Voice Coil Motors, Lidar, drones. As we all know, DJI is a world-famous intelligent manufacturer of unmanned aerial vehicles. Every time it has a new product, it always arouses the intense discussion and wide attention from all walks of life. 

     The same thing happened when Dji presented the "laser-visible light fusion solution" at the 2020 Intergeo German mapping and geographic information exhibition from October 13 to 15,2020. The so-called "laser visible light fusion solution" , that is, in Dji Autonomous Research and development of unmanned aerial vehicles equipped with Lidar and visible camera with geographic information mapping system, its role is to map the surface, generate three-dimensional map. 

    Speaking of Lidar, in recent years, many advanced hardware devices have introduced lidar, such as drones, unmanned vehicles, robots, 3d printing equipment, and so on, and the development and popularization of Lidar systems can not be separated from voice coil motors. Laser radar is to send a laser beam, and then receive the light beam reflected from a distant object, by measuring the travel time of the light beam to get the distance information of a distant object. However, laser beams are very narrow and they do not scatter, so a single lidar pulse can only sense a very small object. For practical use, lidar sensors have to undergo some form of "scanning" . Most lidar sensors are connected to a drive motor that rotates them, and once the laser is synchronized with the motor's motion, we can tell where the laser is pointing and combine the whole image of the environment ahead. Therefore, the field of view of Lidar depends on the angle of rotation of the motor, which has been used to swing voice coil motor. 

     Kunshan's independently developed swing voice coil motor is a rectangular voice coil motor bent to meet the angular swing, this type of motor can provide 120 degrees of swing angle, torque up to 50n. "M. ". The typical applications of the Shimmy voice coil motor are mirror reflection technology of laser, rotary valve, damper and so on. 

     The article was originally written by www.tmmotion.com in Kunshan, China. Please quote the source.