An eye movement cognitive assessment device

Abstract

The utility model relates to the field of eye movement cognitive evaluation, and specifically relates to an eye movement cognitive evaluation device, which comprises a first supporting arm, a second supporting arm, a third supporting arm and an evaluation host computer connected in turn. A first belt shaft motor is connected at the connecting joint of the first supporting arm and the second supporting arm, a second belt shaft motor is connected at the connecting joint of the second supporting arm and the third supporting arm, and a third belt shaft motor is connected at the connecting joint of the third supporting arm and the evaluation host computer. It can replace manual adjustment through electric adjustment, saving time and effort.

Description

Technical Field

[0001] This utility model relates to the field of eye movement cognitive assessment, and more specifically, to an eye movement cognitive assessment device. Background Technology

[0002] With the development of medical technology, eye-tracking cognitive assessment has gradually become an important diagnostic tool. Currently, eye-tracking cognitive assessment devices are mainly used to assess a patient's visual attention, cognitive abilities, and the state of certain neurological disorders. These devices typically include cameras, displays, and other sensors capable of capturing and analyzing the patient's eye movements.

[0003] In current eye-tracking cognitive assessment processes, the adjustment of the assessment device typically requires manual intervention. Specifically, doctors or technicians need to manually adjust the device's position, angle, and focal length to ensure accurate capture of the patient's eye movements. This process is not only functionally limited but also inconvenient to adjust, requiring significant time and effort. Furthermore, manual adjustment makes it difficult to guarantee consistency and accuracy across assessments, thus affecting the reliability of the results. Utility Model Content

[0004] The purpose of this invention is to provide an eye-tracking cognitive assessment method that can replace manual adjustment with electric adjustment, saving time and effort.

[0005] The technical solution of this utility model is implemented as follows: An eye-tracking cognitive assessment device includes a first arm, a second arm, a third arm, and an assessment host that are hinged together in sequence. A first shaft motor is connected to the joint connecting the first arm and the second arm, a second shaft motor is connected to the joint connecting the second arm and the third arm, and a third shaft motor is connected to the joint connecting the third arm and the evaluation host.

[0006] Furthermore, it also includes a support column, one end of the first support arm is hinged to one end of the support column, and a fourth shaft motor is connected to the joint between the first support arm and the support column.

[0007] Furthermore, one end of the first support arm is provided with a first protrusion, and one end of the support column is provided with a first U-shaped part. The first U-shaped part has a first limiting groove, and the first protrusion is located in the first limiting groove. The fourth shaft motor is fixed on the outside of the first U-shaped part, and the output shaft of the fourth shaft motor passes through the first U-shaped part and the first protrusion and is keyed to the first protrusion through a flat key.

[0008] Furthermore, a second U-shaped portion is provided at the other end of the first support arm, the second U-shaped portion having a second limiting groove, a third U-shaped portion is provided at one end of the second support arm, the third U-shaped portion having a third limiting groove, and the width of the second U-shaped portion is not greater than the width of the third limiting groove, the width of the third U-shaped portion is not greater than the width of the second limiting groove, a first center block is provided at the opening of the second limiting groove and the third limiting groove, and two first shaft motors are provided, namely a first shaft motor A and a first shaft motor B; The first shaft motor A is fixed to the outside of the second U-shaped part, and the output shaft of the first shaft motor A passes through the second U-shaped part and the first center block and is keyed to the first center block via a flat key; The first shaft motor B is fixed to the outside of the third U-shaped part, and the output shaft of the first shaft motor B passes through the third U-shaped part and the first center block and is keyed to the first center block via a flat key.

[0009] Furthermore, a fourth U-shaped portion is provided at the other end of the second support arm, the fourth U-shaped portion having a fourth limiting groove, a fifth U-shaped portion is provided at one end of the third support arm, the fifth U-shaped portion having a fifth limiting groove, and the width of the fourth U-shaped portion is not greater than the width of the fifth limiting groove, the width of the fifth U-shaped portion is not greater than the width of the fourth limiting groove, a second center block is provided at the opening of the fourth limiting groove and the fifth limiting groove, and two second shaft motors are provided, namely a second shaft motor A and a second shaft motor B; The second shaft motor A is fixed to the outside of the fourth U-shaped part, and the output shaft of the second shaft motor A passes through the fourth U-shaped part and the second center block and is keyed to the second center block via a flat key; The second shaft motor B is fixed to the outside of the fifth U-shaped part, and the output shaft of the second shaft motor B passes through the fifth U-shaped part and the second center block and is keyed to the second center block via a flat key.

