2. معرفی سنسورهای دود و آتش
دانشگاه صنعتی خواجه نصيرالدين طوسی دانشکده مهندسی برق
معرفی سنسورهای دود و آتش
ارائه دهندگان : سوده بهنام
حميده قديانی

3. FIRE DETECTOR FAMILIES
Smoke Detector
FIRE
Residual
Suspension
Gaseous
Thermal Energy
Radiation
Convection
Laminar Flow
Turbulent Flow
Visible
Ultra-Violet
Infra-red
Flame Detector
Heat Detector
Aerosol
Invisible
Conversion Of
Energy
Matter
Conversion Of Energy

4. SMOKE DETECTORS Photoelectric Smoke Detector Ionization Smoke Detector
Smoldering Fire
Flaming Fire

5. PHOTOELECTRIC SMOKE DETECTOR
Smoke free chamber  light beam travels straight through.
photocell
LED
Smoke particles in chamber deflect some light rays.   
LED
photocell

6. SIGNAL CONDITIONING CIRCUIT For Photoelectric Smoke Detector

7. IONIZATION SMOKE DETECTOR
Alpha particles from the americium source ionize air molecules, positive and negative ions create a small and steady current as they migrate to charged plates.
Smoke particles entering the chamber through the screen, attach to the ions and return them to their neutral state. As fewer ions are available to migrate to the plates, the disrupted current triggers the alarm.

8. INTELLIGENT SMOKE DETECTOR
This detector incorporates a microprocessor- controlled air intake fan and filter that allows the unit to be installed in excessively dusty or dirty areas.

9. Instant Response to spark or flame
FLAME DETECTORS
Flame detectors, whether UV or IR, come in several different types:
UV Detectors
IR Detectors
UV-IR Detectors
Instant Response to spark or flame

10. FLAME DETECTOR OPERATION

11. GAS DETECTOR

13. INTELLIGENT FLAME DETECTOR
Microprocessors within this detectors give them the ability to be programmed to look at specific fuel flame spectrums.

14. HEAT DETECTORS
Fixed Temperature
Rate Compensating
Rate of Rise

15. SIGNAL CONDITIONING CIRCUIT FOR HEAT DETECTOR

18. پایان