electric multi-rotor drone

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Electric Multi-Rotor UAV (Electric Multi-Rotor UAV) Detailed Technical Description**



The electric multi-rotor drone is currently the most widely used type of drone in agricultural plant protection, aerial photography, and inspection. Its core features are flexible hovering, precise Control, easy operation, and battery-powered. It has the advantages of low noise and low maintenance cost.



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##** 1. Basic structure and composition**

The electric multi-rotor drone is mainly composed of the following core components:



###**(1) Flight platform**

- Frame: CARBON FIBER or high-strength composites, combining lightweight and impact resistance.

- **Number of rotors**: Common *-axis (Quadcopter), *-axis (Hexacopter), *-axis (Octocopter), multi-axis design improves redundant safety (stable flight can still be achieved in case of single motor failure).

- Brushless Motor: Brushless motors (such as DJI ***0, T-Motor U8) have a power of *******0W and a speed of up to *********0 RPM.  

- Propeller: High strength nylon or CARBON FIBER material, ****0 inches in diameter, affecting lift and efficiency###   (2) dynamical system

- **Battery (LiPo/LiHV)**:

- High energy density lithium battery (6S ****0mAh), voltage *2.2V, single battery life ****0 minutes.

- Intelligent battery management system (BMS) that supports fast charging (such as DJI TB*0 battery, *0 minutes of charging).

- **Electrical Control (ESC)**: Brushless electronic governor, Control motor speed, supports high refresh rate (e.g., BLHeli_*2).



##***(3) Flight Control and Navigation System**

- Flight controller:

- Main control chip (STM*2/F7), running open-source flight control (e.g. PX4, ArduPilot) or commercial flight control (DJI A3, Extreme Fly SuperX4).

- Integrated IMU (Inertial Measurement Unit), barometer, and magnetometer to ensure stable hovering.

- **Positioning System**:

- GNSS (GPS/GLONASS/Beidou) ****: Standard accuracy **3 meters.

- RTK (Real-time Dynamic Differential Positioning) Centimeter-level positioning (±1cm) for precise spraying or mapping.

- * Obstacle avoidance system**:

- Binocular vision (such as DJI O3 image transmission obstacle avoidance) + millimeter-wave radar (omnidirectional detection).



 (4) Task Payload**

- **Agricultural spraying**: Medicine box (****0L), centrifugal nozzle (mist droplets *****0 microns).

- **Aerial Surveying**: PTZ cameras (e.g., Zenmuse P1 full-frame), multispectral sensors (e.g., MicaSense Altum).

- **Logistics and Transportation**: Cargo hold (***0kg load, such as SF Logistics drones).



##***** (5) Communication and remote control**

- **Remote Control (RC)**: 2. 4GHz/5.8GHz wireless communication, Control distance ***5km (e.g. DJI RC Pro).

- 4G/5G module: BVLOS remote Control, suitable for large-scale operations