Equipment for automated field-of-view testing of ice and snow helmets

Abstract

This invention relates to the field of helmet visual field technology, and particularly to equipment for automated visual field testing of ice and snow helmets. The base plate has two connecting plates, one front and one rear, at its top. An f-slide groove is formed on the inner side of each connecting plate, and a pressure plate is slidably connected to the inner side of the f-slide groove. The pressure plate is fixed in position on the f-slide groove by a screw and nut assembly. The helmet is installed by the close pressing of the two pressure plates. In use, the helmet is mounted on the connecting plates via the pressure plates. The connecting plates are reinforced with screws and connected to the end of the spindle of a B-stepper motor. After installation, the B-stepper motor can drive the helmet to rotate at an angle. An encoder is provided at the bottom of the helmet, and a B-stepper motor is fixedly connected to the top of the encoder. A diffuse reflection laser is fixedly connected to the top of the B-stepper motor. The diffuse reflection laser is movably positioned inside the helmet, and the B-stepper motor can drive the diffuse reflection laser to move inside the helmet.

Description

Technical Field

[0001] This invention relates to the field of helmet field of vision technology, specifically to equipment for automated field of vision testing of ice and snow helmets. Background Technology

[0002] In many high-risk sports, athletes use helmets to ensure their safety. While helmets may look similar, factors such as the height of the rim and the horizontal distance between the rims significantly affect an athlete's field of vision. Visual field testing has revealed that the main factors influencing a subject's field of vision are the vertical and horizontal visual field limits. In competitive or confrontational sports, visual field is a crucial factor affecting athletes' performance.

[0003] Therefore, coaches often manually measure the horizontal, vertical, and angular distances of the front edge of helmets using a ruler. Manual measurement has drawbacks such as high error rates, lack of scientific rigor, tediousness, and high time and manpower consumption. Therefore, developing an auxiliary device to help coaches and athletes manually measure the helmet's field of vision would not only reduce errors and improve the scientific accuracy of manual measurements, but also provide helmet manufacturers with an automated system for testing helmet performance and helmet designers with a tool to design key reference parameters for helmets.

[0004] For example, a helmet vision tester with patent number CN201922494833.9 has the advantage of using a precise angle encoder, which has high accuracy and can measure at any angle and position. Its disadvantage is that the device has a complex structure, is cumbersome to operate, and lacks automated testing.

[0005] For example, an angle measuring device and its usage method with patent number CN201810435773.0 can accurately measure the angle between the object being measured and the plumb line. Its advantages are simple structure, convenient installation, low cost and high temperature resistance. Its disadvantages are that the device does not have automated testing, lacks human-computer interaction and is cumbersome to calculate.

[0006] Currently, there are no automated devices available for measuring the visual field of a helmet. Measurements are primarily done manually and through visual observation, lacking a systematic and scientific approach. To address this issue, this invention uses a control panel to control a stepper motor carrying a diffuse laser to intelligently scan the helmet's edge, obtaining angle values ​​that are then returned to the athlete or coach, effectively achieving human-computer interaction. This provides a scientific and intuitive representation of the athlete's visual field data while wearing the helmet. Summary of the Invention

[0007] The purpose of this invention is to provide equipment for automated visual field testing of ice and snow helmets, a device that can automatically test the angle value of the front edge of the helmet, a control panel that allows instructors to intuitively view data and interacts bidirectionally with the automated equipment, a device for measuring the visual field by precisely rotating horizontal and vertical motors, and a set of intelligent equipment that can mimic the human eye scanning the edge. Its application prospects are promising. This invention has developed a device for measuring the visual field of helmets, which can fully replace manual measurement and has stability and accuracy. It helps to promote breakthroughs in key technologies in the ergonomic evaluation of ice and snow wearable equipment and has high application value and prospects.

[0008] To achieve the above objectives, the present invention provides the following technical solution: equipment for automated visual field testing of ice and snow helmets.

[0009] As an optional solution for the automated visual field testing equipment for ice and snow helmets according to the present invention, the equipment for automated visual field testing of ice and snow helmets includes a base plate and a control panel. The top of the base plate is provided with two connecting plates, front and rear. The inner side of the connecting plate is provided with an f-slide groove. A pressure plate is slidably connected to the inner side of the f-slide groove. The pressure plate is fixed in position on the f-slide groove by a screw and nut assembly. The helmet is installed by the close pressing of the two pressure plates.

