Brain-computer interface signal acquisition terminal

Abstract

The utility model provides a brain-computer interface signal acquisition terminal, which comprises an annular main body, an electrode assembly and a data transmission assembly, and is characterized in that the inner edge of the annular main body is provided with an abutting surface, and at least part of the abutting surface is suitable for being attached to the head of a human body; the electrode assembly is arranged on the side, in the first direction, of the abutting face, the first direction is the radial direction of the annular body, one end of the electrode assembly is connected with the annular body in a swinging mode, and the other end of the electrode assembly extends towards the inner side of the annular body to obtain electroencephalogram signals; the data transmission assembly is arranged on the annular main body, and the data transmission assembly is electrically connected with the electrode assembly, so that the electroencephalogram signals are output through the data transmission assembly. The brain-computer interface signal acquisition terminal provided by the embodiment of the utility model has the advantages of being high in adaptability and convenient to wear by a user.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electroencephalogram measurement, and more particularly relates to a brain-computer interface signal acquisition terminal. BACKGROUND

[0002] An electroencephalogram is obtained by amplifying and recording spontaneous bioelectric potentials of the brain on the scalp through a precise electronic instrument, and is spontaneous and rhythmic electrical activity of brain cell groups recorded by electrodes. A brain-computer interface needs to be worn on the head of a human body to obtain brain wave signals of the human body, and an electroencephalogram is obtained by analyzing the brain wave signals. However, the brain-computer interface structure in the related art has poor adaptability and is inconvenient for a user to wear. CONTENT OF THE UTILITY MODEL

[0003] The application aims to provide a brain-computer interface signal acquisition terminal to solve the technical problem of poor adaptability and inconvenience for a user to wear in the prior art.

[0004] To achieve the above-mentioned purpose, the application provides a brain-computer interface signal acquisition terminal.

[0005] The brain-computer interface signal acquisition terminal provided by the application comprises a ring-shaped main body, an abutting surface is arranged on the inner edge of the ring-shaped main body, and at least part of the abutting surface is adapted to be attached to the head of a human body; an electrode assembly is arranged on one side of the abutting surface in a first direction, the first direction is the radial direction of the ring-shaped main body, one end of the electrode assembly is swingably connected to the ring-shaped main body, and the other end of the electrode assembly extends towards the inner side of the ring-shaped main body to obtain brain electrical signals; and a data transmission assembly is arranged on the ring-shaped main body, and the data transmission assembly is electrically connected to the electrode assembly to output the brain electrical signals through the data transmission assembly.

[0006] The brain-computer interface signal acquisition terminal provided by the application has the advantages that, compared with the prior art, the electrode assembly of the brain-computer interface signal acquisition terminal provided by the application can swing relative to the ring-shaped main body, so that the brain-computer interface signal acquisition terminal provided by the application is suitable for the head profiles of different users by adjusting the angle of the swing of the electrode assembly relative to the ring-shaped main body when the brain-computer interface signal acquisition terminal is worn by multiple users, and thus the brain-computer interface signal acquisition terminal provided by the application has the advantages of high adaptability and convenience for a user to wear.

[0007] Optionally, an elastic member is arranged between the electrode assembly and the ring-shaped main body, the elastic member extends in the radial direction of the ring-shaped main body, the elastic member can be bent in the axial direction of the ring-shaped main body, and the elastic member can be bent in the tangential direction of the ring-shaped main body.

[0008] Optionally, the elastic member is in a cylindrical structure, the annular body is provided with an annular groove, and an axial end of the elastic member is fitted into the annular groove; the electrode assembly comprises a shell and a contact portion, the contact portion is arranged at an end of the shell away from the annular body, and the other axial end of the elastic member penetrates through the shell and extends into the shell.

[0009] An end of the elastic member extending into the shell is provided with an annular flange, and the annular flange is clamped to an inner wall of the shell.

[0010] Optionally, the contact portion is detachably connected to the shell; and / or,

[0011] The contact portion has a plurality of contact portions, and the plurality of contact portions are arranged along a tangential direction of the annular body and arranged in the shell.

[0012] Optionally, the electrode assembly has a plurality of electrode assemblies, and the plurality of electrode assemblies are arranged symmetrically in a second direction, the second direction is orthogonal to the first direction, and the second direction is another radial direction of the annular body.

