通信电子线路课程设计--无线电子门铃.doc

目 录 摘要 I Abstrac II 1 无线电子门铃的基本原理 1 1.1 电路基本原理 1 1.2 、设计与调试要点分析 1 2 方案的设计 2 3 方案比较 3 4 单元电路的设计 4 4.1 信号发射端 4 4.2 信号接收端 8 5 仿真结果 11 6 心得体会 12 6 元件清单 13 8 参考文献 14 摘要 传统的门铃都为有线门铃，使用方便，极大地方便了大家的生活。如果在豪门大院或经常听不到门铃声的房主，有时总会不能及时接待来客，很是尴尬。现介绍如何制作一款无线遥控门铃，方便主人在房内各地使用，将门铃按钮安装在门上，来访者只要按下按钮，放在客厅、厨房或卧室的接收主机就会响起“叮咚”声或乐曲声，宏亮悦耳，告知有客人来了，距离在几米到几十米，一般都有15到20米远的距离。Abstrac The tradition door bell is put into use going to the lavatory all for wired door bell,extremely large everybodys local life. If in the rich and powerful family compound or the house-owner who cannot often hear the door tinkle of bells,the general association in the sometimes can not receive a guest in time , be awkward very much. Introduce the door bell how to make wireless one remote control now, the convenient host is put into use everywhere within the house , the door bell button is assembled on, the taking-over lead plane readjusting oneself to a certain extent in the living room , kitchen or bedroom only is capable to do clinkety-clank sound or music sound sounds , sonorous music pleasing to the ear , inform as long as the visitor pressing down a button, to there is guest having come, be at a distance of in several meters to several tens meters, have 15 to arrive at 20 meters distant distance in general. Wireless door bell extremely large life of convenient people. The wireless door bell has fully utilized modern science and technology , the characteristic bringing IC into play, use the cost making greatly lessening, have much advantage at the same time very much ratio wired tradition door bell , have the convenient rapid characteristic ! Key words: Door circuit Chip Wireless modem Simulation1 无线电子门铃的基本原理 1.1 电路基本原理 无线的电子门铃主要包括以下几个主要部分：触发开关，信号发射端，信号接收端，音频功放电路。 当客人来到家门口时，按下触发开关时，会使信号发射端发射出一个调频信号，通过信号接收端对调频信号解调，经过解调后的信号通过音频功放电路发出悦耳的音乐声音，提醒主人有客人来访，主人做出抉择：开门与否。原理框图如图1-1所示。 图1-1无线门铃原理基本框图 1.2 设计与调试要点分析 在设计无线控制产品时，由于无线电信号容易受环境因素的干扰，在没有专业设备的前提下，很难制作成功。另外无线数据传输和有线不同，传输的数据只在短时间内是稳定的，时间稍长便会受到干扰，因此在对数据进行传输时必须采用