USB GATEWAY FOR HOME SECURITY

摘要

A USB gateway for home security is provided to protect a user against a danger by transmitting corresponding information to a central control center and also to a person when a gas leakage, a fire or an intrusion is detected. A fire sensor input(11) senses temperature or smoke in case of a fire. A gas leakage sensor input(12) detects an explosive gas such as LPG or LNG. A vibration sensor(13) recognizes an external intruder entering through a window. A magnet sensor(14) senses an intrusion through a door. An emergency switch(15) can be pressed to sound an internal siren in order to indicate an emergency state. An external relay output(17) is operated according to an internal relay contact point to send a rescue message to outside by using an external alarm output device such as a siren-lamp or a siren. In case of a power failure, an internal siren(16) is operated by using an internal battery(18).