Pressure regulating mattress and method of controlling the same

Abstract

The application discloses a pressure regulating mattress and a control method thereof, wherein one side of the pressure regulating mattress is provided with an adjusting display area, and the pressure regulating mattress comprises a master control device, pressure regulating devices, a limiting bin and a display assembly; the pressure regulating devices are multiple groups; the pressure regulating devices can adjust the size of the body volume according to the master control signal output by the master control device and / or change the size of the body volume according to the received pressure; the limiting bin is arranged in the mattress and is used for fixing the pressure regulating devices; the input end of the display assembly is connected with the output end of the master control device, and the display assembly displays relevant information according to the display signal output by the master control device. The application aims to improve the sleep comfort of users.

Description

Technical Field

[0001] This invention relates to the field of smart home technology, and in particular to a pressure-adjustable mattress and its control method. Background Technology

[0002] Currently, springs are commonly used as a support structure inside beds and mattresses. However, the number of springs is limited and they are not evenly or densely distributed. When someone lies on the bed, the deformation of the surface cannot properly match the human body, resulting in insufficient comfort. Furthermore, springs have the drawback of low durability; their elasticity decreases significantly after a period of use, greatly diminishing the user experience. They also cannot conform to the curves of the human body according to the different pressures exerted by different parts of the body, failing to provide a good sleep experience. Summary of the Invention

[0003] The main objective of this invention is to provide a pressure-adjustable mattress designed to improve the user's sleep comfort.

[0004] To achieve the above objectives, the present invention proposes a pressure-adjustable mattress, wherein one side of the pressure-adjustable mattress is provided with an adjustment display area, and the pressure-adjustable mattress includes:

[0005] Main control device;

[0006] A pressure regulating device, wherein the input end of the pressure regulating device is connected to the output end of the main control device; there are multiple pressure regulating devices, and the pressure regulating devices can adjust their own volume according to the main control signal output by the main control device and / or autonomously change their own volume according to the received pressure.

[0007] A positioning chamber, located inside the mattress, is used to fix the pressure adjustment device.

[0008] The display component has its input end connected to the output end of the main control device, and displays relevant information according to the display signal output by the main control device.

[0009] Preferably, the pressure regulating device includes:

[0010] A control circuit, the input terminal of which is connected to the output terminal of the main control device, and the control circuit can perform corresponding actions according to the main control signal output by the main control device;

[0011] An airbag, wherein an opening is provided on one side;

[0012] A pressure detection circuit is provided, which is located on the side of the airbag facing away from the opening. The output terminal of the pressure detection circuit is connected to the input terminal of the control circuit and outputs a pressure detection signal to the control circuit.

[0013] A pressure pump is disposed on one side of the airbag opening. The controlled end of the pressure pump is connected to the output end of the control circuit and opens / closes according to the control signal output by the control circuit. When the pressure pump is in the closed state, the airbag is in a sealed state.

[0014] The pressure detection circuit includes a first strain gauge resistor, a second strain gauge resistor, a third strain gauge resistor, a fourth strain gauge resistor, a first resistor, a second resistor, a third resistor, an operational amplifier, a first capacitor, and a second capacitor. The first ends of the first and second strain gauge resistors are connected to a power supply terminal. The second ends of the first and fourth strain gauge resistors are connected to the first ends of the first resistor. The second ends of the second and third strain gauge resistors are connected to the first ends of the second resistor. The second ends of the third and fourth strain gauge resistors are connected to a ground terminal. The second end of the first resistor is connected to the inverting input terminal of the operational amplifier. The second end of the second resistor is connected to the non-inverting input terminal of the operational amplifier. The first end of the third resistor is connected to the inverting input terminal of the operational amplifier, and the second end of the third resistor is connected to the output terminal of the operational amplifier. The output terminal of the operational amplifier is connected to the input terminal of the control circuit. The first end of the first capacitor is connected to the first end of the second resistor, and the second end of the first capacitor is connected to the ground terminal. The first end of the second capacitor is connected to the first end of the third resistor, and the second end of the second capacitor is connected to the second end of the third resistor.

[0015] Preferably, the pressure detection circuit further includes a pressure sensor, which is disposed at the airbag opening, and the output terminal of the pressure sensor is electrically connected to the input of the control circuit; the pressure sensor is used to detect the air pressure inside the airbag and output a pressure detection signal to the control circuit.

[0016] Preferably, the pressure pump comprises:

[0017] An air pump, the controlled end of which is connected to the output end of the control circuit, the air pump being opened / closed according to the control signal output by the control circuit, so that gas enters / exits the airbag through the air pump;

[0018] A gas filtration device is provided at the gas input port of the gas pump to isolate impurities other than air.

[0019] Preferably, the pressure regulating device further includes a temperature detection circuit, which is located on the side of the airbag facing away from the opening. The output terminal of the temperature detection circuit is connected to the input terminal of the control circuit and outputs a temperature detection signal to the control circuit.

[0020] Preferably, the airbag has a detection area on the side facing away from the opening, and the detection area is a rectangular detection area;

[0021] Pressure detection circuits are located near the top corner and center of the rectangular detection area; temperature detection circuits are located around the perimeter of the rectangular detection area.

[0022] Preferably, the pressure regulating device further includes a temperature regulating circuit, which is disposed on the side of the airbag facing away from the opening. The input terminal of the temperature regulating circuit is connected to the output terminal of the control circuit, and the temperature of the temperature regulating circuit is increased according to the temperature regulating control signal output by the control circuit.

[0023] The present invention also proposes a control method for a pressure-adjustable mattress, comprising the following steps:

[0024] The main control unit in the pressure-adjustable mattress receives the current touch signal and controls the switching circuit to close.

