Head-mounted electroencephalogram acquisition device and information acquisition method thereof

Abstract

The application relates to the technical field of electroencephalogram head ring, and discloses a head-mounted electroencephalogram acquisition device and an information acquisition method thereof, which comprises a ring-shaped base, the bottom of the ring-shaped base is connected with the scalp through medical adhesive, a trigger assembly is arranged at the top of the ring-shaped base, and a locking assembly is arranged at the top of the ring-shaped base. After the paste cup is inserted into the ring-shaped base, the top plate is automatically triggered to be close to the paste cup, the top plate drives the piston block and the wire to push the conductive paste to be close to the scalp through the hollow cylinder, the linkage design replaces the traditional mode of manually pushing the piston block one by one, a large amount of preparation time is saved, the constant pre-tightening force provided by the first spring makes the pushing force of the piston block on the conductive paste consistent, the fluctuation of the manual operation force is avoided, the conductive paste is ensured to be attached to the scalp in a uniform thickness, local gaps caused by insufficient pushing force are avoided, and the paste is not wasted due to overflow caused by excessive pushing force.

Description

Technical Field

[0001] This invention relates to the field of EEG headband technology, specifically to a head-mounted EEG acquisition device and its information acquisition method. Background Technology

[0002] A head-mounted EEG acquisition device is a device used to collect EEG signals from the scalp. During the acquisition process, conductive paste is first injected into the cavity of the cup-shaped electrode, then the electrode is placed upside down in a preset position on the scalp. Finally, by manually pushing the piston at the tail of the electrode, the conductive paste is pressed and tightly adhered to the scalp, forming a stable electrical connection pathway to ensure efficient transmission of EEG signals.

[0003] In the preparation stage of EEG acquisition, the rapid and reliable adhesion of electrodes to the scalp is crucial. However, in existing operations, after the cup-shaped electrodes are placed upside down on the scalp, the pistons must be manually pushed one by one. That is, the operator needs to apply pressure to each electrode to squeeze the conductive paste out of the cavity and adhere it to the scalp. This single-electrode sequential operation mode leads to a significant increase in the overall preparation time in multi-electrode acquisition scenarios. At the same time, it is difficult to unify the force and speed of manual pushing. Some electrodes may not adhere sufficiently to the scalp due to insufficient pushing force (resulting in high impedance), or the paste may overflow due to excessive pushing force, requiring additional time for adjustment and further reducing efficiency. Based on this, the present invention aims to provide a head-mounted EEG acquisition device and its information acquisition method that can achieve automatic adhesion of conductive paste, reduce manual intervention, and improve overall operational efficiency. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a head-mounted EEG acquisition device and its information acquisition method, thereby solving the technical problems in the prior art.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] The head-mounted EEG acquisition device includes:

[0007] A ring-shaped base, the bottom of which is connected to the scalp with medical adhesive, a trigger component and a locking component are provided on the top of the ring-shaped base;

[0008] The ointment cup is slidably inserted into an annular base. The ointment cup is driven to move by a drive source. The open end of the ointment cup faces the scalp and contains conductive ointment. A hollow cylinder is slidably inserted into the middle of the top of the ointment cup. A piston block is fixedly installed on the outer circular surface of the bottom end of the hollow cylinder. The piston block is slidably connected to the inner wall of the ointment cup. A top plate is fixedly installed on the outer circular surface of the top of the hollow cylinder. A wire is fixedly installed inside the hollow cylinder. The bottom end of the wire extends and inserts into the conductive ointment in the ointment cup. The top end of the wire is connected to an external EEG acquisition component. The bottom of the top plate is connected to the top surface of the ointment cup through a first spring. The preload of the first spring causes the top plate to approach the ointment cup.

[0009] A tensioning assembly is disposed on the ointment cup and connected to a top plate and a triggering assembly. When the tensioning assembly is connected to the top plate, it causes the top plate to move away from the ointment cup, and the first spring is in a tensioned state. When the driving source causes the ointment cup to slide completely into the annular base, the triggering assembly causes the tensioning assembly to separate from the top plate, and the preload of the first spring causes the top plate to move closer to the ointment cup.

[0010] As a further aspect of the present invention: the tensioning assembly includes a fixed block, a groove, a trapezoidal block, a second spring, and an L-shaped rod. There are two tensioning assemblies, symmetrically arranged on the ointment cup. Both fixed blocks are fixedly installed on the outer circumference of the ointment cup. The groove is formed on the fixed block. The trapezoidal block is slidably installed in the groove and connected to the bottom of the groove via the second spring. The preload of the second spring causes the trapezoidal block to move away from the groove. The L-shaped rod is slidably installed on the fixed block, with one end extending into the groove and fixedly connected to the trapezoidal block. The L-shaped rod is connected to a triggering assembly. The top surface of the trapezoidal block is slidably connected to the bottom of the top plate. When the trapezoidal block abuts against the bottom of the top plate, the first spring is in a tensioned state. When the ointment cup is fully slidably inserted into the annular base, the triggering assembly drives the L-shaped rod to move, thereby pulling the trapezoidal block to retract into the groove, causing the trapezoidal block to move away from the top plate.

