Electroencephalogram amplifier base for adapting to different head types

Abstract

The utility model provides an electroencephalogram amplifier base for adapting to different head types, which belongs to the technical field of signal processing equipment and comprises a base body, a silica gel plate and dry electrodes are mounted on the back of the base body, silica gel mounting cylinders are arranged on the silica gel plate in a protruding manner, each silica gel mounting cylinder is matched with one dry electrode, and the dry electrodes are arranged on the silica gel plate. A fixing device for fixing the dry electrode is arranged in each silica gel mounting barrel, each fixing device comprises a lock catch, two lock catch elastic pins are horizontally arranged at the top of each lock catch at intervals, and a mounting shaft of the dry electrode penetrates through an opening in the top of each silica gel mounting barrel and the corresponding lock catch to be matched with the corresponding two lock catch elastic pins; a plurality of silica gel mounting cylinders are arranged on the silica gel plate so that a plurality of dry electrodes can be mounted on the back face of the base body, automatic contraction and adaptation of the dry electrodes are achieved by means of elasticity and plasticity of silica gel materials, it is ensured that the dry electrodes can be tightly attached to the scalp under different head shapes, and therefore the electroencephalogram signal collecting precision and stability are improved.

Description

Technical Field

[0001] This utility model belongs to the field of signal processing equipment technology, and in particular relates to an EEG amplifier base for adapting to different head shapes. Background Technology

[0002] In fields such as brain science research, cognitive neurology, clinical medicine, and criminal psychology, the accurate acquisition and analysis of electroencephalogram (EEG) signals has extremely high application value. Traditional EEG amplifier bases typically use fixed, dry electrodes. These electrodes are often unable to adapt to different head shapes and scalp conditions, leading to unstable signal acquisition and affecting data quality. Especially in practical applications, where subjects have varying head shapes, fixed electrodes are difficult to fit snugly against the scalp, easily causing signal attenuation and noise interference, severely limiting the accuracy and application range of EEG signal acquisition.

[0003] To address the aforementioned issues, this invention proposes a novel EEG amplifier base adapted to different head shapes. This base utilizes the elasticity and plasticity of silicone material, combined with an innovative dry electrode design, to achieve automatic shrinkage and adaptation of the dry electrodes. This ensures a close fit to the scalp regardless of head shape, thereby improving the accuracy and stability of EEG signal acquisition. Utility Model Content

[0004] To address the aforementioned problems in the prior art, this utility model aims to provide an EEG amplifier base that adapts to different head shapes. This solves the problem that traditional EEG amplifier bases typically use fixedly connected dry electrodes, which often lead to unstable signal acquisition and affect data quality because they cannot adapt to different head shapes and scalp conditions.

[0005] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0006] An EEG amplifier base for adapting to different head shapes is provided, comprising a base body, a silicone plate and multiple dry electrodes mounted on the back of the base body, multiple silicone mounting cylinders protruding from the silicone plate, each silicone mounting cylinder matching one dry electrode, and a fixing device for fixing the dry electrode provided inside each silicone mounting cylinder, each fixing device including a latch disposed inside the silicone mounting cylinder, two latch spring pins horizontally spaced at the top of the latch, and the mounting shaft of the dry electrode passing through the top opening of the silicone mounting cylinder and the latch and engaging with the two latch spring pins.

[0007] The basic principle of this invention, a brainwave amplifier base adaptable to different head shapes, is as follows: When the base is worn on the subject's head, the silicone mounting sleeve slightly deforms to accommodate the dry electrodes as they conform to different head shapes. The silicone mounting sleeve simultaneously possesses upward and backward elasticity, achieving automatic retraction and adaptation of the dry electrodes. While adapting to different head shapes, the base also ensures the dry electrodes adhere to the scalp, forming a stable electrical signal transmission channel and ensuring the accuracy and stability of signal acquisition. Furthermore, when installing the dry electrodes on the back of the base, the mounting shaft is directly inserted through the top opening of the silicone mounting sleeve and between two locking pins, thus fixing the entire dry electrode to the back of the base. This allows for a detachable connection between the dry electrodes and the back of the base, simplifying and accelerating the installation and removal of the dry electrode module, improving efficiency. When the dry electrodes are damaged or need replacement, the user can easily complete the operation without replacing the entire brainwave amplifier, reducing operating costs and maintenance difficulty.

[0008] Furthermore, the silicone plate is detachably connected to the back of the base body, which facilitates the assembly and disassembly of the silicone plate and the back of the base body, and facilitates the later replacement and maintenance of the silicone plate and the dry electrode set on the silicone mounting cylinder.

[0009] Furthermore, the silicone sheet has clips on both sides, and the back of the base body has slots on both sides that engage with the clips. The engagement of the clips and slots allows for a detachable connection between the silicone sheet and the back of the base body.

[0010] Furthermore, each silicone mounting cylinder is equipped with a spring for supporting the silicone mounting cylinder. The spring provides support force to the silicone mounting cylinder, reducing deformation of the silicone mounting cylinder and preventing the silicone mounting cylinder from tilting after the dry electrode is installed.

