Sitting posture correction device and sitting posture correction chair

Abstract

The embodiment of the present invention discloses a sitting posture correction device and a sitting posture correction chair, wherein the sitting posture correction device comprises a partitioned seat cushion, a partitioned back cushion, an inflation module, a pressure collection module and a main control module; the partitioned seat cushion comprises a left pelvic support unit, a right pelvic support unit, a left ischial tuberosity support unit, a right ischial tuberosity support unit, a left thigh rear support unit, a right thigh rear support unit, a left thigh front support unit, a right thigh front support unit and a leg separator support unit; the partitioned back cushion comprises an anterior superior iliac spine support unit and a waist support unit; the inflation module is used to receive an inflation instruction from the main control module and inflate the support unit corresponding to the inflation instruction, or receive an exhaust instruction from the main control module and exhaust the support unit corresponding to the exhaust instruction; the pressure collection module is used to collect the pressure values ​​of each support unit and send each pressure value to the main control module. Stable support for human bones is achieved.

Description

Technical Field

[0001] The invention relates to the field of medical care, and in particular to a sitting posture correction device and a sitting posture correction chair. Background Art

[0002] At present, in terms of patient sitting posture correction and body support, caregivers or nursing staff usually use physical modular components, such as sponges, cloths, etc., to support various mechanical support parts on the bones of patients with abnormal sitting posture. The disadvantage is that modular components are prone to displacement and deformation during use, resulting in failure to provide stable support for the human skeleton. For this reason, caregivers or nursing staff need to replace new physical support components according to the patient's physical changes. In addition, caregivers or nursing staff need to understand the human body structure and design reasonable support points based on the human body structure. Therefore, only caregivers or nursing staff with professional knowledge can design reasonable support points. Summary of the invention

[0003] In view of the above problems, the present invention provides a sitting posture correction device and a sitting posture correction chair.

[0004] The present application provides a sitting posture correction device, which includes a partitioned seat cushion, a partitioned back cushion, an inflation module, a pressure collection module and a main control module;

[0005] The partitioned seat cushion comprises a left pelvic support unit, a right pelvic support unit, a left ischial tuberosity support unit, a right ischial tuberosity support unit, a left thigh rear support unit, a right thigh rear support unit, a left thigh front support unit, a right thigh front support unit and a leg separator support unit;

[0006] The partitioned cushion includes an anterior superior iliac spine support unit and a lumbar support unit;

[0007] The pressure acquisition module is used to collect the pressure value of each support unit and send each pressure value to the main control module;

[0008] The main control module is used to send an inflation instruction and / or an exhaust instruction to the inflation module according to the various pressure values ​​and the target pressure value in the received current or preset instruction;

[0009] The inflation module is used to inflate the support unit corresponding to the inflation instruction according to the inflation instruction and / or to exhaust the support unit corresponding to the exhaust instruction according to the exhaust instruction.

[0010] The sitting posture correction device described in the present application, the partitioned seat cushion includes a seat cushion raised area and a seat cushion recessed area for stabilizing the user's legs and buttocks, the seat cushion raised area includes a first seat cushion raised area for stabilizing the outer edges of the user's legs and buttocks, and a second seat cushion raised area for stabilizing the inner edges of the user's legs.

[0011] The sitting posture correction device described in the present application, the partitioned cushion includes a cushion raised area and a cushion recessed area for stabilizing the user's waist.

[0012] The sitting posture correction device described in the present application also includes an input display module for displaying the pressure value and / or input parameters corresponding to each support unit, and for inputting the target pressure value corresponding to each support unit, the ventilation cycle and ventilation sequence of the cyclic ventilation of each support unit.

[0013] In the sitting posture correction device described in the present application, each supporting unit includes a plurality of air bags, and each air bag is connected by a ventilation duct.

