Patent ID: 7283057

Claim:
A fire alarm spreading system, comprising: a robot cleaner which generates fire alarm data when smoke is detected while patrolling a specific area and transmits the fire alarm data, the robot cleaner comprising a microcomputer which searches for and recognizes a fire in response to detecting the smoke and controls a camera to photograph an area where the recognized fire is located; a temperature sensor which senses an ambient temperature while rotating under the control of the microcomputer when smoke is detected; and a wireless communication base station which receives the fire alarm data transmitted from the robot cleaner and transmits the received fire alarm data to a pre-set fire center, wherein the microcomputer searches for the fire by rotating the robot cleaner and measuring an ambient temperature of a plurality of directions with the temperature sensor, recognizes the fire by determining that an ambient temperature is greater than a reference temperature value, and controls the camera to photograph an area where the ambient temperature is greater than the reference temperature value.