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CN-121985178-A - Control method and control device for preventing myopia of children

CN121985178ACN 121985178 ACN121985178 ACN 121985178ACN-121985178-A

Abstract

The application discloses a control method and a control device for preventing myopia of children. The control method comprises the steps of monitoring the real-time distance between a user and a television screen in a preset area in front of the television, identifying whether the user is a child, receiving the real-time distance after the user is identified as the child, comparing the real-time distance with a preset safety distance threshold, adjusting the emergent ray state of the television screen to a scattering state to shield a picture if the real-time distance is smaller than the safety distance threshold, and adjusting the emergent ray state of the television screen to a transparent state if the real-time distance is larger than or equal to the safety distance threshold to enable the picture to be clear. The technical scheme of the application can effectively help children establish long-term stable safe watching habits, and reduce the myopia risk of the children caused by watching television in a short distance.

Inventors

  • Feng Chaodi

Assignees

  • 河南万把单贸易有限责任公司

Dates

Publication Date
20260505
Application Date
20251224

Claims (10)

  1. 1. A control method for preventing myopia in children, the control method comprising: Monitoring the real-time distance between a user in a preset area in front of the television and a television screen, and identifying whether the user is a child; After confirming that the user is a child, receiving the real-time distance, and comparing the real-time distance with a preset safety distance threshold; if the real-time distance is smaller than the safe distance threshold, adjusting the emergent ray state of the television screen to a scattering state so as to shade the picture; And if the real-time distance is greater than or equal to the safety distance threshold, adjusting the emergent ray state of the television screen to a transparent state so as to enable the picture to be clear.
  2. 2. The control method according to claim 1, characterized in that the step of identifying whether the user is a child, comprises: Acquiring the height of a user, judging the height of the user with a preset height threshold, and identifying the user as a child if the height of the user is smaller than the preset height threshold; and/or acquiring facial features of the user, and identifying the age of the user based on a preset child facial feature model.
  3. 3. The control method according to claim 1, wherein the step of monitoring a real-time distance between a user and a screen of the television in a predetermined area in front of the television comprises: And monitoring the real-time distance between the user and the television screen in a preset area in front of the television according to a preset time interval, wherein the preset time interval is more than 2 seconds.
  4. 4. The control method according to claim 1, characterized in that before the step of monitoring the real-time distance between the user and the television screen in a predetermined area in front of the television, it comprises: and setting a safe distance threshold based on the parameter adjustment of the television, wherein the parameter of the television at least comprises a screen size, and the safe distance threshold is positively correlated with the screen size adjustment relationship.
  5. 5. The method according to claim 1, wherein the step of adjusting the state of the outgoing light of the television screen to the scattering state comprises: Collecting the ambient light intensity around the television in real time, and determining a scattering gradient according to the ratio of the real-time distance to the safety distance threshold; And adjusting the scattering parameter by combining the scattering gradient with the ambient light intensity, so that emergent light rays of the television screen are switched to the corresponding scattering gradient.
  6. 6. The control method of claim 5, wherein the scattering gradient includes at least a first light transmittance state, a second light transmittance state, and a third light transmittance state, the first light transmittance state having a light transmittance that is greater than the second light transmittance state, the second light transmittance state having a light transmittance that is greater than the third light transmittance state; determining a scattering gradient according to the ratio of the real-time distance to the safe distance threshold, comprising: When the real-time distance is 70% -100% of the safety distance threshold, determining that the scattering gradient is in the first light transmittance state; When the real-time distance is 40% -70% of the safety distance threshold, determining that the scattering gradient is in the second light transmittance state; and when the real-time distance is less than 40% of the safety distance threshold, determining that the scattering gradient is in the third light transmittance state.
  7. 7. The control method according to claim 6, characterized in that the control method further comprises: if the state that the real-time distance of the child user is smaller than the safety distance threshold exceeds the warning time is detected, gradually increasing the scattering gradient to the highest gradient, and carrying out voice prompt; If the child user is detected to fall back outside the safe distance threshold, gradually recovering the transparent state according to the scattering gradient within the specified time.
  8. 8. The control method according to claim 1, characterized in that the control method further comprises: Recording the close-range watching times and accumulated close-range stay time of the child user, and feeding back data to parents at regular intervals; And when the single-day close-distance watching times exceed the preset times or the accumulated time length exceeds the time upper limit, sending vision protection early warning information to parents.
  9. 9. The control method according to claim 1, characterized in that the control method further comprises: And receiving an exemption instruction sent by a parent, suspending adjustment of the emergent ray state of the television screen within a preset exemption time, and automatically recovering the normal monitoring state after the exemption time is over.
  10. 10. A control device for preventing myopia of children, wherein the control device is built in a television or is externally arranged at the front end of a television screen, and the control device comprises: The monitoring module is used for monitoring the real-time distance between a user and a television screen in a preset area in front of the television and identifying whether the user is a child or not; The comparison module is used for receiving the real-time distance after confirming that the user is a child and comparing the real-time distance with a preset safety distance threshold; the adjusting module is used for adjusting the emergent ray state of the television screen to a scattering state to shield the picture if the real-time distance is smaller than the safe distance threshold value, and adjusting the emergent ray state of the television screen to a transparent state if the real-time distance is larger than or equal to the safe distance threshold value to enable the picture to be clear.

