毕业论文：基于P89LPC915单片机的双路控制热释电红外报警器汇.doc

桂林理工大学本科毕业设计·论文  PAGE  PAGE 32 摘 要 该系统是利用单片机控制的双路热释电红外报警装置，两路红外探头被动式接收信号，经过滤波、放大后送进单片机进行A/D处理，产生触发报警信号触发报警。这里采用的是8位高速A/D转换速度快，提高报警的灵敏度。该报警装置采用这种双路A/D读取信号方式比以往比较式报警器更具灵活性和可靠性。采用的是被动式接收更具有报警的隐蔽性的优点，闲时还可将单片机设置为低功耗状态，更加节能。 关键词： 双路控制；P89LPC915单片机 A/D模块； 抗干扰 低功耗 ；菲涅尔透镜 P89LPC915 Microcontroller Based Dual control of pyroelectric infrared alarm Student:ZENG Xiang-ning Teacher:CHEN Xiao-hui Abstract：The system is microprocessor controlled dual use of pyroelectric infrared alarm device. Two passive infrared sensor to receive signals. After filtering, amplification sent to the microcontroller A / D processing, generate an alarm signal is triggered alarm. Used here is 8-bit high speed A / D conversion speed, increase the sensitivity of the alarm. The alarm device using this dual A / D read signal manner than the previous comparative alarm more flexibility and reliability. Passive reception using the more subtle advantages of the alarm, leisure microcontroller can also be set to low power state, more energy. Key words： Dual Control；P89LPC915 Microcontroller；A / D Module；Interference；Low power consumption；Fresnel lens 目 次  TOC \o 1-3 \h \z \u  HYPERLINK \l _Toc294701936 摘 要  PAGEREF _Toc294701936 \h I  HYPERLINK \l _Toc294701937 Abstract  PAGEREF _Toc294701937 \h II  HYPERLINK \l _Toc294701938 1 课题背景  PAGEREF _Toc294701938 \h 1  HYPERLINK \l _Toc294701939 1.1红外线定义  PAGEREF _Toc294701939 \h 1  HYPERLINK \l _Toc294701940 1.2 红外线的应用  PAGEREF _Toc294701940 \h 1  HYPERLINK \l _Toc294701941 1.2.1 红外线的物理特性  PAGEREF _Toc294701941 \h 1  HYPERLINK \l _Toc294701942 1.2.2 红外传感器  PAGEREF _Toc294701942 \h 2  HYPERLINK \l _Toc294701943 1.2.3 主要应用领域  PAGEREF _Toc294701943 \h 2  HYPERLINK \l _Toc294701944 2 系统总体设计  PAGEREF _Toc294701944 \h 3  HYPERLINK \l _Toc294701945 2.1 系统设计原理  PAGEREF _Toc294701945 \h 3  HYPERLINK \l _Toc294701946 2.2 热释电红外传感器简介  PAGEREF _Toc294701946 \h 3  HYPERLINK \l _Toc294701947 2.3