Intelligent protective chair and control system and working method thereof

Abstract

The invention belongs to the technical field of nursing chair equipment, and particularly relates to an intelligent protection chair and a control system and a working method thereof, and the method comprises the following steps: when a user sits on a cushion, adjusting the intelligent protection chair from a standby mode to an initial working mode; and judging whether the user keeps the same posture for a preset time length or not, if so, prompting the user to adjust, otherwise, keeping the initial working mode until the user keeps the same posture for the preset time length, and prompting the user to adjust, and the like. The invention comprehensively provides the dual-mode personalized intelligent office chair which combines active adjustment and automatic regulation and control.

Description

Technical Field

[0001] The present invention belongs to the technical field of nursing chair equipment, and in particular relates to an intelligent nursing chair and a control system and a working method thereof. Background Art

[0002] According to statistics, the average person sits for nearly nine hours a day. The world is entering an era of prolonged sitting. In China, 43% of office workers say they sit for at least eight hours a day, and 58.6% sit for more than an hour at a time, of which 39.3% sit for more than 90 minutes. People who sit for more than six hours a day have a 26.7% increased risk of developing 12 chronic diseases, and lumbar injuries are more likely to worsen. To improve user comfort and reduce the harm of prolonged sitting, various chairs with massage functions have appeared on the market.

[0003] For example, a Chinese invention patent with publication number CN108741862A discloses a sitting posture adjustment method and a sitting posture adjustment chair, wherein the method includes step S100 of acquiring a pressure signal and a video signal of a user's current sitting posture; step S200 of generating current sitting posture state information according to the pressure signal and the video signal; and step S400 of adjusting the chair posture according to the current sitting posture state information. This scheme automatically adjusts the chair posture according to the user's current sitting posture state, thereby guiding the user to use a healthy sitting posture.

[0004] However, the above solution has a relatively complex structure and requires real-time collection of user's sitting posture information, which requires a large amount of data calculation, which also leads to its high cost and is not suitable for use as an office chair with high demand.

[0005] Therefore, there is an urgent need for a low-cost intelligent office chair that can be adjusted according to the user's sitting posture. Summary of the invention

[0006] The purpose of the present invention is to provide an intelligent office chair and a control system and a working method thereof, so as to provide an intelligent office chair with low cost and strong personalization for office workers.

[0007] In order to solve the above-mentioned technical problems, the present invention specifically adopts the following technical solutions: A working method of an intelligent nursing chair comprises the following steps: S1, when the user sits on the seat cushion, the smart care chair is adjusted from the standby mode to the initial working mode, in which the angle of the seat cushion is the initial seat cushion angle, and the angle of the kneeling pad is the initial kneeling pad angle; S2, judging whether the user maintains the same posture for a preset time, if so, prompting the user to make adjustments, otherwise maintaining the initial working mode until it is judged that the user maintains the same posture for a preset time, prompting the user to make adjustments; the adjustment method includes leaving the smart nursing chair, or actively adjusting the working mode of the smart nursing chair; S3, judging whether the user makes adjustments, if the user leaves the smart care chair, adjusting the smart care chair to the standby mode, if the user actively adjusts, executing S4; if the user does not take any measures, controlling the smart care chair to automatically adjust to a preset working mode, in which the initial seat cushion angle of the seat cushion is adjusted to a first angle, and the initial kneeling cushion angle of the kneeling pad is adjusted to a standard kneeling cushion angle, the first angle is within a preset seat cushion angle adjustment range, the standard kneeling pad angle is within a preset kneeling pad angle adjustment range; the initial seat cushion angle is less than the first angle; S4, after the user actively adjusts the seat cushion, the seat cushion angle is adjusted according to the seat cushion adjustment angle in the adjustment parameters sent by the user through the user terminal, and it is determined whether the current seat cushion angle α of the smart chair after adjustment meets the preset seat cushion angle adjustment range [αmin, αmax]; if so, the current seat cushion angle α is recorded, and the preset seat cushion angle adjustment range [αmin, αmax] is updated according to the current seat cushion angle α and the preset adjustment amount △; otherwise, the current seat cushion angle α is adjusted to within the preset seat cushion angle adjustment range [αmin, αmax]; When (α-αmin) < (αmax-α), the updated preset seat cushion angle adjustment range is [αmin, αmax']; where αmax' = αmax-k1 (αmax-α), k1 is a constant less than 1; When (α-αmin) ≥ (αmax-α), the updated preset seat cushion angle adjustment range is [αmin', αmax]; where αmin'=αmin+k2(α-αmin), k2 is a constant less than 1.

[0008] As an improvement, in the preset working mode, it also includes: S301, obtaining a current first pressure value of a dangerous area near the front end of the seat cushion and a current second pressure value of a safe area near the rear end of the seat cushion, and determining whether the first pressure value is greater than the second pressure value, if so, proceeding to S302, otherwise, maintaining the kneeling pad at the standard kneeling pad angle; S302, determining whether the actual pressure difference between the first pressure value and the second pressure value is greater than a first preset pressure difference, and if so, adjusting the smart nursing chair from the standard kneeling pad angle to the second angle, otherwise, maintaining the kneeling pad at the standard kneeling pad angle; Wherein, the second angle is within the preset kneeling pad angle adjustment range.

[0009] As an improvement, step S4 further includes: After the user actively makes adjustments, the angle of the kneeling pad is adjusted according to the kneeling pad adjustment angle in the adjustment parameters sent by the user through the user terminal, and it is determined whether the current kneeling pad angle of the smart chair meets the preset kneeling pad angle adjustment range. If so, the current kneeling pad angle is recorded, and the preset kneeling pad angle adjustment range is adjusted according to the current kneeling pad angle; otherwise, the current kneeling pad angle is adjusted to within the preset kneeling pad angle adjustment range.

[0010] As an improvement, before automatically adjusting the angle of the kneeling pad, the following steps are also included: Obtaining the height of the user, and determining whether the height is within a preset height threshold range; If the height is within the preset height threshold range, the kneeling pad is adjusted to a first preset height; if the height is greater than the maximum height threshold in the preset height threshold range, the kneeling pad is adjusted to a second preset height; wherein the second preset height is lower than the first preset height; Correspondingly, when the current height of the kneeling pad is the second preset height, the second angle in step S302 is the sum of the standard kneeling pad angle and the preset angle increment.