[0010] With the above setup, during use, the helmet is mounted on the connecting plate via a pressure plate. The connecting plate is then reinforced with screws and connected to the end of the spindle of the B stepper motor. After installation, the B stepper motor can drive the helmet to deflect at an angle.

[0011] An encoder is provided at the bottom of the helmet, a b-stepper motor is fixedly connected to the top of the encoder, a diffuse reflection laser is fixedly connected to the top of the b-stepper motor, and the diffuse reflection laser is movably arranged on the inside of the helmet.

[0012] Under the above settings, the b stepper motor can drive the diffuse reflection laser to move inside the helmet. The diffuse reflection laser can scan the boundary of the helmet and receive the laser reflection signal to control the rotation switch. The encoder obtains the rotation angle, thereby accurately obtaining the helmet's field of view.

[0013] As an optional solution for the automated visual field testing equipment for ice and snow helmets described in this invention, wherein: a c-groove is provided at the top of the base plate, and the inner side of the c-groove is slidably connected to the outer side of the bottom end of the encoder housing;

[0014] With the above setup, the encoder, stepper motor B, and diffuse laser can be adjusted in position forward and backward. There is a large friction between the outer bottom of the encoder housing and the inner side of the slide groove C, which prevents the encoder from shaking randomly.

[0015] As an optional solution for the automated visual field testing equipment for ice and snow helmets described in this invention, a horizontal plate is fixedly connected to the top of the base plate, and two vertical plates are fixedly connected to the top of the horizontal plate. A sliding plate is slidably connected to one side of each of the two vertical plates. With the above configuration, the height of the helmet can be changed by adjusting the sliding plate on the vertical plate, thereby increasing the applicability of this equipment and making it suitable for helmets of different sizes.

[0016] As an optional solution for the automated visual field testing equipment for ice and snow helmets described in this invention, wherein: the vertical plate and the sliding plate are respectively provided with a b-slide groove and a d-slide groove, the b-slide groove and the d-slide groove are positioned corresponding to each other, and the b-slide groove and the d-slide groove are connected by a screw and nut assembly.

[0017] With the above setup, the screw is passed through the b and d slides, and the nut is screwed onto the screw. By rotating the nut, the friction between the vertical board and the slide can be adjusted. When the friction between the vertical board and the slide decreases, the slide can slide up and down. When the friction between the vertical board and the slide increases, the slide can be fixed in position on the vertical board.

[0018] As an optional solution for the automated visual field testing equipment for ice and snow helmets described in this invention, wherein: an a-stepper motor is fixedly connected to the top of the skateboard, and a rotating plate is fixedly connected to the end of the main shaft of the a-stepper motor, and the helmet is rotated by the rotation of the a-stepper motor.

[0019] As an optional solution for the automated visual field testing equipment for ice and snow helmets described in this invention, wherein: the rotating plate is provided with an e-slide groove, the connecting plate is slidably disposed inside the e-slide groove, and the connecting plate is fixed inside the e-slide groove by a screw and nut assembly.

[0020] With the above settings, the position between the two connecting plates can be adjusted and fixed, and helmets of different sizes can be fixed. The screws are fixedly connected to the connecting plates, and rotating the nut to press the nut against the rotating plate can fix the position of the connecting plate on the rotating plate.

[0021] As an optional solution for the automated visual field testing equipment for ice and snow helmets described in this invention, wherein: a sliding groove a is provided on the inner side of the base plate, the inner side of the sliding groove a is slidably connected to the outer side of the bottom end of the horizontal plate, and the position of the horizontal plate on the sliding groove a is fixed by a screw and nut assembly.

[0022] Under the above configuration, the helmet slides axially through the a-slide groove on the base plate, and its position is fixed by tightening or loosening the screw and nut assembly. The helmet's horizontal position is adjusted, the screw slides inside the a-slide groove, the screw passes through the inside of the cross plate, and the cross plate and base plate can be pressed together by rotating the nut.

[0023] The steps for using the automated visual field testing equipment for ice and snow helmets as described above are as follows:

[0024] Step 1: Adjust the position of the helmet and diffuse laser.

