Now companies in the field of laser radar are working hard to develop new products and new technologies, and strive to make the laser pointer radar develop towards miniaturization and low cost. Among them, a method that has been tried out is solid-state lidar. Compared with CCD, CMOS has the characteristics of simple information reading, fast output information rate, low power consumption, high integration, and low price. It has been favored by many well-known manufacturers soon after its introduction. And with the development of technology, the gap between CMOS and CCD has been narrowed, and it has gradually developed into the core of the market.
The other image sensor, CIS, is mostly used in scanners, and its depth of field, resolution, and color performance are currently unable to catch up with CCD photosensitive devices. Lidar is one of the most widely used sensors in self-driving cars. It mainly measures the target position, speed and other characteristic quantities by transmitting laser beams to the target object and receiving laser beams reflected from the target object to sense the surrounding environment of the vehicle. , And form a 3D environment map with accuracy of up to centimeter level, and establish a decision basis for the next vehicle manipulation.
Compared with other automotive sensors, the advantages of lidar are its wider detection range and higher detection accuracy. However, the shortcomings of the green laser pointer radar are also obvious: the performance is poor in extreme weather such as rain, snow and fog, the amount of data collected is too large, and it is very expensive. In particular, the lidar wire harness is directly related to the measurement accuracy. The more the wire harness, the more accurate the measurement, but the more expensive it is.