地铁列车乘客紧急报警系统设计  

Passenger Emergency Alarm System for Metro Train

作　　者：赵晓峰 

机构地区：[1]上海海茹科技有限公司硬件部,上海200331

出　　处：《单片机与嵌入式系统应用》2011年第6期49-51,55,共4页Microcontrollers & Embedded Systems

摘　　要：在地铁列车乘客紧急报警系统的设计过程中,采用AT89C52实现主控制逻辑,报警主机和分机之间的通信使用基于MT8888的DTMF通信,并使用EPM1270实现CRC8算法,提高了通信的安全性和可靠性。该系统具有存储功能,利用自行设计的键盘可实现格式化存储器。When designing metro train＇s passenger emergency alarm system, AT89C52 is used to implement main control logic, commu- nication between alarm master and alarm slave is developed as DTMF with MT8888, and EPM1270 is used to implement CRC8 algorithm to improve safety and reliability of the communication. The system has the storage function, and implements format memory unit using designed keyboard.

关 键 词：MT8888 DTMF通信 CRC8算法 EPM1270 格式化存储器 

分 类 号：U231.7[交通运输工程—道路与铁道工程]