CN117959103A - Multi-posture bedsore prevention mattress control system and method - Google Patents

Abstract

The application relates to a mattress control system and a mattress control method for preventing bedsores in multiple postures, which are applied to the technical field of bedsore protection and comprise the following steps: aiming at the prevention of bedsores under different back lifting angles, the application designs the rotatable air bag supporting plate with the angle sensor, and judges the back lifting height of the human body according to the data fed back by the angle sensor so as to realize the prevention of bedsores under different back lifting angles; aiming at the control of the local pressure of the human body, a method of integrally packaging the air bag number and the pressure value data is adopted, the mapping relation between the human body pressure and the air bag is established, and the control of the local pressure of the human body is realized; the pressure data is processed by adopting a difference algorithm, so that whether a local high-pressure area exists in the human body is judged, the accurate prevention of bedsores is realized, and the occurrence risk of the bedsores is reduced.

Description

Multi-posture bedsore prevention mattress control system and method

Technical Field

The invention relates to the technical field of bedsore protection, in particular to a multi-posture bedsore prevention mattress control system and method.

Background

There are many influencing factors of bedsores, the main factors of which are pressure, including vertical pressure, friction and shear force, and studies have shown that capillary pressure exceeds 32mmhg and lasts for 2 hours, and the occurrence of bedsores is highly probable. When the human body is in a posture for a long time, the pressure of the skin is increased, so that capillaries are pressed, metabolism is influenced, and bedsores are easy to occur. And the bedsores are different in position under different postures. Generally, in the supine position, bedsores tend to occur at the heel, sacral coccyx, and scapula; bedsores easily occur in buttocks in sitting postures and semi-lying postures.

At present, the bedsore mattress mainly adopts the operation of circularly inflating and deflating the air bag at a timing of 2 hours or other times to redistribute the pressure of a patient to play a certain role in preventing, but the method cannot accurately inflate and deflate key areas where bedsores occur, so that the bedsore protection effect of the method is poor.

Disclosure of Invention

In view of the above, the present invention aims to provide a mattress control system and method for preventing bedsores with multiple postures, so as to solve the problems in the prior art that the air bags are periodically inflated and deflated, high risk areas where bedsores occur cannot be accurately positioned, and the bedsore protection effect is poor.

According to a first aspect of embodiments of the present invention, there is provided a multi-posture bedsore prevention mattress control system, the system comprising:

An airbag support plate: one surface of the air bag supporting plate is also provided with air bag grooves of a honeycomb array;

Airbag layer: the air bag layer consists of a plurality of air bag honeycomb arrays, corresponds to the air bag grooves of the air bag supporting plate one by one, and is fixedly arranged in the air bag grooves of the air bag supporting plate;

Each air bag in the air bag layer is provided with an air inlet and an air outlet, the air inlet and the air outlet are connected with an air pipe, an electromagnetic valve is arranged in the middle of the air pipe, one end of the electromagnetic valve is provided with an air pump, and the on-off of the air pipe is controlled through the electromagnetic valve so as to control the inflation and deflation of the air bag;

A diaphragm pressure sensor: the film pressure sensors are arranged on the air bag layer, are installed in a honeycomb array mode, are in one-to-one correspondence with air bags in the air bag layer and are used for collecting pressure data of each air bag in the air bag layer;

And (3) a controller: the controller is used for receiving the pressure data of the film pressure sensor, calculating whether a local high-pressure area exists in the air bag layer according to a preset difference algorithm, and if so, controlling the corresponding electromagnetic valve and the air pump to deflate the air bag in the local high-pressure area and inflating the air bag around the local high-pressure area.

Preferably, the method comprises the steps of,

The air bag supporting plate comprises a first air bag supporting plate and a second air bag supporting plate, wherein the bottom of the first air bag supporting plate is connected with the top of the second air bag supporting plate through a rotating shaft, so that the first air bag supporting plate can rotate around a rotary shaft within a certain angle;

the length ratio of the first airbag support plate to the second airbag support plate is 1 to 1.5.

