CN216167379U

CN216167379U - Liquid crystal intelligent interactive visual chart

Info

Publication number: CN216167379U
Application number: CN202121033088.9U
Authority: CN
Inventors: 不公告发明人
Original assignee: Shanghai Baiyang Optometry Technology Co ltd
Current assignee: Shanghai Baiyang Optometry Technology Co ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2022-04-05
Anticipated expiration: 2031-05-14

Abstract

The utility model relates to the technical field of vision detection, in particular to a liquid crystal intelligent interactive visual chart. The visual chart comprises a visual chart body, a base and a shell for clamping and fixing the visual chart body, wherein the shell is fixedly connected with the base through a support; the storage device is used for storing all standard visual target character information in the visual target table; the input device is used for acquiring the judgment information of the orientation of the sighting target characters by the user; and the host is used for carrying out digital conversion on the direction judgment information of the sighting target characters, comparing the direction judgment information with the sighting target characters displayed on the display screen by the character information normalized on the storage device and judging whether the direction judgment information is correct or not. Among the above-mentioned technical scheme, need not manual intervention among the visual detection process, complete automization, information acquisition and data comparison mode are accurate, reduce the error of manual operation, and input device has multiple mode, can change according to measurand needs or place requirement, and is more humanized, and application scope is wide.

Description

Liquid crystal intelligent interactive visual chart

Technical Field

The utility model relates to the technical field of vision detection, in particular to a liquid crystal intelligent interactive visual chart.

Background

The number of Chinese shortsightedness people is the most worldwide, shortsightedness is listed as one of three diseases in the world, the number of national shortsightedness people is nearly 4 hundred million, and the number of teenagers is about 2.7 hundred million. The incidence rate of myopia of the population in China is 33%, which is 1.5 times of the average level of 22% in the world, and accounts for the second place in the world, the number of new myopia is about 6% every year, and the incidence rate of myopia reaches 50% -60%.

The investigation shows that the detection rate of the bad eyesight of the pupils in China is 28%, the detection rate of the junior and middle school students is 60%, the detection rate of the high school students is 85%, the myopia needs to be treated early, and the main means for avoiding the myopia are as follows: the four major modes of reducing the burden of children, developing good eye use habits, increasing outdoor exercises and paying attention to eye health are provided. Therefore, campus myopia census is particularly important.

At present, the visual examination instrument on the market only changes original visual chart lamp box into liquid crystal visual display, connects the function that loaded APP terminal was accomplished automatic and is reported, but its requirement to the place is still very high, and the proportion that the mistake appears is still very high, has only reduced partial physical work slightly, if manual finger vision, fill out the form etc. do not realize real automatic intellectuality, and work efficiency is more general.

Disclosure of Invention

In order to solve the above problems, the present invention aims to provide an intelligent liquid crystal interactive visual acuity chart, which greatly utilizes an artificial intelligence interaction technology, can automatically change an interaction mode according to an environmental condition, reduces human resource waste in a detection process, realizes whole-course autonomy, greatly avoids errors caused by manual operation, and greatly improves the efficiency of vision census.

In order to achieve the purpose, the utility model adopts the following technical scheme: including visual chart body, base and press from both sides the shell of dress fixed with the visual chart body, through support fixed connection, its characterized in that between shell and the base:

the visual chart body comprises a display screen for displaying visual target characters;

the storage device is used for storing all standard visual target character information in the visual target table;

the input device is used for acquiring the judgment information of the orientation of the sighting target characters by the user;

and the host is used for carrying out digital conversion on the direction judgment information of the sighting target characters, comparing the direction judgment information with the sighting target characters displayed on the display screen by the character information normalized on the storage device and judging whether the direction judgment information is correct or not.

