CN110738831A

CN110738831A - warning device for preventing myopia

Info

Publication number: CN110738831A
Application number: CN201911047985.2A
Authority: CN
Inventors: 刘宏图
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-01-31

Abstract

The invention discloses an myopia prevention reminding device which comprises a shell and an electronic control board, wherein the electronic control board comprises an Arduino Uno development board, an ultrasonic ranging circuit, an ambient light intensity detection circuit, a target distance display circuit, a high-precision double-shaft inclination angle sensor, a voice prompting circuit, a loudspeaker and a lithium battery charging circuit, the ultrasonic ranging circuit is used for measuring the distance between eyes of a user and a target, the ambient light intensity detection circuit is used for measuring the light intensity in the environment, the target distance display circuit adopts a mini battery display to visually display the distance between the target and the horizontal plane, the high-precision double-shaft inclination angle sensor is used for detecting the left-right inclination angle between the head of the user and the horizontal plane, the Arduino Uno development board controls the voice prompting circuit to drive the loudspeaker to send out prompting voice according to a received detection signal, and the user can be reminded of correcting the posture.

Description

warning device for preventing myopia

Technical Field

The invention relates to the technical field of electronics, in particular to reminding devices for preventing myopia.

Background

In recent years, more and more people suffer from myopia, the average age of the people suffering from myopia is gradually reduced, high myopia is easy to generate various eyeground lesions, serious permanent visual function damage is caused, and due to daily irregular sitting postures, timely correction cannot be achieved, more and more middle and primary school students wear myopia glasses too early, the problem of irregular sitting postures can be solved timely, the myopia prevention device is an important means for preventing myopia, but the function of the existing myopia prevention device is single , the practicability is low, circuits are complicated, and the power consumption is high.

In summary, how to design kinds of reminding devices for preventing myopia, which has simple circuit structure, low energy consumption and high intelligent degree, is a problem that the technicians in the field need to solve urgently.

Disclosure of Invention

() problems to be solved

Aiming at the defects of the prior art, the invention provides reminding devices for preventing myopia, which have the advantages of low energy consumption and high intelligence degree, can remind a user of improving wrong eye using habits in time, and provide a good eye using environment for the user.

(II) technical scheme

In order to achieve the above purposes, the invention is realized through the following technical scheme that reminding devices for preventing myopia comprise a shell and an electronic control panel, wherein the electronic control panel comprises an Arduino Uno development board, an ultrasonic ranging circuit, an environmental light intensity detection circuit, a target distance display circuit, a high-precision double-shaft inclination angle sensor, a voice prompt circuit, a loudspeaker and a lithium battery charging circuit, the ultrasonic ranging circuit comprises an ultrasonic sensor, the Arduino Uno development board sends a trigger signal to the ultrasonic sensor, the ultrasonic sensor sends a detection wave back to automatically detect an echo signal and send the echo signal to the Arduino Uno development board, whether the distance between eyes of a user and a target is lower than a set limit value is measured by adopting an ultrasonic ranging principle of measuring the time difference between the sending ultrasonic wave and the receiving ultrasonic echo is measured, the environmental light intensity detection circuit adopts a photoresistor to measure the result and send the result to the Arduino Uno development board, the target distance display circuit, the voice prompt circuit and the charging circuit are connected with the Arduino development board, the miniature battery development board is connected with the head of the Arduino development board, the head of the battery, the miniature development board is connected with the head of the miniature development board, the high-angle display device, the head-angle display device is used for displaying the detection of the high-angle display device, the head-angle detection device, the high-angle detection device, the head-angle detection device is connected with the head-angle display device, the miniature lithium battery development device, the miniature battery development board, the miniature battery development:

the buckle is fixedly connected with the inner side of the electronic control board through a fixing block;

the card section of thick bamboo, a card section of thick bamboo is arranged in electronic control board's mounting groove, ring channel, second ring channel, third ring channel, fourth ring channel and fifth ring channel have been seted up in proper order from a left side to the right side in the inside of a card section of thick bamboo.

step by step, ultrasonic ranging circuit still includes resistance R5, resistance R6, filter capacitance C1 and electric capacity C2, ultrasonic sensor adopts the model to be HCSR-04, ultrasonic sensor's trigger control signal input port passes through resistance R5 with Arduino Uno development board's pin 6 links to each other, ultrasonic sensor's echo signal output port passes through resistance R6 with Arduino Uno development board's pin 7 links to each other, filter capacitance C1 connects in parallel between ultrasonic sensor's trigger control signal input port and the power ground, electric capacity C2 connects in parallel between ultrasonic sensor's echo signal output port and the power ground.

