CN118266946A - Size-adjustable electroencephalogram helmet - Google Patents

Abstract

The invention discloses an electroencephalogram helmet with adjustable size, which comprises at least one telescopic module; the telescopic module comprises a first component, at least one second component, a gear, an elastic mechanism and at least one stretching piece; the gear is arranged based on the first component through an elastic mechanism, and the elastic mechanism provides pretightening force in a set direction for the gear; the rotation of the gear can drive the elastic mechanism to form corresponding elastic deformation; the second part of the stretching piece is connected with a second component; a rack is arranged at the first part of the stretching piece, and is positioned at the set side of the gear and can be meshed with the gear; in a state that the second component applies a set acting force to the stretching piece, the rack of the stretching piece can drive the gear to rotate, so that the elastic mechanism is driven to deform; in a state where the external force is set to disappear, the stretching piece is reset under the action of the reset force of the elastic mechanism. The size-adjustable electroencephalogram helmet provided by the invention can be used for adaptively adjusting the size of the electroencephalogram helmet according to the head type of a user.

Description

Size-adjustable electroencephalogram helmet

Technical Field

The invention belongs to the technical field of electroencephalogram equipment, relates to an electroencephalogram helmet, and particularly relates to an electroencephalogram helmet with an adjustable size.

Background

An electroencephalogram helmet is a device for detecting nerve signals, and is generally provided with a plurality of sensing electrodes. After the user wears the electroencephalogram helmet, the sensing electrode is closely attached to the scalp to sense nerve signals, and the sensed signals can be transmitted to the setting terminal equipment.

The conventional electroencephalogram helmet generally cannot be adjusted in size and cannot be worn by users with different head types. The size of the partial electroencephalogram helmet can be adjusted, but the size is not provided with a shell, each electrode sensor is connected through flexible materials, cables are exposed outside, the cables need to be arranged frequently, and the size is not attractive.

In addition, an electroencephalogram helmet is generally provided with an electroencephalogram signal sensor (also referred to as an electrode head), which is a sensor for acquiring brain epidermis signals; the existing electroencephalogram signal sensor generally adopts a scheme that the whole sensor is made of conductive rubber. Drawbacks of the existing solutions include: (1) Because the conductive rubber is hard, the wearer is uncomfortable to wear; (2) Because the conductive rubber is fixedly arranged, the scalp contact effect is poor, and the scalp is not contacted frequently, so that the acquisition of the brain electrical signals is influenced.

In view of this, there is an urgent need to design a new electroencephalogram helmet so as to overcome at least some of the above-mentioned drawbacks of the existing electroencephalogram helmets.

Disclosure of Invention

The invention provides an electroencephalogram helmet with adjustable size, which can adaptively adjust the size of the electroencephalogram helmet according to the head of a user.

In order to solve the technical problems, according to one aspect of the present invention, the following technical scheme is adopted:

An adjustable size electroencephalogram helmet, the adjustable size electroencephalogram helmet comprising at least one telescoping module; the telescopic module comprises a first component, at least one second component, a gear, an elastic mechanism and at least one stretching piece;

The gear is arranged based on the first component through an elastic mechanism, and the elastic mechanism provides pretightening force in a set direction for the gear; the rotation of the gear can drive the elastic mechanism to form corresponding elastic deformation;

The second part of the stretching piece is connected with the second component; a rack is arranged at the first part of the stretching piece, and is positioned at the set side of the gear and can be meshed with the gear;

in a state that the second component applies a set acting force to the stretching piece, the rack of the stretching piece can drive the gear to rotate, so that the elastic mechanism is driven to deform; in a state where the external force is set to be lost, the stretching piece is reset under the action of the reset force of the elastic mechanism.

As one embodiment of the present invention, the elastic mechanism is a coil spring; one end of the coil spring is fixed to the first member, and the other end is fixed to the rotation shaft of the gear.

As one embodiment of the present invention, the expansion module includes a first expansion module, where the first expansion module includes two stretching members and two second parts, the two stretching members are respectively denoted as a first stretching member and a second stretching member, and the two second parts are respectively denoted as a second part a and a second part B;

The second part of the first stretching piece is arranged on the second component A; the first stretching piece is provided with a first hollow area, and one side of the first hollow area is provided with a first rack;

the second part of the second stretching piece is arranged on the second component B; the second stretching piece is provided with a second hollow area, and one side of the second hollow area is provided with a second rack;

the first rack and the second rack are respectively positioned at two sides of the gear; the first stretching piece and the second stretching piece can stretch in opposite directions, so that the distance between the first component and the two second components can be adjusted.

