A portable video electroencephalograph

Abstract

This invention proposes a portable video EEG device, which solves the problems of large size and lack of portability of existing video EEG devices, thus improving the ease of use of video EEG devices. The portable video EEG device includes: a portable platform, an EEG acquisition unit, and a video acquisition unit; wherein the EEG acquisition unit and the video acquisition unit are respectively connected to the portable platform. In the working state, the EEG acquisition unit and the video acquisition unit are mechanically and electrically connected to the portable platform. The EEG acquisition unit is worn on the head of the subject and acquires the subject's EEG signals, then sends the acquired EEG signals to the EEG signal processing device on the portable platform; the video acquisition unit aligns the image acquisition area of ​​the acquisition terminal with the subject and acquires the subject's video signals, then sends the acquired video signals to the video signal processing device on the portable platform.

Description

Technical Field

[0001] This invention relates to an electroencephalogram (EEG) device, specifically a portable video EEG device, belonging to the field of video EEG monitoring technology. Background Technology

[0002] Electroencephalography (EEG), a technology that can monitor brain waves in the human head in real time, is of great significance for human health monitoring, disease diagnosis, and scientific research. Brain waves are not only related to internal brain activity but also to facial and limb movements. Certain activities performed by the human body can also affect brain wave signals. EEG signal acquisition alone is insufficient for practical applications; therefore, combining video acquisition with EEG effectively solves this problem. In the application of EEG technology to medical diagnosis, video EEG technology is widely used to better determine the correlation between specific brain waves and the subject's limb and facial movements.

[0003] The addition of video capture functionality requires participants to move within the video capture area, impacting their mobility and daily life. Furthermore, to avoid interference between different video EEG tests, these tests are typically conducted in private rooms, significantly increasing hospital facility costs and waiting times. Therefore, enabling participants to move relatively freely, overcoming the restrictions imposed by video EEG, and making fuller and more efficient use of hospital space has become a challenging problem.

[0004] Current video-on-electroencephalography (VEEG) requires a specific treatment room for EEG monitoring. The EEG equipment must be connected and the video acquisition device adjusted before continuous, long-term monitoring begins. Because VEEG technology integrates EEG signal acquisition and processing equipment with video acquisition equipment, and requires adjustment of the video device angle according to the monitoring status, the equipment cannot move with the subject during monitoring. The subject typically needs to lie down or sit on a treatment bed and cannot move freely. The problems with current VEEG are: the subject needs to remain in the treatment room throughout the video and EEG acquisition process, which is inconvenient and places high demands on the time and location of VEEG monitoring; hospitals or medical examination centers typically need to provide dedicated VEEG monitoring treatment rooms, which cannot be used for other work during video EEG acquisition, resulting in significant occupation of medical resources, requiring advance scheduling of testing, and low utilization and flexibility of hardware facilities. The camera used for video acquisition should have position and attitude adjustment functions. If the rigidity of the camera support rod is low, it will inevitably cause significant camera shaking and unstable attitude control during movement and image acquisition, resulting in blurred images, low camera image quality, and problems affecting video monitoring effects. Existing single-rod telescopic camera support rods are usually series telescopic rod structures, and their long cantilever structure is difficult to meet the requirements of stability and high rigidity, which to some extent restricts the mobility of video EEG devices.

[0005] EEG monitoring equipment is typically bulky and inconvenient to move. In practical applications, portable EEG devices effectively address the issue of participants being confined to the monitoring location and unable to move freely. Furthermore, the interpretation of EEG signals is dependent on electrode placement, which requires precise positioning. However, different participants have varying head sizes and shapes, necessitating clinical measurement of skull diameters to calculate electrode positions before individual placement. This approach cannot effectively and automatically adapt to different head sizes and shapes, and real-time correction of electrode displacement is required during EEG signal acquisition, increasing the difficulty and workload of clinical procedures. Summary of the Invention

[0006] In view of this, the present invention proposes a portable video EEG device, which adopts a modular design to solve the problems of existing video EEG devices, such as large size, inability to automatically and adaptively arrange electrodes, low rigidity and stability of video acquisition support rods, and insufficient mobility. While ensuring accurate EEG electrode arrangement and stable video image acquisition, the invention achieves portability and ease of use for the video EEG device.

[0007] To achieve the above objectives, the present invention provides a portable video EEG device, comprising: a portable platform, an EEG acquisition unit, and a video acquisition unit.

[0008] The EEG acquisition unit and the video acquisition unit are respectively connected to the portable platform;

[0009] The EEG acquisition unit is worn on the head of the person being tested and acquires the person's EEG signals, and then sends the acquired EEG signals to the EEG signal processing device on the portable platform.

[0010] The video acquisition unit is used to acquire video signals from the person being tested and send the acquired video signals to the video signal processing device on the portable platform.

[0011] The distance between the EEG acquisition unit and the portable platform is adjustable, and the video acquisition unit can be adjusted in position and posture to ensure that its acquisition terminal is aligned with the person being tested.

[0012] As a preferred embodiment of the present invention, the EEG acquisition unit includes: an electrode cap, an electrode wire storage wheel, electrode wires, and a signal plug;

[0013] The electrode cap is worn on the head of the test subject and has an electrode cap signal interface. The electrode wire storage wheel is mounted on the portable platform, and the electrode wire is wound around the electrode wire storage wheel. The end of the electrode wire is electrically connected to a signal plug, and the other end of the electrode wire is electrically connected to the EEG signal processing device in the portable platform. By adjusting the length of the electrode wire, the distance between the portable platform and the test subject wearing the electrode cap can be adjusted.

[0014] The electrode cap includes: an electrode cap body, electrode components, and an electrode cap tensioning band; a plurality of electrode components are distributed on the surface of the electrode cap body; the two ends of the electrode cap tensioning band are fixedly connected to the electrode cap body.

[0015] In a preferred embodiment of the present invention, the electrode assembly includes: an electrode holder, an electrode cover, an electrode, and an airbag;

[0016] The electrode holder is a hollow cylindrical structure with an opening at one end and a through hole at the other end. An electrode is installed inside the electrode holder and can move axially within it. The electrode is a stepped shaft with a large-diameter portion slidingly fitted into the inner hole of the electrode holder and a small-diameter portion extending out from the through hole at the end of the electrode holder. An electrode cover is installed at the open end of the electrode holder, and a through hole is provided in the center of the electrode cover. A central blind hole is machined on the end of the electrode with a large diameter portion facing the electrode cover. An air bladder is installed inside the central blind hole, and the air vent of the air bladder extends out from the central through hole of the electrode cover. By inflating the air bladder, the air bladder expands and compresses the electrode, causing the electrode to contact the surface being measured.

[0017] In a preferred embodiment of the present invention, the electrode assembly further includes an electrode clamping assembly; the electrode clamping assembly is used for limiting the position of the electrode.

