Coming soon! Tucki P5 and its lidar are explained in detail.

"whoever uses lidar is a fool", "fool's choice", "using lidar is doomed to failure" and "using lidar is futile" ......

Elon Musk, who has made diss lidar public many times, recently reneged? Recently, Grayson bulut, an American expert in autonomous driving technology, captured a Tesla Model Y in Palm Beach, Florida, which was equipped with a lidar for road testing. Bulut said, "I think 99.9% of them used Lu Minar's lidar technology, and Lu Minar told me that this is their technology."

Subsequently, foreign media reported that Tesla signed a contract with Luminar, a laser radar company, to use laser sensor technology for testing and development. Informed sources also said that as part of the agreement, Luminar sold the lidar sensor used in the Model Y test car to Tesla.

Compared with Musk's "breaking his word", domestic car companies, especially the major new car-making forces, have always been loyal "followers" of lidar. This year (202 1) is called the first year of lidar and the first year of automatic driving. Tucki, Arctic Fox and Weilai all joined the lidar camp.

What is lidar?

At present, family cars on the market only have certain driving assistance functions (such as cruise control, ACC, parking assistance, etc.). ), all through the sensor to perceive the surrounding environment. The hardware of this sensor is mainly camera, millimeter wave radar and ultrasonic radar, which is equivalent to the eyes of this car and can sense the environment.

With the development of automatic driving technology of smart cars, the capabilities of these sensing hardware are limited at present, and more equipment is needed to meet the requirements. Lidar is a very important hardware, which is equivalent to a pair of binoculars for the eyes of this car. The main advantages of this telescope are that it can accurately perceive the three-dimensional information of the surrounding environment, with high detection accuracy and long distance, and can accurately identify the specific outline and distance of obstacles. This is what the "old three" sensor does not have.

If you want to expand the technical principle of lidar, you can talk about it for a whole day, but in fact, you can simply summarize it with junior high school physics knowledge: using the reflection principle of light, the lidar component of a vehicle emits light at the speed of light, and when it meets the reflection of an object, the outline and distance of the object can be known by the location and time of emission.

However, lidar also has some disadvantages: due to its short wavelength, it will be greatly disturbed and even unable to work in bad weather such as rain, fog and sandstorm. In addition, lidar has always had a disadvantage: expensive. Therefore, lidar is not an all-around player, and it is impossible to "single-handedly" in practical application. And the "old three" hardware is a complementary combination, playing teamwork.

Why do you need lidar?

In a word, the advantages of lidar outweigh the disadvantages, so it is favored by everyone. Take the most direct example: MMW radar and camera can't identify static obstacles at high speed because of the limited detection distance of camera and the limitations of MMW radar's own physical characteristics; As a result, AEB (Automatic Emergency Brake) failed. The addition of lidar can solve this problem.

This also proves that these kinds of sensing hardware are integrated and complementary, performing their respective duties and cooperating with each other, rather than who will replace who.

Of course, these functions of lidar have existed since its birth, but why didn't it start mass production until now? The answer is: the cost has dropped. In the past, a mechanical lidar cost hundreds of thousands or even millions of yuan. Now many laser radar suppliers can reduce the cost to below $65,438+$0,000, and the price is still falling.

So, now lidar is on the stage of automobile industry!

The first car of lidar

Tucki P5, which will be launched in the third quarter of this year and delivered in the fourth quarter, is "the world's first mass-produced lidar smart car". This compact pure electric vehicle is equipped with two laser radars, which are located under the left and right headlights of the front.

These two lidar named HAP are from Livox Lanwo brand owned by DJI. HAP is customized for Tucki by Lanwo based on its own Horiz series products, and it is also the first laser radar applied to automobiles by Lanwo. The cost price of HAP is very advantageous, around several thousand RMB.

In addition, the overall performance of HAP is also good. The detection distance of the object with low reflectivity (@ 10%) is 150m, the horizontal field of view can reach 120 degrees, the angular resolution is 0. 16 *0.2, and the point cloud density is equivalent to 144 line lidar. Among them,150m ranging, like Huawei's 96-line lidar, belongs to the mainstream ranging performance level.

This laser radar belongs to the mixed solid-state type, and adopts a prism scanning scheme (biprism) which is rare in the industry. This scheme has more laser emitters, which can achieve higher point cloud density and longer detection distance. In addition, it needs very high reliability technology and high technical content.

Two lidar in Tucki P5 can make it realize urban NGP, which is one order of magnitude higher than the high-speed NGP in Tucki P7.

The XPilot 3.5 software and hardware system of Tucki P5 integrates 13 high-definition cameras, 5 millimeter-wave radars, 12 ultrasonic sensors, 2 lidar ***32 sensors and 1 high-precision positioning unit (GNSS+IMU). Vehicles can assist drivers to perform driving tasks according to navigation routes, and have autonomous traffic capacity at traffic lights. Under urban road conditions, Tucki P5 can overtake independently, follow the car by itself, pass around the island, and automatically adjust the speed limit according to the road conditions on the ground/road.

This can be regarded as L3-level autopilot function. By then, after the city NGP function is launched, Tucki P5 will become the first smart car in China to realize high-level automatic driving assistance in the city.

It's not just lidar.

It is the highlight of Tucki P5 to be equipped with lidar to realize the function of urban NGP, but this car is far more than that, and its intelligent interactive function is also a highlight. In terms of on-board hardware, Tucki P5 is equipped with Qualcomm Snapdragon SA8 155P on-board chips, and its computing power is also the top among the on-board chips at present, and this car has 128GB storage space and 12GB ultra-high memory. Matching the hardware is Xmart OS 3.0, which comes standard in all departments. The software system supports continuous dialogue, semantic interruption, semantic rejection, dual-tone speech recognition and so on. You can even change lanes and overtake by voice operation.

Xmart OS 3.0 system is more powerful than the recently updated version 2.6. Interestingly, this system can also be connected with DJI's unmanned aerial vehicle. P5' s on-board big screen can be used as the controller of DJI UAV, on which the UAV can be easily operated, and even the voice assistant Xiao P can be used to operate the UAV for shooting.

In addition, Tucki P5 has a length of 4808mm and a wheelbase of 2,768 mm. Although it is a compact body, due to the particularity of electric vehicles, it can design spacious rear space. Compared with fuel vehicles, P5 is equivalent to the level of A+ class vehicles, and the rear space is equivalent to that of B-class vehicles.

At present, no more information about the battery and power has been disclosed, but official information shows that the battery life of P5 can reach 600km+, belonging to the first echelon of battery life.

Write it at the end

Autonomous driving is not a temporary craze, but the final form of human car development. We used to think that autonomous driving was a fantasy, but now it is getting closer and closer to us. At present, lidar is a very important problem to realize the advanced autopilot assistance function. As the cost of lidar is getting lower and lower, and the technology is getting more and more advanced, in the future, we can all experience convenient, safe and intelligent driving in family cars with a capacity of more than 65,438+100000, and Tucki P5 will be a starting point.