A body posture assisted adjustment method and device

Abstract

This invention relates to a method and apparatus for assisting in posture adjustment, belonging to the technical field of data processing. It includes: acquiring user image information and identifying buttock features from the user image information; determining the relative position of the buttocks on the bed surface based on the buttock features from the user image information; determining an initial distance based on the relative position of the buttocks and a preset inflation bladder position; determining a correction distance based on the relative position of the buttocks and a preset theoretical buttock position accommodating area; controlling the inflation bladder to move to the relative position of the buttocks according to the initial distance when the preset inflation bladder is not inflated; inflating the inflation bladder with a preset baseline inflation volume to support the buttocks, and controlling the inflation bladder to support the user's buttocks for adjustment and movement according to the correction distance. This application assists nursing staff in quickly adjusting the patient's posture, achieving rapid repositioning.

Description

Technical Field

[0001] This invention relates to the field of data processing, and in particular to a method and apparatus for assisting in body posture adjustment. Background Technology

[0002] As an important piece of equipment for caring for special groups such as patients with limited mobility and the disabled, the functional design of nursing beds directly affects the quality of care and the comfort of the patients.

[0003] Most nursing beds on the market have a headboard tilt adjustment function. This is achieved by using hydraulic drives or electric actuators to rotate the headboard frame around the hinge point, raising the headboard from a horizontal position to a certain tilt angle. However, in actual nursing applications, when the headboard is tilted, due to the unavoidable insufficient friction between the patient's body and the bed surface, and the patient's inability to actively maintain their position, the body is prone to sliding down the bed surface towards the foot of the bed. This sliding can lead to abnormal patient posture.

[0004] When it comes to adjusting a patient's posture after they have slipped, it usually relies on manual intervention by nursing staff. However, because patients are typically heavy and have limited mobility, nursing staff often have to expend a lot of physical strength to restore the posture. This not only results in low adjustment efficiency and an inability to achieve rapid restoration, but also increases the workload of nursing staff. Summary of the Invention

[0005] To assist nursing staff in quickly adjusting the patient's posture and achieving rapid repositioning, this invention provides a method and device for assisting in posture adjustment.

[0006] In a first aspect, the present invention provides a method for assisting in body posture adjustment, which adopts the following technical solution: A method for assisting in body posture adjustment includes: Collect user image information and identify and determine buttock features from the user image information; The relative position of the bottom of the buttocks on the bed surface is determined from the user's image information based on buttock features; The initial distance is determined based on the relative position of the buttocks and the preset inflation bladder ejection position; The correction distance is determined based on the relative position of the buttocks and the preset theoretical buttock position tolerance area; When the preset airbag is not inflated, the airbag is moved to the relative position of the buttocks according to the initial distance. The airbag is inflated to a preset baseline inflation volume to support the buttocks, and the airbag is adjusted and moved to support the user's buttocks using a correction distance control.

[0007] By adopting the above technical solution, when the nursing bed tilts and the patient slides down, the pre-installed airbag on the nursing bed can move to the patient's buttocks position under the system's control. Then, by inflating the airbag, it can support the patient's buttocks and assist the caregiver in pushing the patient back into position. After the patient's posture is restored, the airbag can still support the patient's buttocks, allowing the patient to maintain a comfortable posture and preventing them from sliding down again. The above equipment and method significantly improve the efficiency of caregivers in adjusting the patient's posture.

[0008] Optional, also includes: Select user facial features from user image information; The system identifies user facial features, retrieves user information from a pre-set user database, and extracts user weight features from the user information. The theory of matching user weight characteristics drives resistance; Matching the reference inflation volume with the reference support force; When the theoretical driving resistance is greater than the benchmark support force, the difference between the theoretical driving resistance and the benchmark support force is calculated to obtain the resistance difference; The inflation correction amount is matched according to the resistance difference, and the reference inflation amount is corrected according to the inflation correction amount to obtain the pushing inflation amount; During the body posture adjustment process, the airbag is inflated and corrected according to the amount of air pushed in.

[0009] Optional, also includes: After the body posture adjustment is completed, the preset tilt angle of the rotating mattress is collected; Calculate the weight compression component based on the user's weight characteristics and tilt angle; Calculate the difference between the weight-pressure component and the reference support force to obtain the load-bearing difference; The load-bearing air volume is obtained by matching the load-bearing difference and correcting the baseline inflation volume according to the load-bearing air volume. The airbag is inflated according to the weight-bearing capacity to support the user and prevent them from slipping down after adjusting their posture.