[0025] Step 2: Control the B stepper motor to rotate inside the helmet with the laser reflector via the control panel. The A stepper motor allows the helmet to rotate freely. When the laser scans the helmet boundary, the laser reflection signal is received to control the rotation switches of the A and B stepper motors. The rotation angle is obtained through the encoder, thereby accurately obtaining the helmet's field of view.

[0026] As an optional solution for the use of the automated visual field testing equipment for ice and snow helmets described in this invention, the helmet position adjustment step is as follows:

[0027] S1; The helmet is mounted on the connecting plate via a pressure plate;

[0028] S2; After securing the helmet, adjust its height using the screw and nut assembly on the skateboard;

[0029] S3; The helmet slides axially through the groove a on the base plate, and its position is fixed by tightening or loosening the screw and nut assembly, thus adjusting the helmet's horizontal position;

[0030] S4; The diffuse laser can be moved horizontally on the base plate via the c-slide groove, which is used to adjust the position of the diffuse laser inside the helmet.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] 1. This automated visual field testing equipment for ice and snow helmets provides a device that can automatically test the angle value of the front edge of the helmet, a control panel that allows instructors to intuitively view data and interacts with the automated equipment, and a device that provides precise step rotation of horizontal and vertical motors to measure the visual field.

[0033] 2. This automated visual field testing equipment for ice and snow helmets provides a set of intelligent equipment that can mimic the human eye scanning edge. Its application prospects are promising. It has developed a device for measuring the visual field of helmets, which can fully replace manual measurement and has stability and accuracy. It helps to promote breakthroughs in key technologies in the ergonomic evaluation of ice and snow wearable equipment and has high application value and prospects. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall installation structure of the present invention;

[0035] Figure 2 For the present invention Figure 1 A partial structural diagram of the skateboard area;

[0036] Figure 3 For the present invention Figure 1 A partial structural diagram of the connecting plate;

[0037] Figure 4 This is a schematic diagram illustrating the principle of laser measurement in this invention.

[0038] In the diagram: 1. Base plate; 2. a-slide; 3. Vertical plate; 4. b-slide; 5. a-stepper motor; 6. Connecting plate; 7. Helmet; 8. b-stepper motor; 9. Diffuse laser; 10. c-slide; 11. Slide plate; 12. Screw and nut assembly; 13. d-slide; 14. Rotating plate; 15. e-slide; 16. Pressure plate; 17. Encoder; 18. f-slide; 19. Horizontal plate; 20. Control panel. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0040] Please see Figure 1-4 The present invention provides a technical solution:

[0041] The equipment for automated visual field testing of ice and snow helmets includes a base plate 1 and a control panel 20. The top of the base plate 1 is provided with two connecting plates 6, one in front and one behind. The inner side of the connecting plates 6 is provided with an f-slide groove 18. A pressure plate 16 is slidably connected to the inner side of the f-slide groove 18. The pressure plate 16 is fixed in position on the f-slide groove 18 by a screw and nut assembly 12. The helmet 7 is installed by the close pressing of the two pressure plates 16.

[0042] Under the above configuration, when in use, the helmet 7 is mounted on the connecting plate 6 via the pressure plate 16. The connecting plate 6 is connected to the end of the spindle of the stepper motor 5 after being reinforced with screws. After installation, the stepper motor 5 can drive the helmet 7 to deflect at an angle.

[0043] The helmet 7 is equipped with an encoder 17 at its bottom end. A stepper motor 8 is fixedly connected to the top of the encoder 17. A diffuse reflection laser 9 is fixedly connected to the top of the stepper motor 8. The diffuse reflection laser 9 is movably disposed on the inside of the helmet 7.

[0044] Under the above settings, stepper motor 8 can drive diffuse reflection laser 9 to move inside the helmet 7. The diffuse reflection laser 9 can scan the boundary of the helmet and receive laser reflection signals to control the rotation switch. The encoder 17 obtains the rotation angle, thereby accurately obtaining the field of view of the helmet 7. Example

[0045] This embodiment is an improvement upon embodiment 1. Please refer to [link / reference]. Figure 1 The top of the base plate 1 is provided with a c-groove 10, and the inner side of the c-groove 10 is slidably connected to the outer side of the bottom end of the encoder 17 housing.

