Ergonomic chair

Abstract

The invention discloses an ergonomic chair which comprises a monitoring module, an analysis module and an adjusting module, the monitoring module is used for collecting electromyographic signals of at least one target muscle group on the back of a user and preprocessing the electromyographic signals, and the analysis module is used for adjusting the electromyographic signals according to the preprocessed electromyographic signals. The adjusting module is used for determining the tension state of at least one target muscle group on the back of the user, positioning a main tension area according to the tension state of the at least one target muscle group and generating a corresponding adjusting signal according to the tension state and the main tension area, and the adjusting module is used for determining the tension muscle group and at least one adjusting assembly corresponding to the tension muscle group according to the adjusting signal; the position state and / or the form state of at least one corresponding adjusting assembly are / is adjusted in a sectional mode, so that the tension muscle group is relaxed; the muscle tension is directly monitored through the electromyographic signals, and sectional adjustment is carried out according to the muscle tension, so that force is accurately applied to different muscle groups, the local muscle tension is rapidly reduced, and a user is helped to rapidly relieve fatigue.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chairs, in particular to an ergonomic chair. BACKGROUND

[0002] Muscle fatigue of shoulder and back caused by long-term sitting is a common health problem of office workers. Continuous muscle tension can cause poor local blood circulation, accumulation of metabolic products, and even pain and strain.

[0003] Ergonomic chairs can relieve fatigue by optimizing the support structure, but traditional ergonomic chair products rely on static support design and cannot respond to muscle dynamic tension state in real time, so the targetedness of relieving muscle fatigue or muscle tension is poor, resulting in poor user experience. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the purpose of the present application is to propose an ergonomic chair.

[0005] The ergonomic chair proposed by the present application comprises a monitoring module for collecting electromyographic signals of at least one target muscle group of the user's back and pre-processing the electromyographic signals; an analysis module electrically connected to the monitoring module, the analysis module being configured to determine the tension state of at least one target muscle group of the user's back according to the pre-processed electromyographic signals, locate the main tension area according to the tension state of at least one target muscle group, and generate a corresponding adjustment signal according to the tension state and the main tension area; and an adjustment module electrically connected to the analysis module, the adjustment module comprising at least one adjustment component corresponding to at least one target muscle group, the position state and / or the shape state of each adjustment component being variable, the adjustment module being configured to determine the tension muscle group and at least one adjustment component corresponding thereto according to the adjustment signal, and to adjust the position state and / or the shape state of at least one corresponding adjustment component in a segmented manner to relax the tension muscle group.

[0006] The ergonomic chair according to the present application comprises a monitoring module, an analysis module and an adjustment module, the monitoring module is used for collecting electromyographic signals of at least one target muscle group of the back of a user and pre-processing the electromyographic signals, the analysis module is used for determining a tension state of the at least one target muscle group of the back of the user according to the pre-processed electromyographic signals, positioning a main tension area according to the tension state of the at least one target muscle group, and generating a corresponding adjustment signal according to the tension state and the main tension area, and the adjustment module is used for determining a tension muscle group and at least one corresponding adjustment component thereof according to the adjustment signal, and adjusting a position state and / or a shape state of the at least one corresponding adjustment component in a segmented manner to relax the tension muscle group. That is, the ergonomic chair directly monitors muscle tension through electromyographic signals and adjusts in a segmented manner according to the muscle tension, so as to accurately apply force to different muscle groups, rapidly reduce local muscle tension, help the user quickly relieve fatigue, and ensure a good user experience.

[0007] In addition, the ergonomic chair according to the present application can have the following additional technical features: In some examples, the monitoring module comprises at least one set of electromyographic sensors attached to the target muscle group of the back of the user, and the at least one set of electromyographic sensors is used for collecting electromyographic signals of at least one target muscle group of the back of the user, and a signal processing unit electrically connected to the at least one set of electromyographic sensors, and the signal processing unit is used for pre-processing the electromyographic signals, wherein the pre-processing at least includes signal amplification processing and filtering processing. In this way, the monitoring module can effectively collect electromyographic signals of at least one target muscle group of the back of the user and pre-process the electromyographic signals, so as to facilitate subsequent tension state confirmation and tension muscle adjustment according to the pre-processed electromyographic signals.

[0008] In some examples, when determining a tension state of at least one target muscle group of the back of the user according to the pre-processed electromyographic signals and positioning a main tension area according to the tension state of the at least one target muscle group, the analysis module is used for calculating a root mean square value of the pre-processed electromyographic signals collected by each set of electromyographic sensors as a characteristic value reflecting the activity intensity of the corresponding muscle, and determining a tension score corresponding to the characteristic value, determining muscle tension of any target muscle group when the tension score corresponding to the target muscle group reaches a preset tension threshold for a duration reaching a preset time length, and positioning the main tension area by comparing the differences between the tension scores of different target muscle groups. In this way, the analysis module can accurately determine a tension state of at least one target muscle group of the back of the user according to the pre-processed electromyographic signals, and accurately position a main tension area according to the tension state of the at least one target muscle group, so as to facilitate subsequent targeted tension muscle adjustment according to the tension state and the main tension area.

[0009] In some examples, the adjusting assembly comprises: an independent support part arranged on the backrest of the ergonomic chair at a position corresponding to the target muscle group, the independent support part being adjustable in a protruding height relative to the backrest; an electric push rod connected with the independent support part, the electric push rod being used to adjust the protruding height of the independent support part relative to the backrest; and an angle adjusting motor used to adjust the overall inclination angle of the backrest; in this way, at least one corresponding adjusting assembly can relax the tense muscle group by changing the position state and / or the shape state, helping the user to quickly relieve fatigue and ensuring a good user experience.

