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New wireless pedestrian detection technology moves cars closer to “computer on wheels”

General Motors is developing a driver assistance feature potentially capable of detecting pedestrians and bicyclists on congested streets or in poor visibility conditions.

It’s just one example of many emerging technologies changing our perceptions of cars and how we manufacture increasingly complex automotive parts.

The feature relies on Wi-Fi Direct, the peer-to-peer wireless standard that allows devices like some smartphones to communicate directly with each other rather than through a shared access point like a cell phone tower. GM researchers have determined Wi-Fi Direct can be integrated with other sensor-based object detection and driver alert systems already available on production vehicles to help detect pedestrians and bicyclists carrying smartphones equipped with Wi-Fi Direct.

The automaker also is looking to develop a complementary app for Wi-Fi Direct-capable smartphones that can be downloaded by frequent road users such as “bike messenger” or “construction worker” that will help Wi-Fi Direct-equipped vehicles identify them.

Wireless pedestrian detection is part of GM’s ongoing development of vehicle-to-infrastructure (V2I) and vehicle-to-vehicle (V2V) communication systems that could provide advance warning about hazards such as slowed or stalled vehicles, slippery roads or intersections and stop signs.

“This new wireless capability could warn drivers about pedestrians who might be stepping into the roadway from behind a parked vehicle, or bicyclists who are riding in the car’s blind spot,” says Nady Boules, GM Global R&D director of the Electrical and Control Systems Research Lab. “Wi-Fi Direct has the potential to become an integral part of the comprehensive driver assistance systems we offer on many of our Chevrolet, Cadillac, Buick and GMC vehicles.”

By eliminating the intermediate step required to reach a cell phone tower, Wi-Fi Direct allows devices to connect in approximately one second compared to conventional wireless systems that typically need seven or eight seconds to acquire location information and connect.

“Wi-Fi Direct’s fast connections offer a distinct advantage in vehicle applications,” said Donald Grimm, GM Global R&D senior researcher of perception and vehicle control systems. “The quicker a vehicle can detect other Wi-Fi Direct users, the greater the potential for collision avoidance.”

The Wi-Fi Alliance, the global industry association in charge of certifying wireless standards, claims Wi-Fi Direct devices can reach each other at a maximum distance of 656 feet or more than two football fields away. In addition to aiding pedestrian detection, this range could enable secure transfers of files such as MP3s or digital address book information between a home computer and the user’s Wi-Fi Direct-equipped vehicle infotainment or navigation system.

“As we move toward becoming a more connected society, having a self-aware connected car will be increasingly important,” said Thilo Koslowski, vice president of automotive industry analysis at Gartner Inc., a leading information technology research and advisory company. “Not only can Wi-Fi Direct help vehicles seamlessly communicate with other consumer devices, it can also augment vehicle-to-infrastructure communications as well, which could lead to better traffic management and fewer accidents.”

GM Canada

 

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