Dynamically adjustable electroencephalogram electrode tip for helmet

Abstract

The utility model relates to the technical field of electroencephalogram signal monitoring equipment, in particular to a dynamically adjustable electroencephalogram electrode tip for a helmet, which comprises a helmet shell, an electrode tip mounting plate is fixedly mounted in the helmet shell, and an electrode adjusting assembly is arranged between the electrode tip mounting plate and the helmet shell; through cooperation with the cap body output terminal, the position and angle of the electrode cap body can be flexibly adjusted, so that dynamic adjustment of the contact pin body at different positions is achieved to better fit different positions of the head of a user and adapt to different electroencephalogram collection requirements, the signal output line penetrates through the helmet shell to be electrically connected with the knob, and the signal output line is convenient to use. The arc-shaped contact piece at the bottom of the knob is matched with the cap body output terminal, and the cap body output terminal is electrically connected with the electrode cap body, so that the stability and the reliability of signal transmission are ensured, and the electroencephalogram signals can be effectively transmitted.

Description

Technical Field

[0001] This application relates to the field of electroencephalogram (EEG) signal monitoring equipment technology, and in particular to a dynamically adjustable EEG electrode head for use in a helmet. Background Technology

[0002] In the field of electroencephalography (EEG) monitoring technology, traditional helmet-mounted EEG electrodes have many limitations. Previous electrodes were typically fixed in a specific position on the helmet, making it difficult to adapt to the diverse needs of different individuals with varying head shapes, sizes, and EEG signal acquisition locations. The size and curvature of different users' heads vary significantly, and electrodes in fixed positions may not accurately conform to the scalp, leading to unstable and inaccurate EEG signal acquisition.

[0003] A search revealed Chinese Patent Publication No. CN102323857A, which discloses a brain-computer interface electrode cap based on an elastic array. The cap includes a flexible electrode body with multiple input terminals, each equipped with an elastic array of electrodes. This elastic array-based brain-computer interface electrode cap offers advantages such as comfortable wear, quick and convenient use, high signal-to-noise ratio, strong versatility, and good stability.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: the adjustment of the electrode position in the device is not flexible enough, and it cannot be dynamically adjusted according to the head shape and size of different users, which affects the stability and consistency of signal acquisition. Furthermore, the detection range of the stylus in the electrode cap is fixed and cannot be dynamically adjusted according to actual needs, limiting its applicability and the accuracy of signal acquisition. Utility Model Content

[0005] To address the problems mentioned in the background section, this application provides a dynamically adjustable EEG electrode head for helmets.

[0006] This application provides a dynamically adjustable EEG electrode head for a helmet, which adopts the following technical solution: A dynamically adjustable EEG electrode head for a helmet includes a helmet shell, an electrode head mounting plate is fixedly installed inside the helmet shell, and an electrode adjustment component is provided between the electrode head mounting plate and the helmet shell.

[0007] An electrode adjustment assembly includes a signal output line, an electrode cap, a stylus body, a limiting block, an annular groove, a cap output terminal, a knob, and a limiting cover tube. The signal output line passes through the helmet shell, and a knob is electrically connected to the bottom of the signal output line. The electrode cap is movably mounted on the bottom of the knob, and the stylus body is electrically connected to the bottom of the electrode cap. Limiting blocks are fixedly connected to both sides of the electrode cap. An annular groove is formed on the top of the electrode cap, and cap output terminals are provided inside the annular groove. The cap output terminals are electrically connected to the electrode cap, and the top of the cap output terminals is movably connected to the knob. The cap output terminals are also electrically connected to the input end at the bottom of the knob. A limiting cover tube is movably connected to the top of the knob, and the bottom of the limiting cover tube is fixedly connected to the top of the electrode cap.

[0008] The above solution enables flexible adjustment of the electrode cap, ensuring close contact between the electrode and the scalp and improving the stability of signal acquisition.

[0009] Optionally, the electrode adjustment assembly further includes a spring, a limiting rod, and a wire inlet hole. The spring is fixedly connected between the limiting cover tube and the helmet shell. The top of the limiting rod is fixedly connected to the helmet shell. The telescopic rod at the bottom of the limiting rod is fixedly sleeved with the limiting block. The wire inlet hole is opened through the top of the helmet shell.

