基于单片机的光强检测报警器-毕业论文.doc

读万卷书 行万里路 PAGE 摘要 随着电子技术的发展、数字电路应用领域的扩展，现今社会，产品智能化、数字化已成为人们追求的一种趋势，设备的性能、价格、发展空间等备受人们关注。性能好的电子设备，对外围保护电路要求很高，尤其是精密仪器对光线要求等设备要求更高，为了延长设备的使用寿命。所以，在企业设备保护中，设计一款智能的光电检测报警电路尤为重要。 本设计采用单片机作为数据处理与控制单元，为了进行数据处理，单片机控制ADC0809采集光敏电阻与10K电阻分压，来感应光强弱变化。单片机数据处理之后，将当光照强度发送到LED进行显示。并通过蜂鸣器和LED进行声光报警。 关键词：单片机，ADC0809，光敏电阻，显示 ABSTRACT With the development of electronic technology, the expansion of the digital circuit applications, todays society, the product of intelligent, digital has become a trend for people to pursue, equipment performance, price, room for development, and so much attention. Good performance electronic devices, high external protection circuit, precision instruments, light requirements, equipment requirements, in order to extend the useful life of equipment. Therefore, in the protection of business equipment, the design of an intelligent photoelectric detector alarm circuit is particularly important. This design uses a microcontroller as data processing and control unit for data processing, the SCM ADC0809 acquisition photoresistor and 10K resistor voltage divider to sense the light intensity change. MCU data processing will be sent when the light intensity to the LED display. Sound and light alarm buzzer and LED. Keywords: MCU, ADC0809, Photoresistor,Display 目录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc318753732 摘要 PAGEREF _Toc318753732 \h I HYPERLINK \l _Toc318753733 ABSTRACT PAGEREF _Toc318753733 \h II HYPERLINK \l _Toc318753734 第1章 引言 PAGEREF _Toc318753734 \h 1 HYPERLINK \l _Toc318753735 1.1 课题背景 PAGEREF _Toc318753735 \h 1 HYPERLINK \l _Toc318753736 1.2 光强检测的意义与技术发展 PAGEREF _Toc318753736 \h 1 HYPERLINK \l _Toc318753737 1.3 课题内容和本人的主要工作 PAGEREF _Toc318753737 \h 2 HYPERLINK \l _Toc318753738 第2章 光强检测报警器的设计方案 PAGEREF _Toc318753738 \h 3 HYPERLINK \l _Toc318753739 2.1 系统的方案分析 PAGEREF _Toc318753739 \h 3 HYPERLINK \l _Toc318753740 2.2 单片机的选型 PAGEREF _Toc318753740 \h 3 HYPERLINK \l _Toc318753741 2.3 显示方案选择 PAGEREF _Toc318753741 \h 4 HYPERLINK \l