[0011] As a further aspect of the present invention: the triggering component includes a roller, a long plate, and an angled bevel. The roller is rotatably mounted on the end of the L-shaped rod away from the groove. The long plate is fixedly mounted on the top of the annular base. The angled bevel is located on the top of the long plate, and the horizontal height of the end of the angled bevel closer to the axis of the annular base is higher than the horizontal height of the end of the angled bevel away from the axis of the annular base. When the paste cup is slidably inserted into the annular base, the roller is located directly above the angled bevel, and the distance between the roller and the angled bevel decreases. When the roller and the angled bevel are in rolling connection, as the horizontal height of the roller decreases, the distance between the roller and the axis of the annular base increases, thereby driving the L-shaped rod away from the axis of the annular base, causing the L-shaped rod to pull the trapezoidal block to retract into the groove. At this time, the second spring is in a compressed state.

[0012] As a further embodiment of the present invention: the locking assembly includes a locking frame, a locking block, a cavity, a lifting frame, a third spring, an extension plate, and a linkage assembly. There are two locking assemblies, symmetrically arranged on the annular base. Both locking frames are fixedly installed on the top of the annular base. The cavity is formed within the locking frame, and the lifting frame is slidably installed within the cavity. The lifting frame is connected to the bottom of the cavity groove via the third spring. The preload of the third spring causes the top of the lifting frame to protrude beyond the locking frame. The extension plate is fixedly installed on... On the hollow cylinder, when the paste cup is slidably inserted into the annular base, the extension plate is located directly above the lifting frame. The locking block is slidably installed in the cavity and moves along the radial direction of the annular base. The linkage component is set in the cavity. When the trapezoidal block retracts into the groove, the preload of the first spring drives the top plate to approach the paste cup. At this time, the extension plate compresses the lifting frame, causing the lifting frame to retract into the cavity. When the lifting frame moves, it drives the locking block to move through the linkage component, causing one end of the locking block to protrude out of the cavity, while the locking block abuts against the top of the paste cup.

[0013] As a further embodiment of the present invention: the linkage component includes a circular block, a fixed plate, a straight groove and an inclined groove. The circular block is fixedly installed on the locking block, the fixed plate is fixedly installed in the cavity, the straight groove is opened on the fixed plate, the inclined groove is opened on the lifting frame, and the inclined groove and the straight groove form an angle. The horizontal height of the end of the inclined groove near the axis of the annular base is higher than the horizontal height of the end of the inclined groove away from the axis of the annular base. The circular block is slidably connected to the inclined groove and the straight groove.

[0014] As a further embodiment of the present invention: the inner wall of the annular base is provided with four circumferentially arranged guide grooves, and the outer surface of the paste cup is fixedly installed with four circumferentially arranged guide protrusions, the guide protrusions being slidably connected to the guide grooves.

[0015] As a further embodiment of the present invention: a T-shaped rod is fixedly installed on the top of the paste cup, a reserved hole is provided on the top plate, the T-shaped rod is slidably connected to the reserved hole, and the diameter of the top end of the T-shaped rod is larger than the diameter of the reserved hole.

[0016] A method for acquiring information using a head-mounted EEG acquisition device, the method being applied to the head-mounted EEG acquisition device as described above, the method comprising the following steps:

[0017] Step S1: First, separate the hair slits, then clean the scalp, and then apply medical adhesive to the bottom of the ring base and stick it directly to the cleaned scalp;

[0018] Step S2: Next, inject an appropriate amount of conductive paste into the paste cup so that the conductive paste wraps the wire;

[0019] Step S3: Then, the paste cup is inverted and slid into the annular base. When the paste cup is fully slid into the annular base, the trigger component causes the tensioning component to separate from the top plate, and the first spring preload causes the top plate to approach the paste cup.

[0020] Step S4: The top plate will cause the hollow cylinder to slide on the cream cup, so that the piston block and the wire move towards the scalp synchronously;

[0021] Step S5: The piston block will push the conductive paste, allowing it to adhere tightly to the scalp, after which EEG information can be collected.