[0014] The sitting posture correction device described in the present application, the inflation module includes an exhaust valve, an inflation pump, and a switch valve corresponding to each supporting unit one by one;

[0015] The exhaust valve, the air pump and each switch valve are connected to the main control module;

[0016] The main control module is also used for:

[0017] When the pressure acquisition module detects that the pressure value corresponding to a certain support unit is lower than the preset target pressure value, an inflation instruction is sent to the switch valve corresponding to the support unit whose pressure value is lower than the target pressure value, and an opening instruction is sent to the inflation pump to inflate the corresponding support unit until the pressure value of the corresponding support unit reaches the target pressure value, and then the corresponding switch valve and inflation pump are closed;

[0018] When the pressure acquisition module detects that the pressure value corresponding to a certain support unit is higher than the preset target pressure value, an exhaust instruction is sent to the switch valve corresponding to the support unit whose pressure value is higher than the target pressure value, and an opening instruction is sent to the exhaust valve to exhaust the corresponding support unit until the pressure value of the corresponding support unit drops to the preset pressure threshold, and then the corresponding switch valve and exhaust valve are closed.

[0019] The sitting posture correction device described in the present application, the pressure acquisition module includes multiple AD conversion units and pressure acquisition units corresponding to each supporting unit one by one, each pressure acquisition unit obtains the pressure value of the corresponding supporting unit, and sends the corresponding pressure value to the corresponding AD conversion unit, and the AD conversion unit converts the pressure value into an electrical signal and sends it to the main control module.

[0020] In the sitting posture correction device described in the present application, the AD conversion unit includes a voltage stabilizing circuit and an AD conversion element, and the voltage stabilizing circuit is used to stabilize the working voltage provided by the power supply to the AD conversion element.

[0021] The sitting posture correction device described in the present application, the AD conversion unit also includes an isolation circuit, the input end of the isolation circuit is connected to the output end of the AD conversion element, and the output end of the isolation circuit is connected to the main control module, which is used to isolate the interference of the external circuit on the AD conversion process.

[0022] The present application provides a sitting posture correction chair, which includes the sitting posture correction device described in the present application.

[0023] The sitting posture correction device disclosed in the present application includes a partitioned seat cushion, a partitioned back cushion, an inflation module, a pressure collection module and a main control module, wherein the partitioned seat cushion includes a left pelvic support unit, a right pelvic support unit, a left ischial tuberosity support unit, a right ischial tuberosity support unit, a left thigh rear support unit, a right thigh rear support unit, a left thigh front support unit, a right thigh front support unit and a leg separator support unit; the partitioned back cushion includes an anterior superior iliac spine support unit and a waist support unit; the inflation module is used to receive the inflation instruction of the main control module and inflate the support unit corresponding to the inflation instruction, or, receive the exhaust instruction of the main control module and exhaust the support unit corresponding to the exhaust instruction; the pressure collection module is used to collect the pressure values ​​of each support unit and send each pressure value to the main control module. The technical solution of the present application does not require the caregiver to master the human body structure. The preset support unit corresponding to the human body structure can achieve stable support for the human skeleton through inflation or exhaust, and it is not easy to cause displacement and deformation problems during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the present invention, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope of protection of the present invention. In each of the drawings, similar components are numbered similarly.

[0025] Figure 1 A schematic structural diagram of a sitting posture correction device proposed in an embodiment of the present application is shown;

[0026] Figure 2 A schematic diagram of the planar structure of a partitioned seat cushion and a partitioned back cushion proposed in an embodiment of the present application is shown;

[0027] Figure 3 A schematic diagram of the three-dimensional structure of a partitioned seat cushion and a partitioned back cushion proposed in an embodiment of the present application is shown;

[0028] Figure 4 A schematic diagram showing a sitting posture and corresponding air pressure distribution proposed in an embodiment of the present application is shown;

[0029] Figure 5 A schematic diagram showing another sitting posture and corresponding air pressure distribution proposed in an embodiment of the present application is shown;

[0030] Figure 6 A schematic structural diagram of another sitting posture correction device proposed in an embodiment of the present application is shown;

[0031] Figure 7 A schematic diagram of the structure of a pressure acquisition unit proposed in an embodiment of the present application is shown;

[0032] Figure 8 A schematic diagram of the structure of an AD conversion element proposed in an embodiment of the present application is shown;

[0033] Fig. 9 A schematic diagram of the structure of a voltage stabilizing circuit proposed in an embodiment of the present application is shown;

[0034] Fig.10 A schematic diagram of the structure of a communication data isolation circuit proposed in an embodiment of the present application is shown;

[0035] Fig.11 A schematic structural diagram of a communication clock isolation circuit proposed in an embodiment of the present application is shown.

