Neural electrophysiological signal acquisition device and acquisition method thereof

Abstract

The invention discloses a nerve electrophysiological signal acquisition device and an acquisition method thereof, and relates to the technical field of physiological signal acquisition, the nerve electrophysiological signal acquisition device comprises an acquisition box seat, the bottom of the acquisition box seat is provided with a constraint arc seat, the inner side of the constraint arc seat is provided with an acquisition arc frame, and the inner side of the acquisition arc frame is provided with an acquisition electrode plate; an arc-shaped cavity is formed in the center of the interior of the collecting arc frame, and the increment auxiliary electrode plate is installed at the telescopic end of the round telescopic rod. The range enlarging assembly is arranged on the inner side of the arc-shaped cavity, the round telescopic rod drives the increment auxiliary electrode plate to move out of the arc-shaped cavity during signal collection, the signal collection coverage area is remarkably enlarged through cooperative work of the increment auxiliary electrode plate and the main collection electrode plate, more and more comprehensive physiological signals can be captured, and the signal collection accuracy is improved. Data errors caused by incomplete signal acquisition are reduced, the intensity and stability of the acquired signals are further improved, and the accuracy and reliability of data are further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of physiological signal acquisition, and in particular to a neuroelectrophysiological signal acquisition device and an acquisition method thereof. Background Art

[0002] The neuroelectrophysiological signal acquisition device is used to directly contact neurons or neural tissues and convert electrical signals into measurable voltage or current signals. The neuroelectrophysiological signal acquisition device can capture and analyze the electrical signals generated by neurons during their activities through precise electrodes and signal processing technology. These signals are of great significance for understanding the functions of the nervous system, disease mechanisms, and the development of new treatments. They are widely used in technical fields such as neuroscience, biomedical engineering, and drug research and development.

[0003] The defects of the physiological signal acquisition device in the prior art are:

[0004] 1. Patent document US8538511B2 discloses a device for collecting physiological signals. The signal collection range of the device is small and it is unable to capture more and more comprehensive physiological signals. Data errors may occur due to incomplete signal collection and the accuracy and reliability of the data cannot be guaranteed.

[0005] 2. Patent document CN206534635U discloses a neuroelectrophysiological signal acquisition system. The acquisition system cannot clean the skin at the physiological acquisition position before collecting physiological signals. Grease and dirt will interfere with the acquisition electrodes, and the contact quality between the electrodes and the skin is poor. The increased impedance between the electrodes and the skin will lead to reduced signal transmission quality.

[0006] 3. Patent document CN114869305A discloses a device for monitoring neuroelectrophysiological signals. The device cannot provide all-round anti-vibration protection for the neuroelectrophysiological signal acquisition chip. The neuroelectrophysiological signal acquisition chip is offset in the device and the good performance of the neuroelectrophysiological signal monitoring device cannot be guaranteed.

[0007] 4. Patent document CN110141212B discloses a neuroelectrophysiological signal acquisition device, which cannot protect the neuroelectrophysiological signal acquisition chip from interference from power frequency and noise, and cannot isolate or weaken power frequency interference and other noise sources from the outside world. It is easy to cause signal fluctuations and noise due to external interference, which is not conducive to improving the purity and signal-to-noise ratio of the collected signal. Summary of the invention

[0008] The purpose of the present invention is to provide a neuro-electrophysiological signal acquisition device and an acquisition method thereof to solve the problems raised in the above-mentioned background technology.

[0009] To achieve the above object, the present invention provides the following technical solution: a neuroelectrophysiological signal acquisition device, comprising an acquisition box seat, a main box body and a constraint arc seat, wherein the main box body is installed on the top of the acquisition box seat, the constraint arc seat is installed on the bottom of the acquisition box seat, and a collection arc frame is installed on the inner side of the constraint arc seat;

[0010] A collection electrode sheet is installed on the inner side of the collection arc frame, an arc cavity is opened at the inner center position of the collection arc frame, a range enlargement component is arranged on the inner side of the arc cavity, and the range enlargement component includes an inner vertical plate, a circular telescopic rod and an incremental auxiliary electrode sheet, the inner vertical plate is symmetrically installed on the inner side of the arc cavity, the circular telescopic rod is installed on the outer side of the inner vertical plate, the incremental auxiliary electrode sheet is installed on the telescopic end of the circular telescopic rod, and the outer end of the incremental auxiliary electrode sheet slides on the inner side of the arc cavity.

