With the rapid advancement of network technology and communication technology, people not only have higher and higher requirements for the degree of home automation and informatization, but also have higher requirements for the flexibility of home equipment control and the convenience of external information acquisition. A series of new concepts such as home automation, smart home, network home, and digital home have emerged to represent a comfortable and convenient living environment.


In the smart home system, various sensors, home appliances, instrumentation equipment, security monitoring equipment, and audio-visual entertainment equipment use the existing computer gateway technology through the home control center to achieve the connection between the internal network of the home and the external network. Users can On any PC or mobile phone with a network connection, remotely monitor and control the devices in the home through a browser or mobile phone application. You can automatically remotely control electrical appliances such as household appliances in the home, and monitor the security situation in the home at any time. And automatic alarm, you can monitor CO2, temperature and humidity, PM2.5, etc. in the home at any time, and adjust and control to improve the living environment of the family in time. Provide people with a smart, comfortable and safe living environment.


However, users can only control smart home devices through mobile phone apps or PCs, and their operations are relatively cumbersome, which is contrary to the convenience and intelligence of home control advocated by the smart home concept. Therefore, how to expand the smart home system is a problem that the smart home system needs to solve at present.