FIRE ALARM.pptx
- 1. FIRE ALARM
- 2. AIM: To proof and explain fire alarm using IR LED Sensor.
- 3. OBJECTIVE: Fire alarm are used in the event of a fire or fire drill.They are activated automatically. Fire Alarm Circuits and Sensors are a part of the security systems which help in detecting or preventing damage.
- 4. COMPONENTS REQUIRED: BC547 TRANSISTOR (NPN) IR LED 220 Ohm Resistor LED 5mm DC Buzzer 5 Volt DC supply or 9 volt Battery Breadboard
- 6. It there is any fire the IR LED sensor is infared radiation emitted from the fire and gives a positive pulse to the Base of the BC547 (NPN) transistor. Then the transistor turns on and current can flow from COLLECTOR to EMITTER. When the transistor turns on the DC Buzzer and LED connected with the COLLECTOR of the transistor also turns on. Thus we can detect any fire nearby. WORKING PRINCIPLE:
- 8. FIRST REAL APPLICATIONS: Smoke detectors are usually housed in plastic enclosures, typically shaped like a disk about 150 millimetres (6 in) in diameter and 25 millimetres (1 in) thick, but shape and size vary. Smoke can be detected either optically (photoelectric) or by physical process (ionization). Smoke detecters
- 10. SECOND REAL APPLICATIONS: CO is a colorless, tasteless and odorless gas produced by incomplete combustion of carbon-containing materials. It is often referred to as the "silent killer" because it is virtually undetectable by humans. In a study by Underwriters Laboratories, "Sixty percent of Americans could not identify any potential Carbon monoxide Detecters:
- 12. Wireless technology in fire alarm: Most advanced fire alarm systems use wireless technology and smart devices to protect and manage automated buildings from a remote control panel, typically a mobile app that can be downloaded, installed and managed from a smartphone. THIRD REAL LIFE APPLICATIONS:
- 14. ADVANTAGES: Early detection can enable you to avoid serious damage or destruction, so it is of extreme importance. In addition to providing security in the kitchen, bathroom, bedrooms, and family rooms, a fire alarm can quickly alert firefighters so they can help minimize the damage.
- 15. DISADVANTAGES: Very sensitive, which can lead to false alarms as a product of cooking. Not as responsive to smoldering fires - they are minutes slower than photoelectric sensors in detecting smoke particles from smoldering fires. Use of radioactive material is a concern.
- 16. CONCLUSION: Hence electronic circuits can be designed for the fire based alarms and they provide very high efficiency and can be used for the security reasons. Early fire detection is best achieved by the installation and maintenance of fire detection equipment in all rooms and areas of the house or building.
- 17. REFERENCE: https://en.m.wikipedia.org/wiki/Fire_alarm_ system#cite_ref-1 This is the best reference link were can going more knowledge of fire alarm system.
- 18. THANK YOU