[0011] Preferably, a clean flow channel is opened inside the collecting arc frame, and the clean flow channel is located at the outer end of the arc cavity, a guide top port is opened on the bottom wall of the arc cavity, and the guide top port is connected to the clean flow channel, and a clean air port is opened on the inner side of the collecting electrode sheet, and the clean air port is connected to the clean flow channel.

[0012] Preferably, a gas injection channel is provided on the outer side of the constraint arc seat, and the output end of the gas injection channel is connected to the top center position of the arc cavity, and a sealing pipe is installed on the outer side of the gas injection channel.

[0013] Preferably, a central groove is provided on the bottom wall of the collection box seat, a neuroelectrophysiological signal collection chip is embedded and installed on the inner side of the central groove, an adaptive adjustment groove is symmetrically provided on the bottom wall of the collection box seat, a horizontal slide is movably installed on the inner side of the adaptive adjustment groove, an inner drive groove is provided on one side inner wall of the adaptive adjustment groove, a docking telescopic rod is installed on the inner side of the inner drive groove, and the telescopic end of the docking telescopic rod is connected to the outer end of the horizontal slide.

[0014] Preferably, a movable shockproof frame is installed on the top of the horizontal slide seat, an anti-seismic compression groove is opened on the opposite side of the movable shockproof frame, a damper is installed on the inner side of the anti-seismic compression groove, a horizontal spring is installed on the outer side of the damper, the outer end of the horizontal spring is connected to an anti-seismic shaking plate, and the outer end of the anti-seismic shaking plate slides on the inner wall of the anti-seismic compression groove, and an anti-scratch touch pad is installed on the opposite side of the anti-seismic shaking plate.

[0015] Preferably, an interference shielding plate is installed on the top of the movable shockproof frame, a bullet-proof pad is installed on the bottom of the interference shielding plate, a sealing plug-in groove is opened on the outer end of one group of interference shielding plates, and a limiting plug-in strip is installed on the outer end of another group of interference shielding plates, and the limiting plug-in strip cooperates with the sealing plug-in groove.

[0016] Preferably, a working status display screen is provided on the front of the main box body, a control button is provided on the front of the main box body, a fitting cover plate is installed on the top of the main box body, a top slot is opened on the top of the fitting cover plate, a convenient lifting rod is installed on the inner side of the top slot through a rotating shaft, a fixed seat is symmetrically installed on the outer end of the main box body, a limiting sleeve roller is installed on the inner side of the fixed seat, a limiting headband is connected to the outer side of the limiting sleeve roller, a female buckle is installed on the outer end of one group of limiting headbands, a male buckle is installed on the outer end of the other group of limiting headbands, and the male buckle cooperates with the female buckle.

[0017] Preferably, the neuro-electrophysiological signal acquisition chip is electrically connected to an acquisition control system, the acquisition control system consists of a shielding-in-place module and a signal acquisition module, the shielding-in-place module is electrically connected to the docking telescopic rod, the signal acquisition module is electrically connected to the acquisition electrode sheet, the range enlargement component and the neuro-electrophysiological signal acquisition chip, and the signal acquisition module is electrically connected to an external air supply device.

[0018] A collection method of a neuroelectrophysiological signal collection device is applicable to a neuroelectrophysiological signal collection device. Preferably, the collection method of the collection device comprises the following steps:

[0019] Step S1, after the neural electrophysiological signal acquisition chip is installed in the main box, the docking telescopic rod drives the horizontal slide seat to dock the two sets of interference shielding plates;

[0020] Step S2, the collection device is worn through a limiting headband, and the circular telescopic rod drives the incremental auxiliary electrode sheet to move out of the arc cavity;

[0021] Step S3: When the main box shakes during the head signal collection process, the outer end of the neuro-electrophysiological signal collection chip collides with the anti-vibration shaking plate, and the damper and the horizontal spring buffer the collision vibration.

