Rotatable calibration auxiliary device for eye tracker

Abstract

The utility model discloses a rotatable calibration auxiliary device for eye tracker relates to eye tracker calibration auxiliary device technical field. The rotatable calibration auxiliary device for eye tracker, including support base, fixedly connected with fixed column on the support base, be provided with the support plate on the support base, the support plate bottom fixedly connected with the adjusting block, the adjusting block bottom is provided with the drive unit, be provided with helmet on the support plate, the helmet is provided with the tightening unit, and the tightening unit is used for fixing head. The rotatable calibration auxiliary device for eye tracker adopts the structure that the helmet helps the kid to fix the head, is provided with the tightening unit in the helmet, and the tightening unit is convenient for fixing the head of different head circumference kid and the helmet, can guarantee the head stability when eye tracker calibration, on one hand alleviates the work load of staff, on the other hand improves the success rate of calibration.

Description

Technical Field

[0001] This utility model relates to the technical field of eye tracker calibration auxiliary devices, specifically a rotatable calibration auxiliary device for eye trackers. Background Technology

[0002] In today's highly digitalized world, eye-tracking technology is widely used in many fields such as psychological research, human-computer interaction design, and marketing. However, the accuracy of eye trackers depends on calibration, and traditional calibration methods are inefficient. As a result, eye tracker calibration aids have emerged to help research and applications in various fields reach new heights.

[0003] Existing eye tracker calibration aids mostly consist of a lifting mechanism and a support plate working together. The lifting mechanism moves the support plate up and down to a suitable position, and the support plate supports the user's head, effectively reducing user fatigue. During eye tracker calibration, the user's head must remain still while their eyes track the pattern on the display screen to achieve the calibration purpose. However, for children, it is difficult to ensure their heads remain still during calibration. This increases the workload for staff supervision and leads to inaccurate calibration, resulting in repeated calibrations and wasted time. To address the shortcomings of existing technology, this invention provides a rotatable calibration aid for eye trackers to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a rotatable calibration auxiliary device for eye trackers, which solves the problem of inaccurate calibration caused by head shaking when children use eye trackers for calibration.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a rotatable calibration auxiliary device for an eye tracker, including a support base, a fixed column fixedly connected to the support base, a support plate provided on the support base, an adjustment block fixedly connected to the bottom of the support plate, a drive unit provided at the bottom of the adjustment block, a helmet provided on the support plate, and a tightening unit provided on the helmet for fixing the head;

[0006] The tightening unit includes:

[0007] The spring is fixedly connected to the inner wall of the helmet;

[0008] The control block is rotatably connected to the front of the mainspring.

[0009] Preferably, the driving unit is used to drive the adjustment block;

[0010] The driving unit includes:

[0011] A servo motor is located at the bottom of the support base;

[0012] A threaded rod, one end of which is fixedly connected to the output end of a servo motor, is threadedly connected to an adjusting block.

[0013] Preferably, a second connecting block is fixedly connected to the bottom of the support plate, and a second circular sleeve is fixedly connected to the end of the second connecting block away from the adjusting block, and the second circular sleeve is slidably connected to the fixed column.

[0014] Preferably, a first connecting block is fixedly connected to the helmet, and a first circular sleeve is fixedly connected to the end of the first connecting block away from the helmet. The first circular sleeve is slidably connected to the fixed post, and a threaded hole is provided on the first circular sleeve.

[0015] Preferably, a fixing plate is fixedly connected to the support base, and the servo motor is mounted on the fixing plate.

[0016] Preferably, a sponge pad is fixedly connected to the support plate.

[0017] Preferably, a storage basket is fixedly connected to the top of the fixed column.

[0018] Preferably, the support base is equipped with an eye tracker camera unit and a display screen.

