| 一种基于单片机的自动打铃系统的设计方法 |
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| 引用本文： | 陈茉莉,张会林,张洋洋. 一种基于单片机的自动打铃系统的设计方法[J]. 通信电源技术, 2014, 31(5): 19-21 |
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| 作者姓名： | 陈茉莉 张会林 张洋洋 |
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| 作者单位： | 上海理工大学光电信息与计算机工程学院,上海200093;上海市现代光学系统重点实验室,上海200093 |
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| 摘 要： | 文中所设计自动打铃系统由两部分组成：主控制中心和响铃终端.主控制中心是整个系统的中心模块,该模块以单片机AT89C51为核心,包括控制电路、显示电路.响铃终端由蜂鸣器、三极管、限流电阻、电压源和接地线构成.对该设备输入一定频率的高低电平便能产生铃声.
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| 关 键 词： | 单片机 主控中心 响铃终端 |
A Design Method of Automatic Bell System based on SCM |
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| CHEN Mo-li,ZHANG Hui-lin,ZHANG Yang-yang. A Design Method of Automatic Bell System based on SCM[J]. Telecom Power Technologies, 2014, 31(5): 19-21 |
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| Authors: | CHEN Mo-li ZHANG Hui-lin ZHANG Yang-yang |
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| Affiliation: | CHEN Mo-li, ZHANG Hui-lin, ZHANG Yang-yang (1. The College of Optical ＆ Electron Information Engineering, University of Shanghai for Science Technology, Shanghai 200093, Chinas2. Shanghai Key Laboratory of Modern Optical System , Shanghai 200093, China) |
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| Abstract: | The automatic bell system consists of two parts： the main control center and the bell terminal. The main control center is the center modules of the entire system. This module take SCM AT89C51 as the core, including the con- trol circuit , display circuit. The bell terminal is consisted of the buzzer, transistor, current limiting resistors, voltage sources, and grounding lines. The device input of a certain frequency high and low level will be able to produce ringtones. |
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| Keywords: | SCM main control center bell terminal |
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