CN113012406A - Myopia prevention and control device and detection method - Google Patents
Myopia prevention and control device and detection method Download PDFInfo
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- CN113012406A CN113012406A CN202110065536.1A CN202110065536A CN113012406A CN 113012406 A CN113012406 A CN 113012406A CN 202110065536 A CN202110065536 A CN 202110065536A CN 113012406 A CN113012406 A CN 113012406A
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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
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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Abstract
The invention discloses a myopia prevention and control device and a detection method, and the technical scheme is that the myopia prevention and control device comprises: the distance sensor is arranged on the shell, a projection included angle is formed between the distance sensor and the horizontal plane, and the angle range of the projection included angle is 29-60 degrees; the control module is used for receiving the signal of the distance sensor, comparing the signal with a threshold value and outputting a processing signal of a standard sitting posture or a non-standard sitting posture according to a comparison result; the detection method based on the myopia prevention and control device comprises the following steps that (a) a normal threshold value of sitting posture characteristic information is set and stored in a control module; (b) placing the shell on a desktop, enabling the distance sensor to face a user, and acquiring sitting posture characteristic information of the current user; (c) and comparing the current sitting posture characteristic information with the normal threshold range, transmitting the current sitting posture characteristic information to an external terminal through a communication module, and transmitting a detection result to a teacher or a guardian by utilizing the detection of the sitting posture of the teenager, wherein the teacher or the guardian reminds the purpose of monitoring the sitting posture of the teenager.
Description
Technical Field
The invention relates to the field of myopia prevention and control, in particular to a myopia prevention and control device and a detection method.
Background
At present, more than 4 hundred million myopia patients exist in China, wherein the myopia rate of teenagers is continuously improved, and the pressure of the courseware and the study makes the teenagers have to use eyes for a long time.
For teenagers, most of the eye-using time is consumed in a classroom, and the fatigue of the teenagers with eyes is accelerated due to wrong sitting posture, for example, the teenagers are too close to a desk surface to read data in the classroom, so that the teenagers are too early to be changed into the disease of myopia. In any case, the damage of myopia is irreversible, and high myopia easily causes various eye diseases and even influences normal life.
However, as for teenagers, there is no clear judgment standard for the accuracy of their own sitting postures, and in daily study, it is difficult for them to find out the standard of their sitting postures, and a teacher or other guardians in a classroom cannot supervise and guide the sitting posture of a certain teenager for a long time.
Therefore, the monitoring device is lack of a device which can be used for monitoring the sitting posture of the teenager and informing the monitoring result to a guardian or a teacher in a class in the market, so that the guardian or the teacher in the class can effectively remind the teenager with the wrong sitting posture according to the detection result and help the teenager to correct the wrong sitting posture.
Disclosure of Invention
The first objective of the present invention is to provide a myopia prevention and control device, which utilizes the sitting posture detection of the teenagers to transmit the detection result to the teacher or the guardian, so as to achieve the purpose that the teacher or the guardian can effectively remind the monitoring of the sitting posture of the teenagers.
The first technical purpose of the invention is realized by the following technical scheme:
a myopia prevention and control device comprising: the distance sensor is arranged on the shell, a projection included angle is formed between the distance sensor and the horizontal plane, and the angle range of the projection included angle is 29-60 degrees; the control module is used for receiving the signal of the distance sensor, comparing the signal with a threshold value and outputting a processing signal of a standard sitting posture or a non-standard sitting posture according to a comparison result; and the communication module is used for transmitting the processing signal to other external terminals.
Preferably, the included angle of projection is 40 degrees.
Preferably, the reminding module outputs the reminding signal when the processing signal is a non-standard sitting posture.
Preferably, the communication module comprises a wireless gateway and a wireless communication piece; the wireless gateway is an external device and receives the processing information of the microprocessor; and the wireless communication piece transmits the information of the microprocessor to an external terminal.
Preferably, the device comprises an input module for inputting the height of the user and transmitting the height value of the user to the control module, wherein the control module comprises a calculation formula for reading the corresponding threshold value according to the height value and the calculation formula.
