Electroencephalogram acquisition device and electroencephalogram acquisition equipment

Abstract

The embodiment of the invention provides an electroencephalogram collecting device and electroencephalogram collecting equipment. The electroencephalogram collecting device comprises an electroencephalogram collecting sub-device, the electroencephalogram collecting sub-device comprises a collecting base, the collecting base comprises a hexagonal frame body with the center area protruding outwards and seven mounting parts arranged on the frame body, and the seven mounting parts comprise the first mounting part located in the center area and the six second mounting parts located around the first mounting part; the center distance between each second mounting part and the first mounting part and the center distance between every two adjacent second mounting parts have a preset value, and the distance from the center of each second mounting part to the two outer edges, adjacent to the second mounting part, of the frame body is smaller than or equal to half of the preset value; at least one of the seven installation parts is detachably provided with the electrode assembly, the electrode assembly comprises an electrode, and the collection end of the electrode is located on the virtual cambered surface on the inner side of the collection base. The electroencephalogram collecting device can be used for collecting signals of the whole brain or a specific brain area.

Description

Technical Field

[0001] The present invention relates to the technical field of electroencephalogram measurement, and in particular to an electroencephalogram acquisition device and an electroencephalogram acquisition equipment having the same. Background Art

[0002] Electroencephalogram (EEG) is a non-invasive technology used to measure brain electrical activity. It is widely used in neuroscience, neuroengineering, medical diagnosis, rehabilitation therapy, and brain-computer interface (BCI). The analysis of EEG signals can reveal the activity state of the brain and provide a basis for the diagnosis of neurological diseases such as epilepsy, insomnia, depression, and Parkinson's disease. It also plays an increasingly important role in the rehabilitation training of patients with impaired consciousness and motor control disorders.

[0003] The EEG acquisition device can collect brain signals through the electrodes thereon. Traditional EEG acquisition devices are usually designed as fixed electrode arrays. In this way, the electrodes are arranged in a fixed arrangement to cover the subject's head. However, different application scenarios and individual needs may require electrodes to collect signals from specific brain areas. For example, brain-computer interface (Brain Computer Interface, BCI) technology often focuses on collecting signals from the motor cortex or visual cortex, while epilepsy diagnosis may require collecting signals from a wider range of brain areas. This diversity of needs makes the EEG acquisition device with a fixed electrode array subject to certain limitations in flexibility and applicability, resulting in its poor applicability in different clinical or research scenarios. Summary of the invention

[0004] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present invention, a brain wave acquisition device is provided. The brain wave acquisition device includes a brain wave acquisition sub-device, and the brain wave acquisition sub-device includes: a collection seat, the collection seat includes a hexagonal frame with a central area protruding outward, and seven mounting parts arranged on the frame, the seven mounting parts include a first mounting part located in the central area, and six second mounting parts located around the first mounting part, each of the second mounting parts is arranged corresponding to the vertex of the frame, the center distance between each second mounting part and the first mounting part has a predetermined value, the center distance between any two adjacent second mounting parts has the predetermined value, and the distance from the center of each second mounting part to the two outer edges of the frame adjacent to the second mounting part is less than or equal to half of the predetermined value; and an electrode assembly, at least one of the seven mounting parts is detachably mounted with the electrode assembly, the electrode assembly includes an electrode, the electrode faces the inner side of the collection seat, and the collection end of the electrode is located on the virtual arc surface inside the collection seat.

[0005] Exemplarily, the seven mounting portions are respectively configured as mounting sleeves, the electrode assembly further comprises an electrode base, the electrode is connected to an inner end of the electrode base, and an outer end of the electrode base is inserted into and connected to the mounting sleeve.

[0006] Exemplarily, the electrode assembly also includes a base cover, which includes a connecting portion and a nut, wherein the connecting portion is connected between the outer end of the electrode base and the nut so that the nut surrounds the electrode base and is spaced apart from the electrode base, and the mounting sleeve has a protruding section protruding outward from the frame, and the external thread on the outer peripheral wall of the protruding section is threadedly connected to the internal thread on the inner peripheral wall of the nut.

[0007] Exemplarily, an annular groove is provided on the outer peripheral wall of the electrode base, and the connecting portion is detachably snapped into the annular groove.

[0008] Exemplarily, the electrode assembly further includes an electrode base and an elastic member, wherein the outer end of the electrode base is detachably mounted to any one of the seven mounting portions, and the elastic member is connected between the inner end of the electrode base and the outer end of the electrode.