[0010] The above solution enables automatic reset and precise positioning of the electrode cap, ensuring close contact between the electrode and the scalp and improving the stability of signal acquisition.

[0011] Optionally, the outer surface of the knob is provided with anti-slip texture, and its bottom is provided with an arc-shaped contact piece that matches the output terminal of the cap body. The curvature of the arc-shaped contact piece is adapted to the circumferential trajectory of the annular groove.

[0012] The above solution achieves an anti-slip design for the knob and precise adjustment of the electrode cap, ensuring close contact between the electrode and the scalp and improving the stability of signal acquisition.

[0013] Optionally, the spring is a helical spring, with its upper and lower ends fixed to the top of the limiting cover tube and the inner wall of the helmet shell respectively by a snap-fit ​​structure, and the compression stroke of the spring is matched with the extension stroke of the limiting rod.

[0014] The above solution achieves stable fixation of the spring and precise adjustment of the electrode cap, ensuring close contact between the electrode and the scalp and improving the stability of signal acquisition.

[0015] Optionally, the stylus body is made of conductive rubber material, and its end has a hemispherical protrusion structure with multiple micron-sized conductive contacts on the surface of the hemispherical protrusion.

[0016] The above solution achieves soft contact and multi-point conductivity of the stylus, ensuring close contact between the electrode and the scalp and improving the stability of signal acquisition.

[0017] Optionally, the limiting rod includes a hydraulic damping structure, and the surface of its telescopic rod is provided with scale markings, and the limiting block is provided with pointer markings that cooperate with the scale markings.

[0018] The above solution enables precise adjustment of the limiting rod and stable positioning of the electrode cap, ensuring close contact between the electrode and the scalp and improving the stability of signal acquisition.

[0019] In summary, this application includes the following beneficial technical effects:

[0020] A dynamically adjustable EEG electrode head for helmets features a rotatable knob that, in conjunction with the output terminal of the helmet body, allows for flexible adjustment of the electrode cap's position and angle. This enables dynamic adjustment of the stylus body at different positions to better fit the user's head and adapt to various EEG acquisition needs. A signal output line passes through the helmet shell and is electrically connected to the knob. An arc-shaped contact plate at the bottom of the knob is adapted to the output terminal of the helmet body, which is also electrically connected to the electrode cap. This structure ensures the stability and reliability of signal transmission, guaranteeing effective transmission of EEG signals. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the device in the embodiments of this application;

[0022] Figure 2 This is a schematic diagram of a partial structure of the device in an embodiment of this application;

[0023] Figure 3 This is a partial structural diagram of the electrode adjustment component in an embodiment of this application;

[0024] Figure 4 This is a schematic diagram of a partial structure of the electrode adjustment assembly in an embodiment of this application;

[0025] Reference numerals: 1. Helmet shell; 2. Electrode head mounting plate; 3. Electrode adjustment assembly; 301. Signal output line; 302. Electrode cap body; 303. Stimulus needle body; 304. Limiting block; 305. Annular groove; 306. Cap body output terminal; 307. Knob; 308. Limiting cover tube; 309. Spring; 310. Limiting rod; 311. Cable inlet hole. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0027] This application discloses a dynamically adjustable EEG electrode head for use in helmets.

[0028] Please see Figure 1 A dynamically adjustable EEG electrode head for a helmet includes a helmet shell 1, an electrode head mounting plate 2 fixedly installed inside the helmet shell 1, and an electrode adjustment assembly 3 disposed between the electrode head mounting plate 2 and the helmet shell 1.

[0029] Please see Figures 2 to 4 Electrode adjustment assembly 3 includes a signal output line 301, an electrode cap 302, a stylus body 303, a limiting block 304, an annular groove 305, a cap output terminal 306, a knob 307, and a limiting cover tube 308. The signal output line 301 passes through the helmet shell 1. The bottom of the signal output line 301 is electrically connected to the knob 307. The bottom of the knob 307 is movably mounted with the electrode cap 302. The bottom of the electrode cap 302 is electrically connected to the stylus body 303. The left and right sides of the electrode cap 302... Each electrode cap 302 is fixedly connected to a limiting block 304. An annular groove 305 is provided on the top of the electrode cap 302. Each annular groove 305 is provided with a cap output terminal 306. The cap output terminal 306 is electrically connected to the electrode cap 302. The top of the cap output terminal 306 is movably connected to the knob 307. The cap output terminal 306 is also electrically connected to the bottom access end of the knob 307. A limiting cover tube 308 is movably connected to the top of the knob 307. The bottom of the limiting cover tube 308 is fixedly connected to the top of the electrode cap 302.