[0022] The beneficial effects of this invention are:

[0023] 1. In this invention, after the cream cup is inserted into the annular base, the top plate is automatically triggered to approach the cream cup. The top plate, through the hollow cylinder, drives the piston block and the wire to push the conductive cream tightly against the scalp. This linkage design replaces the traditional mode of manually pushing the piston block one by one, thereby saving a lot of preparation time. At the same time, the constant pre-tightening force provided by the first spring ensures that the pushing force of the piston block on the conductive cream is consistent, avoiding the force fluctuation of manual operation, and ensuring that the conductive cream adheres to the scalp with a uniform thickness. It will not cause local gaps due to insufficient pushing force, nor will it cause cream overflow and waste due to excessive pushing force.

[0024] 2. In this invention, when the ointment cup is inserted into the annular base along a preset trajectory, the trapezoidal block retracts synchronously into the groove as the insertion action proceeds until the ointment cup is fully inserted into the annular base and the structure is locked. At this point, the trapezoidal block is fully retracted into the groove, and the limiting effect of the trapezoidal block on the top plate is released. The pre-tightening force stored in the first spring is released, driving the top plate to move towards the ointment cup. This, in turn, causes the hollow cylinder and the piston block to slide synchronously within the ointment cup, ultimately pushing the conductive ointment towards the scalp. At this point, the cooperation between the trapezoidal block and the groove can prevent the release of the force of the first spring when the ointment cup is not fully inserted, thus avoiding adhesion failure caused by premature compression of the conductive ointment.

[0025] 3. In this invention, when the paste cup is fully inserted into the annular base, while the piston block pushes the conductive paste, the extension plate presses the lifting frame into the cavity and compresses the third spring. At this time, the locking block extends out from the cavity, and the bottom end of the locking block abuts against the top of the paste cup. At this time, the annular base, the locking frame and the locking block form an L-shaped structure, locking the paste cup in the annular base, ensuring stable connection during collection and ensuring reliable transmission of EEG signals. Attached Figure Description

[0026] The invention will now be further described with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2This is a schematic diagram of the structure at the bottom of the annular base in this invention;

[0029] Figure 3 This is a schematic diagram of the structure in which the trapezoidal block abuts against the top plate in this invention;

[0030] Figure 4 This is a cross-sectional structural schematic diagram of the fixing block in this invention;

[0031] Figure 5 In this invention Figure 4 Enlarged structural diagram of section A;

[0032] Figure 6 This is a cross-sectional structural schematic diagram of the locking frame in this invention;

[0033] Figure 7 This is a schematic diagram of the locking frame in this invention;

[0034] Figure 8 This is a schematic diagram of the lifting frame when it rises in this invention;

[0035] Figure 9 This is a schematic diagram of the lifting frame descending in this invention.

[0036] In the diagram: 1. Annular base; 2. Paste cup; 3. Piston block; 4. Hollow cylinder; 5. Top plate; 6. Wire; 7. First spring; 8. Fixing block; 9. Groove; 10. Trapezoidal block; 11. Second spring; 12. L-shaped rod; 13. Roller; 14. Long plate; 15. Angled angle; 16. Locking frame; 17. Locking block; 18. Cavity; 19. Round block; 20. Fixing plate; 21. Straight groove; 22. Lifting frame; 23. Angled groove; 24. Third spring; 25. Extension plate; 26. Guide groove; 27. Guide protrusion; 28. Rough surface; 29. ​​T-shaped rod; 30. Connecting ear. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1-9 As shown, the present invention is a head-mounted EEG acquisition device, comprising:

[0039] The annular base 1 has its bottom connected to the scalp with medical adhesive, and its top is provided with a triggering component and a locking component.

[0040] A paste cup 2 is slidably inserted into an annular base 1. The paste cup 2 is driven to move by a drive source. The open end of the paste cup 2 faces the scalp, and the paste cup 2 contains conductive paste. A hollow cylinder 4 is slidably inserted into the middle of the top of the paste cup 2. A piston block 3 is fixedly installed on the outer circular surface of the bottom end of the hollow cylinder 4. The piston block 3 is slidably connected to the inner wall of the paste cup 2. A top plate 5 is fixedly installed on the outer circular surface of the top of the hollow cylinder 4. A wire 6 is fixedly installed inside the hollow cylinder 4. The bottom end of the wire 6 extends and inserts into the conductive paste in the paste cup 2. The top end of the wire 6 is connected to an external EEG acquisition component. The bottom of the top plate 5 is connected to the top surface of the paste cup 2 through a first spring 7. The preload of the first spring 7 causes the top plate 5 to approach the paste cup 2.