[0036] Description of main component symbols:

[0037] 110-partitioned back cushion; 120-partitioned seat cushion; 130-inflatable module; 140-pressure acquisition module; 150-main control module; 160-input display module; 1-left pelvic support unit; 4-right pelvic support unit; 2-left ischial tuberosity support unit; 3-right ischial tuberosity support unit; 5-left thigh rear support unit; 6-right thigh rear support unit; 7-left thigh front support unit; 8-right thigh front support unit; 9-leg separator support unit; 10-anterior superior iliac spine support unit; 11-lumbar support unit. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0040] Hereinafter, the terms "including", "having" and their cognates, which may be used in various embodiments of the present invention, are intended only to indicate specific features, numbers, steps, operations, elements, components or combinations of the foregoing items, and should not be understood as first excluding the existence of one or more other features, numbers, steps, operations, elements, components or combinations of the foregoing items or adding the possibility of one or more features, numbers, steps, operations, elements, components or combinations of the foregoing items.

[0041] Furthermore, the terms “first”, “second”, “third”, etc. are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0042] Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meanings as those generally understood by those skilled in the art to which the various embodiments of the present invention belong. The terms (such as those defined in generally used dictionaries) will be interpreted as having the same meanings as the contextual meanings in the relevant technical field and will not be interpreted as having idealized meanings or overly formal meanings unless clearly defined in the various embodiments of the present invention.

[0043] The sitting posture correction device disclosed in the present application is provided with support units for supporting the human body according to the human body structure, and each support unit includes a plurality of air bags, and each air bag is connected by a ventilation duct. Each support unit is connected to a corresponding sensor, which can collect the pressure conditions of various parts of the user's body in real time, and each support unit can be inflated or exhausted according to the pressure conditions to ensure that the user can maintain a normal sitting posture and avoid the occurrence of abnormal development of bones, internal organs, etc. due to long-term abnormal sitting posture. The sitting posture correction device disclosed in the present application is suitable for hospitals, nursing homes and home care, and can be used for patients who are paralyzed, comatose, undergoing major surgery, undergoing fracture traction, severe burns (frostbite), and various serious and terminal patients.

[0044] Example 1

[0045] One embodiment of the present application provides a sitting posture correction device, such as Figure 1As shown, the sitting posture correction device includes: a partitioned seat cushion 120, a partitioned back cushion 110, an inflation module 130, a pressure collection module 140 and a main control module 150.

[0046] The plan view of the partition cushion 120 and the partition cushion 110 is as follows: Figure 2 As shown, the partitioned seat cushion 120 includes a left pelvic support unit 1, a right pelvic support unit 4, a left ischial tuberosity support unit 2, a right ischial tuberosity support unit 3, a left thigh rear support unit 5, a right thigh rear support unit 6, a left thigh front support unit 7, a right thigh front support unit 8 and a leg separator support unit 9. The partitioned backrest cushion 110 includes an anterior superior iliac spine support unit 10 and a lumbar support unit 11.

[0047] By setting and adjusting the internal pressure of the left ischial tuberosity support unit 2 and the right ischial tuberosity support unit 3, the horizontality of the patient's pelvis can be changed to restore the pelvis to a neutral position in the front direction.

[0048] By setting and adjusting the internal pressure of the left pelvic support unit 1 and the right pelvic support unit 4, stable support in the horizontal direction of the pelvis can be provided for the patient.

[0049] By setting different pressures for the left thigh rear support unit 5 and the left thigh front support unit 7, the left thigh support unit can be adjusted to different states such as high in the front and low in the back, low in the front and high in the back, or the same height between the front and back, which can adapt to the fixed thigh angle formed by the patient's thigh due to different degrees of hip flexion limitation, thereby supporting the abnormal thigh posture and ensuring that the pressure on the user's left thigh is evenly distributed; by setting different pressures for the right thigh rear support unit 6 and the right thigh front support unit 8, the right thigh support unit can be adjusted to different states such as high in the front and low in the back, low in the front and high in the back, or the same height between the front and back, which can adapt to the fixed thigh angle formed by the patient's thigh due to different degrees of hip flexion limitation, thereby supporting the abnormal thigh posture and ensuring that the pressure on the user's right thigh is evenly distributed.

