부산대학교 도서관

The outline and implementation of a low power real-time gas leakage detection and LoRa wireless communication technology-based notification system are accompanied by the multistage safety features in the kitchen as well as in the house have been inaugurated in this paper. The proposed system comprises a LoRa client and a LoRa gateway. LoRa client was made by the RFM69HW LoRa module, Arduino Uno, and some sensing devices, which were installed in the kitchen. Primarily a LoRa gateway was installed in our community. This LoRa gateway was associated with a cloud server (Ubidots) by employing Wi-Fi networks as transmission media. When gas leakage was detected, liquid crystal display (LCD), and the buzzer were activated, thereupon a GPS sensor identified the geographical position of the affected area, and LoRa client stored the measured data to Ubidots IoT platform, afterword data was sent to the user and police station, and eventually, the main power circuit at home was tripped off, and the exhaust fan was activated for avoiding further accidents. Here, for the efficient use of heat from a conventional gas stove in Bangladesh, and subsequently, for the secure power supply to the whole system, power was generated from the unused heat during cooking using the seeback concept of thermoelectric power generation(TEG) module.