摘 要:为了改善超市的防火工作以及加强超市的消防安全管理,本文设计一个超市防火管理系统。本系统硬件电路主要包括单片机最小系统、A/D转换电路、烟雾信号调理电路和报警电路。本设计是由探测器来探测现场的温度和烟雾浓度,然后利用A/D转换电路,把原本单片机不能识别的模拟信号转变成为系统能够进行处理的数字信号,当数字信号被传送到单片机中之后,对信号进行分析和处理。如果经单片机处理后的数据超出了系统设定的数值范围,则单片机就会对报警电路发出指令,让报警电路发出相应的报警。仿真表明,本系统运行稳定,能够实现在烟雾浓度或温度发生异常时进行声光报警。37543 毕业论文关键词:防火报警系统;AT89C51;声光报警
Design of The Supermarket Fire Alarm System
Abstract:In order to improve the function of fire protection and strengthen the supermarket's safety management on the fire , the paper design a fire protection management system of supermarkets .The system hardware were composed of minimum system of microcontroller, A / D converter circuit, smoke signal adjust circuit and alarm circuit. This design can detect the temperature and the smoke by the smoke detector on the scene, and then use the A / D converter circuit to convert the original SCM which does not recognize the analog signals into digital signals that can be recognized, when the microcontroller received the digital signal's input ,then put it into analysing and processing. If the analysised data obtained by the SCM is beyond the pre-set value, then the MCU will issue instructions to the alarm circuit, let the alarm circuit emit corresponding alarm . The Simulation results show that the system is stable, can be achieved by emitting sound and light alarm when the smoke or temperature appears anomalies .
Key words: Fire Alarm System;AT89C51;Sound and Light Alarm
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