CN107424392B - Myopia prevention reminding device - Google Patents
Myopia prevention reminding device Download PDFInfo
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- CN107424392B CN107424392B CN201710416049.9A CN201710416049A CN107424392B CN 107424392 B CN107424392 B CN 107424392B CN 201710416049 A CN201710416049 A CN 201710416049A CN 107424392 B CN107424392 B CN 107424392B
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C3/00—Measuring distances in line of sight; Optical rangefinders
Abstract
The utility model provides a myopia prevention reminding device, this reminding device is towards user's head when using, the device includes a singlechip, main steering wheel and follow steering wheel are connected to the singlechip, the first laser ranging module of main steering wheel connection control and the simultaneous luffing motion of second laser module for fix a position user's top of the head and eyes position, measure the distance of user's eyes and books, from steering wheel connection control second laser ranging module horizontal hunting, a position for fix a position user's whole head, whether measure the user is the side head, photosensitive induction module and active bee calling organ are still connected to the singlechip. The singlechip is connected with a Bluetooth module. The device adopts Arduino nano board as the mainboard of singlechip.
Description
Technical Field
The invention belongs to the technical field of health protection, and particularly relates to a myopia prevention reminding device.
Background
The invention discloses a patent document with publication number CN104504869A, and discloses a voice reminding device for preventing children myopia, which belongs to the technical field of protecting eyes to prevent myopia, and comprises a power supply circuit, a single chip microcomputer circuit, an ultrasonic transmitting head, an ultrasonic receiving head, a bidirectional ball switch, an amplification detection circuit, a voice circuit, a piezoelectric buzzer, a necessary shell and a head-mounted support.
However, the circuit composition of the myopia prevention reminding device is complex, the realization technology difficulty is high, and the cost of the product is not favorably reduced.
Disclosure of Invention
The invention relates to an intelligent myopia prevention reminder for a low-age student in a primary school, which aims to solve the problem that the existing device is high in cost.
A myopia prevention reminding device faces the head of a user when in use and comprises a single chip microcomputer, a main steering engine and a slave steering engine, wherein the single chip microcomputer is connected with the main steering engine, the main steering engine is connected with the slave steering engine to a second laser ranging module, the main steering engine is also connected with a first laser ranging module,
the main steering engine is connected with and controls the first laser ranging module and the second laser ranging module to swing up and down together,
the first laser ranging module is used for positioning the head top and the eyes of a user and measuring the distance between the eyes of the user and a book,
the main steering engine controls the second laser ranging module to swing left and right through the connection of the auxiliary steering engine, and is used for positioning the whole head position and the central line of the body of a user and measuring whether the user leans his head,
the singlechip is also connected with the photosensitive induction module and the active buzzer. The singlechip is also connected with a Bluetooth module.
The device adopts Arduino nano board as the mainboard of singlechip.
The singlechip executes the following control steps:
(1) The main steering engine controls the first laser ranging module to continuously adjust the angle upwards, the angle is adjusted upwards less than 1 degree every time, according to whether the return value of the first laser ranging module changes by more than 1 meter,
the angle of main steering wheel regulation from top to bottom calculates according to the decay coefficient, constantly reduces with the accurate positioning head, and the form of decay coefficient is: (fixed factor) Number of times of adjustment 。
The adjusted reference angle is set by a program, and is used as a reference for calculating an adjustment degree by combining a decay coefficient when the main steering engine is adjusted up and down, and the adjusted angle = an angle before adjustment plus or minus the reference angle multiplied by the decay coefficient;
(2) The second laser ranging module is controlled by the steering engine to sweep from right to left, the angles from the steering engine when the two return values change greatly are recorded as gamma and sigma respectively, the numerical values of the 2 angles are determined as the initial values of the head position of the user,
the second laser ranging module continuously scans back and forth between (gamma-5) ° and (sigma + 5) °, and once the position of the head obtained by scanning exceeds the allowable moving range of the head, the user is judged to be on the side of the head, and an alarm is given.