[0010] In some examples, when the position state and / or the shape state of at least one corresponding adjusting assembly is adjusted in a segmented manner, the adjusting module is configured to: adjust the extension stroke of at least one electric push rod to correspondingly adjust the protruding height of at least one independent support part relative to the backrest; and / or, adjust the rotation stroke of the angle adjusting motor to adjust the overall inclination angle of the backrest; in this way, the adjusting module can relax the tense muscle group by adjusting the position state and / or the shape state of at least one corresponding adjusting assembly in a segmented manner, helping the user to quickly relieve fatigue and ensuring a good user experience.

[0011] In some examples, the adjusting module further comprises: at least one set of air pressure massage units arranged on the backrest at positions corresponding to at least one target muscle group of the user, the at least one set of air pressure massage units being used to pulse massage the at least one target muscle group of the user's back; when the tense muscle group and its corresponding at least one adjusting assembly are determined according to the adjusting signal, and the position state and / or the shape state of at least one corresponding adjusting assembly is adjusted in a segmented manner, the adjusting module is further configured to: determine the tense muscle group and its corresponding air pressure massage unit according to the adjusting signal, and adjust the pulse frequency of at least one corresponding air pressure massage unit in a segmented manner to pulse massage the tense muscle group; in this way, the adjusting module can also accurately pulse massage the tense muscle group, promote the blood circulation of the tense muscle group, help the user to further relieve fatigue, and ensure a good user experience.

[0012] In some examples, after determining the tense muscle group and at least one corresponding adjustment component according to the adjustment signal and adjusting the position state and / or the conformation state of the at least one corresponding adjustment component in a segmented manner, the adjustment module is further configured to: when it is determined that the tense muscle group is still in a tense state according to the adjustment signal after the segmented adjustment is performed for a preset time length, iteratively adjusting the position state and / or the conformation state of the at least one corresponding adjustment component until it is determined that the tense muscle group is not in a tense state according to the adjustment signal, wherein the adjustment amplitude of the at least one corresponding adjustment component is smaller than the adjustment amplitude of the at least one corresponding adjustment component in the last iteration; in this way, the adjustment module iteratively adjusts the tense muscle in a manner, and the adjustment amplitude of each iteration is smaller than the last one, thereby helping to ensure effective relief of the muscle.

[0013] In some examples, the ergonomic chair further comprises an environment adjustment module configured to adjust the illumination and / or sound and / or temperature and humidity of an environment in which the ergonomic chair is located; after determining the tense muscle group and at least one corresponding adjustment component according to the adjustment signal and adjusting the position state and / or the conformation state of the at least one corresponding adjustment component in a segmented manner, the adjustment module is further configured to: when it is determined that the tense muscle group is still in a tense state according to the adjustment signal after the segmented adjustment is performed for a preset time length threshold, generating and sending an environment adjustment signal to the environment adjustment module to make the environment adjustment module adjust the illumination and / or sound and / or temperature and humidity of the environment in which the ergonomic chair is located when the environment adjustment signal is received; in this way, the adjustment module can also change the environmental conditions through the environment adjustment module when relaxing the tense muscle, thereby assisting muscle relaxation.

[0014] In some examples, the ergonomic chair further comprises a power module electrically connected to the monitoring module, the analysis module and the adjustment module, the power module being configured to power the monitoring module, the analysis module and the adjustment module; an interaction module communicatively connected to the analysis module, the interaction module being configured to determine the tense state of the target muscle group according to the adjustment signal and visually feedback the tense state; in this way, the power module ensures the reliability of the adjustment, and the interaction module visually feedbacks the tense state, thereby facilitating the user to understand the tense state of the muscle.

[0015] In some examples, when visualizing the tension state, the interaction module is further configured to: generate historical muscle tension regularity data of the user according to the visualized tension state; predict a fatigue-prone period and a tension-prone muscle group of the user according to the historical muscle tension regularity data; and generate and send a pre-adjustment signal to the adjustment module in the fatigue-prone period, so that the adjustment module determines the tension-prone muscle group and at least one corresponding adjustment component thereof and adjusts a position state and / or a form state of the at least one corresponding adjustment component upon receiving the pre-adjustment signal. In this way, the historical muscle tension regularity data of the user is determined by the interaction module, the fatigue-prone period and the tension-prone muscle group of the user are predicted, and the adjustment module is controlled to pre-adjust the adjustment component according to the tension-prone muscle group in the fatigue-prone period, thereby helping to improve the efficiency of adjustment and the intelligence of adjustment.

[0016] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and / or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which: Figure 1 is a structural schematic diagram of an ergonomic chair according to an embodiment of the present application; Figure 2 is a structural schematic diagram of an ergonomic chair according to another embodiment of the present application; Figure 3 is a structural schematic diagram of an ergonomic chair according to yet another embodiment of the present application; Figure 4 is a schematic diagram of an ergonomic chair according to a specific embodiment of the present application.

[0018] REFERENCE NUMERALS 100 - ergonomic chair; 110 - monitoring module; 111 - electromyographic sensor; 112 - signal processing unit; 120 - analysis module; 130 - adjustment module; 131 - adjustment component; 132 - pneumatic massage unit; 140 - environmental adjustment module; 150 - power supply module; 160 - interaction module; 1311 - independent support part; 1312 - electric push rod; 1313 - angle adjustment motor. DETAILED DESCRIPTION

[0019] Embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0020] The following description refers to the accompanying drawings. Figures 1-4 An ergonomic chair according to an embodiment of the present application is described below.

