A vision detection system with eye usage monitoring and analysis function

Abstract

The invention discloses a vision detection system with an eye usage monitoring and analysis function, comprising: a main control module, a high-brightness liquid crystal screen module, a camera array, an optical measurement module, a printer module, a shell and a system control terminal, wherein: the main control module is respectively connected to the high-brightness liquid crystal screen module, the camera array, the optical measurement module and the printer module; the optical measurement module is used to detect the intensity of ambient light; the high-brightness liquid crystal screen module and the main control module perform data exchange, and the high-brightness liquid crystal screen module is used to display the visual mark corresponding to the measured vision and the ambient light intensity; the camera array and the main control module perform data exchange, and the camera array detects the visual distance of all people in the field of vision when they read books with their heads down, the duration of each head down, the visual distance between the person and the blackboard when they look up and the duration of each head up, and then performs eye usage monitoring and analysis; the printer module and the main control module perform data exchange, and the printer module is used to print out corresponding information to assist diagnosis and analysis.

Description

Technical Field

[0001] The invention relates to a medical device, in particular to a vision detection system with the function of monitoring and analyzing eye usage. Background Art

[0002] In recent years, the vision of Chinese teenagers has been declining significantly. Electronic products are "invading" every family at an alarming rate. Televisions, computers, iPads, iPhones, etc. seem to be everywhere. We have unknowingly entered the "multi-screen era". It is impossible for parents and schools to completely isolate teenagers from electronic products, but these electronic products will have an adverse effect on the vision of teenagers. In order to protect the vision of the new generation of children, schools and vision testing centers urgently need a vision testing system that is simple to operate, easy to use, and has eye monitoring and analysis. Summary of the invention

[0003] The present invention provides a vision detection system with an eye usage monitoring and analysis function, so as to overcome the problem that existing traditional equipment cannot provide eye usage monitoring and analysis. The vision detection system provided by the present invention integrates vision detection function, distance measurement function, ambient light intensity measurement function and other functions, which can not only meet the school's needs for vision detection and ambient light intensity measurement, but also can perform intelligent data analysis based on a student's vision, classroom ambient light intensity and the distance between the eyes and books, so as to perform vision health management.

[0004] To achieve the above-mentioned object, the present invention provides a vision detection system with eye monitoring and analysis function, which includes: a main control module, a high-brightness LCD screen module, a camera array, an optical measurement module, a printer module, a housing and a system control terminal, wherein:

[0005] The main control module and the printer module are arranged inside the housing;

[0006] The high-brightness LCD screen module, camera array, and optical measurement module are arranged on the surface of the shell;

[0007] The main control module is connected to the high-brightness LCD screen module, the camera array, the optical measurement module, and the printer module respectively;

[0008] The optical measurement module is used to detect the ambient light intensity;

[0009] The high-brightness LCD screen module exchanges data with the main control module. The high-brightness LCD screen module is used to display the visual mark corresponding to the measured vision and the ambient light intensity;

[0010] The camera array exchanges data with the main control module. The camera array detects the visual distance of all people in the field of view when they lower their heads to read, the duration of each lowering of the head, the visual distance between the blackboard and the head when they raise their heads, and the duration of each raising of the head, so as to monitor and analyze the amount of eye use.

[0011] The printer module exchanges data with the main control module, and the printer module is used to print out corresponding information to assist diagnosis and analysis;

[0012] The system control terminal has two input modes: voice and button. The system control terminal exchanges data and commands with the main control module wirelessly, and controls the vision detection system through the main control module.

[0013] In one embodiment of the present invention, the camera array is arranged directly above the housing and includes a plurality of cameras, and the field of view of the camera array is 360 degrees.