[0018] The electrode clamping assembly includes: a clamping seat, clamping arm A, clamping arm B, a support spring, and a shape memory alloy wire; the clamping seat surrounds the outer circumference of the electrode seat and is used to support clamping arm A and clamping arm B; clamping arm A and clamping arm B are arranged to cross each other to form a scissor structure, and their intersection is rotatably connected to the clamping seat through a rotating shaft;

[0019] The front ends of clamping arms A and B are arc-shaped structures that match the outer circumference of the electrode base and are located on two opposite sides of the outer circumference of the electrode base. The inner arc surfaces of clamping arms A and B each have protruding structures. The side wall of the electrode base has through holes at positions corresponding to the protruding structures. The protruding structures can pass through the through holes at the corresponding positions to clamp the electrode and restrict its movement.

[0020] A support spring is provided between the rear ends of clamping arm A and clamping arm B, and a shape memory alloy wire is also provided between the rear ends of clamping arm A and clamping arm B. The length of the shape memory alloy wire can be controlled by adjusting the temperature through electric heating.

[0021] As a preferred embodiment of the present invention, the portable platform includes: a platform body, functional modules, a voice device, and a carrying strap;

[0022] The functional modules are located within the main body of the platform;

[0023] The voice device is installed on the surface of the platform body to collect the voice of the person being tested and transmit it back to the hospital monitoring terminal through the functional module inside the platform body. At the same time, it plays the prompts received from the hospital monitoring terminal, completing the voice interaction between the person being tested and the personnel at the hospital monitoring terminal.

[0024] The shoulder strap is installed at the rear of the platform body.

[0025] In a preferred embodiment of the present invention, the functional modules include functional module A, functional module B, and functional module C;

[0026] The functional module A includes an electroencephalogram (EEG) signal processing device, a video signal processing device, and a wireless network device.

[0027] Functional module B includes a computer and a data storage device;

[0028] The functional module C includes a power bank and a power supply module.

[0029] The three functional modules are stacked one on top of the other inside the platform body, and are electrically connected to corresponding quick interfaces inside the platform body through their respective connectors.

[0030] As a preferred embodiment of the present invention, the portable platform is further provided with a moving device that can be folded and unfolded relative to the portable platform.

[0031] The mobile device includes a mobile device base, a moving link, a tension link, a transmission link, and a roller assembly;

[0032] The mobile device is connected to the platform body via a mobile device base located on the back of the platform body; the mobile connecting rod is slidably connected to the mobile device base, and the tension connecting rod is inserted into the mounting hole of the mobile connecting rod and slidably connected to the mobile connecting rod.

[0033] The lower end of the movable link is rotatably connected to a transmission link on each of its left and right sides. The two transmission links are arranged in a figure-eight shape, and a roller assembly is provided at the lower end of each transmission link. The roller assembly can be folded upward to a horizontal state or unfolded downward to a vertical state.

[0034] As a preferred embodiment of the present invention, the platform body is further provided with a locking device for limiting the position of the functional modules;

[0035] The locking device includes: a locking baffle, a locking shaft, a locking support, a locking spring, and a buckle; the locking shaft is vertically installed on the side of the platform body, and its upper and lower ends are fixedly connected to the platform body; the locking baffle is a right-angle structure and is installed at the corner of the front face and the corresponding side of the platform body. The locking baffle is rotatably connected to the locking shaft and can rotate relative to the locking shaft, thereby switching between the locked state and the unlocked state.

[0036] The top of the platform body is fixedly connected to a locking support column. The upper end of the locking baffle on the front face of the platform body extends to the top of the platform body with a limiting block. A clearance U-shaped groove is provided on the limiting block at the position corresponding to the locking support column. Upward protrusions are provided on both sides of the clearance U-shaped groove.

[0037] A locking spring is fitted on the locking support. The lower end of the locking spring abuts against the buckle fitted on the locking support, and the upper end abuts against the top shoulder of the locking support. The buckle and the locking support slide in engagement.

[0038] The locking spring is in a pre-compressed state. In the locked state, the buckle, under the action of the locking spring, abuts against the locking baffle extending towards the top of the platform body with a limit block, and blocks the protruding structures on both sides of the U-shaped groove of the locking baffle. At this time, the locking baffle cannot rotate around the locking axis. When unlocking, the buckle is lifted so that it moves away from the locking baffle and extends towards the top of the platform body with a limit block, and the buckle no longer abuts against the protruding structures on both sides of the U-shaped groove of the locking baffle, thereby releasing the constraint on the locking baffle, and the locking baffle can rotate around the locking axis.

[0039] In a preferred embodiment of the present invention, the video acquisition unit includes: a flipping component, a telescopic component, a camera turntable, and a camera component;

[0040] The camera turntable is installed on the side of the platform body in sequence via a telescopic component and a flipping component; wherein the flipping component is directly connected to the platform body, the telescopic component is rotatably connected to the flipping component, the camera turntable is set at the telescopic end of the telescopic component, and the camera component is rotatably connected to the camera turntable.

[0041] In a preferred embodiment of the present invention, the telescopic assembly includes a telescopic support, a telescopic platform, and a telescopic rod; the telescopic support is rotatably connected to the flipping platform of the flipping assembly, one end of the telescopic rod is rotatably connected to the telescopic support via a lug, and the other end is rotatably connected to the telescopic platform via a lug; that is, the telescopic rod is disposed between the telescopic support and the telescopic platform; the camera turntable is mounted on the telescopic platform, thereby driving the camera turntable to extend and retract through the extension and retraction of the telescopic rod, thereby achieving position adjustment;

[0042] The telescopic assembly includes two telescopic rods, two tensioners, and two tension ropes. The two telescopic rods, the telescopic support, and the telescopic platform form a trapezoidal structure, with the two telescopic rods serving as the two sides of the trapezoidal structure. Each telescopic support is equipped with a tensioner corresponding to each telescopic rod, and each tensioner is equipped with a tension rope. The two tension ropes are arranged in a crisscross pattern, with one end of the tension rope wrapped inside the corresponding tensioner and the other end fixedly connected to the telescopic platform.

[0043] Beneficial effects:

[0044] (1) The portable video EEG device of the present invention can solve the problems of large size and lack of portability of existing video EEG devices. The present invention adopts a modular design, which can select a mobile battery of appropriate capacity according to the test time, a storage device of appropriate capacity according to the quality of video images, and decide whether to equip a wireless transmission module according to whether real-time online monitoring is required. It has the function of modular configuration according to actual use needs, thereby selecting appropriate configuration, reducing overall weight and improving resource utilization efficiency. The modular interface enables quick installation and replacement of different modules. After the configuration and installation are completed, the position is locked, making the video EEG portable. The portable video EEG device adopts a high-rigidity and high-stability video acquisition unit, which can monitor the whole body range of the test subject. It can not only meet the requirements of mobile portability, but also be used in a fixed environment. By adjusting the telescopic component of the video acquisition unit, the distance and angle of the camera component relative to the test subject can be adjusted. It is telescopic, has a wider field of view, and is easy to use.