[0019] This utility model discloses a rotatable calibration auxiliary device for eye trackers, which has the following beneficial effects: The rotatable calibration auxiliary device for eye trackers adopts a helmet structure to help children fix their heads. The helmet is equipped with a tightening unit, which makes it easy to fix the heads of children with different head sizes to the helmet. During eye tracker calibration, it can ensure head stability, which reduces the workload of staff and improves the success rate of calibration. At the same time, the drive unit and the support plate work together to facilitate the lifting of the user's head. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the support plate structure of this utility model;

[0023] Figure 3This is a schematic diagram of the tightening unit structure of this utility model.

[0024] In the diagram: 1. Support base; 11. Eye tracker camera unit; 12. Display screen; 13. Fixing plate; 2. Fixing column; 21. Storage basket; 3. Support plate; 31. Sponge pad; 32. Adjusting block; 33. Second connecting block; 34. Second circular sleeve; 4. Drive unit; 41. Servo motor; 42. Threaded rod; 5. Helmet; 51. First connecting block; 52. First circular sleeve; 521. Threaded hole; 6. Tightening unit; 61. Spring; 62. Control block. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] This application provides a rotatable calibration auxiliary device for eye trackers, which solves the problem of inaccurate calibration caused by head shaking when children use eye trackers. It achieves a structure in which a helmet 5 helps to fix the child's head. The helmet 5 is equipped with a tightening unit 6, which makes it easy to fix the head of children with different head sizes to the helmet 5. During eye tracker calibration, the head can be kept stable, which reduces the workload of the staff and improves the success rate of calibration. At the same time, the drive unit 4 and the support plate 3 work together to support the user's head.

[0027] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0028] Example 1;

[0029] This utility model discloses a rotatable calibration auxiliary device for an eye tracker, according to the attached... Figure 1-3 As shown, it includes a support base 1, a fixed column 2 fixedly connected to the support base 1, a support plate 3 provided on the support base 1, an adjustment block 32 fixedly connected to the bottom of the support plate 3, a drive unit 4 provided at the bottom of the adjustment block 32, a helmet 5 provided on the support plate 3, and a tightening unit 6 provided on the helmet 5 for fixing the head.

[0030] Tightening unit 6 includes:

[0031] The spring 61 is fixedly connected to the inner wall of the helmet 5;

[0032] Control block 62, which is rotatably connected to the front of spring 61.

[0033] Drive unit 4 is used to drive adjustment block 32;

[0034] Drive unit 4 includes:

[0035] Servo motor 41 is located at the bottom of support base 1;

[0036] The threaded rod 42 has one end fixedly connected to the output end of the servo motor 41, and the threaded rod 42 is threadedly connected to the adjusting block 32.

[0037] A second connecting block 33 is fixedly connected to the bottom of the support plate 3. A second round sleeve 34 is fixedly connected to the end of the second connecting block 33 away from the adjusting block 32. The second round sleeve 34 is slidably connected to the fixed column 2.

[0038] A first connecting block 51 is fixedly connected to the helmet 5. A first round sleeve 52 is fixedly connected to the end of the first connecting block 51 away from the helmet 5. The first round sleeve 52 is slidably connected to the fixed post 2. A threaded hole 521 is provided on the first round sleeve 52.

[0039] A fixing plate 13 is fixedly connected to the support base 1, and the servo motor 41 is mounted on the fixing plate 13.

[0040] A sponge pad 31 is fixedly connected to the support plate 3. The sponge pad 31 is designed to rest against the user's chin to support the user's head.

[0041] A storage basket 21 is fixedly connected to the top of the fixed column 2, which facilitates the storage of the helmet 5.

[0042] When the user needs to calibrate the eye tracker, the servo motor 41 is first started to drive the threaded rod 42 fixedly connected to it to rotate. The threaded rod 42 is threadedly connected to the adjustment block 32, thereby driving the adjustment block 32 to move. During this process, the second sleeve 34 slides on the fixed post 2. When the adjustment block 32 moves to a height suitable for the user, the servo motor 41 stops rotating. The user puts their chin against the sponge pad 31 fixedly connected to the support plate 3 to support the user's head.

