set as device voice prompt or intervention implementation components. An audio acquisition ADC and corresponding audio amplification and audio acquisition sensor can be set as sound detection components, mainly for detecting user snoring. An electromagnetic valve and air pump driver can be used to enable the MCU to issue control signals to implement the desired action on the corresponding components. A data storage module can be used to save detected user physiological data.

[0257] As ​ , the main control board includes an MCU; it also includes an external interface, which includes various electrical connections and wired communication (such as serial ports, parallel ports, SPI, I 2 2C, etc.) and wireless communication interfaces (Bluetooth, wifi, NFC, 3G, 4G, 5G, etc.). For example, in the following example, on the one hand, the pressure detection belt communicates with the main control board through the serial port and reports the detected pressure array data; on the other hand, the mobile phone app can communicate with the main control board through Bluetooth or wifi, set user parameters, obtain setting information, detection and analysis data, and the main control board can also indirectly establish a data exchange channel with the cloud server through the mobile phone app; in addition, the main control board can also directly send or obtain setting information, detection, analysis data, etc. through the mobile communication module through 3G, 4G, 5G, etc. mobile communication protocols to the cloud server.

[0258] After the control board is powered on and started, it sets and starts data collection on the external interface, multi-channel selector 1, ADC1, and at the same time obtains data from the pressure detection belt through the external interface and obtains audio data through the audio acquisition channel.

[0259] According to the pressure value data set of the pressure detection belt and the multiple air bags, sleep posture and head position analysis is performed.

[0260] According to the detected head position, it is determined which or which several air bags corresponding to the head position need to be opened for high-frequency high-resolution data collection of the pressure, usually 1-2, so as to set the multi-channel selector 2 and the ADC2 to start high-frequency high-resolution data collection.

[0261] For the acquired data of ADC2, combined with the data of ADC1 and the pressure detection belt, it can be used to analyze the weak physiological signals formed by the head pressure on the corresponding air bag, such as heart rate analysis, pulse wave extraction, etc. Combined with audio data, the data of snoring, weak high-frequency vibration data transmitted to the air bag, and pressure change data of the pressure detection belt can be integrated to realize snoring detection, which is more advantageous than analyzing only from sound or pressure change.

[0262] According to the analysis result, corresponding intervention measures are implemented, such as adjusting the height of the pillow according to the sleeping position information, and adjusting the local height of the pillow according to snoring. If the lifting and snoring intervention conditions are triggered at the same time, one of them can be implemented according to the user preference setting. In actual application, when the snoring intervention function is turned on, the snoring intervention is given priority by default.

[0263] In terms of data analysis algorithm, there are too many excellent algorithms in the prior art that can be referred to, and the present application will not be repeated. In general, it can be divided into classical methods and artificial intelligence methods. For the most rapidly developing and applied artificial intelligence method at present, the proportion of data acquisition and training to the contribution of algorithm results is becoming larger and larger.

[0264] The training data can be obtained by wearing corresponding medical equipment during the use of the pillow. For example, by using PSG system to obtain sleep staging, apnea, sleep disorders, etc., other similar physiological data such as pulse wave, heart rate, blood pressure, blood oxygen, and nasal breath can be obtained. Further, medical workers, experts, and scholars in the relevant field can be invited to further label the data. The overall system framework from data formation to analysis and real-time intervention is described in the application "Purpose-oriented physiological intervention method and system", application number 2022112052232.

[0265] In summary, the analysis method of the present application can obtain multi-dimensional user physiological data information, so as to implement more accurate and effective intervention on the user. For example, when the person who rests in the same room as the user snores, instead of the user himself, the pillow analyzes the snoring sound through sound collection, but through the data of the air bag and the pressure belt, the user does not have the vibration characteristics associated with snoring, so in this case, no intervention is implemented.