In the technical scheme, during visual inspection, the display screen displays the sighting target characters, the direction of the sighting target is judged by the tested person through interaction with the input device, the input device transmits information for judging the sighting target characters to the host, and the host processes the information and compares the information with standard sighting target character information on the storage device to judge whether the information is correct, so that the inspection process is completed. The process has the advantages that manual intervention is not needed, the process is completely autonomous, the information acquisition and data comparison modes are accurate, the errors of manual operation are reduced, the input device has multiple modes, the input device can be replaced according to the needs of testees or the requirements of sites, and the input device is more humanized and wide in application range.

Preferably, the input device is connected with the host through an external interface and comprises one or more of a high-definition capture camera, a microphone and a remote controller; the high-definition capturing camera is used for shooting an image of a gesture of a marker within a specified distance; the microphone is used for recording and acquiring voice sample fragments; the remote controller is used for transmitting signals of the key pressing direction to the host. In the technical scheme, three interaction modes are provided between the input device and the tested person, the high-definition capturing camera captures images, the microphone records voice, and the remote controller presses direction keys.

Preferably, when the input device adopts a high-definition capturing camera, the host computer preprocesses the gesture image captured by the high-definition capturing camera, extracts the gesture image marker, compares the gesture image marker with a marker gallery on the storage device and judges whether the gesture image marker is correct or not. According to the technical scheme, when the input device adopts the high-definition capturing camera, the image comparison is carried out, the standard sighting target character information on the storage device comprises the marker database, and the gesture image shot by the high-definition capturing camera is compared with the marker database through the host processing, so that the alignment error is easily judged.

Preferably, when the input device adopts a microphone, the host computer preprocesses a voice sample obtained by recording the microphone, extracts key sounds of the voice sample, compares the key sounds with a voice sample library on the storage device and judges whether the key sounds are correct or not. In the technical scheme, when the input device adopts the microphone, the input device compares the input device with the microphone through voice, the visual target character information specified on the storage device contains a voice sample library, and the voice fragments recorded by the microphone are compared with the voice sample library through host processing so as to easily judge the alignment error.

Preferably, when the input device is a remote controller, the host machine processes a signal fed back by the remote controller, matches the signal with a standard optotype character, and judges whether the signal is correct. In the technical scheme, when the input device adopts a remote controller, the standard sighting target character information on the storage device comprises correct sighting target character orientation through the comparison of the direction of pressing the key, the direction input of the key on the remote controller represents that a tester judges the direction of the sighting target, and the host receives a signal fed back by the remote controller and directly compares the signal with the correct sighting target character to easily judge the alignment error.

Preferably, the storage device and the host are installed on a functional mainboard, the display mainboard is installed on the inner wall of the display screen, the functional mainboard is arranged above the display mainboard and is fixedly installed on the display screen, and the high-definition capture camera is arranged above the touch liquid crystal screen. Among this technical scheme, storage device all installs on the function mainboard with the host computer, and the function mainboard setting just all installs the inboard at the display screen in the top that shows the mainboard, and the structure sets up rationally, and integrated mode is simple, makes the area occupied of visual chart body less, and application scope is wide.

Preferably, the shell comprises a front frame and a rear panel, the front frame is abutted and spliced with the rear panel, the support is fixedly connected with the lower end of the rear panel, and the high-definition capturing camera is embedded in the center of the upper end of the front frame. Among this technical scheme, the high definition is caught the camera setting and is put at upper end central point, and the scope of ingesting is best, and so sets up more pleasing to the eye.

Preferably, a plurality of external interfaces are arranged on the side wall of the rear panel, and the inner ends of the external interfaces are sequentially connected with the function main board and the display main board from top to bottom; and a plurality of buttons are arranged on the side wall of the front frame and used for controlling the on-off of a power supply and the lumen brightness of the display screen. In the technical scheme, the external interface is used for connecting the input device with the functional main board.

Preferably, a Bluetooth wireless connection module is further embedded in the function mainboard and used for wireless connection and Bluetooth transmission functions of the function mainboard. In the technical scheme, the Bluetooth wireless connection module provides networking and transmission functions.