[0030] The electrode adjustment assembly 3 also includes a spring 309, a limiting rod 310, and a wire inlet hole 311. The spring 309 is fixedly connected between the limiting cover tube 308 and the helmet shell 1. The top of the limiting rod 310 is fixedly connected to the helmet shell 1. The telescopic rod at the bottom of the limiting rod 310 is fixedly sleeved with the limiting block 304. The wire inlet hole 311 is opened through the top of the helmet shell 1.

[0031] The outer surface of the knob 307 is provided with anti-slip texture, and its bottom is provided with an arc-shaped contact piece that matches the output terminal 306 of the cap body. The curvature of the arc-shaped contact piece is adapted to the circumferential trajectory of the annular groove 305.

[0032] Spring 309 is a helical spring, and its upper and lower ends are fixed to the top of the limiting cover tube 308 and the inner wall of the helmet shell 1 respectively by a snap-fit ​​structure. The compression stroke of spring 309 is matched with the extension stroke of limiting rod 310.

[0033] The stylus body 303 is made of conductive rubber material, and its end has a hemispherical protrusion structure. The hemispherical protrusion surface is provided with multiple micron-level conductive contacts.

[0034] The limiting rod 310 includes a hydraulic damping structure, and its telescopic rod surface is provided with scale markings. The limiting block 304 is provided with corresponding pointer markings that cooperate with the scale markings.

[0035] Further explanation is needed: The electrode adjustment assembly 3 forms a crucial connection bridge between the helmet and the EEG acquisition electrodes. The signal output line 301 runs through the helmet shell 1, with one end connected to an external device and the other end connected to the knob 307, ensuring that the EEG signal can be transmitted stably. The knob 307 is not only the hub of signal transmission, but also movably connected to the electrode cap 302, playing a supporting and initial positioning role. The electrode cap 302 is connected to the top of the knob 307 through the limiting cover tube 308, and is supported by a spring 309 and a limiting rod 310 between it and the helmet shell 1, maintaining the stability of the overall structure and providing a reliable physical structure for the normal operation of the electrodes.

[0036] This component enables dynamic adjustment of electrode position and precise signal acquisition. By rotating the knob 307 with anti-slip texture, the bottom arc-shaped contact piece cooperates with the cap output terminal 306 to flexibly adjust the position of the electrode cap 302, thereby changing the contact point between the stylus body 303 and the scalp. The stylus body 303 is made of conductive rubber and has a hemispherical protrusion with micron-level conductive contacts at the end, which can better fit the scalp to collect EEG signals. The hydraulic damping structure and scale markings of the limit rod 310, together with the pointer markings on the limit block 304, make the adjustment process controllable and visible, helping to obtain more accurate EEG data.

[0037] The implementation principle of a dynamically adjustable EEG electrode head for a helmet according to an embodiment of this application is as follows:

[0038] First, in the signal access phase, the external EEG monitoring device establishes a connection with the electrode adjustment component 3 inside the helmet through the signal output line 301. The signal output line 301 passes through the helmet shell 1 and connects the device end to the knob 307 inside the component, laying the path for the subsequent transmission of EEG signals.

[0039] Secondly, in the electrode adjustment process, the user starts the adjustment operation by rotating the knob 307. The anti-slip texture on the outer surface of the knob 307 facilitates the application of force. Its rotation causes the bottom arc-shaped contact piece to slide on the cap output terminal 306. Since the cap output terminal 306 is electrically connected to the electrode cap 302, and the limit blocks 304 and limit rods 310 on both sides of the electrode cap 302 cooperate to guide it, the position of the electrode cap 302 can be flexibly adjusted.

