FIELD: fire safety.
SUBSTANCE: invention relates to fire safety, namely to methods and devices for detecting fire or overheating at various technical facilities, including aircraft engine compartments. Method of detecting fire or overheating consists in the fact that temperature is measured in several zones of the monitoring object as per readings of linear thermal sensors; fire or overheating is determined from these temperatures, and information on fire or overheating is generated and transmitted. In order to determine fire or overheating, difference and sum of temperatures in different controlled zones are additionally compared with preset threshold values, and if these threshold values are exceeded, a signal on fire or overheat is generated. Fire detection or overheating device comprises fire detection unit, in which temperature is calculated based on readings of linear thermal sensors, which are connected to input of this unit, fire or overheating is determined by these temperatures, information on fire or overheating is generated and transmitted to the fire control system of the monitoring object. Besides, the fire detection unit additionally calculates differences and sums of temperatures in different controlled zones, the results of calculations are compared with the specified threshold values and if they are exceeded, a signal on fire or overheat is generated.
EFFECT: method of detecting fire or overheating and a device for its implementation are disclosed.
3 cl, 1 dwg
