CN219126300U - Dynamic vision detector adaptable to ambient light change and variable contrast - Google Patents

Abstract

The utility model discloses a dynamic vision detector capable of adapting to environmental light change and variable contrast, and belongs to the technical field of medical examination. The dynamic vision detector comprises a motor, wherein the output end of the motor is connected with a rotary table, the rotary table can be driven to rotate and adjust the rotating speed of the rotary table, a disc is embedded on the rotary table, an ink screen is embedded on the disc, a sighting mark is displayed on the ink screen, and the sighting mark is always kept horizontal in the rotating process of the rotary table. When the dynamic vision detector is used, a power supply is connected, the power supply drives a motor to enable a turntable to rotate, a testee observes a moving optotype at a designated position, and a tester detects the dynamic vision of the testee under various situations by adjusting the rotating speed of the turntable, the contrast of the optotype, the size of the optotype and the direction of the optotype, and then analyzes and evaluates the test result of the testee. The dynamic vision detector formed by the mechanical turntable and the ink screen is not influenced by the light source and the refresh rate of the self-luminous electronic display, and the test result is more true and reliable.

Description

Dynamic vision detector adaptable to ambient light change and variable contrast

Technical Field

The utility model belongs to the technical field of medical examination, and particularly relates to a dynamic vision detector which can adapt to environmental light changes and variable contrast.

Background

Dynamic vision refers to the ability to identify visual target details when there is relative motion between the subject and the object. It is generally defined as a motor vision ability that an individual can correctly recognize a minute part of an object in motion. The dynamic visual ability directly influences the accurate ability of an observer to judge a dynamic target, is an important physical examination index of special professionals such as pilots, drivers, athletes and the like, and is concerned with safe driving and athletic performance.

The dynamic Vision detection modes are diversified, such as Kirschner Rotator, motorized Pegboard Rotator, micromedical Technologies, athlete-Vision, DVA-I and other detection software, but the self-luminous electronic display is matched with the detection software, and the factors such as brightness, contrast, refresh rate and the like of the electronic display can influence the dynamic Vision detection result. Because the crowd engaged in special occupation often moves in various light environments, different external light environments are particularly important in evaluating dynamic eyesight, but the existing dynamic eyesight detection equipment adopts self-luminous liquid crystal screens, and cannot meet the strict requirements of dynamic eyesight detection on the external light environments.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model aims to provide a dynamic vision detector which can adapt to the change of ambient light and the variable contrast, and solve the problem that the self-luminous electronic display used by the existing dynamic vision detection method can influence the dynamic vision detection result.

In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:

the utility model discloses a dynamic vision detector which can adapt to the change of ambient light and variable contrast, comprising a motor, wherein the output end of the motor is connected with a rotary table, the rotary table is embedded with a disc, an ink screen is arranged on the disc, a sighting mark is displayed on the ink screen, and the sighting mark is always kept horizontal in the rotating process of the rotary table.

Preferably, the electric cabinet and the motor are 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 comprises a fixed bracket and a supporting bracket, and the motor and the electric cabinet are arranged on the fixed bracket.

Preferably, the rotary table comprises an upper connecting plate, a bearing plate and a lower connecting plate which are connected in sequence, and the upper connecting plate, the bearing plate and the lower connecting plate jointly form a circular rotary table.

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 of the motor.

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

Preferably, the ink screen is internally provided with an ink screen power supply, and the back surface is provided with a switch.

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 which can adapt to the change of ambient light and variable contrast, wherein the design of a mechanical rotary table in the device is combined with a non-luminous ink screen to display a visual target, the visual target on the ink screen is always kept horizontal while the rotary table rotates, the shape of the visual target can be ensured not to be changed, and meanwhile, the visual target on the ink screen can be changed along with the change of external light, so that the influence of a self-luminous electronic display on dynamic vision detection can be eliminated. The disc type rotation setting can adjust the movement speed of the optotype and display time, and the problems that the conventional dynamic vision detection device is difficult to carry and high in cost because the display screen is made larger for guaranteeing the presentation time under the condition that the movement speed of the optotype is too fast can be solved. Compared with the digital demonstration of the self-luminous electronic display matched with the conventional dynamic vision testing software, the scene demonstrated by the dynamic vision tester formed by combining the mechanical rotary disc and the visual target of the ink screen is closer to the real world, the visual target on the ink screen is not influenced by the display light source and the refresh rate, the testing result is more true and reliable, the testing is more convenient, the carrying is easier, and the method is more suitable for industrialized production.