Drawings

Fig. 1 is a schematic perspective view of an intelligent liquid crystal interactive visual acuity chart.

Fig. 2 is a schematic front view structure diagram of an intelligent liquid crystal interactive visual chart.

FIG. 3 is a schematic diagram of an exploded structure of an intelligent interactive eye chart with liquid crystal display.

FIG. 4 is a schematic diagram of a side view of an external display interface of an intelligent interactive visual chart.

FIG. 5 is a schematic diagram of a side view of a display button of an intelligent interactive eye chart.

FIG. 6 is a diagram of the steps of image recognition for an intelligent interactive eye chart with liquid crystal.

FIG. 7 is a diagram of the steps of speech recognition for a liquid crystal intelligent interactive eye chart.

FIG. 8 is a diagram illustrating the steps of key direction identification for an intelligent interactive eye chart with liquid crystal display.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The liquid crystal intelligent interactive visual acuity chart shown in fig. 1-5 is used for autonomous vision detection, and comprises a visual acuity chart body 1, a base 2 and a shell 3 for clamping and fixing the visual acuity chart body 1, wherein the shell 3 is fixedly connected with the base 2 through a support 4, and the visual acuity chart body 1 comprises a display screen 5 for displaying visual target characters; the storage device is used for storing all standard visual target character information in the visual target table; the input device is used for acquiring the judgment information of the orientation of the sighting target characters by the user; and the host is used for carrying out digital conversion on the direction judgment information of the sighting target characters, comparing the direction judgment information with the sighting target characters displayed on the display screen 5 by the character information normalized on the storage device and judging whether the direction judgment information is correct or not. In the technical scheme, during visual inspection, the display screen 5 displays the sighting target characters, the direction of the sighting target is judged by interaction of a tested person and the input device, the input device transmits information for judging the sighting target characters to the host, and the host processes the information and compares the information with standard sighting target character information on the storage device to judge whether the information is correct, so that the inspection process is completed. The process has the advantages that manual intervention is not needed, the process is completely autonomous, the information acquisition and data comparison modes are accurate, the errors of manual operation are reduced, the input device has multiple modes, the input device can be replaced according to the needs of testees or the requirements of sites, and the input device is more humanized and wide in application range.

Here, the display screen is a liquid crystal touch screen with specified lumens, the touch liquid crystal screen is used for displaying a new visual chart GB11533-2011, and all visual targets in the upper and lower rows of the visual targets are displayed every time the visual targets are adjusted.

Further, the input device is connected with the host through an external interface 100, and comprises one or more of a high-definition capture camera 6, a microphone and a remote controller; the high-definition capturing camera 6 is used for shooting an image of a gesture of a marker out of a specified distance; the microphone is used for recording and acquiring voice sample fragments; the remote controller is used for transmitting the signal of the key pressing direction to the host. When the input device adopts the high-definition capturing camera 6, the host computer preprocesses the gesture image shot by the high-definition capturing camera 6, extracts the gesture image marker, compares the gesture image marker with the marker gallery on the storage device and judges whether the gesture image marker is correct or not. When the input device adopts a microphone, the host computer preprocesses a voice sample obtained by the microphone recording, extracts key sounds of the voice sample, compares the key sounds with a voice sample library on the storage device and judges whether the key sounds are correct or not. When the input device adopts a remote controller, the host computer processes the signal fed back by the remote controller and matches the signal with the standard sighting target characters to judge whether the signal is correct or not. In the technical scheme, three interaction modes are provided between the input device and the tested person, the high-definition capturing camera 6 captures images, the microphone records voice, and the remote controller presses direction keys. When the input device adopts the high-definition capturing camera 6, the image comparison is carried out, the standard sighting target character information on the storage device comprises a marker database, and the gesture image shot by the high-definition capturing camera 6 is compared with the marker database through the host processing, so that the alignment error is easily judged. When the input device adopts a microphone, the phonetic comparison is carried out, the visual target character information specified on the storage device comprises a phonetic sample library, and the phonetic fragments recorded by the microphone are compared with the phonetic sample library through the host processing, so that the correct and wrong judgment is easily carried out. When the input device adopts a remote controller, the standard sighting target character information on the storage device comprises correct sighting target character orientation through the comparison of the direction of pressing a key, the direction input of the key on the remote controller represents that a tester judges the direction of the sighting target, and the host machine receives a signal fed back by the remote controller and directly compares the signal with the correct sighting target character to easily judge the alignment error.