[0010] Optionally, neck features can be identified from user image information; The relative position of the neck on the bed surface is determined from the user's image information based on the neck features; The preset support position change path of the extension and retraction rod is determined based on the relative position of the neck, the relative position of the buttocks, and the position of the airbag. When the user adjusts their posture, the retractable rod is controlled to rise and fall along the path of the support position change to support and lift the user's waist and abdomen.

[0011] Secondly, this application provides a posture adjustment assist device, which adopts the following technical solution: A posture assistance adjustment device, controlled by the above-mentioned posture assistance adjustment method, includes a bed frame, a fixed mattress fixedly installed on the bed frame, a rotating mattress rotatably installed on the bed frame, and an inflatable support mechanism for users to lean against and support themselves. The bed frame is equipped with a first electric push rod for driving the rotating mattress to rotate. The inflatable support mechanism includes a sliding pad, an inflatable bladder integrally formed with the sliding pad, and an air pump for inflating the inflatable bladder. An electric exhaust valve for venting air is installed on one side of the inflatable bladder. Both the fixed mattress and the rotating mattress have a through groove, and the sliding pad is annular and passes through both through grooves to allow the airbag to adjust its position.

[0012] By adopting the above technical solution, by setting a sliding pad and an air bag on the nursing bed, and by inflating the air bag, and by adjusting the position of the air bag through the sliding pad, it is convenient to adjust the patient's posture with the air bag.

[0013] Optionally, the bed frame has a sliding groove, in which the rotating shaft of the rotating mattress is slidably mounted and driven to move by a second electric push rod mounted on the bed frame. The rotating mattress has a flat position and an inclined position. In the flat position, the rotating mattress is close to the fixed mattress. In the inclined position, the rotating mattress is away from the fixed mattress and forms an ejection channel between them.

[0014] Optionally, the inflatable support mechanism further includes a retractable rod that is lifted and installed in the ejection channel, the retractable rod having a sponge sleeve on its outer side; the retractable rod abuts against the top of the sliding pad; in the flat position, the retractable rod drives the sliding pad to recess downward from the ejection channel and confines the inflatable bladder within the ejection channel; in the tilted position, the retractable rod rises and releases the inflatable bladder and the sliding pad from the ejection channel.

[0015] By adopting the above technical solution, when the nursing bed is in a flat position, the airbag can be pulled into the ejection channel by the extension rod, and the airbag will not easily interfere with the patient's lying area. When the nursing bed is in a tilted position, the airbag can be actively pushed out of the ejection channel, at which time the patient can selectively use the airbag to adjust their body position.

[0016] Optionally, the inflatable support mechanism further includes a first rotating plate rotatably mounted on the rotating mattress and a second rotating plate rotatably mounted on the fixed mattress. The first rotating plate and the second rotating plate are rotatably connected, and the rotatable connection point between them is connected to the retractable rod through a connecting piece. In the tilted use state, the position of the rotatable connection point between the first rotating plate and the second rotating plate moves upward to drive the retractable rod to move upward.

[0017] Optionally, the inflatable support mechanism further includes a drive rod disposed at the rotational connection between the first rotating plate and the second rotating plate, and a drive motor for driving the sliding pad to slide to adjust the position of the inflatable bladder; the drive rod abuts against the lower side of the sliding pad, the drive rod has a drive post in the circumferential direction, and the edge of the sliding pad has drive holes spaced along the length direction for insertion and cooperation with the drive post; The drive rod is connected to the drive motor via a sprocket and chain structure.

[0018] By adopting the above technical solution, the airbag is driven by a drive motor and a sprocket and chain structure, which facilitates the position adjustment of the airbag on the bed surface. Furthermore, once the airbag is in place, the drive motor can lock its position, making it difficult for the airbag's position to be passively changed.

[0019] Optionally, during the process of switching from the tilted use state to the flat state, the electric exhaust valve opens, and the retractable rod abuts against the airbag and crushes the airbag to deflate it.

[0020] By adopting the above technical solution, when the electric exhaust valve is opened, the airbag can actively vent air, and during the process of the retractable rod pulling the airbag back into the top outlet channel, the retractable rod can crush the airbag, thereby driving the airbag to passively and quickly vent air.

