FIELD: burglar alarm signaling by destructing vitrified structure. SUBSTANCE: device functions to detect audio-frequency signals in guarded space typical of above-mentioned intervention method while processing signal characteristics, such as amplitude, envelope shape, length, spectrum structure to identify alarm situation. EFFECT: improved noise immunity due to using additional information characteristics of analyzed audio signal while maintaining high detecting ability of alarm. 3 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| ALARM SYSTEM | 1995 |
|
RU2088973C1 |
| BURGLAR ALARM | 1995 |
|
RU2090934C1 |
| ALARM SIGNAL SYSTEM | 1992 |
|
RU2051417C1 |
| DEVICE FOR FIRE ALARM | 1989 |
|
RU2034335C1 |
| METHOD FOR SECURITY ALARM | 1991 |
|
RU2078376C1 |
| METHOD FOR SECURITY ALARM | 1992 |
|
RU2078377C1 |
| FIRE SIGNALLING DEVICE | 1989 |
|
RU2024062C1 |
| ALARM SECURITY DEVICE | 1999 |
|
RU2150750C1 |
| ALARM SYSTEM | 0 |
|
SU928384A1 |
| FIRE ANNUNCIATOR | 0 |
|
SU1059595A1 |