[0041] A tensioning assembly is disposed on the ointment cup 2. The tensioning assembly is connected to the top plate 5 and the triggering assembly. When the tensioning assembly is connected to the top plate 5, the tensioning assembly causes the top plate 5 to move away from the ointment cup 2. At this time, the first spring 7 is in a tensioned state. When the driving source causes the ointment cup 2 to slide completely into the annular base 1, the triggering assembly causes the tensioning assembly to separate from the top plate 5, and the preload of the first spring 7 causes the top plate 5 to move closer to the ointment cup 2.

[0042] The bottom of the annular base 1 is roughened to a rough surface 28. There are multiple annular bases 1. Four circumferentially arranged connecting ears 30 are fixedly installed on the outer circular surface of the annular base 1. The connecting ears 30 are connected to other connecting ears 30 by connecting straps.

[0043] In one embodiment of this invention, it should be noted that the external EEG acquisition component of this invention includes acquisition electrodes, signal conditioning module, transmission interface module, power supply component, etc. All of the above components are existing technologies, and this invention does not improve them. Therefore, it is not necessary to disclose their specific mechanical and circuit structures, which does not affect the integrity of this invention. The driving source can be manually driven or other mechanisms that can achieve linear reciprocating motion. This embodiment does not impose specific limitations on these components.

[0044] The working principle of this invention is as follows: First, the scalp is separated, then the scalp is cleaned. Next, medical adhesive is applied to the bottom of the annular base 1 and directly adhered to the cleaned scalp. The roughened surface 28 increases the contact area between the medical adhesive and the annular base 1, thereby improving adhesion stability. Then, an appropriate amount of conductive paste is injected into the paste cup 2, allowing the conductive paste to wrap around the wire 6. The paste cup 2 is then manually inverted and slid into the annular base 1. When the paste cup 2 is fully inserted into the annular base 1, the trigger component separates the tensioning component from the top plate 5. At this point, as... Figure 4As shown in the example, when the preload of the first spring 7 causes the top plate 5 to approach the ointment cup 2, the top plate 5 will drive the hollow cylinder 4 to slide on the ointment cup 2, causing the piston block 3 and the wire 6 to move towards the scalp simultaneously. The piston block 3 will push the conductive ointment down, allowing the conductive ointment to adhere tightly to the scalp. Due to the descent of the piston block 3, the space between the scalp and the ointment cup 2 becomes smaller. Therefore, the appropriate amount of conductive ointment originally filled in the ointment cup 2 will fill the remaining space in the ointment cup 2. While the conductive ointment is adhering tightly to the scalp, it can tightly wrap the wire 6, allowing the wire 6 to establish a stable connection with the scalp through the conductive ointment, which is beneficial for the collection of EEG information. It should be noted that the wire 6 does not directly contact the scalp, but is at a certain distance from the scalp. The first spring 7 can provide a stable thrust for the piston block 3 and can automatically trigger the piston block 3 after the ointment cup 2 is fully inserted into the annular base 1, thus shortening the overall preparation time.

[0045] like Figures 1-6 As shown in the preferred embodiment of the present invention, the tensioning assembly includes a fixing block 8, a groove 9, a trapezoidal block 10, a second spring 11, and an L-shaped rod 12. There are two tensioning assemblies, symmetrically arranged on the paste cup 2. Both fixing blocks 8 are fixedly installed on the outer surface of the paste cup 2. The groove 9 is formed on the fixing block 8. The trapezoidal block 10 is slidably installed in the groove 9, and is connected to the bottom of the groove 9 via the second spring 11. The preload of the second spring 11 causes the trapezoidal block 10 to move away from the groove. The L-shaped rod 12 is slidably mounted on the fixed block 8 in the groove 9, with one end of the L-shaped rod 12 extending into the groove 9 and fixedly connected to the trapezoidal block 10. The L-shaped rod 12 is connected to the trigger assembly. The top surface of the trapezoidal block 10 is slidably connected to the bottom of the top plate 5. When the trapezoidal block 10 abuts against the bottom of the top plate 5, the first spring 7 is in a taut state. When the paste cup 2 is fully slidably inserted into the annular base 1, the trigger assembly drives the L-shaped rod 12 to move, thereby pulling the trapezoidal block 10 to retract into the groove 9, so that the trapezoidal block 10 moves away from the top plate 5.

