Design of IoT Based Multiple Hazards Detection and Alarming System

Gas leakage and fire explosion are the major problems in the industrial like a chemical warehouse, LPG gas cylinder storage, and combustible material storehouse also in the residential zone. Sometimes abnormal temperature and humidity variation may cause accident in these storehouses of combustible chemicals, liquids and gases. So, the most efficient and preventive procedure is to set up such a device that can detect all these situations which causes fire explosion. This paper proposes a study with a prototype that can detect most of the combustible gas and LPG gas leakage with the help of MQ2 smoke sensor. Also, this project includes a temperature and humidity detecting sensor name DHT11 which is used to observe the unusual change in the level of temperature and humidity. Besides, there is also a barometric pressure sensor to detect the atmospheric pressure of the warehouses. When any fire or hazard occurs, the pressure of this enclosed area will be changed significantly that can be detected by barometric pressure sensor. All those sensors data are sent to the Adafruit IoT platform website dashboard monitored by the respective authority with the help of NodeMCU, WIFI development board. The whole system is run by rechargeable battery. Thus, the project goal is achieved.