Sistema de alarma y apagado automático de un motor como respuesta a la detección de monóxido de carbono en niveles nocivos para la salud humana en el habitáculo de un vehículo

Abstract

The objective of this project is the development of an electronic alarm system and automatic shutdown of a combustion engine, as a response to the detection of harmful levels of carbon monoxide (CO) inside the passenger compartment of a vehicle using through the integration of sensors and actuators connected to an Arduino UNO board. The detection and shutdown system was tested in a prototype of the passenger compartment of a light vehicle built with Plexiglas, into which a Honda GX 35 engine was integrated, which will be in charge of emitting Carbon Monoxide (CO). For the detection of said gas, an MQ7 sensor will be used and the Arduino UNO card itself will be programmed, which will be in charge of issuing a warning signal when the amount of polluting gas reaches levels that are harmful to the health of passengers. From this, the system will issue an alarm and immediately shut down the engine by interrupting the current with an electrical relay. The carbon monoxide concentration values will be established by national and international regulations and will be obtained from the measurements of the MQ7 sensor and the Arduino UNO card that will be placed inside the simulated passenger compartment of a vehicle. To verify its operation, tests will be carried out to detect levels of carbon monoxide and shutdown tests using the power cut of the Honda GX35 engine. The development of this project will allow the generation of a prototype that will serve as an alternative to be implemented in vehicles to prevent the involuntary inhalation of carbon monoxide (CO) at highly concentrated levels due to failures of the combustion engines or the air conditioning system. constituting also an instrument of study and practice for the students of the Automotive Engineering Career on the damages and consequences of the indicated systems.