CN219126300U - A dynamic vision tester that can adapt to changes in ambient light and variable contrast - Google Patents

Abstract

The utility model discloses a dynamic visual acuity detector which can adapt to ambient light changes and variable contrast, and belongs to the technical field of medical inspection. The dynamic vision tester includes a motor, the output end of the motor is connected with a turntable, the motor can drive the turntable to rotate and adjust its speed, the turntable is embedded with a disc, the disc is embedded with an ink screen, and the ink screen displays visual marks , the visual mark is always kept horizontal during the rotation of the turntable. When using the dynamic vision tester, turn on the power, the power drives the motor to rotate the turntable, and the subject observes the moving visual target at the designated position. direction, detect the dynamic vision of the subjects in various situations, and then analyze and evaluate the test results of the subjects. The dynamic vision tester composed of a mechanical turntable and an ink screen will not be affected by the light source and refresh rate of the self-luminous electronic display, and the test results are more real and reliable.

Description

A dynamic vision tester that can adapt to changes in ambient light and variable contrast

technical field

The utility model belongs to the technical field of medical inspection, and in particular relates to a dynamic vision detector which can adapt to changes in ambient light and variable contrast.

Background technique

Dynamic vision refers to the ability to recognize details of visual objects when there is relative motion between the subject and the object. It is usually defined as a motor vision ability for individuals to correctly identify subtle parts of moving objects. Dynamic visual ability directly affects the observer's ability to accurately distinguish dynamic targets. It is an important physical examination indicator for special occupations such as pilots, drivers, and athletes, and is related to safe driving and sports performance.

There are various ways to detect dynamic vision, such as Kirschner Rotator, Motorized PegboardRotator, Micromedical Technologies, Athlete-Vision and DVA-I and other detection software, but these detection software are used in conjunction with self-illuminating electronic displays, the brightness of electronic displays, Factors such as contrast and refresh rate will affect the results of dynamic vision examination. And because the above-mentioned people engaged in special occupations often move in a variety of light environments, different external light environments are particularly important in evaluating dynamic vision. However, the current dynamic vision testing equipment uses self-luminous LCD screens, which cannot Meet the strict requirements of dynamic vision detection on the external light environment.

Utility model content

In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide a dynamic visual acuity tester that can adapt to changes in ambient light and variable contrast, so as to solve the problem that the self-luminous electronic display used in the existing dynamic visual acuity testing method will affect the dynamic Problems with vision test results.

In order to achieve the above object, the utility model adopts the following technical solutions to achieve:

The utility model discloses a dynamic vision detector which can adapt to changes in ambient light and variable contrast, which comprises a motor, the output end of the motor is connected with a turntable, and a disc is embedded in the turntable, and an ink screen is installed on the disc. There is an optotype displayed on the screen, and the optotype is always kept horizontal during the rotation of the turntable.

Preferably, an electric control box and a bracket are also included, and the electric control box and the motor are both arranged on the bracket.

Further preferably, a synchronous pulley I is fixed on the support, a synchronous pulley II is fixed on the back of the disc, and a synchronous belt is connected to the synchronous pulley I and the synchronous pulley II.

Preferably, the bracket includes a fixed bracket and a supporting bracket, and the motor and the electric control box are arranged on the fixed bracket.

Preferably, the turntable includes an upper connecting plate, a receiving plate and a lower connecting plate connected in sequence, and the upper connecting plate, the receiving plate and the lower connecting plate together form a circular turntable.

Further preferably, the upper connecting plate, the receiving plate and the lower connecting plate are connected by screws or buckles.

Preferably, the receiving plate is connected to the output end of the motor.

Preferably, the upper connecting plate, the receiving plate and the lower connecting plate can all be folded in half through hinges.

Preferably, the ink screen has a built-in ink screen power supply, and a switch is provided on the back.