[0050] By adjusting the internal pressure of the leg-spreader support unit 9, the height and width dimensions of the leg-spreader support unit 9 can be changed to meet the requirements of the size and strength of the thigh separation on both sides of different patients.

[0051] The anterior superior iliac spine support unit 10 acts on the posterior anterior superior iliac spine of the pelvis, and adjusts its internal pressure to provide different strengths of support to the anterior superior iliac spine, allowing the pelvis to roll forward and backward with the ischial tuberosities on both sides as fulcrums and provide comfortable strength of support.

[0052] The lumbar support unit 11 provides comfortable support for the lumbar spine, and disperses and supplements part of the pressure exerted by the anterior superior iliac spine support unit 10 on the anterior superior iliac spine, thereby achieving support for the spine.

[0053] Further, the three-dimensional diagram of the partition cushion 120 and the partition cushion 110 is as follows Figure 3 As shown, the zoned seat cushion 120 includes a seat cushion raised area and a seat cushion recessed area for stabilizing the user's legs and buttocks, wherein the seat cushion raised area includes a first seat cushion raised area for stabilizing the outer edges of the user's legs and buttocks, and a second seat cushion raised area for stabilizing the inner edges of the user's legs.

[0054] Further, the partitioned cushion 110 includes a cushion raised area and a cushion recessed area for stabilizing the user's waist.

[0055] Among them, each support unit includes multiple airbags, and each airbag is connected by a ventilation duct. There are obvious differences in the size and shape of each airbag. The volume of each airbag in the seat cushion recessed area and the back cushion recessed area is smaller than the volume of each airbag in the seat cushion raised area and the back cushion raised area, which effectively ensures that the seat cushion recessed area and the back cushion recessed area can fully contact the user, which can not only increase the user's comfort during use, but also make the pressure of each support unit more uniform, making the collected pressure values ​​more accurate. The use of larger airbags in the seat cushion raised area and the back cushion raised area can effectively stabilize the user. During use, the seat cushion recessed area and the back cushion recessed area that are in full contact with the user are more depressed due to pressure. The seat cushion raised area and the back cushion raised area can effectively stabilize the user in a fixed position, thereby correcting the user's sitting posture.

[0056] Among them, each adjacent airbag located in the adjacent part of the seat cushion concave area and the seat cushion convex area includes a smooth transition structure, so that the seat cushion concave area and the seat cushion convex area can be smoothly transitioned, which is conducive to improving the comfort of the buttocks and legs of the user during use. Each adjacent airbag located in the adjacent part of the back cushion concave area and the back cushion convex area includes a smooth transition structure, so that the back cushion concave area and the back cushion convex area can be smoothly transitioned, which is conducive to improving the comfort of the waist and back of the user during use.

[0057] For example, when the pressure value of each support unit is set to 5Kpa, after the user sits on the chair provided with the partition cushion 110 and the partition cushion 120, if the pressure data obtained by the pressure sensor of each support unit is as follows: Figure 4 As shown, the user's posture can be clearly seen from the data, wherein the pressure values ​​corresponding to the support units on the right side of the partitioned cushion 120 are significantly higher than those on the left side. Obviously, the user's pelvis is tilted.

[0058] Furthermore, when the user's pelvis tilts to the right, the main control module 150 can be used to inflate or exhaust each support unit to adjust the pressure value corresponding to each support unit so that the pressure values ​​corresponding to the support units in symmetrical positions are approximately the same to ensure that the user's sitting posture remains neutral. Figure 5 As shown, after adjustment by the main control module 150, the pressure values ​​corresponding to the various support units in symmetrical positions are approximately the same. Obviously, the user's sitting posture is standard and is in a neutral position.