[0021] In summary, this application includes at least one of the following beneficial technical effects: When the nursing bed tilts and the patient slides down, the pre-installed airbag on the bed moves to the patient's buttocks under system control. Inflating the airbag provides support to the patient's buttocks and assists the caregiver in gently pushing the patient back into position. Once the patient's posture is restored, the airbag remains under the patient's buttocks, allowing the patient to maintain a comfortable posture and preventing further slippage. This equipment and method significantly improve the efficiency of caregivers in adjusting patient posture. When the nursing bed is in a flat position, the airbag can be pulled into the ejection channel by the extension rod, and the airbag will not easily interfere with the patient's lying area. When the nursing bed is in a tilted position, the airbag can be actively pushed out of the ejection channel, at which time the patient can selectively use the airbag to adjust their body position. When the electric exhaust valve is opened, the airbag can actively vent air. As the retractable rod pulls the airbag back into the ejection channel, the retractable rod can crush the airbag, thereby driving the airbag to passively and quickly vent air. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a posture assistance adjustment device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the inflatable support mechanism according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the device in an inclined state according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the device in a flat position according to an embodiment of the present invention; Figure 5 This is a flowchart of a posture-assisted adjustment method according to an embodiment of the present invention.

[0023] The parts referred to by the numbers in the above attached diagrams are as follows: 1. Bed frame; 11. Sliding groove; 2. Fixed mattress; 3. Rotating mattress; 4. Inflatable support mechanism; 41. Sliding pad; 411. Drive hole; 42. Inflatable bladder; 43. Air pump; 44. Retractable rod; 441. Foam cover; 45. First rotating plate; 46. Second rotating plate; 47. Drive rod; 471. Drive column; 48. Drive motor; 49. Connecting plate; 5. First electric push rod; 6. Second electric push rod; 7. Push-out channel; 8. Electric exhaust valve. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0025] This application discloses a posture adjustment assist device.

[0026] Reference Figure 1The posture adjustment device is a structural form of nursing bed, primarily serving patients with limited mobility, assisting nursing staff in adjusting the patient's posture on the bed. The posture adjustment device includes a bed frame 1, a fixed mattress 2, a rotating mattress 3, and an inflatable support mechanism 4. Both the fixed mattress 2 and the rotating mattress 3 are located on the bed frame 1. The fixed mattress 2 is fixedly connected to the bed frame 1 and generally provides support for the patient's legs, feet, and buttocks. The rotating mattress 3 is rotatably mounted on the bed frame 1 and generally provides support for the patient's back and head. A first electric push rod 5 is installed on the bed frame 1, and the rotating mattress 3 is connected to and driven by the first electric push rod 5 to rotate for tilt adjustment. The inflatable support mechanism 4 is installed on the bed frame 1 and is used to support the patient's buttocks, preventing the patient's body from sliding down when the rotating mattress 3 tilts, and assisting in lifting the patient's buttocks to adjust the patient's posture if the body slides down.

[0027] In this embodiment, sliding grooves 11 are provided on both sides of the bed frame 1. The rotation axis of the rotating mattress 3 slides within the sliding grooves and can rotate within the sliding grooves 11. A second electric push rod 6 is installed on the bed frame 1. The second electric push rod 6 is connected to the rotation axis of the rotating mattress 3 and can drive the rotating mattress 3 to move horizontally. Therefore, the rotating mattress 3 has a flat state and an inclined state.

[0028] In the flat position, the rotating mattress 3 approaches the fixed mattress 2, with only a small gap between them. In the tilted position, the first electric push rod 5 drives the rotating mattress 3 to rotate, and the second electric push rod 6 drives the rotating mattress 3 to translate, both of which move the rotating mattress 3 away from the fixed mattress 2, creating an ejection channel 7 between the rotating mattress 3 and the fixed mattress 2.

[0029] Reference Figure 1 and Figure 2 The inflatable support mechanism 4 includes a sliding pad 41, an air bladder 42, an air pump 43, a retractable rod 44, a first rotating plate 45, a second rotating plate 46, a drive rod 47, and a drive motor 48.

[0030] The sliding pad 41 is made of fabric and is ring-shaped. Both the fixed mattress 2 and the rotating mattress 3 have a through groove, and the sliding pad 41 passes through both through grooves simultaneously, so that the sliding pad 41 can slide when pulled.

[0031] The air bladder 42 is sewn onto the sliding pad 41 and located on the outer surface of the sliding pad 41. The initial position of the air bladder 42 is located at the connection between the fixed mattress 2 and the rotating mattress 3. The air bladder 42 can expand after being inflated, and the air bladder 42 can move synchronously with the sliding pad 41.

[0032] The airbag 42 has an electrically operated exhaust valve 8 on its side, which is controlled by a control system to open and close. An inflation channel is sewn along the length of the middle of the sliding pad 41; the inflation channel is annular and communicates with the airbag 42. The inflation channel has an inflation port, which is located on both sides of the sliding pad 41 along with the airbag 42. An air pump 43 is mounted on the bed frame 1 and connected to the inflation port; it is used to inflate the airbag 42.