Description

Control method and control device for preventing myopia of children Technical Field The invention relates to the technical field of myopia control, in particular to a control method and a control device for preventing myopia of children. Background With the popularization of televisions in home life, especially the enrichment of intelligent television content, the time for children to watch the television is increasingly longer, and from video-driven programs and educational programs to interactive games, the television becomes an important tool for daily entertainment and study of the children. However, children tend to be involuntarily approaching the television screen with the progress of the scenario due to weaker homemade strength in the physiological development stage, and some of the young children may even be watching close to the screen. The long-term accumulation of the eye ciliary muscle in tension and lens dysregulation will increase the risk of myopia, and the short-distance watching is one of the important causes of the continuous increase of myopia rate of children. The protection scheme aims at the short-distance television watching of children, wherein the main stream scheme directly cuts off the video signal of the television or pauses the current playing content. Although the mode can forcefully prevent children from continuing to watch in a short distance from a physical aspect, sudden interruption of television programs breaks the watching immersion of the children, and sudden interruption not only seriously breaks the watching experience of the children, but also extremely easily causes the contradicting emotion of the children, and partial children may possibly have crying and other resistant behaviors. It is difficult to help children establish a long-term stable safe viewing habit, and the problem of myopia risks caused by short-distance television watching of children cannot be solved. Disclosure of Invention Aiming at the defects in the prior art, the control method for preventing the myopia of the children can effectively help the children to establish a long-term stable safe watching habit, and reduce the myopia risk of the children caused by watching television in a short distance. The application provides a control method for preventing myopia of children, which comprises the following steps: Monitoring the real-time distance between a user in a preset area in front of the television and a television screen, and identifying whether the user is a child; After confirming that the user is a child, receiving the real-time distance, and comparing the real-time distance with a preset safety distance threshold; if the real-time distance is smaller than the safe distance threshold, adjusting the emergent ray state of the television screen to a scattering state so as to shade the picture; And if the real-time distance is greater than or equal to the safety distance threshold, adjusting the emergent ray state of the television screen to a transparent state so as to enable the picture to be clear. In one aspect, the step of identifying whether the user is a child comprises: Acquiring the height of a user, judging the height of the user with a preset height threshold, and identifying the user as a child if the height of the user is smaller than the preset height threshold; and/or acquiring facial features of the user, and identifying the age of the user based on a preset child facial feature model. In one aspect, the step of monitoring a real-time distance between a user and a television screen in a predetermined area in front of the television comprises: And monitoring the real-time distance between the user and the television screen in a preset area in front of the television according to a preset time interval, wherein the preset time interval is more than 2 seconds. In one aspect, before the step of monitoring the real-time distance between the user and the television screen in a predetermined area in front of the television, the method comprises: and setting a safe distance threshold based on the parameter adjustment of the television, wherein the parameter of the television at least comprises a screen size, and the safe distance threshold is positively correlated with the screen size adjustment relationship. In one aspect, the step of adjusting the state of outgoing light on the television screen to a diffuse state includes: Collecting the ambient light intensity around the television in real time, and determining a scattering gradient according to the ratio of the real-time distance to the safety distance threshold; And adjusting the scattering parameter by combining the scattering gradient with the ambient light intensity, so that emergent light rays of the television screen are switched to the corresponding scattering gradient. In one aspect, the scattering gradient includes at least a first light transmittance state, a second light transmittance state, and a third light transmit