Seat

Abstract

The invention discloses a seat, and belongs to the technical field of seats. The seat comprises a seat back structure; the pressure sensor is arranged on the chair back structure; the waist support module comprises at least one air bag assembly, and the waist support module is arranged on the chair back structure; the controller is connected with the pressure sensor and the waist support module, and is used for determining a corresponding predicted breathing state of a target object in a next time period of a target time period based on pressure information, collected by the pressure sensor, of the target object on the seat in the target time period, and determining the corresponding predicted breathing state of the target object in the next time period of the target time period based on the predicted breathing state. And controlling the inflation volume of the at least one airbag assembly in the next time period. According to the seat, the supporting force of the waist supporting module can be dynamically adjusted along with the breathing rhythm of the user, the fitting degree of the waist supporting module and the waist of the user is improved, gapless supporting in the whole breathing period is achieved, and the use experience of the user is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of seats, and particularly relates to a seat. BACKGROUND

[0002] The lumbar support is a core supporting component of an ergonomic chair, which is used to fit the human lumbar curve, disperse the waist pressure, relieve the fatigue of long sitting, and is widely applied to office chairs, automobile seats and home leisure chairs and the like. The seat in the related art is mostly provided with a fixed lumbar support, which adopts a rigid or elastic fixed structure, the supporting force of which is not adjustable, and cannot be self-adapted to different users, so that the use experience of the user is poor. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the prior art. To this end, the present application provides a seat, so that the supporting force of the lumbar support module can be dynamically adjusted according to the breathing rhythm of the user, improving the fit of the lumbar support module and the waist of the user, realizing full-breathing-period gapless support, and improving the use experience of the user.

[0004] In a first aspect, the present application provides a seat, comprising: a backrest structure; a pressure sensor arranged on the backrest structure; a lumbar support module comprising at least one air bag assembly, the lumbar support module being arranged on the backrest structure; a controller connected with the pressure sensor and the lumbar support module respectively, configured to determine a predicted breathing state of a target object on the seat in a next time period of a target time period based on pressure information of the target object in the target time period collected by the pressure sensor, and control the inflation amount of the at least one air bag assembly in the next time period based on the predicted breathing state.

[0005] According to the seat provided by the embodiments of the present application, the inflation amount of the air bag assembly is dynamically adjusted by identifying the breathing rhythm of the user, so that the supporting force of the lumbar support module can be dynamically adjusted according to the breathing rhythm of the user, improving the fit of the lumbar support module and the waist of the user, realizing full-breathing-period gapless support, and improving the use experience of the user.

[0006] The seat of one embodiment of the present application, the determination of the predicted breathing state of the target object in the next time period of the target time period based on the pressure information of the target object in the target time period collected by the pressure sensor comprises: acquiring the change of the pressure information in the target time period based on the pressure information of the target object in the target time period; determining the predicted breathing state based on the change.

[0007] The seat of one embodiment of the present application, the determination of the predicted respiratory state based on the change includes: In the case where the change includes, in the target period, it is detected that the pressure information is in an upward trend, and the pressure information amplitude from the beginning to the end of the target period is greater than the first pressure threshold, the predicted respiratory state is determined to be the inspiration state.

[0008] The control method of the seat of one embodiment of the present application, the determination of the predicted respiratory state based on the change includes: In the case where the change includes, in the target period, it is detected that the pressure information is in a downward trend, and the pressure information amplitude from the beginning to the end of the target period is greater than the second pressure threshold, the respiratory state of the target object is determined to be the expiration state.

[0009] The seat of one embodiment of the present application, the control of the inflation amount of the at least one air bag assembly in the next period based on the predicted respiratory state includes: In the case where the predicted respiratory state is the inspiration state, the inflation amount of each air bag assembly in the next period is controlled to decrease by a first target inflation amount; In the case where the predicted respiratory state is the expiration state, the inflation amount of each air bag assembly in the next period is controlled to increase by a second target inflation amount.

[0010] The seat of one embodiment of the present application, the first target inflation amount increases with the increase of the pressure information amplitude corresponding to the target period, and the first target inflation amount decreases with the decrease of the pressure information amplitude corresponding to the target period; the second target inflation amount increases with the increase of the pressure information amplitude corresponding to the target period, and the second target inflation amount decreases with the decrease of the pressure information amplitude corresponding to the target period.

[0011] The seat of one embodiment of the present application, the controller is further used for: Obtaining the respiratory frequency of the target object, adjusting the timing of outputting the control instruction; the control instruction is used to control the inflation amount of the at least one air bag assembly in the next period.