The specific judgment method is as follows: if the return value is less than 1 meter when the laser sweeps to (gamma-5) ° and (sigma + 5) °, the head position is judged to be beyond the allowable head moving range.
Furthermore, a second laser ranging module is controlled by the steering engine to sweep from right to left, numerical values with large data change in two times in return values are recorded as x and y (the position of a user is measured) respectively, steering engine angles alpha and beta corresponding to the two numerical values are recorded, the width w of the user is calculated by using a cosine law, a central point o is found, an angle delta required to be adjusted back is calculated, the steering engine controls the laser module to be adjusted back delta degrees so that laser is aligned to the central point, the central point and a vertical line of a desktop are used as reference lines for the steering engine to move up and down later, wherein,
x: the distance between the second laser ranging module and the right end of the body of the user
y: the distance between the second laser ranging module and the left end of the body of the user
a: length of rudder horn
α: degree of steering engine rotation when laser is swept to right side of body
Beta: degree of steering engine rotation when laser is swept to left side of body
θ: the included angle between the laser and the body when the laser is swept to the left side of the body
w: width of body
δ: steering engine rotation angle
The myopia prevention reminding device of claim 5, wherein the main steering engine controls the first laser ranging module, and the calculation of the distance between the eyes of the user and the book comprises:
z: distance between the first laser module and the vertex
m: distance between the head and the eyes (estimated value)
Eta: main steering engine rotation angle
k: distance (estimated value) between the first laser module and the center of the book
n: distance between main steering engine rotating shaft and eyes
l: distance between the first laser module and the body center point
a: length of rudder horn
d: distance between eyes and book center
λ: the connecting line of the reminder and the eyes and the included angle of the plane of the book
ζ: included angle between laser emitted by first laser module and head
As the myopia of children is more and more serious at the present stage, although various myopia prevention pens and sitting posture correctors are still numerous, the myopia prevention pens are troublesome to use and cannot detect whether the children lean to the head or the side of the head, and meanwhile, the damage to the vision caused by insufficient light or over-strong light is not considered. If the parents are not accompanied by the child, the parents cannot know whether the eye posture and the eye environment of the child are correct or not. The Bluetooth mobile phone is connected with the mobile phone app, so that the remote real-time supervision of parents is facilitated. Once the user turns on the power supply of the reminder, the reminder starts to measure and calculate the distance between eyes and books. Too close distance and lateral head and surrounding brightness are not suitable for writing, and a dripping sound is given. The caring adult receives a summary through the app (first time, second time, total time). And can send back "end of consent" through the app, informing the child that the eyes should be stopped, relaxed, and rested.
The advantages of the present invention over prior devices include:
and (I) testing the actual distance between the reader and the reading material, and if the actual distance is less than the proper distance (30-35 cm) or the reader has a lateral head condition, sending out a reminding sound by the reminding device and recording the reminding sound.
And (II) testing whether the light of the reader is proper, and if the light exceeds the normal brightness intensity (400-600 lumens), sending out a reminding sound by the reminding device and recording.
And (III) the child leaves for more than 1 minute before the use is finished, and the reminding device sends a message to the APP to remind the parents.
And (IV) after the use is finished, the capacitive button is touched, and the reminding device sends the distance, the side head and the total time to the mobile phone APP. Each time data is recorded by the APP. And the APP simultaneously sends a message of requesting to end to the parents.
And (V) the parents receive the finishing request sent by the child, click to agree, and the reminding device sounds a piece of music.
(VI) teacher conveys the operation to APP in the keeper's hand, reminding device automatic recording operation on the same day, child finishes one item and can click one item of completion on reminding device's screen. When the capacitive button is touched, the reminding device can remind a child that a certain operation is not completed.
(VII) if dictation operation exists, parents can let children oneself with the content recording of dictation, pass to reminding device through APP, by reminding device automatic playback
(eighth) the reminder device, if widely used, can collect information from a large number of users, providing raw research data and related data to medical and research institutions.
