CN114869217A - Eye shielding plate system for vision test - Google Patents
Eye shielding plate system for vision test Download PDFInfo
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- 238000012360 testing method Methods 0.000 title claims abstract description 56
- 230000004438 eyesight Effects 0.000 title claims abstract description 40
- 230000000007 visual effect Effects 0.000 claims abstract description 88
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 74
- 230000004304 visual acuity Effects 0.000 claims abstract description 36
- 230000003993 interaction Effects 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 230000004044 response Effects 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 4
- 238000009825 accumulation Methods 0.000 description 6
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
- A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
- A61B3/032—Devices for presenting test symbols or characters, e.g. test chart projectors
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/0016—Operational features thereof
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisions for transferring data to distant stations, e.g. from a sensing device
- G06K17/0025—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisions for transferring data to distant stations, e.g. from a sensing device the arrangement consisting of a wireless interrogation device in combination with a device for optically marking the record carrier
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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- G—PHYSICS
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- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
- G10L2015/225—Feedback of the input speech
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Abstract
The invention relates to the technical field of vision test, and discloses an eye shield system for vision test, which comprises a liquid crystal vision chart and an eye shield, wherein data transmission can be carried out between the liquid crystal vision chart and the eye shield; the liquid crystal visual acuity chart displays and randomly marks visual targets after the identification unit identifies the user information, and the marked visual target patterns are transmitted to the main control unit through the Bluetooth unit. According to the invention, through the information interaction between the eye shielding plate and the liquid crystal visual acuity chart, the eye shielding plate carries out voice prompt of related operation according to the test requirement of the liquid crystal visual acuity chart so as to achieve unmanned test, the condition that the visual acuity test is blocked due to communication obstacle existing between medical care personnel and a user in the traditional visual acuity test is avoided, meanwhile, the information interaction between the eye shielding plate and the liquid crystal visual acuity chart also reduces the labor cost, and the efficiency is high.
Description
Technical Field
The invention relates to the technical field of vision tests, in particular to an eye covering plate system for the vision tests.
Background
The eye shielding plate is a tool for vision test, and when testing the vision of the left eye and the right eye, one eye needs to be covered by the eye shielding plate. Conventional eye shields are typically a flap or scoop-like item that only shields the eyes.
When traditional eye shield used, needed medical personnel's cooperation could accomplish the eyesight test usually, and efficiency is lower, and when user and doctor-patient personnel had the communication obstacle, can't effectively just carry out the test of eyesight fast.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an eye shield system for vision test, which has the advantages of information interaction between the eye shield and a liquid crystal visual acuity chart, self-help vision test and the like, and solves the problems that the vision test can be completed by the cooperation of medical personnel when the traditional eye shield is used, the efficiency is low, and the vision test cannot be effectively and quickly performed when the communication between a user and doctors and patients is obstructed.
(II) technical scheme
In order to solve the technical problems that when the traditional eye shield is used, the vision test can be usually completed by the cooperation of medical staff, the efficiency is low, and the vision test cannot be effectively and quickly performed when the communication between a user and the medical staff is obstructed, the invention provides the following technical scheme:
an eye shield system for vision tests comprises a liquid crystal vision chart and an eye shield, wherein data transmission can be carried out between the liquid crystal vision chart and the eye shield;
the liquid crystal visual acuity chart displays visual targets and marks the visual targets randomly after the identification unit identifies the user information, and the marked optotype pattern is transmitted to the main control unit through the Bluetooth unit, the main control unit receives the optotype pattern marked by the liquid crystal visual chart and an operation instruction and then controls the voice unit to conduct voice guidance, a user refers to the voice guidance and answers the displayed and marked optotype through the operation unit according to the liquid crystal visual chart, the operation unit transmits the response data to the main control unit, the main control unit receives the response data transmitted by the operation unit and then compares the visual target style represented by the response data with the visual target style marked by the received liquid crystal visual acuity chart to judge whether the response data of the user is correct or not, and acquiring a judgment result, and transmitting the judgment result to the liquid crystal visual chart through the Bluetooth unit so as to provide reference for the liquid crystal visual chart to perform visual target switching.
Preferably, the recognition unit is a scanner, the scanner is fixedly mounted on the eye shielding plate, the scanner is electrically connected with the main control unit to transmit the identity information recognized by the scanner to the main control unit, the main control unit transmits the received identity information to the voice unit after data conversion, and the voice unit performs voice broadcast according to the data of the identity information transmitted by the main control unit so as to check the user information.