As an embodiment of the present invention, the first rack is disposed above the second rack.

As one embodiment of the present invention, the expansion module includes a second expansion module; the second telescopic module is provided with only one stretching piece and only one second component; the first component is connected with the second component through a stretching piece and a gear provided with an elastic mechanism.

As one embodiment of the present invention, the expansion module is provided with at least three stretching members and at least three second parts, and the second part of each stretching member is fixed on the corresponding second part; the first parts are connected with the second parts through gears corresponding to the stretching parts and provided with elastic mechanisms.

In one embodiment of the present invention, in each expansion module, the second part of one expansion module is used as the first part of the other expansion module; the telescopic modules are mutually spliced to form the appearance of the electroencephalogram helmet.

As one embodiment of the present invention, the stretching member is a strip-shaped stretching sheet; the stretching piece is provided with a strip-shaped hollow area, and one side of the strip-shaped hollow area is provided with a rack; the gear passes through the hollow area, and the gear is meshed with the rack.

As one embodiment of the invention, the size-adjustable electroencephalogram helmet is provided with an electrode tip mounting seat, and the electrode tip mounting seat is provided with a corresponding electrode tip;

The electrode tip mounting seat comprises a mounting seat body, a second elastic mechanism and an electrode tip connecting part, wherein a first end of the second elastic mechanism is fixed on the corresponding mounting seat body, and a second end of the second elastic mechanism is fixedly arranged on the electrode tip connecting part; the electrode head connecting part is provided with the electrode head;

The electrode tip mounting seat further comprises a lining mechanism, wherein the lining mechanism is hollow and cylindrical, and the lining mechanism is arranged in the mounting seat body;

The lining mechanism is provided with internal threads, and the electrode head connecting part is provided with external threads; the external threads of the electrode tip connecting portion can be matched with the internal threads of the lining mechanism, so that the depth of the electrode tip connecting portion entering the lining mechanism can be adjusted.

As one embodiment of the invention, the electroencephalogram helmet is provided with an electroencephalogram signal sensor, namely an electrode head; the electroencephalogram signal sensor comprises a shell, a circuit board and a plurality of electrode units;

The circuit board is arranged on the shell, and the first ends of the electrode units are arranged on the shell; the first end of each electrode unit is connected with the circuit board;

the electrode unit comprises an electrode head, an electrode shell and an elastic mechanism, and the elastic mechanism is arranged in the electrode shell; one end of the elastic mechanism is arranged at the bottom of the electrode shell, and the other end of the elastic mechanism is fixed to the electrode head;

the electrode head is made of conductive materials, the electrode shell or the elastic mechanism is made of conductive materials, and the electrode head is connected with the circuit board through the electrode shell or the elastic mechanism and sends collected signals to the circuit board;

an opening is formed in the end portion of the electrode shell, and a part of the electrode head is arranged outside the electrode shell through the opening; the end part of the electrode head is provided with a limiting mechanism, so that a part of the electrode head is positioned in the electrode shell;

The electroencephalogram signal sensor further comprises a connecting piece, and the connecting piece is connected with the lower part of the shell; the connecting piece is made of conductive materials and is connected with the circuit board;

The connecting piece is provided with a conductive connecting end and a second elastic mechanism, the conductive connecting end is provided with a hollow area, and the second elastic mechanism is arranged in the hollow area;

The first end of the second elastic mechanism is arranged based on the shell, and the second end of the second elastic mechanism is fixedly arranged in the hollow area of the conductive connecting end head.

The invention has the beneficial effects that: the size-adjustable electroencephalogram helmet provided by the invention can be used for adaptively adjusting the size of the electroencephalogram helmet according to the head type of a user. Meanwhile, the electroencephalogram helmet is provided with a relatively stable shell, so that a circuit board, a sensing motor and cables inside the electroencephalogram helmet are better protected, and the electroencephalogram helmet is relatively attractive.

Drawings

Fig. 1 is a schematic structural view of an electroencephalogram helmet with adjustable size according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a first expansion module according to an embodiment of the invention.