[0059] It can be understood that the pressure acquisition module 140 is used to collect the pressure values ​​of each support unit and send each pressure value to the main control module 150; the main control module 150 is used to send inflation instructions and / or exhaust instructions to the inflation module 130 according to the various pressure values ​​and the target pressure values ​​in the received current or preset instructions; the inflation module 130 is used to inflate the support unit corresponding to the inflation instruction according to the inflation instruction and / or exhaust the support unit corresponding to the exhaust instruction according to the exhaust instruction.

[0060] The sitting posture correction device disclosed in this embodiment includes a partitioned seat cushion 120, a partitioned back cushion 110, an inflation module 130, a pressure collection module 140 and a main control module 150, wherein the partitioned seat cushion 120 includes a left pelvic support unit 1, a right pelvic support unit 4, a left ischial tuberosity support unit 2, a right ischial tuberosity support unit 3, a left thigh rear support unit 5, a right thigh rear support unit 6, a left thigh front support unit 7, a right thigh front support unit 8 and a leg separator support unit 9; the partitioned back cushion 110 includes an anterior superior iliac spine support unit 10 and a lumbar support unit 11; the inflation module 130 is used to receive an inflation instruction from the main control module 150 and inflate the support unit corresponding to the inflation instruction, or, receive an exhaust instruction from the main control module 150 and exhaust the support unit corresponding to the exhaust instruction; the pressure collection module 140 is used to collect the pressure values ​​of each support unit and send each pressure value to the main control module 150. The technical solution of this embodiment does not require the caregiver to understand the human body structure. The preset support unit corresponding to the human body structure can achieve stable support for the human skeleton through inflation or exhaust, and is not prone to displacement and deformation during use.

[0061] Example 2

[0062] The present application embodiment provides a sitting posture correction device, such as Figure 6 As shown, the sitting posture correction device also includes an input display module 160 for displaying the pressure value and / or input parameters corresponding to each supporting unit, and for inputting the target pressure value corresponding to each supporting unit, the ventilation cycle and ventilation sequence of each supporting unit's cyclic ventilation.

[0063] It can be understood that the input display module 160 can be a touch screen that matches the sitting posture correction device. The matching touch screen can be embedded in the sitting posture correction device, or a touch screen connected through the connection interface of the sitting posture correction device itself; the input display module 160 can also be a mobile terminal, such as a mobile phone and a pad, etc. The mobile terminal can be connected to the sitting posture correction device through Bluetooth, WIFI, USB, etc. The input display module 160 can also be an independent screen and independent buttons.

[0064] It can be understood that by displaying the pressure value corresponding to each supporting unit on the input display module 160, when automatically controlling the exhaust or inflation of each supporting unit, a control basis can be provided for the sitting posture correction device, that is, a setting reference basis can be provided for nursing or fitting personnel, thereby making the parameter setting process simpler and more convenient, and improving the parameter configuration efficiency.

[0065] Exemplarily, the inflation module 130 includes an exhaust valve, an inflation pump, and a switch valve corresponding to each supporting unit. The exhaust valve, the inflation pump, and each switch valve are connected to the main control module 150 .

[0066] The main control module 150 can be used for:

[0067] When the pressure acquisition module 140 detects that the pressure value corresponding to a certain support unit is lower than the preset target pressure value, an inflation instruction is sent to the switch valve corresponding to the support unit whose pressure value is lower than the target pressure value, and an opening instruction is sent to the inflation pump to open the corresponding switch valve and inflate the corresponding support unit until the pressure value of the corresponding support unit reaches the target pressure value, and then the corresponding switch valve and the inflation pump are closed; when the pressure acquisition module 140 detects that the pressure value corresponding to a certain support unit is higher than the target pressure value, an exhaust instruction is sent to the switch valve corresponding to the support unit whose pressure value is higher than the preset pressure threshold, and an opening instruction is sent to the exhaust valve to open the corresponding switch valve and exhaust the corresponding support unit until the pressure value of the corresponding support unit drops to the preset pressure threshold, and the corresponding switch valve and exhaust valve are closed.

