Q-Free develops 5-in-1 vehicle antenna for the CVIS project

CVIS, co-funded by the European Commission and managed by ERTICO-ITS Europe, a multi-sector partnership dedicated to the development and deployment of ITS, has gone live at its first European test site in Helmond, the Netherlands. CVIS technologies and applications developed over the last few years are now moving out of the laboratory and onto the road, including real-life applications using 5.9 GHz wireless LAN and cellular 3G communication media.

Q-Free is providing the communications software and vehicle and roadside antennas for CVIS infrastructure testing. The latest CVIS platform, CVIS 2.0, pictured in the figure above, presented some new challenges for Q-Free’s developers, who had to design a power- and space-efficient rooftop antenna unit containing five individual antennas, listed below:

  • Dedicated short-range communications (DSRC), wireless channels specifically designed for automotive
  • Global Positioning System (GPS)
  • Broadband GSM/UMTS antenna, named CALM 2G/3G
  • Two broadband WLAN antennas, named CALM M5, provide on- and off-road Wi-Fi connections

CVIS is an open platform, meaning board drawings are readily available, and the basic core software and middleware are open and run on Linux. The board supporting the CVIS 2.0 platform is smaller than the prior generation because of the low power and small footprint of the Intel processor and chipset.

CVIS is designed for vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communications based on five in-vehicle radios.As an example, vehicles communicate with each other via a DSRC channel, sharing information on vehicle speed and proximity. Vehicles communicate with the transportation infrastructure, such as gas station and
toll booths, using the infrared link. Drivers can monitor their location using GPS, make phone calls over UMTS and connect to the Internet with CALM M5.

Source: CVIS.

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