[0009] Exemplarily, the electrode assembly also includes an electrode connecting seat and an electrode pressure cover, the elastic member is connected between the inner end of the electrode base and the outer end of the electrode connecting seat, the electrode pressure cover is threadedly connected to the inner end of the electrode connecting seat, and the electrode is detachably snapped to the electrode pressure cover.

[0010] Exemplarily, a connecting piece is provided in the electrode connection seat, the outer end of the connecting piece is connected to a wire passing through the electrode base, and the outer end of the electrode contacts the inner end of the connecting piece when the electrode cover is threadedly connected to the inner end of the electrode connection seat.

[0011] Exemplarily, a reinforcing rib is connected between two adjacent mounting portions among the seven mounting portions.

[0012] Exemplarily, the radius of the virtual curved surface is between 50 mm and 70 mm.

[0013] Exemplarily, the EEG acquisition device includes a splicing piece and a plurality of the EEG acquisition sub-devices, two adjacent EEG acquisition sub-devices have adjacent and oppositely disposed outer edges, and the splicing piece is connected to the two oppositely disposed outer edges.

[0014] Exemplarily, two splicing grooves are provided on the splicing piece, and the two oppositely arranged outer edges are snap-fitted to the splicing grooves in a one-to-one correspondence.

[0015] Exemplarily, the EEG acquisition device includes an EEG acquisition sub-device, which includes: an acquisition seat, the acquisition seat includes a frame, a plurality of mounting parts are evenly distributed on the frame, so that the center distances between adjacent mounting parts among the plurality of mounting parts all have a predetermined value, and the frame is constructed to be able to splice other EEG acquisition sub-devices along multiple splicing directions, wherein: along each of the plurality of splicing directions, the distance from the center of the mounting part located on the edge area of ​​the frame to the outer edge of the frame is less than or equal to half of the predetermined value, so that the center distance between the mounting part on the edge area of ​​the frame and the mounting part of other EEG acquisition sub-devices has the predetermined value; and an electrode assembly, the electrode assembly is detachably mounted on at least one of the plurality of mounting parts, the electrode assembly includes an electrode, the electrode faces the inner side of the acquisition seat, and the acquisition end of the electrode is located on a virtual arc surface inside the acquisition seat.

[0016] Exemplarily, the EEG acquisition sub-device has the same structure as the other EEG acquisition sub-devices.

[0017] According to another aspect of the present invention, there is also provided an EEG acquisition device, which comprises a head-mounted device and any one of the above EEG acquisition devices, wherein the acquisition seat is connected to the head-mounted device, and the acquisition end of the electrode contacts the head of the subject when the head-mounted device is worn on the subject's head.

[0018] The EEG acquisition device provided by the embodiment of the present invention, the EEG acquisition sub-device can have a modular design. In this way, the EEG acquisition device can select any number of EEG acquisition sub-devices according to needs, and splice the EEG acquisition sub-devices into any suitable shape to cover head areas of different areas and / or shapes, so that the signal of the target brain area can be collected. In this way, the EEG acquisition device can be used to collect signals from the entire brain or a specific brain area, so as to meet a variety of needs. In addition, since the mounting portion can be evenly distributed, the density of electrode acquisition can be relatively uniform, thereby improving the quality of the collected signal. And, since the electrode is detachable, the electrode can be installed according to needs to collect specific brain areas. In this way, by flexibly splicing the EEG acquisition sub-devices and flexibly installing the electrodes, the electrodes have a high degree of freedom, so that they can have different densities, and then the target brain area can be subjected to EEG acquisition of multiple densities, so as to achieve flexible and efficient acquisition of signals from any brain area, and avoid setting up redundant electrodes, resulting in waste of electrodes.

[0019] A series of simplified concepts are introduced in the summary of the invention, which will be further described in detail in the detailed description. The summary of the invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0020] The advantages and features of the present invention are described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following drawings of the present invention are used as part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0022] Figure 1 A top view of an electroencephalogram acquisition device according to an exemplary embodiment of the present invention;

[0023] Figure 2 for Figure 1 A front view of the EEG acquisition device shown in FIG.

[0024] Figure 3 for Figure 2 A front view of the EEG acquisition device shown in FIG.

[0025] Figure 4 for Figure 3 A cross-sectional view of the EEG acquisition device shown in FIG.

