ABSTRACT
At present, adolescent eyesight has become the domestic and international issues of
common concern. Data show that China's primary vision, low rate of
26.96%, 53.43% junior high school students, 72.8% senior high school
students, college students 77.95%. Especially the survey shows that 50% more of the
students and parents lack of vision care the most basic science
knowledge,harmfulness does not know ahead of time is not timely prevention andtreatment
of myopia, thus there are 41.6% low vision students did not take any corrective
measures, treatment and lack of professional organizations.
Based on the above reasons, this paper puts forward intelligent infrared vision
protection design instrument. Intelligent infraredeyesight protecting instrument mainly
includes the location, sensitiveand timing of three functions. The location and the
photosensitivesensor module is composed of the corresponding functions, can realize
the detection of the user distance and ambient light intensityand alarm
function. The processing module is composed ofSTC89C51 microcontroller running the
program, can realize time and through the alarm to prompt the time has
come for the function oflearning time. Generally speaking, the three function of
this designcan in effect at the same time, and through the alarm lights andbuzzer
alarm way to remind users to pay attention to eye health.
In this paper, through the practice proved the vision protector is feasible and has good
reliability, easy to use. In this paper, through the study of the electronic hardware
production and theoretical, for the latter part of the further design of multi-function vision
protectionand provide the reliable and effective source of data and informationon the basis
of improving the effectiveness of vision protection and reasonable measures taken.
Keywords: Sensor, ranging, infrared, eyesight protection
