基于单片机的火灾报警器设计摘 要随着现代生活质量的提升，人们对生命财产安全有了更高的重视。日常生活中随时可能因为操作的失误而引发火灾，给人民带来伤害。虽然在某种层面上可燃性气体能够给人们生活带来便利，但是仍然存在着较大的隐患。为了进一步保障人们的生命财产安全，设计一套安全可靠的系统对环境中的可燃性气体进行实时监测显得很有必要。本文设计了一套基于单片机 STC89C51 的报警系统，加入 MQ-5 传感器对环境中可燃性气体进行严密监控，采集数据后通过单片机核心模块再通过 LCD1602 显示器将可燃性气体的浓度显示出来。单片机处理数据时会与系统设定的浓度上下限值做对比，当超过范围值时会启动报警系统提醒屋主环境中可能存在可燃性隐患。整体系统设计较为简单实现的功能较为完善，在现实生活中具有较高的实用价值。关键词：可燃性气体；传感器；报警器；STC89C51 单片机Design of fire alarm based on single chip microcomputerAbstractWith the improvement of modern life quality, people pay more attention to the safety of life and property. In daily life may at any time because of the operation of the fault caused by fire, to the people. Although combustible gas can bring convenience to people's life on some level, it still has a big hidden danger. In order to ensure the safety of people's life and property, it is necessary to design a set of safe and reliable system for real-time monitoring of combustible gas in the environment.In this paper, a set of alarm system based on MCU STC89C51 is designed. Mq-5 sensor is added to closely monitor the combustible gas in the environment. After collecting data, the concentration of combustible gas is displayed through the core module of MCU and LCD1602 display. When the single-chip microcomputer processes data, it will compare with the concentration upper and lower limit set by the system. When the concentration exceeds the limit, the alarm system will be activated to remind the owner of pot...