Preferably, the voice unit includes megaphone, adapter and audio encoder, the main control unit with audio encoder electric connection, in order to be used for through audio encoder realize with the data transmission of megaphone and adapter, the main control unit with received identity information transmit to after the conversion of data audio encoder, audio encoder basis the data of the identity information that the main control unit transmitted carries out the audio frequency and transmits to the megaphone after the conversion and carries out voice broadcast.
Preferably, the operation unit is a voice interaction, and the voice interaction is:
the user answers the displayed and marked visual target according to the liquid crystal visual chart in a voice mode, the pickup acquires answering sound information, the answering sound information is transmitted to the audio encoder, the audio encoder converts the answering sound information and transmits the answering sound information to the main control unit, and the main control unit compares the visual target style represented by the answering sound information with the visual target style marked by the liquid crystal visual chart received by the main control unit to judge whether the answering data of the user is correct or not and acquires a judgment result.
Preferably, the operation unit is a key unit, the eye-shielding plate is provided with a plurality of style keys with different styles, a user selects one style key to click according to a visual target displayed and marked by the liquid crystal visual chart, the main control unit obtains the visual target style represented by the style key clicked by the user, compares the visual target style with the visual target style marked by the liquid crystal visual chart received by the main control unit to judge whether the user answers the data correctly, and obtains a judgment result.
Preferably, hide the eye board and include the handle and hide the eye groove, the one end fixed mounting of handle hide the eye groove, the other end has been seted up and has been hung logical groove in order to be used for placing the handle, hide the back fixed mounting of eye groove have the scanner, battery jar, sound conversion groove, controller mounting groove have been seted up to the back of handle.
Preferably, the battery slot is used for installing a storage battery to provide power support for each element on the eye shielding plate, the controller is fixedly installed in the controller installation slot, and the loudspeaker, the sound pickup and the audio encoder are fixedly installed in the sound conversion slot.
(III) advantageous effects
Compared with the prior art, the invention provides an eye shield system for vision test, which has the following beneficial effects:
carry out the interaction of information between through hiding eyeplate and the liquid crystal visual acuity chart to make hide the eyeplate carry out the voice prompt of relevant operation according to the test demand of liquid crystal visual acuity chart in order to reach unmanned test, when having avoided traditional visual acuity test, there is the interchange obstacle to lead to the obstructed condition of visual acuity test between medical personnel and the user, and the information interaction that hides between eyeplate and the liquid crystal visual acuity chart simultaneously has also reduced the cost of labor, and is efficient.
Drawings
FIG. 1 is one of the three-dimensional structures of the present invention;
FIG. 2 is a second perspective view of the present invention;
fig. 3 is an internal structural view of the present invention.
In the figure: 1. a controller; 2. an eye shielding plate; 201. a handle; 202. an eye shielding groove; 203. hanging the through groove; 204. a battery case; 205. a sound conversion groove; 206. a controller mounting groove; 207. a storage battery; 3. a scanner; 4. a loudspeaker; 5. a sound pickup; 6. an audio encoder; 7. style buttons.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As described in the background, the prior art has shortcomings, and in order to solve the above technical problems, the present application provides an eye shield system for vision test.
Referring to fig. 1-3, an eye shield system for vision testing comprises a liquid crystal vision chart and an eye shield 2, wherein data transmission can be performed between the liquid crystal vision chart and the eye shield 2, a controller 1 is arranged in the eye shield 2, the controller 1 comprises a main control unit and a bluetooth unit, and a recognition unit, a voice unit and an operation unit are further arranged on the eye shield 2;
the liquid crystal visual acuity chart displays visual targets and marks the visual targets randomly after the identification unit identifies the user information, and the marked sighting mark patterns are transmitted to the main control unit through the Bluetooth unit, the main control unit receives the sighting mark patterns marked by the liquid crystal visual chart and an operation instruction and then controls the voice unit to carry out voice guidance, a user refers to the voice guidance and answers the sighting mark patterns displayed and marked by the liquid crystal visual chart through the operation unit, the operation unit transmits the response data to the main control unit, the main control unit receives the response data transmitted by the operation unit and then compares the visual target style represented by the response data with the visual target style marked by the received liquid crystal visual acuity chart to judge whether the response data of the user is correct or not, and acquiring a judgment result, and transmitting the judgment result to the liquid crystal visual chart through the Bluetooth unit so as to provide reference for the liquid crystal visual chart to perform visual target switching.