[0045] (2) In the portable video EEG device of the present invention, the electrode assembly is set on the electrode cap according to the standard electrode placement method. When in use, the head reference is determined by the center of the electrode cap. The electrode assembly on the electrode cap can determine the application position of different electrodes according to the position ratio determined by the electrode cap itself. Each electrode assembly has a telescopic function and its telescopic axis points to the virtual center of the electrode cap. By adjusting the wearing position of the electrode cap, the virtual center of the electrode cap is made to be close to the electrode ratio calculation center of the test subject's head. Then, the electrodes are made to fit the head through the telescopic function of each electrode assembly, so that the position of each electrode does not need to be adjusted one by one.

[0046] (3) The electrode assembly of the present invention has a low-stress adaptive adjustment function driven by air pressure. By driving each electrode with air pressure until the electrode contacts the head and reaches pressure balance, the electrodes achieve uniform contact with the surface being measured. During the electrode extension and retraction adjustment process, the shape memory alloy clamping device is energized and overcomes the spring force through shape memory alloy tension, maintaining the open state. The electrodes are arranged in conjunction with the air pressure application. After the pressure of the electrode contacting the scalp is balanced and stable, the shape memory alloy clamping device is de-energized. The shape memory alloy wire relaxes, and under the action of the spring, the shape memory alloy clamping device clamps the electrode extension and retraction structure to fix the electrode position. Then the air circuit is cut off. The electrode extension and retraction is made smoother in the adjustment process and the pressure applied to the head by air pressure balance, improving comfort. After the pressure is applied, the electrodes are clamped by shape memory alloy, avoiding the need to carry an air cylinder for a long time to refill.

[0047] (4) In the portable video EEG device of the present invention, the video acquisition device adopts a parallel high-rigidity telescopic mechanism, which is combined with a tension rope to achieve high-rigidity support and eliminate gaps in the support state by tensioning the mechanism. The tension rope is used for buffering and energy absorption to reduce the impact and vibration during movement and improve the imaging quality.

[0048] (5) In the portable video EEG device of the present invention, the electrode cap of the EEG acquisition unit is equipped with electrode wires. The electrode wires are wound on the spool of the winder. The length of the wires extending from the spool can be adjusted according to different usage situations, such as when using it while carrying it with you or when using it while lying in bed.

[0049] (6) In the portable video EEG device of the present invention, the retractable roller is convenient for long-distance movement; it is linked with the moving lever, and when the lever is extended, the roller is driven to extend through the internal connecting rod; when the roller is not needed, the lever can be retracted to drive the roller to retract.

[0050] (7) The portable video EEG device of the present invention has a remote monitoring function. It transmits video and EEG information back to the test area in real time through a wireless network device, and can monitor the status of the test subject in real time. In addition, it has a voice interaction function. When the staff in the test area need to remind or communicate with the test subject, it can be achieved through the voice interaction function.

[0051] (8) Different functional modules and the main body of the device have power supply and information interfaces; the main body of the device has a locking function after installation to prevent it from falling out during movement. Attached Figure Description

[0052] Figure 1 This is a schematic diagram of the portable video EEG device of the present invention;

[0053] Figure 2 This is a front view of the portable platform in this invention;

[0054] Figure 3 This is a schematic diagram of the back of the portable platform in this invention;

[0055] Figure 4 This is a schematic diagram of the folded and stowed state of the mobile device on the portable platform.

[0056] Figure 5 A cross-sectional view of the mobile device on the portable platform in its folded-up state;

[0057] Figure 6 A schematic diagram of the mobile device in its unfolded state on a portable platform;

[0058] Figure 7 A cross-sectional view of the mobile device deployed on a portable platform;

[0059] Figure 8 This is a schematic diagram of the functional modules on a portable platform;

[0060] Figure 9 This is a schematic diagram of the functional module interfaces on a portable platform;

[0061] Figure 10 This is a schematic diagram of the EEG acquisition unit;

[0062] Figure 11 This is a schematic diagram of the electrode cap in the EEG acquisition unit;

[0063] Figure 12 This is a cross-sectional view of the electrode cap in the EEG acquisition unit;

[0064] Figure 13 This is a schematic diagram of the electrode assembly in the EEG acquisition unit;

[0065] Figure 14 This is a cross-sectional view of the electrode assembly in the EEG acquisition unit;

[0066] Figure 15 This is a schematic diagram of the electrode clamping assembly in the EEG acquisition unit;

[0067] Figure 16 A schematic diagram illustrating the working principle of a pneumatically driven adaptive telescopic electrode.

[0068] Figure 17 This is a schematic diagram of the video acquisition unit;

[0069] Figure 18 This is a schematic diagram of the video capture unit flipping component;

[0070] Figure 19 This is a schematic diagram of the telescopic component in the video acquisition unit;

[0071] Figure 20 This is a cross-sectional view of the camera turntable in the video acquisition unit;

[0072] Figure 21 This is an exploded view of the telescopic rod and its locking nut in the video acquisition unit.

[0073] Figure 22 This is a cross-sectional view of the telescopic rod and its locking nut in the video acquisition unit.

[0074] Figure 23 A schematic diagram showing the extended state of the video capture unit;

[0075] Figure 24 This is a schematic diagram showing the locking device on a portable platform in a locked state.

[0076] Figure 25 A partial schematic diagram showing the locking device in the locked state;

[0077] Figure 26 A partial schematic diagram showing the locking device in the unlocked state;

[0078] Figure 27 A partial schematic diagram of the locking device with the locking baffle in the extended position;

[0079] Figure 28 A partial cross-sectional view showing the locking device in the locked state;

[0080] Figure 29 This is a schematic diagram of the locking device (with the locking baffle extended).

[0081] The components are: 1-Portable platform, 11-Platform body, 12-Mobile device, 121-Mobile device base, 122-Mobile linkage, 123-Tension linkage, 124-Transmission linkage, 125-Roller bracket, 126-Transmission shaft, 127-Support shaft, 128-Rolling wheel, 13-Functional module, 131-Functional module A, 132-Functional module B, 133-Functional module C, 134-Quick interface for functional module A, 135-Quick interface for functional module B, 136-Quick interface for functional module C, 137-Functional module status indicator, 14-Locking device, 141-Locking baffle, 142-Locking pivot, 143-Locking support, 144-Locking spring, 145-Snap fastener; 15-Voice device, 16-Shoulder strap, 17-Support plate, 18-Back plate;

[0082] 2-EEG acquisition unit, 21-Electrode cap, 211-Electrode cap body, 212-Electrode assembly, 2121-Electrode base, 2122-Electrode cover, 2123-Electrode, 2124-Airbag, 2125-Electrode clamping assembly, 21251-Clamping seat, 21252-Clamping arm A, 21253-Clamping arm B, 21254-Supporting spring, 21255-Shape memory alloy wire, 213-Electrode cap signal interface, 214-Electrode cap tension band, 22-Electrode wire storage wheel, 23-Electrode wire, 24-Signal plug;

[0083] 3-Video acquisition unit, 31-Flip assembly, 311-Flip support, 312-Flip linkage, 313-Flip platform, 32-Telescopic assembly, 321-Telescopic support, 322-Telescopic rod, 3221-Outer rod of telescopic rod, 3222-Locking nut, 323-Telescopic platform, 324-Tensioner, 325-Tension rope, 33-Camera turntable, 34-Camera assembly. Detailed Implementation

[0084] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0085] Example 1:

[0086] This embodiment proposes a portable video EEG device to solve the problem that existing video EEG devices cannot move with the person being tested. This allows the person being tested to move to other locations without interrupting the video EEG measurement, instead of being confined to the observation room.