[0011] Furthermore, each dry electrode includes a mounting plate with a mounting shaft on its lower end and multiple contact pins on its upper end. The mounting shaft is a cylindrical structure, narrower in the middle and wider at the tip, with a smooth transition between the middle and tip. The outer diameter of the tip is larger than the distance between the two locking spring pins. The multiple contact pins allow the dry electrode to acquire more and more accurate EEG signals, improving the accuracy and stability of signal acquisition.

[0012] Furthermore, a partition with a through hole in the middle is provided inside the silicone mounting cylinder, dividing the silicone mounting cylinder into a top mounting area and a bottom mounting area. The latch is set in the top mounting area, with the bottom of the latch contacting the upper surface of the partition and the top opening of the latch flush with the top opening of the silicone mounting cylinder. A conductive post is provided in the bottom mounting area, with the bottom opening of the latch passing through the through hole and connecting to the conductive post. The conductive post is connected to the circuit inside the base body. The two ends of the spring contact the back of the base body and the lower end surface of the partition of the silicone mounting cylinder, respectively. The partition enables the latch and spring to be installed and fixed inside the silicone mounting cylinder.

[0013] Furthermore, an elastic pad is provided between the lower end face of the mounting plate and the upper end face of the latch. The elastic pad forces the mounting shaft of the dry electrode into tight contact with the two latch spring pins, preventing the mounting shaft of the dry electrode from sliding vertically within the latch and ensuring the initial position of the dry electrode is stable.

[0014] The beneficial effects of this utility model are as follows: This utility model provides an EEG amplifier base for adapting to different head shapes. By setting multiple silicone mounting cylinders on a silicone plate, multiple dry electrodes can be installed on the back of the base body. Utilizing the elasticity and plasticity of silicone material, the dry electrodes can automatically shrink and adapt, ensuring a close fit to the scalp under different head shapes, thereby improving the accuracy and stability of EEG signal acquisition. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of an EEG amplifier base designed to adapt to different head shapes.

[0016] Figure 2 This is a schematic diagram of the internal cross-sectional structure of an EEG amplifier base designed to accommodate different head shapes.

[0017] Figure 3 This is a schematic diagram of a single dry electrode mating with a silicone mounting sleeve.

[0018] The components include: 1. Base body; 2. Silicone plate; 3. Dry electrode; 4. Silicone mounting cylinder; 5. Lock; 6. Lock spring pin; 7. Buckle; 8. Slot; 9. Spring; 10. Mounting plate; 11. Mounting shaft; 12. Contact pin; 13. Partition; 14. Top mounting area; 15. Bottom mounting area; 16. Elastic pad; 17. Conductive post. Detailed Implementation

[0019] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All inventions utilizing the concept of this utility model are protected.

[0020] like Figures 1-3 As shown, this utility model provides an EEG amplifier base for adapting to different head shapes, which includes a base body 1, a silicone plate 2 and multiple dry electrodes 3 mounted on the back of the base body 1.

[0021] Specifically, each dry electrode 3 includes a mounting plate 10. The lower end face of the mounting plate 10 has a mounting shaft 11, and the upper end face has multiple contact pins 12. The mounting shaft 11 has a cylindrical structure that is smaller in the middle and larger at the tip, with a smooth transition between the middle and tip of the mounting shaft 11. The outer diameter of the tip of the mounting shaft 11 is larger than the distance between the two locking spring pins 6. The multiple contact pins 12 allow the dry electrode 3 to acquire more and more accurate EEG signals, improving the accuracy and stability of signal acquisition.

[0022] Multiple silicone mounting cylinders 4 are raised on the silicone plate 2. Each silicone mounting cylinder 4 is matched with a dry electrode 3. Each silicone mounting cylinder 4 is provided with a fixing device for fixing the dry electrode 3. Each fixing device includes a latch 5 set in the silicone mounting cylinder 4. Two latch spring pins 6 are horizontally spaced at the top of the latch 5. The mounting shaft 11 of the dry electrode 3 passes through the top opening of the silicone mounting cylinder 4 and the latch 5 and cooperates with the two latch spring pins 6.

[0023] When the EEG amplifier base is worn on the subject's head, the silicone mounting sleeve 4 slightly deforms to accommodate different head shapes as the dry electrode 3 conforms to it. The silicone mounting sleeve 4 simultaneously possesses upward and backward elasticity, enabling the dry electrode 3 to automatically retract and adapt. While adapting to different head shapes, the EEG amplifier base also ensures the dry electrode 3 adheres to the scalp, forming a stable electrical signal transmission channel and guaranteeing the accuracy and stability of signal acquisition. Furthermore, when installing the dry electrode 3 on the back of the EEG amplifier base, the mounting shaft 11 of the dry electrode 3 is directly inserted through the top opening of the silicone mounting sleeve 4 and the locking buckle 5 between the two locking spring pins 6, thus fixing the entire dry electrode 3 to the back of the EEG amplifier base. This allows for a detachable connection between the dry electrode 3 and the back of the EEG amplifier base, making the installation and removal of the dry electrode 3 module simpler and faster, improving efficiency. When the dry electrode 3 is damaged or needs replacement, the user can easily complete the operation without replacing the entire EEG amplifier, reducing usage costs and maintenance difficulty.