Preferably, the calculation includes:
h, s, and the relationship between h and s:
when h is more than 179 and less than or equal to 187, s is 37.8;
when h is more than 172 and less than or equal to 179, s is 34.75;
when h is more than 164 and less than or equal to 172, s is 32.73;
when 157< h is less than or equal to 164, s is 29.5;
when h is more than 149 and less than or equal to 157, s is 27.6;
when h is more than 142 and less than or equal to 149, s is 25.6;
when h is more than 134 and less than or equal to 142, s is 24.4;
when h is more than 127 and less than or equal to 134, s is 22.2;
when h is more than 119 and less than or equal to 127, s is 22.3;
and when h is less than or equal to 119, s is 18.5.
Preferably, the system further comprises an ambient light detector, and the ambient light detector acquires current ambient information and transmits the current ambient information to the control module for processing.
Preferably, the casing includes the bottom plate, and fixed slope is provided with an swash plate on the bottom plate, and the one end and the bottom plate of swash plate pass through the curved plate and be connected, and swash plate, bottom plate and curved plate are in proper order around connecting, and distance sensor installs on the curved plate, and swash plate and distance sensor parallel arrangement are carved with the measurement mark on the swash plate.
The second objective of the present invention is to provide a detection method based on a myopia prevention and control device, which detects the sitting posture of the teenager by effectively using the myopia prevention and control device, and transmits the detection result to a teacher or a guardian, and the teacher or the guardian reminds the monitoring of the sitting posture of the teenager.
The second technical purpose of the invention is realized by the following technical scheme:
a detection method based on a myopia prevention and control device comprises the following steps: (a) setting a normal threshold value of the sitting posture characteristic information, and storing the normal threshold value in the control module; (b) placing the shell on a desktop, enabling the distance sensor to face a user, and acquiring sitting posture characteristic information of the current user; (c) and comparing the current sitting posture characteristic information with the normal threshold range, outputting a normal signal if the current sitting posture characteristic information is in the normal threshold range, and outputting a deviation control signal if the current sitting posture characteristic information is deviated from the normal threshold range, and transmitting the deviation control signal to an external terminal through a communication module.
Preferably, (b) the housing is positioned 40cm along the table, the user and table being maintained at a distance of 4-6cm from each other.
In conclusion, the invention has the following beneficial effects: place the casing at the desktop in this design, distance sensor in the casing is towards the user to distance sensor forms one with desktop (horizontal plane) and throws the contained angle, is used for detecting the distance of user chin to distance sensor when sitting before the desk, compares measured distance and predetermined threshold value, and transmits the contrast result after will detecting to outside terminals such as cell-phone, and the teacher of being convenient for looks over student's position of sitting change.
The design also has an input function, a user can input the height of the user, and the main control module can automatically call a reference threshold value matched with the height, so that the comparison result is more accurate;
certainly, the sitting posture monitoring device also has a reminding function, and when the sitting posture of a user is abnormal by comparing the threshold value with the sitting posture, a reminding signal can be sent out, and the reminding signal can be a sound signal and an illumination signal; because this scheme is arranged in the classroom more, in order to reduce the influence to peripheral classmates, it is more suitable to adopt the warm light of scintillation to be used for reminding.
Drawings
FIG. 1 is an exploded schematic view of a casing according to embodiment 1;
FIG. 2 is a plan view of the housing in embodiment 1;
FIG. 3 is a side view of the housing in embodiment 1;
FIG. 4 is a schematic view of a module in example 1;
FIG. 5 is a schematic view showing the measurement positions of distances X, S, L and Y in the sitting posture in example 1;
fig. 6 is an exploded schematic view of the curved plate and the distance sensor in embodiment 3.
In the figure: 1. a sloping plate; 2. a base plate; 3. a curved plate; 4. a distance sensor; 51. a rotating shaft; 52. a damping ring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Description of the drawings:
s represents the distance from the chin of the teenager to the edge of the table in a correct sitting posture;
x represents the distance from the chest to the table edge of the teenager in a correct sitting position;
l represents the distance between the myopia prevention and control device and the edge of the desk;
y represents the distance at which the distance sensor 4 detects that the myopia prevention and control device detects the chin of the teenager;
embodiment 1, myopia prevention and control device, refer to fig. 1, 2 and 3, includes a housing, the housing includes a bottom plate 2, a sloping plate 1 is fixedly and obliquely arranged on the bottom plate 2, one end of the sloping plate 1 is connected with the bottom plate 2 through a curved plate 3, the sloping plate 1, the bottom plate 2 and the curved plate 3 are sequentially connected in a surrounding manner;
the bottom plate 2 is used for being placed on a desktop, the inclined plate 1 and the bottom plate 2 are obliquely arranged, so that one end of the inclined plate 1 is directly connected with the bottom plate 2, the other end of the inclined plate 1 is connected with the bottom plate 2 through the curved plate 3, and the curved plate 3 protrudes outwards; install distance sensor 4 on curved plate 3, distance sensor 4 can be TOF sensor, and the detection light wave that distance sensor 4 itself sent can form a detection contained angle, and the angle that detects the contained angle is 27 degrees, and half of distance sensor 4's the detection contained angle is contained in the projection angle.
