EP 2232454 A4 20110105 - A SYSTEM AND METHOD FOR DETECTING TAMPERING OF A UTILITY METER
Title (en)
A SYSTEM AND METHOD FOR DETECTING TAMPERING OF A UTILITY METER
Title (de)
SYSTEM UND VERFAHREN ZUM DETEKTIEREN VON MANIPULATION EINES VERSORGUNGSZÄHLERS
Title (fr)
SYSTÈME ET PROCÉDÉ DE DÉTECTION DE LA FALSIFICATION D'UN COMPTEUR D'ÉNERGIE
Publication
Application
Priority
- US 2008088253 W 20081223
- US 909607 P 20071226
Abstract (en)
[origin: WO2009086432A1] A tamper alarm circuit for detecting a tampered condition of a utility meter is disclosed. The tamper alarm circuit has a transducer coupled to an amplification circuit which is coupled to a detection circuit, the detection circuit generating an alarm condition when the detection circuit determines that a voltage signal generated by the transducer and amplified by the amplification circuit has reached a predetermined threshold.
IPC 8 full level
G08B 23/00 (2006.01); G01D 5/00 (2006.01); G01F 15/00 (2006.01); G01F 25/00 (2006.01); G01R 11/24 (2006.01); G01R 21/133 (2006.01); G08B 29/04 (2006.01)
CPC (source: EP)
G01D 4/02 (2013.01); G01R 11/25 (2013.01)
Citation (search report)
- [X] US 5086292 A 19920204 - JOHNSON DENNIS F [CA], et al
- [X] US 2004021568 A1 20040205 - SEAL BRIAN KEITH [US], et al
- [X] US 5473322 A 19951205 - CARNEY MURRAY C [US]
- [X] US 2003079774 A1 20030501 - REYMAN MARK [US]
- [X] US 2007103334 A1 20070510 - SONI DEVENDRA K [US]
- [X] US 6774807 B1 20040810 - LEHFELDT CARL ROBERT [US], et al
- [A] US 5488565 A 19960130 - KENNON JERRY M [US], et al
- [A] US 5621397 A 19970415 - MUTCH ALAN J [GB], et al
- [A] GB 2183348 A 19870603 - MANCHESTER LASERS, et al
- [A] US 2005039040 A1 20050217 - RANSOM DOUGLAS S [CA], et al
- [A] US 6362745 B1 20020326 - DAVIS GLENN A [US]
- [A] US 5940009 A 19990817 - LOY GARRY M [US], et al
- [A] US 5750983 A 19980512 - SWANSON SCOTT C [US]
- See references of WO 2009086432A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2009086432 A1 20090709; AU 2008345078 A1 20090709; AU 2008345078 B2 20130117; CA 2710919 A1 20090709; CA 2710919 C 20130813; EP 2232454 A1 20100929; EP 2232454 A4 20110105; NZ 586050 A 20130426
DOCDB simple family (application)
US 2008088253 W 20081223; AU 2008345078 A 20081223; CA 2710919 A 20081223; EP 08866536 A 20081223; NZ 58605008 A 20081223