Optimization design of Marine electric fire warning system

According to the characteristics of ship electrical fire, the occurrence process of electrical fire is divided into five stages: initial, precombustion, smoldering, extending and extinguish. In order to improve the early warning effect of ship electrical fire, a classified warning system of ship electrical fire is designed. In initial stage, the system can carry out fault early warning, on the basis of the circuit fault characteristics of leakage, arc and temperature rise, and then eliminate the fire hazard at the source. In the stage of precombustion and smoldering, infrared thermal imager and gas analyzer are used for active detection to improve the comprehensive detection and alarm ability of fire.