In order to protect the safety of residents\' family property, a remote home security system is designed. With the STC single-chip microcomputer as the system core, through hardware circuit and software programming design, remote protection of the family can be realized. When no one is at home, if an emergency such as illegal entry or accidental fire occurs, on-site protection and rescue will be carried out under the control of the single-chip microcomputer, and the phone will be picked up. The voice chip will send the DTMF signal of the user number to the telephone line to realize the user\'s phone call and remote voice alarm, and the telephone signal recognition chip will recognize the telephone signal to handle busy tone and other situations. The experimental results show that the design can take rescue measures in time when an accident occurs and issue an alarm notification to the out-of-town user.
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