[0266] The data acquisition and intervention method can be completed by connecting corresponding modules through external data interface. For example, in addition to the current air bag inflation and deflation, a loudspeaker can be connected to play sound, a wireless or wired atomizer, an electronic incense burner, etc.

[0267] The dual-purpose pillow in the application proposes two air path connection and management methods, which can realize the lifting and snoring stopping adjustment of the pillow with multiple air bags, that is, the pillow surface angle changing function, at a high cost performance. In the application, an implementation scheme of independent high-frequency collection of air path pressure of multiple air bags is proposed, which lays a foundation for analyzing and obtaining more detailed user physiological data in the time dimension.

[0268] In the application, a scheme of independent detection of multiple independent air paths including the air pump air path is proposed, which can control the fault occurrence probability in the actual production, user use and after-sales process, and quickly locate the fault point in the air path. In the application, multi-dimensional data comprehensive correlation analysis can be performed to reduce false triggering intervention and improve intervention effect and sleep quality.

[0269] The multi-air bag pillow air valve assembly in the application has at least two air valves, the valve head includes a P port and an A port; the P1 and P2 branch air paths of the P port are in communication; the A port of the QFA air valve is used to connect an external air source; the P1 port of the QFA air valve and the P1 port of the QFB air valve are used to connect external air bags. The combination of multiple air valves saves space, optimizes the air path connection relationship, and facilitates individual control of multiple air bags. The dual-purpose air pillow and the control method based on the above multi-air bag pillow air valve assembly can be used for snoring stopping and height adjustment; in the height lifting control mode, multiple air bags are inflated or deflated to control the height; in the snoring stopping mode, according to external instructions, the specified air bag can be individually inflated and deflated.

[0270] In the air pillow of the application, the pressure data of the air bag internal pressure sensor or pressure sensor array can be used to identify the key air bag, and the internal pressure of the key air bag can be sampled at a higher quality, thereby providing a data basis for subsequent in-depth and detailed pressure data application.

[0271] Although the application is described and illustrated according to the preferred embodiments and several alternative schemes, the application will not be limited by the specific description in the specification. Other additional alternatives or equivalent components can also be used to practice the application.

Claims

1. A multi-air-bag pillow air valve assembly, characterized in that: it comprises at least two air valves; the air valves comprise a QFA air valve and a QFB air valve; the air valves comprise a solenoid valve body, a solenoid shaft, and a valve head; the valve head comprises the P port and the A port; the energization or de-energization of the solenoid valve body changes the position of the solenoid shaft, the change in the position of the solenoid shaft changes the internal communication relationship in the valve head; the P port comprises two branches, namely a P1 branch and a P2 branch, and the P1 branch and the P2 branch are in airway communication; the A port of the QFA air valve is used to connect an external air source; the P1 port of the QFA air valve is used to connect an external air bag; the P1 port of the QFB air valve is used to connect an external air bag.

2. The multi-air-bag pillow air valve assembly according to claim 1, characterized in that: the valve head further comprises a B port; the B port of the QFA air valve is connected to the A port of the QFB air valve; state 1: the solenoid shaft moves to the first position, and the P port of the valve head is in communication with the A port or the B port; state 2: the solenoid shaft moves to the second position, and the P port of the valve head is not in communication with the A port or the B port.