[0021] Figure 1 Fig. 1 is a schematic diagram of an ergonomic chair according to an embodiment of the present application. As shown in Fig. 1, the ergonomic chair 100 comprises a monitoring module 110 configured to collect and pre-process electromyography signals of at least one target muscle group of a user's back, an analysis module 120 electrically connected to the monitoring module 110, the analysis module 120 configured to determine a tension state of the at least one target muscle group of the user's back according to the pre-processed electromyography signals, to locate a main tension area according to the tension state of the at least one target muscle group, and to generate a corresponding adjustment signal according to the tension state and the main tension area, and an adjustment module 130 electrically connected to the analysis module 120, the adjustment module 130 comprising at least one adjustment component 131 corresponding to the at least one target muscle group, a position state and / or a shape state of each adjustment component 131 being variable, the adjustment module 130 configured to determine the tension muscle group and the at least one adjustment component 131 corresponding thereto according to the adjustment signal, and to adjust the position state and / or the shape state of the at least one corresponding adjustment component 131 in a segmented manner to relax the tension muscle group. Figure 1

[0022] In a specific embodiment, the monitoring module 110 is configured to collect and pre-process electromyography signals of at least one target muscle group of a user's back. Specifically, the target muscle group includes, but is not limited to, trapezius, latissimus dorsi and erector spinae, and the pre-processing includes, but is not limited to, signal amplification and signal filtering processing.

[0023] In a specific embodiment, the analysis module 120 is configured to determine a tension state of the at least one target muscle group of the user's back according to the pre-processed electromyography signals, to locate a main tension area according to the tension state of the at least one target muscle group, and to generate a corresponding adjustment signal according to the tension state and the main tension area. Specifically, the tension degree can be determined by extracting the intensity of the electromyography signals, and the position with the highest tension degree can be determined as the main tension area.

[0024] In a specific embodiment, the adjustment module 130 comprises at least one adjustment component 131 corresponding to the at least one target muscle group, a position state and / or a shape state of each adjustment component 131 being variable, the adjustment module 130 configured to determine the tension muscle group and the at least one adjustment component 131 corresponding thereto according to the adjustment signal, and to adjust the position state and / or the shape state of the at least one corresponding adjustment component 131 in a segmented manner to relax the tension muscle group. Specifically, the adjustment component includes, but is not limited to, an electric push rod or a chair back angle motor corresponding to different muscle positions.

[0025] ​Specifically, the ergonomic chair 100 according to the embodiment of the present application comprises a monitoring module 110, an analysis module 120 and an adjustment module 130. The monitoring module 110 is configured to collect the electromyography signals of at least one target muscle group of the user's back and pre-process the electromyography signals. The analysis module 120 is configured to determine the tension state of the at least one target muscle group of the user's back according to the pre-processed electromyography signals, locate the main tension area according to the tension state of the at least one target muscle group, and generate a corresponding adjustment signal according to the tension state and the main tension area. The adjustment module 130 is configured to determine the tension muscle group and at least one corresponding adjustment component 131 according to the adjustment signal, and segmentally adjust the position state and / or the shape state of the at least one corresponding adjustment component 131 to relax the tension muscle group. That is, the ergonomic chair 100 directly monitors the muscle tension through the electromyography signals and segmentally adjusts according to the muscle tension, so as to accurately apply force to different muscle groups, quickly reduce the local muscle tension, help the user quickly relieve fatigue, and ensure a good user experience.

[0026] In an embodiment of the present application, the monitoring module 110 comprises at least one set of electromyography sensors 111 attached to the target muscle group of the user's back, and the at least one set of electromyography sensors 111 is configured to collect the electromyography signals of the at least one target muscle group of the user's back. The monitoring module 110 further comprises a signal processing unit 112 electrically connected to the at least one set of electromyography sensors 111, and the signal processing unit 112 is configured to pre-process the electromyography signals. The pre-processing at least includes signal amplification processing and filtering processing.

[0027] In a specific embodiment, the monitoring module 110 comprises at least one set of electromyography sensors 111 and a signal processing unit 112. The at least one set of electromyography sensors 111 is configured to collect the electromyography signals of the at least one target muscle group of the user's back, and the signal processing unit 112 is configured to pre-process the electromyography signals. Specifically, the at least one set of electromyography sensors 111 comprises, for example, three sets of electromyography sensors corresponding to the trapezius muscle, the latissimus dorsi muscle and the erector spinae muscle of the user, respectively. The electromyography sensors are, for example, dry electrode sensors, the signal collection frequency is 1 kHz, and the common-mode rejection ratio is ≥80 dB. The electromyography signals are pre-processed, for example, through a preamplifier (gain 1000 times) and a 5-500 Hz band-pass filter (remove power frequency interference).

[0028] Specifically, the ergonomic chair 100 according to the embodiment of the present application, the monitoring module 110 comprises at least one set of electromyography sensors 111 and a signal processing unit 112, the at least one set of electromyography sensors 111 is used to collect electromyography signals of at least one target muscle group of the back of the user, and the signal processing unit 112 is used to pre-process the electromyography signals, wherein the pre-processing at least includes signal amplification processing and filtering processing; in this way, the monitoring module 110 can effectively collect electromyography signals of at least one target muscle group of the back of the user, and pre-process the electromyography signals, so as to facilitate subsequent confirmation of the tension state and adjustment of the tense muscle according to the pre-processed electromyography signals.

[0029] In an embodiment of the present application, when the tension state of at least one target muscle group of the back of the user is determined according to the pre-processed electromyography signals, and the main tension area is located according to the tension state of the at least one target muscle group, the analysis module 120 is configured to: calculate the root mean square value of the pre-processed electromyography signals collected by each set of electromyography sensors 111 as a characteristic value reflecting the activity intensity of the corresponding muscle, and determine the corresponding tension score according to the characteristic value; when the tension score corresponding to any target muscle group reaches a preset tension threshold for a duration reaching a preset time length, it is determined that the muscle of the target muscle group is tense; and the differences in tension scores between different target muscle groups are compared to locate the main tension area.