[0026] Figure 5 for Figure 3 A front view of the EEG acquisition sub-device shown in FIG.

[0027] Figure 6 for Figure 5 A cross-sectional view of the EEG acquisition sub-device shown in FIG.

[0028] Figure 7 for Figure 5 A front view of the collection seat shown in FIG.

[0029] Figure 8 for Figure 7 A cross-sectional view of the collection seat shown in FIG.

[0030] Fig. 9 for Figure 8 A partial enlarged view of the collection seat shown in FIG.

[0031] Fig.10 for Figure 5 A front view of the electrode assembly shown in FIG.

[0032] Fig.11 for Fig.10 A cross-sectional view of an electrode assembly is shown in FIG.

[0033] The above drawings include the following reference numerals:

[0034] 100, EEG acquisition device; 110, EEG acquisition sub-device; 120, virtual arc surface; 200, acquisition seat; 210, frame; 211, central area; 212, edge area; 213, outer edge; 220, mounting portion; 221, first mounting portion; 222, second mounting portion; 230, mounting sleeve; 231, protruding section; 240, reinforcing rib; 300, electrode assembly; 310, electrode; 311, collection end; 320, electrode base; 321, annular slot; 330, base pressure cover; 331, connecting part; 332, nut; 340, elastic member; 350, electrode connecting seat; 360, electrode pressure cover; 370, connecting piece; 380, wire; 400, splicing part; 410, splicing slot; 500, head-mounted device; 510, head-mounted base; 520, connecting belt; 530, tightener. DETAILED DESCRIPTION

[0035] In the following description, a large amount of details are provided so that the present invention can be thoroughly understood. However, it will be appreciated by those skilled in the art that the following description only exemplarily illustrates a preferred embodiment of the present invention, and the present invention can be implemented without one or more such details. In addition, in order to avoid confusion with the present invention, some technical features well known in the art are not described in detail.

[0036] According to one aspect of the present invention, a brain wave acquisition device is provided. The brain wave acquisition device can be applied to any suitable device, including but not limited to the brain wave acquisition device. Therefore, according to another aspect of the present invention, a brain wave acquisition device is also provided. The brain wave acquisition device and the brain wave acquisition device of the embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0037] like Figure 3-11 As shown, the EEG acquisition device 100 may include any number of EEG acquisition sub-devices 110 , such as one, two, three or more. The EEG acquisition sub-device 110 may include a acquisition seat 200 and an electrode assembly 300 .

[0038] The collection seat 200 may include a frame 210 and a plurality of mounting portions 220. The plurality of mounting portions 220 may be evenly distributed on the frame 210. In this way, the center distances between adjacent mounting portions 220 on the frame 210 may have a predetermined value. The number of mounting portions 220 may be two, three or more. In the embodiment shown in the figure, the number of mounting portions 220 may be seven. Each mounting portion 220 may be used to install an electrode assembly 300. The structure of the mounting portion 220 may be arbitrary, including but not limited to buckles, pins or clamps, as long as the electrode assembly 300 can be installed. The frame 210 may be configured to splice other EEG collection sub-devices 110 along multiple splicing directions. In this way, the EEG collection sub-device 110 may be spliced ​​with other EEG collection sub-devices 110 along multiple splicing directions. In this way, multiple EEG collection sub-devices 110 may be spliced ​​into any suitable shape, such as a long strip or a generally circular sheet. Wherein: along each of the multiple splicing directions, the distance from the center of the mounting portion 220 located on the edge area 212 of the frame 210 to the outer edge 213 of the frame 210 can be less than or equal to half of the predetermined value. Multiple EEG acquisition sub-devices 110 can be seamlessly spliced. In this way, the center distance between the mounting portion 220 on the edge area 212 of the frame 210 and the mounting portion 220 of other EEG acquisition sub-devices 110 can have a predetermined value. In this way, the mounting portions 220 can also be evenly distributed in the multiple EEG acquisition sub-devices 110 after splicing.

