Low Cost Fire Detection and alarm System using 8051

Fire detection and alarm system is very important to avoid major accidents which are caused due to fire. Fire may cause a big loss or damage to any property, home, company, warehouse, mall, or bazaar. It also causes severe injuries to human lives. And that is the reason fire detection systems are very important in the day today’s life. In the mini project category, we have added a fire detection alarm system using an 8051 microcontroller.

₹ 2,900

Project Code: 1093

Description of the project:

On our website, we have a list of sensor based projects. This is a mini project, in this project basically, we have used a smoke sensor to detect smoke and fire.

In this project, we have used an 89s51 microcontroller and a smoke sensor. For smoke detection, we have used an MQ9 gas sensor which detects carbon monoxide and even LPG, and methane. This sensor is very useful for the detection of gas leakage. If smoke is detected then this sensor gives high output to the comparator. Then comparator gives high pulse output to the microcontroller. Due to the fast response of the sensor, we can take immediate action on it and can stop further damage. With the help of smoke sensors, we can detect fire or smoke.

This project is very useful to warn people about the fire. Fire can cause the death of many. It is also hazardous to the workstation, and home. With this low-cost fire detector mini-project, we can warn people. Fire accidents can occur at any place but it is quite difficult for everyone to install a fire alarm system in their home or shop. In such situations, our low-cost fire detector is very useful. The main advantage of this project is its cost-effectiveness.

Video of the Smoke and fire detector with buzzer indication using Microcontroller

Description in detail:

Gas sensor output is in analog format. This analog voltage can not be given to the 8051 microcontroller since it requires digital input. So we have to either interface analog to digital convertor or comparator between sensor and microcontroller. To reduce the cost and reduce the circuit size, we have chosen to add a comparator to this circuit.

We have also provided a buzzer for alarm indication. If smoke is detected then the buzzer will be turned on. We have also used a 16 by 2 LCD display in this project. It displays the name of the project as well as it displays different messages.

This is one of the important low cost microcontroller based projects. We have used an MQ9 sensor for smoke detection. If the sensor crosses the threshold value then the buzzer will be turned on. LCD displays a message as smoke detected.

This project is very useful in homes, warehouses, banks, malls, and stations to alert people. This helps to avoid major accidents due to fire and smoke.

Project Photographs:

You will get the following documents through email:

1. Project Report in pdf format and in word format ( .doc or .docx )
2. Circuit diagram
3. PCB layout
4. Microcontroller Program in assembly language
5. Hex file of the microcontroller code
6. Datasheets of all the components / ICs used in the project
7. Power point presentation / PPT file

Applications and Advantages:

Applications of Microcontroller based Smoke detection system using an MQ9 sensor with Buzzer indication:

1. This project has a domestic application since it can be used in our home kitchen.
2. Also useful in hotels, restaurants, and college canteens.

Hardware specification :

Various important blocks of the system and Components we used in this project are:

1. Microcontroller (89s51 — 8051 series microcontroller)
2. MQ9 sensor(smoke sensor )
3. Comparator
4. LCD Display
5. Transistor, Crystal, Diodes, Resistance, Capacitors
6. Buzzer
7. Transformer, Voltage regulator, and Power supply

Software specification :

• The microcontroller program is written in Assembly language
• PCB Layout is designed using EAGLE software
• HEX file downloaded in microcontroller using Flash-magic software

Advantages of Low cost Smoke detector with buzzer indication using Microcontroller:

1. The smoke sensor has a Fast response
2. Cost-effective.

Future Development:

1. With a little bit of modification, we can send this data through SMS by adding a GSM module in this project.
2. We can also add an additional temperature sensor for accurate detection.

Block Diagram of the project:

Question and answers about this project:

Question: Can we use Analog to digital convertor in this project?

Answer : Yes, we have another project which is implemented using Analog to digital convertor.