A head-mounted device based on a brain-computer interface

Abstract

The utility model relates to the technical field of head -mounted device, concretely is a kind of head-mounted device based on brain-computer interface, including elastic headgear and acquisition probe, the elastic headgear and acquisition probe one side is provided with outer cover.The utility model, by setting up air bag and inflation assembly cooperation use, when wearing, after the device is worn on the head of user, inflation assembly can be used to inflate air bag, and then air bag is fixed, so that air bag passes through elastic headgear and is pressed on the scalp of user by acquisition probe, by filling into the air volume of air bag, adjust the pressure in air bag, and then adjust the force of air bag compression elastic headgear and acquisition probe, the head of user is big, can be less filled with air, the head of user is small, can be more filled with air, so whether the head of user is big or small, the device can be adjusted to ensure that motor and scalp contact at the same time, will not excessively extrude the head of user, improve the practicability of the device.

Description

Technical Field

[0001] This utility model relates to the field of head-mounted device technology, specifically a head-mounted device based on a brain-computer interface. Background Technology

[0002] Non-invasive brain-computer interface (BCI) technology is a technique that collects electrophysiological signals from the surface of the brain and converts them into instruction codes that can be recognized by a computer or external device using signal processing and pattern recognition algorithms, thereby enabling natural human-computer interaction. Currently, the most common and feasible measurement method is the use of an electrode cap. This device records brain electrical activity signals from the scalp surface using multiple spherical electrodes. The collected signals are amplified, filtered, and preprocessed before being transmitted to a computer for further analysis to extract control-related feature information.

[0003] In practical applications, the electrode caps need to fit snugly against the scalp to ensure accurate signal acquisition. Therefore, such devices typically consist of an elastic headgear and a acquisition probe. The elastic headgear allows the probe to fit snugly against the user's head, maintaining stable contact. The headgear has a certain degree of elasticity to adapt to different head sizes. However, this design also has certain limitations: if the user's head is large, the headgear's tightness may be too strong, potentially causing discomfort after prolonged wear; if the head is small, the headgear may not provide sufficient restraint, resulting in insufficient contact between some electrodes and the scalp, thus reducing signal acquisition quality and affecting the accuracy and reliability of EEG data. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention proposes a head-mounted device based on a brain-computer interface, which can autonomously control the pressure of the fixed acquisition probe.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a head-mounted device based on a brain-computer interface, comprising an elastic head cover and a data acquisition probe, wherein an outer cover is provided on one side of the elastic head cover and the data acquisition probe, and an airbag is provided between the outer cover and the elastic head cover, one end of the airbag is fixedly connected to a valve core, and one end of the valve core penetrates through the outer cover and extends to the outside of the outer cover, and an inflation component is provided on one side of the valve core located outside the outer cover.

[0006] Preferably, the inflation assembly includes an inflatable bladder, and the side wall of the inflatable bladder is provided with an air intake hole and an air exhaust hole. The inner walls of the air intake hole and the air exhaust hole are fixedly connected with a one-way valve. One end of the air exhaust hole is connected to a rigid tube, and one side wall of the rigid tube is connected to an air pipe. One end of the air pipe is detachably connected to a valve core. A pressure indicator assembly is provided inside the rigid tube.

[0007] Preferably, the pressure indicating component includes a piston that is slidably connected to the inner wall of the rigid tube, a spring that is fixedly connected to one side wall of the piston, and an adjusting component that is fixedly connected to one end of the spring.

[0008] Preferably, the adjusting assembly includes a pressure ring fixedly connected to one end of the spring, and the inner wall of the pressure ring is threaded with a bolt, one end of the bolt passing through the rigid tube and extending to the outside of the rigid tube, and the outer wall of the bolt being rotatably connected to the rigid tube.

[0009] Preferably, the outer wall of the rigid tube is provided with a marking groove.

[0010] Preferably, the outer wall of the piston is fixedly fitted with a soft sleeve, and the outer wall of the soft sleeve is interference-fitted with the inner wall of the rigid tube.

