1、 火灾报警系统研究与实施 Research and Implementation of Fire Alarm System 指导教师签字 时 间 年 月 日 摘 要 随着“信息时代”的到来，传感器技术得到了飞速发展。传感器作为获取信息的 重要手段之一，广泛应用于机械、磁场变化、电子科技等领域。其中，电阻式火焰传 感器，由于其灵敏性能高、反应快、价格低廉的特点在火灾报警系统中的应用也越来 越广泛。 本文以电阻式火焰传感器和单片机技术为核心， 设计出了一款性能好且价格低廉 的红外火灾报警器。系统采用电阻式火焰传感器实现红外线检测，具有灵敏性能高、 反应快等优点，而且价格低廉，通过 A/D 数模转换
2、模块，实现模拟量转换成数字量； 采用的 STC89C52 单片机，其整合了 A/D 转换等资源，具有高速、低耗等优点。 以 STC89C52 单片机结合火焰传感器为核心的火灾报警器可实现根据红外线强 弱报警、红外线强弱显示、报警数据界限等功能。是一种结构简单、性能稳定、使用 方便、价格低廉、智能化的火灾报警器，这款火灾报警器具有一定使用价值。 关键字：火焰传感器 红外线报警器 STC89C52 单片机 Abstract With the coming of the Information Age, sensor technology has achieved rapid development
3、. As one of the important access to get information, its widely used in areas including machine, magnetic identify, electronic technology and others fields. Among them, the flame sensor has been increasingly widely used in the system of fire alarm becourse of its performance having advantages such a
4、s high sensitivity, quick response and low price. This essay concentrates on the flame resistance sensor and microcontroller technology . It has designed a new kind of the infrared fire alarm, with good performance and low price. The system adopts flame sensor resistance to perform infrared detectio
5、n, which it has the advantages like high sensitivity and quick response and low price. It transforms analog signal into digital signal by means of A/D digital-analog converter module.I adpopt STC89C52 SCM，which reorganize materials like A/D conversion, which has high speed and low energy consumption
6、. The fire alarms could perform such function as infrared intensity of the alarm, infrared strength of the display, alarm data limits ,which central port is a combination of STC89C52 SCM and flame sensor . It is simple structure and stable performance and its convenience and inexpensive and intelligent. It is of a certain useful value. Key words:Flame sensor Infrared alarm STC89C52 SCM I 目 录 第 1 章 绪论