[0011] As an improvement, in step S4, the preset seat cushion angle adjustment range [αmin, αmax] is 0°-30°.

[0012] The present invention also provides an intelligent nursing chair, comprising a base, a seat arranged on the base, and a chair back connected to the seat, wherein a seat cushion and a leg support mechanism are rotatably arranged on the seat; and further comprising: Automatic control module: configured to adjust the smart protection chair from a standby mode to an initial working mode, in which the angle of the seat cushion is an initial seat cushion angle, and the angle of the kneeling pad is an initial kneeling pad angle; when the user leaves the smart protection chair, the smart protection chair is adjusted to the standby mode; if the user does not take any measures, the smart protection chair is controlled to automatically adjust to a preset working mode, in which the initial seat cushion angle of the seat cushion is adjusted to a first angle, and the kneeling pad is adjusted from the initial kneeling pad angle to a standard kneeling pad angle, the first angle being within a preset seat cushion angle adjustment range, and the standard kneeling pad angle being within a preset kneeling pad angle adjustment range; the initial seat cushion angle is less than the first angle; and when the user actively adjusts and determines that the current seat cushion angle of the smart protection chair does not meet the preset seat cushion angle adjustment range, the current seat cushion angle is adjusted to within the preset seat cushion angle adjustment range; User posture determination module: configured to determine whether the user maintains the same posture for a preset time period; Prompt module: configured to prompt the user to make adjustments when the user maintains the same posture for a preset time; the adjustment method includes leaving the smart care chair, or actively adjusting the working mode of the smart care chair; User behavior judgment module: configured to judge whether the user makes an adjustment after prompting the user to make an adjustment; Working mode judgment module: after the user actively adjusts the seat cushion, the seat cushion angle is adjusted according to the seat cushion adjustment angle in the adjustment parameters sent by the user through the user terminal, and whether the current seat cushion angle of the smart chair after adjustment meets the preset seat cushion angle adjustment range; Working mode adjustment module: when the user actively adjusts the seat cushion and determines that the current seat cushion angle of the smart chair meets the preset seat cushion angle adjustment range, the current seat cushion angle is recorded, and the preset seat cushion angle adjustment range [αmin, αmax] is updated according to the current seat cushion angle α and the preset adjustment amount △; Among them, when (α-αmin) < (αmax-α), the updated preset seat cushion angle adjustment range is [αmin, αmax']; wherein, αmax'=αmax-k1(αmax-α), k1 is a constant less than 1; when (α-αmin) ≥ (αmax-α), the updated preset seat cushion angle adjustment range is [αmin', αmax]; wherein, αmin'=αmin+k2(α-αmin), k2 is a constant less than 1.

[0013] As an improvement, it also includes: A pressure module: configured to obtain a current first pressure value of a dangerous area near the front end of the seat cushion and a current second pressure value of a safe area near the rear end of the seat cushion, and determine whether the first pressure value is greater than the second pressure value; and when the first pressure value is greater than the second pressure value, determine whether an actual pressure difference between the first pressure value and the second pressure value is greater than a first preset pressure difference; The automatic control module is further configured to adjust the kneeling pad angle of the smart nursing chair to a second angle according to the preset kneeling pad angle adjustment range when the first pressure value is greater than the second pressure value and the actual pressure difference between the first pressure value and the second pressure value is greater than a first preset pressure difference, otherwise the kneeling pad is maintained at the standard kneeling pad angle; Wherein, the second angle and the standard kneeling pad angle are both within the preset kneeling pad angle adjustment range.

[0014] As an improvement, the working mode judgment module is further configured to adjust the angle of the kneeling pad according to the kneeling pad adjustment angle in the adjustment parameters sent by the user through the user terminal after the user actively adjusts the kneeling pad, and judge whether the current kneeling pad angle of the smart nursing chair meets the preset kneeling pad angle adjustment range; The working mode adjustment module is further configured to record the current kneeling pad angle when the user adjusts the kneeling pad angle and makes the current kneeling pad angle of the smart nursing chair conform to the preset kneeling pad angle adjustment range, and adjust the preset kneeling pad angle adjustment range according to the current kneeling pad angle; The automatic control module is also configured to adjust the current kneeling pad angle to within the preset kneeling pad angle adjustment range when the user adjusts the kneeling pad angle and the current kneeling pad angle of the smart care chair does not conform to the preset kneeling pad angle adjustment range.

[0015] As an improvement, it also includes: A height determination module is configured to obtain the height of the user and determine whether the height is within a preset height threshold range; The automatic control module is also configured to adjust the kneeling pad to a first preset height when the height is within the preset height threshold range; and to adjust the kneeling pad to a second preset height when the height is greater than a maximum height threshold in the preset height threshold range, wherein the second preset height is lower than the first preset height, and the height is greater than the maximum height threshold in the preset height threshold range.

[0016] The present invention also provides a control system for an intelligent nursing chair, comprising: a user terminal and a controller, wherein the user terminal is wirelessly connected to the controller; The controller is used to adjust the working mode of the smart nursing chair according to the working method of the smart nursing chair according to the operation of the user on the user terminal, or automatically control the working mode of the smart nursing chair according to a preset control program; The user terminal is used to receive the current working mode of the intelligent nursing chair and to provide an operation port for the user; Among them, in different working modes, there are different angles of the seat cushion and the kneeling pad, as well as different heights of the kneeling pad.

[0017] The principle and beneficial technical effect of the present invention are as follows: in view of the situation where the workstations of office workers are relatively fixed, the present application provides a dual-mode personalized intelligent office chair that combines active adjustment with automatic adjustment. On the one hand, users can make autonomous adjustments according to their own circumstances and habits. On the other hand, the automatic adjustment of the chair can be combined to correct improper operations of users, thereby preventing users from excessively adjusting the chair and causing poor sitting posture.

[0018] Specifically, after the user maintains a fixed sitting posture for too long, the user can actively adjust the angle of the chair according to the reminder, and if the user does not adjust or adjusts excessively, the chair can automatically correct it, so that the user can always maintain a healthy and scientific sitting posture; at the same time, according to the user's active adjustment, the range of automatic adjustment can be adjusted, so that during the user's long-term use of the chair, the chair can gradually set the most suitable adjustment angle for the user according to the user's feedback, avoiding problems such as high energy consumption and cumbersome operation caused by repeated adjustment of the office chair, thereby improving the user experience.

