| 基于DTMF的煤矿井下安全警示系统的设计 |
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| 引用本文： | 陆静,王计元.基于DTMF的煤矿井下安全警示系统的设计[J].电子技术应用,2010,36(3). |
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| 作者姓名： | 陆静 王计元 |
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| 作者单位： | 上海电力学院,上海,200090 |
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| 基金项目： | 上海高校选拔培养优秀青年教师科研专项基金资助项目 |
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| 摘 要： | 介绍了以单片机AT89S52和DTMF信令解码芯片MT8870为核心,通过PSTN电话网络远程遥控煤矿井下安全警示系统的工作原理。从硬件接口和软件设计两方面阐述了铃流检测、模拟摘挂机、DTMF信令解码、密码检测、输入信号分析处理等功能的实现方法。
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| 关 键 词： | DTMF AT89S52 MT8870 安全警示 |
Design of safety warning system in coal mine based on DTMF |
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| LU Jing,WANG Ji Yuan.Design of safety warning system in coal mine based on DTMF[J].Application of Electronic Technique,2010,36(3). |
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| Authors: | LU Jing WANG Ji Yuan |
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| Affiliation: | LU Jing,WANG Ji Yuan (Shanghai University of Electric Power,Shanghai 200090,China) |
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| Abstract: | The working principle of remote control safety warning system in coal mine using PSTN telephone network is intro-duced, which is based on the single chip microcomputer AT89S52 and DTMF signaling decoder chip MT8870. The implement methods of various functions of ringing detection, simulation of picking up and hanging up the telephone, DTMF signaling decoder, password detection and input signal analysis and processing are clarified from the hardware interface and the software design aspects. |
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| Keywords: | DTMF AT89S52 MT8870 DTMF AT89S52 MT8870 safety warning |
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