EP 1287508 B1 20040901 - SELF-ADJUSTING ALARM DEVICE WITH LOW ENERGY CONSUMPTION
Title (en)
SELF-ADJUSTING ALARM DEVICE WITH LOW ENERGY CONSUMPTION
Title (de)
SELBSTGEREGELTE ALARMVORRICHTUNG MIT GERINGEM ENERGIEVERBRAUCH
Title (fr)
DISPOSITIF D'ALARME AUTOREGULE A TRES FAIBLE CONSOMMATION D'ENERGIE
Publication
Application
Priority
- FR 0101541 W 20010518
- FR 0006360 A 20000518
Abstract (en)
[origin: WO0188870A1] The invention concerns an acoustic pressure sensor (10) delivering an analog signal to first amplifying means (12) and to second amplifying means (14), a first comparator (34) whereof the input + is connected to the output of the second amplifying means and whereof the output delivers a warning signal to alarm means (26, 28) when there is a break-in or an attempt at breaking in, and self-adjusting means comprising a microprocessor (26) programmed to deliver a digital signal at the input - of said first comparator whereof the pulses have a variable width which increases in accordance with the duration and the importance of said atmospheric disturbance so as to automatically increase the alarm device triggering threshold and hence reduce its sensitivity when the acoustic sensor detects an atmospheric disturbance such as wind.
IPC 1-7
IPC 8 full level
G08B 13/16 (2006.01); G08B 29/24 (2006.01); G08B 29/18 (2006.01)
CPC (source: EP)
G08B 13/1681 (2013.01); G08B 29/24 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0188870 A1 20011122; AT E275279 T1 20040915; AU 6246401 A 20011126; CA 2407117 A1 20011122; DE 60105289 D1 20041007; DE 60105289 T2 20050901; EP 1287508 A1 20030305; EP 1287508 B1 20040901; ES 2228868 T3 20050416; FR 2809215 A1 20011123; FR 2809215 B1 20040910; PT 1287508 E 20050131
DOCDB simple family (application)
FR 0101541 W 20010518; AT 01936588 T 20010518; AU 6246401 A 20010518; CA 2407117 A 20010518; DE 60105289 T 20010518; EP 01936588 A 20010518; ES 01936588 T 20010518; FR 0006360 A 20000518; PT 01936588 T 20010518