CMOS-based Monochrome Encoding for Internet of Things-enabled Fire Detection and Alarm System

This study developed a logic circuit that can determine and detect the existence of fires to activate an alarm and fire extinguisher automatically. Application through the use of Arduino, logic gates, and Boolean logic for control was made. The use of Boolean logic for location identification has been emphasized. The logic circuits and their truth tables resulting in the following Boolean expressions: X = C + D and Y = A + B + C + D for fire distinguisher and beeper respectively where A, B, C and D are input sensors and button, and their simplification procedure through Karnaugh mapping, the equivalent complementary metal oxide semiconductor (CMOS) transistor circuits and monochrome encoded stick diagrams are all discussed. For verification, Logisim simulation software was used. Indeed, the developed system through monochrome encoding is highly applicable for on-site fire protection and can be extended to fully appreciation in the form of a microchip.