Desarrollo de un prototipo para bloqueo, desbloqueo y desaceleración de un vehículo mediante la red GSM/GPRS.

Abstract

In the present research project, a prototype was developed for the blocking, unblocking and deceleration of a vehicle through the general packet radio service network and the global GSM/GPRS mobile communications system aimed at reducing traffic accidents related to driving under the influence of alcohol. For the implementation of the prototype the characteristics of the Arduino platform were considered and the Arduino Mega board was selected as the most suitable for the connection of the elements. In order to measure the concentration of alcohol in the breath of the person at the wheel, an ethanol gas sensor was placed on the prototype. The value obtained through the sensor is sent to the Arduino platform, which in conjunction with signals from the global positioning system (GPS) and GPRS/GSM modules, is responsible for sending or receiving information detected by the sensor and the GPS. If the prototype detects a value greater than or equal to 0.25 grams a liter, it sends a signal to the relay in order to lock the ignition of the vehicle, thus preventing movement. For unblocking, the prototype has a reset programmed after 5 minutes, after which the process starts again. The prototype tests determined an error margin of 0.03 grams a liter, being a negligible value. It is concluded that the prototype worked in the expected way, by the interaction of each component. It is advisable not to expose the prototype to long periods of use and/or environment factors that exceed 3 continuous hours, as this can cause inconsistency in data collection.