WIRELESS FIRE ALARM CAPABLE OF RADIO INTERLOCKED ALARM, AND FIRE ALARM SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a fire alarm system for transmitting radio interlock control signals that prevents a communication failure due to simultaneous relay transmission of radio signals by a plurality of fire alarms. SOLUTION: Slave units 1 have: an interlock control signal generation function of transmitting an interlock control signal including first ID information when a fire is detected; and a relay function of generating and transmitting an interlock control signal including the first ID information if a received interlock control signal includes second ID information. A master unit 1A has: an interlock control signal intercept function of starting an interlock control state when the interlock control signal is transmitted, and finishing the interlock control state immediately without relay transmission if an interlock control signal including the second ID information is received within a predetermined time; and a regeneration function of transmitting the interlock control signal including the first ID information and starting to measure the time again unless an interlock control signal including the second ID information is received within the predetermined time. COPYRIGHT: (C)2008,JPO&INPIT