, the ambient light intensity detecting circuit includes a photo resistor R2, the end of the photo resistor R2 is connected in parallel with the end of the resistor R1 and then connected to the PC4 pin of the Arduino Uno development board, the other end of the photo resistor R2 is grounded, the anode of the zener diode D1 is connected with the other end of the photo resistor R2, and the other end of the resistor R1 is connected in parallel with the cathode of the zener diode D1 and then connected to the power supply sequentially through the resistor R4 and the adjustable resistor R3.

, the mini-battery display is connected to the driving port and the output port of the driving chip, and the driving chip is connected to and communicates with the Arduino Uno development board through the data input port DIO and the clock input port CLK.

step by step, high accuracy biax inclination sensor adopts the model to be SCA100T, high accuracy biax inclination sensor with Arduino Uno development board passes through four-wire SPI interface connection, high accuracy biax inclination sensor's pin 10 passes through resistance R9 ground connection, high accuracy biax inclination sensor's pin 9 and pin 6 all ground connection.

step forward, the voice prompt circuit includes pronunciation chip and electric capacity C5, the pronunciation chip adopts the model to be SC8035, electric capacity C5 connects in parallel between the pin 1 and the pin 5 of pronunciation chip, the pin 8 of pronunciation chip with the pin 8 of Arduino Uno development board links to each other, the pin 7 of pronunciation chip with the pin 5 of Arduino Uno development board links to each other, the pin 6 of pronunciation chip with the pin 4 of Arduino Uno development board links to each other, the speaker is connected between the pin 2 and the pin 3 of pronunciation chip.

, the lithium battery charging circuit includes a charging management chip U2, the charging management chip U2 is CN3052 in model, a capacitor C3 is connected in parallel between pin 1 and pin 5 of the charging management chip U2, a rechargeable lithium battery is connected in parallel between pin 1 and pin 5 of the charging management chip U2, pin 1 of the charging management chip U2 is grounded through a resistor R7, pin 6 of the charging management chip U2 is connected with of a resistor R8 through a light emitting diode D2, pin 7 of the charging management chip U2 is connected with of the resistor R8 through the light emitting diode D3, the other of the resistor R8 is connected with pin 4 and pin 8 of the charging management chip U2 and then connected with a charging power source, and a capacitor C4 is connected between the charging power source and a power ground.

It is more step by step, when power voltage is at 3V ~ 3.18V, trigger the sleep mode of Arduino Uno development board, then Arduino Uno development board control voice prompt circuit sends "the electric quantity is low excessively, please charge"'s voice prompt sound by the speaker, then gets into sleep mode, after the electric quantity resumes, awakens automatically through the outside interrupt Arduino development board.

, the buckle further comprises pairs of 0 th inclined arms, 1 pairs of second inclined arms and 2 pairs of clamping feet, the ends of 3 pairs of 4 th inclined arms are symmetrically connected to the outer side of the fixed block, the end of the second inclined arm is connected with the other end of the th inclined arm, the other end of the second inclined arm is connected with the clamping feet, and arc-shaped grooves are formed between the pairs of th inclined arms.

Further , the inclined arm and the side wall of the second annular groove are pressed against each other, the hook of the clip and the second side wall of the fourth annular groove are pressed against each other, and the clip protrusion of the clip and the third side wall of the fifth annular groove are pressed against each other.

(III) advantageous effects

The reminding device for preventing the myopia has the advantages that the reminding device for preventing the myopia is simple in circuit structure, low in energy consumption and high in intelligent degree, can remind a user of improving wrong eye using habits in time, provides a good eye using environment for the user, and is convenient to replace the electronic control board due to the fact that the pairs of clamping devices are arranged between the shell and the electronic control board.

Drawings

FIG. 1 is a schematic circuit diagram of an ultrasonic ranging circuit and an ambient light intensity detection circuit according to the present invention;

FIG. 2 is a schematic circuit interface diagram of a target distance display circuit according to the present invention;

FIG. 3 is a schematic diagram of a circuit interface of a high-precision dual-axis tilt sensor and a voice prompt circuit with an Arduino Uno development board according to the present invention;

FIG. 4 is a schematic circuit diagram of a lithium battery charging circuit according to the present invention;

FIG. 5 is a front view of the present invention;

FIG. 6 is a side cross-sectional view of the present invention;

fig. 7 is a partial enlarged view of fig. 6 at a;

FIG. 8 is a diagram of the relationship between the latch and the cartridge of the present invention.