[0087] like Figure 1As shown, the portable video EEG device includes: a portable platform 1, an EEG acquisition unit 2, and a video acquisition unit 3; wherein the EEG acquisition unit 2 and the video acquisition unit 3 are respectively connected to the portable platform 1 (e.g., respectively connected to the left and right sides of the portable platform 1). The EEG acquisition unit 2 is mechanically and electrically connected to the portable platform 1 in the working state, and the video acquisition unit 3 is mechanically and electrically connected to the portable platform 1. The EEG acquisition unit 2 is worn on the head of the subject and acquires the subject's EEG signals, then sends the acquired EEG signals to the EEG signal processing device on the portable platform 1; the video acquisition unit 3 aligns the image acquisition area of ​​its acquisition terminal with the subject to acquire the subject's video signals, and sends the acquired video signals to the video signal processing device on the portable platform 1.

[0088] The EEG acquisition unit 2 can be positioned relative to the portable platform 1 (i.e., the distance between them is adjustable), such as adjusting the length of the electrode wire 24 extending between the EEG acquisition unit 2 and the portable platform 1. The video acquisition unit 3 can be positioned and oriented to ensure its acquisition terminal is aligned with the subject, such as adjusting the distance and angle between the acquisition terminal of the video acquisition unit 3 and the subject. When the subject needs to move, the subject moves the portable video EEG device, continuously monitoring EEG and video signals during the movement.

[0089] As an example, the portable platform 1 is a backpack that can be hung on the shoulder or back of the person being tested and moved with them.

[0090] This device addresses the problems of existing video EEG devices being bulky and lacking portability, and the fact that subjects typically need to undergo video EEG monitoring in a specific treatment room and cannot move around. It enables the video EEG device to be portable, allowing subjects to move around with it after wearing and setting it up, without interrupting video EEG acquisition, thus improving the ease of use of the video EEG device.

[0091] This portable video EEG device features a modular interface, allowing for the customization of functional modules to suit various needs. These modules can be configured based on usage duration (e.g., portable battery capacity), video image quality (e.g., storage device memory size), and whether a wireless communication module, microphone, and microcomputer are included, depending on the requirement for real-time online data monitoring. Furthermore, an AI-assisted module can be configured for data preprocessing and monitoring, providing alerts via voice or other means if the monitoring is ineffective, such as indicating poor posture or signal cable contact.

[0092] Example 2:

[0093] Based on the above embodiment 1, this embodiment provides a specific structural form of the portable platform 1, the EEG acquisition unit 2, and the video acquisition unit 3.

[0094] like Figure 2 and Figure 3 As shown, the portable platform 1 includes: a platform body 11, a functional module 13, a locking device 14, a voice device 15, and a shoulder strap 16; the functional module 13 is placed inside the platform body 11; the locking device 14 is used to lock the position of the functional module 13 to prevent it from slipping out of the platform body 11. The voice device 15 is installed on the platform body 11 (such as the top surface of the platform body 11) and is used to collect the voice of the test subject and transmit it back to the hospital monitoring terminal through the functional module 13 (computer and wireless network device) inside the platform body 11. At the same time, it plays the prompts received from the hospital monitoring terminal, completing the voice interaction between the test subject and the hospital monitoring terminal personnel; the shoulder strap 16 is installed on the rear side of the platform body 11, and the portable video EEG device can be hung on the shoulder and back of the test subject through the shoulder strap 16, moving with the test subject.

[0095] like Figure 8 and Figure 9 As shown, functional module 13 includes functional module A131, functional module B132, and functional module C133. Functional module A131 includes an EEG signal processing device, a video signal processing device, and a wireless network device; functional module B132 includes a computer and a data storage device; and functional module C133 includes a mobile power supply and a power supply module. The EEG signal processing device performs noise reduction and signal amplification on the EEG signals acquired by the EEG acquisition unit 2. After preliminary abnormal signal identification and labeling by the computer, the data is stored in the data storage device. Furthermore, the data can be transmitted back to the hospital monitoring terminal via the wireless network device. Thus, this portable video EEG device achieves real-time transmission and monitoring of EEG and video signals via the wireless network device, and enables voice interaction between the tested person and the monitoring terminal via a voice device combined with the wireless network device, achieving an effect similar to monitoring in a treatment room.

[0096] In this example, three functional modules are stacked vertically inside the platform body 11. Each module connects to quick-connect interfaces 134 (A), 135 (B), and 136 (C) within the platform body 11 via its respective connector, thus achieving electrical connection. Specifically, functional modules A131, B132, and C133 have corresponding connectors. By placing each functional module into its corresponding position within the platform body 11, the connection between the functional module and its corresponding quick-connect interface is completed.

[0097] In addition, each functional module has a corresponding status indicator light 137, which indicates whether the functional module and its corresponding quick interface are properly connected. When a functional module is installed in place, the corresponding status indicator light 137 lights up; if it is not placed in place, the corresponding status indicator light 137 does not light up.

[0098] Therefore, this portable video EEG device has functional zones, implemented through functional modules on a portable platform. Modular devices with different functions are installed in different areas, including a support function area, an instrument and storage area, and an acquisition and processing area. The support function area mainly includes a battery to provide power to the entire device; the instrument and storage area mainly includes information storage devices, network devices, etc., providing information interaction interfaces; the acquisition and processing area mainly includes equipment for acquiring and processing EEG and video signals.

[0099] As an example, to facilitate the movement of the portable platform 1, a moving device 12 is also provided on the portable platform 1; and the moving device 12 can be folded or unfolded relative to the portable platform 1. Figures 4-7 As shown, the moving device 12 includes a moving device base 121, a moving link 122, a tension link 123, a transmission link 124, and a roller assembly. The mobile device 12 is connected to the platform body 11 via a mobile device base 121 located on the back of the platform body 11. The mobile linkage 122 is slidably connected to the mobile device base 121 (i.e., the mobile device base 121 is provided with a mounting hole that slides with the mobile linkage 122; it can be understood that the mounting hole has a mechanical limiter that can limit the extension length of the mobile linkage 122 to prevent the mobile linkage 122 from being pulled out). The tension linkage 123 is inserted into the mounting hole of the mobile linkage 122 (it can be understood that the mounting hole has a mechanical limiter that can limit the extension length of the tension linkage 123 to prevent the tension linkage 123 from being pulled out) and slidably connected to the mobile linkage 122. Thus, the tension linkage 123 can be inserted into or extended from the mounting hole of the mobile linkage 122. When the tension linkage 123 extends out of the mounting hole of the mobile linkage 122, it can serve as a handle (similar to a suitcase handle) of the portable platform 1.

