本论文简要介绍了课题研究的目标和意义，通过智能居家安全系统在国内外的研

This paper briefly describes the objectives and significance of the study, in the current research as well as analysis of the actual situation through intelligent home security system, designed a safe, practical and convenient control system. Then describes in detail the STC89C51 microcontroller, MQ-2 smoke sensor, MQ-5 gas sensors, the LCD1602 liquid crystal display, sound and light alarm module hardware design; then based software development environment, the effective completion of the data monitoring and processing, status display, abnormal alarm and other features of the software design. Finally, the use of Proteus software simulation debugging, and then all the alarm monitoring achievement testing. Finally, real-time field monitoring room safe state.

本论文简要介绍了课题研究的目标和意义，通过智能居家安全系统在国内外的研究现状以及实际情况分析，设计了一种安全，实用，方便的控制系统。然后详细介绍了STC89C51单片机、MQ-2烟雾传感器、MQ-5气体传感器、LCD1602液晶显示器、声光报警等模块的硬件电路设计；然后基于软件开发环境，有效完成了数据监测与处理，状态显示，异常报警等功能的软件设计。最后，利用Proteus软件进行仿真调试，进而都各项监测报警功能实现情况进行检测。最后通过实时实地监测室内安全状态。

This paper briefly introduces the goal and significance of the research. Through the analysis of the research status and actual situation of intelligent home safety system at home and abroad, a safe, practical and convenient control system is designed. Then it introduces the hardware circuit design of STC89C51, mq-2 smoke sensor, MQ-5 gas sensor, LCD1602 liquid crystal display, acousto-optic alarm and other modules in detail; then based on the software development environment, it effectively completes the software design of data monitoring and processing, status display, abnormal alarm and other functions. Finally, the Proteus Software is used for simulation and debugging, and then all the monitoring and alarm functions are tested. Finally, through real-time field monitoring of indoor security status.