Preferably, the dynamic vision detector is connected with a transponder.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model provides a dynamic vision detector that can adapt to changes in ambient light and variable contrast. The design of the mechanical turntable in the device is combined with a non-luminous ink screen to display the optotype. The optotype on the ink screen rotates on the turntable. At the same time, it is always kept level, which can ensure that the shape of the visual target does not change. At the same time, the visual target on the ink screen will change with the change of external light, which can eliminate the influence of the self-luminous electronic display on the dynamic vision detection. The disc-type rotation setting can adjust the movement speed of the visual target and display the time, which can solve the problem that the existing dynamic vision detection device meets the situation that the visual target movement speed is too fast, and the display screen is made relatively large to ensure the presentation time, which makes it difficult to carry Difficult and costly problems. Compared with the digital demonstration of self-luminous electronic display with conventional dynamic vision testing software, the scene demonstrated by the dynamic vision testing instrument composed of mechanical turntable and ink screen visual mark is closer to the real world, and the visual mark on the ink screen is not affected by the display. Influenced by the light source and refresh rate, the test results are more real and reliable, the test is more convenient, the portability is easier, and it is more suitable for industrial production.

Furthermore, the turntable can be disassembled into an upper connecting plate, a receiving plate and a lower connecting plate, and the upper connecting plate, the receiving plate and the lower connecting plate can be further folded through hinges, which can reduce the volume of the device and make the dynamic vision detector more portable.

Furthermore, the mechanical turntable and the non-luminous ink screen are combined with the dynamic vision evaluation software on the computer, and the computer controls the rotation speed, direction and contrast of the visual target, and judges the results, so that the detection range of the dynamic vision tester is wider. Smarter and more diverse.

Description of drawings

Fig. 1 is the front structure schematic diagram of the dynamic visual acuity tester of the present utility model;

Fig. 2 is a schematic view of the back structure of the dynamic vision detector of the present invention;

Figure 3 is a diagram of a transponder used in conjunction with a dynamic vision tester;

Fig. 4 is the front three-dimensional assembly schematic diagram of the dynamic visual acuity tester of the present utility model;

Fig. 5 is a three-dimensional assembly schematic diagram of the back side of the dynamic vision detector of the present invention.

Among them: 1. Turntable; 1-1. Upper connecting plate; 1-2. Accepting plate; 1-3. Lower connecting plate; 2. Disc; 3. Ink screen; 4. Bracket; 4-1. Fixed bracket; 4-2. Support bracket; 5. Synchronous pulley Ⅰ; 6. Motor; 7. Electric control box; 8. Synchronous pulley Ⅱ; 9. Synchronous belt.

Detailed ways

In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the utility model. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

It should be noted that the terms "first" and "second" in the specification and claims of the present utility model and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific order or sequence . It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.

Below in conjunction with accompanying drawing, the utility model is described in further detail:

The utility model provides a dynamic vision detector that can adapt to changes in ambient light and variable contrast, as shown in Figures 1 and 2, including a bracket 4, which can provide support for the entire dynamic vision detector; the bracket 4 is provided with Motion assembly, motor 6 and electric control box 7. The electric control box 7 can supply power for the motor 6, and receives the control signal sent by the computer to control the start-stop and rotation speed of the motor 6; the motor 6 can drive the moving components. The moving assembly includes a turntable 1, a disc 2 and an ink screen 3. The turntable 1 is connected to the output end of a motor 6. The motor 6 can drive the turntable 1 to rotate in a circumferential direction, and adjust the turntable 1 according to the control signal sent by the electric control box 7. speed. The disk 2 is embedded on the turntable 1, and the ink screen 3 is installed on the disk 2. The ink screen 3 has a built-in ink screen power supply, and a switch is set on the back, and the data is transmitted with the computer terminal through wireless transmission; the front of the ink screen 3 displays The visual target, the visual target is always kept horizontal during the rotation of the turntable 1, and the brightness and color of the visual target will change with the change of the external light, thereby eliminating the influence of the light source and refresh rate of the self-luminous electronic display on the dynamic vision detection. As shown in Figure 3, the dynamic visual acuity tester is connected to the transponder and the computer terminal equipped with dynamic visual acuity assessment software, and the dynamic visual acuity assessment software can control the electric control box 7; Rotational speed, contrast of the visual target or size of the visual target; obtain the dynamic vision test result of the subject through the transponder, and transmit the dynamic vision test result to the computer terminal, and test the dynamic vision test of the subject through the dynamic vision assessment software on the computer terminal The results are checked and analyzed and a dynamic vision test report is drawn, making the entire dynamic vision test process more scientific, convenient and intelligent.

