CN215491839U

CN215491839U - Sitting posture regulator for preventing myopia

Info

Publication number: CN215491839U
Application number: CN202121399283.3U
Authority: CN
Inventors: 姚丽芳
Original assignee: Ningbo Yiguang Intelligent Technology Co ltd
Current assignee: Ningbo Amber Intelligent Technology Co ltd
Priority date: 2020-07-29
Filing date: 2021-06-23
Publication date: 2022-01-11
Anticipated expiration: 2031-06-23

Abstract

The utility model discloses a sitting posture adjusting device for preventing myopia, which comprises a sensing assembly, wherein the sensing assembly is provided with a plurality of TOF sensors and an angle adjuster, the TOF sensors form a sensing range, and the angle adjuster can adjust the sensing range of the TOF sensors according to different conditions; the processing assembly comprises a microprocessor and a memory, the microprocessor receives the signal of the TOF sensor and outputs a processing signal, and the memory stores the processing signal of the microprocessor and the signal of the TOF sensor; the microprocessor controls the output component to output corresponding actions according to different signals of the TOF sensor; and the communication assembly is communicated with the output assembly and transmits the output signal of the output assembly to other external terminals. High-precision prevention can be achieved, and a scientific prevention scheme can be carried out by combining big data and a cloud.

Description

Sitting posture regulator for preventing myopia

Technical Field

The utility model relates to a sitting posture adjusting device, in particular to a sitting posture adjusting device for preventing myopia.

Background

At present, more than 4 hundred million myopia patients exist in China, wherein the myopia rate of teenagers is continuously improved, and the teenagers have to use eyes for a long time due to the fact that the problems are not emphasized to a great extent and the pressure of the courseware and the study is applied.

However, the damage of myopia is irreversible, and high myopia easily causes various eye diseases and even affects normal life. Therefore, a device and apparatus that can adjust for myopia is highly desirable.

At present, many myopia prevention and control devices usually only remind the current eye using distance or illumination intensity, or simply calculate the eye using time to judge whether the time is out; or a prevention area is set, when the head of a person enters the prevention area, the prevention device reminds and corrects the user to achieve the effect of preventing myopia. Almost all devices have only one sensor and use ultrasonic ranging or other single point ranging. However, when the user only adjusts the position and inadvertently moves into the distance, the user will be reminded of the position, and the learning efficiency or the working efficiency will be affected for the user. Many preventive devices are fixed in installation angle, that is, the detection area is a fixed range, but different users or seat changes can cause the position of the head of a person from the table top to change.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a sitting posture adjusting device for preventing myopia, which can perform prevention detection according to the positions of the head and the desktop of a user, is provided with a plurality of sensors simultaneously, achieves high-precision prevention, and can perform a scientific prevention scheme by combining big data and a cloud.

In order to solve the technical problems, the technical scheme of the utility model is as follows:

a sitting posture adjustment device for preventing myopia, comprising:

the sensing assembly is provided with a plurality of TOF sensors and an angle adjuster, the TOF sensors form a sensing range, and the angle adjuster can adjust the sensing range of the TOF sensors according to different conditions;

the processing assembly comprises a microprocessor and a memory, the microprocessor receives the signal of the TOF sensor and outputs a processing signal, and the memory stores the processing signal of the microprocessor and the signal of the TOF sensor;

the microprocessor controls the output component to output corresponding actions according to different signals of the TOF sensor; and

and the communication component is communicated with the output component and transmits the output signal of the output component to other external terminals.

Preferably, the sensing assembly further comprises an ambient light detector, and the ambient light detector acquires current ambient information and transmits the current ambient information to the microprocessor for processing.

Preferably, the output assembly includes a sound output and a display output, and the microprocessor controls the sound output and the display output respectively to output corresponding actions.

Preferably, the communication module includes a wireless gateway and a communication module, wherein the wireless gateway is an external device and receives the processing information of the microprocessor, and the communication module is a wireless communication module and transmits the information of the microprocessor to an external terminal.

