毕业设计-防盗报警信号无线发射与接收机的设计.doc

目 录 摘要： 1 Abstract 2 1 绪论 3 1.1 防盗报警器研究的背景及意义 3 1.1.2红外无线防盗报警系统的发展现状 6 2 系统设计方案论证与方案选择 8 2.1 系统设计方案 8 2.2.1原理框图 9 2.2.2管脚说明 10 2.2.3工作原理。 10 2.2.4 编码芯片LX2262引脚图与功能 12 2.2.3 解码芯片LX2272引脚图与功能 13 2.3无线发射芯片CDT-88引脚图 14 2.4 PCR1A引脚图及介绍 16 3 硬件电路的设计 17 3.1 硬件电路具体设计 17 3.1.1系统硬件结构图主要分三个部分： 17 3.1.2系统工作方式 17 3.2电源设计 18 3.3 编码与发射电路设计 19 3.3.1 编码发射电路介绍 19 3.3.2工作方式 21 3.4 数据解码与接收电路设计 21 3.4.1无线接收电路 21 3.5报警电路设计 22 参考文献 23 4 总结 24 致谢 26 防盗报警信号无线发射与接收机的设计 摘要：无线技术已经成为先进科学技术的重要组成部分，它在各领域都得到广泛的应用。用作防盗监控报警器，具有良好的隐蔽性，抗干扰能力强，而且使用不分白昼。本设计的目的在于设计出一个具有实用价值的、性能较高的无线防盗报警器。实现的原理是热释电红外传感探测器感应到入侵者的红外热辐射(人体体温)，将其转换成超低频信号（或通过对射电路发射的红外线被遮挡时产生低频信号），经电路放大编码，然后调制发射信号，再由接收机接收。利用无线通信技术实现二机（检测器，主机）分离。检测器是利用红外人体检测探头检测预先设定好的范围内的情况，一旦有危险便向主机发出信号；而主机功能是通过无线接受信号，再经集成电路处理，然后用发光二极管区分出信号发出的具体区域。该设计成果误报率较低、安装和配置容易、成本低、使用非常方便的特点。由于我家是承包建筑的，平时工地机器比较分散，电动机经常被盗，用有线防盗在工地这种环境下不太适用，该装置在这样的环境中具备一定的实用性。 关键字：红外探测；无线发射；无线接收；防盗报 Abstract: Advanced wireless technology has become an important part of science and technology .It has been implied in various fields widely. As a burglar alarm monitoring with a good concealment and strong anti-interference, it can be used day and night. The purpose of this essay is to design a practical example, which having a wireless burglar alarm. The basic principle of the alarm is the pyroelectric infrared sensor infrared detector sensitive to thermal radiation intruders (human body temperature), and convert it into ultra-low-frequency signal (or radio circuits by the infrared emission low-frequency signal is generated when blocked), Amplified by the circuit code, then modulated and transmission the signal and received by the receiver latter. Using wireless communication technology 2 machines (detectors, host) separation is the use of infrared detector probe detection of human testing within a predetermined situation, once it is dangerous to the host signal Pianxiang. The main function is to accept a wireless signal processing via single chip, and then send the signal light