摘要:火灾报警及联动消防系统是人们为了早期发现通报火灾，并及时采取有效措施，控制和扑灭火灾，而设置在建筑物中或其它场所的一种自动消防设施，是人们同火灾作斗争的有力工具。火灾报警及联动消防系统对现代建筑起着极其重要的安全保障作用，能有效地防止和减少火灾危害，解决火灾报警问题，对保护人身安全和财产安全具有现实意义。

　　　本文介绍了基于AT89S52单片机的火灾报警及联动消防系统实现的硬件结构和软硬件设计方法。系统以AT89S52单片机为控制，通过DS18B20进行温度采集，通过MQ-2进行烟雾检测，还具通讯报警功能，并且能通过继电器输出模拟消防联动系统，同时具有安全疏散指示灯。此系统读取方便、显示直观、功能多样、电路简洁、成本低廉等诸多优点，具有广阔的市场前景。

关键词 单片机；温度采集；液晶显示

Abstract:The fire alarm and fire fighting system is a powerful tool for early detection of the notification of fire, and promptly take effective measures to control and extinguish fires set in the building or other place of an automatic fire-fighting facility, to fight with fire. Fire alarm and fire protection system on modern architecture plays a vital security role, and can effectively prevent and reduce fire hazards, solve the problem of fire alarm to protect the personal safety and property security of practical significance.

　　　This article described the AT89S52 Microcontroller-based fire alarm and fire protection system hardware architecture and the hardware and software design methods. System for the control of the microcontroller AT89S52, and through the DS18B20 temperature acquisition by the MQ-2 smoke detectors, but also with communication and alarm functions, and through the relay output analog fire linkage system, but also has safe evacuation indicator. This system is easy to read, intuitive display, functional diversity, simple circuit, low cost and many other advantages, has broad market prospects.

Keywords  MCU  Temperature Acquisition  LCD