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Vehicle Locking System Using an Electronic Breathalyzer and Notification by Mobile Communication

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This paper presents the implementation of a prototype to lock/unlock the vehicle ignition system. It involves the adaptation of an opto-isolated relay, which has been equipped with a wireless interface of the MQTT protocol. The relay activation is controlled by an embedded board Raspberry Pi 3; it acts as the main unit of the proposed system. The executed control actions are given depending on the information received by radiofrequency from an implemented electronic breathalyzer. This device evaluates the alcohol level and humidity in the driver’s breath using the MQ-3 and DHT11 sensors. In addition, a mobile communication platform compatible with Android smartphones is provided to inform the enabling/disabling of the vehicle’s ignition system, its geographical location by GPS coordinates and a front facial photograph of the driver. All these features are incorporated by a wireless local network (WiFi) for the elements that make up the prototype. This work also presents the transmission of information to mobile terminals compatible with the Telegram instant messaging system through the UMTS network. In order to validate this proposal, the corresponding tests are carried out and their comparison with a commercial device.

Keywords: Electronic Breathalyzer; Embedded Devices; Mobile Communication; Vehicle Locking System; Wireless LAN

Document Type: Research Article

Affiliations: Facultad de Ingeniería en Tecnologías de la Información, Telecomunicaciones e Industrial, Universidad Técnica de Ambato, Ambato 180103, Ecuador

Publication date: January 1, 2020

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  • Journal of Computational and Theoretical Nanoscience is an international peer-reviewed journal with a wide-ranging coverage, consolidates research activities in all aspects of computational and theoretical nanoscience into a single reference source. This journal offers scientists and engineers peer-reviewed research papers in all aspects of computational and theoretical nanoscience and nanotechnology in chemistry, physics, materials science, engineering and biology to publish original full papers and timely state-of-the-art reviews and short communications encompassing the fundamental and applied research.
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