May 11, 2009

GPS Head Up Displays (HUD) Set to Storm the Market

Head up display (HUD) technology is set to be the next significant technology to be integrated into GPS automotive navigators. It will follow text-to-speech for announcing street names, speech recognition systems for control and Bluetooth for hands-free phone calls in improving driving safety. A significant proportion of car crashes (22.7%) can be attributed to driver distraction which includes anything that draws the drivers focus of attention away from the traffic ahead. Any technology which helps reduce the time drivers need to remove their eyes from the road inherently improves safety.


GPS Head Up Displays (HUD)

Unfortunately, current GPS navigators present much information visually requiring the driver to shift their eyes away from the road in front of them while the car is moving. The US National Highway Transportation Safety Administration found that HUDs, which place information closer to the drivers normal line of sight, improve response times by one quarter to a full second. The significance is not that apparent until you consider that this equates to a 25 to 100 ft reduction in available stopping distance at 70 mph.

Although not common, HUD have been with us for a while dating back, in fact, to 1970’s military aerospace applications. HUD automotive applications did not appear until late in the following decade on some General Motors vehicles. They are now more common on luxury models such as BMW, Lexus and Citroen for display of instrument readings and GPS navigation. Telematics Research Group have estimated that by 2011 HUD will be installed in 17% of vehicles sold in the U.S.

Microvision GPS Head Up Displays (HUD)

HUD technology has used a parabolic mirror with an expensive, hot, short lived mercury-based bulb. The development of cheap pico laser projection systems for personal size pico projectors has now pushed forward HUD development with the capability to deliver brighter images, lower power, lower temperature, improved optics and smaller footprint systems. Microvision and Alvis are two companies with such display technologies ready for product integration.

Resources

Display Trends Used in Passenger Cars

The Relative Frequency of Unsafe Driving Acts in Serious Traffic Crashes

Automotive Displays – Microvision



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