Research on preventing false alarm of aircraft optical fire detection

The aircraft caught fire is a catastrophic failure mode. When there is a fire in the aircraft, it is necessary to detect and send the fire information to the pilot. Aircraft fire detection generally adopts contact or non-contact detection technology, of which non-contact detection technology generally adopts optical fire detection technology. Optical fire detection technology has a larger detection range, faster response speed and better maintenance characteristics. But the complex environment in which the aircraft is exposed often leads to false detector alarms. In this paper, from two aspects of optical fire detection principle and aircraft surrounding environment, through experiments and alarm logic research, the optical fire detection technology is designed to prevent false alarms, and good results are obtained, which has great reference value for the design of aircraft fire prevention system.