Automation of Gas Valves and Wireless Detection of Gas and Flame in Household Using Arduino Microcontroller

Abstract

During the past decade there has been a significant increase in number of gas leakage incidents on domestic and industrial scale claiming valuable lives and property. Keeping in view the nature of these incidents there is dire need for a mechanism which can minimize the frequency and impact of these incidents. Internet of things IOT has played a vital role in automation of various household equipment’s using the readily available sensors in the market. One such automation device is the Microcontroller Arduino Esp32. which has 30 input points and a built in Wifi Module. Arduino has pre-installed multiple opensource libraries which can be loaded to the simulator as per requirement. The sensors which are connected to this microcontroller are MQ2 Gas Sensor, LM-35 Temperature Sensor, Flame sensor and a 12V solenoid valve is installed with the input gas pipeline. These sensors record the values at normal room temperature and transmits analogue output to the microcontroller which converts these values into digital output using the pre-installed algorithm and sends signal using a specific IP address using the in-built Wi-Fi module. These digital outputs converted by the microcontroller are then checked with the programmed thresholds for each sensor, if the value exceeds the threshold of any sensor the microcontroller sets off an alarm and cuts off the gas supply using a 12V solenoid valve. A user-friendly android application is developed which monitors readings from all the sensors and user can check the status of all sensors anytime. The developed prototype cuts off the gas supply and set off an alarm when the outputs exceed the thresholds values defined in the Algorithm.