Further, the carousel can be dismantled to upper junction plate, accept board and lower connecting plate, and upper junction plate, accept board and lower connecting plate and can realize further folding through the hinge, can reduce equipment volume, make dynamic vision detector more portable in the transportation.

Further, the mechanical rotary table and the non-luminous ink screen are combined with dynamic vision evaluation software on a computer, the rotation speed, the direction and the contrast of the sighting target are controlled through the computer, and the result is judged, so that the dynamic vision detector has wider detection range and is more intelligent and diversified.

Drawings

FIG. 1 is a schematic diagram of the front structure of a dynamic vision tester of the present utility model;

FIG. 2 is a schematic view of the back structure of the dynamic vision tester of the present utility model;

FIG. 3 is a diagram of a transponder for use with a dynamic vision tester;

FIG. 4 is a schematic view of a front perspective assembly of the dynamic vision tester of the present utility model;

fig. 5 is a rear perspective view of the dynamic vision tester of the present utility model.

Wherein: 1. a turntable; 1-1, an upper connecting plate; 1-2, a receiving plate; 1-3, a lower connecting plate; 2. a disc; 3. an ink screen; 4. a bracket; 4-1, fixing a bracket; 4-2, supporting the bracket; 5. a synchronous belt wheel I; 6. a motor; 7. an electric control box; 8. a synchronous pulley II; 9. a synchronous belt.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The utility model is described in further detail below with reference to the attached drawing figures:

the utility model provides a dynamic vision detector which can adapt to the change of ambient light and the variable contrast, as shown in figures 1 and 2, comprising a bracket 4, wherein the bracket 4 can provide support for the whole dynamic vision detector; the bracket 4 is provided with a motion component, a motor 6 and an electric cabinet 7. The electric cabinet 7 can supply power to the motor 6 and receive control signals sent by a computer to control the start and stop and the rotation speed of the motor 6; the motor 6 can drive the moving assembly. The motion assembly comprises a rotary table 1, a disc 2 and an ink screen 3, wherein the rotary table 1 is connected with the output end of a motor 6, the motor 6 can drive the rotary table 1 to rotate circumferentially, and the rotating speed of the rotary table 1 is regulated according to a control signal sent by an electric cabinet 7. The disc 2 is embedded on the rotary disc 1, the ink screen 3 is arranged on the disc 2, an ink screen power supply is arranged in the ink screen 3, a switch is arranged on the back surface of the ink screen, and data transmission is carried out with a computer end in a wireless transmission mode; the front surface of the ink screen 3 displays the optotype, the optotype keeps horizontal all the time in the rotating process of the turntable 1, and the brightness and the color of the optotype can change along with the change of external light, so that the influence of the light source and the refresh rate of the self-luminous electronic display on the dynamic vision detection is eliminated. As shown in fig. 3, the dynamic vision detector is connected with a transponder and a computer end provided with dynamic vision evaluation software, and the dynamic vision evaluation software can control an electric cabinet 7; the direction of the visual target of the dynamic vision detector, the rotating speed of the rotating disc 1, the contrast of the visual target or the size of the visual target can be controlled through a computer end; the dynamic vision testing result of the subject is obtained through the transponder and is transmitted to the computer end, and the dynamic vision testing result of the subject is checked and analyzed through the dynamic vision evaluation software at the computer end to obtain a dynamic vision testing report, so that the whole dynamic vision testing process is more scientific, convenient and intelligent.

When the dynamic vision detection is carried out, the power of the electric cabinet 7 is firstly connected, a computer provided with dynamic vision evaluation software is connected with the electric cabinet 7 and sends out signals, the driving motor 6 drives the rotary table 1 to rotate, a subject observes a visual target moving on the rotary table 1 at a designated position, and the capability of capturing images, decomposing and perceiving the images of the moving target when the subject observes the moving target under various situations is detected by adjusting the ambient light, the rotating speed of the rotary table 1, the contrast of the visual target, the size of the visual target and the direction of the visual target, and then the test result of the subject is analyzed and evaluated.

