FIELD: fire alarm systems.
SUBSTANCE: device has photo-detector with RC circuit with length of charge/discharge cycle dependent on light flow of light pulse source, and controller for determining smoke level or dust level on basis of length of photo-detector discharge. Current device can be used to find suspended particles of dust, fog, etc. in surrounding environment.
EFFECT: broader functional capabilities, higher efficiency.
5 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SMOKE DETECTION METHOD | 2003 |
|
RU2256230C2 |
| SMOKE ALARM | 2006 |
|
RU2321071C1 |
| DEVICE TO DETECT DUST DEPOSIT ON PRINTED CIRCUIT BOARDS OF RADIO ELECTRONICS EQUIPMENT | 2012 |
|
RU2503952C1 |
| SMOKE ALARM | 2013 |
|
RU2559729C2 |
| OPTICOELECTRON DEVICE FOR MEASURING CONCENTRATION OF SOLID PARTICLES IN STACK GASES | 1997 |
|
RU2133462C1 |
| METHOD OF DUST DETECTION ON ELECTRONIC HARDWARE PCBS | 2009 |
|
RU2426982C2 |
| METHOD FOR MEASURING CAPACITANCE | 2022 |
|
RU2800808C1 |
| SMOKE FIRE DETECTOR | 2004 |
|
RU2273887C1 |
| 0 |
|
SU439006A1 | |
| SMOKE FIRE DETECTOR | 2004 |
|
RU2273886C1 |