[0100] A transmission link 124 is rotatably connected to each of the left and right sides of the lower end of the movable link 122. The two transmission links 124 are arranged in a figure-eight shape, and a roller assembly is provided at the lower end of each transmission link 124. The roller assembly includes: roller bracket 125, drive shaft 126, support shaft 127, and rollers 128. Taking one side of the roller assembly as an example, the lower part of the platform body 11 is provided with a drive shaft 126 and a support shaft 127 along its width direction (along the direction of the front and rear end faces of the platform body 11) (i.e., the drive shaft 126 and the support shaft 127 are arranged in parallel). The lower end of the transmission connecting rod 124 is rotatably connected to the drive shaft 126 and is used to push and pull the drive shaft 126. A roller bracket 125 is provided on the drive shaft 126 along the axial direction, and one end of the roller bracket 125 is connected to the drive shaft 126. A support shaft 127 is provided between the other ends of the two roller brackets 125, and the roller bracket 125 and the support shaft 127 are rotatably connected. The support plate 17 is fixedly connected to the bottom of the platform body 11, and the support plate 17 is fixedly connected to the support shaft 127 of the moving device 12. By pushing and pulling the drive shaft 126, the roller bracket 125 can rotate around the support shaft 127, thereby realizing the retraction or extension of the roller 128.

[0101] When the mobile device 12 is in the retracted state, an external force pulls the tension link 123 outward. The end of the tension link 123 has a mechanical limit on the moving link 122. When the tension link 123 is stretched upward a certain distance, the mechanical limit causes the moving link 122 to move upward. That is, when the moving link 122 is stretched to the top, the transmission link 124 lifts the transmission shaft 126 to the top. The support shaft 127 is a fixed shaft that is fixedly connected to the platform body 11. The transmission shaft 126 is a movable rotating shaft that causes the roller bracket 125 to rotate around the support shaft 127 (e.g., Figure 5 As shown, the right roller bracket 125 rotates counterclockwise around the support shaft 127, and the left roller bracket 125 rotates clockwise around the support shaft 127. A rolling wheel 128 is rotatably connected to the end of the roller bracket 125, causing the rolling wheel 128 to extend to the bottom. At this time, the portable platform 1 can be pushed to roll on the ground by holding the tension rod 123. When it is necessary to retract the mobile device 12, the tension rod 123 is pushed back, which drives the moving rod 122 and the transmission rod 124 to move. This further drives the roller bracket 125 to rotate counterclockwise around the support shaft 127 via the transmission shaft 126, causing the roller bracket 125 to swing inward, thus completing the inward retraction of the rolling wheel 128.

[0102] As an example, the back of the platform body 11 is also provided with a back plate 18 for enclosing the mobile device base 121, the moving link 122, the tension link 123 (the top of the tension link 123 extends out of the back plate as a tension handle), and the transmission link 124.

[0103] like Figure 10As shown, the EEG acquisition unit 2 includes: an electrode cap 21, an electrode wire storage wheel 22, an electrode wire 23, and a signal plug 24. The electrode cap 21 is worn on the head of the subject and has an electrode cap signal interface 213. The electrode wire storage wheel 22 is mounted on the platform body 11, and the electrode wire 23 is wound around the electrode wire storage wheel 22. The end of the electrode wire 23 is electrically connected to the signal plug 24, and the other end of the electrode wire 23 is electrically connected to the functional module A131. During operation, the signal plug 24 is plugged into the electrode cap signal interface 213 to establish an electrical connection. At this time, the signal obtained by the electrode cap 21 is transmitted to the functional module A131 via the electrode wire 23, completing the acquisition and processing of EEG signals. By adjusting the length of the electrode wire 23, the distance between the portable platform 1 and the subject wearing the electrode cap 21 can be adjusted.

[0104] like Figure 11 and Figure 12 As shown, the electrode cap 21 includes: an electrode cap body 211, an electrode assembly 212, an electrode cap signal interface 213, and an electrode cap tension band 214; a plurality of electrode assemblies 212 are distributed on the surface of the electrode cap body 211 (an mounting hole is provided on the electrode cap body 211 corresponding to the position of each electrode assembly 212); the two ends of the electrode cap tension band 214 are fixedly connected to the electrode cap body 211, and the length of the electrode cap tension band 214 can be adjusted to achieve fixed wearing on the head of the person being tested.

[0105] The electrode assembly 212 on the electrode cap 21 is placed according to the standard electrode placement method, specifically according to the standard electrode placement method 10-20 system specified by the International Electroencephalography Society. The relative distance between adjacent electrode positions in the EEG acquisition device is 10% or 20% of the anterior-posterior diameter or transverse diameter.

[0106] like Figure 13 and Figure 14 As shown, the electrode assembly 212 includes: an electrode base 2121, an electrode cover 2122, an electrode 2123, an airbag 2124, and an electrode clamping assembly 2125. The electrode base 2121 is a hollow cylindrical structure with an opening at one end and a through hole at the other end. The electrode 2123 is disposed inside the electrode base 2121 and can move axially within it. The electrode 2123 is a stepped shaft, with its large-diameter portion slidingly engaging with the inner hole of the electrode base 2121, and its small-diameter portion extending out from the through hole at the end of the electrode base 2121. The electrode cover 2122 is mounted on the open end of the electrode base 2121, and a through hole is provided in the center of the electrode cover 2122. A central blind hole is machined on the end of the electrode 2123 facing the electrode cover 2122, and an airbag 2124 is disposed inside the central blind hole. The air vent of the airbag 2124 extends out from the central through hole of the electrode cover 2122. When in use, inflate the airbag 2124. The airbag 2124 expands and compresses the electrode 2123, causing the electrode 2123 to touch the surface being tested (i.e., the head of the person being tested).

[0107] As an example, the air bladders 2124 of each electrode assembly 212 are connected by air passages. When air is inflated into the air bladders 2124 of each electrode assembly 212, the air bladders 2124 expand in volume and compress the electrodes 2123. When the electrodes 2123 touch the surface to be measured, the corresponding air bladders 2124 stop expanding due to the reaction force generated. The remaining air bladders 2124 that are not in contact with the surface to be measured continue to expand under the action of gas and push the corresponding electrodes 2123 until all electrodes 2123 contact the surface to be measured and reach equilibrium.

[0108] like Figure 16 As shown, in this type of electrode cap 21, after wearing the cap 21, the electrodes 2123 are close to the scalp. Under the pressure of the airbag 2124, the electrodes 2123 move forward to conform to the scalp. For subjects with regular head shapes, the electrodes 2123 automatically find their correct position; for subjects with irregular head shapes, the electrode cap 21 is manually adjusted to determine the final position of the electrodes 2123. The core principle of the standard electrode placement method 10-20 system is to divide the brain into corresponding proportions. Figure 16 As shown, this invention aligns the electrode cap 21 with the center of the head, using this center as a positioning reference. The extension and retraction directions of the electrodes on the electrode cap 21 all point towards the virtual center. Therefore, when the center of the head nearly coincides with the virtual center of the electrode cap 21, the proportional division of each electrode can be achieved through the proportional relationship of the electrode cap 21 itself, thus realizing the adaptive positioning of different electrodes. Its principle is equivalent to the proportional scaling of concentric circles, fundamentally solving the problem that existing electrode caps cannot fully adaptively arrange themselves due to individual differences such as different head shapes and sizes. During use, by adjusting the extension and retraction length of the electrode located at the center of the electrode cap 21, the alignment between the center of the head and the virtual center of the electrode cap is achieved. Then, the remaining electrodes can automatically adaptively align and be arranged through the electrode cap, greatly reducing the workload of manual operation and ensuring the accuracy of electrode placement.