[0022] Preferably, in step S2, the following steps are also included:

[0023] Step S21, alcohol gas is introduced from the gas injection channel and discharged from the cleaning gas port through the cleaning flow channel to clean the head skin;

[0024] Step S22: After the head skin is cleaned and dried, the collection electrode sheet and the incremental auxiliary electrode sheet work to collect the head nerve electrical signals and transmit them to the nerve electrophysiological signal collection chip.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention provides a range enlargement component on the inner side of the arc cavity. During signal acquisition, the circular telescopic rod drives the incremental auxiliary electrode sheet to move out of the arc cavity. The incremental auxiliary electrode sheet works together with the main acquisition electrode sheet to significantly expand the coverage area of ​​signal acquisition, which helps to capture more and more comprehensive physiological signals, reduce data errors caused by incomplete signal acquisition, further improve the strength and stability of the collected signals, and thus improve the accuracy and reliability of the data. The circular telescopic rod drives the incremental auxiliary electrode sheet to adjust the position of the electrode sheet according to actual needs to adapt to different head physiological structures and acquisition requirements, thereby reducing the direct contact area between the electrode sheet and the skin, thereby reducing the adverse effects of skin interference on signal acquisition.

[0027] 2. The present invention opens a cleaning flow channel inside the collection arc frame, and alcohol gas is introduced from the gas injection channel and discharged from the cleaning gas port through the cleaning flow channel to clean the head skin. After the head skin is cleaned and dried, the collection electrode sheet and the incremental auxiliary electrode sheet work to collect the head neural electrical signals. Alcohol cleaning of the head skin reduces the interference of grease and dirt on the collection electrode, improves the contact quality between the electrode and the skin, thereby improving the purity and accuracy of the signal. The grease and dirt on the skin surface will increase the impedance between the electrode and the skin, affecting the transmission quality of the signal. After alcohol cleaning the skin, the impedance can be reduced and the electrode sheet can fit the skin more closely, thereby improving the signal collection efficiency and quality.

[0028] 3. The present invention installs a movable shockproof frame on the top of the horizontal slide. After the neuroelectrophysiological signal acquisition chip is installed, the docking telescopic rod drives the horizontal slide to dock the two groups of interference shielding plates. The movable shockproof frame fits tightly with both ends of the neuroelectrophysiological signal acquisition chip. When the main box shakes during the head physiological signal acquisition process, the outer end of the neuroelectrophysiological signal acquisition chip collides with the anti-vibration shaking plate. The damper and the horizontal spring buffer the collision vibration in the horizontal direction. The interference shielding plate and the bulletproof pad buffer the shaking of the neuroelectrophysiological signal acquisition chip in the vertical direction, thereby preventing the neuroelectrophysiological signal acquisition chip from shifting its position in the main box to cause adverse effects on the physiological signal acquisition process, thereby ensuring the good performance of the neuroelectrophysiological signal acquisition chip.

[0029] 4. The present invention installs an interference shielding plate on the top of the movable shockproof frame. During the operation of the physiological signal acquisition device, the interference shielding plate protects the neuroelectrophysiological signal acquisition chip from industrial frequency and noise interference. The interference shielding plate can effectively isolate or weaken the industrial frequency interference and other noise sources from the outside, maintain the stable working state of the neuroelectrophysiological signal acquisition chip, reduce the signal fluctuation and noise caused by external interference, thereby improving the stability and reliability of the signal, helping to improve the purity and signal-to-noise ratio of the collected signal, making the signal clearer and more accurate, and reducing the difficulty and complexity of subsequent data processing and analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the internal structure of the main box body of the present invention;

[0032] Figure 3 This is a schematic diagram of the internal structure of the adaptive tank of the present invention;

[0033] Figure 4 It is a schematic diagram of the structure of the movable shockproof frame of the present invention;

[0034] Figure 5 It is a schematic diagram of the enlarged structure of point A of the present invention;

[0035] Figure 6 This is a schematic diagram of the internal structure of the collection arc frame of the present invention;

[0036] Figure 7 It is a schematic diagram of the enlarged structure of point B of the present invention;

[0037] Figure 8 It is a schematic diagram of the three-dimensional structure of the position-limiting headband of the present invention;

[0038] Fig. 9 This is a diagram of the acquisition control system of the present invention;

[0039] Fig.10 It is the work flow chart of the present invention.

