DOC-20240711-..dhafnfbfbafnannafnfanfabjrhrhehehehehehegsvsvsbsvsvsvsvsvevbeepptx

Dgkzfizfkzkfzifzfizkfzdkzdkdkzjzudzkfzdkzdkzdkzdizdizi

1. Iot BASED Fire & SMOKE detection system Team members Arpan Das Aritra Chowdhury Mainak Chanda Payel chakroborty Saurav das BCT Odd Semester 2024 B.Tech EE 3 rd Year

2. INTRODUCTION Nowadays, fire is the major cause of death in residents due to lack of automation and emergency alert systems. The main source of fire in residents is due to burning of materials, flammable gases, electric circuits, etc. There is no such low cost fire alert systems or automation available at the homes to provide emergency alerts to the people. Fire Alarm Systems are very common in commercial building and factories, these devices usual contain a cluster of sensors that constantly monitors for any flame, gas or fire in the building and triggers an alarm if it detects any of these.

3. WHAT IS IOT? Over the past few years, IoT has become one of the most important technologies of the 21st century. Now that we can connect everyday objects—kitchen appliances, cars, thermostats, baby monitors—to the internet via embedded devices, seamless communication is possible between people, processes, and things The Internet of Things (IoT) is the network of physical objects- devices, vehicles, buildings and other items embedded with electronics, software, sensors, and network connectivity-that enables these objects to collect and exchange data.

4. OBJECTIVE This project will send an alert whenever it detects fire and smoke It has also connected with a buzzer and an LED which will act as Audio and visual for indication for alert. So lets quickly start building lot based fire security alarm system using NodeMcu.

5. components Sl. No Required components Quantity 1 ESP8266 NodeMCU 1 2 Flame Sensor 1 3 Smoke Sensor 1 4 5V Buzzer 1 5 LED Any colour 2 6 Breadboard 1 7 Jumper cables As per required

6. ESP8266 NodeMCU is an open source IoT platform It includes firmware which runs on the low cost Wi-Fi enabled ESP8266 Wi-Fi SoC from Espressif Systems, and hardware which is based on the ESP-12 module. It has GPIO, SPI, I2C, ADC, PWM AND UART pins for communication and controlling other peripherals attached to it. On board NodeMCU has CP2102 IC which provides USB to TTL functionality. In this IoT Fire Alarm, we are using two GPIO pin to get the digital data from the flame sensor and gas sensor. NodeMCU

7. LM393 comparator chip Detection Range: 760 nm to 1100 nm Operating Voltage: 3.3 V to 5 V Maximum Output Current: 15 mA Digital Outputs: 0 and 1 Detection Angle: about 60 degrees Adjustable sensitivity via potentiometer LED lights indicators: power (red) and digital switching output (green) FLAME SENSOR

8. Operating Voltage is +5V Can be used to Measure or detect LPG, Alcohol, Propane, Hydrogen, CO and even methane Analog output voltage: 0V to 5V Digital Output Voltage : 0V or 5V (TTL Logic) Preheat duration 20 seconds Can be used as a Digital or analog sensor The Sensitivity of Digital pin can be varied using the potentiometer SMOKE SENSOR

9. Connections

10. Applications 1. RESIDENTIAL HOMES : Early detection of gas leaks and smoke in kitchens and living areas. Automated alerts to homeowners via mobile apps or SMS. 2. COMMERCIAL BUILDINGS : Monitoring office spaces, malls, and restaurants for potential fire hazards. Immediate notifications to building management and security personnel. 3 . FACTORIES : Detecting gas leaks and smoke in factories, warehouses, and chemical plants. 4 . HEALTHCARE FACILITIES : Ensuring the safety of patients and staff by monitoring gas lines and smoke in hospitals and clinics

11. Future Enhancements Add voice alert features to inform occupants of specific locations of detected hazards. provide verbal warnings and instructions during an emergency. Add additional sensors, such as temperature, humidity, and carbon monoxide detectors, for a more comprehensive safety system. Connect the system with local fire departments and emergency services to provide them with real-time alerts and data

12. Conclusion A fire alarm is a device that detects the presence of fire and atmospheric changes relating to smoke. The fire alarm operates to alert people to evacuate a location in which a fire or smoke accumulation is present. When functioning properly, a fire alarm will sound to notify people of an immediate fire emergency. This distinct sound exists to allow the notification to be heard The fire alarm constructed by this project work is reliable at low cost.

13. ReferenceS