So that after the user identifies the identity information by the identification unit, the main control unit sends a test starting instruction to the liquid crystal visual chart, the liquid crystal visual chart starts to display and randomly mark the visual targets, after the marking is finished, the liquid crystal force application table sends the visual target style marked by the liquid crystal visual chart and an operation instruction to the main control unit, the main control unit sends the instruction to the voice unit according to the operation instruction so that the voice unit carries out voice broadcasting to guide the user to operate on the eye shield (namely, the user refers to voice guidance and answers the visual target displayed and marked by the liquid crystal visual chart through the operation unit), the visual target style indicated by the operation result is compared with the received visual target style marked by the liquid crystal visual chart to judge whether the data answered by the user is correct or not, and acquiring a judgment result, and transmitting the judgment result to the liquid crystal visual chart through the Bluetooth unit so as to provide reference for the liquid crystal visual chart to perform visual target switching.
Carry out the interaction of information between through hiding eyeplate 2 and the liquid crystal visual acuity chart to make to hide eyeplate 2 and carry out the voice prompt of relevant operation in order to reach the unmanned test according to the test demand of liquid crystal visual acuity chart, when having avoided traditional visual acuity test, there is the interchange obstacle to lead to the obstructed condition of visual acuity test between medical personnel and the user, and the information interaction that hides between eyeplate 2 and the liquid crystal visual acuity chart has also reduced the cost of labor simultaneously, and is efficient.
Further, the recognition unit is scanner 3, scanner 3 fixed mounting be in on the eye-shading board 2, scanner 3 with main control unit electric connection to the identity information transmission to the main control unit that will scanner 3 discernment, the main control unit transmits received identity information to the voice unit after the conversion of data, and the voice unit carries out voice broadcast according to the data of the identity information that the main control unit transmitted in order to be used for the check of user information.
During the concrete operation, scanner 3 is preferably the camera, and what the scanner scanned is two-dimensional code or bar code, the user is before carrying out the eyesight test, at first can register personal information in order to obtain the bracelet, be printed with two-dimensional code or bar code on the bracelet, when the user carries out the eyesight test, scan two-dimensional code or bar code with scanner 3, will obtain the identity information that this two-dimensional code or bar code represent, after identity information transmission to the master control unit, the master control unit transmits to the speech unit and broadcasts the newspaper, whether to make the user confirm for oneself's bracelet, avoid appearing phenomenon such as wrong taking.
Further, information contained in the two-dimensional code or the bar code is stored in the cloud server, and after the test is completed, the test result is synchronously read and written under the two-dimensional code or the bar code (namely, in the cloud server).
Further, voice unit includes megaphone 4, adapter 5 and audio coder 6, the main control unit with 6 electric connection of audio coder, in order to be used for passing through 6 realization of audio coder with the data transmission of megaphone 4 and adapter 5, the main control unit with received identity information through the conversion back transmission of data extremely audio coder 6, audio coder 6 basis the data of the identity information that the main control unit transmitted carries out the audio frequency and carries out voice broadcast to megaphone 4 after the conversion.
The liquid crystal visual acuity test chart is an automatic visual acuity test chart, the operation steps of the automatic visual acuity test chart are automatic and fixed programs, the liquid crystal visual acuity test chart and the eye shielding plate 2 are connected through the Bluetooth or the local area network, data interaction is carried out between the liquid crystal visual acuity test chart and the user, the operation which needs to be carried out by the user in each step is converted into an instruction and transmitted to the main control unit, the main control unit carries out data conversion on the instruction and then sends the instruction to the audio encoder 6, the audio encoder 6 carries out voice broadcast on the loudspeaker 4 after carrying out audio conversion on the data of the identity information transmitted by the main control unit, and meanwhile voice broadcast is carried out on other instruction information so as to carry out operation guidance on the user.
The specific operation instructions are as follows:
after the two-dimensional code or the bar code is scanned by the scanner, the information of 'successful scanning' or 'user name, gender, class, age, school of reading' is reported;
according to the step of testing the eyesight by the liquid crystal visual acuity chart, an instruction is sent to the eye shielding plate 2, so that the voice unit broadcasts 'please select left eye test' or 'please select right eye test', namely, the user is reminded to shield the right eye by the eye shielding plate when testing the left eye, the left eye is shielded by the eye shielding plate when testing the right eye, then after the visual target is displayed and randomly marked on the liquid crystal visual acuity chart, the voice unit broadcasts 'please speak out the direction of the notch according to the notch of E, such as leftward, rightward, downward and upward', namely, the user is reminded to answer the visual target displayed and marked on the liquid crystal visual acuity chart through the operation unit, and after the test is finished, 'test finished' and the like are broadcasted.