[0019] Furthermore, during the adjustment process, the angles of the seat cushion and the kneeling pad are adjusted in coordination so that no matter what sitting position the user is in, the seat can support the user well and achieve the effect of dispersing the force; for example, when the user sits in the safe area at the rear end of the seat, the kneeling pad is adjusted to an initial angle for auxiliary support; when the user sits in the dangerous area at the front end of the seat, the angle of the kneeling pad is adjusted so that the kneeling pad provides greater support for the user, thereby putting the user in a more comfortable state, while also avoiding the problem of the user's unstable center of gravity and leaning forward.

[0020] Furthermore, for users with different heights, the present application adjusts the height of the kneeling pad to change the spatial height between the kneeling pad and the seat cushion, thereby adapting to the leg lengths of different users. At the same time, different kneeling pad angles are provided for such users to further improve user comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale. Obviously, the drawings described below are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without paying creative labor.

[0022] Figure 1 A three-dimensional diagram of the intelligent nursing chair in an initial state according to an embodiment of the present invention; Figure 2 A three-dimensional diagram of the leg support mechanism of the intelligent nursing chair in the process of unfolding in accordance with an embodiment of the present invention; Figure 3 A three-dimensional diagram of another state of the leg support mechanism of the intelligent nursing chair during the unfolding process according to an embodiment of the present invention; Figure 4 It is a three-dimensional diagram of the leg support mechanism of the intelligent nursing chair in the embodiment of the present invention when it is unfolded; Figure 5 A side view of the intelligent nursing chair in an initial state according to an embodiment of the present invention; Figure 6 A side view of the leg support mechanism of the intelligent nursing chair in an embodiment of the present invention when it is unfolded; Figure 7 It is a structural schematic diagram of the base of the intelligent nursing chair in an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the connecting seat of the intelligent nursing chair in an embodiment of the present invention; Fig. 9 An exploded view of the leg support mechanism of the intelligent nursing chair in an embodiment of the present invention; Fig.10 An exploded view of the local structure of the intelligent nursing chair in an embodiment of the present invention; Fig.11 A flowchart of a working method of the intelligent nursing chair in an embodiment of the present invention; Fig.12 This is a schematic diagram of the modular structure of the intelligent nursing chair in an embodiment of the present invention; Fig.13 It is a schematic diagram of the structure of the dangerous area and the safe area of ​​the seat cushion in an embodiment of the present invention; Fig.14 is a schematic diagram of a user terminal in an embodiment of the present invention; Fig.15 A schematic diagram of working mode switching in an embodiment of the present invention; Fig.16 Schematic diagram of user sitting posture adjustment in an embodiment of the present invention.

[0023] Markings in the figure: 1. support seat; 2. connecting seat; 201. main seat body; 202. first baffle; 203. second baffle; 3. seat; 4. chair back; 5. cushion; 501. third rotating shaft; 502. lifting mechanism; 503. dangerous area; 504. safe area; 6. massage cushion; 7. leg support mechanism; 71. support member; 711. first sub-support member; 712. second sub-support member; 72. rotating member; 73. kneeling board; 74. first rotating shaft; 75. second rotating shaft; 8. armrest; 9. first direction; 10. second direction. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] Herein, the suffixes such as "module", "component" or "unit" used to represent elements are used only to facilitate the description of the present invention and have no specific meaning in themselves. Therefore, "module", "component" or "unit" can be used in a mixed manner. Herein, the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front", "back", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] In this document, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In this document, "plurality" means two or more, that is, it includes two, three, four, five, etc.

[0027] The "dangerous area" herein refers to when the seat is in the preset working mode, due to the different body shapes and sitting postures of each user, after the seat cushion is rotated to the corresponding angle, especially when the angle of the seat cushion is large (that is, the seat cushion is lifted higher), the user's center of gravity is closer to the front end of the seat cushion (that is, away from the center of gravity of the seat), and the seat cushion has an inclined angle, so the pressure is concentrated in the area near the front end of the seat cushion, which makes it easy to slip from the front end of the seat cushion or fall forward. Therefore, in the case of sitting in the dangerous area, it is necessary to make adjustments through the coordination of the kneeling pad, that is, to give the user a certain support force from the legs through the kneeling pad to prevent the user from slipping or falling forward. Accordingly, compared to the dangerous area, in the preset working mode, when the user sits in the area closer to the back of the seat cushion, that is, the area away from the front end, because the user's focus is closer to the center of gravity of the seat, the probability of slipping or falling forward is greatly reduced, but at this time the coordination of the kneeling pad is still needed to ensure its comfort, for example, see Fig.13 , the dangerous area 503 and the safe area 504 are divided in the figure.

[0028] "Standby mode" in this article means that when the user is not sitting on the smart care chair or does not need to use the smart care chair, the smart care chair will automatically enter a low-energy state, waiting for activation. In standby mode, the smart care chair will not perform any intelligent adjustment functions to save energy and reduce unnecessary operations. When the user sits on the cushion, the smart care chair will be activated from this standby mode and adjusted to the initial working mode.

[0029] The "initial working mode" in this article refers to the sitting posture that supports the user when working for a long time. At this time, the seat cushion of the smart chair is at the initial seat cushion angle, and the kneeling pad is at the initial kneeling pad angle. The initial seat cushion angle is obtained in advance through a large number of experimental investigations, and the initial kneeling pad angle is the angle when the kneeling pad is in the storage state.

[0030] The "preset working mode" in this article means that when the user works in the same posture for a long time, in order to actively intervene in the user's posture, the angle of the seat is adjusted, and / or the angle of the kneeling pad is adjusted in coordination, so that the user is in a healthy and scientific posture.

