Dajiang drone technology reveals: leather is not blown out (Figure)
"In the future, we have to do more fine and more precise, that is, to turn 99% into 99.9%, this is the craftsman spirit." - Wang Fan, Vice President of Innovation, DJI In the nearly two hours of dialogue, this is the most profound sentence that Wang Fan impressed me. Dajiang still retains its gene-focused genes, down-to-earth attitude and the pursuit of ultimate belief. Dajiang Elf 4 How is the craftsman spirit reflected in the products of Dajiang? Wang Fan: "We are most proud of the precision hovering technology under complex conditions indoors and outdoors." "Hovering" is the most basic capability of multi-rotor drones , three-dimensional position, three-dimensional angle, three-dimensional speed, three-dimensional acceleration, three-dimensional angular velocity. These fifteen states that need to be measured are all stable for multi-rotor drones. Important role. The controller adjusts the flight attitude through a series of "cascade control": the known three-dimensional position is always locked in the hovering position, where the control amount is the hovering speed of a target, and the target hover when the aircraft is in the hovering position The speed is 0; when the aircraft deviates from the hovering position, the target hovering speed is not 0, and the direction tends to hover. DJI's integrated navigation technology combines the advantages and disadvantages of GPS, inertial measurement components, geomagnetic compass and barometer. By processing electronic signals and merging the measured values ​​of various sensors, it is possible to obtain more accurate measurements of fifteen state quantities of the aircraft. Wang Fan: "The Active Track function of Dajiang Elf 4, also known as smart follow-up, truly realizes visual tracking through image recognition and machine learning." Dajiang realized a visual odometer composed of a binocular stereo vision system and inertial measurement components on the Elf 4, which is a very complex visual perception system, which not only needs to launch the plane motion of the object in the field of view through the image, but also Reverse the three-dimensional position of these objects and make multiple optimization calculations based on the three-dimensional position of these objects. However, it is easier to implement a binocular stereo vision system similar to the human eye structure. Since an object appears in the field of view of the left and right cameras at the same time, the left and right fields have parallax, and the parallax can help solve the position of the object, which can be solved only by a simple geometric relationship. This type of technology is very mature. Bottom binocular stereo vision system KNB1-63 Miniature Circuit Breaker
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