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Sensors 2014, 14(3), 3921-3938; doi:10.3390/s140303921

On the Use of Low-Cost Radar Networks for Collision Warning Systems Aboard Dumpers

ETSI de Telecomunicación. Departamento de Señales, Sistemas y Radiocomunicaciones. Universidad Politécnica de Madrid, Av. Complutense s/n, Madrid 28040, Spain
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Received: 18 December 2013 / Revised: 3 February 2014 / Accepted: 12 February 2014 / Published: 26 February 2014
(This article belongs to the Special Issue State-of-the-Art Sensors Technology in Spain 2013)
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Abstract

The use of dumpers is one of the main causes of accidents in construction sites, many of them with fatal consequences. These kinds of work machines have many blind angles that complicate the driving task due to their large size and volume. To guarantee safety conditions is necessary to use automatic aid systems that can detect and locate the different objects and people in a work area. One promising solution is a radar network based on low-cost radar transceivers aboard the dumper. The complete system is specified to operate with a very low false alarm rate to avoid unnecessary stops of the dumper that reduce its productivity. The main sources of false alarm are the heavy ground clutter, and the interferences between the radars of the network. This article analyses the clutter for LFM signaling and proposes the use of Offset Linear Frequency Modulated Continuous Wave (OLFM-CW) as radar signal. This kind of waveform can be optimized to reject clutter and self-interferences. Jointly, a data fusion chain could be used to reduce the false alarm rate of the complete radar network. A real experiment is shown to demonstrate the feasibility of the proposed system. View Full-Text
Keywords: radar; interference; clutter; network; collision warning; dumper; low-cost radar; interference; clutter; network; collision warning; dumper; low-cost
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

González-Partida, J.-T.; León-Infante, F.; Blázquez-García, R.; Burgos-García, M. On the Use of Low-Cost Radar Networks for Collision Warning Systems Aboard Dumpers. Sensors 2014, 14, 3921-3938.

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