Preferably, the method comprises the steps of,

Further comprises:

an angle sensor: the rotating shafts are arranged on the first air bag supporting plate and the second air bag supporting plate and are used for collecting the rotating angle of the first air bag supporting plate and sending the collected rotating angle of the first air bag supporting plate to the controller.

Preferably, the method comprises the steps of,

The bottom of the first airbag supporting plate, which is close to the rotating shaft, is provided with a wedge-shaped waist airbag, and the top of the second airbag supporting plate, which is close to the rotating shaft, is provided with a plurality of strip-shaped hip airbags.

Preferably, the method comprises the steps of,

The controller is also used for receiving the angle data of the angle sensor and controlling the waist air bag and the hip air bag to be inflated and deflated according to the angle data.

According to a second aspect of embodiments of the present invention, there is provided a multi-posture bedsore prevention mattress control method, which is based on a multi-posture bedsore prevention mattress control system as described in any one of the above, the method comprising:

Acquiring pressure data of each air bag in the air bag layer, processing all the pressure data by using an bubbling sequencing algorithm, arranging the pressure data according to a size sequence, calculating an average value of all the pressure data, and recording a maximum value and a minimum value in the pressure data;

Calculating the difference value between the maximum value and the minimum value in the pressure data, and comparing the difference value with the average value to obtain the ratio of the difference value to the average value;

Comparing the ratio with a preset ratio threshold, if the ratio is larger than the preset ratio threshold, a local high-pressure area exists, deflating the air bags in the local high-pressure area, and inflating peripheral air bags adjacent to the local high-pressure area;

And re-acquiring the pressure data of each air bag in the air bag layer, and repeating the steps until the ratio is smaller than or equal to a preset ratio threshold.

Preferably, the method further comprises:

acquiring the rotation angle of the first air bag supporting plate, and when the rotation angle is in a preset first rotation angle interval, performing inflation operation on the waist air bag.

Preferably, the method further comprises:

acquiring the rotation angle of the first airbag support plate, and controlling the plurality of strip-shaped hip airbags to be partially inflated and partially deflated when the rotation angle is in a preset second rotation angle interval;

The state of the plurality of strip-shaped buttock air bags is kept for a preset second time after the inflation and deflation of the plurality of strip-shaped buttock air bags are continuously carried out for a preset first time, then the original inflated air bags are controlled to be deflated, and the original deflated air bags are inflated, and are kept for a preset second time after the preset first time, and the inflation and deflation are sequentially and circularly carried out alternately.

The technical scheme provided by the embodiment of the invention can comprise the following beneficial effects:

according to the application, the airbag supporting plate is provided with the groove for placing the airbag; the integrated air bag layers are placed in the air bag grooves, independent air inflation and deflation operations are carried out on each air bag through independent air channels, the air bags are arranged in an array mode, the pressure of each part of a human body can be considered, the pressure sensors are in the same array mode as the air bags, the pressure value of each air bag point position is independently obtained, whether a local high-pressure area exists in the air bag layers or not is calculated by utilizing a difference algorithm according to the pressure values of all the air bags, the local high-pressure area is a high-risk area where bedsores occur, if the local high-pressure area exists, the corresponding air bags are controlled to carry out pressure reduction operations, and the risk of bedsores is reduced.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is an overall schematic diagram of an airbag mattress shown according to an exemplary embodiment;

FIG. 2 is a schematic diagram illustrating the connection of a membrane pressure sensor and a bladder according to an exemplary embodiment;

FIG. 3 is a schematic illustration of the operation of the air bag mattress in a 30 deg. supine position, shown in accordance with an exemplary embodiment;

FIG. 4 is an overall installation schematic of a bedsore prevention mattress according to an exemplary embodiment;

FIG. 5 is a schematic view of a human spine shown according to an exemplary embodiment;

FIG. 6 is an enlarged schematic view of a lumbar airbag according to an exemplary embodiment;

FIG. 7 is a flow chart illustrating a method of controlling a multi-posture bedsore prevention mattress according to an exemplary embodiment;

In the accompanying drawings: 1-air bag supporting plate, 2-air bag layer, 3-foam pad, 4-buttock air bag, 5-waist air bag and 6-angle sensor.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.

