Implementing method of voice-recognition-based secondary door access control system of smart home

The invention discloses an implementing method of a voice-recognition-based secondary door access control system of smart home. The implementing method comprises the following steps of (1) collecting sounds of a pet, inputting sounds of the pet in different states into a database, and establishing a standard database according to sound duration, sound volume and sound frequency; (2) inputting the sounds into the database and comparing the sounds to data in the standard database when the pet stays at home alone and produces the sounds, and transmitting information to a remote user terminal when the sound duration, sound volume and sound frequency are the same with the data in the standard database; and (3) sending out a command to control a secondary door to be opened or closed as needed after a user receives the information by using the remote user terminal. By the method, the sounds of the pet can be detected in real time, relevant information is transmitted to a mobile phone terminal through a GPRS (general packet radio service) transmitting and receiving module, and opening and closing of the secondary door are controlled through the mobile phone terminal. By the method, the problem that the existing access control system cannot control entering and exiting of pets is solved.