[0012] The seat of one embodiment of the present application, the waist support module includes: The air pump is used to increase the inflation amount of the at least one air bag assembly in the next period in the case where the control instruction output by the controller is received.

[0013] The seat of one embodiment of the present application, the waist support module includes: a pressure relief module, configured to reduce the inflation amount of the at least one airbag assembly in the next time period upon receiving the control instruction output by the controller.

[0014] The seat of one embodiment of the present application further comprises: an interaction module, connected with the controller, configured to receive a first input of a user, the first input being used for the controller to adjust the working mode of the seat.

[0015] The one or more technical solutions in the embodiments of the present application at least have one of the following technical effects: By identifying the breathing rhythm of the user, the inflation amount of the airbag assembly is dynamically adjusted, so that the supporting force of the lumbar support module is dynamically adjusted, so that the supporting force of the lumbar support module can be dynamically adjusted according to the breathing rhythm of the user, the fit of the lumbar support module and the waist of the user is improved, full-breathing-cycle gapless support is achieved, and the user's use experience is improved.

[0016] Additional aspects and advantages of the present application will be in part apparent and in part pointed out below in the description of embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of embodiments, taken in conjunction with the accompanying drawings in which: Figure 1 is one of the flowcharts of the control method of the seat provided by the embodiments of the present application; Figure 2 is a schematic diagram of the module connection relationship of the seat provided by the embodiments of the present application; Figure 3 is the second flowchart of the control method of the seat provided by the embodiments of the present application. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described clearly and in detail below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0019] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0020] The seat provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0021] like Figure 2 As shown, the seat includes: a backrest structure, a pressure sensor, a lumbar support module, and a controller.

[0022] In this embodiment, the seat may include a seat body and a backrest structure, which may be the supporting body of the seat. The seat body and the backrest structure may be made of high-strength aluminum alloy as the internal frame and covered with an ABS flame-retardant shell.

[0023] The lumbar region of the chair back structure is configured to fit the curve of the human lumbar spine. The curvature radius of the lumbar region can be set within a user-defined range, for example, it can be set between 150-180mm, such as 150mm, 160mm or 180mm, or other values, which are not limited in this application.

[0024] In some embodiments, the seat may include a breathing sensing module.

[0025] In some embodiments, the respiratory sensing module may include a pressure sensor.

[0026] The pressure sensor is located in the chair back structure. The pressure sensor can be a miniature pressure sensor with a detection range of 0-50N, an accuracy of ±0.2N, and a sampling frequency of 10Hz.

[0027] The number of pressure sensors can be one or more. For example, a pressure sensor can be set in the middle area of ​​the waist, or a pressure sensor can be set in the left waist and the right waist respectively to collect the pressure information of the left waist and the right waist respectively, and control the inflation amount of the airbag component corresponding to the waist on the detected side when the pressure information of one side of the waist meets the adjustment conditions.

[0028] The pressure sensor can be attached to the inner side surface of the chair back structure by a detachable connection such as a magic tape. The installation position can be configured to correspond to the abdominal region of the human body (e.g., the navel level position) so as to fit the abdominal surface when the user sits. For example, the pressure sensor can be arranged at a position 10-15 cm above the waist support module.

[0029] The waist support module is arranged on the chair back structure. For example, a mounting groove can be arranged on the chair back structure for fixing the waist support module. The waist support module can be installed at a position corresponding to the L3-L5 segment of the human lumbar spine.

[0030] The waist support module includes at least one air bag assembly. The number of air bag assemblies can be one or more. For example, one air bag assembly can be arranged to cover the fixed region of the human lumbar spine, or multiple symmetrically distributed air bag assemblies can be arranged. The present application is not limited in this regard.

[0031] For example, two symmetrically distributed arc-shaped air bag assemblies can be arranged. The material is medical-grade TPU. The inflation volume of a single air bag can be adjusted in the range of 5-20 mL.

[0032] For example, the waist support module can include a honeycomb-shaped multi-cavity air bag to achieve independent adjustment of different zones to adapt to the expansion amplitude difference of different regions of the waist.

[0033] A breathable protective layer can be arranged on the outer side of the air bag assembly. The breathable protective layer can be a cotton breathable fabric with a thickness of about 5 mm, such as 4 mm or 6 mm, etc. The breathable protective layer can be wrapped by a buckle or the like to protect the air bag assembly and increase the comfort of the user.

[0034] Memory foam can be arranged on the outer side of the air bag assembly to enhance support comfort and improve air bag durability.