Fig. 3 is a schematic structural diagram of a first expansion module according to an embodiment of the invention.

Fig. 4 is a schematic structural diagram of a second expansion module according to an embodiment of the invention.

Fig. 5 is a schematic structural diagram of a second expansion module according to an embodiment of the invention.

Fig. 6 is a schematic view showing a structure in which an electrode is mounted on an electroencephalogram helmet part according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of an electrode tip mounting base according to an embodiment of the invention.

Fig. 8 is a schematic structural view of an electrode tip mounting base according to an embodiment of the invention.

Fig. 9 is a schematic structural view of an electrode tip mounting base according to an embodiment of the invention.

Fig. 10 is a schematic structural view of an electrode tip mounting base according to an embodiment of the invention.

Fig. 11 is a cross-sectional view of an electroencephalogram sensor according to an embodiment of the present invention.

Fig. 12 is a perspective view of an electroencephalogram sensor according to an embodiment of the present invention.

Fig. 13 is a top view of an electroencephalogram sensor according to an embodiment of the present invention.

Detailed Description

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

For a further understanding of the present invention, preferred embodiments of the invention are described below in conjunction with the examples, but it should be understood that these descriptions are merely intended to illustrate further features and advantages of the invention, and are not limiting of the claims of the invention.

The description of this section is intended to be illustrative of only a few exemplary embodiments and the invention is not to be limited in scope by the description of the embodiments. It is also within the scope of the description and claims of the invention to interchange some of the technical features of the embodiments with other technical features of the same or similar prior art.

"Connected" in the specification includes both direct and indirect connections.

The invention discloses an electroencephalogram helmet with adjustable size, and fig. 1 is a schematic structural diagram of the electroencephalogram helmet with adjustable size in an embodiment of the invention; referring to fig. 1, the telescopic module includes a first member 1, at least one second member 2, a gear 3, an elastic mechanism 4 and at least one stretching member 5. The first component 1 and the second component 2 can be component frames forming the whole electroencephalogram helmet shell, and holes, slots and the like can be arranged according to requirements.

The gear 3 is arranged on the basis of the first component 1 through an elastic mechanism 4, and the elastic mechanism 4 provides pretightening force in a set direction for the gear 3; the rotation of the gear 3 can drive the elastic mechanism 4 to form corresponding elastic deformation; a second portion of the tension element 5 is connected to the second component 2. A rack 6 is provided at a first portion of the stretching member 5, and the rack 6 is located at a set side of the gear 3 and can be meshed with the gear 3. In an embodiment, the stretching member 5 may be a strip-shaped stretching sheet; the stretching piece 5 is provided with a strip-shaped hollow area, and one side of the strip-shaped hollow area is provided with a rack 6; the gear passes through the hollow area, and the gear is meshed with the rack.

In a state that the second component 2 applies a set acting force to the stretching piece 5, the rack 6 of the stretching piece 5 can drive the gear 3 to rotate, so that the elastic mechanism 4 is driven to deform; in a state where the external force is set to be lost, the tension member 5 is reset by the reset force of the elastic mechanism 4.

In one embodiment of the present invention, the elastic mechanism 4 is a coil spring; one end of the coil spring is fixed to the first member 1, and the other end is fixed to the rotation shaft of the gear 3.

In an embodiment of the present invention, the expansion module includes a first expansion module; fig. 2 and 3 are schematic structural views of a first expansion module according to an embodiment of the present invention, referring to fig. 2 and 3, the first expansion module includes two stretching members 5 and two second members 2, the two stretching members 5 are respectively denoted as a first stretching member and a second stretching member, and the two second members 2 are respectively denoted as a second member 2A and a second member 2B.

A second portion of the first tensile member is provided to the second member 2A; the first stretching piece is provided with a first hollow area, and one side of the first hollow area is provided with a first rack. A second portion of the second tensile member is provided to the second member 2B; the second stretching piece is provided with a second hollow area, and one side of the second hollow area is provided with a second rack.

The first rack and the second rack are respectively positioned at two sides of the gear 3; the first stretching piece and the second stretching piece can stretch in opposite directions, so that the distance between the first component and the two second components can be adjusted. In one embodiment, the first rack is disposed above the second rack.