Drawings
FIG. 1 is a schematic diagram of the components of the apparatus of the present invention.
Fig. 2 is a schematic diagram of a second laser ranging module in the embodiment of the present invention.
Fig. 3 is a schematic diagram of a first laser ranging module according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a measurement for determining whether a user is on his side in the second laser ranging module according to an embodiment of the present invention.
Detailed Description
As shown in figure 1, the myopia prevention reminding device provided by the invention faces the head of a user when in use, and comprises a single chip microcomputer, a main steering engine and a slave steering engine, wherein the single chip microcomputer is connected with the main steering engine and the slave steering engine, the main steering engine is connected with and controls a first laser ranging module to swing up and down and is used for positioning the top of the head and the positions of eyes of the user, measuring the distance between the eyes of the user and books, the slave steering engine is connected with and controls a second laser ranging module to swing left and right and is used for positioning the position of the whole head of the user and measuring whether the user leans to the head.
The singlechip is also connected with the photosensitive induction module and the active buzzer. The singlechip is also connected with a Bluetooth module. The device adopts Arduino nano board as the mainboard of singlechip.
Wherein:
● Arduino nano plate: all measured and calculated data are returned to the single chip microcomputer
● The laser ranging module: measuring the distance between the machine and the top of the user's head, and measuring the distance between the machine and the user's shoulders once the user is on his side
● Steering engine: controlling the laser ranging module to rotate upwards and recording the rotating angle
● Photosensitive induction module: measuring the value of ambient brightness
● A Bluetooth module: all information transfer between machine and app
● Active buzzer: according to the judgment of the program, if the brightness is not good or the distance is too close, the buzzer sounds.
When the device works, the distance between the machine and the top of the child head is measured firstly, the distance between the machine and the eyes is calculated through the cosine law according to the rotation angle measured in the steering engine and the distance between the built-in machine and the center of the book, and the distance between the book and the eyes is calculated according to the cosine law again.
The steering engine controls the laser range finder to be continuously adjusted upwards, and the upward adjustment is less than 1 degree every time. Once the change of the return value is more than 1 meter, the steering engine is adjusted downwards for a certain degree. Once the return value changes and is greater than 1 meter again, the steering engine is adjusted up again, and the degree is calculated according to the decay coefficient and can be continuously reduced, so that the laser ranging is more accurate. If the return value has no large change, the up-regulation or the down-regulation is repeated until a zero boundary point is found.
The device comprises a singlechip for executing the following control steps:
(1) The main steering engine controls the first laser ranging module to continuously adjust the angle upwards, the angle is adjusted upwards by less than 1 degree every time, according to whether the change of the return value of the first laser ranging module is more than 1 meter,
up and down regulation of main steering engineThe angle of the joint is calculated according to the decay coefficient, which is in the form of: (fixed coefficient) Number of times of adjustment 。
The adjusted reference angle is set by a program, and is used as a reference for calculating an adjustment degree by combining a decay coefficient when the main steering engine is adjusted up and down, and the adjusted angle = an angle before adjustment plus or minus the reference angle multiplied by the decay coefficient;
(2) The second laser ranging module is controlled by the steering engine to sweep from right to left, the angles from the steering engine when the two return values change greatly are recorded as gamma and sigma respectively, the numerical values of the 2 angles are determined as the initial values of the head position of the user,
the second laser ranging module continuously scans back and forth between (gamma-5) ° and (sigma + 5) ° and judges that the user leans to the head once the head position obtained by scanning exceeds the allowable moving range of the head, and the alarm is used for reminding.
The specific judgment method is as follows: if the return value is less than 1 meter when the laser sweeps to (gamma-5) ° and (sigma + 5) °, the head position is judged to be beyond the allowable head moving range.
