Weilai held a lidar sharing meeting to talk about lidar.
Nio semi-solid-state lidar and Tuduitone joint development, Nio led the circuit design, as well as with the body of the fusion, now know why Weilai fusion lidar, wind resistance coefficient can also do 0.208 bar, this is the benefit of doing together.
Weilai also shortened the loading time of lidar in disguise, you see, when Weilai was developed on January 9, 2021, the bullet screen shouted PPT lidar, remember it. It is said that Weilai has no technology, and as a result, Weilai has a time point for things... Delivered on March 28, 2022 and did it. Together with Tudtong, NIO industrialized the production of lidar from scratch and saw the production line of the lidar factory for the first time.
1, why Weilai's lidar detection distance is long, because it uses the 1550nm band, which is safe for the human eye, so it can support high-power transmission. The 905nm is easily absorbed by the human eye, and in order to comply, it is necessary to limit the power, so the distance is reduced.
As for 1550nm so good, why not everyone uses it. I think that the main problem is the cost, we all know it well, but it is expensive. In the long run, with the maturity of the industrial chain, car companies should gradually use 1550nm.
Weilai has always been like this, giving you the earliest use of the best (most expensive) it can currently find. Just like Orin X, Orin just streamed the film, Weilai went to take it, and returned it to a car to make 4 pieces, so that "OrinX did not mass-produce, Weilai engaged in PPT rumors" was self-defeating. Other car companies, not only the loading speed is not fast enough, at present, it seems that no one is willing to load 4 pieces at a time, Weilai is stupid, so will not spend money than two pieces of car companies are twice as expensive? It's not because there are more needs and more far-reaching plans.
2. What is the use of high lidar angle resolution? Let's take a look at the unique fixed-eye gaze (you can often see the ROI area that car companies say) function. Can be "focused" in a specific range, ultra-high angular resolution, up to 0.06 °.
For example, a 1 meter 8 pedestrian at 200 meters looks at his stable point cloud. And some 0.1 degrees of lidar, look at its point cloud, point cloud more, will be more accurate, but will bring more pressure to the computing power, what does it matter, Weilai prepared a stronger hardware! Wei said that "without a little safety improvement, it is worth going all out."
3, similarly, there is less industry to say, POD detection probability. A bit like a standard target has 9 points, your radar to see, how many points to depict this target, POD engaged in course better.
4, of course, this time for the lidar dirty how to do also respond positively. The official gave a picture, when the camera is so dirty, the basic imaging has been unable to see, the lidar can still be used, if it is dirty, the car will prompt performance limitations. Weilai also prepared a "cleaning suit", aha, I guess if you don't wash the car for a few months, lidar may really need to be wiped, there are wood people to try...
5, reliability: this lidar impact resistance characteristics reached 50G, friends, I did not hit more 0, not 5G is 50G, you bumpy bumps, will not affect the rotor at all....temperature test, -40 degrees cold to 85 degrees Celsius heat, can be. Strong light, rain and fog, dust test also have, this is called the car regulation level....