The actual detection angle is the projection angle-1/2.
The inclined plate 1 and the distance sensor 4 are arranged in parallel, the distance sensor 4 forms a projection included angle with the horizontal plane, the angle of the projection included angle is 40 degrees, and the projection included angle in other embodiments can be 41 degrees, 42 degrees, 43 degrees, 44 degrees, 45 degrees or 50 degrees; and when the distance between the shell and the edge of the table is 40cm, the preferred range of the angle of the projection included angle can be 40-52 degrees;
the principle for projection angle range determination is as follows, with reference to fig. 5:
the distance s from the chin to the table top ranges from 18.5cm to 37.8 cm;
the distance X from the chest of the teenager to the edge of the table is 6 cm;
l represents the distance of the myopia prevention and control device along the table to be 21-60cm, (21cmz is exactly one A4 paper length);
according to the inverse trigonometric function,
the minimum projection included angle is 15.6+ 13.5-29.1 degrees;
the maximum included angle of projection is 54+ 13.5-67.5 degrees;
preferably, the included angle of projection is 30-60 degrees.
Be carved with the measurement mark on the swash plate 1, make the inclined plane of casing can regard as a measurement chi, because swash plate 1 is the slope and arranges, can make the student when reading the scale on swash plate 1, the bending amplitude of cervical vertebra reduces, be favorable to protecting student's cervical vertebra, this design and curved plate 3 have good combination, because distance sensor 4 needs the projection contained angle of a 40 degrees, so swash plate 1 must take place the slope relative bottom plate 2, so that have the space that holds distance sensor 4 between swash plate 1 and bottom plate 2, in addition the encirclement of curved plate 3, make distance sensor 4 enclosed, the probability that distance sensor 4 was by direct collision has been reduced.
The inclined plate 1, the bottom plate 2 and the curved plate 3 are sequentially connected into a ring body in a surrounding manner, two ends of the ring body are plugged through two sealing plates, a control circuit, an electric appliance element, a circuit board and the like are installed in the ring body, a charging socket and a control button are installed on the sealing plates, and the charging socket can be inserted into a data line; the control button can control the myopia prevention and control device to be started and closed, and can also input data including the height of a user and the like.
Referring to fig. 3, 4 and 5, the overall control system for the myopia prevention and control device includes the following:
the device comprises a sensing module, a control module, a communication module, a reminding module and an input module.
1, the method comprises the following steps: the sensing module is used for acquiring data and comprises a distance sensor 4 and an ambient light detector; the distance sensor 4 acquires the distance from the chin of a student sitting at the desk to the distance sensor 4 and transmits the distance to the control module; the ambient light detector acquires current ambient information and transmits the current ambient information to the control module for processing; the environment light detector comprises an illumination value detection module, a color temperature detection module, a stroboscopic detection module and a color rendering index detection module, and is used for respectively detecting the illumination value, the color temperature, the stroboscopic and the color rendering index in the environment; the illumination value range is between 300 and 350Lux, and when the ambient light detector detects that the current illumination value deviates from the normal range in the design, the illumination adjusting signal is output to the reminding module to control the output.
And 2, a step of: the control module comprises a microprocessor and a memory; the microprocessor receives the signal of the ambient light detector and outputs a processing signal; the microprocessor receives the data of the distance sensor 4, compares the data with a threshold value and then outputs a processing signal; the memory stores the current sensing information and control signals; including calculations in memoryAnd the microprocessor is used for reading the corresponding threshold according to a calculation formula, and the calculation formula comprises:
h, s, and a relation table of h and s;
| h(cm) | s(cm) |
| 179～187 | 37.8 |
| 172～179 | 34.75 |
| 164～172 | 32.73 |
| 157～164 | 29.5 |
| 149～157 | 27.6 |
| 142～149 | 25.6 |
| 134～142 | 24.4 |
| 127～134 | 22.2 |
| 119～127 | 22.3 |
| 119 and below | 18.5 |
The calculation formula has the advantages that a user can input the height value through the data line and the myopia prevention and control device and through the mobile phone and other external parts, the input value in the memory is converted into the most appropriate threshold value according to the height h, and the purpose is to improve the detection accuracy; and the change of the threshold value is carried out along with the change of the height of the user, thereby improving the use efficiency of the myopia prevention and control device.