[0039] Exemplarily, the EEG acquisition device 100 may further include a splicing piece 400. Two adjacent EEG acquisition sub-devices 110 may have adjacent and oppositely arranged outer edges 213. The splicing direction may be a direction perpendicular to the outer edge 213. The splicing piece 400 may be connected to two oppositely arranged outer edges 213. By setting the splicing piece 400, the two adjacent EEG acquisition sub-devices 110 can be relatively fixed. The structure of the splicing piece 400 may have various types, such as buckles, pins or clamps. In some embodiments, two splicing grooves 410 may be provided on the splicing piece 400. The two oppositely arranged outer edges 213 may be snapped into the splicing grooves 410 in a one-to-one correspondence. With such a configuration, the structure of the splicing piece 400 is relatively simple, and the two adjacent EEG acquisition sub-devices 110 can be easily spliced ​​and separated.

[0040] Exemplarily, the frame 210 may be in the shape of a hexagon. The hexagon includes, but is not limited to, a regular hexagon, a rounded hexagon, or a hexagon of other shapes. Thus, the frame 210 may have six outer edges 213. Each EEG acquisition sub-device 110 may be generally honeycomb-shaped. The EEG acquisition sub-device 110 may be spliced ​​with other EEG acquisition sub-devices 110 along six splicing directions. Compared with frames 210 of other shapes, the EEG acquisition sub-devices 110 may be spliced ​​into any suitable shape, such as a long strip or a generally circular sheet. The frame 210 may also have a central area 211 located at the center of the edge area 212. The central area 211 may protrude outward. Thus, the frame 210 may be in the shape of an arc, or a shape composed of multiple planes similar to a diamond. In this way, the shape of the frame 210 may generally fit the head of the subject. The orientation term "outside" used here and below refers to the side away from the subject's head when the EEG acquisition device 100 is worn on the subject's head. Therefore, the orientation term "inside" used below refers to the side close to the subject's head when the EEG acquisition device 100 is worn on the subject's head. The term "head" used in this application refers to the organs above the human neck (cervical spine), including the brain and extracerebral tissues such as the skull, skin and hair. The term "brain" used in this application refers to the organs left after removing extracerebral tissues, etc., and is mainly intended to refer to the brain, but is not limited to this, and may also include the brain, cerebellum, brainstem, etc.

[0041] In an embodiment where seven mounting portions 220 are provided on the frame 210, the seven mounting portions 220 may include a first mounting portion 221 and six second mounting portions 222. The first mounting portion 221 may be located in the central area 211. The six second mounting portions 222 may be located in the edge area 212 and around the first mounting portion 221. Each second mounting portion 222 may be provided corresponding to a vertex of the frame 210. In other words, the hexagonal frame 210 may have six vertices. Each vertex may correspond to a second mounting portion 222. The center distance between each second mounting portion 222 and the first mounting portion 221 may have a predetermined value. The center distance between any two adjacent second mounting portions 222 may have a predetermined value. In this way, the seven mounting portions 220 may be evenly distributed on the frame 210. The distance from the center of each second mounting portion 222 to the two outer edges 213 of the frame 210 adjacent to the second mounting portion 222 may be less than or equal to half of the predetermined value. It should be noted that the distance from the center of the second mounting portion 222 to the two outer edges 213 of the frame 210 adjacent to the second mounting portion 222 refers to the distance from the center of the second mounting portion 222 to the foot of the two adjacent outer edges 213. In this way, the splicing direction can be a direction perpendicular to the six outer edges 213. In this way, the EEG acquisition sub-device 110 can be spliced ​​with other EEG acquisition sub-devices 110 along the six splicing directions. The EEG acquisition sub-device 110 can achieve seamless splicing to form a spherical shell-like structure, so that it can adapt to the shape of the subject's head.

[0042] At least one of the seven mounting parts 220 is detachably mounted with an electrode assembly 300. That is, the electrode assembly 300 is detachably mounted to at least one of the seven mounting parts 220, for example, it can be mounted to each mounting part 220. The electrode assembly 300 may include an electrode 310. The electrode 310 may adopt various types of electrodes known in the art or that may appear in the future, including but not limited to conductive paste electrodes, saline electrodes, gel electrodes, dry electrodes or ECG button electrodes. The electrodes 310 on different electrode assemblies 300 may be the same or different. The electrode 310 may face the inner side of the collection seat 200. The inner end of the electrode 310 may be configured as a collection end 311. The collection end 311 may be used to collect signals from the brain of the subject. The collection end 311 of the electrode 310 may be located on the virtual arc surface 120 on the inner side of the collection seat 200. When multiple EEG collection sub-devices 110 are spliced, the collection ends 311 of the electrodes 310 on the multiple EEG collection sub-devices 110 may all be located on the virtual arc surface 120. Since the central area 211 bulges outward, the virtual arc surface 120 can bulge outward, which can be more compatible with the shape of the subject's head. Exemplarily, the radius R of the virtual arc surface 120 can be between 50mm and 70mm, for example, 50mm, 55mm, 60mm, 65mm or 70mm. In this way, the shape of the virtual arc surface 120 is more compatible with the shape of the subject's head, so that the collection end 311 of the electrode 310 can be easily contacted with the subject's head to avoid bad conduction.