[0010] Furthermore, it also includes a connecting part, which is provided on the back of the evaluation host, and the evaluation host is fixedly connected to the connecting part by screws.

[0011] Furthermore, the other end of the third arm is provided with a second protrusion, the connecting part is provided with a sixth U-shaped part, the sixth U-shaped part has a sixth limiting groove, the second protrusion is located in the sixth limiting groove, the third shaft motor is fixed on the outside of the sixth U-shaped part, the output shaft of the third shaft motor passes through the sixth U-shaped part and the second protrusion and is keyed to the second protrusion through a flat key.

[0012] Furthermore, the first shaft motor, the second shaft motor, the third shaft motor, and the fourth shaft motor are all shaft motors of the same model.

[0013] Furthermore, it also includes a controller, to which all of the shafted motors are electrically connected.

[0014] Furthermore, the second U-shaped portion is the same as the third U-shaped portion.

[0015] Compared with the prior art, the beneficial effects of this utility model are: This application provides an eye-tracking cognitive assessment device, comprising a first arm, a second arm, a third arm, and an assessment host that are sequentially hinged together. A first shaft motor is connected to the joint connecting the first arm and the second arm; a second shaft motor is connected to the joint connecting the second arm and the third arm; and a third shaft motor is connected to the joint connecting the third arm and the assessment host. The end of the first arm furthest from the second arm can serve as a fixed fulcrum. The first shaft motor drives the second arm to rotate around the first arm by a certain angle, the second shaft motor drives the third arm to rotate around the second arm by a certain angle, and the third shaft motor drives the assessment host to rotate around the third arm by a certain angle. By using multiple shaft motors to drive the rotation of each arm and the assessment host, manual adjustment is replaced, thereby presenting the assessment device terminal to the patient at the optimal angle and distance. The entire device is motor-driven and automatically adjusts the appropriate angle and distance according to the patient's position, improving efficiency, enhancing intelligence, and saving time and effort. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the eye-tracking cognitive assessment device of this utility model; Figure 2 This is a cross-sectional view of the joint connecting the support column and the first arm of this utility model. Figure 3 This is a cross-sectional view of the joint connecting the first and second arms of this utility model. Figure 4 This is a cross-sectional view of the joint connecting the third arm and the evaluation host of this utility model.

[0018] In the picture: 1-First arm; 101-First protrusion; 102-Second U-shaped part; 2-Second arm; 201-Third U-shaped section; 202-Fourth U-shaped section; 3-Third arm; 301-Fifth U-shaped part; 302-Second protrusion; 4-Support column; 401-First U-shaped part; 5-Evaluation host; 501-Connector; 5011-Sixth U-shaped part; 601 - First shaft motor A; 602 - First shaft motor B; 701 - Second shaft motor A; 702 - Second shaft motor B; 8 - Third shaft motor; 9 - Fourth shaft motor; 10-First center block; 11-Second center block; 12-Flat key; 13-Screw; 14-Screw. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0026] Example Eye-tracking cognitive assessment is a technique used to measure and analyze eye movements, primarily for studying and evaluating an individual's cognitive processes. This assessment typically involves recording and analyzing eye movements using specialized equipment, such as rapid eye movements (saccades), the ability to track moving objects, and the duration of fixation on a specific point.

[0027] Application scenarios of eye-tracking cognitive assessment: 1. Clinical Diagnosis: Used to assist in the diagnosis of various neurological diseases, such as Alzheimer's disease and Parkinson's disease. By observing the patient's eye movement patterns, doctors can better understand the progression and impact of the disease.

[0028] 2. Psychological research: This studies attention allocation, memory, and decision-making in human cognitive processes. For example, reading comprehension ability can be analyzed by recording eye movements during reading.