[0014] In one embodiment of the present invention, the camera array measures the distance L of all people within the field of view from the vision detection system. n , the distance L between each person and the vision detection system n At least three pairs of cameras are used to perform compensation calculations, where each pair of cameras contains two cameras, L n =fT 0 / d 0 , f is the focal length of the camera, its dimension is pixel, T 0 is the camera center distance, whose dimension is determined by the actual size of the calibration chessboard and the user input value, and the accuracy is in millimeters. 0 is the parallax, and its dimension is also pixels.

[0015] In one embodiment of the present invention, the optical measurement module includes an optical measurement module control board, a light intensity measurement module, an ultrasonic ranging sensor and a laser ranging sensor, and the light intensity measurement module, the ultrasonic ranging sensor and the laser ranging sensor are all connected to the optical measurement module control board.

[0016] In one embodiment of the present invention, the optical measurement module is disposed at the upper right corner of the housing to detect the ambient light intensity in real time, and the all-day light intensity coefficient P is calculated by the following formula: 1 :

[0017] Among them, 1~m refers to the 1st to mth time of the day, p 1 ~p m Refers to the ambient light intensity corresponding to the 1st to mth moments in a day.

[0018] In one embodiment of the present invention, the ultrasonic distance measuring sensor and the laser distance measuring sensor have a monitoring mode and a detection mode.

[0019] The monitoring mode is that the ultrasonic distance sensor and the laser distance sensor work simultaneously, and the ultrasonic distance sensor and the laser distance sensor are parallel to the blackboard. The distance between the person in the field of view and the vision detection system is ln , l n =(l 1n +l 2n ) / 2, where l 1n is the distance between the person and the vision detection system detected by the ultrasonic ranging sensor, l 2n is the distance between the person and the vision detection system detected by the laser distance sensor.

[0020] The detection mode is the vision detection mode. The ultrasonic ranging sensor and the laser ranging sensor detect the distance H between the person in front and the vision detection system. If the distance H exceeds the preset range, the vision detection system will issue an alarm.

[0021] In one embodiment of the present invention, the printer module includes a 4G module, a WIFI module, a Bluetooth module, a printer module, a power module and a data conversion board, wherein the data conversion board is respectively connected to the main control module and the 4G module, the WIFI module, the Bluetooth module, the printer module and the power module, the 4G module, the WIFI module and the Bluetooth module are used for wireless communication, the printer module is used for printing a response to the required output data, and the power module is used for power supply.

[0022] In one embodiment of the present invention, the camera array is parallel to the blackboard in front, and the camera array inputs the captured image into a grid table. Each subgrid in the grid table is a square with a side length of 2 cm. The features of both eyes and the features of the book / desk are obtained through face recognition, and then the visual distance of looking down to read is calculated to obtain the visual distance h of looking down to read. n and the duration of each bow n .

[0023] In one embodiment of the present invention, the myopia probability U of each person is calculated using the following formula:

[0024] U=T 0 +T 1 -T 2 +D 0 +P 1

[0025] Among them, T 0 Refers to the full-day after-school time, T 2 Refers to excessive eye use throughout the day. T 1 Refers to the time spent looking at the blackboard throughout the day. T n is the duration of looking at the blackboard each time, D 0 Refers to the weighted value of the information of the student's age, myopia degree of both parents, and gender.

[0026] In one embodiment of the present invention, the main control module includes a data wired transceiver unit, a data wireless transceiver unit, a control unit and a data storage unit. One end of the data wired transceiver unit is connected to the high-brightness LCD screen module, the camera array, the optical measurement module and the printer module, and the other end is connected to the control unit. The control unit is used to control the components connected thereto.

[0027] The data wireless transceiver unit is connected to the control unit and is used to wirelessly connect to the system control end for remote data transmission.

[0028] The data storage unit is connected with the control unit.