Furthermore, a second laser ranging module is controlled by the steering engine to sweep from right to left, numerical values with large data change in two times in return values are recorded as x and y (the position of a user is measured) respectively, steering engine angles alpha and beta corresponding to the two numerical values are recorded, the width w of the user is calculated by using a cosine law, a central point o is found, an angle delta required to be adjusted back is calculated, the steering engine controls the laser module to be adjusted back delta degrees so that laser is aligned to the central point, the central point and a vertical line of a desktop are used as reference lines for the steering engine to move up and down later, wherein,
x: the distance between the second laser ranging module and the right end of the body of the user
y: the distance between the second laser ranging module and the left end of the body of the user
a: length of rudder horn
α: degree of steering engine rotation when laser sweeps to right side of body
Beta: degree of steering engine rotation when laser is swept to left side of body
θ: the included angle between the laser and the body when the laser is swept to the left side of the body
w: width of body
δ: steering engine rotation angle
The myopia prevention reminding device of claim 5, wherein the main steering engine controls the first laser ranging module, and the calculation of the distance between the eyes of the user and the book comprises:
z: distance between the first laser module and the vertex
m: distance between the head and the eyes (estimated value)
Eta: main steering engine rotation angle
k: distance (estimated value) between the first laser module and the center of the book
n: distance between main steering engine rotating shaft and eyes
l: distance between the first laser module and the body center point
a: length of rudder horn
d: distance between eyes and book center
λ: the connecting line of the reminder and the eyes and the included angle of the plane of the book
ζ: included angle between laser emitted by first laser module and head
Claims (3)
1. A myopia prevention reminding device faces the head of a user when in use and is characterized by comprising a single chip microcomputer, a main steering engine and a slave steering engine, wherein the single chip microcomputer is connected with the main steering engine which is connected with the slave steering engine to a second laser ranging module, the main steering engine is also connected with a first laser ranging module,
the main steering engine is connected with and controls the first laser ranging module and the second laser ranging module to swing up and down together,
the first laser ranging module is used for positioning the head top and the eyes of a user and measuring the distance between the eyes of the user and a book,
the main steering engine controls the second laser ranging module to swing left and right through the connection of the auxiliary steering engine, so as to position the whole head of a user and the central line of the body of the user, measure whether the user leans his head,
the singlechip is also connected with the photosensitive induction module and the active buzzer,
the singlechip executes the following control steps:
(1) The main steering engine controls the first laser ranging module to continuously adjust the angle upwards, the angle is adjusted upwards by less than 1 degree every time, according to whether the change of the return value of the first laser ranging module is more than 1 meter,
the up-and-down adjusting angle of the main steering engine is calculated according to the decay coefficient and is continuously reduced to accurately position the head,
the adjusted reference angle is set by a program, and is used as a reference for calculating an adjustment degree by combining a decay coefficient when the main steering engine is adjusted up and down, and the adjusted angle = an angle before adjustment plus or minus the reference angle multiplied by the decay coefficient;
(2) The second laser ranging module is controlled by the steering engine to sweep from right to left, the angles from the steering engine when the two return values change greatly are recorded as gamma and sigma respectively, the numerical values of the 2 angles are determined as the initial values of the head position of the user,
the second laser ranging module continuously scans back and forth between (gamma-5) DEG and (sigma + 5) DEG, and once the position of the head obtained by scanning exceeds the allowable moving range of the head, the user is judged to be on the side of the head, and an alarm is given;
in order to determine the position of the user,slave steering engineControlling a second laser ranging module to sweep from right to left, recording values with large data change in two times in the returned values as x and y and steering engine angles alpha and beta corresponding to the two values, calculating the width w of a user by using a cosine law, finding out a central point o, calculating an angle delta which needs to be adjusted back by the steering engine, controlling the laser module by the steering engine to adjust back delta degrees to enable laser to be aligned with the central point, and taking the point and a vertical line of a desktop as a reference line for the steering engine to move up and down later,
x: the distance between the second laser ranging module and the right end of the body of the user,
y: the distance between the second laser ranging module and the left end of the body of the user,
a: the length of the rudder horn is such that,
α: the steering engine rotates by degrees when the laser sweeps to the right side of the body,
beta: the steering engine rotates by degrees when the laser sweeps to the left side of the body,
θ: when the laser is swept to the left side of the body, the laser forms an included angle with the body,
w: the width of the human body is that of the human body,
δ: the rotation angle of the steering engine is controlled,
the first laser rangefinder module of main steering wheel control to the distance calculation of user's eyes and books includes:
z: the distance from the first laser module to the top of the head,
m: the estimated distance value between the top of the head and the eyes,
eta: the rotation angle of the main steering engine is adjusted,
k: the estimated distance value between the first laser module and the center of the book,
n: the distance between the rotating shaft of the main steering engine and the eyes,
l: the distance of the first laser module from the body center point,
a: the length of the rudder horn is such that,
d: the distance between the eyes and the center of the book,
λ: the connecting line of the reminder and the eyes and the included angle of the plane of the book,
ζ: the included angle between the laser emitted by the first laser module and the head,
2. the myopia prevention reminding device of claim 1, wherein the single chip microcomputer is connected with a Bluetooth module.