[0043] In actual application, the EEG acquisition device 100 can be worn on the head of the subject. The EEG acquisition sub-device 110 can be spliced ​​into any suitable shape to cover the corresponding head area, so that the acquisition end 311 of the electrode 310 can collect signals from the target brain area. For example, when it is necessary to collect signals from the frontal lobe, one or more EEG acquisition sub-devices 110 can cover the forehead of the head; when it is necessary to collect signals from the occipital lobe, one or more EEG acquisition sub-devices 110 can cover the back of the head.

[0044] In summary, the EEG acquisition device 100 provided in the embodiment of the present invention and the EEG acquisition sub-device 110 can have a modular design. In this way, the EEG acquisition device 100 can select any number of EEG acquisition sub-devices 110 according to needs, and splice the EEG acquisition sub-devices 110 into any suitable shape to cover head areas of different areas and / or shapes, so that the signal of the target brain area can be collected. In this way, the EEG acquisition device 100 can be used to collect signals from the entire brain or a specific brain area, so as to meet a variety of needs. In addition, since the mounting portion 220 can be evenly distributed, the density of the electrode 310 acquisition can be relatively uniform, thereby improving the quality of the collected signal. And, since the electrode 310 is detachable, the electrode 310 can be installed according to needs to collect specific brain areas. In this way, by flexibly splicing the EEG acquisition sub-device 110 and flexibly installing the electrode 310, the electrode 310 has a high degree of freedom, so that it can have different densities, and then multiple densities of EEG acquisition can be performed on the target brain area, thereby realizing flexible and efficient acquisition of signals from any brain area, avoiding the setting of redundant electrodes 310, which leads to waste of electrodes 310.

[0045] Furthermore, since each EEG acquisition sub-device 110 is hexagonal, its structure is relatively compact and its size along any direction is relatively uniform, so that the electrode 310 can be easily contacted with the head of the subject. Also, in practical applications, in most cases, signals are collected from brain regions such as the frontal lobe or the temporal lobe, and the head regions corresponding to these brain regions can generally be circular sheets, so the hexagonal EEG acquisition sub-device 110 itself or by splicing other EEG acquisition sub-devices 110 is more suitable for the circular sheet-shaped head region.

[0046] Exemplarily, the EEG acquisition sub-device 110 and other EEG acquisition sub-devices 110 may have the same structure. It should be noted that the "same structure" means that the EEG acquisition sub-device 110 and other EEG acquisition sub-devices 110 have the same function and substantially the same structure, rather than being completely the same. The same or different numbers of electrodes 310 may be installed on different EEG acquisition sub-devices 110. For example, seven electrodes 310 may be installed on an EEG acquisition sub-device 110, while six electrodes 310 may be installed on other EEG acquisition sub-devices 110. In addition, the same or different types of electrodes 310 may be installed on different EEG acquisition sub-devices 110.

[0047] In an embodiment where the EEG acquisition device 100 is applied to an EEG acquisition device, Figure 1-2As shown, the EEG acquisition device may further include a head-mounted device 500. The acquisition base 200 may be connected to the head-mounted device 500. The EEG acquisition device 100 may be worn on the head of the subject through the head-mounted device 500. The head-mounted device 500 includes but is not limited to a cap-shaped device or a belt-shaped device. When the head-mounted device 500 is worn on the head of the subject, the acquisition end 311 of the electrode 310 may contact the head of the subject.

[0048] Exemplarily, the head-mounted device 500 may include a head-mounted base 510, a connecting belt 520, and a tightener 530. When the head-mounted device 500 is worn on the head of the subject, the head-mounted base 510 may be located on the top of the subject's head. The collection seat 200 may be connected to the head-mounted base 510. The connecting belt 520 may include two. The two connecting belts 520 may be connected downwardly to the tightener 530 from the left and right sides of the head-mounted base 510. The head-mounted base 510, the connecting belt 520, and the tightener 530 may form a closed loop to surround the subject's head. When the head-mounted device 500 is worn on the head of the subject, the tightener 530 may be located below the subject's head. The tightener 530 may move along the connecting belt 520. By moving the tightener 530 to a suitable position, the size of the closed loop may be controlled, so that it may be adapted to different heads of the subject. In addition, the head-mounted device 500 may be easy to wear.