[0025] The pressure regulating device acquires the pressure detection signal through the pressure detection circuit and transmits it to the control circuit;

[0026] The control circuit controls the opening amplitude and duration of the pressure pump in the pressure regulating device based on the pressure detection signal.

[0027] The pressure pump opens at a time that is preset by the control circuit based on the current pressure detection signal.

[0028] The control circuit shuts down the pressure pump according to a preset time.

[0029] When the control circuit receives a pressure detection signal that reaches a preset value, it controls the opening amplitude and duration of the pressure pump.

[0030] The pressure pump opens at the same preset time.

[0031] The control circuit controls the pressure pump to close according to a preset time.

[0032] Preferably, after the main control device in the pressure-adjustable mattress acquires the current touch signal and controls the switch circuit to close, the following steps are further included:

[0033] The pressure regulating device acquires the temperature detection signal through the temperature detection circuit and transmits it to the control circuit.

[0034] The control circuit controls the temperature regulation circuit in the temperature regulation device to raise the temperature based on the temperature detection signal;

[0035] The control circuit acquires the temperature detection signal through the temperature detection circuit;

[0036] The control circuit identifies the temperature based on the temperature detection signal and controls the temperature modulation device to stop heating when the preset temperature is reached.

[0037] This invention employs a pressure-sensing mattress with an adjustment display area on one side. Users can input corresponding touch signals through the display component to control the pressure-adjustable mattress to perform specific actions, or choose to control it autonomously to achieve the desired functions. The main control device receives the corresponding signals from the pressure adjustment device and feeds them back to the display component, allowing users to understand the current operating status of the pressure-adjustable mattress. The pressure adjustment device adjusts its own volume based on pressure detection. Multiple pressure adjustment devices are positioned at the limiting chamber, creating a curved surface with partially concave and partially convex areas, allowing for better body conformation to the mattress and achieving adaptive zero-pressure mattress control for a better sleep experience. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of an embodiment of a pressure-adjustable mattress according to the present invention;

[0040] Figure 2 This is a schematic diagram of another embodiment of a pressure-adjustable mattress according to the present invention;

[0041] Figure 3 This is a schematic diagram of the pressure detection circuit of the present invention;

[0042] Figure 4 This is a schematic diagram of the temperature detection circuit of the present invention;

[0043] Figure 5 This is a schematic diagram of the structure of an embodiment of the pressure detection device of the present invention;

[0044] Figure 6 This is a schematic diagram of yet another embodiment of a pressure-adjustable mattress according to the present invention;

[0045] Figure 7 This is a schematic diagram of another embodiment of a pressure-adjustable mattress according to the present invention;

[0046] Figure 8 This is a flowchart illustrating the steps of a pressure-adjustable mattress control method according to the present invention.

[0047] Figure 9 This is a flowchart illustrating the steps of another control method for a pressure-adjustable mattress according to the present invention.

[0048] Explanation of icon numbers:

[0049]

[0050]

[0051] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0053] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0054] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0055] Currently, springs are commonly used as a support structure inside beds and mattresses. However, the number of springs is limited and they are not evenly or densely distributed. When someone lies on the bed, the deformation of the surface cannot properly match the human body, resulting in insufficient comfort. Furthermore, springs have the drawback of low durability; their elasticity decreases significantly after a period of use, greatly diminishing the user experience. They also cannot conform to the curves of the human body according to the different pressures exerted by different parts of the body, failing to provide a good sleep experience.

[0056] Therefore, refer to Figure 1This invention proposes a pressure-adjustable mattress, wherein one side of the pressure-adjustable mattress has an adjustment display area, and the pressure-adjustable mattress includes:

[0057] Main control unit A10;

[0058] Pressure regulating device A20, the input end of which is connected to the output end of main control device A10; there are multiple pressure regulating devices A20, and each pressure regulating device A20 can adjust its own size according to the main control signal output by the main control device and / or autonomously change its own size according to the received pressure;

[0059] The limiting chamber A30 is disposed inside the mattress and is used to fix the pressure adjustment device;

[0060] Display component A40, the input terminal of which is connected to the output terminal of the main control device A10, displays relevant information according to the display signal output by the main control device A10.

[0061] In this embodiment, the main control device A10 can be implemented using a main controller, such as an MCU (Microcontroller Unit), DSP (Digital Signal Processor), FPGA (Field Programmable Gate Array), or SOC (System On Chip).

[0062] Optionally, the pressure regulating device A20 can be an adjustable-size airbag B20, water bladder, or other similar device. The pressure regulating device A20 can adjust its own size, such as the expansion or contraction range, according to the control signal output by the main control device. Furthermore, the pressure regulating device A20 can also autonomously change its size based on the received pressure, achieving adaptive adjustment. Specifically, the pressure regulating device A20 is located inside the pressure-adjustable mattress on the side that contacts the user. An elastic spacer layer is provided between the pressure regulating device A20 and the user within the pressure-adjustable mattress to prevent direct contact between the pressure regulating device A20 and the user. The pressure-sensing side of the pressure regulating device A20 is adjacent to the spacer layer to accurately detect the pressure applied by the user to the pressure-adjustable mattress. When a user lies on the pressure-adjustable mattress, the pressure detection circuit B40 in the pressure adjustment device A20 will detect the received pressure and control its own volume to shrink according to the preset pressure threshold, so that the mattress has a curved surface with some areas concave and some areas convex, so that the human body can better conform to the mattress, thereby realizing the construction of a zero-gravity mattress and improving the user's sleep quality.