The utility model provides a method for using a dynamic visual acuity tester that can adapt to changes in ambient light and variable contrast. When performing dynamic visual acuity testing, the power supply of the electric control box 7 is first connected, and the computer equipped with dynamic visual acuity evaluation software is connected The electric control box 7 sends out a signal, and the drive motor 6 drives the turntable 1 to rotate. The subject observes the visual target moving on the turntable 1 at a designated position, and adjusts the ambient light, the rotating speed of the turntable 1, the contrast of the visual target, the size of the visual target and the visual target. The direction of the target is used to detect the ability of the subject to capture, decompose, and perceive the image of the moving target when observing the moving target in various situations, and then analyze and evaluate the test results of the subject.

Example 1

The utility model provides a dynamic vision detector that can adapt to changes in ambient light and variable contrast, as shown in Figures 4 and 5, including a support 4 that can provide support, and the support 4 is composed of a fixed support 4-1 and a support support 4- 2, the support bracket 4-2 can be quickly detached from the fixed bracket 4-1, and the bracket 4 can be disassembled to be portable when not in use. The fixed bracket 4-1 is provided with a motor 6 and an electric control box 7; the electric control box 7 can supply power to the motor 6, and receive control signals from the computer to control the start and stop of the motor and the speed of rotation; the output end of the motor 6 is connected to a turntable 1. The motor 6 can drive the turntable 1 to rotate in a circumferential direction, and adjust the rotation speed of the turntable 1 according to the control signal sent by the electric control box 7 . The turntable 1 includes an upper connecting plate 1-1, a receiving plate 1-2 and a lower connecting plate 1-3 connected by screws from top to bottom. Further, the screws can also be replaced with buckles, and the upper connecting plate 1-1 , the receiving plate 1-2 and the lower connecting plate 1-3 jointly constitute a circular turntable 1, the center of the receiving plate 1-2 is also the center of the rotating disc 1, and the receiving plate 1-2 is connected with the output end of the motor 6. Furthermore, after the upper connecting plate 1-1, the receiving plate 1-2 and the lower connecting plate 1-3 are separated from each other, they can be folded in half through hinges, and the turntable 1 can be disassembled during the transportation of the dynamic vision detector. Folds in half for easy transport. The end of the receiving plate 1-2 of the turntable 1 away from the center of the circle is embedded with a disc 2, the disc 2 is equipped with an ink screen 3, the ink screen 3 is equipped with a power supply for the ink screen, the back is equipped with a switch, and the front is displayed. Data transmission is carried out with the computer terminal in the form of wireless transmission; the brightness and color of the visual mark displayed on the ink screen 3 will change with the change of the external light, thereby eliminating the influence of the light source and refresh rate of the self-luminous electronic display on the dynamic vision detection. The support bracket 4-2 is also fixed with a synchronous pulley Ⅰ5, which does not rotate relative to the support bracket 4-2, and a synchronous pulley Ⅱ8 is fixed on the back of the disc 2, and the synchronous pulley Ⅱ8 does not rotate relative to the disc 2 , synchronous pulley I5 and synchronous pulley II8 are connected with the same synchronous belt 9, when the turntable 1 rotates, the synchronous belt wheel II8 drives the synchronous belt 9 to rotate around the synchronous belt wheel I5, and the synchronous belt wheel I5 rotates with the synchronous belt 9 so that the disc 2 on the visual standard is always kept horizontal. The dynamic visual acuity tester is connected with a transponder and a computer terminal equipped with dynamic visual acuity evaluation software, and controls the direction of the visual target, the rotating speed of the turntable 1, the contrast of the visual target and the size of the visual target of the dynamic visual acuity tester through the computer terminal; The tester’s dynamic vision test results, the transponder transmits the dynamic vision test results to the computer terminal, and the results evaluation software is used to check and analyze the dynamic vision test results of the subjects on the computer terminal and obtain a dynamic vision test report.

