Patent ID: 6204768
Filing Date: 2001-03-20
Classification: G08B

Abstract:
A fire monitoring system capable of detecting a fire by connecting a plurality of fire sensors to a receiver via a transmission line and then transmitting detection data from the plurality of fire sensors repeatedly in predetermined order in response to respective instructions issued from the receiver;wherein each of the fire sensors comprises:a plurality of sensor portions of different types;sensor processors for outputting detection data of plural types, based on detection signals from the plurality of sensor portions; anda mode switching portion for switching a mode which corresponds to responding detection data in response to a mode switching instruction issued from the receiver, and sending selectively the detection data which corresponds to a current switched mode in response to a data request instruction issued from the receiver; andwherein the receiver comprises:a mode switching indicating portion for switching the mode by transmitting the mode switching instruction which selects the mode of the detection data to the fire sensors, anda fire judging portion for judging the fire by receiving the detection data which is sent from the fire sensors in response to transmission of the data request instruction;wherein said plural types of detection data include multi-sensor data which is corrected detection data from one of said plurality of sensor portions based on detection data from a remainder of the plurality of sensor portions.