[0040] Next, in the signal transmission process, when the position of the electrode cap 302 changes, the internal circuit state changes accordingly. The cap output terminal 306 senses the change in the state of the electrode cap 302 and transmits the relevant signal to the signal output line 301 through the knob 307, ensuring stable signal transmission inside the component.

[0041] Next, the contact acquisition action is performed. The electrode cap 302, once in place, causes the stylus body 303 at the bottom to make close contact with the scalp. The stylus body 303 is made of conductive rubber material, and its end has a hemispherical protrusion structure with multiple micron-level conductive contacts on its surface, which can effectively collect EEG signals from the scalp surface.

[0042] Finally, precise control is ensured. The hydraulic damping structure inside the limiting rod 310 can buffer and control the movement speed and force of the electrode cap 302. At the same time, the scale markings on the surface of the telescopic rod of the limiting rod 310, together with the pointer markings on the limiting block 304, allow the user to clearly observe the adjustment range of the electrode cap 302, achieving precise control and ensuring the acquisition of accurate and stable EEG data.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A dynamically adjustable electroencephalogram electrode head for a headgear comprising a headgear shell (1), characterized in that: The inside of the helmet shell (1) is fixedly provided with an electrode head mounting plate (2), and an electrode adjusting assembly (3) is arranged between the electrode head mounting plate (2) and the helmet shell (1); The electrode adjusting assembly (3) comprises a signal output line (301), an electrode cap body (302), a stylus body (303), a limiting block (304), an annular sliding groove (305), a cap output terminal (306), a knob (307) and a limiting cover pipe (308), the signal output line (301) penetrates through the helmet shell (1), the bottom of the signal output line (301) is electrically connected with the knob (307), the bottom of the knob (307) is movably mounted with the electrode cap body (302), the bottom of the electrode cap body (302) is electrically connected with the stylus body (303), the left and right sides of the electrode cap body (302) are fixedly connected with the limiting block (304), the top of the electrode cap body (302) is provided with the annular sliding groove (305), the inside of the annular sliding groove (305) is provided with the cap output terminal (306), the cap output terminal (306) is electrically connected with the electrode cap body (302), the top of the cap output terminal (306) is movably connected with the knob (307), and the cap output terminal (306) is electrically connected with the access end at the bottom of the knob (307), the top of the knob (307) is movably connected with the limiting cover pipe (308), and the bottom of the limiting cover pipe (308) is fixedly connected to the top of the electrode cap body (302).

2. A dynamically adjustable electroencephalogram electrode head for a helmet according to claim 1, wherein: The electrode adjusting assembly (3) further comprises a spring (309), a limiting rod (310) and a wire inlet hole (311), the spring (309) is fixedly connected between the limiting cover pipe (308) and the helmet shell (1), the top of the limiting rod (310) is fixedly connected with the helmet shell (1), the telescopic rod at the bottom of the limiting rod (310) is fixedly sleeved with the limiting block (304), and the wire inlet hole (311) is provided on the top of the helmet shell (1).

3. A dynamically adjustable electroencephalogram electrode head for a helmet according to claim 2, wherein: The outer surface of the knob (307) is provided with an anti-skid pattern, and the bottom is provided with an arc-shaped contact piece matched with the cap output terminal (306), and the curvature of the arc-shaped contact piece is matched with the circumferential track of the annular sliding groove (305).

4. A dynamically adjustable electroencephalogram electrode head for a helmet according to claim 3, wherein: The spring (309) is a spiral spring, and the upper and lower ends thereof are fixed to the top of the limiting cover pipe (308) and the inner wall of the helmet shell (1) through buckle structures respectively, and the compression stroke of the spring (309) is matched with the telescopic stroke of the limiting rod (310).

5. A dynamically adjustable electroencephalogram electrode head for a helmet according to claim 1, wherein: The stylus body (303) is made of conductive rubber material, and the distal end thereof is in a hemispherical protruding structure, and a plurality of micron-level conductive contacts are arranged on the hemispherical protruding surface.

6. A dynamically adjustable electroencephalogram electrode head for a helmet according to claim 2, wherein: The limiting rod (310) comprises a hydraulic damping structure, and the surface of the telescopic rod is provided with a scale mark, and the limiting block (304) is correspondingly provided with a pointer mark matched with the scale mark.

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