[0040] In the figure: 1. Collection box seat; 2. Main box body; 3. Embedded cover plate; 4. Constraint arc seat; 5. Collection arc frame; 6. Movable shockproof frame; 7. Interference shielding plate; 8. Center groove; 9. Neuroelectrophysiological signal collection chip; 10. Adaptive adjustment slot; 11. Internal drive slot; 12. Docking telescopic rod; 13. Horizontal slide seat; 14. Working status display screen; 15. Control button; 16. Top slot; 17. Convenient lifting rod; 18. Gas injection channel; 19. Sealing pipe; 20. Arc cavity; 21. Inner vertical plate; 22. Round telescopic rod; 23. Incremental auxiliary electrode sheet; 24. Cleaning flow channel; 25. Collection electrode sheet; 26. Guide top port; 27. Cleaning air port; 28. Fixed seat; 29. ​​Limiting roller sleeve; 30. Limiting headband; 31. Anti-vibration compression groove; 32. Damper; 33. Horizontal spring; 34. Anti-vibration shaking plate; 35. Anti-scratch touch pad; 36. Bulletproof pad; 37. Sealed plug-in slot; 38. Limiting strip; 39. Female buckle; 40. Male buckle. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection or a movable connection, or a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] See also Figure 1 and Figure 6 , an embodiment provided by the present invention: a neuroelectrophysiological signal acquisition device and an acquisition method thereof;

[0045] It includes a constrained arc seat 4, a collection arc frame 5 and an arc cavity 20. The bottom of the collection box seat 1 is equipped with a constrained arc seat 4, the inner side of the constrained arc seat 4 is equipped with a collection arc frame 5, the inner side of the collection arc frame 5 is equipped with a collection electrode sheet 25, the inner center position of the collection arc frame 5 is provided with an arc cavity 20, the inner side of the arc cavity 20 is provided with a range enlargement component, the range enlargement component includes an inner vertical plate 21, a circular telescopic rod 22 and an incremental auxiliary electrode sheet 23, the inner vertical plate 21 is symmetrically installed on the inner side of the arc cavity 20, the circular telescopic rod 22 is installed on the outer side of the inner vertical plate 21, the incremental auxiliary electrode sheet 23 is installed at the telescopic end of the circular telescopic rod 22, and the outer end of the incremental auxiliary electrode sheet 23 slides on the inner side of the arc cavity 20;

[0046] The constraint arc seat 4 is used for the stable connection between the collection box seat 1 and the collection arc frame 5, providing basic strength for the collection arc frame 5. The inner vertical plate 21 is installed on the top of the inner wall of the arc cavity 20. The inner vertical plate 21 provides an installation position for the circular telescopic rod 22 while ensuring its stability during operation. During signal collection, the circular telescopic rod 22 drives the incremental auxiliary electrode sheet 23 to move out of the arc cavity 20, and the incremental auxiliary electrode sheet 23 moves along the bending direction of the arc cavity 20. The incremental auxiliary electrode sheet 23 works together with the main collection electrode sheet 25 to significantly expand the coverage area of ​​signal collection, which helps to capture more and more comprehensive physiological The circular telescopic rod 22 drives the incremental auxiliary electrode sheet 23 to adjust the extension position of the incremental auxiliary electrode sheet 23 according to actual needs to adapt to different head physiological structures and acquisition requirements, thereby reducing the direct contact area between the electrode sheet and the skin, and reducing the adverse effects of skin interference on signal acquisition. The neuro-electrophysiological signal acquisition device directly contacts the head neurons or nerve tissues through the acquisition electrode sheet 25 and the incremental auxiliary electrode sheet 23, and converts the electrical signal into a measurable voltage or current signal.

[0047] See also Figure 1 , Figure 6 and Figure 7 , a neuroelectrophysiological signal acquisition device and an acquisition method thereof;

[0048] It includes a collection arc frame 5, an injection channel 18 and a clean flow channel 24. The collection arc frame 5 is installed on the inner side of the constraint arc seat 4. The inside of the collection arc frame 5 is provided with a clean flow channel 24, and the clean flow channel 24 is located at the outer end of the arc cavity 20. A guide top port 26 is provided on the bottom wall of the arc cavity 20, and the guide top port 26 is connected to the clean flow channel 24. A clean gas port 27 is provided on the inner side of the collection electrode sheet 25, and the clean gas port 27 is connected to the clean flow channel 24. The outer side of the constraint arc seat 4 is provided with an injection channel 18, and the output end of the injection channel 18 is connected to the top center position of the arc cavity 20. A sealing pipe 19 is installed on the outer side of the injection channel 18;