[0033] When the airbag 42 needs to be inflated, it is inflated by the air pump 43. When the airbag 42 needs to be deflated, the airbag 42 is deflated by controlling the opening of the electric deflation valve 8.

[0034] Reference Figure 3 and Figure 4 The first rotating piece 45 is rotatably connected to the side wall of the rotating mattress 3, and the rotatable connection point between the two is defined as the first rotating point. The second rotating piece 46 is rotatably connected to the side wall of the fixed mattress 2, and the rotatable connection point between the two is defined as the second rotating point. The first rotating piece 45 and the second rotating piece 46 are rotatably connected to each other, and the rotatable connection point between the two is defined as the third rotating point. In this embodiment, there are two sets of the first rotating piece 45 and the second rotating piece 46, located on both sides of the rotating mattress 3 and the fixed mattress 2, respectively.

[0035] The retractable rod 44 is a cylindrical metal rod, which is mounted on the ejector channel 7. A sponge sleeve 441 is fitted over the outer side of the retractable rod 44, and its two ends are rotatably connected to the third rotating part via connecting pieces 49. The retractable rod 44 and the connecting pieces 49 on both sides form a gate-shaped channel. The retractable rod 44 is located above the top of the sliding pad 41, allowing both the sliding pad 41 and the inflatable bladder 42 to pass through the gate-shaped channel.

[0036] In this embodiment, the positions of the first and second rotation points are both higher than the third rotation point. When the rotating mattress 3 is in a flat position, the retractable rod 44 is located in the ejection channel 7. The retractable rod 44 pulls the sliding pad 41 and the air bladder 42 downwards and confines them within the ejection channel 7, thus fixing the mattress 2 and the rotating mattress 3 and compressing the three of them.

[0037] When the rotating mattress 3 is switched from a flat position to an inclined position, the ejection channel 7 expands and the position of the third rotation point moves upward, thereby driving the retractable rod 44 to move upward and out of the ejection channel 7. At this time, both the sliding pad 41 and the air bladder 42 are released. When the sliding pad 41 is pulled, the air bladder 42 can move away from below the retractable rod 44.

[0038] The drive rod 47 passes through the third rotation point and is coaxial with the rotation axis of the third rotation point. The drive rod 47 can serve as the rotation axis between the first rotating plate 45 and the second rotating plate 46.

[0039] The drive rod 47 abuts against the lower end of the sliding pad 41 and tightens the sliding pad 41. The drive rod 47 has a drive post 471 circumferentially, and the drive post 471 is a cylindrical protrusion. The edge of the sliding pad 41 is reinforced along its length to improve tensile strength, and the edge of the sliding pad 41 has drive holes 411 spaced along its length. The drive holes 411 are inserted into the drive post 471.

[0040] When the drive rod 47 rotates, the drive pin 471 inserts into the drive hole 411 one by one, thereby driving the sliding pad 41 to slide.

[0041] Reference Figure 1 and Figure 2 The drive motor 48 is mounted on the bed frame 1 and is connected to the drive rod 47 via a sprocket and chain structure for transmission. Therefore, by rotating the drive motor 48 forward or in reverse, the airbag 42 is driven to move in the direction of rotating the mattress 3 or in the direction of fixing the mattress 2.

[0042] In this embodiment, the inflatable bladder 42 can not only be used to adjust the patient's posture, but can also be moved to the legs, waist, abdomen, and head for these areas to lean against. After the inflatable bladder 42 is moved into place, it is then inflated.

[0043] In this embodiment, when the mattress 3 is rotated from the tilted state to the flat state, the air bladder 42 can be moved below the retractable rod 44, and the electric exhaust valve 8 can be opened. As the retractable rod 44 pulls the air bladder 42 into the ejection channel 7, it can crush the air bladder 42 to quickly release air. At the same time, when the air bladder 42 is located in the ejection channel 7, the inner wall of the ejection channel 7 can further compress and release air from the air bladder 42.

[0044] Based on the same inventive concept, embodiments of the present invention provide a method for assisting in body posture adjustment.

[0045] Reference Figure 5 A method for assisting in body posture adjustment includes the following steps: Step S1: Collect user image information and identify and determine buttock features from the user image information; User image information refers to images captured by cameras of users lying on nursing beds. Here, "users" specifically refers to patients with limited mobility who require care from nursing staff. Each ward is equipped with a one-to-one monitoring camera, pointed towards the bed. Users can be identified from these user image information images while lying on the nursing bed.