[0031] Embodiment 1 The present invention provides a smart care chair, comprising a base, a seat arranged on the base, and a chair back connected to the seat, wherein a seat cushion and a leg support mechanism are rotatably arranged on the seat, respectively; and further comprising: an automatic control module: configured to adjust the smart care chair from a standby mode to an initial working mode, wherein the angle of the seat cushion is an initial seat cushion angle, and the angle of the kneeling pad is an initial kneeling pad angle; when the user leaves the smart care chair, the smart care chair is adjusted to the standby mode; if the user does not take any measures, the smart care chair is controlled to automatically adjust to the standby mode. The present invention switches to a preset working mode, in which the initial seat cushion angle of the seat cushion is adjusted to a first angle, and the initial kneeling cushion angle of the kneeling pad is adjusted to a standard kneeling pad angle, the first angle is within a preset seat cushion angle adjustment range, and the standard kneeling pad angle is within a preset kneeling pad angle adjustment range; the initial seat cushion angle is smaller than the first angle; and when the user actively adjusts the seat cushion angle and determines that the current seat cushion angle of the smart protective chair does not meet the preset seat cushion angle adjustment range, the current seat cushion angle is adjusted to within the preset seat cushion angle adjustment range; User posture determination module: determines whether the user maintains the same posture for a preset time; Prompt module: configured to prompt the user to make adjustments when the user maintains the same posture for a preset time; the adjustment method includes leaving the smart care chair, or actively adjusting the working mode of the smart care chair; User behavior judgment module: configured to judge whether the user makes an adjustment after prompting the user to make an adjustment; Working mode judgment module: after the user actively adjusts the seat cushion, the seat cushion angle is adjusted according to the seat cushion adjustment angle in the adjustment parameters sent by the user through the user terminal, and whether the current seat cushion angle of the smart chair after adjustment meets the preset seat cushion angle adjustment range; Working mode adjustment module: when the user actively adjusts the seat cushion and determines that the current seat cushion angle of the smart chair meets the preset seat cushion angle adjustment range, the current seat cushion angle is recorded, and the preset seat cushion angle adjustment range [αmin, αmax] is updated according to the current seat cushion angle α and the preset adjustment amount △; Among them, when (α-αmin) < (αmax-α), the updated preset seat cushion angle adjustment range is [αmin, αmax']; wherein, αmax'=αmax-k1(αmax-α), k1 is a constant less than 1; when (α-αmin) ≥ (αmax-α), the updated preset seat cushion angle adjustment range is [αmin', αmax]; wherein, αmin'=αmin+k2(α-αmin), k2 is a constant less than 1.

[0032] In some embodiments, a pressure module is further included: configured to obtain a current first pressure value of a dangerous area near the front end of the seat cushion and a current second pressure value of a safe area near the rear end of the seat cushion, and determine whether the first pressure value is greater than the second pressure value; and when the first pressure value is greater than the second pressure value, determine whether an actual pressure difference between the first pressure value and the second pressure value is greater than a first preset pressure difference; The automatic control module is further configured to adjust the kneeling pad angle of the smart nursing chair to a second angle according to the preset kneeling pad angle adjustment range when the first pressure value is greater than the second pressure value and the actual pressure difference between the first pressure value and the second pressure value is greater than a first preset pressure difference, otherwise the kneeling pad is maintained at the standard kneeling pad angle; Wherein, the second angle and the standard kneeling pad angle are both within the preset kneeling pad angle adjustment range.

[0033] In some embodiments, the working mode judgment module is further configured to adjust the angle of the kneeling pad according to the kneeling pad adjustment angle in the adjustment parameters sent by the user through the user terminal after the user actively adjusts the kneeling pad, and judge whether the current kneeling pad angle of the smart nursing chair meets the preset kneeling pad angle adjustment range; The working mode adjustment module is further configured to record the current kneeling pad angle when the user adjusts the kneeling pad angle and makes the current kneeling pad angle of the smart nursing chair conform to the preset kneeling pad angle adjustment range, and adjust the preset kneeling pad angle adjustment range according to the current kneeling pad angle; The automatic control module is also configured to adjust the current kneeling pad angle to within the preset kneeling pad angle adjustment range when the user adjusts the kneeling pad angle and the current kneeling pad angle of the smart care chair does not conform to the preset kneeling pad angle adjustment range.

[0034] In some embodiments, it also includes: A height determination module is configured to obtain the height of the user and determine whether the height is within a preset height threshold range; The automatic control module is also configured to adjust the kneeling pad to a first preset height when the height is within the preset height threshold range; and to adjust the kneeling pad to a second preset height when the height is greater than a maximum height threshold in the preset height threshold range, wherein the second preset height is lower than the first preset height, and the height is greater than the maximum height threshold in the preset height threshold range.

[0035] For example, the specific structure of the above-mentioned intelligent protection chair can be found in Figure 1-Figure 10 .

[0036] Specifically, the intellectual protection chair (also known as an office chair with adjustable sitting posture) includes a base, a seat 3 arranged on the base, and a chair back 4 connected to the seat 3. A cushion 5 is rotatably arranged on the seat 3, and also includes a leg support mechanism 7.

[0037] Specifically, the leg support mechanism 7 includes a support member and two kneeling plates 73, the first end of the support member is rotatably connected to the base through a first rotating shaft 74, and rotating members 72 are rotatably arranged on both sides of the second end of the support member, and the two kneeling plates 73 are rotatably connected to the two rotating members 72 through second rotating shafts 75 respectively; wherein, the first rotating shaft 74 is arranged along the X-axis direction, and the second rotating shaft 75 is arranged along the Y-axis direction, and the rotating member 72 is parallel to the central axis of the support member, that is, the plane where the rotating member 72 is located is parallel to the plane formed by the Y-axis and the Z-axis; so that the support member can drive the rotating member 72 and the kneeling plate 73 to rotate around the base along the first direction 9, the rotating member 72 can drive the kneeling plate 73 to rotate around the support member along the first direction 9, and the kneeling plate 73 can rotate around the rotating member 72 along the second direction 10.

[0038] In some embodiments, the kneeling board 73 is provided with a soft cushion.

[0039] Among them, the X-axis and Y-axis directions can refer to Figure 1 , that is, the X-axis direction is the width direction of the smart care chair, the Y-axis direction is the length direction of the smart care chair, and the Z-axis direction is the height direction of the smart care chair; the first direction 9 and the second direction 10 can be seen Figure 3 That is, the first direction 9 is parallel to a first plane formed by the Y axis and the Z axis, and the second direction 10 is parallel to a second plane formed by the X axis and the Z axis.

[0040] It should be noted that when the support member and / or the rotating member 72 rotates, the direction of the second rotating shaft 75 may change, but the rotating member 72 and the second rotating shaft 75 are always parallel to the first plane, that is, when the support member and / or the rotating member 72 rotates, the Y-axis direction also changes accordingly.

