This paper briefly introduces the goal and significance of the subject research, and designs a safe, practical and convenient control system through the research status of intelligent home safety system at home and abroad and the analysis of the actual situation. Then the hardware circuit design of STC89C51 microcontroller, MQ-2 smoke sensor, MQ-5 gas sensor, LCD1602 LCD monitor, sound and light and GSM SMS alarm, etc. is introduced in detail, and then the software design of data monitoring and processing, status display, abnormal alarm and other functions is effectively completed based on the software development environment. Finally, the use of Proteus software for simulation and debugging, and then all monitoring alarm functions to achieve detection. Finally, the indoor safety status is monitored in real time.
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