[0046] The buttock features refer to the patient's buttocks. These features can be obtained from user image information through feature recognition.

[0047] Step S2: Determine the relative position of the bottom of the buttocks on the bed surface based on the buttock features from the user image information.

[0048] The relative position of the buttocks refers to the specific spatial location of the lowest point of the buttocks feature that is in direct contact with the bed surface, within the bed surface spatial coordinate system, with the bed surface as the spatial reference. First, a bed surface spatial coordinate system is established based on a preset reference point, with the reference point as the origin. Then, the position of the patient's buttocks in the image and its distance from the reference point are determined based on the buttocks feature. Combining this with the preset image scale captured by the camera, the actual relative position of the buttocks feature on the bed surface is finally determined.

[0049] Step S3: Determine the initial distance based on the relative position of the buttocks and the preset inflation bladder ejection position.

[0050] The airbag ejection position refers to the position where the airbag 42 is ejected from its retracted state onto the bed surface. This position is between the rotating bed frame 1 and the fixed bed frame 1. The airbag ejection position is a fixed coordinate point in the bed surface spatial coordinate system.

[0051] The initialization distance refers to the spatial displacement distance required for the inflatable bladder 42 to move from its ejection position to its relative position to the bottom of the buttocks. The initialization distance can be calculated from the ejection position and the relative position to the bottom of the buttocks in the bed surface spatial coordinate system.

[0052] Step S4: Determine the correction distance based on the relative position of the buttocks and the preset theoretical buttock position accommodating area.

[0053] The theoretical hip position accommodating area refers to the area on the bed surface where the patient's hips are positioned when lying normally and not slipping down. This area is a pre-set position based on the patient's body shape and will not be elaborated on here.

[0054] The correction distance refers to the spatial displacement distance required to move the patient's buttocks from the relative position of the buttocks to the theoretical buttocks-accommodating area. It is the spatial displacement distance between the relative position of the buttocks and the theoretical buttocks-accommodating area.

[0055] The correction distance can be calculated from the relative position of the buttocks and the theoretical buttocks accommodation area in the bed surface spatial coordinate system.

[0056] Step S5: When the preset airbag 42 is not inflated, control the airbag 42 to move to the position relative to the bottom of the buttocks according to the initial distance.

[0057] When the camera detects that the patient's posture is abnormal and he is sliding down, the airbag 42 is pushed out and the airbag 42 is pulled to move on the bed surface by the drive motor 48. First, it is moved to the position of the patient's buttocks according to the initial distance. During this process, the airbag 42 is not inflated.

[0058] Step S6: Inflate the airbag 42 with a preset baseline inflation volume to support the buttocks, and adjust the movement of the airbag 42 supporting the user's buttocks by controlling the correction distance.

[0059] The baseline inflation volume is the amount of air that the airbag 42 is inflated to, based on the patient's normal weight, and is sufficient to support the patient's buttocks and push the patient without collapsing.

[0060] When the airbag 42 is in the position relative to the bottom of the buttocks, it is first inflated to the reference inflation volume, so that the inflation volume supports and abuts against the patient's buttocks. After the support is completed, the drive motor 48 drives the airbag 42 to move towards the theoretical buttocks accommodation area. The moving distance is the correction distance. During the movement of the airbag 42, it can lift and push the patient's buttocks, thereby adjusting the patient's posture.

[0061] A posture-assisted adjustment method also includes the following steps: In this embodiment, during the process of horizontally pushing and adjusting the patient, the patient's weight difference will affect the support capacity of the air bladder 42. Therefore, it is necessary to correct the inflation amount of the air bladder 42 to avoid the air bladder 42 being crushed during the process of pushing the patient.

[0062] Step S600: Select the user's facial features from the user image information.

[0063] User facial features refer to the patient's facial features. User facial features are a region within the user's image information. Selecting user facial features involves framing the image and removing other background elements, leaving only the user's facial features for subsequent processing.

[0064] Step S601: Recognize the user's facial features and retrieve user information from the preset user database, and retrieve the user's weight features from the user information.

[0065] User data refers to the personal information that patients register at the hospital when they visit a doctor. This personal information includes details such as height and weight. The user database is an internal database within the hospital system that stores data on all patients who have visited the hospital throughout history.

[0066] By scanning and recognizing the user's facial features, the identified features are compared with data in the user database, thereby obtaining the current patient's user information from the database.

[0067] User weight characteristics can be directly retrieved from user information.

[0068] Step S602: Promote resistance based on user weight feature matching theory.