[0030] In a specific embodiment, the analysis module 120 calculates the root mean square value of the pre-processed electromyography signals collected by each set of electromyography sensors 111 as a characteristic value reflecting the activity intensity of the corresponding muscle, and determines the corresponding tension score according to the characteristic value; when the tension score corresponding to any target muscle group reaches a preset tension threshold for a duration reaching a preset time length, it is determined that the muscle of the target muscle group is tense; and the differences in tension scores between different target muscle groups are compared to locate the main tension area. Specifically, for example, an electromyography feature extraction algorithm is run, the muscle activity intensity is calculated by RMS (Root Mean Square), and the main tension area is located according to the signal differences of multiple sensors (for example, when the shoulder RMS value is more than 20% of the waist, it is determined that the shoulder is tense).

[0031] Specifically, according to the ergonomic chair 100 of the present invention, the analysis module 120 calculates the root mean square value of the preprocessed electromyographic signals collected by each group of electromyographic sensors 111 as a feature value reflecting the intensity of the corresponding muscle activity, and determines the corresponding tension score based on the feature value. When the tension score corresponding to any target muscle group reaches the preset tension threshold for a preset duration, the muscle tension of the target muscle group is determined. By comparing the differences in tension scores between different target muscle groups, the main tension area is located. Thus, the analysis module 120 can accurately determine the tension state of at least one target muscle group in the user's back based on the preprocessed electromyographic signals, and accurately locate the main tension area based on the tension state of at least one target muscle group, which facilitates subsequent targeted muscle tension adjustment based on the tension state and the main tension area.

[0032] In one embodiment of the present invention, the adjustment component 131 includes: an independent support portion 1311 disposed on the back of the ergonomic chair 100 corresponding to the position of the target muscle group, the protrusion height of the independent support portion 1311 relative to the back of the chair is adjustable; an electric push rod 1312 connected to the independent support portion 1311, the electric push rod 1312 being used to adjust the protrusion height of the independent support portion 1311 relative to the back of the chair; and an angle adjustment motor 1313 being used to adjust the overall tilt angle of the back of the chair.

[0033] In a specific embodiment, the adjustment component 131 includes an independent support part 1311, an electric push rod 1312, and an angle adjustment motor 1313. The independent support part 1311 is located on the back of the ergonomic chair 100 corresponding to the position of the target muscle group. The protrusion height of the independent support part 1311 relative to the back of the chair is adjustable. The electric push rod 1312 is used to adjust the protrusion height of the independent support part 1311 relative to the back of the chair, and the angle adjustment motor 1313 is used to adjust the overall tilt angle of the back of the chair. Specifically, the independent support unit 1311 includes, for example, a segmented backrest design: divided into a shoulder and back segment (corresponding to the trapezius muscle), an upper back segment (corresponding to the latissimus dorsi muscle), and a lumbar segment (corresponding to the erector spinae muscle), each segment being independently adjustable. The electric push rod 1312 includes, for example, three sets of miniature electric push rods (500N thrust, 20mm stroke) to drive the height of each backrest segment (adjustment range 0-15mm). The angle adjustment motor 1313 includes, for example, one set of DC motors to control the overall tilt angle of the backrest (90°-110°, adjustment accuracy ±1°) and help distribute pressure.

[0034] Specifically, according to the ergonomic chair 100 of the present invention, the adjustment component 131 includes an independent support part 1311, an electric push rod 1312, and an angle adjustment motor 1313. The independent support part 1311 is disposed on the back of the ergonomic chair 100 corresponding to the position of the target muscle group. The protrusion height of the independent support part 1311 relative to the back of the chair is adjustable. The electric push rod 1312 is used to adjust the protrusion height of the independent support part 1311 relative to the back of the chair. The angle adjustment motor 1313 is used to adjust the overall tilt angle of the back of the chair. Thus, at least one corresponding adjustment component 131 can relax tense muscle groups by changing the position and / or shape, which helps users quickly relieve fatigue and ensures a good user experience.

[0035] In one embodiment of the present invention, when adjusting the position and / or shape of at least one corresponding adjustment component 131 in segments, the adjustment module 130 is used to: adjust the extension stroke of at least one electric push rod 1312 to adjust the protrusion height of at least one independent support 1311 relative to the chair back; and / or adjust the rotation stroke of the angle adjustment motor 1313 to adjust the overall tilt angle of the chair back.

[0036] Specifically, according to the ergonomic chair 100 of the present invention, the adjustment module 130 adjusts the extension stroke of at least one electric push rod 1312 to correspondingly adjust the protrusion height of at least one independent support part 1311 relative to the chair back; and / or, adjusts the rotation stroke of the angle adjustment motor 1313 to adjust the overall tilt angle of the chair back; thereby, the adjustment module 130 can relax tense muscle groups by segmentally adjusting the position and / or shape of at least one corresponding adjustment component 131, which helps users quickly relieve fatigue and ensures a good user experience.

[0037] In one embodiment of the present invention, the adjustment module 130 further includes: at least one set of air pressure massage units 132, disposed on the back of the chair corresponding to at least one target muscle group, the at least one set of air pressure massage units 132 being used to perform pulse massage on at least one target muscle group on the user's back; when determining the tense muscle group and its corresponding at least one adjustment component 131 according to the adjustment signal, and adjusting the position and / or shape of at least one corresponding adjustment component 131 in segments, the adjustment module is further used to: determine the tense muscle group and its corresponding air pressure massage unit 132 according to the adjustment signal, and adjust the pulse frequency of at least one set of corresponding air pressure massage units 132 in segments to perform pulse massage on the tense muscle group.

[0038] In a specific embodiment, the adjustment module 130 further includes at least one set of air pressure massage units 132. The adjustment module 130 determines the tense muscle groups and their corresponding air pressure massage units 132 according to the adjustment signal, and adjusts the pulse frequency of at least one set of corresponding air pressure massage units 132 in segments to perform pulse massage on the tense muscle groups. Specifically, for example, if the adjustment signal determines that the tension of a certain muscle group is high, the pulse frequency of the corresponding air pressure massage unit 132 can be increased to perform targeted pulse massage on the tense muscle group.

