FIELD: physics, signalling.
SUBSTANCE: invention relates to non-electric fire detectors and can be used in explosion hazard zones. The fibre-optic linear fire alarm, consisting of a signalling unit and a detecting element, wherein the signalling unit is in form of a scattered radiation detector, including optically-connected: a pulsed laser light source, a detecting element, a filter unit which separates Stokes and anti-Stokes components, photodiodes which detect corresponding scattering elements, an analogue-to-digital converter, a unit for processing and indicating temperature on the length of the detecting element, wherein the detecting element is a fibre-optic cable.
EFFECT: possibility of constant monitoring of temperature on the entire length of the detecting element, which enables to predict dangerous situations and monitor all potentially hazardous facilities.
2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF DETERMINING TEMPERATURE DISTRIBUTION ALONG FIBRE-OPTIC LINE | 2014 |
|
RU2580151C1 |
| METHOD FOR THERMAL NONDESTRUCTIVE INSPECTION OF THERMAL-TECHNICAL STATE OF LONG, NON-UNIFORM AND HARD-TO-REACH OBJECTS | 2010 |
|
RU2428682C1 |
| FIBRE-OPTIC DEVICE FOR MEASURING TEMPERATURE DISTRIBUTION (VERSIONS) | 2009 |
|
RU2413188C2 |
| APPARATUS FOR MEASURING TEMPERATURE DISTRIBUTION IN HORIZONTAL WELL | 2010 |
|
RU2445590C1 |
| SENSITIVE ELEMENT POLLING DEVICE | 2019 |
|
RU2701182C1 |
| FIBER OPTIC SMOKE AND HEAT CONVECTION FLOW SENSOR | 2023 |
|
RU2805772C1 |
| MONITORING METHOD OF INTER-WELL PARAMETERS (VERSIONS), AND OIL RECOVERY PROCESS CONTROL SYSTEM | 2012 |
|
RU2509888C2 |
| METHOD OF MEASURING TEMPERATURE DISTRIBUTION AND DEVICE FOR REALISING SAID METHOD | 2011 |
|
RU2458325C1 |
| FIBER-OPTICAL DEVICE MEASURING TEMPERATURE DISTRIBUTION | 2003 |
|
RU2221225C1 |
| SYSTEM BASED ON BRILLOUIN SCATTERING WITH MULTIPLE FBG | 2010 |
|
RU2511066C2 |
