Head-mounted electroencephalograph

Abstract

The invention discloses a head-mounted brain wave instrument which comprises a central control box, a connecting assembly is arranged below the central control box, and a wearing detection assembly is arranged below the connecting assembly; the wearable detection assembly comprises a common connecting plate, a plurality of supporting plates and a plurality of sets of detection mechanisms, the plurality of supporting plates are arranged on the outer side of the common connecting plate, the tops of the supporting plates are connected with the common connecting plate, the plurality of sets of detection mechanisms are uniformly divided into a plurality of groups and are matched with the plurality of supporting plates one by one, and the plurality of detection mechanisms in each group are uniformly distributed on the supporting plates; a plurality of sets of detection mechanisms are arranged, each set of detection mechanism comprises an electrode plate, and the electrode plates are electrically connected with the central control box, so that after the plurality of electrode plates are distributed and attached to the head of a user, relatively comprehensive brain wave information can be acquired at the same time, and the brain wave information is transmitted to the central control box; the brain wave information is processed by the brain wave processor, and feedback is made according to a processing result.

Description

Technical Field

[0001] The invention relates to the field of electroencephalograms, in particular to a head-mounted electroencephalogram. Background Art

[0002] With the continuous advancement of science and technology, people are increasingly studying brain activity. As a device that can detect electrical signals generated by brain activity, the electroencephalogram has shown great application potential in many fields. For example, in the medical field, by monitoring changes in brain waves, doctors can understand the functional state of the patient's brain; in the field of education, the electroencephalogram can be used to evaluate students' learning status and attention level.

[0003] When using brain waves to monitor the state of the brain, the electrode sheet needs to be placed on the scalp. In order to enable the electrodes to be stably placed relative to the brain, a head-mounted electroencephalogram has appeared on the market. When it is necessary to monitor brain activity, the head-mounted electroencephalogram can be worn on the head. There are many types of head-mounted electroencephalograms, such as a head-mounted electroencephalogram disclosed in a Chinese patent with a publication number of CN209437243U, which includes a wearable component for fixing to the user's head, a brain wave sensor for collecting the user's brain wave signal, a signal processing module for processing the output signal of the brain wave sensor, a communication module for communicating with a diagnostic center, a power supply and a control module; wherein the brain wave sensor, the signal processing module, the communication module, the power supply and the control module are installed on the wearable component, the output end of the brain wave sensor is connected to the input end of the signal processing module, the output end of the signal processing module is connected to the control module, and the control module is connected to the communication module and the power supply. The head-mounted electroencephalogram device provided by the above patent can not only accurately detect the user's brain wave information, but also has the advantage of being easy to carry, allowing the user to test themselves at any time, and is highly practical.

[0004] Although the electroencephalogram provided by the above patent can make the electrode sheet fit stably with the user's head, it has some defects. For example, the head-mounted electroencephalogram provided by the above patent generally includes a brain wave sensor. When the brain wave sensor fits the brain under the action of the wearable component, it can only monitor a certain part of the brain. If more complete brain activity information is to be obtained, multiple electroencephalograms provided by the above patent need to be worn on the user's head at the same time, which is less practical and more cumbersome to operate. Summary of the invention

[0005] The purpose of the present invention is to provide a head-mounted electroencephalogram (EEG) device, aiming to improve the problem that the EEG device is inconvenient to obtain complete brain wave activity information at the same time.

[0006] The present invention is implemented as follows: a head-mounted electroencephalogram instrument includes a central control box, a connecting component is arranged below the central control box, and a wearing detection component is arranged below the connecting component; the wearing detection component includes a common connection plate, multiple support plates and multiple sets of detection mechanisms, the multiple support plates are arranged on the outside of the common connection plate, and the tops are connected to the common connection plate, the multiple sets of detection mechanisms are divided into multiple groups, and are adapted to the multiple support plates one by one, and the multiple detection mechanisms in each group are evenly distributed on the support plates.

[0007] Preferably, the support plate is configured as an arc-shaped structure, and the multiple support plates are located on the same spherical surface, and the central angle of the spherical surface is greater than 180°.

[0008] Preferably, a plurality of snap grooves are provided on the common connection plate, and the plurality of snap grooves are evenly distributed on the edge of the common connection plate. A snap plate is fixedly provided on the top of the support plate, and the snap plate is installed in the snap grooves.