Preferably, the ambient light processor includes an illuminance value detection module, a color temperature detection module, a strobe detection module, and a color rendering index detection module, which respectively detect an illuminance value, a color temperature, a strobe, and a color rendering index in the environment, and transmit detection information to the microprocessor.

Preferably, the communication assembly further comprises a timer, wherein the timer calculates the use duration of the user and transmits timing information to the microprocessor.

Preferably, one of the TOF sensors detects head characteristic information of a user, and the other two TOF sensors detect left and right chest characteristic information of the user, and both transmit the characteristic information to the microprocessor.

The utility model further provides an adjusting method based on the sitting posture adjusting device for preventing myopia, which comprises the following steps:

(a) setting a normal threshold value of the sitting posture characteristic information, and storing the normal threshold value in the memory;

(b) acquiring sitting posture characteristic information of a current user, wherein the sitting posture characteristic information comprises head characteristic information and chest characteristic information;

(c) and comparing the current sitting posture characteristic information with a normal threshold range, outputting a normal signal if the current sitting posture characteristic information is in the normal threshold range, outputting a deviation control signal if the current sitting posture characteristic information is deviated from the normal threshold range, and outputting a corresponding action through the output component.

Preferably, step (b) further comprises

(b1) Acquiring sitting posture characteristic information of a current user, and calling user information in a database in the memory;

(b2) comparing whether the registered information of the two is consistent, if so, determining that the user is the current user, further comparing the sitting posture height information, if so, adjusting the sitting posture height information, and if not, controlling the angle adjuster to adjust the detection angle of the sensor;

(b3) and comparing whether the registered information of the two users is consistent, if not, determining that the user is a new user, storing the sitting posture height information of the current user, and adjusting the detection angle of the sensor according to the sitting posture height information.

Preferably, the method further comprises the following steps:

(a0) setting a normal threshold value of the environment information, and storing the normal threshold value in the memory;

(b0) acquiring current environment information including an illuminance value, a color temperature, a strobe and a color rendering index;

(c0) and comparing the current environment information with the normal threshold range, outputting a normal signal if the current environment information is in the normal threshold range, outputting a deviation control signal if the current environment information is deviated from the normal threshold range, and outputting a corresponding action through the output component.

By adopting the technical scheme, the utility model has the beneficial effects that:

firstly, sitting posture characteristics of a user including head and chest characteristics can be detected, so that the detection range is improved, and the detection precision is improved;

secondly, the detection and use angles of the sensors can be adjusted according to the sitting posture heights of different users, so that the influence of misdetection on normal use is avoided;

thirdly, the detection and use angles of the sensors can be adjusted according to different sitting posture heights of the same user, so that the influence of misdetection on normal use is avoided;

fourthly, a TOF sensor and an ambient light sensor are used, so that the sensing detection efficiency and accuracy are improved;

fifthly, the radio frequency communication function is added, the intelligent mobile phone can be connected to the cloud end through a smart mobile phone or a wireless gateway of a teacher and a parent, quality data of the light source can be uploaded to the cloud end through notification, reminding, logs and the like, and the teacher and the parent can supervise and supervise supervision together.

Drawings

FIG. 1 is a schematic view of a portion of the sitting posture adjusting device of the present invention;

FIG. 2 is a schematic view of a portion of the sitting posture adjusting device of the present invention;

FIG. 3 is a schematic view of a portion of the sitting posture adjusting device of the present invention;

FIG. 4 is a schematic block diagram of the sitting posture adjusting device according to the present invention;

FIG. 5 is a schematic side view of the sitting posture adjusting device according to the present invention;

fig. 6 is a schematic front view of the sitting posture adjusting device according to the present invention.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1-4, the present invention provides a sitting posture adjusting device for preventing myopia, which comprises a sensing component 10, a processing component 20, an output component 30 and a communication component 40, wherein the sensing component 10 comprises a plurality of TOF sensors 11 and an ambient light sensor 12, wherein the TOF sensors 11 detect whether the sitting posture of the reader/writer is correct or not, so as to prevent the sight distance from being too close or improper, and the ambient light sensor 12 detects the quality of the lighting source (classroom, home lighting) of the reader/writer, including illumination, color temperature, stroboscopic, color rendering index, etc.