[0029] The vision detection system with eye usage monitoring and analysis provided by the present invention obtains eye usage data by monitoring the visual distance and time of students lowering their heads to read and the visual distance and time of students raising their heads to look at the blackboard. The eye usage data is combined with basic information of students, such as gender, age, myopia degree of parents, etc., to determine the probability of myopia. It can not only meet the school's needs for vision detection and ambient light intensity measurement, but also can perform intelligent analysis of students' eye usage and myopia probability, and then perform vision health management. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A schematic diagram of the structure of a vision detection system with eye usage monitoring and analysis functions provided by the present invention;

[0032] Figure 2 It is a structural schematic diagram of an optical measurement module;

[0033] Figure 3 It is a structural schematic diagram of the printer module;

[0034] Figure 4 This is a schematic diagram of the structure of the main control module;

[0035] Figure 5 is a schematic diagram of a camera array;

[0036] Figure 6 FIG. 4 is a schematic diagram of imaging and ranging in one embodiment of the present invention.

[0037] Explanation of the accompanying drawings: 1-main control module; 11-wired data transceiver unit; 12-wireless data transceiver unit; 13-control unit; 14-data storage unit; 2-high-brightness LCD screen module; 3-camera array; 4-optical measurement module; 41-optical measurement module control board; 42-light intensity measurement module; 43-ultrasonic ranging sensor; 44-laser ranging sensor; 5-printer module; 6-housing; 7-system control terminal; 51-4G module; 52-WIFI module; 53-Bluetooth module; 54-printer module; 55-power module; 56-data conversion board. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The application scenario of the present invention is the classroom, and the monitoring object is students. It mainly monitors the visual distance of all students in the classroom when they lower their heads to read, the duration of each lowering of their heads, the visual distance between them and the blackboard when they raise their heads, and the duration of each raising of their heads. Figure 1 The structure diagram of the vision detection system with the function of monitoring and analyzing the amount of eye use provided by the present invention is as follows: Figure 1 As shown, the vision detection system with eye usage monitoring and analysis function provided by the present invention includes: a main control module 1, a high-brightness LCD screen module 2, a camera array 3, an optical measurement module 4, a printer module 5, a housing 6 and a system control terminal 7, wherein:

[0040] The main control module 1 and the printer module 5 are arranged inside the housing 6;

[0041] The high-brightness LCD screen module 2, the camera array 3, and the optical measurement module 4 are arranged on the surface of the housing;

[0042] The main control module 1 is connected to the high brightness LCD module 2, the camera array 3, the optical measurement module 4, and the printer module 5 respectively;

[0043] The optical measurement module 4 is used to detect the ambient light intensity;

[0044] The high-brightness LCD screen module 2 exchanges data with the main control module 1. The high-brightness LCD screen module 2 is used to display the visual mark corresponding to the measured vision and the ambient light intensity. In the present invention, the high-brightness LCD screen module 2 is preferably an LCD screen with a brightness value greater than 500 nits.

[0045] The camera array 3 exchanges data with the main control module 1, and detects the visual distance of all people in the field of vision when they lower their heads to read, the duration of each lowering of the heads, the visual distance between the blackboard and the head when they raise their heads, and the duration of each raising of the heads, so as to monitor and analyze the amount of eye use;

[0046] The printer module 5 exchanges data with the main control module 1, and the printer module 5 is used to print out corresponding information to assist diagnosis and analysis;

[0047] The system control terminal 7 has two input modes: voice and key input. The system control terminal 7 exchanges data and commands with the main control module wirelessly, and controls the vision detection system through the main control module.

[0048] In the present invention, the eye chart is displayed on the high-brightness LCD module 2, and the user can perform key selection and voice control through the system control terminal 7; key selection refers to selecting the corresponding key value according to the output corresponding visual mark, such as the visual mark facing the right side, that is, the user presses the direction key on the system control terminal 7. Voice control refers to selecting the corresponding key value according to the output corresponding visual mark, such as the visual mark facing the right side, that is, the user voice inputs "right" on the system control terminal 7.

[0049] In the present invention, the camera array 3 is arranged directly above the housing 6 and includes a plurality of cameras, such as Figure 5 Shown is a schematic diagram of a camera array, which includes multiple cameras. The camera array has a field of view of 360 degrees, so as to fully monitor every student in the classroom without missing any.

