基于单片机的时钟显示型电话报警器设计  

The design of clock-display phone alarm based on SCM

作　　者：史泽东[1] 李泽滔[1] 

机构地区：[1]贵州大学电气工程学院,贵州贵阳550025

出　　处：《自动化与仪器仪表》2013年第5期76-77,80,共3页Automation & Instrumentation

摘　　要：随着物质生活水平的不断提高,人们对个人安全、家庭财产安全和公共场所安全越来越重视,安全已成为一种市场需求。基于电话通信网覆盖范围广泛的特点,本文设计了一款简洁、经济的电话报警器。本设计以AT89S52单片机为控制核心。烟雾传感器MQ-2检测是否发生可燃气体(如:煤气、天然气、氢气、甲烷、丙烷和丁烷)泄漏。DTMF收发芯片MT8880编码产生和解码双音频信号。语音芯片ISD1820完成语音录制、提示及播放功能。矩阵键盘及LCD 1602用作人机接口,同时采用时钟日历芯片DS12C887获取当前时间、星期及日期。With the continuous improvement of living standards, people on their own personal safety, safety of family property, and safety of public places increasing emphasis, security has become a market demand. Based on telephone communication network covering the wide range of feature, this paper designed a simple and economical phone alarm. In this design, AT89S52 microcon- troller is adopted as the control core. Smoke sensor MQ-2 detects the occurrence of combustible gas （such as： gas, natural gas, hydro- gen, methane, propane, and butane） leak. DTMF transceiver chip of MT8880 encodes and decodes dual audio signals. Voice chip of ISD1820 completes voice recording, tips and playback. Matrix keyboard and LCD 1602 are used as a man-machine interface, while using the clock calendar chip of DS 12C887 to get the current time, week and date.

关 键 词：电话报警器 AT89S52 DTMF MT8880 DS12C887 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构]