[0046] The triggering assembly includes a roller 13, a long plate 14, and an angled corner 15. The roller 13 is rotatably mounted on the end of the L-shaped rod 12 away from the groove 9. The long plate 14 is fixedly mounted on the top of the annular base 1. The angled corner 15 is located on the top of the long plate 14, and the horizontal height of the end of the angled corner 15 near the axis of the annular base 1 is higher than the horizontal height of the end of the angled corner 15 away from the axis of the annular base 1. When the paste cup 2 is slidably inserted into the annular base 1, the roller 13 is located directly above the angled corner 15, and the distance between the roller 13 and the angled corner 15 decreases. When the roller 13 and the angled corner 15 are in rolling connection, as the horizontal height of the roller 13 decreases, the distance between the roller 13 and the axis of the annular base 1 increases, thereby driving the L-shaped rod 12 away from the axis of the annular base 1, so that the L-shaped rod 12 pulls the trapezoidal block 10 to retract into the groove 9. At this time, the second spring 11 is in a compressed state.

[0047] In practical applications, this embodiment, such as Figure 3 Taking the example shown, at this time, under the action of the second spring 11, one end of the trapezoidal block 10 protrudes from the fixing block 8, and the trapezoidal block 10 abuts against the top plate 5, keeping the first spring 7 in a taut state. In this case, the paste cup 2 has been partially inserted into the annular base 1, and the roller 13 has not yet contacted the angle 15. As the paste cup 2 continues to be inserted, the roller 13 will roll into contact with the angle 15, and the roller 13 will roll away from the axis of the paste cup 2 on the angle 15. The movement of the roller 13 will drive the L-shaped rod 12 to move synchronously, causing the L-shaped rod 12 to pull the trapezoidal block 10, compressing the second spring 11. Then the trapezoidal block 10 will gradually shrink into the groove 9. This is a case where the paste cup 2 is inserted into the annular base 1 and the trapezoidal block 10 is inserted into the groove 9. The process of the 0 retracting into the groove 9 continues until the paste cup 2 is fully inserted into the annular base 1. At the same time, the trapezoidal block 10 is also fully retracted into the groove 9. Then, without the constraint of the trapezoidal block 10, the pre-tightening force of the first spring 7 will drive the top plate 5 closer to the paste cup 2, thereby triggering the automatic pushing step of the conductive paste. In this way, the conductive paste in the paste cup 2 is automatically pressed tightly against the scalp after the paste cup 2 is inserted into the annular base 1. This avoids the problem of manual pushing of the conductive paste in traditional cup-shaped electrodes, which leads to excessive preparation time and unstable pushing force. In addition, the cooperation between the trapezoidal block 10 and the groove 9 can prevent the force of the first spring 7 from being released when the paste cup 2 is not fully inserted, thus avoiding the failure of adhesion caused by premature compression of the conductive paste.

[0048] It should be noted that in order to avoid the problem of the first spring 7 gradually reducing thrust due to metal fatigue, the first spring 7 needs to be inspected regularly. If the thrust becomes unstable, the first spring 7 can be replaced to maintain stable thrust.

[0049] like Figures 1-9As shown, in a preferred embodiment of the present invention, the locking assembly includes a locking frame 16, a locking block 17, a cavity 18, a lifting frame 22, a third spring 24, an extension plate 25, and a linkage assembly. There are two locking assemblies, symmetrically arranged on the annular base 1. Both locking frames 16 are fixedly installed on the top of the annular base 1. The cavity 18 is formed within the locking frame 16. The lifting frame 22 is slidably installed within the cavity 18, and is connected to the bottom of the cavity 18 via the third spring 24. The preload of the third spring 24 causes the top of the lifting frame 22 to protrude from the locking frame 16. The extension plate 25 is fixedly installed on... On the hollow cylinder 4, when the paste cup 2 slides into the annular base 1, the extension plate 25 is located directly above the lifting frame 22. The locking block 17 is slidably installed in the cavity 18. The locking block 17 moves along the radial direction of the annular base 1. The linkage component is set in the cavity 18. When the trapezoidal block 10 retracts into the groove 9, the preload of the first spring 7 drives the top plate 5 to approach the paste cup 2. At this time, the extension plate 25 compresses the lifting frame 22, causing the lifting frame 22 to retract into the cavity 18. When the lifting frame 22 moves, it drives the locking block 17 to move through the linkage component, causing one end of the locking block 17 to protrude out of the cavity 18. At the same time, the locking block 17 abuts against the top of the paste cup 2.

[0050] The linkage component includes a circular block 19, a fixing plate 20, a straight groove 21, and an inclined groove 23. The circular block 19 is fixedly installed on the locking block 17, the fixing plate 20 is fixedly installed in the cavity 18, the straight groove 21 is opened on the fixing plate 20, and the inclined groove 23 is opened on the lifting frame 22, with the inclined groove 23 forming an angle with the straight groove 21. The horizontal height of the end of the inclined groove 23 near the axis of the annular base 1 is higher than the horizontal height of the end of the inclined groove 23 away from the axis of the annular base 1. The circular block 19 is slidably connected to the inclined groove 23, and the circular block 19 is slidably connected to the straight groove 21.