[0049] Exemplarily, the seven mounting portions 220 can be configured as mounting sleeves 230, respectively. The electrode assembly 300 can also include an electrode base 320. The electrode 310 can be connected to the inner end of the electrode base 320 by any suitable means such as plug-in, threaded connection or connector connection. The electrode 310 can be directly or indirectly connected to the inner end of the electrode base 320 through other components. The outer end of the electrode base 320 can be inserted into and connected to the mounting sleeve 230. The outer end of the electrode base 320 can be connected to the mounting sleeve 230 in any manner, including but not limited to plug-in, threaded connection or connector connection. The electrode base 320 can be directly or indirectly connected to the mounting sleeve 230 through other components. In this way, the mounting sleeve 230 can position the electrode base 320, so that the installation accuracy of the electrode 310 can be higher. In addition, the structure of the mounting portion 220 is relatively simple and easy to process and manufacture.

[0050] Exemplarily, the electrode assembly 300 may further include a base gland 330. The base gland 330 may include a connection portion 331 and a nut 332. The connection portion 331 may be connected between the outer end of the electrode base 320 and the nut 332 so that the nut 332 surrounds the electrode base 320 and is spaced apart from the electrode base 320. The mounting sleeve 230 may have a protruding section 231 protruding outward from the frame 210. The external thread on the outer peripheral wall of the protruding section 231 may be threadedly connected to the internal thread on the inner peripheral wall of the nut 332. In this way, the protruding section 231 may extend between the nut 332 and the electrode base 320. In this way, the base gland 330 may be threadedly connected to the mounting sleeve 230, so that installation and removal can be facilitated. In addition, when the base gland 330 is connected to the mounting sleeve 230 in place, the protruding section 231 may abut against the connection portion 331. During the injection, the connection portion 331 can play a role of limiting, thereby ensuring that the base gland 330 is fully connected to the mounting sleeve 230. The external thread on the outer peripheral wall of the protruding section 231 can extend to the entire outer peripheral wall of the mounting sleeve 230. In this way, the mounting sleeve 230 can be threadedly connected to the frame 210 of the collection seat 200.

[0051] Exemplarily, an annular groove 321 may be provided on the outer peripheral wall of the electrode base 320. The connecting portion 331 may be detachably snapped into the annular groove 321. The connecting portion 331 may have a certain elasticity, so that it can be easily snapped into the annular groove 321. Exemplarily, the connecting portion 331 may also be annular. With such a configuration, the base gland 330 can be easily connected and disassembled. In this way, after the EEG acquisition device 100 has been used for a period of time, the nut 332 may be worn due to multiple threaded connections with the protruding section 231, so that the connecting portion 331 can be detached from the annular groove 321, so that a new base gland 330 can be replaced. In this way, there is no need to replace the electrode base 320, thereby reducing the cost of use.

[0052] Exemplarily, the electrode assembly 300 may further include an elastic member 340. The outer end of the electrode base 320 may be detachably mounted to any one of the seven mounting portions 220. The elastic member 340 may be connected between the inner end of the electrode base 320 and the outer end of the electrode 310. The elastic member 340 may be directly or indirectly connected to the outer end of the electrode 310 through other components. The elastic member 340 may include a spring or an elastic member made of an elastic material such as rubber, as long as it has elasticity. By providing the elastic member 340, when the EEG acquisition device 100 is worn on the subject's head, the acquisition end 311 of the electrode 310 may be squeezed against the subject's head by adjusting the tightener 530 or pushing the frame 210 or any other suitable method. At this time, the elastic member 340 may be compressed, so that an elastic force toward the subject's head may be applied to the electrode 310, thereby making the acquisition end 311 of the electrode 310 closely fit the subject's head, avoiding poor contact due to factors such as the elasticity of the subject's hair, and thus causing the problem of bad conduction. The collection end 311 of the electrode 310 can be in stable contact with the head of the subject, thereby improving the quality of the collected signal. In addition, according to the different sizes and / or shapes of the subject's head and the different hair qualities and quantities, the elastic member 340 can automatically adjust its deformation, that is, it can achieve different distances and different angles of direction adjustment under the action of squeezing, so that the collection end 311 of the electrode 310 can fit closely to the heads of different subjects, and the applicability of the EEG collection device 100 is relatively high.