[0049] The output end of the external air supply device is sealed and connected to the sealing pipe 19 through a pipeline. Alcohol gas is introduced from the gas injection channel 18 and flows through the cleaning flow channel 24 from the guide top port 26, and then discharged from the cleaning gas port 27 to clean the head skin. The alcohol gas remains on the surface of the head skin for a period of time, waiting for the alcohol to evaporate to ensure that the skin is dry. After the head skin is clean and dry, the collection electrode sheet 25 and the incremental auxiliary electrode sheet 23 work to collect the head neural electrical signals and transmit them to the neural electrophysiological signal collection chip 9. Alcohol cleaning of the head skin reduces the interference of grease and dirt on the collection electrode sheet 25, and improves the contact quality between the collection electrode sheet 25, the incremental auxiliary electrode sheet 23 and the skin. The grease and dirt on the skin surface will increase the impedance between the collection electrode sheet 25, the incremental auxiliary electrode sheet 23 and the skin, affecting the signal transmission quality. After alcohol cleaning the skin, the impedance can be reduced and the collection electrode sheet 25 and the incremental auxiliary electrode sheet 23 can fit the skin more closely, thereby improving the signal collection efficiency and quality;

[0050] Alcohol has good degreasing ability and can effectively remove grease, dirt and dead skin cells on the surface of the head skin. Alcohol is a commonly used disinfectant that can destroy the cell walls of bacteria and denature bacterial proteins, thereby achieving the effect of disinfection and sterilization. Using alcohol to clean the skin before collecting physiological signals can reduce the risk of infection, protect the safety of the subjects, and reduce interference factors on the skin surface, making the collected physiological signals more stable and reliable, which is helpful for subsequent data analysis and processing.

[0051] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 , a neuroelectrophysiological signal acquisition device and an acquisition method thereof;

[0052] It includes a collection box seat 1, a neural electrophysiological signal collection chip 9 and a horizontal slide 13. A central groove 8 is provided on the bottom wall of the collection box seat 1. A neural electrophysiological signal collection chip 9 is embedded and installed inside the central groove 8. An adaptive adjustment groove 10 is symmetrically provided on the bottom wall of the collection box seat 1. A horizontal slide 13 is movably installed inside the adaptive adjustment groove 10. An inner driving groove 11 is provided on the inner wall of one side of the adaptive adjustment groove 10. A docking telescopic rod 12 is installed inside the inner driving groove 11, and the telescopic end of the docking telescopic rod 12 is connected to the outer end of the horizontal slide 13. A movable shockproof frame 6 is installed on the top of the horizontal slide 13.

[0053] The central groove 8 of the collection box seat 1 preliminarily limits the neuroelectrophysiological signal collection chip 9, the inner drive groove 11 provides an installation position for the docking telescopic rod 12, and the horizontal slide 13 supports the movable shockproof frame 6. After the neuroelectrophysiological signal collection chip 9 is installed in the main box 2, the docking telescopic rod 12 drives the horizontal slide 13 to slide in the adaptation groove 10 to dock the two sets of interference shielding plates 7. The movable shockproof frame 6 fits tightly with both ends of the neuroelectrophysiological signal collection chip 9. When the main box 2 shakes during the head physiological signal collection process, the outer end of the neuroelectrophysiological signal collection chip 9 collides with the anti-vibration shaking plate 34 and slides inside the anti-vibration compression groove 31. The anti-scratch touch pad 35 preliminarily absorbs and buffers the horizontal impact force while preventing the anti-vibration shaking plate 34 from damaging the outer end of the neuroelectrophysiological signal collection chip 9. The damper 32 and the horizontal spring 33 buffer the collision vibration in the horizontal direction.

[0054] See also Figure 1 , Figure 2 , Figure 4 and Figure 5 , a neuroelectrophysiological signal acquisition device and an acquisition method thereof;

[0055] It includes a movable anti-vibration frame 6, an anti-vibration and shaking plate 34 and an interference shielding plate 7. The movable anti-vibration frame 6 is installed on the top of the horizontal slide seat 13. An anti-vibration compression groove 31 is opened on the opposite side of the movable anti-vibration frame 6. A damper 32 is installed on the inner side of the anti-vibration compression groove 31. A horizontal spring 33 is installed on the outer side of the damper 32. The outer end of the horizontal spring 33 is connected to the anti-vibration and shaking plate 34, and the outer end of the anti-vibration and shaking plate 34 slides on the inner wall of the anti-vibration and shaking groove 31. An anti-scratch touch pad 35 is installed on the opposite side of the anti-vibration and shaking plate 34. An interference shielding plate 7 is installed on the top of the movable anti-vibration frame 6. A bullet-proof pad 36 is installed on the bottom of the interference shielding plate 7. A sealing plug-in groove 37 is opened on the outer end of one group of interference shielding plates 7. A limiting insert strip 38 is installed on the outer end of another group of interference shielding plates 7, and the limiting insert strip 38 cooperates with the sealing plug-in groove 37.

