(19)
(11) EP 2 581 891 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
07.05.2014 Bulletin 2014/19

(43) Date of publication A2:
17.04.2013 Bulletin 2013/16

(21) Application number: 12188123.9

(22) Date of filing: 11.10.2012
(51) International Patent Classification (IPC): 
G08B 25/00(2006.01)
 G08B 29/06(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 12.10.2011 IE 20110457

(71) Applicant: E.I. Technology Limited
Shannon, County Clare (IE)

(72) Inventors:
  • Byrne, Michael
    Limerick (IE)
  • Duignan, James
    Limerick (IE)
  • Guinee, Michael
    Limerick (IE)
  • Doyle, Rona
    Clare (IE)
  • Flynn, Fergus
    Clare (IE)

(74) Representative: Weldon, Michael James et al
John A. O'Brien & Associates Third Floor, Duncairn House, 14 Carysfort Avenue
Blackrock, Co. Dublin
Blackrock, Co. Dublin (IE)

   


(54) A low current RF alarm device mesh network


(57) A wireless alarm device network (1) comprises alarm devices (A-J, L) each having a processor, a wireless communication interface, and a condition sensor. The devices are communicate by wirelessly transmitting messages, and in a learning mode, automatically register in a monitoring cluster according to received signal strengths. A device (A-J, K) recognises a device as being in its cluster if at least received signal strength exceeds a threshold. Each device is adapted to monitor each other device or devices in its cluster, and to generate an alert if it determines that a device in its cluster is not sending messages.







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