In another embodiment of the present invention, the expansion module includes a second expansion module; fig. 4 and fig. 5 are schematic structural views of a second telescopic module according to an embodiment of the present invention, referring to fig. 4 and fig. 5, the second telescopic module is provided with only one stretching member 5 and only one second component 2; the first part 1 is connected to the second part 2 via a tension element 5 and a gear wheel 3 provided with an elastic means 4.

Of course, the telescopic module may further be provided with at least three stretching members 5 and at least three second parts 2, and the second part of each stretching member 5 is fixed to the corresponding second part 2; the first members 1 are connected to the respective second members 2 via corresponding tension members 5 and gears 3 provided with elastic means 4.

In addition, in each expansion module, the second part 2 of one expansion module may be used as the first part 1 of another expansion module; as shown in fig. 2 and 3, gears are provided to the second members 2A and 2B of the expansion and contraction modules, respectively, and the second members 2A and 2B serve as the first members of the other expansion and contraction modules, respectively. Therefore, the whole electroencephalogram helmet can be more compact, and the contraction effect is better. The telescopic modules are mutually spliced to form the appearance of the electroencephalogram helmet.

FIG. 6 is a schematic view showing an electrode mounted on an electroencephalogram helmet member according to an embodiment of the present invention; referring to fig. 6, in another embodiment of the present invention, the size-adjustable electroencephalogram helmet includes a plurality of electrode tip mounting bases 20 and a plurality of electrode tips 30, and each electrode tip mounting base 20 is disposed on the helmet body. The electrode tip mounting base 20 may be provided to the first member 1 or/and the second member 2, but may be provided to other members. In one use scenario of the present invention, the electroencephalogram signal sensor 30 may be installed in the first component 1, the second component 2; when a user wears the electroencephalogram helmet, the scalp of the user and the shell of the electroencephalogram helmet apply extrusion force to each electrode unit of the electroencephalogram signal sensor; the electrode unit of the electroencephalogram signal sensor adopts an elastic structure, so that the spring is contracted to a proper state, and can be better contacted with the scalp of a user, and the electroencephalogram signal sensor can be used for collecting electroencephalogram signals; in addition, the wearing comfort of the user is high.

Fig. 7 to 10 are schematic structural views of an electrode tip mounting base according to an embodiment of the invention; referring to fig. 7 to 10, in an embodiment of the invention, the electrode tip mounting base 20 includes a mounting base body 21, a second elastic mechanism 22 and an electrode tip connecting portion 23, wherein a first end of the second elastic mechanism 22 is fixed to the corresponding mounting base body 21, and a second end of the second elastic mechanism 22 is fixedly arranged on the electrode tip connecting portion 23; the electrode tab connecting part 23 is provided with the electrode tab 30.

In an embodiment of the present invention, the electrode tip mounting base 20 further includes a lining mechanism 24, the lining mechanism 24 has a hollow cylindrical shape, and the lining mechanism 24 is disposed in the mounting base body 21. The lining mechanism 24 is provided with internal threads, and the electrode tip connecting part 23 is provided with external threads; the external thread of the electrode tip connecting part 23 can be matched with the internal thread of the lining mechanism 24, so that the depth of the electrode tip connecting part 23 entering the lining mechanism 24 can be adjusted, the height of the electrode tip connecting part 23 higher than the lining mechanism 24 is adjusted, and the installation height of the electrode tip 30 is adjusted.

Fig. 11 to 13 are schematic structural views of an electroencephalogram sensor (electrode tip) according to an embodiment of the present invention; referring to fig. 11 to 13, the electroencephalogram sensor 30 includes a housing 301, a circuit board 302, and a plurality of electrode units 303; the circuit board 302 is disposed on the housing 301, and the first ends of the electrode units 303 are disposed on the housing 301; a first end of each electrode unit 303 is connected to the circuit board 302, and can send the collected signals to the circuit board 302. In one embodiment, each electrode unit 303 is disposed at one side of the case 301; the circuit board 302 is disposed within the housing 301.

In an embodiment, the housing 301 may include an upper housing 311 and a lower housing 312, where the upper housing 311 and the lower housing 312 are fastened together, and a hollow area is formed inside the fastened together for placing the circuit board 302 and the end portions of the electrode units 303. The housing 301 may be provided with a clamping groove 313 for facilitating connection with a set electrode tab.

