Development of a Handheld Gas Detector with IoT Function

Gas detection is very cumbersome because the gas will diffuse and mix with other gases. A handheld gas detector with IoT function using a single-chip controller will be developed in this paper. This detector consists of a variety of different gas sensors. Adaptive fusion method is used to integrate sensing information from different sensors to improve the correctness and gas identification of this detector. Since this gas detection module is hand-held, we use wireless communication interfaces such as Wi-Fi and LoRa with bands at 433/868/915 MHz to enable this gas detector to be able to transmit data while moving. In addition, multiple gas detection modules can be used to form a detection network for large area detection. A built-in algorithm can assist in the correction and isolation of data from modules or sensors in the detection network. Therefore, the gas detecting module can be more flexible in use.