FIELD: railway transport.
SUBSTANCE: device comprises receiving-control instrument provided with a generator of alarm signals that is connected with the power supply input of the fire indicator via two-wire power supply circuit. The receiving-control instrument additionally has electronic switch, generator of sampling signals of the fire indicator, frequency divider, and binary counter.
EFFECT: enhanced reliability.
4 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SIGNALING DEVICE FOR FIRE ALARM | 2002 |
|
RU2234737C1 |
| FIRE DETECTOR | 1992 |
|
RU2032225C1 |
| SIGN CORRELATION METER | 0 |
|
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| METHOD FOR MONITORING OF CONDITION AND INTEGRITY OF LOOP CIRCUIT | 2008 |
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| SMOKE ALARM | 2013 |
|
RU2559729C2 |
| FIRE ALARM SYSTEM | 2007 |
|
RU2357292C2 |
| 0 |
|
SU551675A1 | |
| METHOD FOR SECURITY ALARM | 1992 |
|
RU2078377C1 |
| NOISE GENERATOR | 0 |
|
SU1003298A2 |
| SECURITY ALARM DEVICE | 1998 |
|
RU2130201C1 |