Example 1

The utility model provides a dynamic vision detector capable of adapting to environmental light change and variable contrast, as shown in fig. 4 and 5, which comprises a support 4 capable of providing support, wherein the support 4 consists of a fixed support 4-1 and a support 4-2, the support 4-2 can be rapidly detached from the fixed support 4-1, and the support 4 can be taken away and carried when not in use. The fixed bracket 4-1 is provided with a motor 6 and an electric cabinet 7; the electric cabinet 7 can supply power to the motor 6 and receive control signals sent by a computer to control the start and stop of the motor and the rotation speed; the output of motor 6 is connected with carousel 1, and motor 6 can drive carousel 1 and carry out circumferential direction rotation to according to the control signal that electric cabinet 7 sent, adjust the rotational speed of carousel 1. The turntable 1 comprises an upper connecting plate 1-1, a bearing plate 1-2 and a lower connecting plate 1-3 which are connected from top to bottom through screws, further, the screws can be replaced by buckles, the upper connecting plate 1-1, the bearing plate 1-2 and the lower connecting plate 1-3 jointly form a circular turntable 1, the center of the bearing plate 1-2 is also the center of the turntable 1, and the bearing plate 1-2 is connected with the output end of the motor 6. Further, after the upper connecting plate 1-1, the bearing plate 1-2 and the lower connecting plate 1-3 are mutually detached, the turntable 1 can be detached and folded for convenient transportation in the transportation process of the dynamic vision detector through the hinge. One end of the bearing plate 1-2 of the rotary table 1, which is far away from the circle center, is embedded with a disc 2, the disc 2 is provided with an ink screen 3, an ink screen power supply is arranged in the ink screen 3, a switch is arranged on the back surface, a visual target is displayed on the front surface, and the ink screen 3 performs data transmission with a computer end in a wireless transmission mode; the brightness and color of the optotype displayed by the ink screen 3 will change along with the change of external light, so as to eliminate the influence of the light source and refresh rate of the self-luminous electronic display on the dynamic vision detection. Still be fixed with synchronous pulley I5 on the support frame 4-2, synchronous pulley I5 is fixed with synchronous pulley II 8 for support frame 4-2 non-rotation, disc 2 back, synchronous pulley II 8 is fixed with same hold-in range 9 for disc 2 non-rotation, synchronous pulley I5 and synchronous pulley II 8 are connected with, synchronous pulley II 8 drive synchronous belt 9 and rotate around synchronous pulley I5 when carousel 1 rotates, synchronous pulley I5 makes the optotype on disc 2 remain level all the time along with the rotation of synchronous belt 9. The dynamic vision detector is connected with the transponder and a computer end provided with dynamic vision evaluation software, and the direction of the visual target of the dynamic vision detector, the rotating speed of the rotating disc 1, the contrast of the visual target and the size of the visual target are controlled through the computer end; the dynamic vision testing result of the subject is obtained through the transponder, the transponder transmits the dynamic vision testing result to the computer end, and the dynamic vision testing result of the subject is checked and analyzed through the result evaluation software at the computer end to obtain a dynamic vision testing report.

The utility model provides a use method of a dynamic vision detector capable of adapting to environmental light change and variable contrast, when the dynamic vision detector is used for dynamic vision detection, a power supply of an electric cabinet 7 is connected, a computer provided with dynamic vision evaluation software is connected with the electric cabinet 7 and sends out a signal, a driving motor 6 drives a rotary table 1 to rotate, a sighting target moves along with the rotary table 1, a tester observes the movement of the sighting target on the rotary table 1 at a designated position, and a tester adjusts the rotating speed and the sighting target shape of the rotary table 1 through a computer end to test the resolving power of the sighting target in different shapes when the rotating speed of the rotary table 1 is increased from low speed to high speed; a detector adjusts the contrast and shape of the targets through a computer end, and detects the resolving power of the subjects on the targets with different contrasts under the condition that the turntable 1 rotates at a constant speed; a detector adjusts the rotating speed of the rotary table 1 and the contrast and shape of the optotype through a computer end to detect the resolving power of the testee on the optotype with different contrast under different speeds of the rotary table 1; a detector adjusts the size and shape of the sighting target through a computer end, and detects the resolving power of the testee on the sighting targets with different sizes under the condition that the turntable 1 rotates at a constant speed; a detector adjusts the rotating speed of the rotary table 1 and the size and shape of the sighting marks through a computer end to detect the resolving power of a subject on the sighting marks with different sizes under different speeds of the rotary table 1; a detector adjusts the rotating speed of the rotary table 1, the size, the contrast and the shape of the visual target through a computer end, and detects the resolving power of a subject on the visual target with different sizes and contrasts at different speeds of the rotary table 1; the test result is transmitted to the computer end through the transponder, and the computer end analyzes and evaluates the test result of the test subject through the result evaluation software.

The above is only for illustrating the technical idea of the present utility model, and the protection scope of the present utility model is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present utility model falls within the protection scope of the claims of the present utility model.

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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