[0051] In practical application, when the paste cup 2 is inserted into the annular base 1, the extension plate 25 is positioned above the lifting frame 22. After the paste cup 2 is fully inserted into the annular base 1, the height of the top of the paste cup 2 is determined. The top plate 5, under the action of the first spring 7, approaches the paste cup 2, thus automatically pushing the conductive paste. Simultaneously, the top plate 5 drives the extension plate 25 to press the lifting frame 22 into the cavity 18. At this time, the lifting frame 22 compresses the third spring 24. Figure 8 and Figure 9As shown in the example, when the lifting frame 22 descends, the inclined groove 23 will drive the circular block 19 to move. Under the guidance of the straight groove 21, the circular block 19 will move towards the axis of the annular base 1, thus causing the locking block 17 to extend out of the cavity 18. The bottom end of the locking block 17 will then abut against the top of the paste cup 2, locking the paste cup 2 onto the annular base 1. Therefore, the annular base 1, the locking frame 16, and the locking block 17 form an L-shape, thus securing the paste cup 2 inside the annular base 1. This ensures the stability of the paste cup 2 connection during EEG information acquisition, which is beneficial for EEG information acquisition. When removing the paste cup 2 from the annular base 1, simply move the top plate 5 away from the paste cup 2. The extension plate 25 will then move away from the lifting frame 22, and the preload of the third spring 24 will cause the lifting frame 22 to rise, thereby retracting the locking block 17 back into the cavity 18, thus releasing the locking of the paste cup 2.

[0052] like Figures 1-6 As shown, in a preferred embodiment of the present invention, the inner wall of the annular base 1 is provided with four circumferentially arranged guide grooves 26, and the outer surface of the paste cup 2 is fixedly installed with four circumferentially arranged guide protrusions 27, and the guide protrusions 27 are slidably connected to the guide grooves 26.

[0053] In practical application, this embodiment ensures that the guide convex strip 27 and guide groove 26 slide together, preventing the paste cup 2 from deflecting when inserted into the annular base 1. The piston block 3 can push the conductive paste in a straight line, ensuring that the conductive paste is stably applied to the scalp. At the same time, it avoids the offset of the roller 13 and the angle 15, the extension plate 25 and the lifting frame 22, ensuring the smooth automatic pushing of the conductive paste and automatic locking of the paste cup 2.

[0054] like Figures 1-6 As shown, in a preferred embodiment of the present invention, a T-shaped rod 29 is fixedly installed on the top of the paste cup 2, and a reserved hole is provided on the top plate 5. The T-shaped rod 29 is slidably connected to the reserved hole, and the diameter of the top end of the T-shaped rod 29 is larger than the diameter of the reserved hole.

[0055] In practical application, the T-shaped rod 29 is provided to facilitate the removal of the ointment cup 2 from the annular base 1. When the ointment cup 2 is fully slid into the annular base 1, the two locking blocks 17 abut against the top of the ointment cup 2, which restricts the ointment cup 2 from being pulled out of the annular base 1. Therefore, during removal, one hand first holds down the T-shaped rod 29, thus holding down the ointment cup 2. Then, the other hand pulls the top plate 5 upwards, moving it above the groove 9. At this point, the first spring 7 will tighten again, and the top plate 5 will approach the T-shaped rod 29. Then, one thumb can be used to press down on the T-shaped rod 29, while both thumbs grip the two extension plates 25 from below, similar to the posture of giving a syringe. The free hand presses down on the ointment cup 2 to prevent the ointment from leaking out. Cup 2 automatically moves out of the annular base 1 under the action of the first spring 7. Then, the extension plate 25 moves away from the lifting frame 22 as the top plate 5 moves upward. The lifting frame 22 will then reset under the preload of the third spring 24. The locking block 17 will then retract into the cavity 18. At this time, both hands simultaneously move the T-shaped rod 29, the top plate 5, and the paste cup 2 upward. As the paste cup 2 gradually moves out of the annular base 1, the roller 13 will move away from the long plate 14 and the angle 15. Under the preload of the second spring 11, the trapezoidal block 10 will reset and move to below the top plate 5. At this time, the extension plate 25 is released, allowing the top plate 5 to be repositioned by the trapezoidal block 10. This not only allows the paste cup 2 to be easily removed from the annular base 1, but also directly resets it to the state of being inserted between the annular base 1.