[0063] In this embodiment, the display component A40 can be a combination of a digital display component, a function display component, and a touch component. Users can use the display component A40 to understand the current working mode and status of the pressure-adjustable mattress. For example, a temperature detection circuit B50 is provided in the pressure adjustment device. The temperature detection signal fed back by the temperature detection circuit B50 is input to the main control device A10. The main control device A10 identifies the temperature detection signal and outputs a display signal to the display component A40. If the current detected temperature is 15℃, the display component A40 will display that the current pressure-adjustable mattress is at 15℃. Users can then select whether to activate the heating mode or the constant temperature mode based on the displayed temperature value.

[0064] Optionally, a medical health mode can be set in the main control device A10 according to actual needs. This medical health mode can be divided into neck medical health settings, lumbar medical health settings, etc. Specifically, the user can select the desired medical health mode and adjust its corresponding parameters via the touch device and display component A40. The main control device A10 controls the protrusion and depression of the pressure adjustment device by receiving the corresponding touch signals. For example, if the user selects the neck medical health setting and sets the protrusion to a low level, the main control device A10 will control the protrusion of the pressure adjustment device in the corresponding area to meet the needs of users with protruding bones or other discomfort. Furthermore, a massage mode can also be set in the main control device A10. For example, in the lumbar massage mode, when the user lies on the pressure-adjustable mattress, the main control device A10 will determine which area of ​​the user's lumbar region is located by using the pressure value obtained from the pressure detection circuit B40 in the pressure adjustment device A20, and then output a main control signal to the control circuit B10 in the pressure adjustment device A20 for that region. By controlling the working mode of the pressure pump B30 in the pressure regulating device A20, the reciprocating work of inflation and deflation is realized, thereby causing the airbag B20 to expand and contract, thus realizing the function of waist massage.

[0065] Optionally, for more convenient control, the pressure-adjustable mattress can also be equipped with a communication module. Control commands can be issued to the pressure-adjustable mattress via the communication module through an external terminal or portable control device such as a remote control. The pressure-adjustable mattress receives the control commands through the communication module and transmits them to the main control device A10. The main control device A10 executes the corresponding actions based on the communication signals transmitted by the communication module. By combining the communication module with an external terminal, the pressure-adjustable mattress can be further made more intelligent and convenient.

[0066] In this embodiment, the user can input corresponding touch signals to the main control device A10 via the touch display component A40. The main control device A10 will execute the corresponding function action according to the input touch signal to control the pressure-adjustable mattress to achieve the corresponding function. The main control device A10 can output corresponding signals input from the pressure adjustment device A20 to the display component A40, allowing the user to more intuitively understand the current operating status of the pressure-adjustable mattress. The user can select the pressure-adjustable mattress adaptive mode, allowing the pressure adjustment device to automatically change its size. Furthermore, the user can also input touch signals to the main control device A10 via the touch component A50 to achieve user-defined adjustments. The pressure-adjustable mattress can adjust its own volume through multiple pressure adjustment devices A20 located in the limiting chamber A30, creating a curved surface with partially concave and partially convex areas on the side of the mattress that contacts the body, thus allowing the body to better conform to the mattress and providing the user with a better sleep experience.

[0067] refer to Figure 2 , Figure 3 and Figure 7 In one embodiment of the present invention, the pressure regulating device includes:

[0068] Control circuit B10, the input terminal of which is connected to the output terminal of main control device A10, and the control circuit B10 can perform corresponding actions according to the main control signal output by main control device A10;

[0069] Airbag B20, wherein an opening is provided on one side of the airbag;

[0070] A pressure detection circuit B40 is disposed on the side of the airbag B20 facing away from the opening. The output terminal of the pressure detection circuit B40 is connected to the input terminal of the control circuit B10 and outputs a pressure detection signal to the control circuit B10.

[0071] Pressure pump B30 is disposed on one side of the opening of airbag B20. The controlled end of pressure pump B30 is connected to the output end of control circuit B10 and opens / closes according to the control signal output by control circuit B10. When pressure pump B30 is in the closed state, airbag B20 is in the sealed state.

[0072] In this embodiment, the control circuit B10 can be implemented using a controller such as an MCU or DSP. The pressure-adjustable mattress contains multiple pressure adjustment devices, which in turn also include multiple control circuits B10. The control circuit B10 is electrically connected to the main control device A10 in the pressure-adjustable mattress, both feeding back relevant detection and control information and receiving the main control signal output by the main control device A10, and executing corresponding control actions. Through the unified control of the multiple control circuits B10 by the main control device A10, the multiple pressure adjustment devices A20 can cooperate with each other.

[0073] Optionally, the airbag B20 is an elastic structure whose volume can expand or contract. The airbag B20 can have an opening on one side to house a pressure pump B30, controlling the flow of gas or liquid into and out of the airbag B20, thus achieving the expansion or contraction of the airbag B20's volume. Furthermore, the shape of the airbag B20 can be a sphere, ellipsoid, polygon, etc., which can be selected according to actual needs. Specifically, taking a cuboid airbag B20 as an example, the cuboid airbag B20 has an opening on one of its length and width sides for mounting the pressure pump B30. The opening degree of the regulating valve in the pressure pump B30 is controlled by the control circuit B10, thereby controlling the rate of gas discharge or input into the airbag B20, and thus controlling the volume change of the airbag B20.