[0046] Under the above configuration, the encoder 17, stepper motor 8, and diffuse laser 9 can be adjusted in position forward and backward. There is a large friction between the outer bottom of the encoder 17 housing and the inner side of the slide groove 10, which prevents the encoder 17 from shaking randomly. Example

[0047] This embodiment is an improvement upon embodiment 2. Please refer to [link / reference]. Figure 1 and Figure 2 A horizontal plate 19 is fixedly connected to the top of the base plate 1. Two vertical plates 3 are fixedly connected to the top of the horizontal plate 19. A sliding plate 11 is slidably connected to one side of each of the two vertical plates 3. With the above configuration, the height of the helmet 7 can be changed by adjusting the sliding plate 11 on the vertical plate 3, thereby increasing the applicability of this equipment and making it suitable for helmets 7 of different sizes. Example

[0048] This embodiment is an improvement upon embodiment 3. Please refer to [link / reference]. Figure 1 and Figure 2 The vertical plate 3 and the sliding plate 11 are respectively provided with a b-slide groove 4 and a d-slide groove 13. The b-slide groove 4 and the d-slide groove 13 are positioned corresponding to each other, and the b-slide groove 4 and the d-slide groove 13 are connected by a screw and nut assembly 12.

[0049] With the above setup, the screw is passed through the b-slide 4 and the d-slide 13, and the nut is screwed onto the screw. By rotating the nut, the friction between the vertical plate 3 and the slide plate 11 can be adjusted. When the friction between the vertical plate 3 and the slide plate 11 decreases, the slide plate 11 can slide up and down. When the friction between the vertical plate 3 and the slide plate 11 increases, the slide plate 11 can be fixed in position on the vertical plate 3. Example

[0050] This embodiment is an improvement upon embodiment 1. Please refer to [link / reference]. Figure 1 and Figure 2The top of the aforementioned skateboard 11 is fixedly connected to a stepper motor 5, and the end of the main shaft of the aforementioned stepper motor 5 is fixedly connected to a rotating plate 14. The rotation of the helmet 7 is achieved by the rotation of the stepper motor 5. Example

[0051] This embodiment is an improvement upon embodiment 1. Please refer to [link / reference]. Figure 1-3 The aforementioned rotating plate 14 has an e-slide groove 15, and the aforementioned connecting plate 6 is slidably disposed inside the e-slide groove 15. The aforementioned connecting plate 6 is fixed inside the e-slide groove 15 by a screw and nut assembly 12.

[0052] With the above settings, the position between the two connecting plates 6 can be adjusted and fixed, and helmets 7 of different sizes can be fixed. The screws are fixedly connected to the connecting plates 6. Rotating the nut to press the rotating plate 14 can fix the position of the connecting plate 6 on the rotating plate 14. Example

[0053] This embodiment is an improvement upon embodiment 1. Please refer to [link / reference]. Figure 1 and Figure 2 The bottom plate 1 has an a-slide groove 2 on its inner side. The inner side of the a-slide groove 2 is slidably connected to the outer side of the bottom end of the horizontal plate 19. The position of the horizontal plate 19 on the a-slide groove 2 is fixed by the screw and nut assembly 12.

[0054] Under the above configuration, the helmet 7 slides axially through the a-slide groove 2 on the base plate 1, and its position is fixed by the tightening and loosening of the screw and nut assembly 12. The horizontal position of the helmet 7 is adjusted, the screw slides inside the a-slide groove 2, the screw passes through the inside of the horizontal plate 19, and the horizontal plate 19 and the base plate 1 can be pressed together by rotating the nut.

[0055] It should be noted that the present invention also discloses a method for using an automated visual field testing equipment for ice and snow helmets, the method of use being as follows;

[0056] S1; Helmet 7 is mounted on connecting plate 6 via pressure plate 16;

[0057] S2; After securing the helmet 7, adjust the height of the helmet 7 using the screw and nut assembly 12 on the slide plate 11;

[0058] S3; The helmet 7 slides axially through the groove 2 on the base plate 1, and its position is fixed by the tightening or loosening of the screw and nut assembly 12, thereby adjusting the horizontal position of the helmet 7.