[0069] Theoretical pushing resistance refers to the total resistance that must be overcome to push the user's hips from their current position to the theoretical hip position. Theoretical pushing resistance is directly proportional to the user's weight characteristics; the greater the user's weight characteristics, the greater the theoretical pushing resistance.

[0070] Step S603: Match the reference support force based on the reference inflation volume.

[0071] The reference support force refers to the maximum thrust that the airbag 42 can provide after being inflated with a reference inflation volume. The reference support force is directly proportional to the reference inflation volume; the larger the reference inflation volume, the greater the reference support force.

[0072] Step S604: When the theoretical driving resistance is greater than the reference support force, calculate the difference between the theoretical driving resistance and the reference support force to obtain the resistance difference.

[0073] By comparing the theoretical pushing resistance and the benchmark support force, it was determined whether the inflatable bladder 42 could push the patient without being crushed.

[0074] When the theoretical pushing resistance is not greater than the reference support force, the inflatable bladder 42 can directly push the patient, and there is no need to add extra air to the inflatable bladder 42.

[0075] When the theoretical pushing resistance is greater than the baseline support force, the inflatable bladder 42 with the baseline inflation volume cannot push the patient, and the inflatable bladder 42 will be flattened during the pushing process. In this case, the inflatable bladder 42 needs to be inflated. The resistance difference is the numerical difference between the theoretical pushing resistance and the baseline support force, representing the amount of additional support force required when the baseline support force is insufficient to push the buttocks.

[0076] Step S605: Match the inflation correction amount according to the resistance difference, and correct the reference inflation amount according to the inflation correction amount to obtain the pushing inflation amount.

[0077] The inflation correction amount is the amount of additional air that needs to be added to the airbag 42. The inflation correction amount is directly proportional to the resistance difference; the greater the resistance difference, the greater the inflation correction amount.

[0078] The pushing inflation volume refers to the actual working inflation volume in which the airbag 42 can provide sufficient support and smoothly push the patient's buttocks to complete the position adjustment. The pushing inflation volume is the sum of the baseline inflation volume and the inflation correction volume.

[0079] Step S606: During the body posture adjustment process, the airbag 42 is inflated and corrected according to the amount of air pushed in.

[0080] When the airbag 42 is in the position relative to the bottom of the buttocks, the system first inflates the airbag 42 with the reference inflation volume, and then corrects the airbag 42 with the pushing inflation volume according to the patient's actual weight, so that the pressure inside the airbag 42 can meet the requirements of pushing the patient.

[0081] A posture-assisted adjustment method also includes the following steps: This embodiment applies to situations where the patient has completed posture adjustment. In a tilted position, the pressure on the inflatable bladder 42 increases, which may cause it to be flattened and the patient to slide down again. This embodiment addresses the above situation.

[0082] Step S610: After completing the body posture adjustment, collect the preset tilt angle of the rotating mattress 3.

[0083] The tilt angle refers to the angle between the surface of the rotating mattress 3 and the horizontal plane of the fixed mattress 2 after the rotating mattress 3 has been adjusted. A tilt sensor is installed at the bottom of the rotating mattress 3, and the tilt sensor is connected to the system, which collects the tilt angle of the rotating mattress 3 through the tilt sensor.

[0084] Step S611: Calculate the weight compression component based on the user's weight characteristics and tilt angle.

[0085] The downward force of body weight refers to the component of force exerted by the user's body weight due to the tilt of the mattress and moving downwards along the tilt direction of the mattress surface. This force is obtained by decomposing gravity and is calculated by using trigonometric functions based on the user's body weight characteristics and the tilt angle.

[0086] Step S612: Calculate the difference between the weight-down component and the reference support force to obtain the load-bearing difference.

[0087] The load-bearing difference refers to the amount of additional support force required when the baseline support force of the inflatable bladder 42 is insufficient to offset the downward force of the patient.

[0088] Step S613: Match the load-bearing air replenishment volume based on the load-bearing difference, and correct the benchmark inflation volume according to the load-bearing air replenishment volume to obtain the load-bearing inflation volume.

[0089] The load-bearing inflation capacity refers to the additional inflation volume that allows the air bladder 42 to provide the corresponding support to prevent the buttocks from slipping after the patient's posture is adjusted. The load-bearing inflation capacity is directly proportional to the load difference; the larger the load-bearing inflation capacity, the larger the load difference.

[0090] The load-bearing inflation volume refers to the final working inflation volume of the air bladder 42 that can counteract the downward pressure of body weight to achieve fixed support for the hips. The load-bearing inflation volume is the sum of the baseline inflation volume and the load-bearing supplemental inflation volume.