[0035] The controller can be installed on the inner lower region of the chair back structure, or can also be arranged at other positions. The present application is not limited in this regard.

[0036] The controller is connected to the pressure sensor and the waist support module, respectively. For example, the controller can be electrically connected to the pressure sensor through a data transmission line to receive pressure information. The controller can also be electrically connected to the waist support module through a wire.

[0037] As shown in Figure 1 The controller can be used to execute steps 110 and 120.

[0038] In step 110, based on the pressure information of the target object on the seat collected by the pressure sensor in the target period, the corresponding predicted breathing state of the target object in the next period of the target period is determined. In this step, the target object is a user sitting on the seat.

[0039] The target period is a recent time window selected by the controller for real-time analysis. The target period can be a very short period in the inhalation / exhalation phase of the target object, for example, the window can be a sliding window lasting 50-90 ms, or a medium-length time window, for example, 0.5-2 s, or other sizes of sliding windows, which are not limited by the present application.

[0040] In some embodiments, historical cache information can be combined with real-time analysis of recent pressure data points, for example, 3-4 data points in the past 300 ms, to determine the predicted breathing state.

[0041] The next period is the time period in which the control action takes effect.

[0042] The predicted breathing state is used to represent the precise phase point of the user's breathing cycle at the current time, and to predict that the phase will continue.

[0043] The controller can analyze the pressure information in the target period, and by analyzing the breathing rhythm characteristics (such as cycle length, inhalation / exhalation duration ratio, and pressure change slope) of the target period, the controller can determine the breathing state (inhalation or exhalation) of the user in the next period (e.g., 0.5-1 second in the future).

[0044] In some embodiments, for example, after confirming the breathing state of the user, the instantaneous pressure change rate in a very short target window can be analyzed, for example, under the premise of having been confirmed as inhalation, if the instantaneous pressure change rate is continuously positive and exceeds a small threshold (such as 0.5 N / s), the controller predicts: "the user's inhalation action is in progress, and will most likely continue in the next instant (such as within 50 ms)".

[0045] Step 120, based on the predicted breathing state, control the inflation amount of at least one airbag assembly in the next period.

[0046] In this step, after confirming the predicted breathing state, the controller can issue corresponding control instructions within a predetermined period (such as within a period of ≤50 ms).

[0047] In actual execution, the user can feel the change in breathing state, and the waist support force changes accordingly.

[0048] By controlling the inflation amount of the airbag assembly in the next period, the waist support ability of the waist support module to the user's waist can be changed to adapt to the user's breathing rhythm and improve the fit of the waist support and the waist.

[0049] According to the seat provided in the embodiments of the present application, the inflation amount of the air bag assembly is dynamically adjusted by identifying the breathing rhythm of the user, so that the support force of the waist support module is dynamically adjusted according to the breathing rhythm of the user, the fit of the waist support module and the waist of the user is improved, the full-breathing-period gap-free support is achieved, and the use experience of the user is improved.

[0050] In some embodiments, the breathing sensing module can include an infrared distance sensor.

[0051] In this embodiment, the infrared distance sensor can detect the abdominal fluctuation information of the user in a non-contact manner to determine the predicted breathing state.

[0052] In some embodiments, step 110 can include: obtaining a change of the pressure information in the target period based on the pressure information of the target object in the target period; determining the predicted breathing state based on the change.

[0053] In this embodiment, the controller processes the received continuous pressure sampling values, and can calculate the change trend (such as rising, falling or stable, etc.) and the change amplitude thereof.

[0054] The change of the pressure information in the target period can include the slope, extreme point and period length, etc.

[0055] The controller can determine the predicted breathing state based on the change, for example, by a pattern recognition algorithm, the current pressure change waveform can be matched with the known inhale and exhale waveform templates, so as to determine the predicted breathing state of the next period.

[0056] As shown in FIG. 1, Figure 3 In some embodiments, determining the predicted breathing state based on the change can include: in a case where the change includes that the pressure information is detected to be in a rising trend in the target period, and the pressure information amplitude from the start point to the end point of the target period is greater than a first pressure threshold, determining that the predicted breathing state is the inhale state.

[0057] In this embodiment, the pressure as a whole can be confirmed to present a stable and continuous increasing trend in the entire target period by linear fitting, calculating the average slope or judging whether most of the consecutive points in the sequence are in an increasing relationship, etc., and the interference signals such as first rising and then falling or severe oscillation can be excluded.

[0058] The difference between the pressure value at the start point of the target period and the pressure value at the end point, i.e., the pressure information amplitude, can be calculated, and the pressure information amplitude is compared with the preset first pressure threshold to determine whether the predicted breathing state is the inhale state.