Further, the operation unit is a voice interaction, and the voice interaction is:
the user answers the displayed and marked sighting target according to the liquid crystal visual chart in a voice mode, the pickup 5 acquires answering sound information and then transmits the answering sound information to the audio encoder 6, the audio encoder 6 converts the answering sound information and then transmits the answering sound information to the main control unit, and the main control unit compares the sighting target style represented by the answering sound information with the sighting target style marked by the liquid crystal visual chart received by the main control unit to judge whether the user answers the data correctly and acquires a judgment result.
Or the operation unit is a key unit, the eye shielding plate 2 is provided with a plurality of style keys with different styles, a user selects one style key to click according to the visual target displayed and marked by the liquid crystal visual chart, the main control unit obtains the visual target style represented by the style key clicked by the user, and compares the visual target style with the visual target style marked by the liquid crystal visual chart received by the main control unit to judge whether the answering data of the user is correct, and obtains the judgment result.
Through two operation forms, a diversified answering mode is provided for the user so as to meet the requirements of the user under different conditions.
Further, the eye shielding plate 2 comprises a handle 201 and an eye shielding groove 202, one end of the handle 201 is fixedly provided with the eye shielding groove 202, the other end of the handle 201 is provided with a hanging through groove 203 for placing the handle 201, the back surface of the eye shielding groove 202 is fixedly provided with the scanner 3, and the back surface of the handle 201 is provided with a battery groove 204, a sound conversion groove 205 and a controller installation groove 206.
The battery case 204 is used for installing a storage battery 207 to provide power support for each element on the eye-shielding plate 2, the controller 1 is fixedly installed in the controller installation groove 206, and the microphone 4, the sound pickup 5 and the audio encoder 6 are fixedly installed in the sound conversion groove 205.
Example two: based on the embodiment 1
The principle of the liquid crystal visual chart is as follows:
the user connects the eye shielding plate 2 with the liquid crystal visual acuity chart in a Bluetooth or wireless network mode, namely, the eye shielding plate 2 is communicated with a Bluetooth circuit unit of the liquid crystal visual acuity chart through a Bluetooth unit of the eye shielding plate 2, so that a data interaction channel is formed between the eye shielding plate 2 and a microcontroller of the liquid crystal visual acuity chart, and data interaction between the eye shielding plate 2 and the liquid crystal visual acuity chart is convenient;
taking an E-shaped visual target library (the number of layers H of the E-shaped visual target library is 10, and the specification of each layer corresponds to the numerical value of one fifth record value in the table),
selecting any specification of the liquid crystal visual chart as an initial sighting mark, and assuming that the selected specification is 4.2, the number J of layers corresponding to 4.2 is 3;
the processing module of the liquid crystal visual acuity chart randomly calls K of 3-layer visual targets corresponding to the specification 4.2, wherein the K value is 3, the 3 randomly called visual targets are transmitted to the liquid crystal display unit through the data transmission circuit unit to be displayed, meanwhile, the processing module displays any mark on the visual targets displayed by the liquid crystal display unit and obtains the gap direction of the marked and displayed visual targets, wherein the mark is displayed as an arrow displayed below the visual target needing to be marked, and the arrow is enough for a user to see;
the user selects the gap direction of the visual target pointed by the arrow on the eye shielding plate 2 according to the visual target pointed by the arrow displayed by the liquid crystal display unit, and after the user clicks the selection, the eye shielding plate 2 compares the selected result with the gap direction of the visual target marked and displayed by the processing module, and transmits the result to the processing module of the liquid crystal display unit;
if the n is consistent with the n, adding one from zero, and if the n is not consistent with the n, not accumulating;
then, the remaining 2 visual targets are selected and compared, if the value of n after accumulation is 2, the value of 2/3 is greater than 0.6, the third layer of the actual vision is described, then the fourth layer is tested as above until the value of the tenth layer or n after accumulation is 1 or 0, and the user visual force value is the specification corresponding to the tenth layer or the specification of the number of layers where the value of n after accumulation is 1 or 0;
otherwise, if the remaining 2 optotypes are selected and compared, if the value of n is 0 or 1 after the three times of accumulation, the probability of the consistency is less than 0.6, the second layer is tested as above until the value of the first layer or n after the accumulation is 2 or 3, and the user vision value is the specification corresponding to the first layer or the specification of the number of layers where the value of n after the accumulation is 2 or 3.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides an eyesight test is with hiding eye plate system, includes liquid crystal eyesight and hides eye plate (2), can carry out data transmission between liquid crystal eyesight and the eye plate (2), it is provided with controller (1), its characterized in that in eye plate (2): the controller (1) comprises a main control unit and a Bluetooth unit, and the eye shielding plate (2) is also provided with a recognition unit, a voice unit and an operation unit;
the liquid crystal visual acuity chart displays visual targets and marks the visual targets randomly after the identification unit identifies the user information, and the marked sighting mark patterns are transmitted to the main control unit through the Bluetooth unit, the main control unit receives the sighting mark patterns marked by the liquid crystal visual chart and an operation instruction and then controls the voice unit to carry out voice guidance, a user refers to the voice guidance and answers the sighting mark patterns displayed and marked by the liquid crystal visual chart through the operation unit, the operation unit transmits the response data to the main control unit, the main control unit receives the response data transmitted by the operation unit and then compares the visual target style represented by the response data with the visual target style marked by the received liquid crystal visual acuity chart to judge whether the response data of the user is correct or not, and acquiring a judgment result, and transmitting the judgment result to the liquid crystal visual chart through the Bluetooth unit so as to provide reference for the liquid crystal visual chart to perform visual target switching.