The processing assembly 20 includes a microprocessor 21 and a memory 22, wherein the microprocessor 21 receives the sensing information of the sensing assembly 10, processes and outputs a control signal, and the memory 22 stores the current sensing information and control signal. The output component 30 includes a sound output 31 and a display output 32, wherein the sound output 31 outputs a prompt sound, and the display output 32 outputs a display signal, and the display signal can be displayed on an external display screen. The communication module 40 communicates with the processing module 20 and transmits information to an external terminal device.

As shown in fig. 5 to 6, in the sensing assembly 10, the sensing assembly 10 forms a sensing range, the position of the sensing range is adjustable, the number of the TOF sensors 11 is 3 in one embodiment, and the TOF sensors 11 respectively detect the head and the left and right breasts. Thus, the TOF sensor 11 outputs at least 3 sets of sensing signals, one of which is a head sensing signal and the other two of which are chest sensing signals, respectively. The head sensing signals comprise head characteristic signals such as eye signals, nose signals and mouth signals, and the chest sensing signals comprise chest characteristic signals such as shoulder signals, chest signals and neck signals. The TOF sensor 11 detects the distance between the characteristic parts and the desktop or the book, and outputs a deviation signal when a plurality of characteristic signals deviate from a normal range at the same time, otherwise outputs a normal signal.

In particular, the microprocessor 21 receives the output signal of the TOF sensor 11, wherein the microprocessor 21 sets a normal threshold, which in one embodiment may be set at a head distance of 50-60 centimeters and a chest distance of 40-50 centimeters. If all the characteristic signals of the TOF sensor 11 are within a normal threshold value, outputting a normal signal; when the head characteristic signal of the TOF sensor 11 deviates from the normal threshold value and the chest characteristic signal is within the normal threshold value, the normal signal is still output; when the head characteristic signal of the TOF sensor 11 deviates outside a normal threshold value and the chest characteristic signal also deviates outside a normal threshold value, a deviation signal is output.

Further, when the microprocessor 21 receives a normal signal, no processing is temporarily required; upon receiving the deviation signal, the microprocessor 21 outputs a deviation control signal, which is output to the output module 30 and controls the output module 30 to output corresponding adjustment signals, including a sound adjustment signal and a display adjustment signal.

The signals received and output by the microprocessor 21 are stored in the memory 22. On the other hand, the TOF sensor 11 detects a characteristic signal of the current user under normal conditions, and then combines with registration information of the current user to form a specific signal library of the current user, and stores the specific signal library in the memory 22. For example, under normal conditions, the distance between the head characteristic of Zhang III and the desktop is 55 cm, and the distance between the chest characteristic and the desktop is 50 cm; the distance between the head characteristic of the third Lisan and the desktop is 50 cm, the distance between the chest characteristic of the fourth Lisan and the desktop is 45 cm, and data in the database exclusive to the third Zhang and the database exclusive to the fourth Lisan are independent.

In particular, the internal microprocessor of the TOF sensor 11, enabled by the MCU through the EN signal, of the TOF sensor automatically generates a driving pulse, causing the "light emitting device" to send an illumination infrared light pulse. The reflected optical signals are converted into electric signals and internally reflected electric signals, the electric signals and the internally reflected electric signals enter a phase detection module, phase difference pulse signals are obtained through an internal high-speed front-end analog comparison circuit, then the electric signals are converted into voltage signals through an integrating circuit, analog quantity is converted into digital quantity through an ADC (analog to digital converter), an AD value is read by a main control MCU (microprogrammed control unit), and a growth value is converted through a conversion algorithm, so that the ranging function is completed.