[0059] The first pressure threshold value can be based on user customization, for example, 2N or 3N, or other values, which are not limited in the present application.

[0060] For example, in the case that the pressure information is detected to be in an upward trend in the target period, and the pressure information amplitude from the start to the end of the target period is greater than the first pressure threshold value (such as 2N), it can be determined that the user is in an inhalation state, and it can be predicted that the user is still in an inhalation state in the next short period of time, and the user's waist will still be in an expansion or maintenance state, and the controller can start the support force adjustment.

[0061] Continuing to refer to Figure 3 In some embodiments, determining the predicted breathing state based on the change condition can include: In the case that the change condition includes that the pressure information is detected to be in a downward trend in the target period, and the pressure information amplitude from the start to the end of the target period is greater than the second pressure threshold value, it is determined that the breathing state of the target object is an exhalation state.

[0062] In this embodiment, it can be determined whether the pressure value as a whole presents a stable and continuous decreasing trend in the entire target period by calculating the average slope and analyzing the monotonicity of the data points.

[0063] After determining the pressure downward trend, the reduction amount between the pressure value at the start of the target period and the pressure value at the end of the target period, i.e., the pressure information amplitude, can be calculated.

[0064] The pressure information amplitude can be compared with a preset second pressure threshold value, which can be the same or different value as the first pressure threshold value, for example, the second pressure threshold value can be set to 2N or 3N, or other values, which are not limited in the present application.

[0065] In the case that the pressure information is detected to be in a downward trend in the target period, and the pressure information amplitude from the start to the end of the target period is greater than the second pressure threshold value, it can be determined that the user is in an exhalation state, and it can be predicted that the user is still in an exhalation state in the next short period of time, and the user's waist will still be in a contraction or relaxation state, and the controller can start the support force recovery or enhancement adjustment.

[0066] In the present application, a simple "inhalation / exhalation" state machine can be maintained inside the controller. By alternately triggering the two judgment conditions, the flow of the user's breathing cycle can be clearly tracked, and a trigger signal can be provided for the next step of the support force bidirectional adjustment (decompression during inhalation and pressure increase during exhalation).

[0067] In some embodiments, step 120 can comprise: In the case of predicting the breathing state as the inhale state, the controller controls the inflation amount of each airbag assembly in the next period to decrease by a first target inflation amount; In the case of predicting the breathing state as the exhale state, the controller controls the inflation amount of each airbag assembly in the next period to increase by a second target inflation amount.

[0068] In this embodiment, in the case that the controller determines that the user is in the inhale state, the support force adjustment logic inside is triggered, and according to the preset adjustment logic, a pressure relief instruction can be generated, wherein the pressure relief instruction at least includes the adjustment direction (decrease) and the adjustment amount (the first target inflation amount).

[0069] In response to the pressure relief instruction, the inflation amount of the airbag assembly in the next period can be controlled to decrease by the first target inflation amount.

[0070] The first target inflation amount is a preset or dynamically calculated value, for example, the first target inflation amount can correspond to reducing the airbag support force by 5%-8% of the initial support force, for example, if the initial support force is set to 50N, the decrease of the first target inflation amount will reduce the support force by 2.5N to 4N.

[0071] In the inhale state, controlling the inflation amount of the airbag assembly to decrease by the first target inflation amount can actively adapt to the physiological changes that occur when the user inhales. When inhaling, the thorax expands, the physiological curvature of the lumbar spine may change slightly, and the soft tissue of the waist may expand slightly outward (about 1-3 cm). By synchronously reducing the airbag inflation amount and the support force, the waist support "gives space" to the expanded waist, thereby avoiding continuous fixed compression on the waist, relieving the binding of blood circulation and muscles, and achieving "non-compression support".

[0072] The inventor found through testing that a targeted reduction of 5-8% of the support force during the inhale phase can avoid the reverse compression of the waist support on the expanded waist compared to the fixed waist support seat in the related art, and the blood circulation of the waist is improved by 40%, and the waist soreness and swelling after sitting for 2 hours is reduced by 60%.

[0073] In the case that the controller determines that the user is in the exhale state, an inflation instruction can be generated, and the inflation instruction can include the adjustment direction (increase) and the adjustment amount (the second target inflation amount).

[0074] The second target inflation amount can be used to compensate for the reduced air volume in the previous inhale phase, so that the inflation amount and the support force of the airbag return to the initial level (e.g., 50N) preset by the user.