[0043] When it is necessary to use the helmet 5 to fix the user's head, first unscrew the bolt in the threaded hole 521 to release the limit of the helmet 5, move the helmet 5 to the user's head, tighten the spring 61 by rotating the control block 62 clockwise, and finally use the bolt to fix the first round sleeve 52 to the fixed post 2, and the eye tracker calibration can begin. During the eye tracker calibration, the head can be kept stable, which reduces the workload of the staff and improves the success rate of the calibration.

[0044] Example 2;

[0045] This utility model discloses a rotatable calibration auxiliary device for an eye tracker, according to the attached... Figure 1-3 As shown, it includes a support base 1, a fixed column 2 fixedly connected to the support base 1, a support plate 3 provided on the support base 1, an adjustment block 32 fixedly connected to the bottom of the support plate 3, a drive unit 4 provided at the bottom of the adjustment block 32, a helmet 5 provided on the support plate 3, and a tightening unit 6 provided on the helmet 5 for fixing the head.

[0046] Tightening unit 6 includes:

[0047] The spring 61 is fixedly connected to the inner wall of the helmet 5;

[0048] Control block 62, which is rotatably connected to the front of spring 61.

[0049] The support base 1 is equipped with an eye tracker camera unit 11 and a display screen 12.

[0050] The eye tracker uses a rotatable calibration aid to fix the user's head. The core principle is to establish a mapping relationship between the position of the eyeball and 12 gaze points on the display screen. The eye tracker calibration is carried out in three steps: presenting known calibration points, collecting eyeball feature data, and establishing a mapping model, to convert biosignals into usable gaze point information.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A rotatable calibration aid for an eye tracker, comprising a support base (1), characterized in that, A fixed column (2) is fixedly connected to the support base (1), a support plate (3) is provided on the support base (1), an adjustment block (32) is fixedly connected to the bottom of the support plate (3), a drive unit (4) is provided at the bottom of the adjustment block (32), a helmet (5) is provided on the support plate (3), and a tightening unit (6) is provided on the helmet (5) to fix the head; The tightening unit (6) includes: The spring (61) is fixedly connected to the inner wall of the helmet (5); The control block (62) is rotatably connected to the front of the spring (61).

2. The rotatable calibration auxiliary device for an eye tracker according to claim 1, characterized in that, The driving unit (4) is used to drive the adjusting block (32); The driving unit (4) includes: A servo motor (41) is located at the bottom of the support base (1); A threaded rod (42) is fixedly connected at one end to the output end of a servo motor (41), and the threaded rod (42) is threadedly connected to the adjusting block (32).

3. The rotatable calibration auxiliary device for an eye tracker according to claim 2, characterized in that, The support plate (3) is fixedly connected to a second connecting block (33) at its bottom. The end of the second connecting block (33) away from the adjusting block (32) is fixedly connected to a second round sleeve (34). The second round sleeve (34) is slidably connected to the fixed column (2).

4. The rotatable calibration auxiliary device for an eye tracker according to claim 1, characterized in that, A first connecting block (51) is fixedly connected to the helmet (5). A first round sleeve (52) is fixedly connected to the end of the first connecting block (51) away from the helmet (5). The first round sleeve (52) is slidably connected to the fixed post (2). A threaded hole (521) is provided on the first round sleeve (52).

5. A rotatable calibration auxiliary device for an eye tracker according to claim 3, characterized in that, A fixing plate (13) is fixedly connected to the support base (1), and the servo motor (41) is mounted on the fixing plate (13).

6. A rotatable calibration auxiliary device for an eye tracker according to claim 5, characterized in that, A sponge pad (31) is fixedly connected to the support plate (3).

7. The rotatable calibration auxiliary device for an eye tracker according to claim 1, characterized in that, A storage basket (21) is fixedly connected to the top of the fixed column (2).

8. The rotatable calibration auxiliary device for an eye tracker according to claim 1, characterized in that, The support base (1) is provided with an eye tracker camera unit (11) and a display screen (12).

Images