EP 2244235 B1 20140813 - Method for self-calibrating an alarm siren module for a vehicle
Title (en)
Method for self-calibrating an alarm siren module for a vehicle
Title (de)
Selbstregulierungsverfahren eines Alarmsirenenmoduls für Kraftfahrzeug
Title (fr)
Procédé d'autocalibration d'un module de sirène d'alarme pour véhicule
Publication
Application
Priority
EP 09158403 A 20090421
Abstract (en)
[origin: EP2244235A1] The method involves controlling instantaneous frequency of an electric control signal, and measuring electric parameters generated at level of a transducer. Extremum or measured parameters in predefined range of frequency values are detected to determine resonant frequency in siren for value ranges. Control parameters of the instantaneous frequency of electric control signal are modified so that the signals has constant frequency signal portion whose instantaneous frequency is equal to resonant frequency in siren or sub-multiple of resonant frequency.
IPC 8 full level
CPC (source: EP)
G08B 3/10 (2013.01)
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 MK MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 09158403 A 20090421