智能上网防近视距离报警器 摘 要在这个知识经济时代，社会的快速发展，给我们的生活带来了无以言表的变化。每个领域都会有各种不同的创新从不一样的产品来体现，这些都给我们的生活来了不小的影响。本设计是完成一个智能上网防近视距离报警器。随着电子产品的普及，很多测距报警的系统开始进入人们的生活。防止近视报警器既是此中之一。利用超声波便是不错的选择。这篇论文讲述了运用超声波测距的基本原理与单片机相结合的方法，利用数据对超声波测距进行了验证。本课题的研究有助于更多的人摆脱近视的发生，硬件方面是以单片机为核心所设计的防近视距离报警器。【关键词】超声波，单片机，近视Intelligent Internet anti myopia distance alarmIn this rapid development of society, our daily life has changed dramatically. Every field will have a variety of different products to reflect, these have to our lives are not small impact.The design is to complete an intelligent network prevent distance alarm. With the popularity of electronic products, many ranging alarms start to enter people's life. Prevention of myopia alarm is not only one of this. Using ultrasound is a good choice. This paper introduces the basic principle of ultrasonic ranging and the combination of MCU, using data to verify ultrasonic ranging. The research of this paper will help more people to get rid of the occurrence of myopia, the hardware is a myopia distance alarm designed by microcontroller as the core.【Key Words】Ultrasonic, microchip, myopia 目 录1 绪论.................................................3 1.1 研究背景.....................................................................................................................................3 1.2 国内外研究现况...............................................................................................................................3 1.3 选题意义........................................................................................................