Further, storage device and host computer are all installed on a function mainboard 7, and display mainboard 8 is equipped with to the inner wall of display screen 5, and function mainboard 7 sets up in the top that shows mainboard 8 and fixed mounting on display screen 5, and camera 6 setting is caught to the high definition in the top of display screen 5. The shell 3 comprises a front frame 9 and a rear panel 10, the front frame 9 is abutted and spliced with the rear panel 10, the support 4 is fixedly connected with the lower end of the rear panel 10, and the high-definition capturing camera 6 is embedded in the center of the upper end of the front frame 9. A plurality of external interfaces 100 are arranged on the side wall of the rear panel 10, and the inner ends of the external interfaces 100 are sequentially connected with the function main board 7 and the display main board 8 from top to bottom; the side wall of the front frame 9 is provided with a plurality of buttons 11 for controlling the on/off of the power supply and the lumen brightness of the display screen 5. Still inlay on the function mainboard 7 has bluetooth wireless connection module for function mainboard 7's wireless connection and bluetooth transmission function. In this technical scheme, storage device all installs on function mainboard 7 with the host computer, and function mainboard 7 sets up and all installs the inboard at display screen 5 in the top that shows mainboard 8, and the structure sets up rationally, and integrated mode is simple, makes the area occupied of visual chart body less, and application scope is wide. And high definition catches camera 6 and sets up in upper end central point and put, and it is best to absorb the scope, and so set up more pleasing to the eye.

It should be noted here that the display motherboard can set the lumen brightness of the national standard eye chart light box, and the host and the storage device disposed on the functional motherboard are both included in the android system storage module.

In this embodiment, the liquid crystal intelligent interactive visual acuity chart can perform visual acuity test by adopting one or more of image recognition, voice recognition and key direction recognition.

As shown in fig. 6, when the liquid crystal intelligent interactive visual acuity chart adopts image recognition to perform visual acuity test, the input device is a high-definition capturing camera 6, and the image recognition adopts the following steps:

1) selecting gesture image recognition, and displaying a sighting target on the display screen 5;

2) the testee makes a gesture according to the sighting mark, and the high-definition capturing camera 6 captures an image of the gesture of the marker;

3) the host computer carries out preprocessing on the shot image and extracts the gesture image marker;

4) comparing the image characteristics with a marker map library on a storage device to obtain a matching rate threshold;

5) and automatically judging whether to finish the check or continue the next check according to the matching rate threshold.

It should be noted that, if the matching rate threshold in step 5) is lower than 30%, the storage device has a standard identifier gallery, and the storage device is defined as an unknown gesture, and if the matching success frequency of the unknown gesture and the identifier gallery is greater than 10 times, the storage device determines that the gesture is a standard gesture and adds the standard gesture into the identifier gallery.

As shown in fig. 7, when the liquid crystal intelligent interactive visual acuity chart adopts voice recognition to perform visual acuity test, the input device is a microphone, and the voice recognition adopts the following steps:

1) selecting voice and audio recognition, and displaying a sighting target on the display screen 5;

2) the tested person sends out audio according to the visual target, and the microphone records the audio to obtain a voice sample segment;

3) the host computer preprocesses the voice sample and extracts key voice of the voice sample;

4) comparing the key voice of the voice sample with a key voice database to obtain a matching rate threshold;

It should be noted here that, if the matching rate threshold in step 5) is lower than 30%, the storage device has a standard key sound database, and the matching rate threshold is defined as unknown audio, and if the matching success frequency of the unknown audio and the key sound database is greater than 10 times, it is determined as an audio identifier, and the audio identifier is added to the key sound database.

