Taking MC9S08AC16 MCU and MMA7260QT accelerometer as the core, this paper integrates KC19 CDMA wireless com-munication module, into the design of the fal defection system and presents. the general design, hardware and software design.This defector can be used to send out the location and alarm information of the fal accurately and timely.%设计了一种跌倒检测系统，以MC9S08AC16单片机和MMA7260QT加速度传感器为核心，结合KC19 CDMA无线通信模块。对该系统进行了总体、硬件及软件设计，可准确及时的发送跌倒定位报警信息。
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