[0074] In this embodiment, the pressure detection circuit B40 can be composed of pressure sensors, such as resistance strain gauge pressure sensors, semiconductor strain gauge pressure sensors, piezoresistive pressure sensors, inductive pressure sensors, capacitive pressure sensors, resonant pressure sensors, etc. The pressure detection circuit B40 is located on the side of the airbag B20 facing away from the opening for more accurate pressure detection. The output terminal of the pressure detection circuit B40 is connected to the input terminal of the control circuit B10, and continuously outputs a pressure detection signal to the control circuit B10. The control circuit B10 has multiple preset pressure thresholds. It compares the pressure detection signal output by the pressure detection circuit B40 with these multiple pressure thresholds to determine the appropriate control action. The pressure detection circuit B40 specifically includes a first strain gauge resistor RV1, a second strain gauge resistor RV2, a third strain gauge resistor RV3, a fourth strain gauge resistor RV4, a first resistor R1, a second resistor R2, a third resistor R3, an operational amplifier OP, a first capacitor C1, and a second capacitor C2. The first terminals of the first strain gauge resistor RV1 and the second strain gauge resistor RV2 are connected to the power supply terminal. The second terminal of the first strain gauge resistor RV1 and the first terminal of the fourth strain gauge resistor RV4 are connected to the first terminal of the first resistor R1. The second terminals of the second strain gauge resistor RV1 and the first terminal of the third strain gauge resistor RV3 are connected to the first terminal of the second resistor R2. The second terminals of the third strain gauge resistor RV3 and the fourth strain gauge resistor RV4 are connected to the power supply terminal. The circuit consists of four interconnected components: a ground terminal; a second terminal of the first resistor R1 connected to the inverting input of the operational amplifier OP; a second terminal of the second resistor R2 connected to the non-inverting input of the operational amplifier OP; a first terminal of the third resistor R3 connected to the inverting input of the operational amplifier OP, and a second terminal of the third resistor R3 connected to the output of the operational amplifier OP; the output of the operational amplifier OP connected to the input of the control circuit B10; a first terminal of the first capacitor C1 connected to the first terminal of the second resistor R2, and a second terminal of the first capacitor C1 connected to the ground terminal; a first terminal of the second capacitor C2 connected to the first terminal of the third resistor R3, and a second terminal of the second capacitor C2 connected to the second terminal of the third resistor R3. The first strain gauge resistor RV1, the second strain gauge resistor RV2, the third strain gauge resistor RV3, and the fourth strain gauge resistor RV4 together constitute the pressure sensing circuit.

[0075] Specifically, a pressure detection circuit typically includes an elastic "arm" that deforms under pressure or force. The bridge circuit includes a fixed resistor RV1, an elastic resistor (strain gauge inside the sensor) RV2 affected by deformation, and two other resistors RV3 and RV4. When external pressure is applied, the strain gauge deforms, causing a change in the value of RV2, resulting in an unbalanced bridge circuit. In this state, the current through the bridge changes, and the magnitude of the change is proportional to the pressure. The pressure signal is reflected in the four ceramic strain gauge resistors, whose resistance changes with the differential pressure, causing bridge imbalance. This bridge imbalance causes a change in current, which is amplified by the operational amplifier OP and output to the control circuit B10. Furthermore, the first resistor R1 and the third resistor R3 are feedback resistors used to adjust the amplification factor. The first capacitor C1, the second capacitor C2, and the resistors form a filter compensation circuit. To more accurately detect pressure changes, the pressure detection circuit typically requires a precise power supply and output circuitry. The power supply circuit can provide sufficient power through a stable voltage or current, thereby ensuring the accurate operation of the voltage detection circuit. The output circuit needs to convert the electrical signal detected by the voltage detection circuit into a digital signal or voltage signal for further processing and reading.

[0076] In this embodiment, the pressure pump B30 can be a miniature pressure pump B30 to ensure the miniaturization and large quantity requirements of the pressure regulating device. The pressure pump B30 can be selected as a water pump or an air pump according to actual needs. The pressure pump B30 is located on the opening side of the airbag B20, opposite to the pressure detection circuit B40, to facilitate its operation. Specifically, when the pressure detected by the pressure detection circuit B40 is 0, the control circuit B10 controls the pressure pump B30 to be in the open state, and controls the opening degree and opening time of the pressure pump B30 valve, so that the volume of the airbag B20 is 100%; when the pressure detected by the pressure detection circuit B40 is 600 Pascals, the control circuit B10 controls the pressure pump B30 to be open, reducing the volume of the airbag B20 to 90% of its original volume; when the pressure detected by the pressure detection circuit B40 is 600 Pascals, the control circuit B10 controls the pressure pump B30 to be open, reducing the volume of the airbag B20 to 90% of its original volume; when the pressure detected by the pressure detection circuit B40 is 0 ... When the pressure value reaches 1200 Pascals, control circuit B10 activates pressure pump B30, reducing the volume of airbag B20 to 80% of its original size. When the pressure value detected by pressure detection circuit B40 reaches 1500 Pascals, control circuit B10 activates pressure pump B30 again, reducing the volume of airbag B20 to 75% of its original size. When the pressure value detected by pressure detection circuit B40 exceeds 1500 Pascals, the volume of airbag B20 will no longer shrink. When the pressure value detected by pressure detection circuit B40 remains constant, control circuit B10 will keep pressure pump B30 in a closed, sealed state to ensure that the volume of airbag B20 remains constant. It can be understood that the higher the pressure on pressure regulating device A20, the smaller the volume of the airbag will be. When the pressure on pressure regulating device A20 exceeds the preset maximum threshold of control circuit B10, the volume of the airbag will remain unchanged. The pressure detection circuit B40 is always in operation to ensure that when the user turns over on the pressure-adjustable mattress, the control circuit B10 can receive the pressure detection signal in time and control the pressure pump B30 to inflate or deflate, so that the volume inside the airbag B20 continuously expands or contracts to adapt to the curvature of the human sleeping posture.