[0013] Optionally, the annular body comprises a fixed assembly and an adjusting assembly, the electrode assembly and the data transmission assembly are arranged in the fixed assembly, the adjusting assembly comprises a first end and a second end, one end of the fixed assembly is connected to the first end, and the other end of the fixed assembly is connected to the second end, so that the fixed assembly and the adjusting assembly jointly form the annular body.

[0014] The size of the adjusting assembly between the first end and the second end is adjustable, so as to adjust the inner diameter of the annular body.

[0015] Optionally, the adjusting assembly comprises a support, a first rack, a second rack and a gear, the gear is rotatably arranged in the support, the first rack and the second rack are movably arranged in the support along a tangential direction of the annular body, an end of the first rack away from the support forms the first end, an end of the second rack away from the support forms the second end, the first rack and the second rack are respectively arranged on opposite sides of the gear along a direction orthogonal to the tangential direction of the annular body, and the gear is connected to the first rack and the second rack by meshing.

[0016] Optionally, the fixed assembly comprises a body, a first loudspeaker and a second loudspeaker, the first loudspeaker is arranged at an end of the body close to the first end, the second loudspeaker is arranged at an end of the body close to the second end, and the first loudspeaker and the second loudspeaker are oppositely arranged along a second direction.

[0017] And / or, the fixing assembly comprises a body, a first ear clip and a second ear clip, the first ear clip is arranged at an end of the body close to the first end, the first ear clip is provided with a first contact point, the first contact point is electrically connected with the data transmission assembly, the second ear clip is arranged at an end of the body close to the second end, the second ear clip is provided with a second contact point, the second contact point is electrically connected with the data transmission assembly.

[0018] Optionally, the annular body is provided with an inner liner, the inner liner is detachably arranged at the abutting surface.

[0019] Optionally, the brain-computer interface signal acquisition terminal further comprises a data storage assembly, the data storage assembly is detachably arranged at the annular body, and the data storage assembly is electrically connected with the data transmission assembly to store the electroencephalogram signals. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 Structure diagram of the brain-computer interface signal acquisition terminal provided by the embodiment of the present application Figure 1

[0022] Figure 2 Structure diagram of the brain-computer interface signal acquisition terminal provided by the embodiment of the present application Figure 2

[0023] Figure 3 For Figure 2 the partial sectional view of A-A in FIG. 1;

[0024] Figure 4 For Figure 2 the partial sectional view of B-B in FIG. 1;

[0025] Figure 5 Schematic diagram of the adjusting assembly of the brain-computer interface signal acquisition terminal provided by the embodiment of the present application

[0026] Figure 6 Structure diagram of the brain-computer interface signal acquisition terminal provided by another embodiment of the present application Figure 1

[0027] Figure 7 Structure diagram of the brain-computer interface signal acquisition terminal provided by another embodiment of the present application Figure 2 ​​​​

[0028] Figure 8 Structure diagram of brain-computer interface signal acquisition terminal provided for another embodiment of the application Figure 3 ;

[0029] Figure 9 For Figure 8 Local section view diagram at C-C in FIG. 1.

[0030] In the drawings, various reference signs have the following meanings:

[0031] 100, brain-computer interface signal acquisition terminal;

[0032] 10, annular main body; 11, fixing assembly; 111, abutting surface; 112, clamping groove; 12, adjusting assembly; 121, support; 122, gear; 123, first rack; 124, second rack; 125, first end; 126, second end;

[0033] 20, electrode assembly; 21, shell; 211, positioning groove; 22, contact part;

[0034] 30, data transmission assembly; 31, wire;

[0035] 40, elastic member;

[0036] 50, inner liner;

[0037] 60, second loudspeaker. DETAILED DESCRIPTION

[0038] In order to make the technical problems to be solved by the application, the technical solutions and the beneficial effects clearer, the application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the application and not to limit the application.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0040] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0041] In addition, the terms "first", "second", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an indicated number of technical features. Thus, features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0042] The brain-computer interface signal acquisition terminal 100 provided by the present application can be used to obtain the electroencephalogram signal of the user's head.

[0043] Please refer to Figure 1 and Figure 2 , now the brain-computer interface signal acquisition terminal 100 provided by the embodiment of the present application will be described.