[0056] When the two sets of interference shielding plates 7 are connected, the limit insert strip 38 is inserted into the inner side of the sealed inserting groove 37, and the movable shockproof frame 6 and the interference shielding plate 7 provide multi-directional protection for the neuroelectrophysiological signal acquisition chip 9. The interference shielding plate 7 and the bulletproof pad 36 buffer the vertical shaking of the neuroelectrophysiological signal acquisition chip 9, preventing the position deviation of the neuroelectrophysiological signal acquisition chip 9 in the main box 2 from causing adverse effects on the physiological signal acquisition process, thereby ensuring the good performance of the neuroelectrophysiological signal acquisition chip 9;

[0057] During the operation of the physiological signal acquisition device, the interference shielding plate 7 protects the neuroelectrophysiological signal acquisition chip 9 from power frequency and noise interference. The interference shielding plate 7 can effectively isolate or weaken the power frequency interference and other noise sources from the outside, maintain the stable working state of the neuroelectrophysiological signal acquisition chip 9, reduce the signal fluctuation and noise caused by external interference, thereby improving the stability and reliability of the signal, and helping to improve the purity and signal-to-noise ratio of the collected signal, making the signal clearer and more accurate, reducing the difficulty and complexity of subsequent data processing and analysis. High-quality signals and a stable acquisition environment significantly improve the accuracy of data acquisition, which is particularly important for situations where accurate analysis of physiological signals is required in scientific research and clinical applications, such as evaluating neural function and monitoring disease progression. After reducing interference signals, the collected data is cleaner and more regular, and researchers can focus more on the analysis and interpretation of the signal itself, rather than spending a lot of time and energy on data preprocessing and noise removal. The interference shielding plate 7 can also protect the neuroelectrophysiological signal acquisition chip 9 and other related equipment from damage by external electromagnetic radiation and impact to a certain extent, thereby extending the service life and reliability of the equipment.

[0058] See also Figure 1 , Figure 8 and Fig. 9 , a neuroelectrophysiological signal acquisition device and an acquisition method thereof;

[0059] It includes a main box body 2, a fitting cover plate 3 and a limiting headband 30. A working status display screen 14 is arranged on the front of the main box body 2, a control button 15 is arranged on the front of the main box body 2, a fitting cover plate 3 is installed on the top of the main box body 2, a top slot 16 is opened on the top of the fitting cover plate 3, a convenient lifting rod 17 is installed on the inner side of the top slot 16 through a rotating shaft, a fixing seat 28 is symmetrically installed on the outer end of the main box body 2, a limiting sleeve roller 29 is installed on the inner side of the fixing seat 28, and the limiting headband 30 is sleeved on the outer side of the limiting sleeve roller 29, a female buckle 39 is installed on the outer end of one group of limiting headbands 30, and a male buckle 40 is installed on the outer end of the other group of limiting headbands 30, and the male buckle 40 cooperates with the female buckle 39;

[0060] The neuroelectrophysiological signal acquisition chip 9 is electrically connected to an acquisition control system, which is composed of a shielding module and a signal acquisition module. The shielding module is electrically connected to the docking telescopic rod 12, and the signal acquisition module is electrically connected to the acquisition electrode sheet 25, the range enlargement component and the neuroelectrophysiological signal acquisition chip 9. The signal acquisition module is electrically connected to an external air supply device.

[0061] The working status display screen 14 displays the working status of the signal acquisition device, and the device is turned on and off through the control button 15. The interlocking cover plate 3 and the main box body 2 are detachably connected, which is convenient for the later maintenance and replacement of the neuroelectrophysiological signal acquisition chip 9. The entire device is moved and operated through the convenient lifting rod 17. The limiting sleeve roller 29 limits the limiting headband 30. The acquisition device is worn through the limiting headband 30, and the male buckle 40 and the female buckle 39 are used to limit and lock to ensure the stability of the device during the acquisition process. The acquisition control system integrates the driving control of the docking telescopic rod 12, the acquisition electrode sheet 25, the range enlargement component, the neuroelectrophysiological signal acquisition chip 9 and the external air supply device through the shielding module and the signal acquisition module, and realizes the wearing range adjustment, skin alcohol cleaning and physiological signal acquisition steps in turn.