[0109] The electrode clamping assembly 2125 is used to limit the position of the electrode 2123. When the EEG acquisition unit 2 is not in use, it constrains the position of the electrode 2123 to prevent the electrode 2123 from moving. When it is needed, the constraint is first released, so that the electrode 2123 moves to contact the surface to be measured under the action of the air bag 2124. When all the electrodes 2123 contact the surface to be measured and reach equilibrium, the electrode clamping assembly 2125 constrains the position of the electrode 2123 again.

[0110] As an example, such as Figure 15As shown, the electrode clamping assembly 2125 includes: a clamping seat 21251, clamping arms A 21252, B 21253, 21254, a support spring, and a shape memory alloy wire 21255; wherein the clamping seat 21251 surrounds the outer circumference of the electrode seat 212 and is used to support the clamping arms A 21252 and B 21253; the clamping arms A 21252 and B 21253 are arranged to cross each other to form a scissor structure, and their intersection is rotatably connected to the clamping seat 21251 through a rotating shaft. The front ends of clamping arms A21252 and B21253 are arc-shaped structures that match the outer circumference of electrode base 212 and are located on two opposite sides of the outer circumference of electrode base 212. Both clamping arms A21252 and B21253 have protruding structures on their inner arc surfaces. Corresponding positions of the protruding structures are provided on the side wall of electrode base 2121. The protruding structures can pass through the corresponding through holes to clamp the electrode 2123 to restrict its movement. A support spring 21254 is provided between the rear ends of clamping arms A21252 and B21253 (that is, the support spring 21254 is horizontally arranged between the rear ends of clamping arms A21252 and B21253, and its two ends are connected to clamping arms A21252 and B21253 respectively). A shape memory alloy wire 21255 is also provided between the rear ends of clamping arms A21252 and B21253. The length of the shape memory alloy wire 21255 can be controlled by adjusting the temperature through electric heating.

[0111] Initially (i.e., when the EEG acquisition unit 2 is not used), the shape memory alloy wire 21255 is in a relaxed state (the shape memory alloy wire 21255 is stretched and deformed at low temperature), the support spring 21254 is pre-compressed, and the clamping arms A21252 and B21253 are clamped towards the center under the action of the support spring 21254, thereby holding the electrode 2123 and restricting its movement; when the EEG acquisition unit 2 is needed, the shape memory alloy wire 21255 is energized, and after the temperature of the shape memory alloy wire 21255 rises, the shape memory alloy wire 21255 shortens and returns to its original length. After the shape memory alloy wire 21255 shortens, it overcomes the force of the support spring 21254, causing the clamping arms A21252 and B21253 to open, releasing the clamping effect on the electrode 2123. At this time, the electrode 2123 can move under the action of the airbag 2124. In use, before inflating the airbag 2124, the shape memory alloy wires 21255 of the electrode clamping components 2125 of each electrode assembly 212 are energized, causing the electrode clamping components 2125 to release the constraint on the electrodes 2123. After all electrodes 2123 have contacted the surface being measured and reached equilibrium, the power to the shape memory alloy wires 21255 of the electrode clamping components 2125 of each electrode assembly 212 is de-energized, and the shape memory alloy wires 21255 return to a relaxed state, that is, the length at low temperature (room temperature). (Here, a two-way shape memory alloy can be selected and the shape memory alloy wires 21255 can be trained to have a "two-way" shape memory effect. For trained two-way shape memory alloys, after cooling down again, they can automatically return to the preset length at low temperature.) This allows the electrode clamping components 2125 to restore the clamping constraint on the electrodes 2123.

[0112] In use, the electrode cap 21 is placed on the head of the person being tested, and the electrode components 212 distributed on the electrode cap body 211 are aligned with the top of the head. The electrode cap 21 is effectively fixed by the electrode cap tension strap 214 to complete the positioning. The shape memory alloy wire 21255 of the electrode clamping component 2125 in each electrode component 212 is energized, so that the electrode clamping component 2125 releases the constraint on the electrode 2123. The air bladder 2124 connected to the air passage of each electrode component 212 is inflated. The air bladder 2124 expands and pushes the corresponding electrode 2123 toward the surface to be tested until each electrode 2123 touches the surface to be tested, so that the air pressure of each air bladder 2124 is balanced. Then the shape memory alloy wire 21255 of the electrode clamping component 2125 in each electrode component 212 is de-energized, and the electrode clamping component 2125 clamps the corresponding electrode 2123 to constrain its position.

[0113] like Figure 17As shown, the video acquisition unit 3 includes: a flipping component 31, a telescopic component 32, a camera turntable 33, and a camera component 34 (the acquisition terminal of the video acquisition unit 3). To enable the video acquisition unit 3 to be adjusted according to the position and posture of the person being tested, the camera turntable 33 is installed on the side of the platform body 11 via the telescopic component 32 and the flipping component 31. The flipping component 31 is directly connected to the platform body 11, the telescopic component 32 is rotatably connected to the flipping component 31, the camera turntable 33 is located at the telescopic end of the telescopic component 32, and the camera component 34 is rotatably connected to the camera turntable 33.

[0114] When the video acquisition unit 3 is in the folded state, the flip component 31 fits against the side of the platform body 11, and the telescopic component 32 retracts, at which point the video acquisition unit 3 fits against the side of the platform body 11; as Figure 18 and Figure 23 As shown. When the video acquisition unit 3 is in the unfolded state, the flip component 31 moves outward relative to the side of the platform body 11, and the telescopic component 32 can rotate relative to the flip component 31 to a set angle, and can drive the camera turntable 33 to extend and retract, thereby adjusting the position and angle of the camera component 34; the camera component 34 itself can also rotate relative to the camera turntable 33 to adjust the angle, so that the image acquisition area of ​​the camera component 34 is aligned with the person being tested to acquire the video signal of the person being tested.

[0115] Example 3:

[0116] Based on the above embodiment 2, a preferred structural form of the flipping component 31 and the telescopic component 32 in the video acquisition unit 3 is given.

[0117] like Figure 17 As shown, the flipping assembly 31 includes: a flipping support 311, a flipping link 312, and a flipping platform 313. The flipping platform 313 has a rectangular structure, and four flipping supports 311 are distributed in a rectangular shape on the side of the platform body 11. Each flipping support 311 is connected to the flipping platform 313 through a flipping link 312. The two ends of the flipping link 312 are rotatably connected to the flipping support 311 and the flipping platform 313, respectively. Thus, by rotating the flipping link 312 to change the angle between it and the platform body 11, the position of the flipping platform 313 relative to the platform body 11 can be adjusted (during the adjustment process, the flipping platform 313 is always parallel to the side of the platform body 11).