[0009] Preferably, the detection mechanism includes an electrode sheet, a spring, a support tube and a first nut, the electrode sheet is arranged below the support tube, the first nut is threadedly sleeved on the top of the support tube, and the spring is sleeved on the outside of the support tube.

[0010] Preferably, a second through hole is provided in the middle of the common plate, a plurality of first through holes are provided on the support plate, the support tube passes through the through holes, the spring is in a compressed state, and one end contacts the common plate or the support plate, while the other end contacts the bottom of the support tube.

[0011] Preferably, the connecting assembly includes a connecting mechanism and a plurality of lower pressing plates, the lower pressing plates are arranged as an arc-shaped structure, the tops of the plurality of lower pressing plates are connected with an annular plate in common, and the annular plate is sleeved on the connecting mechanism.

[0012] Preferably, the connecting mechanism includes a first threaded tube and a second nut, the inner and outer sides of the first threaded tube are provided with a threaded structure, and an end edge is fixedly provided at the bottom of the first threaded tube, the end edge is connected to the common plate by bolts, and the second nut is threadedly sleeved on the outside of the first threaded tube.

[0013] Preferably, the number of the lower pressure plates is equal to the number of the support plates, and they are arranged directly above the support plates. A slot is provided on the upper side of the support plate, and the bottom of the lower pressure plate is inserted into the slot; the annular plate is sleeved on the first threaded tube.

[0014] Preferably, a second threaded tube is provided at the lower end of the central control box, the second threaded tube is threadedly inserted into the first threaded tube, a grip rod is provided at the top of the central control box, and an operation screen is provided in the middle of the central control box.

[0015] Preferably, a signal processing module is provided on the inner side of the central control box, the signal processing module includes a filter, an amplifier, an analog-to-digital converter, a microprocessor and a storage unit, the filter is connected to the electrode sheet, the input end of the amplifier is connected to the output end of the filter, and the output end is connected to the input end of the analog-to-digital converter, the output end of the analog-to-digital converter is connected to the input end of the microprocessor, and the output end of the microprocessor is connected to the storage unit; the output end of the microprocessor is also connected to a speaker and an operation screen.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention is provided with multiple sets of detection mechanisms, and each set of detection mechanisms includes electrode sheets, and the electrode sheets are electrically connected to the central control box. Therefore, after the multiple electrode sheets are distributed and fitted on the head of the user, more comprehensive brain wave information can be obtained at the same time, and the brain wave information is transmitted to the central control box, which processes the brain wave information and gives feedback based on the processing results.

[0018] 2. The present invention installs multiple support plates on the side of the common connecting plate to form a spherical shell with a central angle greater than 180°. The deformation characteristics of the spherical shell can be used to put the device on the user's head, and under the action of the spherical shell, the device can be stably placed.

[0019] 3. The present invention provides a support tube on the electrode sheet, and a spring is sleeved on the support tube. The support tube can be controlled to move under the action of the spring, so that the electrode sheet can be stably and closely arranged at different parts of the head. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a first schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a second schematic diagram of the overall structure of the present invention;

[0022] Figure 3 is a third schematic diagram of the overall structure of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the wear detection component of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the support plate of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the common connection plate of the present invention;

[0026] Figure 7 It is a structural schematic diagram of the detection mechanism of the present invention;

[0027] Figure 8 is a schematic diagram of the structure of the connection assembly of the present invention;

[0028] Fig. 9 It is a structural schematic diagram of the lower pressing plate of the present invention;

[0029] Fig.10 It is a structural schematic diagram of the connection mechanism of the present invention;

[0030] Fig.11 It is a structural schematic diagram of the central control box of the present invention;

[0031] Fig.12 It is a schematic diagram of the components inside the central control box of the present invention.

[0032] In the figure: 1. Wear detection component; 11. Support plate; 111. First through hole; 112. Slot; 113. Buckle plate; 12. Detection mechanism; 121. Electrode sheet; 122. Spring; 123. Support tube; 124. First nut; 13. Common plate; 131. Buckle groove; 132. Second through hole; 2. Connecting component; 21. Connecting mechanism; 211. First threaded tube; 212. End edge; 213. Second nut; 22. Lower pressure plate; 221. Ring plate; 3. Central control box; 31. Grip; 32. Second threaded tube; 33. Operation screen. DETAILED DESCRIPTION

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The following is a further description with reference to the accompanying drawings and specific embodiments:

[0035] Example 1

[0036] In order to monitor different parts of the head at the same time and obtain more comprehensive brain activity information, this embodiment provides a new electroencephalogram. When the electroencephalogram is monitored on the head of the user, the electroencephalogram is worn on the head and connected to a power source. The electroencephalogram can collect brain waves from different parts of the head of the user through the work of the electroencephalogram, and the brain activity information can be obtained after processing the collected information. In addition, timely feedback can be given when the brain activity information exceeds the limit value so that the operator can take corresponding measures.

