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Fire Alarm(STEAM Education)

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To understand the basic principles of fire detection and alarm systems by building a simple fire alarm circuit.

Project : 38


Fire Alarm

 

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Project Aim:

To understand the basic principles of fire detection and alarm systems by building a simple fire alarm circuit.


Components Used:

1.     Power Supply

2.     Thermistor

3.     Transistor NPN

4.     Buzzer

5.     Resistor 100Ω, 220Ω & 1K

6.     Connecting Wires

 

Circuit Diagram:


Connection Procedure:

Thermistor Sensor part:

Step 1: Connect the positive terminal of the Power Supply (Pin 62) to one end of the Thermistor (Pin 49).

Step 2: Connect the other end of the Thermistor (Pin 50) to one end of the 220Ω Resistor (Pin 4).

Step 3: Connect the other end of the 220Ω Resistor (Pin 3) to the negative terminal of the Power Supply (Pin 59).

 

Buzzer Alert part:

Step 4: Connect the positive terminal of the Power Supply (Pin 63) to one end of the 2.2K Resistor (Pin 7).

Step 5: Connect the other end of the 2.2K Resistor (Pin 8) to the positive terminal of the Buzzer (Pin 54).

Step 6: Connect the negative terminal of the Buzzer (Pin 53) to the Collector of the NPN Transistor (Pin 31).

Step 7: Connect the Base of the NPN Transistor (Pin 30) to one end of the 1K Resistor (Pin 6).

Step 8: Connect the other end of the 1K Resistor (Pin 5) to the other end of the Thermistor (Pin 50).

Ensure each connection is secure and follows the specified pin numbers for proper functionality.

 

Explanation:

In this project, we're constructing a fire alarm circuit using common components like a thermistor, transistor, and buzzer. The thermistor serves as the fire sensor, detecting heat. When it senses a rise in temperature, its resistance changes, triggering a voltage that activates the transistor. The transistor acts as a switch, allowing current to flow to the buzzer, which then emits an alarming sound, warning people of the potential fire hazard.


If you want to post your project ,research or any document related to Ai,Ml,IoT,Robotics then please email us with your image ,details and your project at blog@nepatronix.org




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