3. The multi-air-bag pillow air valve assembly according to claim 2, characterized in that: it comprises any one of the following technical features: TA1: the QFA air valve or the QFB air valve is a two-position two-way air valve; the valve head comprises a QS1 air chamber and a QS2 air chamber; the QS1 air chamber and the QS2 air chamber are connected, the A port or the B port of the valve head is in communication with the QS1 air chamber, and the P port of the valve head is in communication with the QS2 air chamber; state 1: the solenoid shaft moves to the first position to block the connection passage between the QS1 air chamber and the QS2 air chamber; state 2: the solenoid shaft moves to the second position, and the QS1 air chamber is in communication with the QS2 air chamber; TA2: the QFA air valve or the QFB air valve is a two-position three-way air valve; state 1: the solenoid shaft moves to the first position, and the P port of the valve head is in communication with the A port; the P port of the valve head is not in communication with the A port or the B port; state 2: the solenoid shaft moves to the second position, and the P port of the valve head is not in communication with the A port or the B port; the A port or the B port of the valve head is in communication; the solenoid shaft comprises an A channel and a B channel; state 1: the solenoid shaft moves to the first position, and the A channel connects the P port and the A port; state 2: the solenoid shaft moves to the second position, and the B channel connects the B port and the A port, and the P port is not in communication with the A port or the B port; TA3: the inner diameter of the A port of the air valve is equal to the outer diameter of the B port of the air valve; the B port of the QFA air valve is connected to the A port of the QFB air valve in a sleeved manner; at least one of the P port, the A port, and the B port of the air valve is provided with a one-way valve.

4. The multiple bladder pillow gas valve assembly of claim 1, wherein, the the QFA air valve and the QFB air valve are connected in series to form an integrated whole, and the A port of the air valve and the B port of the air valve are in communication in a head-to-tail manner; or the QFA air valve and the QFB air valve are connected in parallel to form an integrated whole, and the A ports of the air valves point in the same direction.

5. An inflatable pillow, characterized by: it comprises at least two air bags, at least two air pressure sensors, and the air valve assembly according to any one of claims 1 to 4; the air bags comprise an air bag QA and an air bag QB; the air pressure sensors comprise an air pressure sensor CGQA and an air pressure sensor CGQB; the air pressure sensor comprises an air inlet and outlet. The inlet and outlet of sensor CGQA are connected to the P2 port of QFA valve through a pipe; The inlet and outlet of sensor CGQB are connected to the P2 port of QFB valve through a pipe; The P1 port of QFA valve is connected to air bag QA; The P1 port of QFB valve is connected to air bag QB.

6. A dual-purpose air pillow, characterized in that: It can be used to stop snoring and adjust height; It includes air pump, multiple valves, multiple independent air bags; One valve and one end of one air bag are connected, and the valve is used to control the inflation or deflation of the air bag; The valve is a two-state two-way valve, i.e. BF type electromagnetic valve; one end of each BF type electromagnetic valve is connected to one air bag; the other end of each BF type electromagnetic valve is connected to the atmosphere; when the BF type electromagnetic valve is in the first state, the air pump and each air bag are connected through each BF type electromagnetic valve; when the air pump works, the air bag is inflated; when the BF type electromagnetic valve is in the second state, each air bag is connected to the outside atmosphere; It also includes multiple AN one-way valves; the outlet of each AN one-way valve is connected to the air bag, and the inlet of each AN one-way valve is connected to the outlet of the air pump.

7. The dual-purpose air pillow according to claim 6, characterized in that: It also includes multiple BN one-way valves; the inlet of each BN one-way valve is connected to one end of the BF type electromagnetic valve, and the outlet of each BN one-way valve is connected to the outside atmosphere.

8. A dual-purpose air pillow, characterized in that: It can be used to stop snoring and adjust height; It includes air pump, multiple valves, multiple independent air bags; One valve and one end of one air bag are connected, and the valve is used to control the inflation or deflation of the air bag; The valve includes multiple two-state three-way valves, i.e. TF type electromagnetic valves; one end of each TF type electromagnetic valve is connected to one air bag; the other end of each TF type electromagnetic valve is connected to the air pump; the other end of each TF type electromagnetic valve is connected to the outside atmosphere through a two-state two-way valve, i.e. BF type electromagnetic valve M; when the TF type electromagnetic valve is in the first state, the air pump and each air bag are connected through each TF type electromagnetic valve; when the air pump works, the air bag is inflated; when the TF type electromagnetic valve is in the second state, each air bag is connected to the outside atmosphere through the TF type electromagnetic valve; BF type electromagnetic valve M is in the first state, and the other end of each TF type electromagnetic valve is connected to the outside atmosphere through BF type electromagnetic valve M; BF type electromagnetic valve M is in the second state, and the other end of each TF type electromagnetic valve is not connected to the outside atmosphere; It also includes multiple CN one-way valves; the inlet of each CN one-way valve is connected to the air pump, and the other end of each CN one-way valve is connected to one end of the TF type electromagnetic valve.