[0056] Please see Figures 1-9 As shown, the present invention is an information acquisition method for a head-mounted EEG acquisition device. The method is applied to the head-mounted EEG acquisition device as described in the above embodiments, and the method includes the following steps:

[0057] Step S1: First, separate the hair slits, then clean the scalp, and then apply medical adhesive to the bottom of the ring base 1 and stick it directly to the cleaned scalp;

[0058] Step S2: Next, inject an appropriate amount of conductive paste into the paste cup 2 so that the conductive paste wraps around the wire 6;

[0059] Step S3: Then, the paste cup 2 is inverted and slid into the annular base 1. When the paste cup 2 is fully slid into the annular base 1, the trigger component causes the tensioning component to separate from the top plate 5, and the pre-tension force of the first spring 7 causes the top plate 5 to approach the paste cup 2.

[0060] Step S4: The top plate 5 will drive the hollow cylinder 4 to slide on the ointment cup 2, so that the piston block 3 and the wire 6 move towards the scalp synchronously;

[0061] Step S5: Piston block 3 will push the conductive paste to adhere tightly to the scalp, after which EEG information can be collected.

[0062] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A head-mounted electroencephalography acquisition device, characterized in that, The utility model relates to a kind of electroencephalogram electrode, including: Annular base (1), the bottom of the annular base (1) is connected with scalp by medical adhesive, the top of the annular base (1) is provided with trigger component, and the top of the annular base (1) is provided with locking component; Paste cup (2), the paste cup (2) is slidably inserted in annular base (1), the paste cup (2) is driven to move by drive source, the open end of the paste cup (2) is towards scalp, and the paste cup (2) stores conductive paste, the top end of the paste cup (2) is slidably inserted in hollow cylinder (4), the outer circular surface of the bottom end of the hollow cylinder (4) is fixedly installed with piston block (3), the piston block (3) is slidably connected with the inner wall of the paste cup (2), the outer circular surface of the top end of the hollow cylinder (4) is fixedly installed with top plate (5), the inside of the hollow cylinder (4) is fixedly installed with wire (6), the bottom end of the wire (6) extends and is inserted into conductive paste in the paste cup (2), the top end of the wire (6) is connected with external electroencephalogram acquisition component, the bottom of the top plate (5) is connected with the top surface of the paste cup (2) by first spring (7), the pre-tightening force of the first spring (7) makes the top plate (5) close to the paste cup (2); Tightening component, the tightening component is arranged on the paste cup (2), the tightening component is connected with the top plate (5), the tightening component is connected with trigger component, when the tightening component is connected with the top plate (5), the tightening component makes the top plate (5) away from the paste cup (2), at this time, the first spring (7) is in the state of being taut, when the drive source makes the paste cup (2) completely slidably inserted in annular base (1), trigger component makes the tightening component separate from the top plate (5), and the pre-tightening force of the first spring (7) makes the top plate (5) close to the paste cup (2).

2. The head-mounted electroencephalography acquisition device of claim 1, wherein, The tightening component includes fixed block (8), groove (9), trapezoidal block (10), second spring (11) and L-shaped rod (12), the number of the tightening component is two, and the two tightening components are symmetrically arranged on the paste cup (2), the outer circular surface of the paste cup (2) is fixedly installed with two fixed blocks (8), the groove (9) is formed in the fixed block (8), the trapezoidal block (10) is slidably installed in the groove (9), and the trapezoidal block (10) is connected with the groove (9) groove bottom by the second spring (11), the pre-tightening force of the second spring (11) makes the trapezoidal block (10) away from the groove (9), the L-shaped rod (12) is slidably installed on the fixed block (8), and one end of the L-shaped rod (12) extends into the groove (9), and the end is fixedly connected with the trapezoidal block (10), the L-shaped rod (12) is connected with trigger component, the top surface of the trapezoidal block (10) is slidably connected with the bottom of the top plate (5), when the trapezoidal block (10) abuts the bottom of the top plate (5), at this time, the first spring (7) is in the state of being taut, when the paste cup (2) is completely slidably inserted in annular base (1), trigger component drives the L-shaped rod (12) to move, so as to pull the trapezoidal block (10) to shrink into the groove (9), so that the trapezoidal block (10) is away from the top plate (5).

3. The head-mounted electroencephalography acquisition device of claim 2, wherein, The trigger assembly comprises a roller (13), a long plate (14) and an inclined angle (15), the roller (13) is rotatably arranged at one end of the L-shaped rod (12) away from the groove (9), the long plate (14) is fixedly arranged on the top of the annular base (1), the inclined angle (15) is arranged on the top of the long plate (14), and the horizontal height of the end of the inclined angle (15) close to the axis of the annular base (1) is higher than the horizontal height of the end of the inclined angle (15) away from the axis of the annular base (1), when the paste cup (2) is slidingly inserted into the annular base (1), the roller (13) is located directly above the inclined angle (15), and the distance between the roller (13) and the inclined angle (15) decreases, when the roller (13) is in rolling connection with the inclined angle (15), with the decrease of the horizontal height of the roller (13), the distance between the roller (13) and the axis of the annular base (1) increases, so that the L-shaped rod (12) is away from the axis of the annular base (1), and the L-shaped rod (12) drives the trapezoidal block (10) to shrink into the groove (9), at this time, the second spring (11) is in a compressed state.