[0091] Step S614: Inflate the airbag 42 according to the load-bearing inflation amount to support the user and prevent them from sliding down after adjusting their posture.

[0092] During the process of adjusting the patient's buttocks from their relative position at the bottom of the buttocks to the theoretical buttock position area using the inflatable bladder 42, the system replenishes the air in the bladder 42 according to the weight-bearing inflation volume. Specifically, inflation is gradual during movement. If the inflation volume of the bladder 42 at the relative position at the bottom of the buttocks is the baseline inflation volume, then inflation gradually increases from the baseline volume to the weight-bearing volume. If the inflation volume of the bladder 42 at the relative position at the bottom of the buttocks is the pushing inflation volume, then inflation gradually increases from the pushing inflation volume to the weight-bearing volume.

[0093] A posture-assisted adjustment method also includes the following steps: Step S620: Identify and determine neck features from user image information.

[0094] Neck features refer to the location of the patient's neck. The patient's neck can be identified from the user's image information through feature recognition.

[0095] Step S621: Determine the relative position of the neck on the bed surface based on the neck features from the user image information.

[0096] The relative position of the neck refers to the specific spatial location of the point in the bed surface's spatial coordinate system where the neck features are in direct contact with the bed surface, with the bed surface as the spatial reference. The specific method for determining this is the same as step S2, and will not be repeated here.

[0097] Step S622: Determine the preset support position change path of the retractable rod 44 on the waist and abdomen based on the relative position of the neck, the relative position of the buttocks, and the position of the airbag.

[0098] In this embodiment, when adjusting the patient's posture using the inflatable bladder 42, the patient's waist and abdomen are typically required to be in a straight line. However, after the patient's body slides down, the waist and abdomen are usually in a bent position. This bent position affects the pushing effect of the inflatable bladder 42 on the patient and can cause injury to the patient's waist and abdomen. Therefore, it is necessary to support the patient's waist and abdomen when adjusting the posture. Here, a lifting method using a retractable rod 44 is adopted. After the retractable rod 44 is pushed out from the ejection channel 7, it can continue to rise under the control of the system and abut against the lower part of the patient's waist and abdomen, and change synchronously with the position change of the waist and abdomen.

[0099] The path of the support position change is the dynamic movement path of the extension / retraction rod 44 as it moves synchronously with the waist and abdomen. The support position is determined by the line segment connecting the relative positions of the neck and the buttocks, extending upwards from the top of the inflatable bladder and intersecting with the connecting line segment.

[0100] The path change of the connecting line segment is fitted by measuring the path changes of the relative positions of the neck and hips, and the path change of the support position in the bed surface spatial coordinate system is determined from the path changes of the connecting line segment. Here, the path of the support position change is the path of vertical lifting adjustment.

[0101] Step S623: When the user adjusts their posture, control the extension rod 44 to rise and fall along the support position change path to support and lift the user's waist and abdomen.

[0102] When adjusting the patient's posture, the retractable lever 44 is vertically raised and lowered to ensure that it always rests against the patient's waist and abdomen to provide support and keep the patient's waist and abdomen in a straight line.

[0103] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A method for assisting in body posture adjustment, characterized in that, include: Collect user image information and identify and determine buttock features from the user image information; The relative position of the bottom of the buttocks on the bed surface is determined from the user's image information based on buttock features; The initial distance is determined based on the relative position of the buttocks and the preset inflation bladder ejection position; The correction distance is determined based on the relative position of the buttocks and the preset theoretical buttock position tolerance area; When the preset inflatable bladder (42) is not inflated, the inflatable bladder (42) is moved to the relative position of the buttocks according to the initial distance. The airbag (42) is inflated with a preset baseline inflation volume to support the buttocks, and the airbag (42) is adjusted and moved to support the user's buttocks by adjusting the distance control of the airbag (42).

2. The body posture assistance adjustment method according to claim 1, characterized in that, Also includes: Select user facial features from user image information; The system identifies user facial features, retrieves user information from a pre-set user database, and extracts user weight features from the user information. The theory of matching user weight characteristics drives resistance; Matching the reference inflation volume with the reference support force; When the theoretical driving resistance is greater than the benchmark support force, the difference between the theoretical driving resistance and the benchmark support force is calculated to obtain the resistance difference; The inflation correction amount is matched according to the resistance difference, and the reference inflation amount is corrected according to the inflation correction amount to obtain the pushing inflation amount; During the body posture adjustment process, the inflation bag (42) is inflated and corrected according to the amount of inflation pushed.