[0037] like Figure 1 , Figure 2 , Figure 3As shown, specifically, the electroencephalogram includes a central control box 3, a connecting component 2 and a wear detection component 1. The central control box 3 is arranged above the wear detection component 1, and the connecting component 2 is installed between the central control box 3 and the wear detection component 1. Therefore, under the action of the connecting component 2, the central control box 3 is stably connected to the wear detection component 1, and it is convenient to disassemble the central control box 3 and the wear detection component 1 according to needs. A grip 31 is arranged on the top of the central control box 3, and an operation screen 33 is arranged in the middle of the central control box 3.

[0038] like Figure 4 As shown, in order to collect brain waves from different parts of the user's head, the wearable detection component 1 includes a common connection plate 13, multiple support plates 11 and multiple detection mechanisms 12. The common connection plate 13 is set as a curved surface structure and is installed on the top of multiple support plates 11. The support plate 11 is set as an arc structure, and multiple support plates 11 are evenly distributed on the outside of the common connection plate 13. Therefore, the support plates 11 and the common connection plates 13 form a spherical shell structure, and the bottom of the spherical shell is set as an opening, and the center angle of the spherical shell is greater than 180°. When performing brain wave detection, the spherical shell composed of the common connection plate 13 and the support plate 11 is directly mounted on the user's head. In addition, because the support plate 11 always has the characteristic of restoring deformation, after the spherical shell is mounted on the user's head, the spherical shell can be stably placed.

[0039] like Figure 4 , Figure 7 As shown, the multiple detection mechanisms 12 are divided into multiple groups and matched with the multiple support plates 11 one by one. The multiple detection mechanisms 12 in each group are evenly distributed on the support plate 11, and each detection mechanism 12 includes an electrode sheet 121. Therefore, when the support plate 11 and the common plate 13 are set on the head of the user, the electrode sheet 121 is set to fit the head. In addition, the electrode sheet 121 is electrically connected to the central control box 3, so that the brain waves collected by the electrode sheet 121 are transmitted to the central control box 3, so that the brain waves can be processed by the central control box 3.

[0040] like Fig.11 , Fig.12As shown, in order to realize the processing of brain waves, a signal processing module is arranged inside the central control box 3, and the signal processing module includes a filter, an amplifier, an analog-to-digital converter, a microprocessor and a storage unit. The filter is connected to the electrode sheet 121, the input end of the amplifier is connected to the output end of the filter, and the output end is connected to the input end of the analog-to-digital converter, the output end of the analog-to-digital converter is connected to the input end of the microprocessor, and the output end of the microprocessor is connected to the storage unit. Since the brain wave signal is very weak, usually at the microvolt level, an amplifier is required to amplify it to a suitable amplitude for subsequent processing and analysis. The performance of the amplifier directly affects the quality and detection accuracy of the brain wave signal, so it is necessary to select a high-gain, low-noise amplifier. Various interference signals are often mixed in the brain wave signal, such as environmental noise, artifacts generated by muscle activity, etc. The function of the filter is to remove these interference signals and improve the quality of the brain wave signal. The filter can be divided into different types such as low-pass filter, high-pass filter and band-pass filter. The appropriate filter type and parameters are selected according to the characteristics of the brain wave signal. After being processed by the amplifier and filter, the brain wave signal is still an analog signal. In order to facilitate digital signal processing, analog signals need to be converted into digital signals. The analog-to-digital converter is the key component to complete this task. The microprocessor is the core part of the signal processing module, which is responsible for further processing and analysis of digital signals. The main functions of the microprocessor include signal filtering, feature extraction, classification and recognition, etc. Through these processes, useful information in brain wave signals can be extracted, such as the frequency, amplitude, phase, etc. of brain waves. The microprocessor can use different types of chips such as single-chip microcomputers and digital signal processors (DSPs), and select a suitable microprocessor according to specific application requirements. The storage unit is used to store brain wave signals and processing results for subsequent viewing and analysis. The storage unit can use different types of memories such as flash memory and EEPROM, and select a suitable storage unit according to the requirements of storage capacity and read and write speed.

