The Design, Simulation, and Construction of an O2, C3H8, and CO2 Gas Detection System Based on the Electrical Response of MgSb2O6 Oxide

In this paper, the prototype of a gas detector based on the electrical response of MgSb2O6 oxide at 400 degrees C and with a concentration of 560 ppm was designed, simulated, and fabricated. This design considers a PIC18F4550 microcontroller and a response time of 3 s for the sensor. It is worth noting that the response system can be reduced in concordance with the mathematical model of the sensor's electrical response. The proposed device is capable of detecting one to three gases: O-2, C3H8, and CO2. The configuration is achieved through three switches. In programming the prototype, factors such as the gas sensor signals, device configuration, corrective gas signals, and indicator signals were carefully considered. The characteristic of the gas detector is an operational temperature of 400 degrees C, which is ideal for industrial processing. This can be configured to detect a single gas or all three of them O-2 ,C3H8 ,and CO2. Each gas type has its corresponding corrective signal and an indicator-led diode. The operation concentration is 560 ppm, the device is scalable, and its programming can be extended to cover industrial networks.