Touch locking circuit for continuously recording wearing duration of children prevention and control glasses

Abstract

The utility model discloses a children prevention and control glasses wearing duration continuous recording touch locking circuit, which comprises an acceleration sensor U5, an MCU, a U6 touch chip, a touch metal sheet and a touch reference capacitor C12, the acceleration sensor U5 is connected to the MCU through an SPI interface or an I2C interface SCL and an SDA pin, and the motion signal output of the U5 is connected to an interrupt input pin INT of the MCU through an interrupt pin INT1; the touch metal sheet is connected to the U6 touch chip, the touch reference capacitor C12 is connected to the U6 touch chip, and the output of the touch chip is connected to the input pin of the MCU. According to the utility model, a scheme of combining capacitive touch sensing and a three-axis acceleration sensor is adopted, and the scheme is beneficial to sealing, miniaturization and water prevention. And data can be automatically recorded when being worn and can be automatically stopped when not worn, so that the use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of eyewear technology, and in particular to a touch-locking circuit for continuously recording the wearing time of children's safety glasses. Background Technology

[0002] In recent years, the proportion of myopia among children and adolescents has been increasing. According to eye health experts and data from Essilor, Neo-Learning, and other myopia prevention lens manufacturers, children need to wear myopia prevention glasses for at least 12 hours a day to help prevent myopia from worsening. Therefore, timing the wearing of myopia prevention glasses is crucial. These glasses detect head tilt angle and ambient light intensity, and use a mobile app to alert children to improper eye use and remind them to adjust their eye habits in real time. Furthermore, through big data analysis of sitting posture, the relationship between wearing time, head tilt angle, light intensity, and changes in myopia degree is obtained.

[0003] Currently, myopia control glasses commonly use physical buttons for power on / off. However, since glasses are meant to be worn directly, adding buttons makes operation cumbersome, easy to forget, and bulky, hindering widespread adoption. Some solutions have also adopted capacitive touch sensing to record wearing time. However, while capacitive touch sensing achieves miniaturization, a new problem arises: various factors during wear can cause the touch to stop, mistakenly interpreting the glasses as not being worn and halting data recording. These factors include loosening due to movement, and drift caused by sweat, temperature, and humidity changes. Utility Model Content

[0004] The main purpose of this invention is to provide a touch-lock circuit that continuously records the wearing time of children's safety glasses, so as to solve the problems existing in the background art.

[0005] To achieve the above objectives, this utility model provides a touch-lock circuit for continuously recording the wearing time of children's safety glasses, including an accelerometer U5, an MCU, a touch chip U6, a touch metal plate, and a touch reference capacitor C12. The accelerometer U5 is connected to the MCU via an SPI interface or an I2C interface with SCL and SDA pins. The motion signal output of U5 is connected to the interrupt input pin INT of the MCU via the interrupt pin INT1. The touch metal plate is connected to the touch chip U6, the touch reference capacitor C12 is connected to the touch chip U6, and the output of the touch chip is connected to the input pin of the MCU.

[0006] Preferably, the MCU has an output pin for resetting the touch chip during charging, clearing potential lock-up errors in the touch chip.

[0007] Preferably, the accelerometer U5 is a six-axis or three-axis accelerometer.

[0008] Preferably, two or more touch metal sheets are used.

[0009] Preferably, two or more U6 touch chips are used.

[0010] Preferably, the touch reference capacitor is integrated inside the touch chip and does not require an external connection.

[0011] This utility model features a touch-locking circuit that continuously records the wearing time of children's safety glasses.

[0012] 1. The myopia control glasses use a combination of capacitive touch sensing and a three-axis accelerometer. This design facilitates sealing, miniaturization, and waterproofing. Data is automatically recorded while worn and automatically stops recording when not worn, making them convenient to use.

[0013] 2. This algorithm intelligently identifies the states of being removed, closed, and lowered by using angle and motion values ​​from the accelerometer to determine whether the glasses are still being worn. If the glasses are still being worn after being removed by touch, data recording continues; otherwise, recording stops.