[0075] In the exhalation state, the waist part is restored to a relaxed or slightly contracted state, and the airbag assembly is synchronously controlled to increase the inflation amount by a second target inflation amount, so as to synchronously increase the supporting force of the airbag assembly, so that the waist support can be tightly fitted to the waist curve again, fill the small gap that may be generated due to body relaxation, maintain continuous support for the lumbar vertebrae, and prevent the waist from feeling suspended and tired due to interruption of the support.

[0076] The controller continuously performs the breathing state determination and the bidirectional adjustment, and the supporting force of the waist support dynamically and cyclically changes between the initial support (exhalation) - moderate weakening (inhale) - restore the initial (exhalation), so that the user can feel the support system dynamically changing with the breathing rhythm, and the comfort in the whole breathing cycle is improved.

[0077] In some embodiments, the first target inflation amount increases as the pressure information increase amplitude corresponding to the target period increases, and decreases as the pressure information increase amplitude corresponding to the target period decreases; and the second target inflation amount increases as the pressure information decrease amplitude corresponding to the target period increases, and decreases as the pressure information decrease amplitude corresponding to the target period decreases.

[0078] In this embodiment, the adjustment amplitude is positively correlated with the breathing amplitude, that is, the deeper the user's breath (represented by the greater pressure change), the greater the adjustment amplitude of the supporting force of the waist support, and the shallower the breath, the smaller the adjustment amplitude.

[0079] A set of mapping relationship functions or lookup tables can be established in advance to define the positive correlation between the first target inflation amount and the pressure information increase amplitude, and another set of mapping relationships is established to determine how the second target inflation amount should change with the pressure information decrease amplitude.

[0080] If a large pressure information increase amplitude is detected (for example, the user takes a deep breath, and the pressure increase amplitude is 5N), the controller can increase the first target inflation amount (i.e., the planned amount of air to be reduced) according to the mapping relationship. For example, the adjustment amplitude is increased from the basic 5% to 7% or 8%.

[0081] If a small pressure information increase amplitude is detected (for example, the user takes a shallow breath, and the pressure increase amplitude is only 2.5N), the controller can reduce the first target inflation amount. For example, the adjustment amplitude is reduced to 5% or less.

[0082] If the pressure decrease amplitude is large (corresponding to a deep exhalation), the second target inflation amount is increased (i.e., more air is added) to ensure that the support for the waist part that may be more relaxed due to deep exhalation can be quickly restored.

[0083] If the pressure decrease amplitude is small (corresponding to a shallow exhalation), the second target inflation amount is reduced, and only a slight adjustment is made to fit the slight shape change of the waist part.

[0084] In the present application, by dynamically adjusting the airbag inflation amount according to the pressure information change amount, it can automatically adapt to different users (such as different lung capacity) or the same user in different states (such as shallow breathing when resting and deep breathing when tired).

[0085] In some embodiments, the controller can also be used to: Obtain the breathing frequency of the target object, adjust the timing of the output control instruction; the control instruction is used to control the inflation amount of the at least one airbag assembly in the next time period.

[0086] In this embodiment, the controller can identify the continuous inspiration start point (or expiration start point) by continuously monitoring and analyzing the signal of the pressure sensor. By calculating the time interval between these feature points, the breathing frequency of the user (unit: times / minute, BPM) can be calculated in real time. For example, if the interval between two inspiration start points is 4 seconds, the breathing frequency is 15 BPM.

[0087] The controller can convert the breathing frequency into an average breathing period. For example, 15 BPM corresponds to a period T=4 seconds.

[0088] Through analysis of historical data, the controller can estimate the approximate ratio of inspiration phase length to expiration phase length in the user's current breathing pattern, thereby constructing a simple time model of the user's current breathing rhythm.

[0089] The controller can feed forward compensate the instruction output timing based on the above breathing rhythm model.

[0090] Based on the current rhythm model, the approximate time of the next breathing phase switch (such as from inspiration to expiration) can be predicted.

[0091] In order to make the airbag reach the expected support force state at the predicted phase switching time, the controller can issue the instruction in advance by a system total delay time (for example, 100 ms).

[0092] If the user's breathing frequency changes (for example, from 15 BPM to 18 BPM), the controller can immediately update its internal rhythm model and recalculate the period and phase ratio, thereby dynamically adjusting the actual issuance time of subsequent instructions.

[0093] In the present application, by identifying the user's breathing frequency, the support force response speed can be dynamically adjusted, thereby ensuring that the adjustment action is synchronized with the breathing period. The inventors have found that the lag time of the adjustment action can be within 100 ms, which is almost simultaneous in the user's subjective perception, without support interruption or lag phenomenon, reducing the instantaneous pressure fluctuation amplitude of the lumbar vertebrae, improving the support stability, and improving the user's experience.