Detailed Description

For purposes of making the objects, aspects and advantages of the present invention more apparent, the present invention will be described in detail below with reference to the accompanying drawings and examples.

The invention relates to a flyback myopia prevention reminding device, which is shown in the attached drawings 1-8, myopia prevention reminding device and comprises a shell and an electronic control board, wherein the electronic control board comprises an Arduino Uno development board, an ultrasonic ranging circuit 2, an environment light intensity detection circuit 1, a target distance display circuit 3, a high-precision double-shaft inclination angle sensor 4, a voice prompt circuit 5, a loudspeaker and a lithium battery charging circuit 6, the ultrasonic ranging circuit 2 comprises an ultrasonic sensor, the Arduino Uno development board sends a trigger signal to the ultrasonic sensor, the ultrasonic sensor sends a detection wave to automatically detect an echo signal and sends the echo signal to the Arduino development board, the ultrasonic ranging circuit measures whether the distance between the eyes of a user and a target is lower than a set limit value by adopting an ultrasonic ranging principle of measuring time difference between transmitting ultrasonic waves and receiving ultrasonic echoes, the environment light intensity detection circuit 1 measures the light intensity in the environment by adopting a photoresistor and sends the measurement result to the Arduino development board, the environment light intensity detection circuit 1 sends the measurement result to the Arduino development board, the environment light intensity detection circuit 1 is connected with the Arduino development board, the target distance display circuit 3, the audio detection circuit is connected with the annular groove 1724, the annular groove 1722, the miniature battery is connected with the annular groove 1722, the miniature development board is connected with the miniature development cylinder 1722, the miniature development cylinder 1722 is connected with the miniature development cylinder 1722, the miniature development cylinder 1724, the miniature development cylinder 1722 is connected with the miniature development cylinder 1722, the miniature development.

Arduino UNO is an ATmega328P based Arduino development board with 14 digital input/output pins, 6 of which are available for PWM, 6 analog input pins, 16MHz crystal oscillators, USB interfaces, DC interfaces, ICSP interfaces and reset buttons, which contain the cut required by the microcontroller.

As shown in fig. 1, the present invention adopts an ultrasonic ranging principle of measuring a time difference between transmitting ultrasonic waves and receiving ultrasonic echoes, to measure whether a distance between a user's eye and an observed object is lower than a set limit value, which is set to 0cm to 35cm in this embodiment, wherein the ultrasonic ranging circuit 2 further includes a resistor R5, a resistor R6, a filter capacitor C1 and a capacitor C2, the ultrasonic sensor adopts HCSR-04 model, which uses IO port TRIG to trigger ranging, a high level of 10us is input, the module automatically sends 8 square waves of 40khz, automatically detects whether there is a signal return, if there is a signal return through IO port ECHO output high levels through IO port ECHO, the time for which the high level lasts is the time from transmitting to returning of ultrasonic waves, a trigger control signal input port of the ultrasonic sensor is connected to a pin 6 of the Arduino Uno development board through the resistor R5, an ECHO signal output port of the ultrasonic sensor is connected to a pin 7 of the Arduino development board through the resistor R3984, an ECHO signal input port of the Arduino development board is connected to a negative terminal of an adjustable resistor R4658, and a photosensitive resistor R4654 is connected to a power supply terminal of an ECHO circuit, and a photosensitive resistor R597 of the environment PC development board, and a photosensitive resistor R4654, and a photosensitive resistor R2 are connected to a photosensitive resistor R2, and a photosensitive resistor R597 of the environment adjustable photosensitive resistor R2, and a photosensitive resistor.

As shown in fig. 2, the mini-battery display is connected to the driving port and the output port of the driving chip, and the driving chip is connected to and communicates with the Arduino Uno development board through a data input port DIO and a clock input port CLK.

As shown in fig. 3, the model of the high-precision biaxial inclination angle sensor 4 is SCA100T, the high-precision biaxial inclination angle sensor 4 is connected with the Arduino Uno development board through a four-wire SPI interface, the pin 10 of the high-precision biaxial inclination angle sensor 4 is grounded through a resistor R9, the pin 9 and the pin 6 of the high-precision biaxial inclination angle sensor 4 are both grounded, the voice prompt circuit 5 comprises a voice chip and a capacitor C5, the voice chip adopts the model of SC8035, the SC8035 has Input pins and two I/O pins, and has precise internal oscillation resistance, so that an additional oscillation resistor is not needed, wherein the capacitor C5 is connected in parallel between the pin 1 and the pin 5 of the voice chip, the pin 8 of the voice chip is connected with the pin 8 of the Arduino Uno development board, the pin 7 of the voice chip is connected with the pin 5 of the Arduino Uno development board, the pin 6 of the voice chip is connected with the pin 4 of the Arduino development board, and the pin 2 of the speaker is connected between the pin 2.