9. The dual-purpose air pillow according to claim 8, characterized in that: It also includes multiple DN one-way valves; the inlet of each DN one-way valve is connected to one end of the TF type electromagnetic valve, and the other end of each DN one-way valve is connected to the outside atmosphere.

10. A control method for a dual-purpose air pillow, characterized in that: Based on the dual-purpose air pillow, the dual-purpose air pillow includes main control board, valve, air pump, multiple independent air bags; The dual-purpose air pillow can be used to stop snoring and adjust height; It includes two working modes: The first working mode is height control mode; When the pillow is raised, the air pump and the air bags are connected, the air pump inflates the air bags, and the pillow height is raised; When the pillow is lowered, the main control board controls the air valve to connect the air bags with the atmosphere, and the air is released; when the target pressure is reached, the air valve is closed, the air bags are not connected with the atmosphere, and the pillow height is maintained; The second working mode is snore stopping mode; According to the external instruction, the specific air bags that need to be inflated and deflated are obtained; For the CQ air bag that needs to be inflated, the air pump is started to inflate the CQ air bag; For the FQ air bag that needs to be deflated, the corresponding air valve is opened to connect the FQ air bag with the atmosphere, and the air is released; when the target pressure is reached, the air valve is closed, the FQ air bag is not connected with the atmosphere, and the pressure of the FQ air bag is maintained.

11. The control method of the dual-purpose air pillow according to claim 10, wherein In the dual-purpose air pillow, one air valve and one end of one air bag are connected, and the air valve is used to control the inflation or deflation of the air bag; The air valve is a two-state two-way valve, namely a BF type electromagnetic valve; one end of each BF type electromagnetic valve is connected with one air bag; the other end of each BF type electromagnetic valve is connected with the air pump; when the BF type electromagnetic valve is in the first state, the air pump and the air bags are connected through the BF type electromagnetic valve; when the BF type electromagnetic valve is in the second state, the air bags are connected with the external atmosphere; The dual-purpose air pillow further comprises a plurality of AN one-way valves; the air outlet end of each AN one-way valve is connected with the air bag, and the air inlet end of each AN one-way valve is connected with the air outlet of the air pump; The dual-purpose air pillow further comprises a plurality of BN one-way valves; the air inlet end of each BN one-way valve is connected with one end of the BF type electromagnetic valve, and the air outlet end of each BN one-way valve is connected with the external atmosphere.

12. The control method of the dual-purpose air pillow according to claim 10, wherein In the dual-purpose air pillow, one air valve and one end of one air bag are connected, and the air valve is used to control the inflation or deflation of the air bag; The air valve comprises a plurality of two-state three-way valves, namely TF type electromagnetic valves; one end of each TF type electromagnetic valve is connected with one air bag; the other end of each TF type electromagnetic valve is connected with the air pump; the other end of each TF type electromagnetic valve is connected with the external atmosphere through a two-state two-way valve, namely a BF type electromagnetic valve M; when the TF type electromagnetic valve is in the first state, the air pump and the air bags are connected through the TF type electromagnetic valve; when the TF type electromagnetic valve is in the second state, the air bags are connected with the external atmosphere through the TF type electromagnetic valve; the BF type electromagnetic valve M is in the first state, and the other end of each TF type electromagnetic valve is connected with the external atmosphere through the BF type electromagnetic valve M; the BF type electromagnetic valve M is in the second state, and the other end of each TF type electromagnetic valve is not connected with the external atmosphere; The dual-purpose air pillow further comprises a plurality of CN one-way valves; the air inlet end of each CN one-way valve is connected with the air pump, and the other end of each CN one-way valve is connected with one end of the TF type electromagnetic valve; The dual-purpose air pillow further comprises a plurality of DN one-way valves; the air inlet end of each DN one-way valve is connected with one end of the TF type electromagnetic valve, and the other end of each DN one-way valve is connected with the external atmosphere.