[0011] Preferably, a retaining ring is provided below the piston, and the retaining ring is fixedly connected to the inner wall of the rigid tube.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes an airbag and an inflation component. When worn, the airbag is inflated after the device is placed on the user's head, securing it in place. This allows the airbag to press the acquisition probe against the user's scalp through the elastic headband. By inflating the airbag, the pressure within it can be adjusted, thereby regulating the pressure exerted by the airbag on the elastic headband and acquisition probe. Users with larger heads can inflate less air, while those with smaller heads can inflate more. This ensures that the device maintains contact between the motor and the scalp without excessively compressing the user's head, regardless of head size, thus enhancing the device's practicality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the inflatable component structure of this utility model; Figure 4 for Figure 3 Enlarged structural diagram of point A in the middle.

[0014] In the diagram: 1. Elastic head cover; 2. Data acquisition probe; 3. Outer cover; 4. Airbag; 5. Valve core; 6. Inflatable airbag; 7. Intake port; 8. Exhaust port; 9. One-way valve; 10. Rigid tube; 11. Air tube; 12. Piston; 13. Spring; 14. Pressure ring; 15. Bolt; 16. Marking groove; 17. Retaining ring. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Please see Figures 1 to 4 A head-mounted device based on a brain-computer interface includes an elastic head cover 1 and a data acquisition probe 2. An outer cover 3 is provided on one side of the elastic head cover 1 and the data acquisition probe 2, and an airbag 4 is provided between the outer cover 3 and the elastic head cover 1. One end of the airbag 4 is fixedly connected to a valve core 5, and one end of the valve core 5 passes through the outer cover 3 and extends to the outside of the outer cover 3. An inflation component is provided on one side of the valve core 5 located outside the outer cover 3.

[0017] This product is suitable for users with significantly different head sizes (adults and children may require different sized headbands). During use, the airbag 4 works in conjunction with the inflation component. When worn, the airbag 4 is inflated after being placed on the user's head, securing it in place. This allows the airbag 4 to press the acquisition probe 2 against the user's scalp via the elastic headband 1. The amount of air added to the airbag 4 adjusts the pressure within it, thus regulating the pressure exerted by the airbag 4 on the elastic headband 1 and acquisition probe 2. Users with larger heads require less air, while those with smaller heads require more. This ensures that the device maintains contact between the motor and the scalp without excessively compressing the user's head, enhancing its practicality. It should be noted that the shape of the elastic headband 1 shown in the diagram is a shape formed by conforming to the user's head after contact; it has sufficient deformation capacity and is not a shape created by stretching the elastic headband 1 to its limit.

[0018] See Figure 3 and Figure 4 The inflation assembly includes an inflatable bladder 6, and the side wall of the inflatable bladder 6 is provided with an air intake hole 7 and an air exhaust hole 8. The inner walls of the air intake hole 7 and the air exhaust hole 8 are fixedly connected with a one-way valve 9. One end of the air exhaust hole 8 is connected to a rigid tube 10, and one side wall of the rigid tube 10 is connected to an air tube 11. One end of the air tube 11 is detachably connected to a valve core 5. A pressure indicator component is provided inside the rigid tube 10. By setting the inflatable bladder 6 and the rigid tube 10 to work together, when inflating, squeezing the inflatable bladder 6 allows gas to enter the rigid tube 10 through the air exhaust hole 8. The gas entering the rigid tube 10 enters the airbag 4 through the air tube 11, completing the inflation of the airbag 4. When the inflatable bladder 6 is released, gas enters the inflatable bladder 6 through the air intake hole 7.

[0019] See Figure 3 and Figure 4The pressure indicator component includes a piston 12 that is slidably connected to the inner wall of the rigid tube 10. A spring 13 is fixedly connected to one side wall of the piston 12, and an adjustment component is fixedly connected to one end of the spring 13. By setting the piston 12 and the spring 13 to work together, as the pressure inside the airbag 4 increases, a greater pressure is required to inflate the airbag 4. This causes the air pressure inside the rigid tube 10 to increase continuously during inflation. The increased air pressure presses the spring 13 and the piston 12, causing the piston 12 to move. The pressure inside the rigid tube 10 is determined by the distance the piston 12 moves, and thus the pressure inside the airbag 4 is determined.