The electrode unit 303 includes an electrode head 331, an electrode housing 332, and an elastic mechanism 333, and the elastic mechanism 333 may be a spring. The elastic mechanism 333 is disposed in the electrode housing 332; one end of the elastic mechanism 333 is disposed at the bottom of the electrode housing 332, and the other end is fixed to the electrode head 331. The electrode head 331 is made of conductive material, the electrode housing 332 or the elastic mechanism 333 is made of conductive material, the electrode head 331 is connected to the circuit board 302 through the electrode housing 332 or the elastic mechanism 333, and the collected signals are sent to the circuit board 302; the circuit board 302 is provided with an interface to the electrode housing 332 or the elastic mechanism 333. An opening is provided at an end of the electrode housing 332, and a portion of the electrode tip 331 is disposed outside the electrode housing 332 through the opening; the end of the electrode head 331 is provided with a limiting mechanism, so that a part of the electrode head 331 is continuously located inside the electrode housing 332. The structure of each electrode unit 303 may be the same, so that each electrode unit 303 is stressed uniformly.

In an embodiment of the present invention, the electroencephalogram signal sensor further includes a connection member 304, and the connection member 304 is connected to the lower portion of the housing 301; the connecting piece 304 is made of conductive material, and the connecting piece 304 is connected with the circuit board 302.

The connector 304 is provided with a conductive connecting end 341 and a second elastic mechanism 342, the conductive connecting end 341 is provided with a hollow area, and the second elastic mechanism 342 is arranged in the hollow area; the first end of the second elastic mechanism 342 is disposed based on the housing 301, and the second end of the second elastic mechanism 342 is fixedly disposed in the hollow region of the conductive connecting terminal 341. The second elastic mechanism 342 may be a spring-needle structure, which includes a spring and a connection terminal, where the connection terminal is located at the bottom of the hollow region of the conductive connection terminal 341. The conductive connection terminal 341 may be provided with a contact, and may be connected to a set electrode tab.

In summary, the size-adjustable electroencephalogram helmet provided by the invention can be used for adaptively adjusting the size of the electroencephalogram helmet according to the head of a user. Meanwhile, the electroencephalogram helmet is provided with a relatively stable shell, so that a circuit board, a sensing motor and cables inside the electroencephalogram helmet are better protected, and the electroencephalogram helmet is relatively attractive.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The description and applications of the present invention herein are illustrative and are not intended to limit the scope of the invention to the embodiments described above. Effects or advantages referred to in the embodiments may not be embodied in the embodiments due to interference of various factors, and description of the effects or advantages is not intended to limit the embodiments. Variations and modifications of the embodiments disclosed herein are possible, and alternatives and equivalents of the various components of the embodiments are known to those of ordinary skill in the art. It will be clear to those skilled in the art that the present invention may be embodied in other forms, structures, arrangements, proportions, and with other assemblies, materials, and components, without departing from the spirit or essential characteristics thereof. Other variations and modifications of the embodiments disclosed herein may be made without departing from the scope and spirit of the invention.

Claims (10)

1. The size-adjustable electroencephalogram helmet is characterized by comprising at least one telescopic module; the telescopic module comprises a first component, at least one second component, a gear, an elastic mechanism and at least one stretching piece;

The gear is arranged based on the first component through an elastic mechanism, and the elastic mechanism provides pretightening force in a set direction for the gear; the rotation of the gear can drive the elastic mechanism to form corresponding elastic deformation;

The second part of the stretching piece is connected with the second component; a rack is arranged at the first part of the stretching piece, and is positioned at the set side of the gear and can be meshed with the gear;

in a state that the second component applies a set acting force to the stretching piece, the rack of the stretching piece can drive the gear to rotate, so that the elastic mechanism is driven to deform; in a state where the external force is set to be lost, the stretching piece is reset under the action of the reset force of the elastic mechanism.

2. The size-adjustable electroencephalogram helmet according to claim 1, wherein:

the elastic mechanism is a coil spring; one end of the coil spring is fixed to the first member, and the other end is fixed to the rotation shaft of the gear.