2. The eye shield system for vision testing of claim 1, wherein: the recognition unit is scanner (3), scanner (3) fixed mounting be in hide on eye plate (2), scanner (3) with main control unit electric connection to the identity information transmission that will scanner (3) discernment to main control unit, main control unit transmits received identity information to voice unit after the conversion of data, and voice unit carries out the voice broadcast according to the data of the identity information that main control unit transmitted in order to be used for the check of user information.
3. The eye shield system for vision testing of claim 2, wherein: the voice unit includes megaphone (4), adapter (5) and audio coder (6), the main control unit with audio coder (6) electric connection, in order to be used for passing through audio coder (6) realize with the data transmission of megaphone (4) and adapter (5), the main control unit with received identity information through the conversion back transmission of data extremely audio coder (6), audio coder (6) basis data of the identity information that the main control unit transmitted carry out the audio frequency after the conversion transmit to megaphone (4) and carry out voice broadcast.
4. The eye shield system for vision testing of claim 3, wherein: the operation unit is a voice interaction which is as follows:
the user carries out voice answering according to the visual target displayed and marked by the liquid crystal visual chart, the pickup (5) acquires answering sound information and then transmits the answering sound information to the audio encoder (6), the audio encoder (6) converts the answering sound information and then transmits the answering sound information to the main control unit, and the main control unit compares the visual target style represented by the answering sound information with the visual target style marked by the liquid crystal visual chart received by the main control unit to judge whether the answering data of the user is correct or not and acquires a judgment result.
5. The eye shield system for vision testing of claim 3, wherein: the operating unit is a key unit, the eye shielding plate (2) is provided with a plurality of style keys (7) with different styles, a user selects one style key (7) to click according to the visual target displayed and marked by the liquid crystal visual chart, the main control unit acquires the visual target style represented by the style key (7) clicked by the user, and compares the visual target style with the visual target style marked by the liquid crystal visual chart received by the main control unit to judge whether the user answers the data correctly, and acquires a judgment result.
6. The eye shield system for vision testing of any one of claims 4 or 5, wherein: hide eye board (2) and include handle (201) and hide eye groove (202), the one end fixed mounting of handle (201) hide eye groove (202), the other end has been seted up and has been hung logical groove (203) in order to be used for placing handle (201), the back fixed mounting who hides eye groove (202) has scanner (3), battery jar (204), sound conversion groove (205), controller mounting groove (206) have been seted up to the back of handle (201).
7. The eye shield system for vision testing of claim 6, wherein: the battery groove (204) is used for installing a storage battery (207) to provide power support for each element on the eye-shielding plate (2), the controller installation groove (206) is fixedly installed on the controller (1), and the sound conversion groove (205) is fixedly installed on the loudspeaker (4), the sound pick-up (5) and the audio encoder (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210389239.7A CN114869217A (en) | 2022-04-14 | 2022-04-14 | Eye shielding plate system for vision test |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210389239.7A CN114869217A (en) | 2022-04-14 | 2022-04-14 | Eye shielding plate system for vision test |
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2022
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| WO2009053917A1 (en) * | 2007-10-23 | 2009-04-30 | Mcgill University | Binocular vision assessment and/or therapy |
| CN110123261A (en) * | 2019-06-26 | 2019-08-16 | 北京体适能体育科技有限公司 | Speech recognition vision tester |
| CN213940692U (en) * | 2020-11-28 | 2021-08-13 | 常州锦颖信息科技有限公司 | Handheld eye shielding device with voice acquisition function and vision examination system |
| CN214906718U (en) * | 2021-03-03 | 2021-11-30 | 北京泓淇科技股份有限公司 | Screening instrument for visual function detection |
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