The utility model provides a method for using a dynamic vision detector that can adapt to changes in ambient light and variable contrast. When using the dynamic vision detector for dynamic vision detection, the power supply of the electric control box 7 is connected, and a dynamic vision evaluation device is installed. The computer of the software is connected to the electric control box 7 and sends out a signal. The drive motor 6 drives the turntable 1 to rotate, and the visual mark moves with the turntable 1. The subject observes the movement of the visual mark on the turntable 1 at a designated position, and the inspector adjusts the turntable 1 through the computer. The rotating speed and the shape of the visual target are used to test the subject’s ability to distinguish different shapes of visual targets when the rotating speed of the turntable 1 is increased from low speed to high speed; the testers adjust the contrast and shape of the visual target through the computer terminal, and test the test subjects on the turntable. 1 Under the condition of constant speed rotation, the ability to distinguish different contrast visual targets; the inspectors adjust the rotation speed of the turntable 1, the contrast and shape of the visual targets through the computer terminal, and test the subject’s resolution of different contrast visual targets at different speeds of the turntable 1 ability; inspectors adjust the size and shape of the visual target through the computer terminal, and test the subject’s ability to distinguish different sizes of visual targets under the condition that the turntable 1 rotates at a constant speed; the tester adjusts the rotation speed of the turntable 1, the size and Shape, to test the subject’s ability to distinguish different sizes of visual targets at different speeds of the turntable 1; the tester adjusts the rotation speed of the turntable 1, the size, contrast and shape of the visual target through the computer terminal, and tests the subject’s ability to distinguish the target at different speeds of the turntable 1 , the ability to distinguish visual targets of different sizes and contrasts; the subject transmits the test results to the computer through the transponder, and the computer analyzes and evaluates the test results of the subject through the result evaluation software.

The above content is only to illustrate the technical idea of the utility model, and cannot limit the protection scope of the utility model. Any changes made on the basis of the technical solution according to the technical idea proposed by the utility model all fall into the scope of the utility model. within the scope of protection of the claims.

Claims (10)

1. The utility model provides an adaptable environment light changes and dynamic vision detector of variable contrast, its characterized in that, including motor (6), the output of motor (6) is connected with carousel (1), has inlayed disc (2) on carousel (1), installs ink screen (3) on disc (2), shows on ink screen (3) and has the optotype, and the optotype remains the level throughout in carousel (1) rotation process.

2. The dynamic vision detector capable of adapting to ambient light changes and variable contrast according to claim 1, further comprising an electric cabinet (7) and a bracket (4), wherein the electric cabinet (7) and the motor (6) are both arranged on the bracket (4).

3. The dynamic vision detector capable of adapting to the change of the ambient light and the variable contrast according to claim 2 is characterized in that a synchronous pulley I (5) is fixed on the support (4), a synchronous pulley II (8) is fixed on the back of the disc (2), and a synchronous belt (9) is connected to the synchronous pulley I (5) and the synchronous pulley II (8).

4. A dynamic vision tester adaptable to ambient light variation and variable contrast according to claim 2, wherein the bracket (4) comprises a fixed bracket (4-1) and a supporting bracket (4-2), and the motor (6) and the electric cabinet (7) are arranged on the fixed bracket (4-1).

5. The dynamic vision detector capable of adapting to the change of the ambient light and the variable contrast according to claim 1, wherein the rotary table (1) comprises an upper connecting plate (1-1), a bearing plate (1-2) and a lower connecting plate (1-3) which are sequentially connected, and the upper connecting plate (1-1), the bearing plate (1-2) and the lower connecting plate (1-3) jointly form the circular rotary table (1).

6. A dynamic vision tester adaptable to ambient light variations and variable contrast according to claim 5, wherein the upper connection plate (1-1), the receiving plate (1-2) and the lower connection plate (1-3) are connected by screws or snap-fit.

7. A dynamic vision tester adaptable to ambient light variations and variable contrast according to claim 5, wherein the receiving plate (1-2) is connected to the output of the motor (6).

8. The dynamic vision detector capable of adapting to the change of the ambient light and the variable contrast according to claim 5, wherein the upper connecting plate (1-1), the bearing plate (1-2) and the lower connecting plate (1-3) can be folded in half again through hinges.

9. The dynamic vision detector capable of adapting to the change of ambient light and the variable contrast according to claim 1, wherein an ink screen power supply is arranged in the ink screen (3), and a switch is arranged on the back surface.

10. A dynamic vision tester adaptable to ambient light variations and variable contrast as defined in claim 1, wherein a transponder is coupled to the dynamic vision tester.

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