[0094] In the present application, the adult respiratory frequency of 12-20 times per minute is automatically identified, without manual adjustment by the user, and is adapted to different breathing rhythms of the user. Compared with the related art, the use threshold of the present application is reduced by 80%, and is particularly suitable for focused scenes such as office and driving.

[0095] In some embodiments, the waist support module can include an air bag driving module.

[0096] In this embodiment, the response time of the air bag driving module can be within 50 ms for receiving the control instruction output by the controller and adjusting the inflation amount of the air bag assembly in response to the control instruction to achieve dynamic change of the support force.

[0097] In some embodiments, the air bag driving module can include an air pump for increasing the inflation amount of at least one air bag assembly in the next period when receiving the control instruction output by the controller.

[0098] In this embodiment, when the controller determines that the support force adjustment of the exhalation phase needs to be performed according to the breathing state determination, a specific "inflation control instruction" will be generated, which is sent to the control circuit of the air bag driving module through the connecting wire.

[0099] The control circuit of the air bag driving module can drive the micro air pump inside after receiving and analyzing the instruction. The air pump can include a diaphragm pump or a piston pump, which has the characteristics of small volume, low noise and moderate power consumption.

[0100] After the air pump is started, ambient air is sucked in through the air inlet, pressurized through the pump body, and then pumped into the air bag assembly through the air outlet and the connecting air pipe.

[0101] The controller can calculate the required pumping time according to the nominal flow rate of the air pump and the second target inflation amount, and control the air pump to stop after running for the accurate duration after starting; or a pressure sensor can be integrated in the air bag driving module or the controller to monitor the air bag pressure in real time, and the inflation process continues until the monitored pressure value reaches the preset pressure threshold corresponding to the target inflation amount.

[0102] In some embodiments, the air bag pressure can be continuously monitored during the inflation process, and the inflation process is terminated when the air bag pressure is detected to exceed a safe upper limit value (such as 0.3 MPa) to prevent the air bag from being excessively inflated and causing discomfort or damage.

[0103] In some embodiments, the power supply circuit of the air pump is protected by the overcurrent and overvoltage protection circuit in the power supply module to ensure electrical safety.

[0104] In some embodiments, the airbag driving module can comprise a pressure relief module for reducing the inflation amount of the at least one airbag assembly in the next period upon receiving a control instruction output by the controller.

[0105] In this embodiment, the pressure relief module can comprise a high-speed electromagnetic pressure relief valve, and the pressure relief module can be integrally arranged with the air pump and the air path control system in the airbag driving module, and communicates with the airbag assembly through the same set of air pipes.

[0106] When the controller determines that the support force adjustment of the inhalation phase needs to be performed according to the breathing state determination, a “pressure relief control instruction” is generated.

[0107] The instruction is sent to the airbag driving module, and the control circuit in the module drives the coil of the electromagnetic pressure relief valve to be electrified, and the valve core moves rapidly under the electromagnetic force, so as to open the pressure relief channel connecting the inside of the airbag assembly and the external environment.

[0108] After the pressure relief valve is opened, the compressed air in the airbag assembly is discharged to the outside under the action of its own pressure through the opened valve.

[0109] The controller can calculate the opening time required by the pressure relief valve according to the initial pressure of the airbag and the target pressure drop, and control the valve to be closed after being opened for the accurate time; or the pressure relief process can be continuously performed until the pressure in the airbag drops to a preset pressure threshold corresponding to the target reduction amount, in combination with real-time pressure monitoring.

[0110] In some embodiments, the seat can further comprise an interaction module connected with the controller, for receiving a first input of a user, and the first input is used for the controller to adjust the working mode of the seat.

[0111] In this embodiment, the interaction module can comprise an operation interaction panel, and the interaction module can be embedded into a side surface of the seat body or a front end of an armrest, and can be electrically connected with the controller through a wire.

[0112] The interaction module can be provided with a power key and a mode switching key.

[0113] The first input can comprise a power control input and a mode switching input.

[0114] For example, in the case that the user presses the power key, the controller receives this input and triggers the power-on start or power-off shutdown process of the entire system. When starting, the controller initializes each module (sensor, driver), and makes the system enter a preset standby or default working mode.

[0115] In the case that the user presses the mode switching key, for example, in the case that the user selects the automatic mode (breath linkage mode), the controller will activate the continuous monitoring of the pressure sensor and run the breath rhythm recognition algorithm and linkage adjustment logic of the support force. The system enters the full-automatic working state, and the waist support dynamically adjusts the support force according to the breath rhythm of the user.