[0068] Furthermore, the main control module 150 is also used for:

[0069] Monitor the pressure value corresponding to each support unit for a first maintenance time corresponding to a preset first pressure threshold, and when the first maintenance time reaches the preset first time threshold, open the exhaust valve, and open the switch valves corresponding to each support unit in sequence according to a preset exhaust sequence, until the pressure value corresponding to each support unit reaches a second pressure threshold; monitor the pressure value corresponding to each support unit for a second maintenance time corresponding to a preset second pressure threshold, and when the second maintenance time reaches the preset second time threshold, turn on the inflation pump, and open the switch valves corresponding to each support unit in sequence according to a preset inflation sequence, until the pressure value corresponding to each support unit reaches the first pressure threshold.

[0070] It can be understood that setting the pressure threshold corresponding to each support unit, the ventilation cycle and the ventilation sequence of each support unit's cyclic ventilation allows each support unit to perform periodic ventilation, which is beneficial to ensure that the pressure on various parts of the user's body can be released periodically, and can solve the problem of users being unable to frequently change their body position due to limb disabilities, causing discomfort caused by long-term pressure on muscle tissue.

[0071] Example 3

[0072] The embodiment of the present application proposes that the pressure acquisition module 140 includes multiple AD conversion units and pressure acquisition units corresponding to each supporting unit. Each pressure acquisition unit obtains the pressure value of the corresponding supporting unit and sends the corresponding pressure value to the corresponding AD conversion unit. The AD conversion unit converts the pressure value into an electrical signal and sends it to the main control module 150.

[0073] Furthermore, each pressure collection unit includes a collection element and an adjustable resistor, such as Figure 7 As shown, the first end of the collection element is connected to the first end of the adjustable resistor, the second end of the collection element is connected to the second end of the adjustable resistor, the third end of the collection element, the fourth end of the collection element and the fifth end of the collection element are used to connect to the corresponding AD conversion unit, and the third end of the adjustable resistor is grounded.

[0074] It can be understood that the adjustable resistor can adjust the acquisition element. For example, in PGS010S, the internal left and right bridge arm resistances are inconsistent, resulting in a large initial output voltage problem.

[0075] Furthermore, the AD conversion unit includes a voltage stabilizing circuit, an isolation circuit and an AD conversion element. The voltage stabilizing circuit is used to stabilize the working voltage provided by the power supply to the AD conversion element. The input end of the isolation circuit is connected to the output end of the AD conversion element, and the output end of the isolation circuit is connected to the main control module.

[0076] For example, an AD conversion element such as Figure 8As shown, the peripheral circuit of the AD conversion element includes a first resistor, a second resistor, a third resistor, a first transistor, a first capacitor, a second capacitor and a first inductor; one end of the first resistor is connected to the base pin of the AD conversion element, the other end of the first resistor is connected to the first end of the first transistor, the second end of the first transistor is respectively connected to one end of the first inductor and the voltage stabilizing pin of the AD conversion element, the other end of the first inductor is respectively connected to one end of the first capacitor and the power supply pin of the AD conversion element, and the other end of the first capacitor is grounded; the third end of the first transistor is respectively connected to one end of the second resistor, the voltage output pin of the AD conversion element and one end of the second capacitor, and the other end of the second capacitor is grounded; the other end of the second resistor is respectively connected to one end of the third resistor and the feedback pin of the AD conversion element, and the other end of the third resistor is connected to the ground pin of the AD conversion element.

[0077] It can be understood that the AD conversion element can be an HX7110 chip, which is a 24-bit ADC conversion chip with two sets of differential inputs. Based on the 1.25V reference voltage inside the HX7110, the output voltage of the voltage output pin of the AD conversion element is divided by the second resistor and the third resistor, and then transmitted to the feedback pin VFB for comparison with the internal reference voltage. After comparison, the control signal is output from the base pin BASE to control the first transistor to adjust the output voltage, forming a closed-loop control voltage stabilization process. Among them, the output voltage = 1.25*(R2+R3) / R3. By calculation, it can be determined that the output voltage can be about 3.3V.

[0078] Exemplary, voltage stabilization circuit such as Fig. 9 As shown, it includes a voltage stabilizing element, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a second inductor, a second transistor, a switch element, a fourth resistor, a fifth resistor and a sixth resistor.