[0041] In some embodiments, the base includes a support base 1 and a connecting base 2, the two ends of the connecting base 2 are respectively fixedly connected to the support base 1 and the seat 3, and the connecting base 2 is provided with a receiving groove for accommodating the leg support mechanism 7. Figure 7 The base is H-shaped, a mounting hole is provided at the center of the support base 1, and the connecting base 2 is connected to the support base 1 through the mounting hole.

[0042] In some embodiments, the connecting seat 2 includes a main seat body 201, and a first baffle 202 and a second baffle 203 symmetrically arranged on the two side walls of the main seat body 201, and an installation space is arranged inside the main seat body 201; the first baffle 202, the second baffle 203 and the main seat body 201 are combined to form the receiving groove, the shape of the receiving groove is the same as the shape of the support member, and the size of the receiving groove (mainly the width) is greater than the width of the support member, so that the support member can be completely embedded in the receiving groove, and at the same time, the kneeling board 73 is parallel to the first baffle 202 and the second baffle 203 when folded, so that when the support member is embedded in the receiving groove, the kneeling board 73 is located in the receiving groove and fits with the baffle.

[0043] In some embodiments, the first rotating shaft 74 is installed at the top of the receiving groove (ie, the end close to the seat 3).

[0044] In some embodiments, a third rotating shaft 501 is provided at the front end of the seat cushion 5 along the X-axis direction, and a lifting mechanism 502 is provided at the rear end of the seat cushion 5; when the lifting mechanism 502 drives the rear end of the seat cushion 5 to rise and fall, the front end of the seat cushion 5 rotates around the base along the first direction 9 to change the inclination angle of the seat cushion 5.

[0045] In some embodiments, the lifting mechanism 502 includes a telescopic rod and a driving device for driving the telescopic rod to extend and retract, one end of the telescopic rod is fixedly connected to the seat 3, and the other end is fixedly connected to the cushion 5. The telescopic rod can be a hydraulic rod, and the driving device can be a motor, which is installed in the installation space of the main seat body 201 to reduce the volume of the device.

[0046] In some specific embodiments, the third rotating shaft 501 is arranged at the front end of the seat 3, and the telescopic rod is arranged at the rear end of the seat 3. When the telescopic rod is extended, the rear end of the seat cushion 5 is lifted, so that the user leans forward to adjust the user's sitting posture.

[0047] In some embodiments, see Figure 6, the acute angle range between the plane where the seat cushion 5 is located and the horizontal plane is α (preferably 0°-30°), wherein, when the telescopic rod is retracted to the maximum limit, the acute angle between the plane where the seat 3 is located and the horizontal plane is 0°, and when the telescopic rod is extended to the maximum limit, the acute angle between the plane where the seat 3 is located and the horizontal plane is 30°; when the user sits on the seat cushion 5, the leg support mechanism 7 is unfolded by the first rotating shaft 74, the rotating member 72 and the second rotating shaft 75, and the acute angle between the extension line of the plane where the kneeling board is located and the horizontal plane is β (preferably 15°-30°). Through the above angle limitation, when the user's legs are placed on the kneeling pad, the user's leg bending angle is 60°-75°.

[0048] In some embodiments, a massage cushion 6 is provided on the chair back 4 , and when a user sits on the seat cushion 5 , the massage cushion 6 corresponds to the back of the user.

[0049] In some embodiments, see Fig. 9 The support member 71 is divided into a first sub-support member 711 and a second sub-support member 712 from the first end to the second end. The acute angle between the first sub-support member 711 and the horizontal direction is smaller than the acute angle between the second sub-support member 712 and the horizontal direction, so as to better adapt to the curve of the human leg.

[0050] In some embodiments, see Fig.10 Armrests 8 are provided on both sides of the seat 3 .

[0051] In some embodiments, the intelligent nursing chair is provided with a switch button for raising and lowering the lifting mechanism and a switch button for the leg supporting mechanism. In some specific embodiments, the switch button can be provided on the armrest.

[0052] Embodiment 2 See also Fig.11 The present invention also provides a working method of the intelligent care chair, comprising the steps of: S1, when the user sits on the seat cushion, the smart care chair is adjusted from the standby mode to the initial working mode, in which the angle of the seat cushion is the initial seat cushion angle, and the angle of the kneeling pad is the initial kneeling pad angle; S2, judging whether the user maintains the same posture for a preset time, if so, prompting the user to make adjustments, otherwise maintaining the initial working mode until it is judged that the user maintains the same posture for a preset time, prompting the user to make adjustments; the adjustment method includes leaving the smart nursing chair, or actively adjusting the working mode of the smart nursing chair; Among them, in some embodiments, a method for determining whether the user maintains the same posture for a preset time period includes: respectively obtaining a first pressure value of a safe area of ​​the seat cushion and a second pressure value of a dangerous area of ​​the seat cushion, and determining whether, before reaching the preset time period, there is at least one period in which a change value of the first pressure value and the second pressure value is greater than a preset pressure change value; if so, it is determined that the user has changed his posture; otherwise, it is determined that the user has maintained the same posture; in other embodiments, the user's posture is captured in real time by an image acquisition device to determine whether the user maintains the same posture; adjusting the working mode of the smart protective chair includes adjusting the angle of the seat cushion.

[0053] S3, judging whether the user makes any adjustment, if the user leaves the smart care chair, adjusting the smart care chair to the standby mode, if the user actively makes any adjustment, executing S4; if the user does not take any measures, controlling the smart care chair to automatically adjust to the preset working mode (see Fig.15 , an example of working mode adjustment is given in the figure), in the preset working mode, the initial seat cushion angle of the seat cushion is adjusted to a first angle based on a preset seat cushion angle adjustment range, and the initial kneeling pad angle of the kneeling pad is adjusted to a standard kneeling pad angle, the standard kneeling pad angle is within the preset kneeling pad angle adjustment range, and the first angle is within the preset seat cushion angle adjustment range; the initial seat cushion angle is less than the first angle; When judging whether the user has left the smart chair, the judgment can be made by judging the comprehensive pressure on the cushion. For example, when the pressure on the cushion disappears, it means that the user has left the cushion. For another example, when the pressure on the cushion decreases significantly, it means that the user has left the cushion but placed other items on the cushion. For another example, when the pressure on the cushion decreases slightly, it means that the user may have adjusted his posture but did not leave the cushion. Not taking any measures means that the user has neither left the cushion nor adjusted the working mode of the cushion.