[0116] In the case that the user selects the manual mode, the breath linkage function is suspended or turned off, and the user can manually set a fixed waist support support force through the same panel or other controls (such as adding a pair of “support force +” and “support force -” buttons). The controller maintains the air bag pressure according to the manually set value.

[0117] In some embodiments, in the automatic mode, the user can perform initial support force presetting through a combination of keys (such as long-pressing the mode key) or a special gear switch. For example, three optional gears of “gentle”, “standard”, and “strong” are provided, which respectively correspond to initial support force target values of about 30N, 50N, and 80N.

[0118] The controller can also store the initial support force target value set by the user as a user preference parameter. In subsequent automatic breath linkage adjustment, the support force change (such as the force value recovered during exhalation) can be calculated and adjusted based on this preset value.

[0119] In some embodiments, the seat can be connected with a user terminal.

[0120] In this embodiment, the user terminal can include a user mobile phone APP, etc., such as that the user can set the initial support force, turn on / off the breath linkage function through the mobile phone APP, and can view the breath frequency data through the mobile phone APP.

[0121] In the actual execution process, as shown in Figure 3 After the user sits down, the user can press the “power key” through the interaction module, select the “automatic mode” (turn on the breath linkage function), and can preset the initial support force (such as selecting the “standard gear”, the initial support force is 50N), the power module supplies power to each module, and the device enters the standby state.

[0122] The micro pressure sensor of the breath sensing module is attached to the user's abdomen, and continuously collects pressure change signals (such as, 1 data can be collected every 100ms); after the controller receives the signal, the pressure change law is analyzed through the breath rhythm recognition algorithm, the inhalation / exhalation state is determined (such as, the pressure rises from 30N to 35N, lasts for 0.5 seconds, and is determined as inhalation; the pressure drops from 35N to 30N, lasts for 0.3 seconds, and is determined as exhalation), and the user's breath frequency (such as 15 times / minute) is recorded.

[0123] In the inspiration stage, the controller can output a "pressure relief instruction", the electromagnetic pressure relief valve of the air bag driving module is opened, the inflation amount of the air bag assembly is reduced by 5-8% (such as from 10 mL to 9.2 mL), the supporting force is reduced from 50 N to 46-47.5 N, which is suitable for the waist expansion movement and avoids compression; in the expiration stage, the controller outputs a "inflation instruction", the micro air pump is started, and the air bag assembly returns to the initial inflation amount, and the supporting force returns to 50 N, which is suitable for the contracted waist and maintains effective support; the controller can continuously link and adjust the supporting force according to the real-time recognized breathing rhythm, and ensure that the supporting force dynamically adapts in each breathing cycle.

[0124] When the user gets up or presses the "off key" through the interaction module, the controller triggers the air bag driving module to completely relieve pressure, and the air bag assembly returns to the initial state (inflation amount 5 mL); the power module cuts off the power supply of unnecessary modules, and the device enters the sleep state.

[0125] In the case of detecting no periodic change in the pressure signal or signal interruption, it can be determined as an abnormal state, the air bag assembly can be controlled to maintain the current supporting force, and a prompt information (such as sound and light alarm information) can be output, and the pressure sensor can be controlled to continuously monitor the signal, and in the case of not recovering for more than 30s (or other time length), the seat can be controlled to stop.

[0126] In some embodiments, in the medical rehabilitation field, such as postoperative rehabilitation chair for lumbar vertebrae, a breathing frequency monitoring and warning function can be set, such as in the case of detecting that the breathing frequency is <10 times / minute or >25 times / minute, a sound and light alarm can be triggered; the waist support force adjustment range can be reduced to 3-5%, so as to avoid excessive support affecting rehabilitation.

[0127] In the field of vehicle-mounted seats, the breathing sensing module can be set as an "anti-jolt" breathing sensing module (with a damping structure), which is suitable for the jolt environment during vehicle driving, and the controller adds a "sudden brake linkage" (sudden brake stops breathing adjustment and maintains maximum supporting force to protect the waist).

[0128] In the field of infants, the breathing sensing module can be set to adapt to the size of the child's abdomen, the supporting force range is adjusted to 10-30 N, and the adjustment range is reduced to 2-3%, which is suitable for the breathing frequency of children (20-30 times / minute).

[0129] In the present application, the seat can include different types of seats such as vehicle-mounted seats and rehabilitation chairs, and for different types of seats, the size and installation position of the waist support air bag do not need to be reconstructed, which reduces the adaptation cost.