Example 1

FIG. 1 is an overall schematic of an airbag mattress according to an exemplary embodiment, as shown in FIG. 1, the system comprising:

an air bag supporting plate 1, an air bag layer 2 and a cotton pad layer 3;

wherein, the air bags comprise three air bag layers 2 which are integrally formed, a buttock air bag 4 and a waist air bag 5;

All the air bags are provided with air inlets, the air inlets are connected with air pipes, a first electromagnetic valve is arranged in the middle of the air bags to control the on-off of an air path so as to control the air bags to be inflated and deflated, the first electromagnetic valve is connected with an air pump, and the air pump adopts a medical mute air pump; the tail end of the air pipe is opened, a second electromagnetic valve is arranged at the tail end of the air pipe, and the air bag is controlled to exhaust by controlling the switch of the second electromagnetic valve; in short, when the air bag is inflated by the air pump, the first electromagnetic valve and the second electromagnetic valve are simultaneously opened, and the air in the air bag passes through the first electromagnetic valve and is discharged from the tail end of the air pipe through the second electromagnetic valve;

the hip air bag 4 consists of six strip-shaped air bags, is arranged at the top of one side of the second air bag supporting plate, which is close to the rotating shaft, and is used for massaging the hip through cyclic inflation and deflation so as to reduce the risk of sitting bedsores;

The waist airbag 5 consists of a wedge-shaped airbag, accords with the human engineering principle, is arranged at the bottom of one side of the first airbag supporting plate, which is close to the rotating shaft, and is used for supporting the waist of a patient when the patient is in a supine position; the specific shape of the waist airbag 5 is shown in fig. 6;

The air bag supporting plate 1 comprises a first air bag supporting plate and a second air bag supporting plate, the first air bag supporting plate is connected with the second air bag supporting plate through a rotating shaft, the first air bag supporting plate can rotate around the rotating shaft between 0 degrees and 90 degrees, the length ratio of the first air bag supporting plate to the second air bag supporting plate is 1 to 1.5, and the ratio is a national standard testing ratio, namely, when the first air bag supporting plate rotates upwards, the waist and hip stress of a human body is most in accordance with the ergonomics, as shown in figure 3;

the angle sensor 6 is arranged at the rotating shaft and is used for acquiring the rotating angle of the first air bag supporting plate;

The air bag layer 2 is a flexible layer and is arranged between the air bag supporting plate 1 and the cotton cushion layer 3 and fixedly arranged in an air bag groove of the air bag supporting plate 1; the air bag supporting plate 1 changes along with the change of the back lifting angle of the bed body, which can ensure that the air bag layer 2 and the air bag supporting plate 1 have good connection under different back lifting angles;

the film pressure sensor is arranged in an array mode, the mode is the same as the air bag array, accords with the human engineering principle, is adhered to the air bag layer and is used for independently acquiring the pressure data of each air bag in the air bag layer 2, as shown in the figure 2;

the cotton cushion layer 3 is arranged on the air bag layer 2 and is used for enabling a user to obtain better lying experience;

Meanwhile, the application separately controls the electricity and the gas of the control system, two control boxes are arranged as shown in figure 4, the peripheral circuit of the film pressure sensor is connected with the general controller of the electric control box, the collected pressure signal is transmitted to the controller, the gas circuit of the air bag is connected with the electromagnetic valve in the gas control box and is used as a switch of the gas circuit, the switch is selected according to the instruction sent by the controller, and the air bag is inflated and deflated by matching with the medical mute air pump;

The film pressure sensor adopts an array mode which is the same as that of the air bags, can record the number of the air bags, is convenient for the air bags to independently control and locally regulate the pressure of a human body, the film pressure sensor packages the acquired data and transmits the data to the controller through the data transmission module, the controller analyzes the pressure data, the analyzed pressure data corresponds to the number of the air bags one by one, and the controller processes the pressure data according to a difference algorithm to perform bedsore prevention operation;