As shown in fig. 4, the lithium battery charging circuit 6 includes a charging management chip U2, the model of the charging management chip U2 is CN3052, a capacitor C3 is connected in parallel between

pins

1 and 5 of the charging management chip U2, a rechargeable lithium battery is connected in parallel between

pins

1 and 5 of the charging management chip U2, pin 1 of the charging management chip U2 is grounded through a resistor R7, pin 6 of the charging management chip U2 is connected to a end of a resistor R8 through a light emitting diode D2, pin 7 of the charging management chip U2 is connected to a end of a resistor R8 through the light emitting diode D3, another end of the resistor R8 is connected to the pin 4 and pin 8 of the charging management chip U2, a capacitor C4 is connected between the charging power and the power ground, when the power supply voltage is 3V-3.18V, the sleep mode of the arno development board is triggered, the power development board is turned on, the sleep mode of the arno development board is turned off, and the external voice call the loudspeaker is turned on, and the power development control board, and the loudspeaker is turned off.

As shown in fig. 7, the buckle 171 further includes pairs of -th oblique arms 1712, 0 pairs of second

oblique arms

1713 and 1 pairs of

clamping feet

1714, 2 pairs of 3-th oblique arms 1712 and ends symmetrically connected to the outer side of the fixing block 1711, end of the second oblique arm 1713 is connected to the other end of the -th oblique arm 1712, the other end of the second oblique arm 1713 is connected to the clamping foot 1714, and arc-shaped grooves 1715 are formed between pairs of -th oblique arms 1712.

As shown in fig. 8, the th inclined arm 1712 abuts against the th side wall 17221 of the second annular groove 1722, the hook 17141 of the latch 1714 abuts against the second side wall 17241 of the fourth annular groove 1724, and the latch 17142 of the latch 1714 abuts against the third side wall 17251 of the fifth annular groove 1725.

In this embodiment, in the normal reading and writing process of the user, the horizontal action angle of is 0 degree to 35 degrees, if the head of the user is bent upward or downward, the horizontal action angle is zero degree, so the set angle threshold is 35 degrees, when the user action angle is greater than 35 and greater than 60s, the Arduino Uno development board controls the voice prompt circuit 5 to send out a prompt sound of "please sit upright and keep a good sitting posture" through the speaker, and when the distance between the user and the target is 0cm to 35cm and exceeds 10 minutes, the Arduino Uno development board controls the voice prompt circuit 5 to send out a prompt sound of "too close distance to keep a good eye habit" through the speaker.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

Base (11), shell (13) and electronic control board (14), shell (13) are through to support column (12) fixed connection on base (11), shell (13) upper end is equipped with bee calling organ, the outside side of electronic control board (14) is equipped with handle (16), including Arduino Uno development board, ultrasonic ranging circuit, environment light intensity detection circuit, target distance display circuit, high accuracy biax angular transducer, voice prompt circuit and speaker and lithium cell charging circuit in electronic control board (14), ultrasonic ranging circuit includes ultrasonic sensor, Arduino Uno development board to ultrasonic sensor sends trigger signal, ultrasonic sensor sends detection back automated inspection echo signal to send echo signal to Arduino development board, adopt the distance between the ultrasonic ranging measurement user's eyes of the time difference between measurement transmission ultrasonic wave and the receipt ultrasonic echo to measure the limit value between to the target, whether the distance of the battery is less than the visual development circuit, the battery is used for the visual detection of the height detection circuit to send the visual detection of target angle detection circuit and the battery to the visual detection of target detection circuit, the battery is used for the visual detection of the height detection circuit to send the visual detection circuit to the battery to the visual detection of target angle detection circuit and the visual detection circuit to the visual detection circuit of the target detection circuit.