[0044] It should be noted that the first direction mentioned below is the x direction shown in the figure, the second direction mentioned below is the y direction shown in the figure, and the third direction mentioned below is the z direction shown in the figure.

[0045] The brain-computer interface signal acquisition terminal 100 provided by the embodiment of the present application comprises a ring-shaped main body 10, an electrode assembly 20 and a data transmission assembly 30.

[0046] The inner edge of the ring-shaped main body 10 is provided with an abutting surface 111, and at least part of the abutting surface 111 can be attached to the human head to fix the ring-shaped main body 10 on the outer circumferential side of the human head.

[0047] As shown in Figure 1 and Figure 2 , the ring-shaped main body 10 is a hollow ring structure, which can be sleeved on the outside of the human head, and the abutting surface 111 is attached to the outer contour of the human head, so that part of the abutting surface 111 can abut on the outer contour of the human head.

[0048] The electrode assembly 20 is arranged on one side of the abutting surface 111 along the first direction x, which is any radial direction of the ring-shaped main body 10. One end of the electrode assembly 20 facing the ring-shaped main body 10 is swingably connected to the ring-shaped main body 10, and the other end of the electrode assembly 20 away from the ring-shaped main body 10 extends towards the inside of the ring-shaped main body 10 and is adapted to contact the human head skin to obtain the electroencephalogram signal.

[0049] As shown in Figure 1 and Figure 2 , the electrode assembly 20 is arranged on the inside of the ring-shaped main body 10, and when the ring-shaped main body 10 is sleeved on the outer circumferential side of the human head, the electrode assembly 20 can contact the human head, so that the electrode assembly 20 can obtain the spontaneous bioelectric potential of the human brain from the human scalp, thereby obtaining the electroencephalogram signal of the human brain.

[0050] The electrode assembly 20 is swingably connected with the annular body 10, so that the angle of the electrode assembly 20 swinging relative to the annular body 10 is adjustable. When the brain-computer interface signal acquisition terminal 100 provided by the application is worn on the head of different users, the electrode assembly 20 can be self-adaptively adjusted according to the fitting condition of the electrode assembly 20 with the head of the user, so that the end of the electrode assembly 20 away from the annular body 10 is fitted with the head of the user.

[0051] The data transmission assembly 30 is arranged on the annular body 10, and the data transmission assembly 30 is electrically connected with the electrode assembly 20, so as to output the electroencephalogram signal through the data transmission assembly 30.

[0052] As shown in Figure 1 and Figure 2 , at least part of the data transmission assembly 30 is located inside the annular body 10. The data transmission assembly 30 is electrically connected with the electrode assembly 20. The electrode assembly 20 detects the spontaneous bioelectric potential of the brain on the scalp of the human body, and the electroencephalogram signal obtained from the human body is an analog signal. The data transmission assembly 30 converts the electroencephalogram signal obtained from the human body by the electrode assembly 20 into a digital signal through analog-digital conversion, and inputs the electroencephalogram signal to the outside through the data transmission assembly 30.

[0053] In some embodiments, the data transmission assembly 30 includes a main board (not shown in the figure) and a wire 31. The main board is located on the inner side of the annular body 10, as shown in Figure 2 One end of the wire 31 is electrically connected with the main board, and the other end of the wire 31 penetrates through the annular body 10 and extends to the outer side of the annular body 10, so as to facilitate the reading device to read the electroencephalogram signal from the data transmission assembly 30.

[0054] The brain-computer interface signal acquisition terminal 100 provided by the application has the advantages that, compared with the prior art, the electrode assembly 20 of the brain-computer interface signal acquisition terminal 100 provided by the application can swing relative to the annular body 10. When the brain-computer interface signal acquisition terminal 100 provided by the application is worn by multiple users, the angle of the electrode assembly 20 swinging relative to the annular body 10 is adjusted, so that the brain-computer interface signal acquisition terminal 100 provided by the application is suitable for the head profiles of different users, thereby making the brain-computer interface signal acquisition terminal 100 provided by the application have the advantages of higher adaptability and being convenient for the user to wear.

[0055] In some embodiments provided by the application, an elastic member 40 is arranged between the electrode assembly 20 and the annular body 10. The elastic member 40 extends along the radial direction of the annular body 10. The elastic member 40 can be bent along the axial direction of the annular body 10, and the elastic member 40 can be bent along the tangential direction of the annular body 10.