4. The head-mounted electroencephalography acquisition device of claim 3, wherein, The locking assembly comprises a locking frame (16), a locking block (17), a cavity (18), a lifting frame (22), a third spring (24), an extension plate (25) and a linkage assembly, the number of the locking assembly is two, the two locking assemblies are symmetrically arranged on the annular base (1), the two locking frames (16) are fixedly arranged on the top of the annular base (1), the cavity (18) is arranged in the locking frame (16), the lifting frame (22) is slidingly arranged in the cavity (18), and the lifting frame (22) is connected with the bottom of the cavity (18) through the third spring (24), the pre-tightening force of the third spring (24) makes the top end of the lifting frame (22) protrude from the locking frame (16), the extension plate (25) is fixedly arranged on the hollow cylinder (4), when the paste cup (2) is slidingly inserted into the annular base (1), the extension plate (25) is located directly above the lifting frame (22), the locking block (17) is slidingly arranged in the cavity (18), the locking block (17) moves along the radial direction of the annular base (1), and the linkage assembly is arranged in the cavity (18), when the trapezoidal block (10) shrinks into the groove (9), the pre-tightening force of the first spring (7) drives the top plate (5) to be close to the paste cup (2), at this time, the extension plate (25) compresses the lifting frame (22), so that the lifting frame (22) shrinks into the cavity (18), when the lifting frame (22) moves, the locking block (17) is driven to move through the linkage assembly, so that one end of the locking block (17) protrudes from the cavity (18), and the locking block (17) abuts against the top of the paste cup (2).

5. The head-mounted electroencephalography acquisition device of claim 4, wherein, The linkage assembly comprises a round block (19), a fixed plate (20), a straight slot (21) and an inclined slot (23), the round block (19) is fixedly installed on the locking block (17), the fixed plate (20) is fixedly installed in the cavity (18), the straight slot (21) is arranged on the fixed plate (20), the inclined slot (23) is arranged on the lifting frame (22), and the inclined slot (23) and the straight slot (21) form an included angle, the horizontal height of the end of the inclined slot (23) close to the axis of the annular base (1) is higher than the horizontal height of the end of the inclined slot (23) away from the axis of the annular base (1), the round block (19) is slidably connected with the inclined slot (23), and the round block (19) is slidably connected with the straight slot (21).

6. The head-mounted electroencephalography acquisition device of claim 1, wherein, Four circumferentially-arranged guide grooves (26) are arranged on the inner wall of the annular base (1), four circumferentially-arranged guide protrusions (27) are fixedly installed on the outer circumferential surface of the paste cup (2), and the guide protrusions (27) are slidably connected with the guide grooves (26).

7. The head-mounted electroencephalography acquisition device of claim 5, wherein, A T-shaped rod (29) is fixedly installed on the top of the paste cup (2), a reserved hole is arranged on the top plate (5), the T-shaped rod (29) is slidably connected with the reserved hole, and the diameter of the top end of the T-shaped rod (29) is greater than the diameter of the reserved hole.

8. An information acquisition method of a head-mounted electroencephalography acquisition device, characterized by, The method is applied to the head-mounted electroencephalogram acquisition device as claimed in any one of claims 1-7, and the method comprises the following steps: Step S1: first, the hairline is divided, then the scalp is cleaned, and then medical adhesive is applied on the bottom of the annular base (1) and directly pasted on the cleaned scalp; Step S2: then, a proper amount of conductive paste is injected into the paste cup (2), so that the conductive paste wraps the lead wire (6); Step S3: then, the paste cup (2) is inverted and slidably inserted into the annular base (1), when the paste cup (2) is completely slidably inserted into the annular base (1), the trigger assembly makes the tightening assembly separate from the top plate (5), and the pre-tightening force of the first spring (7) makes the top plate (5) close to the paste cup (2); Step S4: the top plate (5) drives the hollow cylinder (4) to slide on the paste cup (2), so that the piston block (3) and the lead wire (6) move synchronously towards the scalp; Step S5: the piston block (3) pushes the conductive paste to tightly adhere to the scalp, and then the electroencephalogram information acquisition can be performed.

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