[0050] The camera array 3 measures the distance Ln of all people within the field of view from the vision detection system, and the distance Ln of each person from the vision detection system n At least three pairs of cameras are used to perform compensation calculations, where each pair of cameras contains two cameras, L n =fT 0 / d 0 , f is the focal length of the camera, its dimension is pixel, T 0 is the camera center distance, whose dimension is determined by the actual size of the calibration chessboard and the user input value, and the accuracy is in millimeters. 0 is the parallax, and its dimension is also pixels.

[0051] Figure 2 is a schematic diagram of the structure of the optical measurement module, such as Figure 2 As shown, the optical measurement module 4 includes an optical measurement module control board 41, a light intensity measurement module 42, an ultrasonic distance measurement sensor 43 and a laser distance measurement sensor 44, and the light intensity measurement module 42, the ultrasonic distance measurement sensor 43 and the laser distance measurement sensor 44 are all connected to the optical measurement module control board 41.

[0052] The optical measurement module 4 is arranged at the upper right of the housing 6 and is used to detect the ambient light intensity in real time and calculate the all-day light intensity coefficient P by the following formula: 1 :

[0053] Among them, 1~m refers to the 1st to mth time of the day, p 1 ~p m Refers to the ambient light intensity corresponding to the 1st to mth moments in a day.

[0054] The ultrasonic distance measuring sensor 43 and the laser distance measuring sensor 44 have a monitoring mode and a detection mode.

[0055] The monitoring mode is that the ultrasonic distance sensor 43 and the laser distance sensor 44 work simultaneously, and the ultrasonic distance sensor 43 and the laser distance sensor 44 are parallel to the blackboard. The distance between the person in the field of view and the vision detection system is l n , l n =(l 1n +l 2n ) / 2, where l 1n is the distance between the person and the vision detection system detected by the ultrasonic ranging sensor, l 2n It is the distance between the person and the vision detection system detected by the laser ranging sensor. The distance here refers to the horizontal distance.

[0056] The detection mode is the vision detection mode. The ultrasonic distance sensor 43 and the laser distance sensor 44 detect the distance H between the person in front and the vision detection system. If the distance H exceeds the preset range, the vision detection system will issue an alarm. The distance H is also the horizontal distance.

[0057] Figure 3 It is a structural diagram of the printer module, such as Figure 3 As shown, the printer module 5 includes a 4G module 51, a WIFI module 52, a Bluetooth module 53, a printer module 54, a power module 55 and a data conversion board 56, wherein the data conversion board 56 is respectively connected to the main control module 1 and the 4G module 51, the WIFI module 52, the Bluetooth module 53, the printer module 54, and the power module 55; the 4G module 51, the WIFI module 52, and the Bluetooth module 53 are used for wireless communication; the printer module 54 is used for printing a response to the required output data; and the power module 55 is used for power supply.

[0058] The camera array 3 is parallel to the blackboard in front of it. The camera array 3 inputs the captured image into a grid table. Each grid in the grid table is a square with a side length of 2 cm. The features of both eyes and the features of the book / desk are obtained through face recognition, and then the visual distance of looking down to read is calculated to obtain the visual distance h of looking down to read.n and the duration of each bow n .

[0059] The probability of myopia for each person, U, is calculated using the following formula:

[0060] U=T 0 +T 1 -T 2 +D 0 +P 1

[0061] Among them, T 0 Refers to the full-day after-school time, T 2 Refers to excessive eye use throughout the day. T 1 Refers to the time spent looking at the blackboard throughout the day. T n is the duration of looking at the blackboard each time, D 0 Refers to the weighted value of the information of the student's age, myopia degree of both parents, and gender.