[0056] As shown in Figure 2 and Figure 3As shown, the electrode assembly 20 is connected with the annular body 10 through the elastic member 40, the elastic member 40 extends along the radial direction of the annular body 10, that is, one end of the elastic member 40 is connected with the inner edge of the annular body 10, and the other end of the elastic member 40 extends to the inner side of the annular body 10 and is connected with the electrode assembly 20.

[0057] In some embodiments, the elastic member 40 is made of rubber, spring or other materials that can be bent and stretched. In this way, the elastic member 40 can be bent along the third direction z, and the elastic member 40 can be bent along the tangential direction of the annular body 10.

[0058] In this way, on the one hand, the angle of the electrode assembly 20 relative to the annular body 10 can be adjusted by bending the elastic member 40, so that the electrode assembly 20 can adapt to the head shape of different users, and on the other hand, the elastic member 40 can restore the initial shape when the external force is removed, so that the electrode assembly 20 can be reset when the user takes off the brain-computer interface signal acquisition terminal 100.

[0059] In some embodiments, as shown in the drawings, Figure 3 The elastic member 40 is a cylindrical structure, and the elastic member 40 is made of rubber. In this way, on the one hand, the bending resistance of the elastic member 40 is reduced, which facilitates the bending of the elastic member 40, and on the other hand, the rigidity of the elastic member 40 when the external force is removed is improved, which facilitates the driving of the electrode assembly 20 to reset after the user takes off the brain-computer interface signal acquisition terminal 100.

[0060] In other embodiments, the electrode assembly 20 and the annular body 10 are connected through a ball joint.

[0061] In some embodiments provided in the present application, the electrode assembly 20 includes a shell 21 and a contact portion 22, the shell 21 is connected with the annular body 10, and the contact portion 22 is arranged at the end of the shell 21 away from the annular body 10.

[0062] As shown in the drawings, Figure 2 and Figure 3 The contact portion 22 is arranged on the shell 21, the shell 21 is used to support the contact portion 22 and connect the contact portion 22 with the annular body 10, and in some embodiments, the elastic member 40 is connected between the shell 21 and the annular body 10.

[0063] In other embodiments provided in the present application, the contact portion 22 and the shell 21 are detachably connected.

[0064] As shown in the drawings, Figure 6 , Figure 8 and Figure 9As shown, the contact part 22 is an electrode patch, the shell 21 is provided with a positioning groove 211, the contact part 22 is provided with a positioning pin (not shown in the figure) at one end thereof facing the shell 21, and the contact part 22 is provided with an electrode (not shown in the figure) at the side thereof away from the shell 21, the positioning pin can be assembled into the positioning groove 211, so that the contact part 22 is detachably connected with the shell 21.

[0065] Therefore, when the brain-computer interface signal acquisition terminal 100 provided by the application is switched between different users, the contact part 22 that has not been used is replaced after being used by the previous user for use by the next user, on the one hand, cross infection is avoided by replacing the contact part 22, and on the other hand, the conductive characteristics of the contact part 22 are prevented from changing after being used, the brain-computer interface signal acquisition terminal 100 provided by the application has higher safety and detection accuracy by being provided with the detachable and replaceable contact part 22.

[0066] In some embodiments provided by the application, the contact part 22 is provided in plurality, and the plurality of contact parts 22 are arranged along the tangential direction of the annular body 10 in the shell 21.

[0067] As shown in the first direction x in the figure, Figure 1 As shown, a plurality of contact parts 22 are provided on one shell 21, and the plurality of contact parts 22 are arranged along the extension direction of the annular body 10. The plurality of contact parts 22 provided on the same shell 21 are relatively close, and the shape of the human head profile changes relatively gently, so that the plurality of contact parts 22 on the same shell 21 can be attached to the human head.

[0068] Therefore, by providing a plurality of contact parts 22 on the same shell 21, the number of shells 21 can be reduced, thereby reducing the cost and failure rate of the brain-computer interface signal acquisition terminal 100 provided by the application.

[0069] In some embodiments provided by the application, the electrode assembly 20 is provided in plurality, and the plurality of electrode assemblies 20 are symmetrically arranged in a second direction y, the second direction y is orthogonal to the first direction x, and the second direction y is another radial direction of the annular body 10.