[0041] like Fig.12 As shown, in addition, the output end of the microprocessor is also connected to a speaker and an operation screen. The processed information can be displayed on the operation screen, and it is convenient for the staff to operate the operation screen to control the operation of the device. The setting of the speaker is convenient for broadcasting the corresponding information parameters. After the microprocessor accurately judges the user's brain wave state according to the brain wave characteristic parameters, it can also perform detection feedback, and the music, sound effects or voice prompts played during the feedback. For example, when the user is in a relaxed state, soft and soothing music is played; when the user is in a tense state, a warning sound is issued.

[0042] like Figure 7As shown, in order to stably install the electrode sheet 121 on the support plate 11, and enable the electrode sheet 121 to fit the brain. The detection mechanism 12 also includes a spring 122, a support tube 123 and a first nut 124, and the support tube 123 is set as a convex structure. At the same time, a second through hole 132 is set in the middle of the common plate 13, and a plurality of first through holes 111 are set on the support plate 11. When the electrode sheet 121 is installed on the support plate 11 or the common plate 13, the support tube 123 is set through the through hole, and the spring 122 is sleeved on the support tube 123 and is in a compressed state. At this time, the upper end of the spring 122 presses the area around the through hole, and the lower end presses the bottom of the support tube 123. In addition, the electrode sheet 121 is installed below the support tube 123. Therefore, under the action of the spring 122, the electrode sheet 121 can always have a tendency to stay away from the support plate 11 or the common plate 13, so that the electrode sheet 121 fits on the head. In order to prevent the electrode sheet 121 from being detached when the device is not in use, the first nut 124 is threadedly sleeved on the top of the support tube 123 and is located above the support plate 11 or the common plate 13, thereby limiting the position of the support tube 123.

[0043] like Figure 8 , Fig.10 As shown, in order to realize the detachable connection between the central control box 3 and the wear detection component 1, the connection component 2 includes a connection mechanism 21, and the connection mechanism 21 includes a first threaded tube 211, the inner side of the first threaded tube 211 is provided with a threaded structure, and an end edge 212 is fixedly provided at the bottom of the first threaded tube 211, and the end edge 212 is connected by bolts and arranged on the common connection plate 13. A second threaded tube 32 is provided at the lower end of the central control box 3, and the second threaded tube 32 is threadedly inserted into the first threaded tube 211. Therefore, under the action of the connection mechanism 21, the common connection plate 13 and the central control box 3 are stably installed at the upper and lower ends of the first threaded tube 211, and can be disassembled according to needs.

[0044] Example 2

[0045] like Figure 5 , Figure 6 As shown, on the basis of Example 1, in order to be able to disassemble the support plate 11 as needed, a plurality of snap grooves 131 are provided on the common plate 13, and the plurality of snap grooves 131 are evenly distributed on the edge of the common plate 13, and a snap plate 113 is fixedly provided on the top of the support plate 11, and the snap plate 113 and the snap groove 131 are both configured as convex structures, and the snap plate 113 is installed in the snap groove 131, so that the support plate 11 is stably installed on the side of the common plate 13, and the common plate 13 and the support plate 11 can be disassembled as needed.

[0046] like Figure 5 , Figure 8 , Fig. 9As shown, in order to stably install the support plate 11 on the joint plate 13, the connection mechanism 21 also includes a second nut 213, and the inner and outer sides of the first threaded tube 211 are both provided with a threaded structure, so the second nut 213 is threadedly sleeved on the outer side of the first threaded tube 211. At the same time, the connection assembly 2 also includes a plurality of lower pressing plates 22, which are arranged in an arc structure, and the tops of the plurality of lower pressing plates 22 are connected with an annular plate 221, and the annular plate 221 is sleeved on the first threaded tube 211. The number of the lower pressing plates 22 is equal to the number of the support plates 11, and they are arranged directly above the support plates 11, and a slot 112 is arranged on the upper side of the support plate 11, and the bottom of the lower pressing plate 22 is inserted into the slot 112, so that when the second nut 213 is rotated, the annular plate 221 can be controlled to rise and fall. When the annular plate 221 descends, the lower pressing plate 22 is forced to descend and press the support plate 11, thereby making the support plate 11 stably installed relative to the joint plate 13.