The difference control algorithm is as follows, all the analyzed pressure data are arranged in order from small to large (or from large to small) through an bubbling sequencing method, the difference value of the maximum pressure and the minimum pressure is calculated, the average value of all the pressure data is calculated, the ratio of the difference value to the average value is calculated, the value is used as a judging standard to judge the threshold value, if the ratio is greater than or equal to the set threshold value, the condition that the pressure distribution of a patient is uneven and the pressure concentration phenomenon exists is indicated, the corresponding operation is executed to redistribute the pressure, the pressure concentration phenomenon is avoided, the maximum pressure born by the patient is reduced, and the risk of bedsore is reduced; if the ratio is smaller than the set threshold, the pressure distribution of the patient is uniform, the pressure concentration phenomenon is avoided, bedsores are avoided, the pressure reduction operation is not needed to be executed, the pressure value is continuously monitored to calculate the average value, the difference value and the ratio, and the previous steps are repeated.

Example two

Fig. 7 is a flow chart illustrating a method of controlling a multi-posture bedsore prevention mattress according to an exemplary embodiment, comprising:

s1, acquiring pressure data of each air bag in the air bag layer, processing all the pressure data by using an bubbling sequencing algorithm, arranging the pressure data according to a size sequence, calculating an average value of all the pressure data, and recording a maximum value and a minimum value in the pressure data;

S2, calculating the difference value between the maximum value and the minimum value in the pressure data, and comparing the difference value with the average value to obtain the ratio of the difference value to the average value;

S3, comparing the ratio with a preset ratio threshold, if the ratio is larger than the preset ratio threshold, a local high-pressure area exists, deflating the air bags in the local high-pressure area, and inflating the peripheral air bags adjacent to the local high-pressure area;

s4, re-acquiring the pressure data of each air bag in the air bag layer, and repeating the steps until the ratio is smaller than or equal to a preset ratio threshold value;

It can be understood that after the film pressure sensor collects the pressure data of the human body, the data are packed and sent to the controller according to a certain sequence, for example, 120 pieces of pressure data, 120 pieces of air bag labels are used, the pressure data can be packed together according to the sequence from 1 to 120, the format of the pressure data packet can be [ xxx1xxx2 xxx3 … … xxx120], wherein xxx represents that the film pressure sensor collects the pressure data, arabic numbers 1,2 and 3 … represent the air bag labels corresponding to the pressure value, after the controller receives the pressure data packet, the pressure data and the air bag labels are resolved, all the pressure data are processed by utilizing an bubbling ordering algorithm, the average value p of all the pressure data is calculated after the pressure data are arranged according to the sequence of the sizes, and the maximum value max1 and the minimum value min1 in the pressure data are recorded, calculating a difference value a between a maximum value and a minimum value, comparing the calculated difference value q with a preset threshold value, wherein the q value is used as a reference parameter, setting the preset threshold value to be 200%, if the ratio is larger than 200%, indicating that the distribution of manpower pressure is uneven, a local high-pressure area exists, and the pressure is possibly decubitus when the local high-pressure area is considered to be in a dangerous state, sending an instruction to an electromagnetic valve by a controller, controlling the electromagnetic valve and a corresponding action of an air pump, carrying out deflation operation on an air bag in the high-pressure area, carrying out inflation operation on the air bag around the high-pressure air bag, recording a pressure value max2 of the high-pressure air bag before the decompression operation, calculating an average value p2 of all the pressure values after the decompression operation, calculating a ratio q2 of max2 and p2 until the q2 is smaller than 1, and continuing to carry out pressure monitoring if q1 is smaller than 1;

It should be emphasized that in the process of pressure monitoring, calculating and pressure adjustment, the waist air bag and the hip air bag do not participate in the calculation process, but only the air bags in the integrally formed air bag layers participate;

the lumbar air bag and the hip air bag participate in the following processes:

further comprises: acquiring the angle of a first air bag supporting plate through an angle sensor, acquiring human pressure data by using an array film pressure sensor when a patient is in a 0-degree supine posture, transmitting the human pressure data to a controller for difference processing, judging a threshold value by using data obtained by a difference algorithm, further carrying out local pressure adjustment, and carrying out array according to an ergonomic principle by using air bags, wherein when the human body is lying on a mattress, because the rotation angle of the first air bag supporting plate is 0, namely the human body is in the supine posture at the moment, the pressure of an air bag corresponding to the shoulder blade of the human body can be increased, and the air bag mark corresponding to the shoulder blade of the human body can be obtained by analyzing the pressure change process of all the air bags; assuming that the balloon number 48-50 corresponds to the scapula of the human body at the moment, when the scapula of the human body receives the maximum pressure, the pressure value transmitted by the balloon number 48-50 is increased, so that q is increased, the balloon number of the maximum pressure value can be determined through a difference algorithm, the balloon number can be used for inflating and deflating a local balloon, the local pressure of the human body in a 0-degree supine posture can be adjusted, and the risk of bedsore is reduced;

Further comprises: when a user is in a 0-30 DEG supine position, according to the human engineering principle, the parts of the human body which are subjected to high pressure are provided with shoulder blades and tail sacrums, the pressure prevention of the parts can be processed according to the difference algorithm and the control logic thereof, as the spine of the human body is provided with radian, as shown in figure 5, the angle sensor can transmit the angle of the first air bag supporting plate rotating along with the bed board to the controller, and the controller can properly inflate the waist air bag 5 according to the angle value, plays a supporting role on the waist, accords with the curve of the spine of the human body and improves the comfort of the patient;

Further comprises: when a user is in a 30-60 DEG supine position, the human body can slide down or has a tendency to slide down on the mattress due to the action of gravity, larger friction force exists in the supine position, skin cutin of the patient is rubbed, pressure tolerance of the patient is reduced, the risk of bedsores is increased, larger shearing force possibly exists at the tail sacrum, the risk of bedsores is increased, the controller processes angle data sent by the angle sensor, when the supine position is in the supine position, the controller can send corresponding instructions, the inflation amount of the lumbar wedge-shaped air bag 5 is increased, an upward supporting reaction force exists due to the fact that the lumbar air bag is wedge-shaped, the supporting reaction force can reduce the vertical pressure contacted by the back of the patient and the mattress to a certain extent, and therefore the friction force born by the back of the patient and the shearing force at the tail sacrum are reduced, and a certain bedsore prevention result is achieved;

Further comprises: when a patient is in a 60-90 DEG supine position, according to the principle of ergonomics, the part of the human body which is subjected to high pressure is buttocks, the controller processes data transmitted by the angle sensor to judge that the back lifting angle is in the interval, the controller sends corresponding instructions to the electromagnetic valve for controlling the buttocks air bag 4, the action of the buttocks air bag 4 is realized by matching with the medical mute air pump, the buttocks air bag has six strip-shaped air bags, three air bags are inflated through the opening and closing of the electromagnetic valve, the three air bags are deflated, the inflation and deflation are carried out for 30 seconds, the state is kept for 2 minutes, the alternate inflation and deflation are carried out for 30 seconds, the state is kept for 2 minutes … … seconds, and the sequential circulation is carried out, so that the occurrence of pressure concentration of buttocks can be avoided, and the occurrence probability of bedsores is avoided.

According to the application, the airbag supporting plate is provided with the groove for placing the airbag; the integrated air bag layers are placed in the air bag grooves, independent air inflation and deflation operations are carried out on each air bag through independent air channels, the air bags are arranged in an array mode, the pressure of each part of a human body can be considered, the pressure sensors are in the same array mode as the air bags, the pressure value of each air bag point position is independently obtained, whether a local high-pressure area exists in the air bag layers or not is calculated by utilizing a difference algorithm according to the pressure values of all the air bags, the local high-pressure area is a high-risk area where bedsores occur, if the local high-pressure area exists, the corresponding air bags are controlled to carry out pressure reduction operations, and the risk of bedsores is reduced.

It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to.

It should be noted that in the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "plurality" means at least two.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.

It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.

Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.