3. The myopia prevention reminding device as claimed in claim 1, wherein the device uses an Arduino nano board as a main board of the single chip microcomputer.
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| CN201710416049.9A CN107424392B (en) | 2017-06-06 | 2017-06-06 | Myopia prevention reminding device |
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| CN201710416049.9A CN107424392B (en) | 2017-06-06 | 2017-06-06 | Myopia prevention reminding device |
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| CN107424392B true CN107424392B (en) | 2022-12-27 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387209A (en) * | 2018-02-26 | 2018-08-10 | 上海朗奢科技有限公司 | Intelligent distance-measuring system applied to study inspection platform |
| CN108320475A (en) * | 2018-04-12 | 2018-07-24 | 湘潭大学 | A kind of smart myopia sitting-posture correction device |
| CN108877166B (en) * | 2018-07-23 | 2020-11-03 | 广东小天才科技有限公司 | Sitting posture reminding device |
| CN109819402B (en) * | 2019-01-08 | 2021-07-06 | 李超豪 | Method and system for supervising and improving learning habits |
| CN110246310A (en) * | 2019-06-28 | 2019-09-17 | 厦门集长新材料科技有限公司 | A kind of myopia prevention system for prompting and the intelligent desk lamp using the system |
| CN111599142A (en) * | 2020-05-15 | 2020-08-28 | 安徽猫头鹰科技有限公司 | Wearable intelligent eye protection light monitoring equipment for teenagers |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2315830Y (en) * | 1997-10-29 | 1999-04-28 | 张宗光 | Health desk |
| CN102956090A (en) * | 2011-08-26 | 2013-03-06 | 陈仕国 | Double-lens image sensing myopia-preventing reminder |
| CN202874373U (en) * | 2012-04-20 | 2013-04-17 | 邱军 | Lighting and myopia-preventing reading/writing device |
| CN104346905A (en) * | 2013-08-05 | 2015-02-11 | 郑州学生宝电子科技有限公司 | Student posture monitoring instrument |
| CN103558910B (en) * | 2013-10-17 | 2016-05-11 | 北京理工大学 | A kind of intelligent display system of automatic tracking head pose |
| CN203706383U (en) * | 2014-02-18 | 2014-07-09 | 符哲瀚 | Intelligent eyesight spine protection instrument |
| CN105528871A (en) * | 2014-09-29 | 2016-04-27 | 肖文怡 | Myopia prevention prompter |
| CN204328624U (en) * | 2014-12-24 | 2015-05-13 | 深圳市易特科信息技术有限公司 | Intelligent healthy based on human body attitude eye protective device |
| CN105096313B (en) * | 2015-06-17 | 2017-10-17 | 杭州凯特电器有限公司 | Display myopia-proof intelligent control system and its control method |
| CN205302590U (en) * | 2016-01-05 | 2016-06-08 | 王思博 | Appearance is reminded to student's myopia prevention |
| CN206805756U (en) * | 2017-06-06 | 2017-12-26 | 徐君逸 | A kind of myopia prevention alarm set |
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