[0062] For example, a primary school student: male, 9 years old, both parents are myopic 500°, the weighted value of excessive eye use time is 60, the weighted value of extracurricular time is 200, the weighted value of blackboard viewing time is 320, and the light intensity coefficient F is 200. 1 is 6 00; then:

[0063] P = 200-60+320+80 = 540;

[0064] When the P value is less than 300, the vision is in a serious state, and big data will give detailed personalized advice, such as how to carry out vision training plans, private eye massage plans, etc.

[0065] When the P value is 300≤P<500, vision is in a dangerous state, and big data will give detailed personalized advice, such as how to carry out vision training plans, private eye massage plans, etc.

[0066] When the P value is greater than or equal to 500, the vision is within a safe range, and the LCD module prompts you to continue to maintain good eye habits.

[0067] Figure 4 This is a schematic diagram of the structure of the main control module, such as Figure 4 As shown, the main control module 1 includes a data wired transceiver unit 11, a data wireless transceiver unit 12, a control unit 13 and a data storage unit 14. One end of the data wired transceiver unit 11 is connected to the high-brightness LCD screen module 2, the camera array 3, the optical measurement module 4, and the printer module 5, and the other end is connected to the control unit 13. The control unit 13 is used to control the components connected thereto.

[0068] The data wireless transceiver unit 12 is connected to the control unit 13 and is used for wirelessly connecting to the system control terminal 7 for remote data transmission.

[0069] The data storage unit 14 is connected to the control unit 13 .

[0070] Figure 6 FIG. 1 is a schematic diagram of imaging and ranging in one embodiment of the present invention. Figure 6 As shown in the figure, the side length of each small square inside is 2cm. The camera captures the image of each student in a full face capture mode, identifies the features of both eyes and books / desks, and then calculates the distance between the eyes and the books / desks. As shown in the figure, the distance between the eyes of the student and the book is 12 grids, that is, the viewing distance is 24cm.

[0071] The vision detection system with eye usage monitoring and analysis provided by the present invention obtains eye usage data by monitoring the visual distance and time of students lowering their heads to read and the visual distance and time of students raising their heads to look at the blackboard. The eye usage data is combined with basic information of students, such as gender, age, myopia degree of parents, etc., to determine the probability of myopia. It can not only meet the school's needs for vision detection and ambient light intensity measurement, but also can perform intelligent analysis of students' eye usage and myopia probability, and then perform vision health management.

[0072] Those skilled in the art can understand that the accompanying drawings are only schematic diagrams of an embodiment, and the modules or processes in the accompanying drawings are not necessarily required to implement the present invention.

