The sensor fusion: it will improve the safety of Cadillac models
The all-new Cadillac XTS 2013, the car of the most advanced series ever offered by the luxury brand, introduced a system of active safety and driver assistance, an important step towards the development of a vehicle without a driver.
Markets this fall in the XTS, the support group for the driver is the first system of its kind offered by General Motors to use sensor fusion, which allows the integration of a wide range of technologies for the detection and positioning can alert the driver of road hazards and help avoid a collision.
The system uses a radar, cameras and ultrasonic sensors has to offer advanced security features, including:
Automatic braking back
Adaptive cruise control has all the regimes
Aintelligente Brake Assist
Alert frontal collision
Siege safety alert
System has an automatic collision preparation
Lane departure warning
Obstacle detection system on odds
Rear Cross Traffic Alert
System headlights adaptive forward
Rear view camera with dynamic guide lines
"We believe sensor fusion will enable future active safety systems to manage an increasing number of entries to offer total peripheral detection of risk of collision and the driver assistance functions IMPROVED says Bakhtiar Litkouhi, group leader Laboratory research and development for GM detection systems and control vehicle.
A system that combines the strengths of multiple detection technologies and expertly managed these entries can offer advice, warnings and interventions to help drivers avoid collisions and save lives. "
Sensor fusion is also the basic component to the development of semi-autonomous and fully autonomous vehicles, which are designed to maintain lane position and adapt to traffic. It is expected that the most sophisticated technology for driverless vehicles, which could allow a semi-autonomous and fully autonomous driving will be available towards the end of the decade.
The work of leading GM sensor fusion put his experience with The Boss, a fully autonomous Chevrolet Tahoe designed by GM, the Carnegie Mellon University and other partner companies, and called in honor of the founder research and development of GM, Charles F. "Boss" Kettering. In 2007, the "Boss" has traveled a distance of 100 km (60 miles) in less than six hours in spite of the urban traffic, busy intersections and signals to stop and wins the Urban Challenge 2007 competition organized by DARPA (Defense Advanced Research Projects Agency), the American agency in charge of projects in Defense Advanced Research for.
The development of sensor fusion is also supported by the work of GM on three prototype semi-autonomous electric vehicles EN-V unveiled at Expo 2010 Shanghai. By combining the global positioning system (GPS) technologies for communication between vehicles and detection distance, the EN-V prototype can run with the help of the driver or alone, automatically choosing the fastest route according a routiere information in real time.
Among the technologies that GM is considering developing for future active safety systems is LIDAR technology detection of light that can measure the distance between the vehicle and an object by illuminating, often using pulses a laser. Although LIDAR technology can not replace the driver's vision, it can become another pair of eyes when visibility deteriorates due to adverse weather conditions or at night. When COMBINED radar, cameras and ultrasonic sensors has, LIDAR can be used to avoid collisions.
A more perfect positioning system, which uses a digital mapping and more accurate GPS, should also play an important role in future active safety systems as it helps in locating the vehicle compared to others. Although the effectiveness of GPS may be limited or urban skyscrapers can interfere with satellite signals, the technology is still considered as an asset lorsqu'alliee to other technologies for the detection and positioning.
"No sensor working alone can not provide all the necessary information. This is why many sensors and positioning technologies must work together synergistically and subtlety, declared Litkouhi. This is what will the sensor fusion. "
Source: General Motors
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