[0118] like Figure 19As shown, the telescopic assembly 32 includes a telescopic support 321, a telescopic platform 323, and a telescopic rod 322. The telescopic support 321 is rotatably connected to the flipping platform 313 of the flipping assembly 31. One end of the telescopic rod 322 is rotatably connected to the telescopic support 321, and the other end (telescopic end) is rotatably connected to the telescopic platform 323. That is, the telescopic rod 322 is positioned between the telescopic support 321 and the telescopic platform 323. The camera turntable 33 is mounted on the telescopic platform 323, thereby adjusting its position by extending and retracting the telescopic rod 322.

[0119] As an example, the telescopic assembly 32 includes two telescopic rods 322, two tensioners 324, and two tension ropes 325. The two telescopic rods 322, the telescopic support 321, and the telescopic platform 323 form a trapezoidal structure, with the two telescopic rods 322 forming the two sides of the trapezoidal structure. A tensioner 324 is provided on the telescopic support 321 corresponding to each telescopic rod 322, and each tensioner 324 is provided with a corresponding tension rope 325. The two tension ropes 325 are arranged crosswise, with one end of each rope wrapped inside the corresponding tensioner 324 and the other end fixedly connected to the telescopic platform 323. The extension length of the tension rope 325 from the tensioner 324 is adjusted as the telescopic rod 322 extends or shortens, maintaining tension. The tension rope 325 eliminates the connection gap between the telescopic rods 322 and the telescopic support 321, buffers energy absorption, and reduces vibration.

[0120] As an example, the telescopic rod 322 has an outer telescopic rod 3221 and an inner telescopic rod; the inner telescopic rod can extend and retract relative to the outer telescopic rod 3221; one end of the outer telescopic rod 3221 is rotatably connected to a corresponding lug on the telescopic support 321 via a lug, and the other end is provided with an opening (i.e., the other end is divided into multiple lobes circumferentially through several openings), and a locking nut 3222 is fitted over the opening (e.g., ...). Figure 21 and Figure 22 (As shown in the diagram), one end of the inner rod of the telescopic rod extends into the end of the outer rod 3221, which has an opening, and the other end is rotatably connected to the telescopic platform 323 via a lug. When the locking nut 3222 is loosened, the inner rod of the telescopic rod can extend or retract to adjust its length; after length adjustment, rotating the locking nut 3222 causes the opening at the end of the outer rod 3221 to deform under the pressure of the locking nut 3222, clamping the inner rod of the telescopic rod and completing the locking process.

[0121] As an example, such as Figure 20As shown, the camera turntable 33 includes: a camera turntable base 331, a turntable locking nut 332, a turntable shaft 333, and a turntable baffle 334; the camera turntable base 331 is mounted on the telescopic platform 323, the turntable locking nut 332 is threadedly connected to the camera turntable base 331, the turntable shaft 333 is rotatably connected to the camera turntable base 331, and the turntable baffle 334 is fixedly connected to the lower end face of the turntable shaft 333; ... When nut 332 is tightened downwards, its bottom end contacts the upper end face of turntable shaft flange 333 and clamps turntable shaft 333 with camera turntable base 331, restricting the rotation of turntable shaft 333; when turntable locking nut 332 is rotated upwards, its bottom end disengages from contact with the upper end face of turntable shaft flange 333, releasing the rotation constraint of turntable shaft 333 by camera turntable base 331; turntable baffle 334 restricts turntable shaft from moving 333 along its axial direction.

[0122] Example 4:

[0123] Based on the above embodiment 2 or embodiment 3, a preferred structural form of the locking device 14 in the EEG acquisition unit is given.

[0124] like Figures 24-29 As shown, the locking device 14 is located at the corner between the front end and the left (or right) side of the platform body 11 to prevent the functional module from falling off. The locking device 14 includes: a locking baffle 141, a locking shaft 142, a locking support 143, a locking spring 144, and a buckle 145; wherein the locking shaft 142 is vertically arranged on the left (or right) side of the platform body 11, and its upper and lower ends are fixedly connected to the platform body 11; the locking baffle 141 is a right-angle structure and is installed at the corner between the front end and the left (or right) side of the platform body 11. The locking baffle 141 is rotatably connected to the locking shaft 142 and can rotate relative to the locking shaft 142, thereby switching between a locked state and an unlocked state.

[0125] A locking support column 143 is fixedly connected to the top of the platform body 11. The locking baffle 141 is located at the upper end of the front face of the platform body 11 and extends to the top of the platform body 11 with a limiting block. A clearance U-shaped groove is provided on the limiting block at the position corresponding to the locking support column 143. Upward protrusions are provided on both sides of the clearance U-shaped groove.

[0126] A locking spring 144 is fitted on the locking support 143. The lower end of the locking spring 144 abuts against the buckle 145 fitted on the locking support 143, and the upper end abuts against the top shoulder of the locking support 143. The buckle 145 slides with the locking support 143.

[0127] The locking spring 144 is in a pre-compressed state. In the locked state, the latch 145, under the action of the locking spring 144, abuts against the locking baffle 141, extending towards the top of the platform body 11 with a limiting block, and blocks the protruding structures on both sides of the U-shaped groove of the locking baffle 141. At this time, the locking baffle 141 cannot rotate around the locking pivot 142. When unlocking, the latch 145 is lifted by external force to move away from the locking baffle 141 and extend towards the top of the platform body 11 with a limiting block, and the latch 145 no longer abuts against the protruding structures on both sides of the U-shaped groove of the locking baffle 141, thereby releasing the constraint on the locking baffle 141, and the locking baffle 141 can rotate around the locking pivot 142.

[0128] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of the present invention do not depart from the spirit and scope of the present invention and should be covered within the scope of the claims of the present invention.

Claims

1. A portable video EEG device, characterized in that, include: Portable platform, EEG acquisition unit, and video acquisition unit; The EEG acquisition unit and the video acquisition unit are respectively connected to the portable platform; The EEG acquisition unit is worn on the head of the person being tested and acquires the person's EEG signals, and then sends the acquired EEG signals to the EEG signal processing device on the portable platform. The video acquisition unit is used to acquire video signals from the person being tested and send the acquired video signals to the video signal processing device on the portable platform. The distance between the EEG acquisition unit and the portable platform is adjustable, and the video acquisition unit can be adjusted in position and posture to ensure that its acquisition terminal is aligned with the person being tested.

2. The portable video EEG device as described in claim 1, characterized in that, The EEG acquisition unit includes: an electrode cap, an electrode wire storage wheel, electrode wires, and a signal plug; The electrode cap is worn on the head of the test subject and has an electrode cap signal interface. The electrode wire storage wheel is mounted on the portable platform, and the electrode wire is wound around the electrode wire storage wheel. The end of the electrode wire is electrically connected to a signal plug, and the other end of the electrode wire is electrically connected to the EEG signal processing device in the portable platform. By adjusting the length of the electrode wire, the distance between the portable platform and the test subject wearing the electrode cap can be adjusted. The electrode cap includes: an electrode cap body, electrode components, and an electrode cap tensioning band; a plurality of electrode components are distributed on the surface of the electrode cap body; the two ends of the electrode cap tensioning band are fixedly connected to the electrode cap body.