3. The body posture assistance adjustment method according to claim 2, characterized in that, Also includes: After the body posture adjustment is completed, the preset tilt angle of the rotating mattress (3) is collected; Calculate the weight compression component based on the user's weight characteristics and tilt angle; Calculate the difference between the weight-pressure component and the reference support force to obtain the load-bearing difference; The load-bearing air volume is obtained by matching the load-bearing difference and correcting the baseline inflation volume according to the load-bearing air volume. The airbag (42) is inflated according to the load-bearing inflation volume to support the user and prevent them from sliding down after the body posture adjustment is completed.

4. The body posture assistance adjustment method according to claim 3, characterized in that, Also includes: Identify and determine neck features from user image information; The relative position of the neck on the bed surface is determined from the user's image information based on the neck features; The path of the pre-set support position change of the retractable rod (44) on the waist and abdomen is determined based on the relative position of the neck, the relative position of the buttocks, and the position of the airbag. When the user adjusts their posture, the retractable rod (44) is controlled to rise and fall along the support position change path to support and lift the user's waist and abdomen.

5. A posture assistance adjustment device, controlled by the posture assistance adjustment method as described in claim 1, characterized in that, It includes a bed frame (1), a fixed mattress (2) fixedly mounted on the bed frame (1), a rotating mattress (3) rotatably mounted on the bed frame (1), and an inflatable support mechanism (4) for users to lean against and support themselves. The bed frame (1) is equipped with a first electric push rod (5) for driving the rotating mattress (3) to rotate. The inflatable support mechanism (4) includes a sliding pad (41), an inflatable bladder (42) integrally formed with the sliding pad (41), and an air pump (43) for inflating the inflatable bladder (42). An electric exhaust valve (8) for venting is installed on one side of the inflatable bladder (42). Both the fixed mattress (2) and the rotating mattress (3) have a through groove. The sliding pad (41) is annular and passes through both through grooves to allow the airbag (42) to adjust its position.

6. The posture adjustment device according to claim 5, characterized in that, The bed frame (1) has a sliding groove (11), and the rotating shaft of the rotating mattress (3) is slidably installed in the sliding groove (11) and driven to move by a second electric push rod (6) installed on the bed frame (1). The rotating mattress (3) has a flat state and an inclined use state. In the flat state, the rotating mattress (3) is close to the fixed mattress (2). In the inclined use state, the rotating mattress (3) is away from the fixed mattress (2) and forms an ejection channel (7) between the two.

7. A posture adjustment device according to claim 6, characterized in that, The inflatable support mechanism (4) further includes a retractable rod (44) that is lifted and installed in the ejection channel (7). The retractable rod (44) has a sponge sleeve (441) on its outer side. The retractable rod (44) abuts against the top of the sliding pad (41). In the flat position, the retractable rod (44) drives the sliding pad (41) to sink downward from the ejection channel (7) and confines the inflatable bladder (42) within the ejection channel (7). In the tilted position, the retractable rod (44) rises and releases the inflatable bladder (42) and the sliding pad (41) from the ejection channel (7).

8. The posture adjustment device according to claim 7, characterized in that, The inflatable support mechanism (4) further includes a first rotating plate (45) rotatably mounted on the rotating mattress (3) and a second rotating plate (46) rotatably mounted on the fixed mattress (2). The first rotating plate (45) and the second rotating plate (46) are rotatably connected, and the rotatable connection point of the two is connected to the retractable rod (44) through a connecting piece (49). In the tilted use state, the position of the rotatable connection point of the first rotating plate (45) and the second rotating plate (46) moves upward to drive the retractable rod (44) to move upward.

9. A posture adjustment device according to claim 8, characterized in that, The inflatable support mechanism (4) further includes a drive rod (47) disposed at the rotational connection between the first rotating plate (45) and the second rotating plate (46) and a drive motor (48) for driving the sliding pad (41) to slide to adjust the position of the inflatable bag (42); the drive rod (47) abuts against the lower side of the sliding pad (41), the drive rod (47) has a drive post (471) in the circumferential direction, and the edge of the sliding pad (41) has drive holes (411) spaced along the length direction for insertion and cooperation with the drive post (471). The drive rod (47) is connected to the drive motor (48) via a sprocket and chain structure.

10. A posture adjustment device according to claim 7, characterized in that, During the process of switching from the tilted use state to the flat state, the electric exhaust valve (8) opens, and the retractable rod (44) abuts against the inflatable bladder (42) and crushes the inflatable bladder (42) to release air.

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