[0070] As shown in the first direction x in the figure, Figure 1 As shown, the plurality of electrode assemblies 20 are provided on the abutting surface 111, and the plurality of electrode assemblies 20 are distributed along the circumferential direction of the annular body 10, when a user wears the brain-computer interface signal acquisition terminal 100 provided by the application, Figure 1 The first direction x in the figure is the front-back direction, Figure 1 The second direction y in the figure is the front-back direction, the plurality of electrode assemblies 20 are provided on the front side of the inner edge of the annular body 10 along the first direction x, and the plurality of electrode assemblies 20 are symmetrically distributed about the yOz plane shown in the figure, so that the plurality of electrode assemblies 20 are symmetrically distributed along the left-right direction when used by the user. Figure 1 The plurality of electrode assemblies 20 are symmetrically distributed about the yOz plane shown in the figure, so that the plurality of electrode assemblies 20 are symmetrically distributed along the left-right direction when used by the user.

[0071] Therefore, by arranging multiple electrode assemblies 20, the brain-computer interface signal acquisition terminal 100 provided by the application can capture spontaneous bioelectric potentials of the brain on the surface of the forehead of a user and form an electroencephalogram signal.

[0072] In some embodiments provided by the application, the annular body 10 comprises a fixing assembly 11 and an adjusting assembly 12, the electrode assembly 20 and the data transmission assembly 30 are arranged on the fixing assembly 11, the adjusting assembly 12 comprises a first end 125 and a second end 126, one end of the fixing assembly 11 is connected to the first end 125, and the other end of the fixing assembly 11 is connected to the second end 126, so that the fixing assembly 11 and the adjusting assembly 12 jointly form the annular body 10.

[0073] The adjusting assembly 12 is adjustable in size between the first end 125 and the second end 126, so as to adjust the inner diameter of the annular body 10.

[0074] As shown in Figure 1 and Figure 5 , the annular body 10 comprises the fixing assembly 11 and the adjusting assembly 12 arranged oppositely along the first direction x, when a user uses the brain-computer interface signal acquisition terminal 100 provided by the application, the fixing assembly 11 is located on the front side of the head of the user along the first direction x, and the adjusting assembly 12 is located on the rear side of the head of the user along the first direction x.

[0075] Therefore, the annular body 10 is formed by the fixing assembly 11 and the adjusting assembly 12, the length of the adjusting assembly 12 between the first end 125 and the second end 126 is adjustable, the inner diameter of the annular body 10 is adjusted by changing the circumference of the annular body 10, so that the annular body 10 can be adapted to the head circumference of different users, and the brain-computer interface signal acquisition terminal 100 provided by the application has the advantages of higher adaptability and convenience for the user to wear.

[0076] In some embodiments provided by the application, the adjusting assembly 12 comprises a support 121, a first rack 123, a second rack 124 and a gear 122, the gear 122 is rotatably arranged on the support 121, the first rack 123 and the second rack 124 are movably arranged on the support 121 along the tangential direction of the annular body 10, the end of the first rack 123 away from the support 121 forms the first end 125, the end of the second rack 124 away from the support 121 forms the second end 126, the first rack 123 and the second rack 124 are respectively arranged on opposite sides of the gear 122 along the direction orthogonal to the tangential direction of the annular body 10, and the gear 122 is connected to the first rack 123 and the second rack 124 by meshing.

[0077] As shown in Figure 4As shown, the axis of gear 122 extends along the first direction x. The first rack 123 meshes with gear 122 on one side along the third direction z, and the second rack 124 meshes with gear 122 on the other side along the third direction z. The first rack 123 and the second rack 124 are arranged opposite each other along the radial direction of gear 122, and gear 122 meshes with both the first rack 123 and the second rack 124 simultaneously. When gear 122 rotates, the first rack 123 and the second rack 124 move in opposite directions and at the same speed, so as to adjust the distance between the first end 125 and the second end 126 by rotating gear 122.

[0078] Therefore, by rotating gear 122, the distance between the first end 125 and the second end 126 in the circumferential direction of the annular body 10 is adjusted, so that the length of the adjusting component 12 is adjustable, thereby adjusting the inner diameter of the annular body 10 to fit the head circumference of different users.

[0079] In some embodiments provided in this application, the fixing component 11 includes a body, a first speaker and a second speaker 60. The first speaker is disposed at the end of the body near the first end 125, and the second speaker 60 is disposed at the end of the body near the second end 126. The first speaker and the second speaker 60 are arranged opposite to each other along the second direction y.