[0014] 3. The mean absolute percentage error (MAPe) of the wearing time meets the 3% requirement. Typical test values ​​range from 0.1% to 0.5%, depending on the testing environment. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 A schematic diagram of a touch-locking circuit for continuously recording the wearing time of children's safety glasses, provided in this embodiment of the utility model. Figure 1 ;

[0017] Figure 2 A schematic diagram of a touch-locking circuit for continuously recording the wearing time of children's safety glasses, provided in an embodiment of this utility model. Figure 2 ;

[0018] Figure 3 The schematic diagram of a touch-locking circuit for continuously recording the wearing time of children's protective glasses is provided in this embodiment of the present invention.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0022] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0023] In this embodiment of the utility model, reference is made to Figures 1 to 3 A touch-lock circuit for continuously recording the wearing time of children's safety glasses includes an accelerometer U5, an MCU, a touch chip U6, a touch metal plate, and a touch reference capacitor C12. The accelerometer U5 is connected to the MCU via an SPI interface or an I2C interface with SCL and SDA pins. The motion signal output of U5 is connected to the interrupt input pin INT of the MCU via the interrupt pin INT1. The touch metal plate is connected to the touch chip U6, the touch reference capacitor C12 is connected to the touch chip U6, and the output of the touch chip is connected to the input pin of the MCU.

[0024] This embodiment intelligently identifies the states of the glasses—taken off, closed, and lowered—using angle and motion values ​​from an accelerometer to determine whether they are still being worn. If they are still being worn after the touch-to-disengage function is activated, data recording continues; otherwise, recording stops. The algorithm implementation process is as follows: Figure 3 As shown:

[0025] Based on the analysis of recorded big data, the relevant parameters were iterated multiple times to obtain the reasonable range of the relevant parameters as follows: 5 seconds when the glasses are removed, 15-30 seconds when the glasses are closed, 2-3 minutes when the glasses are completely still for a long time when they are lowered, and 5-10 minutes when the angle remains unchanged for a long time.

[0026] Furthermore, the MCU has an output pin used to reset the touch chip during charging, clearing potential lock-up errors. The MCU is responsible for receiving and processing data from the accelerometer and other possible auxiliary sensors (such as proximity sensors for further confirmation of wearing status), running the wearing time recording algorithm involved in this invention, realizing real-time analysis and duration statistics of the wearing status, and storing the relevant data in the local storage module or transmitting it to the connected parent-side APP or cloud server via a wireless communication module (such as Bluetooth, Wi-Fi, etc.) for convenient viewing and analysis by parents and medical staff.

[0027] In this embodiment, the accelerometer U5 is a six-axis or three-axis accelerometer. The accelerometer is a conventional acceleration sensor, and its installation direction is calibrated. It can detect acceleration along the horizontal direction of the frame (corresponding to the left-right movement of the child's head), the vertical direction (corresponding to the up-and-down nodding of the child's head), and the rotational direction around the frame axis (corresponding to the rotation of the child's head), providing crucial data for subsequent determination of whether the glasses are being worn.

[0028] In this embodiment, two or more touch metal sheets are used; two or more U6 touch chips can also be used. This increases the contact area and facilitates touch sensing. The touch reference capacitor is integrated inside the touch chip and does not require an external connection.

[0029] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A touch-locking circuit for continuously recording the wearing time of children's safety glasses, characterized in that: It comprises acceleration sensor U5, MCU, U6 touch chip, touch metal sheet and touch reference capacitor C12, the acceleration sensor U5 is connected to the MCU through SPI interface or I2C interface SCL, SDA pin, the motion signal output of U5 is connected to the interrupt input pin INT of the MCU through the interrupt pin INT1; the touch metal sheet is connected to the U6 touch chip, the touch reference capacitor C12 is connected to the U6 touch chip, and the touch chip output is connected to the input pin of the MCU.

2. A childproof eyewear wear duration recording touch lock circuit as claimed in claim 1, wherein: The MCU has an output pin for resetting the touch chip when charging and clearing the potential lock error of the touch chip.

3. A childproof eyewear wear duration continuous recording touch lock circuit as claimed in claim 1, wherein: The acceleration sensor U5 adopts a six-axis or three-axis acceleration sensor.

4. The touch-locking circuit for continuously recording the wearing time of children's safety glasses as described in claim 1, characterized in that: The touch metal sheet adopts two or more.

5. A childproof eyewear wear duration continuous recording touch lock circuit as defined in claim 1, wherein: The U6 touch chip adopts two or more.

6. A childproof eyewear wear duration continuous recording touch lock circuit according to claim 1, wherein: The touch reference capacitor is integrated in the touch chip and does not need to be externally connected.

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