As shown in fig. 8, when the liquid crystal intelligent interactive visual acuity chart adopts the key direction identification for the visual acuity detection, the input device is a remote controller, and the key direction identification adopts the following steps:

2) the tested person presses the key according to the visual target, and the remote controller transmits the key signal to the host;

3) the host machine processes the feedback signal and directly matches with the standard sighting target characters;

4) and automatically judging whether to finish the check or continue the next check according to the matching rate threshold.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.

Claims

1. Mutual visual acuity chart of liquid crystal intelligence for visual acuity test's autonomic going on, including visual acuity chart body (1), base (2) and press from both sides fixed shell (3) of dress with visual acuity chart body (1), through support (4) fixed connection, its characterized in that between shell (3) and base (2):

the visual chart body (1) comprises a display screen (5) for displaying visual target characters;

and the host is used for carrying out digital conversion on the direction judgment information of the sighting target characters, comparing the direction judgment information with the sighting target characters displayed on the display screen (5) by the character information normalized on the storage device and judging whether the direction judgment information is correct or not.

2. The liquid crystal intelligent interactive visual acuity chart of claim 1, wherein: the input device is connected with the host through an external interface (100), and comprises one or more of a high-definition capture camera (6), a microphone and a remote controller; the high-definition capturing camera (6) is used for shooting an image of a gesture of a marker out of a specified distance; the microphone is used for recording and acquiring voice sample fragments; the remote controller is used for transmitting signals of the key pressing direction to the host.

3. The liquid crystal intelligent interactive visual acuity chart of claim 2, wherein: when the input device adopts the high-definition capturing camera (6), the host computer preprocesses the gesture image shot by the high-definition capturing camera (6), extracts the gesture image marker, compares the gesture image marker with the marker gallery on the storage device and judges whether the gesture image marker is correct or not.

4. The liquid crystal intelligent interactive visual acuity chart of claim 2, wherein: when the input device adopts a microphone, the host computer preprocesses a voice sample obtained by recording of the microphone, extracts key sounds of the voice sample, compares the key sounds with a voice sample library on the storage device and judges whether the key sounds are correct or not.

5. The liquid crystal intelligent interactive visual acuity chart of claim 2, wherein: when the input device adopts a remote controller, the host machine processes the signal fed back by the remote controller and matches the signal with the standard sighting target characters to judge whether the signal is correct or not.

6. The liquid crystal intelligent interactive visual acuity chart of claim 2, wherein: storage device all installs on a function mainboard (7) with the host computer, the inner wall of display screen (5) is equipped with and shows mainboard (8), function mainboard (7) set up in the top that shows mainboard (8) and fixed mounting on display screen (5), high definition is caught camera (6) and is set up the top at display screen (5).

7. The liquid crystal intelligent interactive visual acuity chart of claim 6, wherein: the shell (3) comprises a front frame (9) and a rear panel (10), the front frame (9) is abutted and spliced with the rear panel (10), the support (4) is fixedly connected with the lower end of the rear panel (10), and the high-definition capturing camera (6) is embedded in the center of the upper end of the front frame (9).

8. The liquid crystal intelligent interactive visual acuity chart of claim 7, wherein: a plurality of external interfaces (100) are arranged on the side wall of the rear panel (10), and the inner ends of the external interfaces (100) are sequentially connected with the function main board (7) and the display main board (8) from top to bottom; the side wall of the front frame (9) is provided with a plurality of buttons (11) for controlling the on-off of the display power supply and the lumen brightness of the display screen (5).

9. The liquid crystal intelligent interactive visual acuity chart of claim 8, wherein: still inlay on function mainboard (7) and have bluetooth wireless connection module for the wireless connection and the bluetooth transmission function of function mainboard (7).