[0079] The first end of the voltage stabilizing element is respectively connected to one end of the fourth resistor and one end of the fifth resistor, and the other end of the fifth resistor is respectively connected to the second end of the voltage stabilizing element, one end of the third capacitor, one end of the fourth capacitor, one end of the fifth capacitor, the low voltage end of the switching element and the ground; the third end of the voltage stabilizing element is respectively connected to the first end of the second transistor and one end of the sixth resistor, the second end of the second transistor is respectively connected to the power supply pin of the AD conversion element, the other end of the third capacitor, the other end of the fourth capacitor and the other end of the fourth resistor, the third end of the second transistor is respectively connected to the other end of the sixth resistor, the other end of the fifth capacitor and one end of the second inductor, and the other end of the second inductor is connected to the voltage output pin of the switching element; the voltage input pin of the switching element is respectively connected to the first power supply end and one end of the sixth capacitor, and the other end of the sixth capacitor is grounded.

[0080] It can be understood that the voltage stabilizing element can be TL431, and the switching element can be an isolated switching power supply, for example, BO505T-1W. The BO505T-1W is converted internally by a high-frequency transformer. Since there are solenoid valves, air pumps, inductors, etc. in the entire system, the opening or closing process of BO505T-1W will form a large interference in the circuit. There is also continuous noise when each switch unit is turned on, which is very unfavorable to the air pressure collection process. In order to improve the anti-interference ability of the circuit, the input power supply needs to be stabilized. The B0505T-1W module does not have the voltage stabilization capability. Therefore, the voltage stabilizing element and the second transistor in the voltage stabilization circuit are used to enable the AD conversion unit to obtain a stable working current.

[0081] Furthermore, the isolation circuit includes a communication data isolation circuit and a communication clock isolation circuit.

[0082] For example, the communication data isolation circuit is as follows Fig.10 As shown, it includes a first optical coupling element, a seventh resistor, an eighth resistor, a ninth resistor and a third transistor.

[0083] The first end of the third transistor is respectively connected to the data output pin of the AD conversion element and one end of the seventh resistor, the other end of the seventh resistor is respectively connected to the second end of the third transistor and the ground, the third end of the third transistor is connected to the first end of the first optocoupler element; the second end of the first optocoupler element is connected to one end of the eighth resistor, the other end of the eighth resistor is connected to the power supply pin of the AD conversion element, the third end of the first optocoupler element is respectively connected to the second power supply end and one end of the ninth resistor, the other end of the ninth resistor is respectively connected to the fourth end of the first optocoupler element, and the fifth end of the first optocoupler element is grounded; the fourth end of the first optocoupler element is used as a data signal output end, connected to the main control module 150.

[0084] It can be understood that the first optocoupler element effectively ensures that the digital signal output by the data output pin of the AD conversion element can be sent to the main control module 150, and the signal at the connection end between the main control module 150 and the first optocoupler element will not flow back, which can improve the anti-interference ability of the circuit.

[0085] For example, the communication clock isolation circuit is as follows: Fig.11 As shown, it includes a second optical coupling element, a tenth resistor and an eleventh resistor.

[0086] The first end of the second optocoupler element serves as a clock signal output end and is connected to the main control module 150; the second end of the second optocoupler element is connected to one end of the tenth resistor, the other end of the tenth resistor is connected to the second power supply end, the third end of the second optocoupler element is respectively connected to the power supply pin of the AD conversion element and one end of the eleventh resistor, the other end of the eleventh resistor is respectively connected to the clock output pin of the AD conversion unit and the fourth end of the second optocoupler element, and the fifth end of the second optocoupler element is grounded.

[0087] It can be understood that the second optocoupler element effectively ensures that the clock output pin of the AD conversion element always outputs a signal that can be sent to the main control module 150, and the signal at the connection end between the main control module 150 and the second optocoupler element will not flow back, which can improve the anti-interference ability of the circuit.

[0088] The present application relates to a sitting posture correction chair, which includes the sitting posture correction device described in the embodiment of the present application.