[0020] See Figure 3 and Figure 4 The adjusting assembly includes a pressure ring 14 fixedly connected to one end of the spring 13, and a bolt 15 is threadedly connected to the inner wall of the pressure ring 14. One end of the bolt 15 passes through the rigid tube 10 and extends to the outside of the rigid tube 10. The outer wall of the bolt 15 is rotatably connected to the rigid tube 10. By setting the pressure ring 14 and the bolt 15 to work together, after the force of the spring 13 decreases, the bolt 15 can be rotated, so that the bolt 15 drives the pressure ring 14 to move, and the pressure ring 14 compresses one end of the spring 13 to recharge the spring 13.

[0021] See Figure 3 and Figure 4 The outer wall of the rigid tube 10 is provided with a marking groove 16. By setting the marking groove 16, it can be determined whether the piston 12 has reached the required pressure. The position of the marking groove 16 can be obtained through multiple wearing and inflation tests, and is determined to be the place where the piston 12 moves up and overcomes a certain elastic force of the spring 13. This ensures that when the piston 12 reaches the marking groove 16, the airbag 4 presses the sampling probe 2 on the user's head with appropriate force.

[0022] See Figure 3 and Figure 4 The outer wall of the piston 12 is fixedly fitted with a soft sleeve, and the outer wall of the soft sleeve is interference-fitted with the inner wall of the rigid tube 10; by setting the soft sleeve, the airtightness of the piston 12 can be increased.

[0023] See Figure 3 and Figure 4 A retaining ring 17 is provided below the piston 12, and the retaining ring 17 is fixedly connected to the inner wall of the rigid tube 10; by providing the retaining ring 17, the piston 12 can be limited.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A head-mounted device based on a brain-computer interface, comprising an elastic headband (1) and a data acquisition probe (2), characterized in that, The elastic head cover (1) and the acquisition probe (2) are provided with an outer cover (3) on one side, and an airbag (4) is provided between the outer cover (3) and the elastic head cover (1). One end of the airbag (4) is fixedly connected to a valve core (5), and one end of the valve core (5) passes through the outer cover (3) and extends to the outside of the outer cover (3). An inflation component is provided on one side of the valve core (5) located outside the outer cover (3).

2. The head-mounted device based on a brain-computer interface according to claim 1, characterized in that, The inflation assembly includes an inflatable bladder (6), and the side wall of the inflatable bladder (6) is provided with an air intake hole (7) and an air exhaust hole (8). The inner walls of the air intake hole (7) and the air exhaust hole (8) are fixedly connected with a one-way valve (9). One end of the air exhaust hole (8) is connected to a rigid tube (10), and one side wall of the rigid tube (10) is connected to an air pipe (11). One end of the air pipe (11) is detachably connected to the valve core (5). A pressure indicator assembly is provided inside the rigid tube (10).

3. A head-mounted device based on a brain-computer interface according to claim 2, characterized in that, The pressure indicating component includes a piston (12) that is slidably connected to the inner wall of the rigid tube (10), a spring (13) that is fixedly connected to one side wall of the piston (12), and an adjusting component that is fixedly connected to one end of the spring (13).

4. A head-mounted device based on a brain-computer interface according to claim 3, characterized in that, The adjustment assembly includes a pressure ring (14) fixedly connected to one end of a spring (13), and a bolt (15) is threadedly connected to the inner wall of the pressure ring (14). One end of the bolt (15) passes through the rigid tube (10) and extends to the outside of the rigid tube (10). The outer wall of the bolt (15) is rotatably connected to the rigid tube (10).

5. A head-mounted device based on a brain-computer interface according to claim 4, characterized in that, The outer wall of the rigid tube (10) is provided with a marking groove (16).

6. A head-mounted device based on a brain-computer interface according to claim 3, 4, or 5, characterized in that, The piston (12) is fixedly fitted with a soft sleeve on its outer wall, and the outer wall of the soft sleeve is interference-fitted with the inner wall of the hard tube (10).

7. A head-mounted device based on a brain-computer interface according to claim 3, 4, or 5, characterized in that, A retaining ring (17) is provided below the piston (12), and the retaining ring (17) is fixedly connected to the inner wall of the rigid tube (10).

8. A head-mounted device based on a brain-computer interface according to claim 6, characterized in that, A retaining ring (17) is provided below the piston (12), and the retaining ring (17) is fixedly connected to the inner wall of the rigid tube (10).

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