In recent years, major car companies are vigorously developing their own autonomous driving technology, which is inseparable from the support of hardware. At this stage, the mass-produced vehicles have achieved L2-level automatic driving, and the most important hardware is millimeter-wave radar, which enables vehicles to perceive the surrounding environment and realize corresponding driving operations.
The working principle of lidar is similar to that of millimeter-wave radar, except that it uses laser as the signal source, and the laser beam emitted by the laser detects the distance, azimuth, height, speed, attitude and other characteristics of the target. Because the wavelength of light is about 654.38+ million times smaller than that of radio, the accuracy and resolution of laser radar are higher than that of ordinary radar.
Although lidar has more advantages, because of its higher technical threshold and higher cost, self-driving cars currently in mass production can only be equipped with millimeter-wave radar.
There used to be 700,000 128 line lidar of Lidar company, and the old customers reduced the price by 500,000, while the domestic players were relatively cheap, but the number of 64-line products was 200,000. This price makes car companies discouraged. Now Livox directly makes the price of lidar less than 10,000 yuan, which is very attractive for self-driving cars. You know, the current market price of 77GHz millimeter wave radar in Chinese mainland is about 7500 yuan.
Judging from the two laser radars that appeared this time, Livox not only has a lower price, but also has stronger performance.
The detection range of horizon horizon is about 260m, and the horizontal field of view (HFOV) is 8 1.7 degrees, which can cover four lanes within the distance of10m and can be used for close-range detection. Only five horizon devices can achieve 360 all-round coverage.
The Livox team has developed a new scanning method called "non-repetitive scanning", which has obvious advantages compared with the traditional repetitive linear scanning method.
Generally speaking, the traditional lidar sensor adopts horizontal scanning mode, and there will be some blind spots. No matter how long the scanning time is, some objects in FOV cannot be detected.
However, in the scanning mode of Livox lidar sensor, the fidelity of the generated image will increase rapidly with time. This unique non-repetitive scanning method can achieve nearly 100% FOV coverage and longer integration time. Livox also stressed that at the same price, similar products on the market today can't achieve such performance.
According to the official introduction of Livox, Horizon can easily cover four lanes away from 10 meter. When the integration time is 0. 1 s, its field of view coverage is equivalent to that of 64-line mechanical lidar. The combination of five horizon sensors can achieve 360 coverage, and the total cost is only 5% of the 64-line mechanical lidar.
Livox Tele- 15 is specially designed for long-distance detection, which has the advantages of compact structure, high precision and high reliability, and greatly expands the real-time ranging range. When the integration time is 0. 1 s, Tele- 15 can scan 99.8% of the circular field of view of 15.
Tele- 15 can detect objects 500 meters away, which is difficult for human eyes or other sensors to achieve. Therefore, the breakthrough performance of Tele- 15 enables the automatic driving system to detect distant objects in advance, which can provide more reaction time even when driving at high speed.
At present, DJI lidar has also listed the first batch of partners. Including the driverless car company AutoX, the self-driving truck Sidi Zhijia, Refraction AI and high-display robots, as well as the digital green space focusing on aerial, ground and mobile laser scanning technology, all began to use DJI lidar.