[0059] S4; The diffuse reflection laser 9 can be moved horizontally on the base plate 1 via the c-slide groove 10, which is used to adjust the position of the diffuse reflection laser 9 inside the helmet 7.

[0060] S5; The b stepper motor 8 with the motion-reflecting laser 9 is controlled to rotate inside the helmet 7 via the control panel 20. The helmet 7 can be freely rotated by the a stepper motor 5. When the laser scans the boundary of the helmet 7, the laser reflection signal is received to control the rotation switch of the a stepper motor 5 and the b stepper motor 8. The rotation angle is obtained through the encoder 17, thereby accurately obtaining the helmet's field of view.

[0061] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for using an equipment for automatic field of vision test of snow helmet, characterized in that the equipment comprises a base plate (1) and a control panel (20), the top end of the base plate (1) is provided with two front and rear connecting plates (6), the inner side of the connecting plate (6) is provided with an f sliding groove (18), the inner side of the f sliding groove (18) is slidably connected with a pressing plate (16), the position of the pressing plate (16) on the f sliding groove (18) is fixed through a screw nut assembly (12), and the installation of the helmet (7) is realized through the close pressing of the two front and rear pressing plates (16); the bottom end of the helmet (7) is provided with an encoder (17), the top end of the encoder (17) is fixedly connected with a b stepping motor (8), the top end of the b stepping motor (8) is fixedly connected with a diffuse reflection laser (9), and the diffuse reflection laser (9) is movably arranged on the inner side of the helmet (7); the top end of the base plate (1) is provided with a c sliding groove (10), and the inner side of the c sliding groove (10) is slidably connected with the bottom end of the encoder (17) shell; the top end of the base plate (1) is fixedly connected with a horizontal plate (19), the top end of the horizontal plate (19) is fixedly connected with two vertical plates (3), and one side of each of the two vertical plates (3) is slidably connected with a sliding plate (11); b sliding grooves (4) and d sliding grooves (13) are respectively arranged on the vertical plates (3) and the sliding plates (11), the positions of the b sliding grooves (4) and the d sliding grooves (13) correspond to each other, and the b sliding grooves (4) and the d sliding grooves (13) are connected through the screw nut assembly (12); the top end of the sliding plate (11) is fixedly connected with an a stepping motor (5), the main shaft of the a stepping motor (5) is fixedly connected with a rotating plate (14), and the rotation of the a stepping motor (5) realizes the rotation of the helmet (7); an e sliding groove (15) is arranged on the rotating plate (14), the connecting plate (6) is slidably arranged on the inner side of the e sliding groove (15), and the position of the connecting plate (6) on the inner side of the e sliding groove (15) is fixed through the screw nut assembly (12); the inner side of the base plate (1) is provided with an a sliding groove (2), the inner side of the a sliding groove (2) is slidably connected with the bottom end of the horizontal plate (19), and the position of the horizontal plate (19) on the a sliding groove (2) is fixed through the screw nut assembly (12); the steps are as follows: Step one: adjust the position of the helmet (7) and the diffuse reflection laser (9); Step two: control the b stepping motor (8) to drive the diffuse reflection laser (9) to rotate in the helmet (7) through the control panel (20), freely rotate the angle of the helmet (7) through the a stepping motor (5), when the laser scans the boundary of the helmet (7), receive the laser reflection signal to control the rotation switch of the a stepping motor (5) and the b stepping motor (8), and obtain the rotation angle through the encoder (17), and then accurately obtain the field of vision range of the helmet. The helmet (7) position adjustment step is as follows:

2. The method of use of claim 1, wherein, S1: the helmet (7) is installed on the connecting plate (6) through the pressing plate (16). ​ S2; after fixing the helmet (7), adjust the height position of the helmet (7) through the screw nut assembly (12) on the slide plate (11); S3; adjust the horizontal position of the helmet (7) by making the helmet (7) axially slide through the a slide groove (2) on the bottom plate (1) and fixing the position by the tightness of the screw nut assembly (12); S4; adjust the position of the diffuse reflection laser (9) inside the helmet (7) by making the diffuse reflection laser (9) horizontally move on the bottom plate (1) through the c slide groove (10).

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