【摘要】 介绍了基于嵌入式系统在远程复位控制器中的研制与实现。系统采用AT89C52单片机作为控制核心,MT8870为音频解码芯片,以PSTN公话网为信号传输控制介质。系统包括语音电路、自动检测和摘机挂机电路,驱动电路等单元,着重描述了该系统的各模块组成、原理及具体的电路实现,该系统通用性较强,在实际应用中收到了很好的效果。更多还原

【Abstract】 The design and reallization of embedded system for far-distance reset control are introduced.In the system AT89C52 MCU is used as the controll core,MT8870 adopted as audio decode chip,and PSTN public telephone network taked as signal transmission facilities.The component of system includs sound circuit,auto detecting circuit and drive circuit,and the consisting and principle of blocking and concrete circuit realization are emphasized.The system of universality is wider,and has got prefect effect in practicle application.更多还原