[0053] Exemplarily, the electrode assembly 300 may further include an electrode connector 350 and an electrode gland 360. The elastic member 340 may be connected between the inner end of the electrode base 320 and the outer end of the electrode connector 350. The electrode gland 360 may be threadedly connected to the inner end of the electrode connector 350. The electrode 310 may be detachably snapped to the electrode gland 360. The electrode gland 360 may have a cavity inside. The electrode 310 may be inserted into the cavity. With such a configuration, the electrode gland 360 may be replaced with an adapted one according to the different electrodes 310. Moreover, different electrodes 310 may be replaced according to actual usage requirements. In this way, the EEG acquisition device 100 has a high applicability, so that it can cope with different acquisition scenarios.

[0054] Exemplarily, a connecting piece 370 may be provided in the electrode connection seat 350. The connecting piece 370 includes but is not limited to a silver / silver chloride sheet. A wire 380 may be connected to the outer end of the connecting piece 370. The wire 380 may pass through the electrode base 320, so that it may pass through the outer end of the electrode base 320. The wire 380 may be used to connect to an amplifier, so that it may be connected to a computer or other components through the amplifier. Therefore, the EEG acquisition device 100 may also include an amplifier. When the electrode gland 360 is threadedly connected to the inner end of the electrode connection seat 350, the outer end of the electrode 310 may contact the inner end of the connecting piece. In this way, the electrode 310 may be connected to the wire 380 through the connecting piece 370. The signal collected by the acquisition end 311 of the electrode 310 may be transmitted through the connecting piece 370 and the wire 380, so that it may be converted into an appropriate signal through the amplifier. With such a configuration, it is convenient to replace the electrode 310.

[0055] Exemplarily, a reinforcing rib 240 may be connected between two adjacent mounting portions 220 among the seven mounting portions 220. With such a configuration, the mechanical strength of the acquisition seat 200 is high, and the stability of the signal collected by the EEG acquisition device 100 is high. Among them, if the reinforcing rib 240 connected between adjacent second mounting portions 222 is extended and connected, it can be constructed as a virtual hexagon. The virtual hexagon may have the same center as the hexagon of the frame 210. In addition, the size ratio of the virtual hexagon to the hexagon of the frame 210 may be 1:1.5.

[0056] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by directional words such as "front", "back", "up", "down", "left", "right", "lateral", "vertical", "vertical", "horizontal", "top", "bottom", etc. is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention; the directional words "inside" and "outside" refer to the inside and outside relative to the contour of each component itself.

[0057] For ease of description, regional relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the regional positional relationship between one or more components or features shown in the figure and other components or features. It should be understood that regional relative terms include not only the orientation of the components as described in the figure, but also different orientations in use or operation. For example, if the components in the accompanying drawings are inverted as a whole, the components "above other components or features" or "above other components or features" will include the situation where the components are "below other components or structures" or "below other components or structures". Therefore, the exemplary term "above" may include both "above" and "below". In addition, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this article is intended to include all of these situations.

[0058] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, parts, components and / or combinations thereof.

[0059] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0060] The present invention has been described by the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the present invention to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the present invention is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the present invention, and these variations and modifications all fall within the scope of the protection claimed by the present invention. The protection scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An electroencephalogram acquisition device, characterized in that: The device comprises an electroencephalogram (EEG) acquisition sub-device, wherein the electroencephalogram (EEG) acquisition sub-device comprises: A collection seat, the collection seat comprising a hexagonal frame with a central area protruding outward, and seven mounting parts arranged on the frame, the seven mounting parts comprising a first mounting part located in the central area, and six second mounting parts located around the first mounting part, each of the second mounting parts being arranged corresponding to a vertex of the frame, a center distance between each of the second mounting parts and the first mounting part having a predetermined value, a center distance between any two adjacent second mounting parts having the predetermined value, and a distance from the center of each of the second mounting parts to two outer edges of the frame adjacent to the second mounting part being less than or equal to half of the predetermined value; and An electrode assembly, wherein at least one of the seven mounting parts is detachably mounted with the electrode assembly, the electrode assembly comprises an electrode, the electrode faces the inner side of the collection seat, and the collection end of the electrode is located on a virtual arc surface on the inner side of the collection seat.