The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims (8)

1. A multi-modal pressure sore prevention mattress control system, the system comprising:

An airbag support plate: one surface of the air bag supporting plate is also provided with air bag grooves of a honeycomb array;

Airbag layer: the air bag layer consists of a plurality of air bag honeycomb arrays, corresponds to the air bag grooves of the air bag supporting plate one by one, and is fixedly arranged in the air bag grooves of the air bag supporting plate;

Each air bag in the air bag layer is provided with an air inlet and an air outlet, the air inlet and the air outlet are connected with an air pipe, an electromagnetic valve is arranged in the middle of the air pipe, one end of the electromagnetic valve is provided with an air pump, and the on-off of the air pipe is controlled through the electromagnetic valve so as to control the inflation and deflation of the air bag;

A diaphragm pressure sensor: the film pressure sensors are arranged on the air bag layer, are installed in a honeycomb array mode, are in one-to-one correspondence with air bags in the air bag layer and are used for collecting pressure data of each air bag in the air bag layer;

And (3) a controller: the controller is used for receiving the pressure data of the film pressure sensor, calculating whether a local high-pressure area exists in the air bag layer according to a preset difference algorithm, and if so, controlling the corresponding electromagnetic valve and the air pump to deflate the air bag in the local high-pressure area and inflating the air bag around the local high-pressure area.

2. The system of claim 1, wherein the system further comprises a controller configured to control the controller,

The air bag supporting plate comprises a first air bag supporting plate and a second air bag supporting plate, wherein the bottom of the first air bag supporting plate is connected with the top of the second air bag supporting plate through a rotating shaft, so that the first air bag supporting plate can rotate around a rotary shaft within a certain angle;

the length ratio of the first airbag support plate to the second airbag support plate is 1 to 1.5.

3. The system of claim 2, wherein the system further comprises a controller configured to control the controller,

Further comprises:

an angle sensor: the rotating shafts are arranged on the first air bag supporting plate and the second air bag supporting plate and are used for collecting the rotating angle of the first air bag supporting plate and sending the collected rotating angle of the first air bag supporting plate to the controller.

4. The system of claim 3, wherein the system further comprises a controller configured to control the controller,

The bottom of the first airbag supporting plate, which is close to the rotating shaft, is provided with a wedge-shaped waist airbag, and the top of the second airbag supporting plate, which is close to the rotating shaft, is provided with a plurality of strip-shaped hip airbags.

5. The system of claim 4, wherein the system further comprises a controller configured to control the controller,

The controller is also used for receiving the angle data of the angle sensor and controlling the waist air bag and the hip air bag to be inflated and deflated according to the angle data.

6. A method of multi-posture decubitus mattress control, the method being based on a multi-posture decubitus mattress control system of any one of claims 1-5, the method comprising:

Acquiring pressure data of each air bag in the air bag layer, processing all the pressure data by using an bubbling sequencing algorithm, arranging the pressure data according to a size sequence, calculating an average value of all the pressure data, and recording a maximum value and a minimum value in the pressure data;

Calculating the difference value between the maximum value and the minimum value in the pressure data, and comparing the difference value with the average value to obtain the ratio of the difference value to the average value;

Comparing the ratio with a preset ratio threshold, if the ratio is larger than the preset ratio threshold, a local high-pressure area exists, deflating the air bags in the local high-pressure area, and inflating peripheral air bags adjacent to the local high-pressure area;

And re-acquiring the pressure data of each air bag in the air bag layer, and repeating the steps until the ratio is smaller than or equal to a preset ratio threshold.

7. The method as recited in claim 6, further comprising:

acquiring the rotation angle of the first air bag supporting plate, and when the rotation angle is in a preset first rotation angle interval, performing inflation operation on the waist air bag.

8. The method as recited in claim 7, further comprising:

acquiring the rotation angle of the first airbag support plate, and controlling the plurality of strip-shaped hip airbags to be partially inflated and partially deflated when the rotation angle is in a preset second rotation angle interval;

The state of the plurality of strip-shaped buttock air bags is kept for a preset second time after the inflation and deflation of the plurality of strip-shaped buttock air bags are continuously carried out for a preset first time, then the original inflated air bags are controlled to be deflated, and the original deflated air bags are inflated, and are kept for a preset second time after the preset first time, and the inflation and deflation are sequentially and circularly carried out alternately.