[0073] Those skilled in the art can understand that the modules in the device in the embodiment can be distributed in the device in the embodiment according to the description of the embodiment, or can be changed accordingly and located in one or more devices different from the embodiment. The modules in the above embodiment can be combined into one module, or can be further divided into multiple sub-modules.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vision detection system with the function of monitoring and analyzing eye usage, characterized in that: include: Main control module, high brightness LCD screen module, camera array, optical measurement module, printer module, housing and system control terminal, including: The main control module and the printer module are arranged inside the housing; The high-brightness LCD screen module, camera array, and optical measurement module are arranged on the surface of the shell; The main control module is connected to the high-brightness LCD screen module, the camera array, the optical measurement module, and the printer module respectively; The optical measurement module is used to detect the ambient light intensity; The high-brightness LCD screen module exchanges data with the main control module. The high-brightness LCD screen module is used to display the visual mark corresponding to the measured vision and the ambient light intensity; The camera array exchanges data with the main control module. The camera array detects the visual distance of all people in the field of view when they lower their heads to read, the duration of each lowering of the head, the visual distance between the blackboard and the head when they raise their heads, and the duration of each raising of the head, so as to monitor and analyze the amount of eye use. The printer module exchanges data with the main control module, and the printer module is used to print out corresponding information to assist diagnosis and analysis; The system control terminal has two input modes: voice and key input. The system control terminal exchanges data and commands with the main control module wirelessly, and controls the vision detection system through the main control module. The optical measurement module is set on the upper right side of the housing to detect the ambient light intensity in real time and calculate the all-day light intensity coefficient P1 using the following formula: Among them, 1~m refers to the 1st to mth time of the day, p1~p m Refers to the ambient light intensity corresponding to the 1st to mth moments of the day. The camera array is parallel to the blackboard in front of it. The camera array inputs the captured images into a grid table. Each grid in the grid table is a square with a side length of 2 cm. The features of both eyes and the features of the book / desk are obtained through face recognition, and then the viewing distance of looking down at a book is calculated to obtain the viewing distance h of looking down at a book. n and the duration of each bow n , The probability of myopia for each person, U, is calculated using the following formula: U=T0+T1-T2+D0+P1 Among them, T0 refers to the extracurricular time throughout the day, and T2 refers to the excessive eye use time throughout the day. T1 refers to the time spent looking at the blackboard throughout the day. T n is the time spent looking at the blackboard each time, D0 refers to the weighted value of the information of the student’s age, the degree of myopia of both parents, and gender, The camera array measures the distance L of all people in the field of view from the vision detection system. n , the distance L between each person and the vision detection system n At least three pairs of cameras are used to perform compensation calculations, where each pair of cameras contains two cameras, L n =fT0 / d0, f is the focal length of the camera, its dimension is pixel point, T0 is the center distance of the camera, its dimension is determined by the actual size of the calibration chessboard and the user input value, the accuracy is in millimeter level, d0 is the parallax, its dimension is also pixel point, Ultrasonic distance measuring sensors and laser distance measuring sensors have monitoring mode and detection mode. The monitoring mode is that the ultrasonic distance sensor and the laser distance sensor work simultaneously, and the ultrasonic distance sensor and the laser distance sensor are parallel to the blackboard. The distance between the person in the field of view and the vision detection system is l n , l n =(l 1n +l 2n ) / 2, where l 1n is the distance between the person and the vision detection system detected by the ultrasonic ranging sensor, l 2n is the distance between the person and the vision detection system detected by the laser distance sensor. The detection mode is the vision detection mode. The ultrasonic ranging sensor and the laser ranging sensor detect the distance H between the person in front and the vision detection system. If the distance H exceeds the preset range, the vision detection system will issue an alarm.

2. The vision detection system with eye usage monitoring and analysis function according to claim 1, characterized in that: The camera array is arranged directly above the housing and includes a plurality of cameras, and the field of view of the camera array is 360 degrees.

3. The vision detection system with eye usage monitoring and analysis function according to claim 1, characterized in that: The optical measurement module comprises an optical measurement module control board, a light intensity measurement module, an ultrasonic distance measurement sensor and a laser distance measurement sensor. The light intensity measurement module, the ultrasonic distance measurement sensor and the laser distance measurement sensor are all connected to the optical measurement module control board.

4. The vision detection system with eye usage monitoring and analysis function according to claim 1, characterized in that: The printer module includes a 4G module, a WIFI module, a Bluetooth module, a printer module, a power module and a data conversion board, wherein the data conversion board is respectively connected to the main control module and the 4G module, the WIFI module, the Bluetooth module, the printer module and the power module; the 4G module, the WIFI module and the Bluetooth module are used for wireless communication; the printer module is used for printing responses to required output data; and the power module is used for power supply.

5. The vision detection system with eye usage monitoring and analysis function according to claim 1, characterized in that: The main control module includes a data wired transceiver unit, a data wireless transceiver unit, a control unit and a data storage unit. One end of the data wired transceiver unit is connected to the high-brightness LCD screen module, the camera array, the optical measurement module and the printer module, and the other end is connected to the control unit. The control unit is used to control the components connected to it. The data wireless transceiver unit is connected to the control unit and is used to wirelessly connect to the system control end for remote data transmission. The data storage unit is connected with the control unit.

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