2. The EEG acquisition device according to claim 1, characterized in that: The seven mounting parts are respectively configured as mounting sleeves. The electrode assembly further comprises an electrode base. The electrode is connected to an inner end of the electrode base. An outer end of the electrode base is inserted into and connected to the mounting sleeve.

3. The EEG acquisition device according to claim 2, characterized in that: The electrode assembly also includes a base pressure cover, which includes a connecting portion and a nut, wherein the connecting portion is connected between the outer end of the electrode base and the nut so that the nut surrounds the electrode base and is spaced apart from the electrode base, and the mounting sleeve has a protruding section protruding outward from the frame, and the external thread on the outer peripheral wall of the protruding section is threadedly connected to the internal thread on the inner peripheral wall of the nut.

4. The EEG acquisition device according to claim 3, characterized in that: An annular groove is provided on the outer peripheral wall of the electrode base, and the connecting portion is detachably connected to the annular groove.

5. The EEG acquisition device according to claim 1, characterized in that: The electrode assembly further includes an electrode base and an elastic member, wherein the outer end of the electrode base is detachably mounted to any one of the seven mounting portions, and the elastic member is connected between the inner end of the electrode base and the outer end of the electrode.

6. The EEG acquisition device according to claim 5, characterized in that: The electrode assembly also includes an electrode connecting seat and an electrode pressing cover, the elastic member is connected between the inner end of the electrode base and the outer end of the electrode connecting seat, the electrode pressing cover is threadedly connected to the inner end of the electrode connecting seat, and the electrode is detachably snapped onto the electrode pressing cover.

7. The electroencephalogram acquisition device according to claim 6, characterized in that: A connecting piece is arranged in the electrode connection seat, and the outer end of the connecting piece is connected to a wire passing through the electrode base. The outer end of the electrode contacts the inner end of the connecting piece when the electrode gland is threadedly connected to the inner end of the electrode connection seat.

8. The electroencephalogram acquisition device according to claim 1, characterized in that: A reinforcing rib is connected between two adjacent mounting portions among the seven mounting portions.

9. The EEG acquisition device according to claim 1, characterized in that: The radius of the virtual curved surface is between 50 mm and 70 mm.

10. The electroencephalogram acquisition device according to claim 1, characterized in that: The EEG acquisition device comprises a splicing piece and a plurality of the EEG acquisition sub-devices, two adjacent EEG acquisition sub-devices have adjacent and oppositely disposed outer edges, and the splicing piece is connected to the two oppositely disposed outer edges.

11. The electroencephalogram acquisition device according to claim 10, characterized in that: The splicing piece is provided with two splicing grooves, and the two oppositely arranged outer edges are snap-connected to the splicing grooves in a one-to-one correspondence.

12. An electroencephalogram acquisition device, characterized in that: The device comprises an electroencephalogram (EEG) acquisition sub-device, wherein the electroencephalogram (EEG) acquisition sub-device comprises: A collection seat, the collection seat comprising a frame, a plurality of mounting parts evenly distributed on the frame, so that the center distances between adjacent mounting parts in the plurality of mounting parts all have a predetermined value, the frame is configured to be able to splice other EEG collection sub-devices along a plurality of splicing directions, wherein: along each of the plurality of splicing directions, the distance from the center of the mounting part located on the edge area of ​​the frame to the outer edge of the frame is less than or equal to half of the predetermined value, so that the center distance between the mounting part on the edge area of ​​the frame and the mounting part of other EEG collection sub-devices has the predetermined value; and An electrode assembly, wherein at least one of the plurality of mounting portions is detachably mounted with the electrode assembly, the electrode assembly comprising an electrode, the electrode facing the inner side of the collection seat, and the collection end of the electrode being located on a virtual arc surface on the inner side of the collection seat.

13. The electroencephalogram acquisition device according to claim 12, characterized in that: The EEG acquisition sub-device has the same structure as the other EEG acquisition sub-devices.

14. An electroencephalogram acquisition device, characterized in that: It comprises a head-mounted device and an EEG acquisition device as described in any one of claims 1 to 13, wherein the acquisition seat is connected to the head-mounted device, and the acquisition end of the electrode contacts the head of the subject when the head-mounted device is worn on the subject's head.

Images