Shulou(Shulou.com)11/24 Report--

Thank you, Mr. Air, a netizen of CTOnews.com, for your clue delivery! CTOnews.com April 14 news, Wesai Technology officially launched the latest car gauge class ultra-thin long-range lidar ET25 for the ADAS pre-loading production market. It is a highly named lidar product, ET means Extremely Thin, and the 25-mm-tall body is extremely thin.

At the same time, as an in-cabin lidar designed to be placed behind the front windshield, ET25 provides automakers with more possibilities for lidar boarding.

Lidar can provide high-precision three-dimensional sensing for intelligent vehicles, which are effectively complementary and redundant with cameras, and provide higher security. Lidar is the key sensing hardware to support the landing of L2 + and L2 + ADAS applications. The installation of the ET25 at the back of the windshield "unlocks" the overall body design, which does not affect the body wind resistance and makes the acceleration experience more silky.

At the same time, the cabin design allows ET25 to meet dirt, rain and fog and other dirt, without additional cleaning program, only with the help of vehicle wiper can timely clean the radar field of vision, to ensure that the lidar can play a stable and reliable performance in more scenes.

ET25 can realize the unique integrated design in the cabin, and the highlights are as follows:

ET25 is only 25 mm thick, which is nearly half thinner than AT128, but its performance is more powerful. ET25's FOV is 120o (H) x 25 °(V), ranging up to 250m without a windshield and 225m behind the windshield (CTOnews.com note: using a special windshield with a transmittance of more than 85%, taking the middle area of the radar field of view angle), the point frequency is more than 3 million per second, and the minimum resolution is only 0.05o x 0.05o, which can bring ultra-high-definition long-range 3D perception to smart cars.

Hesai uses a new generation of self-developed transceiver chip, and the more advanced laser transceiver module improves the sensitivity of the ET25 receiver chip several times, thus raising the ranging capability of the 905nm lidar to more than 250m for objects with 10% reflectivity, helping smart cars to judge risks and make safer decisions in time when they encounter complex road conditions.

All sensors integrated above the cockpit need to have some space between the windshield and the windshield, called KOZ (Keep Out Zone). The thicker the sensor, the greater the KOZ it needs. For example, the KOZ of a 25 mm thick ET25 is more than half smaller than that of other long-range lidars with a thickness of 45 mm. Because the sensor bracket is placed above the driver, the smaller KOZ takes up less cockpit space and effectively reduces the impact on the driver's field of vision.

The comparison diagram of the ET25 with an altitude of 25 mm and the lidar KOZ with an altitude of 45 mm ET25 has a power of only 12 W and has excellent heat dissipation performance. It can continue to work in the cabin for a long time and maintain high performance even on a very hot summer day. In addition, the selection of sensors with lower energy consumption can also help smart cars save battery costs and battery life costs.

Compared with the temperature of the integrated position in the cabin when the power is 12 W and 20 W, the noise of ET25 in the cabin is less than 25 decibels, which is lower than that in the quiet library, which fully meets the cockpit NVH requirements of luxury electric car brands, and can provide users with a "immersive" quiet driving experience.

In order to integrate lidar into the cabin, there is another necessary "secret weapon", which is the special windshield. On the day of the release of ET25, Wesai officially announced that it had reached a strategic cooperation with Fuyao Group to jointly promote the landing application of ET25 pre-loading mass production program. Fuyao's special front windshield optimizes the infrared transmittance of the lidar characteristic band and solves the industry problem of signal attenuation caused by ordinary glass during lidar operation. This kind of special treated near infrared antireflective glass is used in the lidar KOZ region to meet the performance requirements.

In addition, Fuyao also has the industry-leading multi-function front gear integrated assembly design capability, and has rich experience in design and mass production supply in the automotive glass industry, which can meet the customization requirements of different models. It can not only meet the boarding needs of Hesai ET25, but also realize the perfect integration of cabin radar and existing ADAS system.

In the future, Wesai and Fuyao will combine their respective industrial resources and technological advantages to jointly promote the mass production of lidar installation solutions in the cabin, so as to bring high value-added innovative products and solutions to global users in the field of smart vehicles.

Continue to lead the global vehicle lidar market

ET25, which combines light and thin shape and ultra-high performance, is another innovative breakthrough for the industry after pure solid-state lidar FT120, and it is also another heavyweight product launched by Hesai for the pre-installed mass production market of ADAS.

AT128, the flagship product of Hosai ADAS lidar, has obtained a total of several million lidar production points from 11 automobile manufacturers and technology companies, including ideal, Zidu, Gaohe, Lutes, Changan, SAIC, etc., which have been delivered since July last year and have been loaded into ideal L9, L8 Max, L7 Max, Gaohe Hiphi Z, Lutes Eletre and other models.

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