[0054] S4, after the user actively adjusts, according to the user through the user terminal (such as mobile phone APP, see Fig.14, an example of a user terminal is given in the figure) and the seat cushion adjustment angle in the adjustment parameters sent is adjusted, and it is determined whether the current seat cushion angle α of the intelligent protective chair after adjustment meets the preset seat cushion angle adjustment range. If so, the current seat cushion angle α is recorded, and the preset seat cushion angle adjustment range [αmin, αmax] is updated according to the current seat cushion angle α and the preset adjustment amount △; otherwise, the current seat cushion angle α is adjusted to within the preset seat cushion angle adjustment range; when (α-αmin) < (αmax-α), the updated preset seat cushion angle adjustment range is [αmin, αmax']; wherein, αmax'=αmax-k1(αmax-α), k1 is a constant less than 1; when (α-αmin) ≥ (αmax-α), the updated preset seat cushion angle adjustment range is [αmin', αmax]; wherein, αmin'=αmin+k2(α-αmin), k2 is a constant less than 1.

[0055] In some embodiments, the preset seat cushion angle adjustment range and the preset kneeling pad angle adjustment range are obtained in advance based on a large number of tests (for example, obtained during the product factory testing phase) and exist in the initial working mode of the database. Preferably, the preset seat cushion angle range and the preset kneeling pad angle range are universal angle ranges suitable for most people.

[0056] The preset adjustment amount is also obtained in advance based on a large number of tests (for example, obtained during the product factory testing phase), which provides the user with a reasonable optional angle adjustment range based on the difference between the current seat cushion angle and the maximum and minimum values ​​of the angle adjustment range.

[0057] In some embodiments, in the preset working mode, step S3 further includes: controlling the smart nursing chair to automatically adjust the angle of the kneeling pad to within a preset kneeling pad angle adjustment range, and the specific steps include: S301, obtaining a current first pressure value of a dangerous area near the front end of the seat cushion and a current second pressure value of a safe area near the rear end of the seat cushion, and determining whether the first pressure value is greater than the second pressure value, if so, proceeding to S302, otherwise, maintaining the kneeling pad at the standard kneeling pad angle; S302, determining whether the actual pressure difference between the first pressure value and the second pressure value is greater than a first preset pressure difference, and if so, adjusting the smart nursing chair from the standard kneeling pad angle to the second angle, otherwise, maintaining the kneeling pad at the standard kneeling pad angle; Wherein, the second angle is within the preset kneeling pad angle adjustment range.

[0058] By judging the user's center of gravity distribution, different kneeling pad support angles are provided for the user, so that the kneeling pad can better support the user according to the user's sitting posture, achieve better waist pressure relief, and improve user experience. Fig.16 The figure shows the changes in the user's posture when the chair is adjusted from the initial working mode to the preset working mode. When the user places his legs on the kneeling pad, the extension line of the user's legs is parallel to the plane of the kneeling pad. It can be seen from the figure that by adjusting the working mode of the chair, the sitting posture can be adjusted, the user's center of gravity can be changed, and the pressure on the user's waist can be relieved.

[0059] The standard kneeling pad angle is obtained in advance based on a large number of tests (for example, obtained during the product factory testing phase), and is a relatively comfortable angle for most people. Of course, users can also set it themselves through the user terminal.

[0060] In some embodiments, the second angle is greater than the standard kneeling pad angle, wherein the angle of the kneeling pad refers to the angle β between the plane where the kneeling pad is located and the horizontal plane.

[0061] In some embodiments, step S4 further includes: After the user actively makes adjustments, the angle of the kneeling pad is adjusted according to the kneeling pad adjustment angle in the adjustment parameters sent by the user through the user terminal, and it is determined whether the current kneeling pad angle of the smart chair meets the preset kneeling pad angle adjustment range. If so, the current kneeling pad angle is recorded, and the preset kneeling pad angle adjustment range is adjusted according to the current kneeling pad angle; otherwise, the current kneeling pad angle is adjusted to within the preset kneeling pad angle adjustment range.

[0062] In some embodiments, when the preset kneeling pad angle adjustment range is adjusted according to the current kneeling pad angle, the kneeling pad angle adjustment range [βmin, βmax] can be updated according to the current kneeling pad angle β and the preset kneeling pad adjustment amount △'. Specifically, when (β-βmin) < (βmax-β), the updated preset seat cushion angle adjustment range is [βmin, βmax']; wherein βmax'=βmax-k3(βmax-β), k3 is a constant less than 1; When (β-βmin) ≥ (βmax-β), the updated preset seat cushion angle adjustment range is [βmin', βmax]; wherein, βmin'=βmin+k4(β-βmin), k4 is a constant less than 1.

[0063] In some embodiments, before automatically adjusting the angle of the kneeling pad, the method further includes the following steps: Obtaining the height of the user, and determining whether the height is within a preset height threshold range; If the height is within the preset height threshold range, adjusting the kneeling pad to a first preset height; If the height is greater than the maximum height threshold in the preset height threshold range; adjust the kneeling pad to a second preset height; wherein the second preset height is lower than the first preset height.

[0064] Correspondingly, when the current height of the kneeling pad is the second preset height, the second angle in step S302 is the sum of the standard kneeling pad angle and the preset angle increment, that is, the second angle is greater than the standard kneeling pad angle. By adjusting the rotation angle of the support, the kneeling pad can be adjusted to different heights (for example, when the user's height is higher than the maximum height threshold, the rotation angle of the support is reduced to increase the space between the kneeling pad and the seat cushion), thereby adapting to users with different leg lengths and improving user experience.

[0065] Among them, in the process of adjusting the seat cushion angle and the kneeling pad angle, the seat cushion and the kneeling pad angle are adjusted synchronously, and before the seat cushion angle reaches the first angle, the kneeling pad first reaches a preset angle (the second angle or the standard kneeling pad angle). After the kneeling pad reaches the preset angle, it will rest against the front of the user's knees. At this time, the seat cushion angle continues to be adjusted. In this process, the user's posture will change with the seat cushion, which will eventually make the user's legs kneel on the kneeling pad, achieving the purpose of dispersing the force.