In other embodiments, the memory may be used to store unique registration information for the current user and to determine a threshold value for use, forming a library of signals specific to the current user.
The relation table of h and s is converted according to table and chair data and cervical vertebra height data, the table and chair data is derived from functional size and technical requirements of school table and chair in GB/T3976 and 2014, and the cervical vertebra height data is derived from human body size of minor in GB/T26158 and 2010;
table and chair data and cervical spine height data are integrated in table 2.
And the device is used for receiving the signal of the distance sensor 4, comparing the signal with a threshold value and outputting a processing signal of a standard sitting posture or a non-standard sitting posture according to a comparison result.
And 3, a step of: the communication module is used for transmitting the processing signal to other external terminals; the communication module comprises a wireless gateway and a wireless communication piece; the wireless gateway is an external device and receives the processing information of the microprocessor; and the wireless communication piece transmits the information of the microprocessor to an external terminal.
The wireless gateway is an embedded special device, is arranged in a classroom, is used for servo of all myopia prevention and control devices in the classroom, and is used for relaying all broadcast data, data logs and the like to a cloud server. The wireless gateway is provided with a microprocessor, a backup power supply, a radio transceiver module, 4G/5G/NB-IoT and other internet connection modules, and can collect, buffer, compress, pack and upload data to the cloud in batches. The wireless gateway is optional equipment, and the data relay can be uploaded to the cloud end through a special APP client of a teacher.
The wireless communication piece communicates with an external terminal device, the wireless communication piece is set to be a Bluetooth wireless module, a WIFI wireless module and the like, and the communication module can be connected with a cloud end through a mobile phone of a teacher or a parent and transmits data such as warning, reminding and logs to the cloud end. Through the mobile phone App, teachers, parents, relatives and friends can supervise and manage through the cloud.
And 4, a step of: the reminding module is used for reminding when the processing signal is a non-standard sitting posture or the illumination value is not in a standard range; the main control module sends the processing signal to the reminding module, and the reminding module outputs a reminding signal which is a sound signal or a displayed light signal.
And (5) a step of: the input module is arranged in the shell and is used for inputting a button, a user can input the height h of the user through controlling the button, and the input module is connected with the main control module.
(a) setting a normal threshold value of the sitting posture characteristic information, and storing the normal threshold value in the control module, wherein the threshold value input can be a threshold value with a default specific height when leaving a factory, or can be a threshold value input by a teenager through operating a button outside the shell in the actual use process, and a microprocessor calculates a proper threshold value according to the height;
(b) after the threshold value is selected, the shell is placed on a table top, the bottom plate 2 of the shell is attached to the table top, the distance sensor 4 faces a user, the shell is placed at the position of 40cm of the table edge, the distance between the user and the table edge is kept at 6cm, and the current sitting posture characteristic information of the user is obtained, namely the actual distance from the chin of the user to the distance sensor 4 at the moment and the peripheral lighting parameters;
(c) comparing the current sitting posture characteristic information with a normal threshold value, and outputting a normal signal if the current sitting posture characteristic information is within the normal threshold value range; if the deviation is within the normal threshold range, a deviation control signal is output, the reminding module gives out a sound or illumination alarm at the moment, and the module can be closed when the module is used in a classroom; the communication module transmits signals to be output to an external terminal, and the signals comprise normal sitting posture time, sitting posture nonstandard time and device idle time; an absolute value is arranged in the control module, and the absolute value is greater than a threshold value;
when the detection distance of the distance sensor 4 is smaller than the threshold value, the sitting posture is not standard;
when the detection distance of the distance sensor 4 is larger than the threshold value and smaller than the absolute value, the normal sitting posture is indicated;
when the detection distance of the distance sensor 4 is larger than the absolute value, the fact is the idle time, and no people are on the table. In other embodiments, the threshold value is preferably 40cm and the absolute value is preferably 62cm when the distance sensor 4 is 40cm from the edge of the table.
