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Open AccessArticle

Universal Safety Distance Alert Device for Road Vehicles

by Matic Virant 1 and Miha Ambrož 2,*
Plastika Virant d.o.o., SI-1293 Šmarje-Sap, Slovenia
Faculty of Mechanical Engineering, University of Ljubljana, SI-1000 Ljubljana, Slovenia
Author to whom correspondence should be addressed.
Academic Editors: Steven Johnston and Simon J. Cox
Electronics 2016, 5(2), 19;
Received: 25 January 2016 / Revised: 12 April 2016 / Accepted: 26 April 2016 / Published: 29 April 2016
(This article belongs to the Special Issue Raspberry Pi Technology)
Driving with too short of a safety distance is a common problem in road traffic, often with traffic accidents as a consequence. Research has identified a lack of vehicle-mountable devices for alerting the drivers of trailing vehicles about keeping a sufficient safe distance. The principal requirements for such a device were defined. A conceptual study was performed in order to select the components for the integration of the device. Based on the results of this study, a working prototype of a flexible, self-contained device was designed, built and tested. The device is intended to be mounted on the rear of a vehicle. It uses radar as the primary distance sensor, assisted with a GPS receiver for velocity measurement. A Raspberry Pi single-board computer is used for data acquisition and processing. The alerts are shown on an LED-matrix display mounted on the rear of the host vehicle. The device software is written in Python and provides automatic operation without requiring any user intervention. The tests have shown that the device is usable on almost any motor vehicle and performs reliably in simulated and real traffic. The open issues and possibilities for future improvements are presented in the Discussion. View Full-Text
Keywords: safety distance; traffic; vehicle; sensor; radar; Raspberry Pi safety distance; traffic; vehicle; sensor; radar; Raspberry Pi
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MDPI and ACS Style

Virant, M.; Ambrož, M. Universal Safety Distance Alert Device for Road Vehicles. Electronics 2016, 5, 19.

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