[0047] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A head-mounted electroencephalogram instrument, characterized in that: The invention comprises a central control box (3), a connecting component (2) is arranged below the central control box (3), and a wear detection component (1) is arranged below the connecting component (2); the wear detection component (1) comprises a common connection plate (13), a plurality of support plates (11) and a plurality of detection mechanisms (12); the plurality of support plates (11) are arranged on the outside of the common connection plate (13) and are connected to the common connection plate (13) at the top; the plurality of detection mechanisms (12) are divided into a plurality of groups and are matched with the plurality of support plates (11) one by one; the plurality of detection mechanisms (12) in each group are evenly distributed on the support plate (11).

2. A head-mounted electroencephalogram device according to claim 1, characterized in that: The support plate (11) is configured as an arc-shaped structure, and a plurality of the support plates (11) are located on the same spherical surface, and the central angle of the spherical surface is greater than 180°.

3. A head-mounted electroencephalogram device according to claim 2, characterized in that: A plurality of snap-fit ​​grooves (131) are arranged on the common connection plate (13), and the plurality of snap-fit ​​grooves (131) are evenly distributed on the edge of the common connection plate (13). A snap-fit ​​plate (113) is fixedly arranged on the top of the support plate (11), and the snap-fit ​​plate (113) is installed in the snap-fit ​​grooves (131).

4. A head-mounted electroencephalogram device according to claim 1, characterized in that: The detection mechanism (12) comprises an electrode sheet (121), a spring (122), a support tube (123) and a first nut (124); the electrode sheet (121) is arranged below the support tube (123); the first nut (124) is threadedly sleeved on the top of the support tube (123); and the spring (122) is sleeved on the outside of the support tube (123).

5. A head-mounted electroencephalogram device according to claim 4, characterized in that: A second through hole (132) is provided in the middle of the common plate (13), a plurality of first through holes (111) are provided on the support plate (11), the support tube (123) passes through the through holes, the spring (122) is in a compressed state, one end of the spring is in contact with the common plate (13) or the support plate (11), and the other end of the spring is in contact with the bottom of the support tube (123).

6. The head-mounted electroencephalogram device according to claim 1, characterized in that: The connection assembly (2) comprises a connection mechanism (21) and a plurality of lower pressing plates (22); the lower pressing plates (22) are arranged as an arc-shaped structure; the tops of the plurality of lower pressing plates (22) are connected to a ring plate (221); and the ring plate (221) is sleeved on the connection mechanism (21).

7. A head-mounted electroencephalogram device according to claim 6, characterized in that: The connection mechanism (21) comprises a first threaded tube (211) and a second nut (213); the inner and outer sides of the first threaded tube (211) are both provided with threaded structures, and an end edge (212) is fixedly provided at the bottom of the first threaded tube (211); the end edge (212) is connected to the common plate (13) by bolts, and the second nut (213) is threadedly sleeved on the outer side of the first threaded tube (211).

8. A head-mounted electroencephalogram device according to claim 7, characterized in that: The number of the lower pressing plates (22) is equal to the number of the supporting plates (11), and they are arranged directly above the supporting plates (11). A slot (112) is arranged on the upper side of the supporting plate (11), and the bottom of the lower pressing plate (22) is inserted into the slot (112); the annular plate (221) is sleeved on the first threaded tube (211).

9. The head-mounted electroencephalogram device according to claim 7, characterized in that: A second threaded tube (32) is provided at the lower end of the central control box (3), and the second threaded tube (32) is threadedly inserted into the first threaded tube (211). A grip rod (31) is provided at the top of the central control box (3), and an operating screen (33) is provided in the middle of the central control box (3).

10. The head-mounted electroencephalogram device according to claim 1, characterized in that: A signal processing module is arranged inside the central control box (3), and the signal processing module includes a filter, an amplifier, an analog-to-digital converter, a microprocessor and a storage unit. The filter is connected to the electrode sheet (121), the input end of the amplifier is connected to the output end of the filter, and the output end is connected to the input end of the analog-to-digital converter, the output end of the analog-to-digital converter is connected to the input end of the microprocessor, and the output end of the microprocessor is connected to the storage unit; the output end of the microprocessor is also connected to a speaker and an operation screen (33).

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