Non-automotive manufacturers are eye-catching in research on autonomous vehicles
In terms of self-driving car research, non-automotive manufacturers are eye-catching. Take Google’s self-driving car as an example. In 2010, Google announced in its official blog that it is developing an autonomous driving system. So far, Google has applied for and obtained more For related patents, its driverless car was licensed on the road in 2012, the total driving mileage has exceeded 483,000 kilometers, and the accident rate is almost zero. The core of the external device of Google's self-driving car is the 64-beam laser rangefinder located on the roof of the car, which can provide fine 3D map data within 200 feet. The driverless car will combine the data measured by the laser with a high-resolution map. , Make different types of data models in order to avoid obstacles and follow traffic laws during autonomous driving. The camera installed on the front windshield is used to find obstacles, identify street signs and traffic lights. The GPS module, inertial measurement unit and wheel angle encoder are used to monitor the position of the car and ensure the vehicle's driving route. There are 4 radar sensors (3 in the front and 1 in the rear) installed in the front and rear bumpers of the car to measure the distance between the car and the front (with the front camera). In the process of travel, use the navigation system to enter the route. When the car enters an unknown area or needs to update the map, the car will wirelessly communicate with the Google data center and use sensors to continuously collect map data. It is also stored in the central system, the car The more you drive, the higher the level of intelligence.
The Audi Autopilot system uses two radar probes, eight ultrasonic probes and a wide-angle camera. It can autonomously steer, accelerate and brake at speeds up to 60km/h according to the information provided by the navigation system within a set time. Achieve complete autonomous driving. Vehicles equipped with Audi's autonomous driving system can start and stop freely in crowded cities, and the steering operation is also very flexible. In high-speed driving, you can adjust your speed according to the distance ahead. When a dangerous situation occurs in the front, Audi's autonomous driving model can brake in time.
The IBEO company in Hamburg, Germany developed driverless cars as early as 2007. During driving, the global positioning device installed in the car will always obtain the exact location of the car. The lidar hidden near the headlights and taillights "observe" the road conditions within 200 yards (about 183 meters) around the car at any time, and build a three-dimensional road model through the global positioning system road navigation system. It can recognize various traffic signs and ensure that the car can drive safely under the premise of observing traffic rules. The computer installed in the trunk of the car will summarize and analyze two sets of data, and convey the corresponding driving commands to the car according to the results.