3. The size-adjustable electroencephalogram helmet according to claim 1, wherein:

the telescopic module comprises a first telescopic module, the first telescopic module comprises two stretching pieces and two second parts, the two stretching pieces are respectively marked as a first stretching piece and a second stretching piece, and the two second parts are respectively marked as a second part A and a second part B;

The second part of the first stretching piece is arranged on the second component A; the first stretching piece is provided with a first hollow area, and one side of the first hollow area is provided with a first rack;

the second part of the second stretching piece is arranged on the second component B; the second stretching piece is provided with a second hollow area, and one side of the second hollow area is provided with a second rack;

the first rack and the second rack are respectively positioned at two sides of the gear; the first stretching piece and the second stretching piece can stretch in opposite directions, so that the distance between the first component and the two second components can be adjusted.

4. A size adjustable electroencephalogram helmet according to claim 3, wherein:

the first rack is arranged above the second rack.

5. The size-adjustable electroencephalogram helmet according to claim 1, wherein:

The telescopic module comprises a second telescopic module; the second telescopic module is provided with only one stretching piece and only one second component; the first component is connected with the second component through a stretching piece and a gear provided with an elastic mechanism.

6. The size-adjustable electroencephalogram helmet according to claim 1, wherein:

The telescopic module is provided with at least three stretching pieces and at least three second parts, and the second parts of the stretching pieces are fixed on the corresponding second parts; the first parts are connected with the second parts through gears corresponding to the stretching parts and provided with elastic mechanisms.

7. The size-adjustable electroencephalogram helmet according to claim 1, wherein:

In each telescopic module, the second part of one telescopic module is used as the first part of the other telescopic module; the telescopic modules are mutually spliced to form the appearance of the electroencephalogram helmet.

8. The size-adjustable electroencephalogram helmet according to claim 1, wherein:

The stretching piece is a strip-shaped stretching piece; the stretching piece is provided with a strip-shaped hollow area, and one side of the strip-shaped hollow area is provided with a rack; the gear passes through the hollow area, and the gear is meshed with the rack.

9. The size-adjustable electroencephalogram helmet according to claim 1, wherein:

the size-adjustable electroencephalogram helmet is provided with an electrode head mounting seat, and the electrode head mounting seat is provided with a corresponding electrode head;

The electrode tip mounting seat comprises a mounting seat body, a second elastic mechanism and an electrode tip connecting part, wherein a first end of the second elastic mechanism is fixed on the corresponding mounting seat body, and a second end of the second elastic mechanism is fixedly arranged on the electrode tip connecting part; the electrode head connecting part is provided with the electrode head;

The electrode tip mounting seat further comprises a lining mechanism, wherein the lining mechanism is hollow and cylindrical, and the lining mechanism is arranged in the mounting seat body;

The lining mechanism is provided with internal threads, and the electrode head connecting part is provided with external threads; the external threads of the electrode tip connecting portion can be matched with the internal threads of the lining mechanism, so that the depth of the electrode tip connecting portion entering the lining mechanism can be adjusted.

10. The size-adjustable electroencephalogram helmet according to claim 1, wherein:

The electroencephalogram helmet is provided with an electroencephalogram signal sensor, namely an electrode head; the electroencephalogram signal sensor comprises a shell, a circuit board and a plurality of electrode units;

The circuit board is arranged on the shell, and the first ends of the electrode units are arranged on the shell; the first end of each electrode unit is connected with the circuit board;

The electrode unit comprises an electrode head, an electrode shell and an elastic mechanism, and the elastic mechanism is arranged in the electrode shell; one end of the elastic mechanism is arranged at the bottom of the electrode shell, and the other end of the elastic mechanism is fixed to the electrode head; the electrode head is made of conductive materials, the electrode shell or the elastic mechanism is made of conductive materials, and the electrode head is connected with the circuit board through the electrode shell or the elastic mechanism and sends collected signals to the circuit board;

an opening is formed in the end portion of the electrode shell, and a part of the electrode head is arranged outside the electrode shell through the opening; the end part of the electrode head is provided with a limiting mechanism, so that a part of the electrode head is positioned in the electrode shell;

The electroencephalogram signal sensor further comprises a connecting piece, and the connecting piece is connected with the lower part of the shell; the connecting piece is made of conductive materials and is connected with the circuit board;

The connecting piece is provided with a conductive connecting end and a second elastic mechanism, the conductive connecting end is provided with a hollow area, and the second elastic mechanism is arranged in the hollow area;

The first end of the second elastic mechanism is arranged based on the shell, and the second end of the second elastic mechanism is fixedly arranged in the hollow area of the conductive connecting end head.