[0029] 3. User Experience Research: In the field of human-computer interaction, this involves evaluating users' eye movements when using a certain interface or device in order to optimize design and improve user experience.

[0030] Evaluation process: 1. Preparation phase: The patient sits in front of the device, which will perform initial calibration to ensure the accuracy of the captured eye movement data.

[0031] 2. Testing phase: Patients complete specific tasks according to instructions, such as tracking a moving light spot on a screen or reading a passage of text.

[0032] 3. Analysis phase: The device records and analyzes eye movement data, generating detailed reports for use by doctors or researchers.

[0033] An eye-tracking cognitive assessment device is a tool used to measure and analyze human eye movements to assess cognitive function. Such devices typically combine hardware (such as cameras or other sensors) and software (such as image processing and analysis algorithms) to infer an individual's cognitive state or abilities by capturing eye movements.

[0034] In summary, this embodiment provides an eye-tracking cognitive assessment device, which aims to quickly present the assessment host 5 of the eye-tracking cognitive assessment device terminal to the patient. Its specific structure is as follows: It includes a first arm 1, a second arm 2, a third arm 3, and an evaluation host 5, which are hinged in sequence. A first shaft motor is connected to the joint connecting the first support arm 1 and the second support arm 2; a second shaft motor is connected to the joint connecting the second support arm 2 and the third support arm 3; and a third shaft motor 8 is connected to the joint connecting the third support arm 3 and the evaluation host 5. It also includes a support column 4, one end of the first support arm 1 is hinged to one end of the support column 4, and a fourth shaft motor 9 is connected to the joint between the first support arm 1 and the support column 4. The other end of the support column 4 (the end away from the first support arm 1) can be used as a fixed fulcrum to fix it in a specific position.

[0035] The following describes the specific structure of the joint connecting the first arm 1 and the support column 4: like Figure 1 and Figure 2As shown, one end of the first support arm 1 is provided with a first protrusion 101, and one end of the support column 4 is provided with a first U-shaped portion 401. The first U-shaped portion 401 has a first limiting groove, and the first protrusion 101 is located within the first limiting groove. The fourth shaft motor 9 is fixed to the outside of the first U-shaped portion 401 and connected by screws 13. The output shaft of the fourth shaft motor 9 passes through the first U-shaped portion 401 and the first protrusion 101 and is keyed to the first protrusion 101 via a flat key 12. When the fourth shaft motor 9 is running, it drives the first support arm 1 to rotate within the first limiting groove through its output shaft. At the joint connecting the first support arm 1 and the support column 4, the rotation range of the first support arm 1 is not less than 180°, which is a large rotation range.

[0036] The following describes the specific structure of the joint connecting the first arm 1 and the second arm 2: like Figure 1 and Figure 3 As shown, a second U-shaped portion 102 is provided at the other end of the first support arm 1, the second U-shaped portion 102 has a second limiting groove, a third U-shaped portion 201 is provided at one end of the second support arm 2, the third U-shaped portion 201 has a third limiting groove, and the width of the second U-shaped portion 102 is not greater than the width of the third limiting groove, the width of the third U-shaped portion 201 is not greater than the width of the second limiting groove, a first center block 10 is provided at the opening of the second limiting groove and the third limiting groove, and two first shaft motors are provided, namely a first shaft motor A601 and a first shaft motor B602; The first shaft motor A601 is fixed to the outside of the second U-shaped part 102 and connected by screw 13. The output shaft of the first shaft motor A601 passes through the second U-shaped part 102 and the first center block 10 and is connected to the first center block 10 by a flat key 12. The first shaft motor B602 is fixed to the outside of the third U-shaped part 201 and connected by screws 13. The output shaft of the first shaft motor B602 passes through the third U-shaped part 201 and the first center block 10 and is keyed to the first center block 10 by a flat key 12.