The sensing assembly 10 further comprises an angle adjuster 13, the angle adjuster 13 being capable of adjusting the detection angle of the TOF sensor 11. In general, during the detection process, the detection range of the TOF sensor 11 is fixed, that is, the angle adjuster 13 faces the same user at the same sitting height to form a fixed sensing angle.

The first case requiring adjustment is that the sitting height of the same user is changed, as the characteristic signal is consistent with the registration signal, and the microprocessor 21 needs to confirm the current sitting height of the user. However, the microprocessor 21 calls the user registration information previously stored in the memory 22 to perform comparison, and if the comparison is normal, it is determined that the user is the current user. At this time, the microprocessor 22 calls the characteristic information of the previous user and the current user characteristic information, compares the characteristic information with the current user characteristic information to confirm that the height of the current user in the normal sitting posture changes, and outputs an angle adjusting signal to the angle adjuster 13, so as to adjust the detection angle of the TOF sensor 11.

The second condition to be adjusted is that different users use different characteristic signals, and at this time, the microprocessor 21 compares the characteristic information of the current user with the database in the memory 22, and if the characteristic information of a user in the database is obtained by comparison, an angle adjustment signal corresponding to the user is output to the angle adjuster 13, so as to adjust the detection angle of the TOF sensor 11; if the comparison result shows that the angle adjustment signal is not in the database, a database is newly established, and a new angle adjustment signal is output to the angle adjuster 13, so that the detection angle of the TOF sensor 11 is adjusted.

Specifically, the angle adjuster 13 is applied to a G-Sensor acceleration Sensor and a brushless motor, and measures the installation angle by using the gravity acceleration, thereby facilitating the self-diagnosis of the product whether the installation angle is correct.

Further, the ambient light sensor 12 in the sensing assembly 10 is configured to detect lighting data of a current desktop working environment, and the ambient light sensor 12 includes an illuminance value detecting module 121, a color temperature detecting module 122, a strobe detecting module 123, and a color rendering index detecting module 124, where illuminance refers to a luminous flux of received visible light per unit area, i.e., a luminous flux irradiated onto a unit area, and a unit of illuminance is a number of lumens per square meter (Lm), which is also called Lux: 1Lux is 1 Lm/m, and the illuminance unit is used in the field of lighting as one of the lighting quality standards. When children read and write, a reasonable illumination 'illuminance value range' needs to be ensured, otherwise, the vision of the children is damaged.

GB 5700-85 indoor lighting measuring method: the average illumination value on the desk surface of a classroom should not be lower than 150Lux, and the illumination uniformity should not be lower than 0.7. The average vertical illuminance of a local illuminating lamp on a blackboard of a classroom should not be lower than 200Lux illuminance uniformity and should not be lower than 0.7. GB 50034 and 2013 'architectural lighting design Standard' stipulate that the illumination for general writing and reading is not less than 300Lux, and ra is not less than 80. GB7793-2010 classroom lighting and lighting sanitary standard of primary and secondary schools stipulates that the illuminance of classroom class desktops should reach 300 Lux.

Therefore, the illumination value range is between 300 and 350Lux, and when the illumination value detection module 121 of the ambient light detector 12 detects that the current illumination value deviates from the normal range, an illumination adjustment signal is output to the output component 30 to control the output.

The color temperature is a unit of measure representing the color component contained in the light. Theoretically, color temperature refers to the color that an absolute black body would appear after it has been warmed from absolute zero degrees. After the black body is heated, the black body gradually turns from black to red, turns yellow and becomes white, and finally emits blue light. When heated to a certain temperature. The spectral components contained in the light emitted by a black body. This is referred to as the color temperature at this temperature, and is measured in "K" (Kelvin). When the color temperature of the illumination is too low, the eyes can be tired, the color discrimination is poor, and the vision can be reduced by long-term use of low color temperature illumination.