[0039] Specifically, according to the ergonomic chair 100 of the present invention, the adjustment module 130 further includes at least one set of air pressure massage units 132. The adjustment module 130 determines the tense muscle groups and their corresponding air pressure massage units 132 according to the adjustment signal, and adjusts the pulse frequency of at least one set of corresponding air pressure massage units 132 in segments to perform pulse massage on the tense muscle groups. In this way, the adjustment module 130 can also perform precise pulse massage on the tense muscle groups, promote blood circulation in the tense muscle groups, help users further relieve fatigue, and ensure a good user experience.

[0040] In one embodiment of the present invention, after determining the tense muscle group and its corresponding at least one adjustment component 131 according to the adjustment signal, and adjusting the position and / or morphological state of at least one corresponding adjustment component 131 in segments, the adjustment module 130 is further configured to: when the tense muscle group is still in a tense state according to the adjustment signal after the segmented adjustment has reached a preset time, and the position and / or morphological state of at least one corresponding adjustment component 131 is determined to be in a tense state according to the adjustment signal, until the tense muscle group is no longer in a tense state according to the adjustment signal, wherein, during the iterative adjustment, the adjustment amplitude of at least one corresponding adjustment component 131 is controlled to be less than the adjustment amplitude of the adjustment component 131 in the previous adjustment.

[0041] In a specific embodiment, after a preset duration of segmented adjustment, if the adjustment module 130 determines that the tense muscle group is still in a tense state based on the adjustment signal, it iteratively adjusts the position and / or morphological state of at least one corresponding adjustment component 131 until the adjustment signal determines that the tense muscle group is no longer in a tense state. Specifically, during iterative adjustment, the adjustment amplitude of at least one corresponding adjustment component 131 is controlled to be less than the adjustment amplitude of the previous adjustment, for example, 80% of the previous adjustment amplitude. The preset duration is set as needed, for example, 5 minutes.

[0042] Specifically, according to the ergonomic chair 100 of the present invention, when the segmented adjustment reaches a preset time, the adjustment module 130 determines that the tense muscle group is still in a tense state according to the adjustment signal, and iteratively adjusts the position and / or shape state of at least one corresponding adjustment component 131 until it is determined according to the adjustment signal that the tense muscle group is no longer in a tense state; in this way, the adjustment module 130 adjusts the tense muscles in an iterative manner, and the amplitude of each iteration adjustment is smaller than the previous one, thereby helping to ensure effective muscle relief.

[0043] Figure 2 This is a structural schematic diagram of an ergonomic chair according to another embodiment of the present invention. Figure 2 As shown, in one embodiment of the present invention, the ergonomic chair 100 further includes: an environment adjustment module 140, used to adjust the lighting and / or sound and / or temperature and humidity of the environment in which the ergonomic chair 100 is located; after determining the tense muscle group and its corresponding at least one adjustment component 131 according to the adjustment signal, and adjusting the position and / or shape state of at least one corresponding adjustment component 131 in segments, the adjustment module 130 is further used to: when the tense muscle group is still in a tense state after the segmented adjustment reaches a preset time threshold, generate and send an environment adjustment signal to the environment adjustment module 140 according to the adjustment signal, so that the environment adjustment module 140 adjusts the lighting and / or sound and / or temperature and humidity of the environment in which the ergonomic chair 100 is located when it receives the environment adjustment signal.

[0044] In a specific embodiment, when the segmented adjustment reaches a preset duration threshold, if the adjustment module 130 determines that the tense muscle groups are still in a tense state based on the adjustment signal, it generates and sends an environmental adjustment signal to the environmental adjustment module 140. This causes the environmental adjustment module 140 to adjust the lighting and / or sound and / or temperature and humidity of the environment in which the ergonomic chair 100 is located upon receiving the environmental adjustment signal. Specifically, the environmental adjustment module 140 may include, but is not limited to, lighting, a humidifier, or a media player.

[0045] Specifically, according to the ergonomic chair 100 of the present invention, when the segmented adjustment reaches a preset time threshold, the adjustment module 130 determines that the tense muscle group is still in a tense state based on the adjustment signal, and generates and sends an environmental adjustment signal to the environmental adjustment module 140, so that the environmental adjustment module 140 adjusts the lighting and / or sound and / or temperature and humidity of the environment in which the ergonomic chair 100 is located when it receives the environmental adjustment signal; thus, when the adjustment module 130 relaxes the tense muscles, it can also change the environmental conditions through the environmental adjustment module 140 to assist in muscle relaxation.

[0046] Figure 3 This is a structural schematic diagram of an ergonomic chair according to yet another embodiment of the present invention. Figure 3As shown, in one embodiment of the present invention, the ergonomic chair 100 further includes: a power module 150 electrically connected to the monitoring module 110, the analysis module 120, and the adjustment module 130, the power module 150 being used to supply power to the monitoring module 110, the analysis module 120, and the adjustment module 130; and an interaction module 160 communicatively connected to the analysis module 120, the interaction module 160 being used to determine the tension state of the target muscle group based on the adjustment signal and to provide visual feedback on the tension state.

[0047] In a specific embodiment, the power module 150 supplies power to the monitoring module 110, the analysis module 120, and the adjustment module 130. The interaction module 160 determines the tension state of the target muscle group based on the adjustment signal and provides visual feedback on the tension state. Specifically, the power module 150 includes, for example, a lithium battery with a battery life of ≥12 hours and supports charging. The interaction module 160 includes, for example, a touch screen (integrated into the armrest) that can display muscle tension scores and major tension areas, and supports manual / automatic mode switching. The interaction module 160 also includes, for example, Bluetooth Low Energy for interaction with a mobile app, and can record muscle tension change curves and adjustment history.

