Diseño, construcción e instalación de un alcoholímetro electrónico con dispositivo de bloqueo de un vehículo.

Abstract

An electronic breathalyzer with blocking device has been designed, constructed and installed in Mazda BT-50 pick-up to protect and avoid that vehicle starts if the driver exceeds the level of alcohol allowed by current traffic laws. Electronic-control unit construction manages the information of the information of the alcohol sensors, processes the gotten information and orders the actuators running to determine the level of alcohol. These sensors were calibrated in according to the function of alcotest brand dragger of thePolicía de Tránsito de Quito. The components of the Breathalyzer are MQ3 sensors, pressure sensors, screen LCD, sound unit, internal components, micros, voltage, resistances and relies. Running breathalyzer parameters were gotten by means of test carried out at Centro de Contraventores de Tránsito de Quito which were used to construct the control unit, placed in a visible spot for the driver. Alcocheck test is allowed to carry out when the vehicle starts or the systems requires it. The tests about the implemented system permitted to compare the variations of it regarding the breathalyzer used at the Policía de Tránsito, so that this system could be implemented in the vehicle and it will be driven if the drivers not exceed 0.3 gr/l of alcohol programmable to different limits. This project is excellent because the people are allowed to drive a vehicle respecting the traffic laws and to reduce the percentages of accidents accurred by drunkenness which has the second place in Ecuador. This system can be carried out in the country generating technology and security to Ecuadorian people.