FIRE ALARM SYSTEM Russian patent published in 2009 - IPC G08B17/00 

FIELD: fire safety.

SUBSTANCE: invention relates to fire alarm system equipment, for example, that of railway cars. The proposed system incorporating fire sensor unit and fire warning units differs in that the aforesaid fire sensor unit additionally comprises the 1^st and 2^nd relays with their inputs connected to the 3^rd and 4^th outputs of the 1^st microprocessor. Note that every aforesaid warning unit comprises additionally 2^nd rectifier, bistable relay with its 1^st and 2^nd inputs connected to 2^nd and 3^rd outputs of the 2^nd microprocessor, respectively.

EFFECT: expanded performances and higher reliability.

2 dwg