[0062] The collection method of the collection device comprises the following steps:

[0063] Step S1, after the neural electrophysiological signal acquisition chip 9 is installed in the main box 2, the docking telescopic rod 12 drives the horizontal slide 13 to dock the two sets of interference shielding plates 7;

[0064] Step S2, the collection device is worn by the limiting headband 30, and the circular telescopic rod 22 drives the incremental auxiliary electrode sheet 23 to move out of the arc cavity 20;

[0065] Step S3, when the main box 2 shakes during the head signal collection process, the outer end of the neuro-electrophysiological signal collection chip 9 collides with the anti-vibration shaking plate 34, and the damper 32 and the horizontal spring 33 buffer the collision vibration.

[0066] In step S2, the following steps are also included:

[0067] Step S21, alcohol gas is introduced from the gas injection channel 18 and discharged from the cleaning gas port 27 through the cleaning flow channel 24 to clean the head skin;

[0068] Step S22 , after the head skin is cleaned and dried, the collection electrode sheet 25 and the incremental auxiliary electrode sheet 23 work to collect the head nerve electrical signals and transmit them to the nerve electrophysiological signal collection chip 9 .

[0069] Working principle: When using the device, first install the neuroelectrophysiological signal acquisition chip 9 in the main box 2, then dock the telescopic rod 12 to drive the horizontal slide 13 to dock the two sets of interference shielding plates 7;

[0070] The collection device is worn by the limiting headband 30, and the circular telescopic rod 22 drives the incremental auxiliary electrode sheet 23 to move out of the arc cavity 20, and the alcohol gas is introduced from the gas injection channel 18 and discharged from the clean gas port 27 through the cleaning flow channel 24 to clean the head skin. After the head skin is clean and dry, the collection electrode sheet 25 and the incremental auxiliary electrode sheet 23 work to collect the head nerve electrical signals and transmit them to the nerve electrophysiological signal collection chip 9;

[0071] When the main box 2 shakes during the head signal collection process, the outer end of the neuro-electrophysiological signal collection chip 9 collides with the anti-vibration shaking plate 34, and the damper 32 and the horizontal spring 33 buffer the collision vibration.

[0072] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A neuroelectrophysiological signal acquisition device, comprising an acquisition box seat (1), a main box body (2) and a constraint arc seat (4), characterized in that: A main box body (2) is installed on the top of the collection box seat (1), a restraining arc seat (4) is installed on the bottom of the collection box seat (1), and a collection arc frame (5) is installed on the inner side of the restraining arc seat (4); A collecting electrode sheet (25) is installed on the inner side of the collecting arc frame (5); an arc cavity (20) is opened at the inner center of the collecting arc frame (5); a range enlargement component is arranged on the inner side of the arc cavity (20); the range enlargement component comprises an inner vertical plate (21), a circular telescopic rod (22) and an incremental auxiliary electrode sheet (23); the inner vertical plate (21) is symmetrically installed on the inner side of the arc cavity (20); the circular telescopic rod (22) is installed on the outer side of the inner vertical plate (21); the incremental auxiliary electrode sheet (23) is installed on the telescopic end of the circular telescopic rod (22); and the outer end of the incremental auxiliary electrode sheet (23) slides on the inner side of the arc cavity (20).

2. A neuro-electrophysiological signal acquisition device according to claim 1, characterized in that: A clean flow channel (24) is provided inside the collecting arc frame (5), and the clean flow channel (24) is located at the outer end of the arc-shaped cavity (20); a guide top opening (26) is provided on the bottom wall of the arc-shaped cavity (20), and the guide top opening (26) is in conduction with the clean flow channel (24); a clean air port (27) is provided on the inner side of the collecting electrode sheet (25), and the clean air port (27) is in conduction with the clean flow channel (24).

3. A neural electrophysiological signal acquisition device according to claim 2, characterized in that: An air injection channel (18) is provided on the outer side of the constraint arc seat (4), and the output end of the air injection channel (18) is connected to the top center position of the arc cavity (20), and a sealing pipe (19) is installed on the outer side of the air injection channel (18).