[0037] When the first arm 1 and the second arm 2 are in their initial positions, the axial direction of the first arm 1 is the same as that of the second arm 2. The second U-shaped part 102 and the third U-shaped part 201 are intersected. The axial direction of the output shaft of the first shaft motor A601 is perpendicular to the axial direction of the output shaft of the first shaft motor B602. When the first shaft motor A601 is running, the output shaft of the first shaft motor A601 drives the first center block 10. The first center block 10 abuts against the inner wall of the third limiting groove and drives the third U-shaped part 201. Then, the third U-shaped part 201 rotates in the second limiting groove, thereby driving the rotation of the second arm 2. At this time, the rotation direction of the second arm 2 is around the output shaft of the first shaft motor A601, and the rotation range of the second arm 2 in this direction is not less than 180°. Based on this, when it is necessary to start the first shaft motor B602, the first shaft motor B602 is first started. Machine A601 operates and returns the second arm 2 to its initial position. Then, the first shaft motor B602 is started. The output shaft of the first shaft motor B602 also drives the first center block 10. The first center block 10 abuts against the inner wall of the second limiting groove and causes the second U-shaped part 102 to rotate relative to it in the third limiting groove. Therefore, the output shaft of the first shaft motor B602 drives the second U-shaped part 102 to rotate relative to it in the third limiting groove. Since the first arm 1 is fixed at this time, it drives the second arm 2 to rotate. At this time, the rotation direction of the second arm 2 is around the output shaft of the first shaft motor B602, and the rotation range of the second arm 2 in this direction is not less than 180°. Based on this, when it is necessary to start the first shaft motor A601, the first shaft motor B602 is returned to its initial position, and the first shaft motor A601 can be restarted. Therefore, by using the first shaft motor A601 and the first shaft motor B602 together, the second arm 2 can rotate arbitrarily in these two directions, with a large rotation range.

[0038] The following describes the specific structure of the joint connecting the second arm 2 and the third arm 3: like Figure 1 As shown, a fourth U-shaped portion 202 is provided at the other end of the second support arm 2, the fourth U-shaped portion 202 having a fourth limiting groove, a fifth U-shaped portion 301 is provided at one end of the third support arm 3, the fifth U-shaped portion 301 having a fifth limiting groove, and the width of the fourth U-shaped portion 202 is not greater than the width of the fifth limiting groove, the width of the fifth U-shaped portion 301 is not greater than the width of the fourth limiting groove, a second center block 11 is provided at the opening of the fourth limiting groove and the fifth limiting groove, and two second shaft motors are provided, namely a second shaft motor A701 and a second shaft motor B702; The second shaft motor A701 is fixed to the outside of the fourth U-shaped part 202 and connected by screw 13. The output shaft of the second shaft motor A701 passes through the fourth U-shaped part 202 and the second center block 11 and is connected to the second center block 11 by a flat key 12. The second shaft motor B702 is fixed to the outside of the fifth U-shaped part 301 and connected by screw 13. The output shaft of the second shaft motor B702 passes through the fifth U-shaped part 301 and the second center block 11 and is keyed to the second center block 11 by a flat key 12.

[0039] When the second arm 2 and the third arm 3 are in their initial positions, the axial direction of the second arm 2 is the same as that of the third arm 3. The fourth U-shaped part 202 and the fifth U-shaped part 301 are intersected. The axial direction of the output shaft of the second shaft motor A701 is perpendicular to the axial direction of the output shaft of the second shaft motor B702. When the second shaft motor A701 is running, the output shaft of the second shaft motor A701 drives the second center block 11. The second center block 11 abuts against the inner wall of the fourth limiting groove and causes the fourth U-shaped part 202 to rotate relative to the fifth limiting groove. Therefore, the output shaft of the second shaft motor A701 drives the fourth U-shaped part 202 to rotate relative to the fifth limiting groove. Since the second arm 2 is fixed at this time, it drives the rotation of the third arm 3. At this time, the rotation direction of the third arm 3 is around the output shaft of the second shaft motor A701, and the rotation range of the third arm 3 in this direction is not less than 180°. Based on this, when it is necessary to start the second shaft motor B702, first run the second shaft motor A701 and return the third support arm 3 to its initial position, then start the second shaft motor B702. The output shaft of the second shaft motor B702 drives the second center block 11, which abuts against the inner wall of the fifth limiting groove and drives the fifth U-shaped part 301. Then the fifth U-shaped part 301 rotates in the fourth limiting groove. Therefore, the output shaft of the second shaft motor B702 drives the fifth U-shaped part 301 to rotate in the fourth limiting groove, thereby driving the rotation of the third support arm 3. At this time, the rotation direction of the third support arm 3 is around the output shaft of the second shaft motor B702, and the rotation range of the third support arm 3 in this direction is not less than 180°. Based on this, when it is necessary to start the second shaft motor A701, return the second shaft motor B702 to its initial position, and the second shaft motor A701 can be restarted. Therefore, by using the second shaft motor A701 and the second shaft motor B702 together, the third arm 3 can rotate arbitrarily in these two directions, with a large rotation range.

