基于电话网络的远程控制器的设计(硬件).docVIP

论文题目：基于电话网络的远程控制器的设计(硬件) 专 业： 自动化 本 科 生： 李伟 （签名）＿＿＿＿ 指导教师： 陈文燕 （签名）＿＿＿＿ 摘 要 本文主要介绍了一种以单片机AT8952和双音多频解码集成电路MT8870为核心，通过电话线路遥控的远程多路智能控制器。：电话遥控、双音频编解码、单片机控制、 Subject: Design of Remote Controller Base on PSTN（Hardware） Specialty: Automation Name: LiWei (Signature) Instructor:Cheng Wenyan (Signature) ABSTRACT This article introduces a AT89S52 to SCM and DTMF decoding IC MT8870 as the core, through the telephone lines of long-range multi-channel remoteintelligent controller. The controller through telephone lines and the dual-audio signal into a binary signal decoded into AT89S52 SCM accordingly to achieve handling of household electric appliances to the remote control. The remote controller hardware, including: ringing detection circuit, analog circuit extraction hang up, double-circuit audio codecs, voice prompt circuit and control circuits. The use of assembly language prepared by the system procedures. A ringing detection, automatic pick hang up, five password verification, voice prompts, select home appliances, and other functions, and eventually realize the control of household electric appliances. Can also be remote control of state for home appliances. The system easy to use, economical and practical, functional flexibility, not only can be used in home appliance control, but also widely used in other places of various types of equipment control. With the future of intelligent home appliances, network development direction. Key Words：Telephone remote control, DTMF decoder, SCM control, Household appliances control Thesis Type: Application 目 录 第1章 绪 论 1 1.1 选题背景 1 1.2 任务要求 2 第2章 总体设计 3 第3章 系统设计分析 5 3.1总体设计分析 5 3.2 硬件模块 6 3.2.1振铃音的检测 6 3.2.2自动摘挂机 6 3.2.3控制电器 7 3.2.4双音频解码 7 3.2.5双音频发送 7 3.2.6实时时钟 8 3.2.7语音提示 9 3.3软件模块 9 3.3.1信号音计数 9 3.3.2密码检测 9 3.3.3信号分析处理 9 3.3.4软件定时功能 10 第4章 硬件单元电路设计 11 4.1振铃检测电路 11 4.2模拟摘挂机电路 13 4.3双音频解码电路 14 4.4语音提示电路 16 4.5实时时钟电