Iot-Based Smart Fire Extinguisher Cabinet With Auto Alert

Tech

ESP32, Arduino IDE, Pressure Sensors, IR Sensors, Load Cells, RFID, GSM/Wi-Fi, Cloud Dashboard

Abstract

The IoT-Based Smart Fire Extinguisher Cabinet is designed to automate the monitoring of critical fire safety equipment in large-scale facilities. Traditional fire extinguishers are often neglected, leading to situations where units are missing or depressurized during emergencies. This system employs an ESP32 microcontroller integrated with pressure sensors to monitor gas levels and IR or weight sensors to detect the presence of the cylinder. An RFID module ensures that only authorized personnel can access the cabinet, while any unauthorized removal triggers an immediate alert. Data is transmitted via Wi-Fi/GSM to a centralized cloud dashboard, providing facility managers with real-time status updates. The outcome is a proactive safety system that ensures fire compliance and reduces the risk of equipment failure during critical fire outbreaks.

Keywords

IoT, ESP32, Fire Safety, Pressure Monitoring, RFID Access Control, Cloud Dashboard, Real-time Alerts, Smart Cabinet, Facility Management, Embedded Systems, Sensor Fusion, Automated Inspection, GSM Module, IR Sensor, Load Cell, Fire Compliance, Remote Monitoring

Project Description

In many industrial and commercial environments, fire extinguishers are installed as per regulation but are rarely inspected consistently. The primary problem is the 'silent failure' of safety equipment—where a canister may leak pressure over time or be removed for unauthorized use, leaving a building vulnerable during a fire. This project aims to eliminate these risks by transforming a passive storage cabinet into an intelligent monitoring node. The objective is to create a system that continuously tracks three critical parameters: the physical presence of the extinguisher, the internal pressure of the agent, and the authorization of the person accessing the unit. Using a combination of weight sensors (Load Cells) and IR sensors, the system detects if the cylinder is missing. A pressure transducer monitors the gauge to ensure the extinguisher is functional. To prevent theft or tampering, an RFID-based locking mechanism is implemented. When a deviation from the norm is detected—such as a sudden drop in pressure or an unauthorized removal—the ESP32 triggers a local buzzer and sends a push notification/email to the administrator via a cloud platform. This approach shifts fire safety from a periodic manual check to a continuous automated surveillance model, significantly enhancing the reliability of emergency response systems and ensuring strict adherence to safety codes in factories, hospitals, and corporate offices.

Project Features

• Real-time pressure monitoring of fire extinguisher cylinders
• Automatic detection of missing units using IR/Weight sensors
• RFID-based authorized access and user logging
• Instant cloud-based alerts for low pressure or tampering
• Local audible alarm (buzzer) for immediate notification
• Centralized dashboard for multi-cabinet monitoring
• Wireless data transmission via ESP32 Wi-Fi/GSM
• Tamper-proof cabinet door sensing
• Low-power standby mode for energy efficiency
• Digital logging of all removal and replacement events

Specifications

• Hardware components: ESP32 Microcontroller, Pressure Transducer, Load Cell with HX711 Amplifier, IR Proximity Sensor, RC522 RFID Module, 5V Buzzer, I2C LCD Display, 5V Relay Module, Power Adapter
• Software components: Arduino IDE, Blynk/Thingspeak Cloud Dashboard, C++ Programming, MQTT Protocol

Report Contents

• Components List (BOM: Bill of Material)
• Block Diagram
• Flow Chart
• Components: Name, Images, Details
• Circuit Diagram
• Problem Statement
• Abstract
• Introduction
• Methodology
• Challenges and Solutions
• Performance Analysis
• Advantages
• Limitation
• Application
• Future Scope
• Conclusion
• Output Images
• Project Deliverables
• Project Hardware
• Project Report
• Project Simulation

Applications

• Industrial factories and warehouses
• Corporate office complexes
• Public hospitals and healthcare centers
• Shopping malls and cinema halls
• Educational institutions and universities
• High-rise residential apartments
• Server rooms and data centers

Advantages

• Eliminates manual inspection errors
• Provides 24/7 real-time equipment surveillance
• Reduces emergency response time by ensuring tool availability
• Prevents unauthorized use or theft of safety equipment
• Centralized management of multiple safety points
• Automatic alerts prevent delayed detection of leaks

Limitations

• Requires constant power supply or battery backup
• Dependence on stable Wi-Fi/GSM connectivity for alerts
• Pressure sensors require periodic calibration
• RFID tags must be managed and distributed to staff

Future Scope

• Integration with building-wide fire alarm systems
• Implementation of AI for predictive maintenance of cylinders
• Adding a camera for visual verification of tampering
• Developing a dedicated mobile app for facility managers
• Using LoRaWAN for long-range communication in huge plants

Conclusion

The IoT-Based Smart Fire Extinguisher Cabinet successfully addresses the critical gap in traditional fire safety management by providing a continuous, automated monitoring solution. By integrating pressure sensing, presence detection, and RFID authentication, the system ensures that fire extinguishers are always available and functional. The transition from manual checklists to a cloud-integrated dashboard reduces human error and ensures immediate corrective action when equipment fails or is misplaced. While the system is dependent on network stability and power, these trade-offs are minimal compared to the safety benefits provided. Ultimately, this project demonstrates how embedded IoT solutions can be applied to industrial safety, potentially saving lives and protecting infrastructure by ensuring that the first line of defense against fire is always ready for action.