[0077] Furthermore, users can select an adaptive pressure adjustment mode via the display component A40 in the pressure-adjustable mattress. In this mode, the pressure-adjustable mattress will be in autonomous control. Specifically, when the user selects the adaptive adjustment mode, the main control unit A10 will control all the pressure adjustment devices A20 to operate, acquiring the pressure values ​​at various points on the pressure-adjustable mattress through the pressure detection circuit B40 in the pressure adjustment device A20. The control circuit B10 in the pressure adjustment device A20 will automatically control the pressure pump B30 to open based on the pressure values ​​acquired by the pressure detection circuit B40 and the preset pressure thresholds stored in the memory, and control the opening degree and opening time of the valve of the pressure pump B30 through PWM control signals, thereby achieving precise control of the volume of the airbag B20. After the control circuit B10 completes this action, it transmits the received pressure detection signals to the main control unit A10. The main control unit A10 will compare the pressure detection signals fed back by different pressure adjustment devices A20 with the pressure thresholds stored in the memory to determine the user's sleeping position. For example, when a user lies flat on the pressure-adjustable mattress, the main control device A10 determines which pressure adjustment devices A20 the user's head is positioned on based on the pressure detection signals fed back from the different pressure adjustment devices A20. It then automatically controls the volume of the airbags B20 in that area of ​​the pressure adjustment device A20, causing the airbags B20 in that area to inflate to meet the actual needs of the human body. The default inflated volume of the airbags B20 is 120% of their original size. Users can also manually select the degree of head inflation via the display component A40 to meet the diverse needs of different individuals.

[0078] In this embodiment, the pressure regulating device A20 obtains the pressure value received by the pressure detection circuit B40 on the side of the airbag B20 facing away from the opening. The pressure detection circuit B40 inputs the detected pressure value to the control circuit B10. The control circuit B10 compares the pressure detection signal with a preset pressure threshold, thereby controlling the pressure pump B30 to perform a corresponding action, reducing the volume of the airbag B20. Furthermore, when the pressure value detected by the pressure detection circuit B40 is 0, the control circuit B10 controls the pressure pump B30 to start inflation, inputting gas into the airbag and restoring its volume to 100%, allowing for timely adjustment when pressure is received again. This gas inflation method reduces the load on the pressure pump B30 required for the pressure regulating device A20. Through the above process, the pressure regulating device achieves adaptive volume reduction.

[0079] In one embodiment of the present invention, the pressure detection circuit further includes a pressure sensor, which is disposed at the opening of the airbag, and the output terminal of the pressure sensor is electrically connected to the input of the control circuit; the pressure sensor is used to detect the air pressure inside the airbag and output a pressure detection signal to the control circuit.

[0080] Optionally, to enable the pressure regulating device A20 to detect the applied pressure, a pressure sensor can be used in addition to the pressure detection circuit B40. The pressure sensor can be based on the piezoelectric effect or the capacitance effect. Specifically, the piezoelectric material used in the pressure sensor exhibits the piezoelectric effect, meaning it generates an electric charge under mechanical force. When the pressure sensor is subjected to external air pressure, its sensing element (usually rod-shaped) deforms, causing a change in the electrostatic charge distribution within the piezoelectric material. This charge change is transmitted to a computer or other receiving device through the sensor's circuitry, thereby measuring the change in air pressure. Capacitive pressure sensors, on the other hand, use the capacitance effect to measure changes in air pressure. The sensing element in the sensor typically consists of two electrodes forming a capacitor. When the air pressure changes, the spacing between the capacitors or the dielectric constant of the dielectric changes, thus altering the capacitance value. The circuitry in the sensor determines the change in air pressure by measuring the change in capacitance. Furthermore, a pressure sensor can be installed at the airbag opening. By using the pressure sensor to detect the air pressure in airbag B20 in real time, the pressure information in airbag B20 is collected and transmitted to the control circuit B10, enabling the pressure regulating device A20 to detect the pressure it receives. For example, when a user lies on the pressure-adjustable mattress or moves around on it, the air pressure in airbag B20 of the pressure regulating device A20 will change. This change will be detected by the pressure sensor and fed back to the control circuit B10. The control circuit B10 then controls the pressure pump B30 to adjust the gas volume inside the airbag based on the preset air pressure value and the received air pressure detection signal, thereby achieving adaptive zero-pressure adjustment.

[0081] In one embodiment of the present invention, the pressure pump B30 includes:

[0082] An air pump, the controlled end of which is connected to the output end of the control circuit B10, the air pump is opened / closed according to the control signal output by the control circuit B10, so that gas enters / exits the airbag B20 through the air pump;

[0083] A gas filtration device is provided at the gas input port of the gas pump to isolate impurities other than air.

[0084] In this embodiment, the pressure pump B30 can be an air pump, meaning the airbag B20 is used as a gas-containing structure. Its operating principle is the same as that of the pressure pump B30, so it will not be described in detail. Furthermore, when the pressure regulating device uses an air pump as the pressure pump B30, the external gas environment needs to be considered. For example, dust and other impurities will enter the airbag B20 under the action of the air pump. When the impurities in the airbag B20 reach a certain level, they will affect the deformation process of the airbag B20 and further reduce the power consumption required for the pressure pump B30 to operate. Therefore, when selecting an air pump as the pressure pump B30, other filtering devices need to be installed at the gas input port of the air pump. These gas filtering devices can be implemented using filter elements or other filtering structures.