[0048] Specifically, according to the ergonomic chair 100 of the present invention, the power module 150 is used to supply power to the monitoring module 110, the analysis module 120 and the adjustment module 130, and the interaction module 160 is used to determine the tension state of the target muscle group according to the adjustment signal and to visualize the tension state; thereby, the power module 150 ensures the reliability of the adjustment, and the interaction module 160 visualizes the tension state to facilitate the user's understanding of the muscle tension state.

[0049] In one embodiment of the present invention, when visual feedback shows a state of tension, the interaction module 160 is further configured to: generate historical muscle tension pattern data of the user based on the tension state of the visual feedback; predict the user's fatigue-prone periods and muscle groups based on the historical muscle tension pattern data; and generate and send a pre-adjustment signal to the adjustment module 130 during fatigue-prone periods, so that when the adjustment module 130 receives the pre-adjustment signal, it determines the muscle groups prone to tension and at least one corresponding adjustment component 131, and adjusts the position and / or morphological state of at least one corresponding adjustment component 131.

[0050] In a specific embodiment, the interaction module 160 first generates historical muscle tension pattern data of the user based on the tension state of the visual feedback. Then, based on the historical muscle tension pattern data, it predicts the user's fatigue-prone periods and muscle groups prone to tension. Next, during the fatigue-prone periods, it generates and sends a pre-adjustment signal to the adjustment module 130. This allows the adjustment module 130 to identify the muscle groups prone to tension and their corresponding at least one adjustment component 131 upon receiving the pre-adjustment signal, and to adjust the position and / or morphological state of at least one corresponding adjustment component 131. Specifically, for example, the user's historical muscle tension pattern data can be calculated using a big data model, and then the adjustment module 130 can be controlled to pre-adjust the adjustment component 131 during the fatigue-prone periods.

[0051] Specifically, according to the ergonomic chair 100 of the present invention, the interaction module 160 first generates historical muscle tension pattern data of the user based on the tension state of the visual feedback, and then predicts the user's fatigue-prone periods and muscle groups based on the historical muscle tension pattern data. Then, during the fatigue-prone period, a pre-adjustment signal is generated and sent to the adjustment module 130, so that when the adjustment module 130 receives the pre-adjustment signal, it determines the muscle groups that are prone to tension and at least one corresponding adjustment component 131, and adjusts the position and / or shape of at least one corresponding adjustment component 131. In this way, the interaction module 160 determines the user's historical muscle tension pattern data, predicts the user's fatigue-prone periods and muscle groups that are prone to tension, and controls the adjustment module 130 to pre-adjust the adjustment component 131 according to the muscle groups that are prone to tension during the fatigue-prone period, thereby helping to improve the efficiency and intelligence of the adjustment.

[0052] The ergonomic chair 100 of the above embodiments of the present invention will be further described below with reference to a specific embodiment. In this specific embodiment, an ergonomic chair and its adjustment method are provided.

[0053] Figure 3 This is a schematic diagram of an ergonomic chair according to a specific embodiment of the present invention, such as... Figure 3 As shown in this specific embodiment, the ergonomic chair includes an electromyography (EMG) signal monitoring module, a muscle tension analysis unit, a segmented adjustment actuator, and an interaction and power module.

[0054] In this specific embodiment, the electromyography (EMG) signal monitoring module includes an EMG sensor and a signal preprocessing unit. Specifically, the EMG sensor includes three sets of dry electrodes (22mm × 35mm in size), corresponding to the trapezius (shoulder), latissimus dorsi (upper back), and erector spinae (lumbar region), respectively. The signal acquisition frequency is 1kHz, and the common-mode rejection ratio is ≥80dB. The signal preprocessing unit includes a preamplifier (1000x gain) and a 5-500Hz bandpass filter (to remove power frequency interference), converting the EMG signal into a processable electrical signal.

[0055] In this specific embodiment, the muscle tension analysis unit includes a microprocessor and a tension localization module. Specifically, the microprocessor (MCU: ESP32) runs an electromyography feature extraction algorithm to calculate muscle activity intensity (0-100 points, with 60 points as the tension threshold) using the root mean square (RMS) value; the tension localization module locates the main tension areas based on the signal differences of the three sets of sensors (e.g., if the RMS value of the shoulder is greater than that of the waist by 20%, it is determined to be shoulder tension).

[0056] In this specific embodiment, the segmented adjustment actuator includes a segmented backrest design, an electric actuator assembly, and an angle fine-tuning motor. Specifically, the segmented backrest design is divided into a shoulder and back section (corresponding to the trapezius muscle), an upper back section (corresponding to the latissimus dorsi muscle), and a lumbar section (corresponding to the erector spinae muscle), each segment being independently adjustable; the electric actuator assembly includes three sets of miniature electric actuators (500N thrust, 20mm stroke), which respectively drive the height adjustment of each segment of the backrest (adjustment range 0-15mm); the angle fine-tuning motor includes one DC motor that controls the overall tilt angle of the backrest (90°-110°, adjustment accuracy ±1°), assisting in distributing pressure.

[0057] In this specific embodiment, the interaction and power module includes a touch display screen, a lithium battery, and Bluetooth Low Energy (BLE). Specifically, the touch display screen, integrated into the armrest, displays muscle tension scores and key tension areas, and supports manual / automatic mode switching; the lithium battery has a battery life of ≥12 hours and supports Type-C fast charging; the BLE is linked with a mobile app to record muscle tension change curves and adjustment history.