When the color temperature of the illumination is too high, eye fatigue or damage and even cataract can be caused, because the high color temperature illumination contains more short-wave light components (commonly called blue light). Blue light can penetrate the lens to the retina, causing atrophy and even death of the retinal pigment epithelium. The death of light-sensitive cells will lead to a loss of vision or even complete loss, which is irreversible. Blue light can also cause macular degeneration. The lens in human eyes absorbs part of blue light and gradually becomes turbid to form cataract, most of the blue light penetrates through the lens, especially the lens of children is clear and cannot effectively resist the blue light, and therefore macular degeneration and cataract are easily caused.

Since the wavelength of blue light is short, the focal point does not fall on the center of the retina, but is located a little bit further forward from the retina. To be clear, the eyeball is in a tense state for a long time, causing asthenopia. The long-time visual fatigue may cause the symptoms of deepening of myopia, appearing of diplopia, easy serialization during reading, incapability of concentrating attention and the like, and influences the learning and working efficiency of people. Blue light can inhibit the secretion of melatonin which is an important hormone influencing sleep, and the existing known effects are to promote sleep and regulate jet lag, so that the use of the blue light can cause low sleep quality and even difficulty in falling asleep. According to GB7793-2010 classroom lighting and lighting health standards of primary and secondary schools, the color temperature is preferably 3300-5500K.

Therefore, the color temperature range is between 3300-.

The lighting stroboflash refers to that a lighting source is unstable in light emission and periodically appears flickering and dimming, generally comes from the frequency of alternating current of a mains supply of 50/60Hz or the working frequency of a switching power supply supplying electric energy, whether the lighting source has stroboflash or not is an important parameter for measuring the lighting quality, and the lighting source containing flicker is harmful by international consensus.

Therefore, the illumination strobe ranges between 50/60Hz, and when the strobe detection module 123 of the ambient light detector 12 detects that the current illumination strobe deviates from the normal range, it outputs an illumination strobe adjustment signal to the output assembly 30 to control the output.

The color rendering index is a metering unit for quantifying the color rendering of a light source, the concept of the color rendering index is introduced, the color rendering index is determined to be 100 by taking a standard light source as a standard, and the color rendering indexes of the rest light sources are all lower than 100. The color rendering index of a classroom lighting source is not less than 80 as indicated in the standard of lighting and lighting hygiene in classrooms of schools of middle and primary schools.

Therefore, the illumination strobe range is between 80-100, and when the color rendering index detection module 124 of the ambient light detector 12 detects that the current color rendering index deviates from the normal range, a color rendering index adjustment signal is output to the output element 30 to control the output.

Specifically, the ambient light detector 12 is provided with a high-sensitivity optical converter integrated chip, and has ambient light and color (RGB) sensing and light source flicker detection functions. The sensor provides five concurrent ambient light sensing channels: red, green, blue, transparent, full bandpass. The RGB and clear channels have a UV/IR blocking filter, which allows accurate measurement of ambient light and through calculation of luminance, chromaticity and color temperature. Meanwhile, the function of directly detecting the flicker of the 50Hz or 60Hz ambient light is also integrated, and the flicker detection and the ambient light detection can be executed in parallel. The color detection has an independent gain configuration. In addition, the chip is internally provided with an IR infrared detection channel for inhibiting the interference of infrared light in the environment, such as infrared light generated by an infrared TOF sensor. The RGB channels of the sensor cover the detection range from 400nm to 700nm, and the whole visible light range is covered for collection. The infrared channel collected a wavelength of approximately 950 nm.