[0085] Optionally, pressure pump B30 can be a water pump, i.e., using a liquid-containing structure such as a water bladder. Its operating principle is the same as pressure pump B30, so it will not be elaborated further. Furthermore, when the pressure regulating device uses a water pump as pressure pump B30, the source of the pumped liquid needs to be considered. Therefore, when the pressure regulating device uses a water pump as pressure pump B30, a water storage tank needs to be installed. The structure of the water storage tank can be a stretchable elastic structure such as a water bladder, or a non-stretchable rigid structure to achieve the water storage effect. The volume of the water storage tank should be greater than or equal to the volume of the water bladder to ensure that the water bladder is sufficiently filled with liquid under the action of the water pump.

[0086] refer to Figure 2 , Figure 4 and Figure 5 In one embodiment of the present invention, the pressure regulating device further includes a temperature detection circuit B50, which is disposed on the side of the airbag B20 facing away from the opening. The output terminal of the temperature detection circuit B50 is connected to the input terminal of the control circuit B10 and outputs a temperature detection signal to the control circuit B10.

[0087] In this embodiment, optionally, the temperature detection circuit B50 can be implemented using a detection circuit based on a thermistor, such as a resistor voltage divider circuit based on an NTC resistor or an NTC probe, or a resistor voltage divider circuit based on a PTC resistor or a PTC probe. Optionally, the temperature detection circuit B50 can also be implemented using a temperature sensor, such as an infrared temperature sensor or a thermocouple temperature sensor. Multiple temperature detection circuits B50 can be used, and these circuits can be evenly distributed at different positions on the side of the airbag B20 facing away from the opening. The control circuit B10 can determine multiple temperature values ​​based on the multiple temperature detection signals and calculate the actual ambient temperature using a preset temperature algorithm, such as averaging or weighted calculation, thereby improving the accuracy of detecting the ambient temperature of the pressure regulating device.

[0088] With the above settings, this application enables the pressure regulating device to power on or off the temperature regulating circuit in the pressure regulating device according to the temperature control, further improving the intelligence of the pressure regulating device, meeting different user needs, and enhancing the user experience.

[0089] In one embodiment, the temperature detection circuit B50 includes a thermistor RT, a fourth resistor R4, and a third capacitor C3; the first end of the fourth resistor R4 is electrically connected to a first power supply terminal, and the second end of the fourth resistor R4, the first end of the thermistor RT, and the first end of the third capacitor C3 are respectively electrically connected to the control circuit B10; the second end of the third capacitor C3 and the second end of the thermistor RT are grounded.

[0090] The thermistor RT can be a PTC (Positive Temperature Coefficient), an NTC (Negative Temperature Coefficient), or a CTR (Critical Temperature Resistor). The fourth resistor R4 is a fixed-value resistor. The voltage connected to the first power supply terminal is a fixed first voltage value, which can be obtained by voltage conversion of the supply voltage by the voltage conversion circuit inside the pressure regulating mattress. The resistance of the thermistor RT changes with temperature. During operation, the thermistor RT and the fourth resistor R4 divide the first voltage according to their resistance ratio, outputting a corresponding voltage signal (temperature detection signal) to the control circuit B10. The ADC module in control circuit B10 acquires this voltage signal and determines its value. Then, based on this voltage value, the known first voltage value, and the resistance of the fourth resistor R4, control circuit B10 calculates the resistance of the thermistor RT. Using a preset resistance-temperature mapping table, it determines the temperature corresponding to the current resistance of the thermistor RT and uses this as the ambient temperature. The detected temperature signal is transmitted to control circuit B10 via temperature detection circuit B50. This allows the temperature to be displayed on display component A40 and also provides information on the operating temperature of the pressure regulator, enabling control circuit B10 to perform relevant actions.

[0091] Optionally, in one embodiment, the control circuit B10 in the pressure regulating device A20 can control the temperature regulating device B60 to be in an on or off state according to the temperature value obtained from the temperature detection signal and a preset control logic, thereby energizing or de-energizing the temperature regulating device B60 in practical applications. For example, during the research and development process, the developers may pre-set a preset alarm temperature in the control circuit B10. If a circuit module in the current temperature regulating device B60 malfunctions and causes overheating, the ambient temperature will rise and exceed the preset alarm temperature. Thus, during actual operation, when the control circuit B10 determines from the temperature detection signal that the ambient temperature has reached the preset alarm temperature, it confirms that the current pressure regulating device A20 has malfunctioned and is overheating, and will control the temperature regulating device B60 to be in a off state, thereby de-energizing the temperature regulating device B60 and effectively ensuring the safety of the pressure regulating device A20. Furthermore, users can also set the opening temperature of the pressure regulating mattress, which is lower than the preset alarm temperature, through an app on a handheld terminal. When the communication module receives a signal representing the activation temperature from the handheld terminal, it outputs it to the control circuit B10. The control circuit B10 then sets the activation temperature accordingly based on this signal. Furthermore, when the ambient temperature is determined to have reached or fallen below the activation temperature based on the temperature detection signal (which can be set by the user), the temperature regulating device B60 is activated. These settings effectively meet different user needs and improve the user experience.

[0092] refer to Figure 5 and Figure 6 In one embodiment of the present invention, the airbag B20 has a detection area on the side opposite to the opening, and the detection area is a rectangular detection area.

[0093] Among them, a pressure detection circuit B40 is provided near the inner top corner and center of the rectangular detection area; a temperature detection circuit B50 is provided near the inner perimeter of the rectangular detection area.

