人体红外线报警器的设计.doc

人体红外线报警器的设计 [摘 要] 本课题是应用所学习的电路知识和Protel99SE知识，在学校已有的电路板、红外线传感器、信号放大电路设计一个能够实现检测并能发出警报的人体红外线报警器。拟采用红外线传感器作为感应人体的基本器件，利用接收器对发射来的信号进行接收，同时采用发射器对信号进行发声分析处理，最后进行报警功能。再利用学过的Protel99SE知识，根据功能需求进行电路板的绘制与调试，保证软硬件正常工作，完成产品相应功能。人体红外线报警器主要功能是采用了红外线传感器，它的制作简单、成本低、安装比较方便，而且防盗性能比较稳定，抗干扰能力强、灵敏度高、安全可靠。这种防盗器安装隐蔽，不易被盗贼发现。本设计电路主要包括信号放大电路、比较电路、音响报警电路、开机延时电路和12V电源电路组成。分析人体红外线报警器的各部分功能电路原理，运用Protel99SE完成原理图的绘制，并制作电路板完成报警器，从而完成整个设计。 [关键词] 红外线 电压比较器 放大电路 报警器 Human body infrared alarm Abstract: This paper is the application of the learning circuit knowledge and knowledge of Protel99SE, the school already has a circuit board, an infrared sensor, a signal amplification circuit design can realize detection and alarm of human body infrared alarm. The infrared sensor as the sensing body basic device, use the receiver to transmit to and receive a signal, while using the transmitter signal sound analysis, finally alarm function. Then using the learned knowledge of Protel99SEL, according to the functional requirements of circuit board drawing and debugging of hardware and software, to ensure normal work, completes the product function. Human body infrared alarm system main function is the use of infrared sensors, it has the advantages of simple manufacture, low cost, is convenient for installation, and the anti-theft performance is relatively stable, strong anti-interference ability, high sensitivity, safe and reliable. This anti-theft device concealed installation, is not easy to be the thief found. The design of the circuit mainly comprises a signal amplifying circuit, a comparison circuit, a sound alarm circuit, a starting delay circuit and 12V circuit. Analysis of human body infrared induction alarm function of each part of circuit principle, using Protel99SE completed a schematic drawing, and using Multisim simulation debugging the circuit alarm parameters. Key words:Infrared alarm voltage comparator circuit 目录 第一章 前言 1 1.1本课题研究的背景以及现实意义 1 1.2 本课题对于专业知识的综合应用情况 2 第二章 人体红线报警器的工作概述