[0066] In some specific embodiments, based on the structure of the intelligent nursing chair in Embodiment 1, the height of the kneeling pad can be adjusted by adjusting the rotation angle of the support member. For example, when the rotation angle of the support member is increased, the height of the kneeling pad is also increased accordingly; the angle of the kneeling pad can be adjusted in coordination with the support member and the rotating member. After adjusting the height of the kneeling pad according to the height of the user, the angle of the kneeling pad can be made to be within the preset kneeling pad angle range by rotating the rotating member.

[0067] In view of the situation where the workstations of office workers are relatively fixed, the present application provides a dual-mode personalized smart office chair that combines active adjustment with automatic adjustment. On the one hand, users can make independent adjustments according to their own circumstances and habits. On the other hand, the automatic adjustment of the chair can be combined to correct the user's improper operation, preventing the user from excessively adjusting the chair and causing poor sitting posture.

[0068] Specifically, after the user maintains a fixed sitting posture for too long, the user can actively adjust the angle of the chair according to the reminder, and if the user does not adjust or adjusts excessively, the chair can automatically correct it, so that the user can always maintain a healthy and scientific sitting posture; at the same time, according to the user's active adjustment, the range of automatic adjustment can be adjusted, so that during the user's long-term use of the chair, the chair can gradually set the most suitable adjustment angle for the user according to the user's feedback, avoiding problems such as high energy consumption and cumbersome operation caused by repeated adjustment of the office chair, thereby improving the user experience.

[0069] Among them, the healthy and scientific sitting posture refers to the one obtained through a large number of experiments and studies in advance based on the principles of ergonomics and human anatomy. It is suitable for most people (such as people with average height in the country) and can minimize the pressure on various parts of the body, avoid musculoskeletal injuries, and maintain a healthy sitting posture.

[0070] Furthermore, during the adjustment process, the angles of the seat cushion and the kneeling pad are adjusted in coordination so that no matter what sitting position the user is in, the seat can support the user well and achieve the effect of dispersing the force; for example, when the user sits in the safe area at the rear end of the seat, the kneeling pad is adjusted to an initial angle for auxiliary support; when the user sits in the dangerous area at the front end of the seat, the angle of the kneeling pad is adjusted (increased) so that the kneeling pad can provide the user with greater support, thereby putting the user in a more comfortable state, while also avoiding the problem of the user's unstable center of gravity and leaning forward.

[0071] Furthermore, for users with different heights, the present application adjusts the rotation angle of the support member to adapt to the leg lengths of different users, and at the same time provides different kneeling pad angles for such users, thereby further improving user comfort.

[0072] Embodiment 3 The present invention also provides a control system for an intelligent nursing chair, comprising: a user terminal and a controller, wherein the user terminal is wirelessly connected to the controller; The controller is used to adjust the working mode of the smart nursing chair according to the method in the second embodiment according to the operation of the user on the user terminal, or automatically control the working mode of the smart nursing chair according to a preset control program; The user terminal is used to receive the current working mode of the intelligent nursing chair and to provide an operation port for the user; Wherein, in different working modes, there are corresponding different angles of the seat cushion and the kneeling pad, and different heights of the kneeling pad (ie, different rotation angles of the support member).

[0073] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0074] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. A working method of an intelligent nursing chair, characterized in that: Includes steps: S1, when the user sits on the seat cushion, the smart care chair is adjusted from the standby mode to the initial working mode, in which the angle of the seat cushion is the initial seat cushion angle, and the angle of the kneeling pad is the initial kneeling pad angle; S2, judging whether the user maintains the same posture for a preset time, if so, prompting the user to make adjustments, otherwise maintaining the initial working mode until it is judged that the user maintains the same posture for a preset time, prompting the user to make adjustments; the adjustment method includes leaving the smart nursing chair, or actively adjusting the working mode of the smart nursing chair; S3, judging whether the user makes adjustments, if the user leaves the smart care chair, adjusting the smart care chair to the standby mode, if the user actively makes adjustments, executing S4; if the user does not take any measures, controlling the smart care chair to automatically adjust to a preset working mode, in which the initial seat cushion angle of the seat cushion is adjusted to a first angle, and the initial kneeling pad angle of the kneeling pad is adjusted to a standard kneeling pad angle, the first angle is within a preset seat cushion angle adjustment range, and the standard kneeling pad angle is within a preset kneeling pad angle adjustment range; The initial seat cushion angle is smaller than the first angle; S4, after the user actively adjusts the seat cushion, the seat cushion angle is adjusted according to the seat cushion adjustment angle in the adjustment parameter sent by the user through the user terminal, and it is determined whether the current seat cushion angle α of the smart chair after adjustment meets the preset seat cushion angle adjustment range [αmin, αmax], if so, the current seat cushion angle α is recorded, and the preset seat cushion angle adjustment range [αmin, αmax] is updated according to the current seat cushion angle α and the preset adjustment amount △; Otherwise, the current seat cushion angle α is adjusted to within the preset seat cushion angle adjustment range [αmin, αmax]; When (α-αmin) < (αmax-α), the updated preset seat cushion angle adjustment range is [αmin, αmax']; where αmax' = αmax-k1 (αmax-α), k1 is a constant less than 1; When (α-αmin) ≥ (αmax-α), the updated preset seat cushion angle adjustment range is [αmin', αmax]; where αmin'=αmin+k2(α-αmin), k2 is a constant less than 1.

2. The working method of the mental health chair according to claim 1, characterized in that: In the preset working mode, it also includes: S301, obtaining a current first pressure value of a dangerous area near the front end of the seat cushion and a current second pressure value of a safe area near the rear end of the seat cushion, and determining whether the first pressure value is greater than the second pressure value, if so, proceeding to S302, otherwise, maintaining the kneeling pad at the standard kneeling pad angle; S302, determining whether the actual pressure difference between the first pressure value and the second pressure value is greater than a first preset pressure difference, and if so, adjusting the smart nursing chair from the standard kneeling pad angle to the second angle, otherwise, maintaining the kneeling pad at the standard kneeling pad angle; Wherein, the second angle is within the preset kneeling pad angle adjustment range.

3. The working method of the intellectual care chair according to claim 1, characterized in that: Step S4 also includes: After the user actively makes adjustments, the angle of the kneeling pad is adjusted according to the kneeling pad adjustment angle in the adjustment parameters sent by the user through the user terminal, and it is determined whether the current kneeling pad angle of the smart chair meets the preset kneeling pad angle adjustment range. If so, the current kneeling pad angle is recorded, and the preset kneeling pad angle adjustment range is adjusted according to the current kneeling pad angle; otherwise, the current kneeling pad angle is adjusted to within the preset kneeling pad angle adjustment range.