[0058] In this specific embodiment, the electromyography sensor uses dry electrodes, which can obtain good signal quality without the need for conductive gel. The measurement has the advantages of being non-invasive, non-traumatic, and simple to operate. It is connected to the signal preprocessing unit on the back of the chair. The analysis unit is connected to the actuator through internal wires (hidden in the chair back frame), and the signal transmission delay is adjusted to ≤200ms. The interaction module is installed at the front end of the right armrest, and the power module is built into the underside of the seat (removable and replaceable).

[0059] In this specific embodiment, the ergonomic chair is suitable for scenarios such as offices, design studios, and e-sports rooms where people need to maintain a sitting posture for a long time, and is especially suitable for people whose shoulders and backs are prone to fatigue (such as programmers and teachers).

[0060] like Figure 3 As shown in this specific embodiment, the adjustment method of the ergonomic chair includes the following steps: Step S1: Signal acquisition.

[0061] Specifically, after the user wears the sensor, the system collects three sets of electromyographic signals in real time. The preprocessing unit filters out noise and then transmits the signals to the analysis unit.

[0062] Step S2: Determine the level of tension.

[0063] Specifically, if the RMS value of a certain area of ​​electromyography is ≥60 points for 30 seconds (tension threshold), it is determined that the muscles in that area are tense; if the overall RMS value is ≥70 points, it is determined that the whole body is fatigued, triggering comprehensive regulation.

[0064] Step S3: Segmented adjustment.

[0065] Specifically, for shoulder tension: the electric push rod in the shoulder and back section extends (increasing shoulder support protrusion), while the backrest tilt angle is slightly adjusted back by 2° to distribute trapezius muscle pressure; for lower back tension: the push rod in the lumbar section extends (enhancing lumbar support), in conjunction with the retraction of the upper back section push rod (reducing back pressure); for overall fatigue: the three push rods work together to adjust the backrest tilt angle back by 5°, and push reminders to get up and move around via the APP.

[0066] Step S4: Feedback and Iteration.

[0067] Specifically, after adjustment, the electromyographic signal is continuously monitored. If the tension does not drop below 50 points within 5 minutes, the adjustment is repeated (with an amplitude of 80% of the first adjustment) until the target is reached. The display screen updates the adjustment progress and muscle status in real time.

[0068] In this specific embodiment, the ergonomic chair and its adjustment method can be further improved as follows: 1. Expanded adjustment function: Integrated air pressure massage module: Micro airbags are built into the segmented area of ​​the backrest. When muscles are tense, the push rod can be used to activate pulse massage (frequency 1-3Hz) to accelerate blood circulation; Linked environmental adjustment: When continuous tension is detected (>20 minutes), the brightness of indoor lights is automatically reduced (linked to smart lights) and white noise is played to assist relaxation; 2. Scene adaptation: Driving scenario version: Sensors are integrated into the headrest and lumbar support of the car seat, powered by the vehicle power supply. During rapid acceleration / braking, lumbar support is enhanced to reduce instantaneous muscle tension; Rehabilitation medical version: For patients with lumbar muscle strain, the tension threshold is lowered (adjustment is triggered at 40 minutes), and a gentler adjustment range (≤5mm / time) is adopted to avoid secondary injury.

[0069] As can be seen, in this specific embodiment, the intelligent seat and its control system have the following significant advantages compared with the prior art: 1. Improved precision and targeting of anti-fatigue regulation, unlike the indirect judgment of existing technologies (pressure, subjective feelings), it directly monitors muscle tension through electromyography signals; segmented regulation applies force precisely to different muscle groups, increasing the speed of local muscle tension reduction by 60% (compared to the overall regulation method).

[0070] 2. Improved timeliness and fatigue prevention: The improvement lies in the fact that adjustment is triggered after 30 seconds of continuous tension, allowing for intervention in the early stages of fatigue accumulation; dynamic iterative adjustment (a second adjustment is made if the fatigue is not relieved after 5 minutes) ensures effective relief of fatigue, with a success rate of 90%.

[0071] 3. User experience and adaptability optimization: Using dry electrodes, good signal quality can be obtained without conductive gel, thus featuring long lifespan and simple and convenient use, making it more suitable for ordinary users. The wire concealment design avoids interference with activities; automatic / manual dual modes adapt to different needs (such as automatic adjustment when focusing on work, and manual fine-tuning when resting); record personal muscle tension patterns through the APP to generate personalized adjustment plans.

[0072] 4. System stability and safety are guaranteed. The high common-mode rejection ratio (≥80dB) of the electromyography signal preprocessing unit ensures signal stability in offices with complex electromagnetic environments (such as near computers and air conditioners). The electric actuator has a built-in limit switch (to prevent overextension) and an adjustment speed of ≤2mm / s (to avoid discomfort caused by excessively fast movements). Its safety is superior to traditional motors without protection design.

[0073] In summary, the ergonomic chair 100 according to an embodiment of the present invention includes a monitoring module 110, an analysis module 120, and an adjustment module 130. The monitoring module 110 is used to collect electromyographic signals of at least one target muscle group on the user's back and preprocess the electromyographic signals. The analysis module 120 is used to determine the tension state of at least one target muscle group on the user's back based on the preprocessed electromyographic signals, locate the main tension area based on the tension state of at least one target muscle group, and generate corresponding adjustment signals based on the tension state and the main tension area. The adjustment module 130 is used to determine the tense muscle group and its corresponding at least one adjustment component 131 based on the adjustment signals, and adjust the position and / or shape of at least one corresponding adjustment component 131 in segments to relax the tense muscle group. That is, the ergonomic chair 100 directly monitors muscle tension through electromyographic signals and adjusts in segments according to muscle tension, thereby applying force precisely to different muscle groups, causing local muscle tension to decrease rapidly, helping users to quickly relieve fatigue and ensuring a good user experience.

