Abstract:  In order to realize the functions of environmental monitoring and fire alarm of smart home, a smart home fire alarm based on single chip microcomputer, multi-sensor, wireless transmission module and mobile phone client is designed. Keil u Vision4 and E4A are used as software development platforms. The real-time indoor temperature and humidity signal, natural gas concentration signal, smoke concentration signal and flame signal are collected by the sensor, processed by the single-chip computer, and the data is generated to the mobile phone client through the wireless transmission module to provide real-time home environment information for the user. The test results show that the device can realize the functions of home environment monitoring, fire alarm and mobile phone remote display alarm.

Key words:  smart home, fire alarm, multi-sensor, mobile client, wireless transmission