METHOD FOR DETECTING FIRE OR OVERHEATING WITH USE OF DUPLICATED LINEAR THERMORESISTIVE SENSORS AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2017 - IPC G08B17/06 

FIELD: fire safety.

SUBSTANCE: method for detection of fire or overheating with the help of duplicated linear thermoresistive sensors, which consists in measuring the temperature by resistance of these sensors, monitoring their serviceability, determining the temperature in the monitored zone of fire or overheating, generating and transmitting information about fire or overheating, and about the detected malfunctions. Moreover, the resistance of groups of linear thermoresistive sensors, rather than of each sensor, is measured, and the missing information is calculated from the measurements taken, in addition, the composition of groups of linear thermoresistive sensors in the main and in the backup channels is different. A fire detection or overheating detection device comprising a fire detection unit consisting of a main and backup channels interconnected by an internal interface, and linear thermistor sensors. These sensors are integrated into the main and backup channels and are connected to the corresponding channels of the fire detection unit. In each of the channels of this unit, the resistance of linear thermoresistive sensors connected to it is measured, exchanging resulting information with another channel, calculating the temperature by the resistance of linear thermoresistive sensors, monitoring of the health of these sensors, formatting and transferring of information about fire or overheating to the fire protection system of control object, which are determined by the temperature in the zone of linear thermoresistive sensors location, as well as about the detected faults. Moreover, in the fire detection unit, the resistance of the groups of linear thermoresistive sensors, whose connection is different in the main and in the backup channels, is also measured, and the resistance of each linear thermoresistive sensor is calculated on the basis of these measurements.

EFFECT: increased availability for firefighting.

3 cl, 1 dwg