[0024] The silicone plate 2 is detachably connected to the back of the base body 1, facilitating assembly and disassembly between the silicone plate 2 and the back of the base body 1, and making it easier to replace and repair the silicone plate 2 and the dry electrode 3 mounted on the silicone mounting cylinder 4. Specifically, the silicone plate 2 has clips 7 on both sides, and the back of the base body 1 has slots 8 on both sides that mate with the clips 7. The engagement of the clips 7 and the slots 8 enables the detachable connection between the silicone plate 2 and the back of the base body 1.

[0025] Each silicone mounting cylinder 4 is equipped with a spring 9 for supporting the silicone mounting cylinder 4. The spring 9 provides support force for the silicone mounting cylinder 4, reduces the deformation of the silicone mounting cylinder 4, and prevents the silicone mounting cylinder 4 from tilting after the dry electrode 3 is installed. Specifically, the silicone mounting cylinder 4 is equipped with a partition 13 with a through hole in the middle. The two ends of the spring 9 are in contact with the back of the base body 1 and the lower end surface of the partition 13 of the silicone mounting cylinder 4, respectively.

[0026] The silicone mounting cylinder 4 has a partition 13 with a through hole in the middle, which divides the silicone mounting cylinder 4 into a top mounting area 14 and a bottom mounting area 15. The latch 5 is set in the top mounting area 14, with the bottom of the latch 5 in contact with the upper surface of the partition 13 and the top opening of the latch 5 flush with the top opening of the silicone mounting cylinder 4. The bottom mounting area 15 has a conductive post 17, with the bottom opening of the latch 5 passing through the through hole and connecting to the conductive post 17. The conductive post 17 is connected to the circuit in the base body 1. The partition 13 enables the latch 5 to be installed and fixed in the silicone mounting cylinder 4.

[0027] Preferably, an elastic pad 16 is provided between the lower end face of the mounting plate 10 and the upper end face of the latch 5. The elastic pad 16 forces the mounting shaft 11 of the dry electrode 3 into tight contact with the two latch spring pins 6, preventing the mounting shaft 11 of the dry electrode 3 from sliding vertically within the latch 5, and ensuring the initial position of the dry electrode 3 is stable.

[0028] In summary, this utility model provides an EEG amplifier base adapted to different head shapes. By setting multiple silicone mounting cylinders 4 on the silicone plate 2, multiple dry electrodes 3 are mounted on the back of the base body 1. Utilizing the elasticity and plasticity of the silicone material, the dry electrodes 3 achieve automatic contraction and adaptation, ensuring a close fit to the scalp under different head shapes, thereby improving the accuracy and stability of EEG signal acquisition.

Claims

1. A base for an EEG amplifier adapted to different head shapes, characterized in that, The device includes a base body, on the back of which a silicone plate and multiple dry electrodes are mounted. Multiple silicone mounting cylinders are raised on the silicone plate, each matching one of the dry electrodes. Each silicone mounting cylinder contains a fixing device for securing the dry electrode. Each fixing device includes a latch located within the silicone mounting cylinder. Two latch springs are horizontally spaced at the top of the latch. The mounting shaft of the dry electrode passes through the top opening of the silicone mounting cylinder and the latch, engaging with the two latch springs.

2. The EEG amplifier base for adapting to different head shapes according to claim 1, characterized in that, The silicone plate is detachably connected to the back of the base body.

3. The EEG amplifier base for adapting to different head shapes according to claim 2, characterized in that, The silicone plate has buckles on both sides, and the base body has slots on both sides of its back that engage with the buckles.

4. The EEG amplifier base for adapting to different head shapes according to claim 1, characterized in that, Each of the silicone mounting cylinders is provided with a spring for supporting the silicone mounting cylinder.

5. The EEG amplifier base for adapting to different head shapes according to claim 4, characterized in that, Each of the dry electrodes includes a mounting plate, the mounting shaft is provided on the lower end face of the mounting plate, and multiple contact pins are provided on the upper end face; the mounting shaft is a cylindrical structure with a smaller middle and a larger head, and the middle part of the mounting shaft and the head end of the mounting shaft are smoothly connected; the outer diameter of the head end of the mounting shaft is larger than the distance between the two locking spring pins.

6. The EEG amplifier base for adapting to different head shapes according to claim 5, characterized in that, The silicone mounting cylinder has a partition with a through hole in the middle, which divides the silicone mounting cylinder into a top mounting area and a bottom mounting area. The latch is located in the top mounting area, with the bottom of the latch contacting the upper surface of the partition and the top opening of the latch flush with the top opening of the silicone mounting cylinder. A conductive post is located in the bottom mounting area, with the bottom opening of the latch passing through the through hole and connecting to the conductive post. The conductive post is connected to the circuit inside the base body. The two ends of the spring contact the back of the base body and the lower end surface of the partition of the silicone mounting cylinder, respectively.

7. The EEG amplifier base for adapting to different head shapes according to claim 6, characterized in that, An elastic pad is provided between the lower end face of the mounting plate and the upper end face of the latch.

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