The communication component 40 includes a wireless gateway 41 and at least one communication module 42, wherein the wireless gateway 41 is an embedded dedicated device, is installed in a classroom, is used for servo of all "eye protection products" in the classroom, and is used for relaying all broadcast data, data logs and the like to a cloud server. The wireless gateway 41 is provided with internet connection modules such as a microprocessor, a backup power supply, a radio transceiver module, and 4G/5G/NB-IoT, and can collect, buffer, compress, package, and upload data in batches to the cloud. The wireless gateway 41 is an optional device, and can upload data to the cloud through a dedicated APP client of a teacher. Communication module 42 sets up to Bluetooth, WIFI wireless module etc. communication module 42 accessible "teacher" or "head of a family"'s cell-phone connection high in the clouds, to data such as high in the clouds transmission warning, log. Through the mobile phone App, teachers, parents, relatives and friends can supervise and manage through the cloud.

The communication module 40 further includes a timer 43 for counting the current user's usage time, and outputting a timing signal to the output module 30 when a certain timing time is reached.

The communication module 40 communicates with external terminals and may be provided with preventive and adjustment solutions to adjust the user's sitting posture. Considering that the adjustment to the optimal state at a time is difficult for the user to reach, in the prevention and adjustment scheme, the communication module 40 receives a control signal of an external terminal device and inputs the control signal to the microprocessor 21, and the microprocessor 21 processes the output current adjustment signal and performs the gradual adjustment for a certain time.

On the other hand, in the detection process, the detection assembly 10 simultaneously collects data of reading and writing postures, environmental light and reading and writing duration of three factors affecting myopia, associates the three factors affecting myopia with vision, and performs model analysis in the microprocessor 21, so as to find out key influence factors for different individuals, thereby performing targeted prevention; meanwhile, the eye using habits formed by the three factors are sent to the cloud, so that a supervisor (such as parents and teachers) can grasp the eye using habits of the teenagers in real time and help the teenagers to maintain or correct the eye using habits.

It should be noted that the power supply of the sitting posture adjusting device may be an internal power supply or an external power supply, and the internal and external arrangement of the power supply does not affect the operation of the device.

In the step (b) of the present invention,

In the above adjusting method, further comprising the steps of:

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, and the scope of protection is still within the scope of the utility model.

Claims

1. A sitting posture adjustment device for preventing myopia, the sitting posture adjustment device acquiring characteristic information of a detected user, comprising:

a processing assembly including a microprocessor and a memory, said microprocessor receiving said TOF sensor signal and outputting a processed signal, said memory processing said microprocessor signal and said TOF sensor signal;

and the communication component is communicated with the output component and transmits the output signal of the output component to an external terminal.

2. A sitting posture adjustment device for preventing myopia according to claim 1, wherein the sensing assembly further comprises an ambient light detector, and the ambient light detector acquires current ambient information and transmits the current ambient information to the microprocessor for processing.

3. A sitting posture adjustment device for preventing myopia according to claim 2, wherein the output unit comprises a sound output and a display output, and the microprocessor controls the sound output and the display output respectively to output corresponding actions.

4. The sitting posture adjustment device for preventing myopia according to claim 2, wherein the communication module comprises a wireless gateway and a communication module, the wireless gateway is an external device and receives the processed information of the microprocessor, and the communication module is a wireless communication module and transmits the information of the microprocessor to an external terminal.

5. The sitting posture adjustment device for preventing myopia according to claim 2, wherein the ambient light processor comprises an illuminance value detection module, a color temperature detection module, a strobe detection module and a color rendering index detection module, respectively detecting the illuminance value, the color temperature, the strobe and the color rendering index in the environment, and transmitting the detection information to the microprocessor.

6. A sitting posture adjustment device for preventing myopia according to claim 4, wherein the communication module further comprises a timer for counting the time of use of the user and transmitting the timing information to the microprocessor.

7. A sitting posture adjustment device for preventing myopia according to any one of claims 1-6, wherein one of the TOF sensors detects the related characteristic information of the head of the user, and the other two TOF sensors detect the related characteristic information of the left and right breasts of the user, and both transmit the characteristic information to the microprocessor.