[0080] like Figure 1 As shown, when a user wears the brain-computer interface signal acquisition terminal 100 provided in this application, the first speaker and the second speaker 60 are located on the left and right sides of the user along the second direction y, respectively, with the first speaker close to the user's left ear and the second speaker 60 close to the user's right ear. The first speaker and the second speaker 60 are electrically connected to the data transmission component 30, and the external audio signals are transmitted to the first speaker and the second speaker 60 through the data transmission component 30.

[0081] Therefore, on the one hand, the user experience can be improved by setting the first speaker and the second speaker 60, and on the other hand, the brain-computer interface signal acquisition terminal 100 provided in this application can detect the user's brain signals under different sound stimuli.

[0082] In some embodiments provided in this application, the fixing component 11 includes a body, a first ear clip 71 and a second ear clip 72. The first ear clip 71 is disposed at the end of the body near the first end 125 and has a first contact point electrically connected to the data transmission component 30. The second ear clip 72 is disposed at the end of the body near the second end 126 and has a second contact point electrically connected to the data transmission component 30.

[0083] like Figure 1As shown, when the user wears the brain-computer interface signal acquisition terminal 100 provided in the present application, the first ear clip 71 and the second ear clip 72 are respectively located on the left and right sides of the user along the second direction y, and the first ear clip 71 can be clamped on the left ear of the user, the second ear clip 72 can be clamped on the right ear of the user, the first contact can be in contact with the skin of the left ear of the user, the second contact can be in contact with the skin of the right ear of the user, and the first contact and the second contact are electrically connected with the data transmission component 30.

[0084] Therefore, the reference potential is transmitted to the data transmission component 30 through the first contact and the second contact, so as to improve the accuracy of the brain electrical signal measured by the electrode assembly 20, thereby improving the measurement accuracy of the brain-computer interface signal acquisition terminal 100 provided in the present application.

[0085] In some embodiments provided in the present application, the annular main body 10 is provided with an inner liner 50, and the inner liner 50 is detachably arranged on the abutting surface 111.

[0086] The inner liner 50 is arranged on the abutting surface 111, and the inner liner 50 is arranged away from the electrode assembly 20, and the side of the inner liner 50 away from the annular inner liner 50 is made of flexible material, so as to improve the comfort of the user when wearing the brain-computer interface signal acquisition terminal 100 provided in the present application.

[0087] The inner liner 50 is detachably connected with the annular main body 10, and in some embodiments, the inner liner 50 is detachably connected with the annular main body 10 by any one or more of the following modes: magic tape, snap, magnetic attraction, and adhesive, so as to facilitate the replacement and cleaning of the inner liner 50 from the annular main body 10.

[0088] In some embodiments, the inner liner 50 is arranged on the fixing component 11, so as to improve the comfort of the user on the left and right sides of the head when wearing the brain-computer interface signal acquisition terminal 100 provided in the present application.

[0089] In another embodiment, as shown in Figure 2 and Figure 4 The inner liner 50 is arranged on the side of the bracket 121 of the adjusting component 12 facing the fixing component 11 along the first direction x, so as to improve the comfort of the user on the back of the head when wearing the brain-computer interface signal acquisition terminal 100 provided in the present application.

[0090] In some embodiments provided in the present application, the brain-computer interface signal acquisition terminal 100 further comprises a data storage component, which is detachably arranged on the annular main body 10, and the data storage component is electrically connected with the data transmission component 30 to store the brain electrical signal.

[0091] As shown in Figure 7As shown, the surface of the annular body 10 is provided with a card slot 112, and the data storage assembly includes a storage card (not shown in the figure), which is detachably assembled into the card slot 112, so that the storage card can be electrically connected with the data transmission assembly 30, and the brain electrical signals obtained by the electrode assembly 20 from the user's head can be transmitted to the storage card through the data transmission assembly 30, so as to save the brain electrical signals of the user in the storage card, and the storage card can be taken out to read the brain electrical signals of the user in a reading device.

