Title:
WIRELESS FIRE ALARM FOR WIRELESS INTERLOCKING ALARM, AND WIRELESS FIRE ALARM SYSTEM
Document Type and Number:
Japanese Patent JP2008009480
Kind Code:
A
Abstract:
To prevent such a phenomenon that any communication failure is caused due to the overlapping of transmitted interlocking control signals, and that interlocking alarm is not available since wireless signals are simultaneously relay-transmitted by a plurality of fire alarms.
A relay delay time based on the product of a registration number stored in a setting storage means 13 and a predetermined unit time is calculated, and in receiving an interlocking control signal, a wireless communication control means 15 makes an alarm control means 16 start interlocking alarm, and relay-transmits the received fire signal after the lapse of the calculated relay delay time.
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Inventors:
NAOHARA HAJIME
OKUMURA KOICHI
KAWAGUCHI MASAHIRO
OKUMURA KOICHI
KAWAGUCHI MASAHIRO
Application Number:
JP2006176138A
Publication Date:
January 17, 2008
Filing Date:
June 27, 2006
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS LTD
International Classes:
G08B17/00
Attorney, Agent or Firm:
Hiroyuki Nakai