3. The portable video EEG device as described in claim 1, characterized in that, The electrode assembly includes: an electrode holder, an electrode cover, an electrode, and an airbag; The electrode holder is a hollow cylindrical structure with an opening at one end and a through hole at the other end. An electrode is installed inside the electrode holder and can move axially within it. The electrode is a stepped shaft with a large-diameter portion slidingly fitted into the inner hole of the electrode holder and a small-diameter portion extending out from the through hole at the end of the electrode holder. An electrode cover is installed at the open end of the electrode holder, and a through hole is provided in the center of the electrode cover. A central blind hole is machined on the end of the electrode with a large diameter portion facing the electrode cover. An air bladder is installed inside the central blind hole, and the air vent of the air bladder extends out from the central through hole of the electrode cover. By inflating the air bladder, the air bladder expands and compresses the electrode, causing the electrode to contact the surface being measured.

4. The portable video EEG device as described in claim 3, characterized in that, The electrode assembly further includes an electrode clamping assembly; the electrode clamping assembly is used to limit the position of the electrode. The electrode clamping assembly includes: a clamping seat, clamping arm A, clamping arm B, a support spring, and a shape memory alloy wire; the clamping seat surrounds the outer circumference of the electrode seat and is used to support clamping arm A and clamping arm B; clamping arm A and clamping arm B are arranged to cross each other to form a scissor structure, and their intersection is rotatably connected to the clamping seat through a rotating shaft; The front ends of clamping arms A and B are arc-shaped structures that match the outer circumference of the electrode base and are located on two opposite sides of the outer circumference of the electrode base. The inner arc surfaces of clamping arms A and B each have protruding structures. The side wall of the electrode base has through holes at positions corresponding to the protruding structures. The protruding structures can pass through the through holes at the corresponding positions to clamp the electrode and restrict its movement. A support spring is provided between the rear ends of clamping arm A and clamping arm B, and a shape memory alloy wire is also provided between the rear ends of clamping arm A and clamping arm B. The length of the shape memory alloy wire can be controlled by adjusting the temperature through electric heating.

5. The portable video EEG device as described in claim 1, characterized in that, The portable platform includes: a platform body, functional modules, a voice device, and a carrying strap; The functional modules are located within the main body of the platform; The voice device is installed on the surface of the platform body to collect the voice of the person being tested and transmit it back to the hospital monitoring terminal through the functional module inside the platform body. At the same time, it plays the prompts received from the hospital monitoring terminal, completing the voice interaction between the person being tested and the personnel at the hospital monitoring terminal. The shoulder strap is installed at the rear of the platform body.

6. The portable video EEG device as described in claim 5, characterized in that, The functional modules include functional module A, functional module B and functional module C; The functional module A includes an electroencephalogram (EEG) signal processing device, a video signal processing device, and a wireless network device. Functional module B includes a computer and a data storage device; The functional module C includes a mobile power supply and a power supply module; The three functional modules are stacked one on top of the other inside the platform body, and are electrically connected to corresponding quick interfaces inside the platform body through their respective connectors.

7. The portable video EEG device as described in claim 5 or 6, characterized in that, The portable platform is also equipped with a moving device that can be folded, collapsed, or unfolded relative to the portable platform. The mobile device includes a mobile device base, a moving link, a tension link, a transmission link, and a roller assembly; The mobile device is connected to the platform body via a mobile device base located on the back of the platform body; the mobile connecting rod is slidably connected to the mobile device base, and the tension connecting rod is inserted into the mounting hole of the mobile connecting rod and slidably connected to the mobile connecting rod. The lower end of the movable link is rotatably connected to a transmission link on each of its left and right sides. The two transmission links are arranged in a figure-eight shape, and a roller assembly is provided at the lower end of each transmission link. The roller assembly can be folded upward to a horizontal state or unfolded downward to a vertical state.

8. The portable video EEG device as described in claim 5 or 6, characterized in that, The platform body is also equipped with a locking device for limiting the position of the functional modules; The locking device includes: a locking baffle, a locking shaft, a locking support, a locking spring, and a buckle; the locking shaft is vertically installed on the side of the platform body, and its upper and lower ends are fixedly connected to the platform body; the locking baffle is a right-angle structure and is installed at the corner of the front face and the corresponding side of the platform body. The locking baffle is rotatably connected to the locking shaft and can rotate relative to the locking shaft, thereby switching between the locked state and the unlocked state. The top of the platform body is fixedly connected to a locking support column. The upper end of the locking baffle on the front face of the platform body extends to the top of the platform body with a limiting block. A clearance U-shaped groove is provided on the limiting block at the position corresponding to the locking support column. Upward protrusions are provided on both sides of the clearance U-shaped groove. A locking spring is fitted on the locking support. The lower end of the locking spring abuts against the buckle fitted on the locking support, and the upper end abuts against the top shoulder of the locking support. The buckle and the locking support slide in engagement. The locking spring is in a pre-compressed state. In the locked state, the buckle, under the action of the locking spring, abuts against the locking baffle extending towards the top of the platform body with a limit block, and blocks the protruding structures on both sides of the U-shaped groove of the locking baffle. When unlocking, the buckle is lifted so that it extends away from the locking baffle towards the top of the platform body with a limit block, and the buckle no longer abuts against the protruding structures on both sides of the U-shaped groove of the locking baffle, thereby releasing the constraint on the locking baffle.

9. The portable video EEG device as described in claim 1, characterized in that, The video acquisition unit includes: a flip component, a telescopic component, a camera turntable, and a camera component; The camera turntable is installed on the side of the platform body in sequence via a telescopic component and a flipping component; wherein the flipping component is directly connected to the platform body, the telescopic component is rotatably connected to the flipping component, the camera turntable is set at the telescopic end of the telescopic component, and the camera component is rotatably connected to the camera turntable.

10. The portable video EEG device as described in claim 8, characterized in that, The telescopic assembly includes a telescopic support, a telescopic platform, and a telescopic rod; the telescopic support is rotatably connected to the flipping platform of the flipping assembly, one end of the telescopic rod is rotatably connected to the telescopic support via a lug, and the other end is rotatably connected to the telescopic platform via a lug; the camera turntable is mounted on the telescopic platform. The telescopic assembly includes two telescopic rods; the two telescopic rods, the telescopic support, and the telescopic platform form a trapezoidal structure, wherein the two telescopic rods are the two sides of the trapezoidal structure; a tensioner is provided on the telescopic support corresponding to each telescopic rod, and a tension rope is provided on each tensioner; the two tension ropes are arranged crosswise, one end of the tension rope is wrapped inside the corresponding tensioner, and the other end is fixedly connected to the telescopic platform.

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