[0092] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A brain-computer interface signal acquisition terminal, characterized by, The application relates to a brain wave signal acquisition device, which comprises the following parts: a ring-shaped main body, an inner edge of the ring-shaped main body is provided with an abutting surface, at least part of the abutting surface is suitable for being attached to a human head; an electrode assembly is arranged on one side of the abutting surface along a first direction, the first direction is the radial direction of the ring-shaped main body, one end of the electrode assembly is swingably connected with the ring-shaped main body, and the other end of the electrode assembly extends towards the inner side of the ring-shaped main body to acquire a brain wave signal; and a data transmission assembly is arranged on the ring-shaped main body, and the data transmission assembly is electrically connected with the electrode assembly to output the brain wave signal through the data transmission assembly. An elastic member is arranged between the electrode assembly and the ring-shaped main body, the elastic member extends along the radial direction of the ring-shaped main body, the elastic member can be bent along the axial direction of the ring-shaped main body, and the elastic member can be bent along the tangential direction of the ring-shaped main body. The elastic member is in a cylindrical structure, the ring-shaped main body is provided with a ring groove, one end of the elastic member along the axial direction is assembled into the ring groove, the electrode assembly comprises a shell and a contact part, the contact part is arranged on the end of the shell away from the ring-shaped main body, the other end of the elastic member along the axial direction penetrates through the shell and extends to the inside of the shell. The end of the elastic member extending to the inside of the shell is provided with an annular flange, and the annular flange is clamped on the inner wall of the shell.

2. The brain-machine interface signal acquisition terminal of claim 1, wherein: The contact part is detachably connected with the shell; and / or 3. The brain-machine interface signal acquisition terminal of claim 2, wherein: The contact part has a plurality of contact parts, and the plurality of contact parts are arranged on the shell along the tangential direction of the ring-shaped main body. The electrode assembly has a plurality of electrode assemblies, and the plurality of electrode assemblies are symmetrically arranged along a second direction, and the second direction is perpendicular to the first direction.

4. The brain-machine interface signal acquisition terminal of claim 3, wherein: The ring-shaped main body comprises a fixing assembly and an adjusting assembly, the electrode assembly and the data transmission assembly are arranged on the fixing assembly, the adjusting assembly comprises a first end and a second end, one end of the fixing assembly is connected with the first end, and the other end of the fixing assembly is connected with the second end, so that the fixing assembly and the adjusting assembly jointly form the ring-shaped main body. The size of the adjusting assembly between the first end and the second end is adjustable, so as to adjust the inner diameter of the ring-shaped main body.

5. The brain-machine interface signal acquisition terminal of claim 1, wherein: The adjusting assembly comprises a support, a first gear rack, a second gear rack and a gear, the gear is rotatably arranged on the support, the first gear rack and the second gear rack are movably arranged on the support along the tangential direction of the ring-shaped main body, the end of the first gear rack away from the support forms the first end, the end of the second gear rack away from the support forms the second end, the first gear rack and the second gear rack are respectively arranged on the opposite sides of the gear along the tangential direction perpendicular to the ring-shaped main body, and the gear is simultaneously connected with the first gear rack and the second gear rack in meshing mode.

6. The brain-machine interface signal acquisition terminal of claim 1, wherein: The fixing assembly comprises a main body, a first loudspeaker and a second loudspeaker, the first loudspeaker is arranged on the end of the main body close to the first end, the second loudspeaker is arranged on the end of the main body close to the second end, and the first loudspeaker and the second loudspeaker are oppositely arranged along the second direction. ​ 7. The brain-machine interface signal acquisition terminal of claim 6, wherein: ​ 8. The brain-machine interface signal acquisition terminal of claim 6, wherein: ​ And / or, the fixing assembly comprises a body, a first ear clip and a second ear clip, the first ear clip is arranged at an end of the body close to the first end, the first ear clip is provided with a first contact point, the first contact point is electrically connected with the data transmission assembly, the second ear clip is arranged at an end of the body close to the second end, the second ear clip is provided with a second contact point, the second contact point is electrically connected with the data transmission assembly.

9. The brain-machine interface signal acquisition terminal of any one of claims 1-8, wherein: The annular body is provided with an inner lining which is detachably arranged at the abutting surface.

10. The brain-machine interface signal acquisition terminal of any one of claims 1-8, wherein: The brain-computer interface signal acquisition terminal further comprises a data storage assembly which is detachably arranged at the annular body and which is electrically connected with the data transmission assembly to store the electroencephalogram signals.

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