[0089] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and structure diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present invention. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in an alternative implementation, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the structure diagram and / or the flow chart, and the combination of boxes in the structure diagram and / or the flow chart, can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0090] In addition, the functional modules or units in the various embodiments of the present invention may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

[0091] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a smart phone, a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0092] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sitting posture correction device, characterized in that: The sitting posture correction device includes a partitioned seat cushion, a partitioned back cushion, an inflation module, a pressure collection module and a main control module; The partitioned seat cushion comprises a left pelvic support unit, a right pelvic support unit, a left ischial tuberosity support unit, a right ischial tuberosity support unit, a left thigh rear support unit, a right thigh rear support unit, a left thigh front support unit, a right thigh front support unit and a leg separator support unit; The partitioned cushion includes an anterior superior iliac spine support unit and a lumbar support unit; The pressure acquisition module is used to collect the pressure value of each support unit and send each pressure value to the main control module; The main control module is used to send an inflation instruction and / or an exhaust instruction to the inflation module according to the various pressure values ​​and the target pressure value in the received current or preset instruction; The inflation module is used to inflate the support unit corresponding to the inflation instruction according to the inflation instruction and / or to exhaust the support unit corresponding to the exhaust instruction according to the exhaust instruction; The inflation module includes an exhaust valve, an inflation pump, and a switch valve corresponding to each supporting unit one by one; The exhaust valve, the air pump and each switch valve are connected to the main control module; The main control module is also used for: When the pressure acquisition module detects that the pressure value corresponding to a certain support unit is lower than the preset target pressure value, an inflation instruction is sent to the switch valve corresponding to the support unit whose pressure value is lower than the target pressure value, and an opening instruction is sent to the inflation pump to inflate the corresponding support unit until the pressure value of the corresponding support unit reaches the target pressure value, and then the corresponding switch valve and inflation pump are closed; When the pressure acquisition module detects that the pressure value corresponding to a certain support unit is higher than the preset target pressure value, an exhaust instruction is sent to the switch valve corresponding to the support unit with a pressure value higher than the target pressure value, and an opening instruction is sent to the exhaust valve to exhaust the corresponding support unit until the pressure value of the corresponding support unit drops to the preset pressure threshold, and then the corresponding switch valve and exhaust valve are closed; The partitioned seat cushion includes a seat cushion raised area and a seat cushion recessed area for stabilizing the user's legs and buttocks, the seat cushion raised area includes a first seat cushion raised area for stabilizing the outer edges of the user's legs and buttocks, and a second seat cushion raised area for stabilizing the inner edges of the user's legs; The partitioned cushion includes a raised cushion area and a recessed cushion area for stabilizing the user's waist; Each support unit includes a plurality of airbags, each of which is connected by a ventilation duct, and the volume of each airbag in the seat cushion recessed area and the back cushion recessed area is smaller than the volume of each airbag in the seat cushion raised area and the back cushion raised area.

2. The sitting posture correction device according to claim 1, characterized in that: It also includes an input display module for displaying the pressure value and / or input parameters corresponding to each support unit, and for inputting the target pressure value corresponding to each support unit, the ventilation cycle and ventilation sequence of each support unit's cyclic ventilation.

3. The sitting posture correction device according to claim 1 or 2, characterized in that: The pressure acquisition module includes multiple AD conversion units and pressure acquisition units corresponding to each supporting unit. Each pressure acquisition unit obtains the pressure value of the corresponding supporting unit and sends the corresponding pressure value to the corresponding AD conversion unit. The AD conversion unit converts the pressure value into an electrical signal and sends it to the main control module.

4. The sitting posture correction device according to claim 3, characterized in that: The AD conversion unit includes a voltage stabilizing circuit and an AD conversion element. The voltage stabilizing circuit is used to stabilize the working voltage provided by the power supply to the AD conversion element.

5. The sitting posture correction device according to claim 4, characterized in that: The AD conversion unit further comprises an isolation circuit, the input end of the isolation circuit is connected to the output end of the AD conversion element, and the output end of the isolation circuit is connected to the main control module, for isolating the interference of the external circuit on the AD conversion process.

6. A sitting posture correction chair, characterized in that: The sitting posture correction chair comprises the sitting posture correction device according to any one of claims 1 to 5.

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