13. A control method of an air pillow, characterized in that: the air pillow comprises a master control module, a plurality of independent air bags, a plurality of pressure sensors, and an ADC converter; a pressure sensor is in communication with an air bag, and the pressure sensor is used to obtain the pressure of the independent air bag; the ADC converter is in electrical signal connection with the pressure sensor; and the master control module is in electrical signal connection with the ADC converter; the master control module obtains the pressure data of the pressure sensor, i.e., the pressure data in the corresponding air bag, through the ADC converter; the master control module analyzes all the obtained air bag pressure data to obtain the key air bag currently supporting the head; the master control module controls the ADC converter to improve the sampling frequency and sampling accuracy of the pressure sensor in communication with the key air bag.

14. The control method of the air pillow according to claim 12, characterized in that: a pressure sensor array is further included; the pressure sensor array is arranged below the air bag or on one side of the main body of the air pillow; the master control module is in electrical signal connection with the pressure sensor array to obtain the pressure array data; the master control module analyzes the obtained pressure array data to obtain the key air bag currently supporting the head; or the master control module jointly analyzes the obtained pressure array data and all the air bag pressure data to obtain the key air bag currently supporting the head.

15. The control method of the air pillow according to claim 14, characterized in that: the pressure detection belt used as the pressure sensor array and the plurality of air bags are horizontally and symmetrically arranged when placed; The position index of the key airbag currently supporting the head is calculated according to the pressure sensing array data analysis formula Idx head For the corresponding head air bag position, n is the total number of air bags, m is the number of pressure sensing points of the pressure detection belt, and Pi is the pressure value corresponding to the i th sensing point of the pressure detection belt. When Idx head is not n, Idx head is selected as the key airbag index corresponding to the head position of the two airbags head +1.

16. The control method of the air pillow according to claim 12, characterized in that: the ADC converter comprises a group A ADC converter and a group B ADC converter; the output signals of the plurality of pressure sensors are in electrical signal connection with the group A ADC converter through an amplifier and an A multiplexer after being output by the amplifier; the output signals of the plurality of pressure sensors are in electrical signal connection with the group B ADC converter through an amplifier and a B multiplexer after being output by the amplifier; the master control module controls the corresponding pressure sensor to be in electrical signal connection with the group A ADC converter through the A multiplexer, so as to obtain the pressure data of the corresponding pressure sensor, i.e., the pressure data in the corresponding air bag; the master control module analyzes all the obtained air bag pressure data to obtain the key air bag currently supporting the head; the master control module controls the corresponding pressure sensor to be in electrical signal connection with the group B ADC converter through the B multiplexer, so as to obtain the pressure data of the corresponding pressure sensor of the key air bag, i.e., the pressure data in the key air bag; the AD conversion accuracy of the group B ADC converter is higher than that of the group A ADC converter; and the sampling frequency of the group B ADC converter is also higher than that of the group A ADC converter; there are a plurality of key air bags; the B multiplexer is switched in sequence, and the pressure sensor of one key air bag is connected to the group B ADC converter in electrical signal connection each time to sample the pressure data; based on the key air bag pressure data obtained by the group B ADC converter, weak vibration signal analysis, snoring correlation analysis, pulse wave signal extraction, and heart rate signal analysis are performed.

17. The method of claim 13, wherein, the method further comprises a gas pump, and a data acquisition device for collecting pressure data of the plurality of independent air bags during the process of inflating or deflating the air bags; and the master control module analyzes the pressure data of the air bags during the process of inflating or deflating to obtain the key air bags that support the head.

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