Embodiment 3, which is different from embodiment 1 in that, referring to fig. 6, a distance sensor 4 is rotatably coupled to a curved plate 3 by a rotating shaft 51, a damping ring 52 is installed between the rotating shaft 51 and the distance sensor 4, and the distance sensor 4 is positioned at a rotated angle by a frictional resistance of the damping ring 52.
3 rotating stations are arranged on the curved plate 3 and used for providing a distance sensor 4, and the angles of the projecting included angles are respectively 35 degrees, 40 degrees and 50 degrees;
the height is below 130cm, and the projection included angle is 35 degrees;
the height is 130cm-165cm, and the angle of the projection included angle is 40 degrees;
the height is more than 165cm, and the projection included angle is 55 degrees;
the design is to further increase the accuracy of sitting posture detection.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. A myopia prevention and control device is characterized in that: the method comprises the following steps:
the distance sensor (4) is arranged on the shell, a projection included angle is formed between the distance sensor (4) and the horizontal plane, and the angle range of the projection included angle is 29-60 degrees;
the control module is used for receiving the signal of the distance sensor (4), comparing the signal with a threshold value and outputting a processing signal of a standard sitting posture or a non-standard sitting posture according to a comparison result;
and the communication module is used for transmitting the processing signal to other external terminals.
2. A myopia prevention and control device according to claim 1, wherein: the included angle of projection is 40 degrees.
3. A myopia prevention and control device according to claim 1 or claim 2, wherein: and the reminding module outputs a reminding signal when the processing signal is a non-standard sitting posture.
4. A myopia prevention and control device according to claim 3, wherein: the communication module comprises a wireless gateway and a wireless communication piece;
the wireless gateway is an external device and receives the processing information of the microprocessor;
and the wireless communication piece transmits the information of the microprocessor to an external terminal.
5. A myopia prevention and control device according to claim 1, wherein: the height value of the user is transmitted to the control module, the control module comprises a calculation formula, and the control module is used for reading the corresponding threshold value according to the height value and the calculation formula.
6. A myopia prevention and control device according to claim 5, wherein: the calculation formula includes:
threshold value =
Height = h, optimal distance from table top to chin = s, and the relation between h and s:
s =37.8 when 179< h ≦ 187;
s =34.75 when 172< h ≦ 179;
s =32.73 when 164< h ≦ 172;
s =29.5 when 157< h ≦ 164;
s =27.6 when 149< h ≦ 157;
s =25.6 when 142< h ≦ 149;
s =24.4 when 134< h ≦ 142;
s =22.2 when 127< h ≦ 134;
s =22.3 when 119< h ≦ 127;
and when h is less than or equal to 119, s = 18.5.
7. A myopia prevention and control device according to claim 1, wherein: the environment light detector acquires current environment information and transmits the current environment information to the control module for processing.
8. A myopia prevention and control device according to claim 1, wherein: the casing includes bottom plate (2), and fixed slope is provided with one swash plate (1) on bottom plate (2), and the one end and bottom plate (2) of swash plate (1) are connected through curved plate (3), and swash plate (1), bottom plate (2) and curved plate (3) are in proper order around connecting, and install on curved plate (3) distance sensor (4), and swash plate (1) and distance sensor (4) parallel arrangement are carved with the measurement mark on swash plate (1).
9. A detection method based on a myopia prevention and control device is characterized by comprising the following steps: the method comprises the following steps:
(a) setting a normal threshold value of the sitting posture characteristic information, and storing the normal threshold value in the control module;
(b) placing the shell on a desktop, enabling the distance sensor (4) to face a user, and acquiring sitting posture characteristic information of the current user;
(c) and comparing the current sitting posture characteristic information with the normal threshold range, outputting a normal signal if the current sitting posture characteristic information is in the normal threshold range, and outputting a deviation control signal if the current sitting posture characteristic information is deviated from the normal threshold range, and transmitting the deviation control signal to an external terminal through a communication module.
10. A method as claimed in claim 9, wherein the method comprises the following steps: (b) the housing was placed at a 40cm position along the table, with the user and table being held at a 4-6cm distance from each other.
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| CN115990012A (en) * | 2022-11-08 | 2023-04-21 | 广东保伦电子股份有限公司 | Comprehensive prevention and control method for preventing myopia in specific space |
| CN115990012B (en) * | 2022-11-08 | 2023-08-18 | 广东保伦电子股份有限公司 | Comprehensive prevention and control method for preventing myopia in specific space |
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Application publication date: 20210622 |