4. The working method of the mental health chair according to claim 2, characterized in that: Before automatically adjusting the kneeling pad angle, the following steps are also included: Obtaining the height of the user, and determining whether the height is within a preset height threshold range; If the height is within the preset height threshold range, adjusting the kneeling pad to a first preset height; If the height is greater than the maximum height threshold in the preset height threshold range; adjusting the kneeling pad to a second preset height; wherein the second preset height is lower than the first preset height; Correspondingly, when the current height of the kneeling pad is the second preset height, the second angle in step S302 is the sum of the standard kneeling pad angle and the preset angle increment.

5. The working method of the mental health chair according to claim 2, characterized in that: In step S4, the preset seat cushion angle adjustment range [αmin, αmax] is 0°-30°.

6. An intelligent nursing chair, characterized in that: It comprises a base, a seat arranged on the base, and a chair back connected to the seat, wherein a seat cushion and a leg support mechanism are rotatably arranged on the seat; and further comprises: Automatic control module: configured to adjust the smart protection chair from a standby mode to an initial working mode, in which the angle of the seat cushion is an initial seat cushion angle, and the angle of the kneeling pad is an initial kneeling pad angle; when the user leaves the smart protection chair, the smart protection chair is adjusted to the standby mode; if the user does not take any measures, the smart protection chair is controlled to automatically adjust to a preset working mode, in which the initial seat cushion angle of the seat cushion is adjusted to a first angle, and the kneeling pad is adjusted from the initial kneeling pad angle to a standard kneeling pad angle, the first angle being within a preset seat cushion angle adjustment range, and the standard kneeling pad angle being within a preset kneeling pad angle adjustment range; the initial seat cushion angle is less than the first angle; and when the user actively adjusts and determines that the current seat cushion angle of the smart protection chair does not meet the preset seat cushion angle adjustment range, the current seat cushion angle is adjusted to within the preset seat cushion angle adjustment range; User posture determination module: configured to determine whether the user maintains the same posture for a preset time period; Prompt module: configured to prompt the user to make adjustments when the user maintains the same posture for a preset time; the adjustment method includes leaving the smart care chair, or actively adjusting the working mode of the smart care chair; User behavior judgment module: configured to judge whether the user makes an adjustment after prompting the user to make an adjustment; Working mode judgment module: after the user actively adjusts the seat cushion, the seat cushion angle is adjusted according to the seat cushion adjustment angle in the adjustment parameters sent by the user through the user terminal, and whether the current seat cushion angle of the smart chair after adjustment meets the preset seat cushion angle adjustment range; Working mode adjustment module: when the user actively adjusts the seat cushion and determines that the current seat cushion angle of the smart chair meets the preset seat cushion angle adjustment range, the current seat cushion angle is recorded, and the preset seat cushion angle adjustment range [αmin, αmax] is updated according to the current seat cushion angle α and the preset adjustment amount △; Among them, when (α-αmin) < (αmax-α), the updated preset seat cushion angle adjustment range is [αmin, αmax']; wherein, αmax'=αmax-k1(αmax-α), k1 is a constant less than 1; when (α-αmin) ≥ (αmax-α), the updated preset seat cushion angle adjustment range is [αmin', αmax]; wherein, αmin'=αmin+k2(α-αmin), k2 is a constant less than 1.

7. The intellectual care chair according to claim 6, characterized in that: Also includes: A pressure module: configured to obtain a current first pressure value of a dangerous area near the front end of the seat cushion and a current second pressure value of a safe area near the rear end of the seat cushion, and determine whether the first pressure value is greater than the second pressure value; and when the first pressure value is greater than the second pressure value, determine whether an actual pressure difference between the first pressure value and the second pressure value is greater than a first preset pressure difference; The automatic control module is further configured to adjust the kneeling pad angle of the smart nursing chair to a second angle according to the preset kneeling pad angle adjustment range when the first pressure value is greater than the second pressure value and the actual pressure difference between the first pressure value and the second pressure value is greater than a first preset pressure difference, otherwise the kneeling pad is maintained at the standard kneeling pad angle; Wherein, the second angle and the standard kneeling pad angle are both within the preset kneeling pad angle adjustment range.

8. The intellectual care chair according to claim 6, characterized in that: The working mode determination module is further configured to adjust the angle of the kneeling pad according to the kneeling pad adjustment angle in the adjustment parameters sent by the user through the user terminal after the user actively adjusts the kneeling pad, and determine whether the current kneeling pad angle of the smart care chair meets the preset kneeling pad angle adjustment range; The working mode adjustment module is further configured to record the current kneeling pad angle when the user adjusts the kneeling pad angle and makes the current kneeling pad angle of the smart nursing chair conform to the preset kneeling pad angle adjustment range, and adjust the preset kneeling pad angle adjustment range according to the current kneeling pad angle; The automatic control module is also configured to adjust the current kneeling pad angle to within the preset kneeling pad angle adjustment range when the user adjusts the kneeling pad angle and the current kneeling pad angle of the smart care chair does not conform to the preset kneeling pad angle adjustment range.

9. The intellectual care chair according to claim 7, characterized in that: Also includes: A height determination module is configured to obtain the height of the user and determine whether the height is within a preset height threshold range; The automatic control module is further configured to adjust the kneeling pad to a first preset height when the height is within the preset height threshold range; When the height is greater than a maximum height threshold in the preset height threshold range, the kneeling pad is adjusted to a second preset height, wherein the second preset height is lower than the first preset height, and the height is greater than a maximum height threshold in the preset height threshold range.

10. A control system for an intelligent nursing chair, characterized in that: include: A user terminal and a controller, wherein the user terminal is wirelessly connected to the controller; Wherein, the controller is used to adjust the working mode of the smart nursing chair according to the method described in any one of claims 1 to 5 according to the operation of the user on the user terminal, or automatically control the working mode of the smart nursing chair according to a pre-set control program; The user terminal is used to receive the current working mode of the intelligent nursing chair and to provide an operation port for the user; Among them, in different working modes, there are different angles of the seat cushion and the kneeling pad, as well as different heights of the kneeling pad.

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