[0094] In this embodiment, to ensure the accuracy of pressure and temperature detection by the pressure detection device A20 in the pressure-adjustable mattress, a detection area is provided on the side of the airbag B20 facing away from the opening, i.e., the side indirectly in contact with the human body. Specifically, five sets of pressure detection circuits B40 and four sets of temperature detection circuits B50 are arranged in this detection area to prevent uneven pressure and temperature detection. Furthermore, by setting multiple sets of pressure detection circuits B40 and temperature detection circuits B50, it is possible to avoid the inability to obtain pressure and temperature detection signals due to the failure of individual detection circuits, thus preventing changes in the volume and temperature of the airbag B20. This arrangement effectively acquires pressure and temperature detection signals, allowing the control circuit B10 to perform fault self-checking and result verification by acquiring multiple sets of pressure and temperature detection signals. Accurate acquisition of the detection signal sources enables more precise control.

[0095] refer to Figure 2 In one embodiment of the present invention, the pressure regulating device further includes a temperature regulating circuit, which is disposed on the side of the airbag B20 facing away from the opening. The input terminal of the temperature regulating circuit is connected to the output terminal of the control circuit B10, and the temperature of the temperature regulating circuit is increased according to the temperature regulating control signal output by the control circuit B10.

[0096] In this embodiment, the temperature regulation circuit can be implemented using a heating element or similar temperature regulation circuit. The temperature regulation circuit is located on the side of the airbag B20 facing away from the opening, i.e., on the same side as the pressure detection circuit B40. The temperature regulation circuit can be set to automatic temperature regulation mode and manual temperature regulation mode according to actual needs. The input terminal of the temperature regulation circuit is connected to the output terminal of the control circuit B10. The control circuit B10 controls the opening / closing of the temperature regulation circuit based on the temperature detection signal detected by the temperature detection circuit B50. Specifically, in the automatic temperature regulation mode, multiple temperature thresholds are set in the control circuit B10. When the temperature detection signal indicates that the current temperature is lower than the set temperature threshold, the control circuit B10 controls the temperature regulation circuit to heat up until the temperature detection signal fed back by the temperature detection circuit B50 reaches the temperature threshold, at which point heating stops. In the manual temperature regulation mode, the user needs to manually select the desired temperature level using the corresponding touch component A50. The touch signal output by the touch component A50 is received by the control circuit B10, which then controls the temperature regulation circuit to adjust the temperature to the corresponding level. The temperature detection signal fed back by the temperature detection circuit B50 is used by the control circuit B10 to turn the temperature regulation circuit on / off.

[0097] The present invention also proposes a control method for a pressure-adjustable mattress, comprising the following steps;

[0098] S100, the main control device A10 in the pressure-adjustable mattress obtains the current touch signal and controls the switch circuit A60 to close;

[0099] S200, the pressure regulating device obtains the pressure detection signal through the pressure detection circuit B40 and transmits it to the control circuit B10;

[0100] S300, control circuit B10 controls the opening amplitude and time of pressure pump B30 in pressure regulating device according to pressure detection signal;

[0101] S400, the opening time of pressure pump B30 reaches the preset time of control circuit B10 based on the current pressure detection signal;

[0102] S500, control circuit B10 controls pressure pump B30 to shut down according to a preset time;

[0103] S600: When the control circuit receives a pressure detection signal that reaches a preset value, it controls the opening amplitude and time of the pressure pump.

[0104] The opening times of S700 and pressure pump B30 reach the same preset time;

[0105] S800, control circuit B10 controls pressure pump B30 to close according to preset time.

[0106] In this embodiment, when the user triggers the pressure-adjustable mattress via the touch component A50, the main control device A10 receives the touch signal and recognizes the activation. When the user lies on the mattress, pressure detection circuits B40 in different areas acquire different pressure detection signals and feed them back to the control circuit B10 in the corresponding pressure adjustment device. The control circuit B10 outputs a control signal to the pressure pump B30 according to a preset pressure threshold based on the acquired pressure adjustment signal. The pressure pump B30 controls the opening amplitude and time of the regulating valve according to the input control signal, thereby expelling gas / liquid from the airbag B20, resulting in a mattress with a concave-convex structure conforming to the human body's pressure curve. The clock circuit in the control circuit B10 of each pressure adjustment device ensures that the opening time of the pressure pump B30 reaches a preset time, thus guaranteeing that the airbag B20 in the pressure adjustment device shrinks to a preset volume. When the user leaves the mattress, the pressure detection signal detected by the pressure detection circuit B40 reaches the preset value. At this time, the control circuit B10 in the different pressure regulating devices will open the pressure pump B30 in the pressure regulating device. The opening range and time are consistent with the previous opening, so as to restore the airbag B20 to the full state for subsequent use.

[0107] Optionally, after the main control device A10 in the pressure-adjustable mattress acquires the current touch signal and controls the switch circuit A60 to close, the following steps are also included:

[0108] S110, The pressure regulating device obtains the temperature detection signal through the temperature detection circuit B50 and transmits it to the control circuit B10;

[0109] S120, the control circuit B10 controls the temperature regulation circuit in the temperature regulation device B60 to raise the temperature according to the temperature detection signal;

[0110] S130, control circuit B10 obtains temperature detection signal through temperature detection circuit B50;

[0111] S140 and control circuit B10 identify the temperature based on the temperature detection signal and control the temperature modulation device to stop heating when the preset temperature is reached.

[0112] In this embodiment, when the user triggers the pressure-adjustable mattress via the touch component A50, the main control device A10 receives the touch signal and recognizes the activation, thereby controlling the control circuits of different areas to perform corresponding actions. The pressure-adjusting devices in different areas acquire temperature detection signals for their respective areas via their temperature detection circuits B50 and transmit them to their control circuits B10. The pressure-adjusting devices in different areas control the temperature-adjusting device B60 to raise the temperature in that area based on the temperature detection signals received by their control circuits B10. During this period, the temperature detection circuits B50 in the pressure-adjusting devices in different areas will be continuously operating, constantly outputting temperature detection signals to the control circuit B10 until the temperature of the pressure-adjusting device reaches the set temperature threshold, at which point the control circuit B10 controls the temperature modulation device to stop raising the temperature.