pairs of clamping devices (17), wherein the clamping devices (17) are arranged between the shell (13) and the electronic control board (14), and the clamping devices (17) comprise:

the buckle (171), the said buckle (171) is fixed with the inboard of the said electronic control board (14) through the fixed block (1711);

the clamping cylinder (172), the clamping cylinder (172) is arranged in the mounting groove (141) of the electronic control board (14), and the -th annular groove (1721), the second annular groove (1722), the third annular groove (1723), the fourth annular groove (1724) and the fifth annular groove (1725) are sequentially formed in the clamping cylinder (172) from left to right.
2. The warning device of prevention myopia according to claim 1, wherein the ultrasonic ranging circuit further includes resistance R5, resistance R6, filter capacitance C1 and electric capacity C2, ultrasonic sensor adopts the model to be HCSR-04, ultrasonic sensor's trigger control signal input port passes through resistance R5 with pin 6 of Arduino Uno development board links to each other, ultrasonic sensor's echo signal output port passes through resistance R6 with pin 7 of Arduino Uno development board links to each other, filter capacitance C1 connects in parallel between ultrasonic sensor's trigger control signal input port and power ground, electric capacity C2 connects in parallel between ultrasonic sensor's echo signal output port and power ground.
3. A reminder device for preventing myopia according to claim 1, wherein the ambient light intensity detection circuit includes a photo resistor R2, the end of the photo resistor R2 is connected in parallel with the end of the resistor R1 and then connected to the PC4 pin of the Arduino Uno development board, the other end of the photo resistor R2 is grounded, the anode of the zener diode D1 is connected to the other end of the photo resistor R2, and the other end of the resistor R1 is connected in parallel with the cathode of the zener diode D1 and then connected to the power supply sequentially through the resistor R4 and the adjustable resistor R3.
4. A reminder device for preventing myopia according to claim 1, wherein the mini-battery display is connected to the driving port and the output port of the driving chip, and the driving chip is connected to and communicates with the Arduino developing board through a data input port DIO and a clock input port CLK.
5. The myopia-preventing reminder device according to claim 1, wherein the high-precision biaxial tilt sensor is SCA100T in terms of model number, the high-precision biaxial tilt sensor is connected to the Arduino Uno development board through a four-wire SPI interface, pin 10 of the high-precision biaxial tilt sensor is grounded through a resistor R9, and pin 9 and pin 6 of the high-precision biaxial tilt sensor are both grounded.
6. The myopia prevention reminding device of claim 1, characterized in that, the voice prompt circuit includes pronunciation chip and electric capacity C5, the pronunciation chip adopts the model to be SC8035, electric capacity C5 connects in parallel between pin 1 and pin 5 of pronunciation chip, the pin 8 of pronunciation chip with pin 8 of Arduino Uno development board links to each other, the pin 7 of pronunciation chip with pin 5 of Arduino Uno development board links to each other, the pin 6 of pronunciation chip with pin 4 of Arduino Uno development board links to each other, the speaker is connected between pin 2 and pin 3 of pronunciation chip.
7. The reminding device for preventing myopia according to claim 1, wherein the lithium battery charging circuit comprises a charging management chip U2, the charging management chip U2 adopts a model CN3052, a capacitor C3 is connected in parallel between a pin 1 and a pin 5 of the charging management chip U2, a rechargeable lithium battery is connected in parallel between the pin 1 and the pin 5 of the charging management chip U2, the pin 1 of the charging management chip U2 is grounded through a resistor R7, the pin 6 of the charging management chip U2 is connected with a end of a resistor R8 through a light emitting diode D2, a pin 7 of the charging management chip U2 is connected with a end of a resistor R8 through the light emitting diode D3, the other end of the resistor R8 is connected with a pin 4 and a pin 8 of the charging management chip U2 and then connected with a charging power source, and the capacitor C4 is connected between the charging power source and a power source ground.
8. The warning device of claim 5, wherein when the power supply voltage is 3V-3.18V, the sleep mode of the Arduino Uno development board is triggered, and then the Arduino Uno development board controls the voice prompt circuit to send a voice prompt sound of "the electric quantity is too low, please charge" through the speaker, and then enter the sleep mode, and when the electric quantity is recovered, the Arduino Uno development board is automatically awakened through external interruption.
9. A reminder device for preventing myopia according to claim 1, wherein the buckle (171) further includes pairs of -th inclined arms (1712), 0 pairs of second inclined arms (1713) and 1 pairs of clamping feet (1714), ends of 2 pairs of 3-th inclined arms (1712) are symmetrically connected to the outer side of the fixing block (1711), ends of the second inclined arms (1713) are connected to ends of the -th inclined arms (1712), ends of the second inclined arms (1713) are connected to the clamping feet (1714), and arc-shaped grooves (1715) are opened between pairs of -th inclined arms (1712).
10. A reminder device for preventing myopia according to claim 9, wherein the -th inclined arm (1712) presses against the -th side wall (17221) of the second annular groove (1722), the hook (17141) of the catch (1714) presses against the second side wall (17241) of the fourth annular groove (1724), and the protrusion (17142) of the catch (1714) presses against the third side wall (17251) of the fifth annular groove (1725).