Advanced driver assistance

  • 18-Jul-2011 09:15 EDT
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Bob Denaro, Vice President, Advanced Driver Assistance Systems, NAVTEQ, wrote this article for AEI’s 100th Anniversary.

At NAVTEQ, we see exciting opportunities for automotive engineers to build new advanced driver assistance systems (ADAS) across a broad spectrum of vehicles. In fact, we envision a future in which every driver benefits from the embedded safety, driver information, and energy efficiency that ADAS applications enable.

To this end, we are working with the automotive industry to facilitate the evolution of practical, digital-map-enhanced ADAS implementations that can be efficiently integrated into all vehicles. One such outcome could be an ADAS-integrated primary instrument cluster, which brings together all the components for map-enhanced ADAS into a single circuit board in a universal passenger compartment location.

The key elements of this concept include a digital map (perhaps even one designed specifically for ADAS functionality rather than navigation), a GPS chip for vehicle positioning, and an application that “looks ahead” for relevant road-attribute changes such as upcoming curves or slopes. This information could then be distributed to relevant subsystems to enable or enhance numerous ADAS applications such as active safety, driver information, powertrain efficiency, and eco-friendly routing.

Currently, an in-dash navigation system is the only source for digital map data for embedded ADAS applications. This limits the opportunity to just those vehicles with standard built-in navigation systems, which are typically inclined toward the luxury vehicle segment. Active safety and efficiency applications need to permeate all vehicle classes, so the availability of a purpose-built “sensor” map that can be efficiently integrated into all vehicles is conceptually and architecturally powerful.

The primary instrument cluster concept we envision offers significant vehicle integration benefits including:

• Design: Integrates electromechanical speedometer, dual LCD displays, digital road maps, and other processors. Digital displays offer flexible options for both secondary gauges and dynamic ADAS visual information.

• Packaging efficiency: Integrates a GPS antenna and receiver with all map-enhanced ADAS components into a common location available in every vehicle. The instrument cluster location is an ideal interior location for mounting the GPS antenna for maximum sky visibility and eliminates a costly coaxial cable from the antenna to the electronics.

• In-vehicle communications: Supports both CAN (controller area network) and Media Bus communications. This allows access to dead-reckoning sensor signals for GPS/DR integration. It also creates the ability to consolidate telematics media and embedded controls communications, enabling the potential for incremental map updates via wireless transmission.

• Driver visibility: Locating time-urgent visual cues and alerts in the instrument cluster puts them within the drivers’ peripheral view, so they can keep their eyes on the road.

• Security: Digital map data are stored in a secure location, controlled by the OEM, and cannot be manipulated or corrupted.

Based on NAVTEQ’s extensive involvement with all aspects of the ADAS ecosystem, we believe this novel concept could be an important, cost-effective way to bring enhanced safety and fuel economy to every vehicle on the road.

Bob Denaro, Vice President, Advanced Driver Assistance Systems, NAVTEQ, wrote this article in celebration of SAE's centennial.

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