[0040] The following describes the specific structure of the connection joint between the third arm 3 and the evaluation host 5: Reference Figure 1 and Figure 4The evaluation host 5 has a connecting part 501 on its back, and the evaluation host 5 is fixedly connected to the connecting part 501 by screws 14.

[0041] The other end of the third support arm 3 is provided with a second protrusion 302, and the connecting part 501 is provided with a sixth U-shaped part 5011. The sixth U-shaped part 5011 has a sixth limiting groove. The second protrusion 302 is located in the sixth limiting groove. The third shaft motor 8 is fixed to the outside of the sixth U-shaped part 5011. The output shaft of the third shaft motor 8 passes through the sixth U-shaped part 5011 and the second protrusion 302 and is keyed to the second protrusion 302 via a flat key 12. When the third shaft motor 8 is running, it drives the second protrusion 302 to rotate in the sixth limiting groove, thereby driving the rotation of the evaluation host 5. At the joint connecting the third support arm 3 and the evaluation host 5, the rotation range of the evaluation host 5 is not less than 180°, which is a large rotation range.

[0042] The first arm 1, the second arm 2, and the third arm 3 can each be made of round rods.

[0043] It should be noted that the first shaft-mounted motor, the second shaft-mounted motor, the third shaft-mounted motor 8, and the fourth shaft-mounted motor 9 are all of the same model to facilitate unified procurement of shaft-mounted motors and rapid overall assembly. A shaft-mounted motor (also known as a shaft-mounted motor or internal shaft motor) is a special type of motor whose characteristic is that the motor shaft itself is part of the mechanical structure and can be directly mounted on the component that needs to rotate or move. This design allows the motor to directly drive the rotating component, reducing transmission links and improving efficiency and reliability.

[0044] In this embodiment, the eye-tracking cognitive assessment device also includes a controller. All the shafted motors are electrically connected to the controller. The controller controls all the shafted motors separately. Combined with the image processing and analysis algorithms in the software (note: the software part is a supplementary explanation of this solution and is not within the scope of structural protection), the controller controls the operation of each shafted motor to automatically present the assessment host 5 in front of the patient and automatically adjust the appropriate angle and distance according to the patient's position, thereby improving efficiency, increasing intelligence, and saving time and effort.

[0045] Compared to traditional manual adjustment methods, the eye-tracking cognitive assessment device provided in this application has a higher degree of automation. It can automatically adjust the terminal assessment host 5 to the optimal distance and position for the patient through a motor and control system, which not only improves efficiency but also allows for personalized adjustments based on the patient's specific situation.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

[0047] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An eye-tracking cognitive assessment device, characterized in that, It includes a first arm (1), a second arm (2), a third arm (3) and an evaluation host (5) that are hinged in sequence. A first shaft motor is connected at the joint between the first arm (1) and the second arm (2), a second shaft motor is connected at the joint between the second arm (2) and the third arm (3), and a third shaft motor (8) is connected at the joint between the third arm (3) and the evaluation host (5).

2. The eye-tracking cognitive assessment device according to claim 1, characterized in that, It also includes a support column (4), one end of the first support arm (1) is hinged to one end of the support column (4), and a fourth shaft motor (9) is connected at the joint between the first support arm (1) and the support column (4).