[0130] It should be noted that, in the present document, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a", "comprising", or "comprises" does not, without more constraints, preclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element. Additionally, it should be noted that the terms "one embodiment", "some embodiments", "certain embodiments", "certain examples", or "some examples" as used in the present document are intended to refer to one or more embodiments or examples that do not necessarily have to cover all embodiments or examples of the present application. In other words, use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0131] From the above description of the embodiments, it is apparent that the above-described method of the embodiments can be realized by means of software and general-purpose hardware platforms. Of course, it can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such an understanding, the technical solutions of the present application, in essence, or the parts that make contributions to the related art, can be embodied in the form of a computer software product stored in a storage medium (such as a ROM / RAM, a magnetic disk, or an optical disk), which includes a plurality of instructions for causing a terminal (which can be a mobile phone, a computer, a server, or a network device) to perform the methods described in the embodiments of the present application.

[0132] The embodiments of the present application are described above in conjunction with the drawings, but the present application is not limited to the above-described specific embodiments, which are merely illustrative rather than restrictive, and a person of ordinary skill in the art can make many forms without departing from the scope of the present application and the protection scope of the claims.

[0133] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "certain embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the described specific features, structures, materials, or characteristics can be combined in any suitable manner in any one or more embodiments or examples.

[0134] While the embodiments of the application have been shown and described, it is to be understood that the embodiments can be varied, modified, substituted and changed by those skilled in the art without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A type of seat, characterized in that, include: Chair back structure; A pressure sensor is installed in the chair back structure; A lumbar support module, including at least one airbag assembly, wherein the lumbar support module is disposed on the chair back structure; The controller is connected to the pressure sensor and the lumbar support module respectively, and is used to determine the predicted breathing state of the target object in the next period of the target period based on the pressure information of the target object on the seat collected by the pressure sensor during the target period, and to control the inflation amount of the at least one airbag assembly in the next period of the target period based on the predicted breathing state.

2. The seat according to claim 1, characterized in that, The step of determining the predicted respiratory state of the target object in the next time period based on the pressure information of the target object on the seat collected by the pressure sensor during the target time period includes: Based on the pressure information of the target object during the target time period, obtain the changes in the pressure information during the target time period; Based on the changes, the predicted respiratory state is determined.

3. The seat according to claim 2, characterized in that, Determining the predicted respiratory state based on the changes includes: The change scenario includes the case where, during the target time period, the pressure information is detected to be on an upward trend, and the increase in pressure information from the beginning to the end of the target time period is greater than a first pressure threshold, in which case the predicted breathing state is determined to be an inspiratory state.

4. The seat control method according to claim 2, characterized in that, Determining the predicted respiratory state based on the changes includes: The change includes situations where, during the target time period, the pressure information is detected to be on a downward trend, and the decrease in pressure information from the beginning to the end of the target time period is greater than a second pressure threshold, in which case the breathing state of the target object is determined to be an exhalation state.

5. The seat according to any one of claims 1-4, characterized in that, The step of controlling the inflation volume of the at least one airbag assembly in the next time period based on the predicted respiratory state includes: When the predicted breathing state is inhalation, the inflation volume of each airbag assembly in the next time period is controlled to decrease by a first target inflation volume. When the predicted breathing state is expiratory, the inflation volume of each of the airbag assemblies is controlled to increase by a second target inflation volume in the next time period.

6. The seat according to claim 5, characterized in that, The first target inflation volume increases as the pressure information increase corresponding to the target time period increases, and the first target inflation volume decreases as the pressure information increase corresponding to the target time period decreases. The second target inflation volume increases as the pressure information decreases during the target time period, and decreases as the pressure information decreases during the target time period.

7. The seat according to any one of claims 1-4, characterized in that, The controller is also used for: The respiratory rate of the target object is obtained, and the timing of the output control command is adjusted; the control command is used to control the inflation amount of the at least one airbag component in the next time period.

8. The seat according to any one of claims 1-4, characterized in that, The lumbar support module includes: An air pump is used to increase the inflation amount of the at least one airbag assembly in the next time period upon receiving a control command output by the controller.

9. The seat according to any one of claims 1-4, characterized in that, The lumbar support module includes: The depressurization module is used to reduce the inflation amount of the at least one airbag assembly in the next time period upon receiving a control command output by the controller.

10. The seat according to any one of claims 1-4, characterized in that, Also includes: An interaction module, connected to the controller, is used to receive a first input from the user, which is used by the controller to adjust the working mode of the seat.

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