[0074] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0075] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0076] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An ergonomic chair, characterized in that, include: The monitoring module is used to collect electromyographic signals from at least one target muscle group on the user's back and to preprocess the electromyographic signals. An analysis module, electrically connected to the monitoring module, is used to determine the tension state of at least one target muscle group in the user's back based on the preprocessed electromyographic signal, locate the main tension area based on the tension state of at least one target muscle group, and generate a corresponding adjustment signal based on the tension state and the main tension area. An adjustment module, electrically connected to the analysis module, includes at least one adjustment component corresponding to at least one target muscle group. The position and / or morphological state of each adjustment component is variable. The adjustment module is used to determine the tense muscle group and its corresponding at least one adjustment component according to the adjustment signal, and to adjust the position and / or morphological state of at least one corresponding adjustment component in a segmented manner to relax the tense muscle group.

2. The ergonomic chair according to claim 1, characterized in that, The monitoring module includes: At least one set of electromyography (EMG) sensors are applied to target muscle groups on the user's back, and the at least one set of EMG sensors is used to collect EMG signals from at least one target muscle group on the user's back. A signal processing unit is electrically connected to at least one group of the electromyography (EMG) sensors. The signal processing unit is used to preprocess the EMG signals, wherein the preprocessing includes at least signal amplification and filtering.

3. The ergonomic chair according to claim 2, characterized in that, When determining the tension state of at least one target muscle group in the user's back based on the preprocessed electromyographic signals, and locating the main tension area based on the tension state of at least one target muscle group, the analysis module is used to: For each group of electromyographic sensors, the root mean square value of the preprocessed electromyographic signals is calculated as a feature value reflecting the intensity of the corresponding muscle activity, and the corresponding tension score is determined based on the feature value. When the duration for which the tension score corresponding to any target muscle group reaches the preset tension threshold reaches the preset duration, the muscle tension of that target muscle group is determined. By comparing the differences in tension scores among different target muscle groups, the main areas of tension can be located.

4. The ergonomic chair according to claim 1, characterized in that, The adjustment component includes: An independent support is provided on the back of the ergonomic chair at a position corresponding to the target muscle group, and the height of the protrusion of the independent support relative to the back of the chair is adjustable; An electric push rod is connected to the independent support part, and the electric push rod is used to adjust the protrusion height of the independent support part relative to the chair back; An angle adjustment motor is used to adjust the overall tilt angle of the chair back.

5. The ergonomic chair according to claim 4, characterized in that, When adjusting the position and / or shape of at least one corresponding adjustment component in a segmented manner, the adjustment module is used to: Adjust the extension stroke of at least one of the electric push rods to correspondingly adjust the protrusion height of at least one of the independent support parts relative to the chair back; And / or, Adjust the rotation stroke of the angle adjustment motor to adjust the overall tilt angle of the chair back.

6. The ergonomic chair according to claim 4, characterized in that, The adjustment module further includes: At least one set of air pressure massage units is disposed on the back of the chair at a position corresponding to at least one of the target muscle groups, and the at least one set of air pressure massage units is used to perform pulse massage on at least one of the target muscle groups on the user's back. When determining the tense muscle group and its corresponding at least one adjustment component based on the adjustment signal, and adjusting the position and / or morphological state of at least one corresponding adjustment component in a segmented manner, the adjustment module is further configured to: The tense muscle groups and their corresponding air pressure massage units are determined according to the adjustment signal, and the pulse frequency of at least one set of corresponding air pressure massage units is adjusted in segments to perform pulse massage on the tense muscle groups.

7. The ergonomic chair according to claim 1, characterized in that, After determining the tense muscle group and its corresponding at least one adjustment component based on the adjustment signal, and adjusting the position and / or morphological state of at least one corresponding adjustment component in a segmented manner, the adjustment module is further configured to: When the segmented adjustment reaches a preset duration, and the adjustment signal determines that the tense muscle group is still in a tense state, the position and / or morphological state of at least one corresponding adjustment component is iteratively adjusted until the adjustment signal determines that the tense muscle group is no longer in a tense state. During the iterative adjustment, the adjustment amplitude of at least one corresponding adjustment component is controlled to be less than the adjustment amplitude of the adjustment component in the previous adjustment.

8. The ergonomic chair according to claim 1, characterized in that, Also includes: An environmental control module is used to adjust the lighting and / or sound and / or temperature and humidity of the environment in which the ergonomic chair is located; After determining the tense muscle group and its corresponding at least one adjustment component based on the adjustment signal, and adjusting the position and / or morphological state of at least one corresponding adjustment component in a segmented manner, the adjustment module is further configured to: When the segmented adjustment reaches the preset time threshold, and the tense muscle group is still in a tense state according to the adjustment signal, an environmental adjustment signal is generated and sent to the environmental adjustment module, so that the environmental adjustment module adjusts the lighting and / or sound and / or temperature and humidity of the environment where the ergonomic chair is located when it receives the environmental adjustment signal.

9. The ergonomic chair according to claim 1, characterized in that, Also includes: A power supply module is electrically connected to the monitoring module, the analysis module, and the adjustment module, and the power supply module is used to supply power to the monitoring module, the analysis module, and the adjustment module; An interaction module is communicatively connected to the analysis module. The interaction module is used to determine the tension state of the target muscle group based on the adjustment signal and to provide visual feedback on the tension state.

10. The ergonomic chair according to claim 9, characterized in that, When providing visual feedback on the state of tension, the interaction module is also used to: Based on the tension state described in the visual feedback, the user's historical muscle tension pattern data is generated; Based on the historical muscle tension pattern data, predict the user's periods of fatigue and muscle groups prone to tension; During the fatigue-prone period, a pre-adjustment signal is generated and sent to the adjustment module, so that when the adjustment module receives the pre-adjustment signal, it identifies the muscle group prone to tension and at least one corresponding adjustment component, and adjusts the position and / or morphological state of at least one corresponding adjustment component.

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