3. The eye-tracking cognitive assessment device according to claim 2, characterized in that, One end of the first support arm (1) is provided with a first protrusion (101), and one end of the support column (4) is provided with a first U-shaped part (401). The first U-shaped part (401) has a first limiting groove. The first protrusion (101) is located in the first limiting groove. The fourth shaft motor (9) is fixed on the outside of the first U-shaped part (401). The output shaft of the fourth shaft motor (9) passes through the first U-shaped part (401) and the first protrusion (101) and is keyed to the first protrusion (101) by a flat key (12).

4. The eye-tracking cognitive assessment device according to claim 1, characterized in that, The other end of the first support arm (1) is provided with a second U-shaped part (102), the second U-shaped part (102) has a second limiting groove, one end of the second support arm (2) is provided with a third U-shaped part (201), the third U-shaped part (201) has a third limiting groove, and the width of the second U-shaped part (102) is not greater than the width of the third limiting groove, the width of the third U-shaped part (201) is not greater than the width of the second limiting groove, the opening of the second limiting groove and the third limiting groove are jointly provided with a first center block (10), and the first shaft motor is provided with two motors, namely the first shaft motor A (601) and the first shaft motor B (602). The first shaft motor A (601) is fixed to the outside of the second U-shaped part (102), and the output shaft of the first shaft motor A (601) passes through the second U-shaped part (102) and the first center block (10) and is keyed to the first center block (10) via a flat key (12); The first shaft motor B (602) is fixed to the outside of the third U-shaped part (201), and the output shaft of the first shaft motor B (602) passes through the third U-shaped part (201) and the first center block (10) and is keyed to the first center block (10) by a flat key (12).

5. The eye-tracking cognitive assessment device according to claim 1, characterized in that, The other end of the second support arm (2) is provided with a fourth U-shaped part (202), the fourth U-shaped part (202) has a fourth limiting groove, one end of the third support arm (3) is provided with a fifth U-shaped part (301), the fifth U-shaped part (301) has a fifth limiting groove, and the width of the fourth U-shaped part (202) is not greater than the width of the fifth limiting groove, the width of the fifth U-shaped part (301) is not greater than the width of the fourth limiting groove, the fourth limiting groove and the fifth limiting groove are provided with a second center block (11) at the groove opening, and the second shaft motor is provided with two motors, namely the second shaft motor A (701) and the second shaft motor B (702). The second shaft motor A (701) is fixed to the outside of the fourth U-shaped part (202), and the output shaft of the second shaft motor A (701) passes through the fourth U-shaped part (202) and the second center block (11) and is keyed to the second center block (11) by a flat key (12); The second shaft motor B (702) is fixed to the outside of the fifth U-shaped part (301), and the output shaft of the second shaft motor B (702) passes through the fifth U-shaped part (301) and the second center block (11) and is keyed to the second center block (11) by a flat key (12).

6. The eye-tracking cognitive assessment device according to claim 1, characterized in that, It also includes a connecting part (501), which is provided on the back of the evaluation host (5), and the evaluation host (5) and the connecting part (501) are fixedly connected by screws (14).

7. The eye-tracking cognitive assessment device according to claim 6, characterized in that, The other end of the third arm (3) is provided with a second protrusion (302), and the connecting part (501) is provided with a sixth U-shaped part (5011). The sixth U-shaped part (5011) has a sixth limiting groove. The second protrusion (302) is located in the sixth limiting groove. The third shaft motor (8) is fixed on the outside of the sixth U-shaped part (5011). The output shaft of the third shaft motor (8) passes through the sixth U-shaped part (5011) and the second protrusion (302) and is keyed to the second protrusion (302) by a flat key (12).

8. The eye-tracking cognitive assessment device according to claim 2, characterized in that, The first shaft motor, the second shaft motor, the third shaft motor (8) and the fourth shaft motor (9) are all shaft motors of the same model.

9. The eye-tracking cognitive assessment device according to claim 8, characterized in that, It also includes a controller, and all of the shafted motors are electrically connected to the controller.

10. The eye-tracking cognitive assessment device according to claim 4, characterized in that, The second U-shaped portion (102) is the same as the third U-shaped portion (201).

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