【摘要】 给出了一种以EMC系列单片机为核心的智能无线联网预警系统的设计,介绍了该系统的无线发射、接收和与电话线联网的系统硬件电路的构成、软件设计及其实际应用情况。整个系统由1台主机和多个发射器组成,核心采用EM78P156E单片机。发射器配置不同功能的信号检测电路,采用载波为315MHz的数字调制无线发射,实现与主机的系统集成。具有主机与发射器对码、电话号码存入、遇警自动拨出电话和紧急求助等功能。更多还原

【Abstract】 An intelligent wireless early warning system based on EMC series microcontroller, which can be connected telephone net, is designed in this paper. The circuit diagram and its software of this system are also presented. Moreover, the situations in practice are introduced in detail.更多还原