Delphi, Mobileye to Supply Active Safety System to Volvo
LAS VEGAS --- Delphi Corp. announced at the International Consumer Electronics Show that it is supplying an active safety system for some new models from a prominent European automaker.
Delphi said it will provide adaptive cruise control and "collision mitigation with automatic braking" technologies for these vehicles. The company showcased its safety system at its exhibit booth during the show.
More details emerged today, when Mobileye announced it was working with Delphi to provide advanced vehicle detection and lane detection technologies to Volvo for use in the 2008 Volvo S80, V70 and XC70. These cars will debut Mobileye's combination of advanced vehicle detection and lane detection technologies, all powered by the Mobileye EyeQ vision system on a chip.
Mobileye technology plays a key role in three of Volvo’s all-new safety and driver-comfort features, including the Volvo Driver Alert Control (DAC) system, Volvo's Lane Departure Warning (LDW) system and the Volvo Collision Warning with Auto Brake (CWAB) system.
The CWAB system has been designed to help avoid or at a minimum mitigate collisions resulting from driver distraction or inattention. CWAB is powered by Mobileye's advanced computer-vision algorithms and Delphi's long range millimeter-wave radar for vehicle detection.
CWAB is the world's first vision-radar fusion system for autonomous emergency braking. For Volvo drivers, this means a new measure of safety during those critical moments when proper braking can avoid or reduce the severity of a collision with a stationary or moving object.
"Volvo's uncompromising safety philosophy matches our own mission of keeping the driver focused, alert and responsive, regardless of concentration levels or distractions," said Amnon Shashua, chairman of Mobileye N.V. and professor of computer science at the Hebrew University of Jerusalem in Israel. "We’re pleased to be part of Volvo's safety solutions and technology team."
Research shows that nearly 80 percent of all road accidents are due to driver inattention within three seconds prior to the accident. In severe accidents, about 85 percent of drivers either did not brake at all or not to the fullest possible deceleration. With the majority of motorists at risk, equipping today’s safest vehicles with vehicle detection technology can play an instrumental role in reducing unnecessary accidents and fatalities.
Mobileye's EyeQ vision system on a chip is a powerful processor that analyzes the video stream from a Complementary Metal Oxide Semiconductor (CMOS) camera mounted on the windscreen, looking forward. The EyeQ chip runs Mobileye's advanced vehicle detection algorithms on the received video, and together with Delphi's 77 GHz radar, powers a collision warning system that performs automatic braking in certain emergency situations.
When both vision and radar sensors agree that the situation is critical, the system activates a series of steps to avoid or mitigate the imminent collision. When the system anticipates an imminent collision with a vehicle ahead, it provides an audio-visual forward collision warning (FCW), and also pre-charges the brakes to make the driver's braking more effective. If the driver still doesn't brake, and the system determines that a collision is imminent, the brakes are automatically activated. CWAB is designed to lower the impact speed as much as possible and thereby reduce the risk of injury to the occupants of both vehicles.
Volvo's fusion of the two sensors enables a robust emergency braking decision, and eliminates the disadvantages inherent with pure radar or pure vision sensors, Mobileye said. The vision-radar fusion offers numerous benefits, such as improved availability in various road conditions, including very curvy roads and a wider performance range that enables earlier warnings as well as a longer braking distance in emergency situations.
Additional accident statistics show that 50 percent of all rear-end collisions involve a stationary object, a problem that the Mobileye technology also helps address. Employing vision-based object classification enables CWAB to surpass the abilities of radar-only FCW systems by detecting stationary vehicles, thus covering twice as many collision situations, Mobileye said. The vision-based object classification also enables detection of cut-in/cut-out maneuvers with an increased level of accuracy compared to radar-only systems. Together, the integrated radar/vision approach enables the system to maintain a low rate of false warnings and provide earlier, more accurate alarms in more complicated, real emergency situations.
"Delphi has reached another milestone in the evolution of providing safety systems with the introduction of the new collision detection system," said Beth Schwarting, executive in charge of Delphi's safety product business unit, at the Consumer Electronics Show. "Delphi is helping to take vehicle safety to the next level with these cutting-edge systems."
Delphi said the system uses unique data fusion algorithms that combine the inputs from radar and vision sensors to increase road safety with seamless driver support.
"We are excited to work with vehicle manufacturers to help them implement active safety," said Heiko Rother, product line manager for the Delphi Europe safety product business unit. "Early adoption of these technologies helps make them safety trend-setters."
Adaptive cruise control (ACC) helps drivers maintain speed and following distance in nearly all driving conditions. It also serves as the platform for other safety systems like collision warning and mitigation. Delphi's radar sensor continuously measures the distance to vehicles ahead and automatically adjusts the speed of the vehicle to help maintain a driver-selected "gap" from the vehicle in front of them to enhance safety. The driver activates the cruise control, setting the desired maximum speed -- beginning at 20 mph -- and chooses the minimum time interval to the vehicle ahead.
"Collision warning with auto brake" works in concert with the ACC to help avoid rear-ending other vehicles or helps to minimize their effect. Visual and audible warnings are provided to the driver if the system senses a possible collision as the vehicle approaches another moving or stationary vehicle from the rear. If the risk of a collision increases, despite the warning, brake support is activated and the brake pads move against the discs in anticipation of a hard stop. The brake pressure is also reinforced hydraulically, ensuring effective braking regardless of the pressure applied to the brake pedal. If the system senses that the collision is imminent, auto brake is activated to automatically brake the car, thus further helping to reduce collision forces.
"Lane departure warning" gives drivers an audible warning that they have drifted out of their respective lane. The driver alert system warns the driver through an audible signal of impending collisions.
Delphi first introduced its adaptive cruise control in 1999 and has worked with automakers on the development of active safety systems for several years.