[0113] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A pressure-adjustable mattress, characterized in that, The pressure-adjustable mattress has an adjustment display area on one side, and the pressure-adjustable mattress includes: Main control device; A pressure regulating device, wherein the input end of the pressure regulating device is connected to the output end of the main control device; there are multiple pressure regulating devices, and the pressure regulating devices can adjust their own volume according to the main control signal output by the main control device and / or autonomously change their own volume according to the received pressure. A positioning chamber, located inside the mattress, is used to fix the pressure adjustment device. The display component has its input end connected to the output end of the main control device, and displays relevant information according to the display signal output by the main control device.

2. The pressure-adjustable mattress as described in claim 1, characterized in that, The pressure regulating device includes: A control circuit, the input terminal of which is connected to the output terminal of the main control device, and the control circuit can perform corresponding actions according to the main control signal output by the main control device; An airbag, wherein an opening is provided on one side; A pressure detection circuit is provided, which is located on the side of the airbag facing away from the opening. The output terminal of the pressure detection circuit is connected to the input terminal of the control circuit and outputs a pressure detection signal to the control circuit. A pressure pump is disposed on one side of the airbag opening. The controlled end of the pressure pump is connected to the output end of the control circuit and opens / closes according to the control signal output by the control circuit. When the pressure pump is in the closed state, the airbag is in a sealed state. The pressure detection circuit includes a first strain gauge resistor, a second strain gauge resistor, a third strain gauge resistor, a fourth strain gauge resistor, a first resistor, a second resistor, a third resistor, an operational amplifier, a first capacitor, and a second capacitor. The first ends of the first and second strain gauge resistors are connected to a power supply terminal. The second ends of the first and fourth strain gauge resistors are connected to the first ends of the first resistor. The second ends of the second and third strain gauge resistors are connected to the first ends of the second resistor. The second ends of the third and fourth strain gauge resistors are connected to a ground terminal. The second end of the first resistor is connected to the inverting input terminal of the operational amplifier. The second end of the second resistor is connected to the non-inverting input terminal of the operational amplifier. The first end of the third resistor is connected to the inverting input terminal of the operational amplifier, and the second end of the third resistor is connected to the output terminal of the operational amplifier. The output terminal of the operational amplifier is connected to the input terminal of the control circuit. The first end of the first capacitor is connected to the first end of the second resistor, and the second end of the first capacitor is connected to the ground terminal. The first end of the second capacitor is connected to the first end of the third resistor, and the second end of the second capacitor is connected to the second end of the third resistor.

3. The pressure-adjustable mattress as described in claim 2, characterized in that, The pressure detection circuit also includes a pressure sensor, which is located at the airbag opening. The output of the pressure sensor is electrically connected to the input of the control circuit. The pressure sensor is used to detect the air pressure inside the airbag and output a pressure detection signal to the control circuit.

4. The pressure-adjustable mattress as described in claim 2, characterized in that, The pressure pump includes: An air pump, the controlled end of which is connected to the output end of the control circuit, the air pump being opened / closed according to the control signal output by the control circuit, so that gas enters / exits the airbag through the air pump; A gas filtration device is provided at the gas input port of the gas pump to isolate impurities other than air.

5. The pressure-adjustable mattress as described in claim 2, characterized in that, The pressure regulating device also includes a temperature detection circuit, which is located on the side of the airbag facing away from the opening. The output terminal of the temperature detection circuit is connected to the input terminal of the control circuit and outputs a temperature detection signal to the control circuit.

6. The pressure-adjustable mattress as described in claim 5, characterized in that, The airbag has a detection area on the side facing away from the opening, and the detection area is a rectangular detection area. Pressure detection circuits are located near the top corner and center of the rectangular detection area; temperature detection circuits are located around the perimeter of the rectangular detection area.

7. The pressure-adjustable mattress as described in claim 5, characterized in that, The pressure regulating device also includes a temperature regulating circuit, which is located on the side of the airbag facing away from the opening. The input terminal of the temperature regulating circuit is connected to the output terminal of the control circuit, and the temperature of the temperature regulating circuit is increased according to the temperature regulating control signal output by the control circuit.

8. A method for controlling a pressure-adjustable mattress, characterized in that, Includes the following steps: The main control unit in the pressure-adjustable mattress receives the current touch signal and controls the switching circuit to close. The pressure regulating device acquires the pressure detection signal through the pressure detection circuit and transmits it to the control circuit; The control circuit controls the opening amplitude and duration of the pressure pump in the pressure regulating device based on the pressure detection signal. The pressure pump opens at a time that is preset by the control circuit based on the current pressure detection signal. The control circuit shuts down the pressure pump according to a preset time. When the control circuit receives a pressure detection signal that reaches a preset value, it controls the opening amplitude and duration of the pressure pump. The pressure pump opens at the same preset time. The control circuit controls the pressure pump to close according to a preset time.

9. The control method for the pressure-adjustable mattress as described in claim 7, characterized in that, After the main control device in the pressure-adjustable mattress acquires the current touch signal and controls the switch circuit to close, the following steps are also included: The pressure regulating device acquires the temperature detection signal through the temperature detection circuit and transmits it to the control circuit. The control circuit controls the temperature regulation circuit in the temperature regulation device to raise the temperature based on the temperature detection signal; The control circuit acquires the temperature detection signal through the temperature detection circuit; The control circuit identifies the temperature based on the temperature detection signal and controls the temperature modulation device to stop heating when the preset temperature is reached.

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