Myopia-preventing photoelectric reminder

Abstract

The invention discloses a myopia-preventing photoelectric reminder and belongs to the technical field of photoelectricity. The myopia-preventing photoelectric reminder comprises a transmitting module, a receiving circuit and a controlling and alarming module which are in sequential electric connection, wherein the transmitting module comprises a multivibrator circuit and a transmitting circuit, the transmitting circuit comprises a plurality of groups of infrared transmitters in parallel connection, and the multivibrator circuit is electrically connected with the transmitting circuit and drives the infrared transmitters to emit a certain infrared light; the receiving circuit comprises a plurality of groups of infrared receiving diodes in series connection, and the infrared receiving diodes is in one-to-one correspondence with the infrared transmitters horizontally; the controlling and alarming module comprises a reset circuit, a clock oscillating circuit, a master controller and a sound-light alarm circuit, the reset circuit and the clock oscillating circuit are connected with the input end of the master controller, and the output end of the master controller is connected with the sound-light alarm circuit. The myopia-preventing photoelectric reminder has the advantages of high detection precision, stable performance, flexible structure and capability of meeting individualized requirements on secondary development.

Description

technical field [0001] The invention relates to the field of photoelectric technology, in particular to a photoelectric reminder for preventing myopia. Background technique [0002] The incidence of myopia in my country ranks the top two in the world, and the number of people ranks first in the world. Among them, myopia is caused by bad environmental factors, and environmental factors can strengthen the prevention of myopia by improving the eye environment and paying attention to developing good eye habits. Prevention, in the face of the pressure to go to school, Chinese teenagers have to work at desks for a long time, and in today's information age, computers are also an indispensable way for teenagers to acquire knowledge and entertainment. When teenagers face books, homework, computer screens, and tablet screens, they are often too focused to maintain a reasonable eye distance for a long time, resulting in long-term close eye use, which can easily cause visual fatigue and ...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned invention still has shortcomings: the structure is fixed and relatively complicated; the monitoring accuracy is not high enough, and the performance is not stable enough; Harm of Cumulative Effects

Images