Unmanned technology is now very mature now, to the current level of technology to see, if the complex urban traffic conditions into a laboratory-specific pattern, the scene has a unified system of vehicles and compliance with the normal pedestrian traffic, Then do not have the steering wheel, the whole car automatically driving the moment can be available. The problem lies in how the car can be Sensor on the reality of the complex traffic conditions well known, how can people like the eyes and brain as flexible. The key is to work with a variety of sensors to solve, they will eventually monitor the data passed to high-precision processors, identify roads, signs and pedestrians, to make acceleration, steering, braking and other decision-making.
In the part of intelligent perception and recognition, the vehicle optical system and the car radar system are the most important to ensure the safety of traffic. At present, the mainstream sensors for the surrounding environment are laser radar, millimeter wave radar and visual sensor. By scanning the laser reflected from an object to determine the distance of the object, you can form a precision of up to centimeters of the 3D environment map, so it plays an important role in ADAS and unmanned system. From the current car laser radar, the mechanical multi-beam laser radar is the mainstream program, but subject to the high price factors have not yet universal. As ADAS function, often through the sensor + processor bundled way, the domestic automotive millimeter-wave radar system chip, the algorithm also mainly rely on imports, the cost is high. Accelerate the development of domestic 77GHZ millimeter-wave radar chip and as soon as possible vehicle applications, will be China's automotive millimeter Suction Control Valve wave radar industry opportunities. Tongji University School of Automotive Professor Bai Jie that, relative to the fierce competition in the camera, the millimeter-wave radar is more innovative, the potential market space is greater, more opportunities.
ADAS application camera as the main sensor is because the camera resolution is higher than other sensors, you can get enough environmental details to help the vehicle for environmental awareness, car camera can describe the appearance and shape of objects, read signs, etc. These features other The sensor can not do it. From the point of view of reducing costs, the camera is one of the powerful candidates for identifying sensors. Of course, the camera is the best choice in all clear cases, but it is influenced by environmental factors and external factors, such as lack of light in the tunnel, weather factors Resulting in narrowing the line of sight. An important tool for collecting image information, some similar road signs recognition, lane line sensing Fuel Rail Pressure Sensor and other intelligent functions from the camera to achieve. At present, the main application of the camera is: monocular camera, rear view camera, stereo camera or binocular camera, look around the camera, visual algorithm in the ADAS technology line essential, millimeter-wave radar and other active sensors rely on a lower degree of algorithm , The algorithm is relatively simple, camera and other passive sensors rely on a higher degree of algorithm.
Of course, in order to improve the accuracy of environmental perception, usually need a variety of sensor combinations, and ultimately provide a stable and durable solution. Now the typical is the millimeter-wave radar, laser radar and car camera, other ultrasonic technology and infrared technology and the integration of these technologies will make the sensor industry to bring a huge market. However, no doubt, in the car to achieve full intelligence in the past few years, the sensor industry chain should be the first to get the benefits. As a core sensor, the low cost solution will accelerate the unmanned arrival. At present, high precision automotive lidar products manufacturers are mainly concentrated in foreign countries, including the United States Velodyne, Quanegy and Germany's IBEO companies. Domestic laser radar products Temperature Sensor are relatively backward, China Aviation Automotive Systems Holdings Limited senior professional Zhou Shining has said that Bosch, the mainland, Valeo, Infineon, Delphi and other foreign parts enterprises have already seized the commanding heights of ADAS technology, especially in Sensor market layout, China's auto parts enterprises have lost at the starting line.