4. The neural electrophysiological signal acquisition device according to claim 1, characterized in that: The bottom wall of the collection box seat (1) is provided with a central groove (8), the inner side of which is embedded a neuroelectrophysiological signal collection chip (9), the bottom wall of the collection box seat (1) is symmetrically provided with an adaptable adjustment groove (10), the inner side of which is movably provided with a horizontal slide seat (13), an inner driving groove (11) is provided on the inner wall of one side of the adaptable adjustment groove (10), a docking telescopic rod (12) is installed on the inner side of the inner driving groove (11), and the telescopic end of the docking telescopic rod (12) is connected to the outer end of the horizontal slide seat (13).

5. A neural electrophysiological signal acquisition device according to claim 4, characterized in that: A movable anti-vibration frame (6) is installed on the top of the horizontal slide seat (13), and an anti-vibration compression groove (31) is opened on the opposite side of the movable anti-vibration frame (6). A damper (32) is installed on the inner side of the anti-vibration compression groove (31), and a horizontal spring (33) is installed on the outer side of the damper (32). The outer end of the horizontal spring (33) is connected to an anti-vibration shaking plate (34), and the outer end of the anti-vibration shaking plate (34) slides on the inner wall of the anti-vibration compression groove (31), and an anti-scratch touch pad (35) is installed on the opposite side of the anti-vibration shaking plate (34).

6. A neural electrophysiological signal acquisition device according to claim 5, characterized in that: An interference shielding plate (7) is installed at the top of the movable shockproof frame (6), a bulletproof pad (36) is installed at the bottom of the interference shielding plate (7), a sealing plug-in groove (37) is opened at the outer end of one group of interference shielding plates (7), and a limiting plug-in strip (38) is installed at the outer end of another group of interference shielding plates (7), and the limiting plug-in strip (38) is matched with the sealing plug-in groove (37).

7. The neural electrophysiological signal acquisition device according to claim 1, characterized in that: The front of the main box (2) is provided with a working status display screen (14), the front of the main box (2) is provided with a control button (15), the top of the main box (2) is provided with a fitting cover plate (3), the top of the fitting cover plate (3) is provided with a top slot (16), the inner side of the top slot (16) is provided with a convenient lifting rod (17) through a rotating shaft, the outer end of the main box (2) is symmetrically provided with a fixing seat (28), the inner side of the fixing seat (28) is provided with a limiting sleeve roller (29), the outer side of the limiting sleeve roller (29) is sleeved with a limiting headband (30), the outer end of one group of limiting headbands (30) is provided with a female buckle (39), the outer end of the other group of limiting headbands (30) is provided with a male buckle (40), and the male buckle (40) matches the female buckle (39).

8. The neural electrophysiological signal acquisition device according to claim 1, characterized in that: The neuroelectrophysiological signal acquisition chip (9) is electrically connected to an acquisition control system, the acquisition control system is composed of a shielding module and a signal acquisition module, the shielding module is electrically connected to the docking telescopic rod (12), the signal acquisition module is electrically connected to the acquisition electrode sheet (25), the range enlargement component and the neuroelectrophysiological signal acquisition chip (9), and the signal acquisition module is electrically connected to an external air supply device.

9. A method for collecting neuroelectrophysiological signals, applicable to a neuroelectrophysiological signal collecting device according to any one of claims 1 to 8, characterized in that: The collection method of the collection device comprises the following steps: Step S1, after the neural electrophysiological signal acquisition chip (9) is installed in the main box (2), the docking telescopic rod (12) drives the horizontal slide seat (13) to dock the two sets of interference shielding plates (7); Step S2, wearing the collection device through the limiting headband (30), and the circular telescopic rod (22) drives the incremental auxiliary electrode sheet (23) to move out of the arc cavity (20); Step S3: When the main box (2) shakes during the head signal collection process, the outer end of the neuro-electrophysiological signal collection chip (9) collides with the anti-vibration shaking plate (34), and the damper (32) and the horizontal spring (33) buffer the collision vibration.

10. The method for collecting neuroelectrophysiological signals according to claim 9, characterized in that: In the step S2, the following steps are also included: Step S21, alcohol gas is introduced from the gas injection channel (18) and discharged from the cleaning gas port (27) through the cleaning flow channel (24) to clean the head skin; Step S22: After the head skin is cleaned and dried, the collection electrode sheet (25) and the incremental auxiliary electrode sheet (23) work to collect the head nerve electrical signals and transmit them to the nerve electrophysiological signal collection chip (9).

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