With the continuous development of the agricultural drone and precise agriculture, more and more advanced technologies are required for drone spraying.
1. Battery technology
Duration is currently a major obstacle to the development of unmanned aerial vehicles, multi-rotors usually work for 20min, this obviously affect the spraying efficiency and continuation. If we can enhance the battery power density or decrease the drone power consumption greatly, we can surely get a higher efficient spraying work.
The current development directions are: 1. improving the unit power density of the battery 2. Develop wireless charging technology 3. More using of solar energy.
2. Navigation technology
2.1. Positioning technology
The GPS positioning signal is susceptible interference, so we need to try multi-information source positioning, RTK, TV, radio, Wi-Fi and other technology, such as RTK-based UAV positioning system Can be obtained through real-time navigation satellite signals and RTK differential positioning information for UAV flight operations to provide high-precision positioning support. So this will surely promote the routine-based drone spraying result and widen the applications of the drones.
2.2. Obstacle avoidance technology
In order to improve the hover accuracy, achieve a stable environment and realizing the function of stable flight, Obstacle avoidance technology is required; it can help to secure the safe flight and avoid the possible damage and disaster.
3. Communication technology
UAV communication technology are always focusing on how to field complex conditions UAV security and keeping communication stability, security and convenience, it is a key point in UAV area.
In somewhere with weak wireless signal and complex terrain, some RTK assisted technology is used to help enhance the positioning which can improve the spraying efficiency.
4. Flight control technology
Flight control module is the brain of UAVs, but also it is the most critical part of the whole, at present, the integration of flight control needs mainly concentrated in the agricultural plant protection and security and inspection areas. As we know, agricultural unmanned aircraft work on fields and the working environment varies sharply. It is the main direction of the development of flight control technology. To keep the d smooth flight, achieve a smooth benchmark operation and constantly upgrade the quality of products.
5. Pesticide Technology
Unmanned aerial spray technology characteristics require pesticide with a high concentration, and adding sedimentation agents and corrosion inhibitors, the current market of aviation pesticide varieties and categories or inadequate, the need for pesticide companies and pesticide spraying enterprises to do further research and development.
6. Large data combined with intelligent flow meter and nozzle technology
UAV development history is not very long, but in the field of pesticide spraying has been rapid development, the current Japan, the United States and other developed countries unmanned aerial machine spraying pesticide penetration rate is high, but with environmental protection and precision spraying requirements Of the continuous improvement, the urgent need for intelligent flow control, flow control and efficient spray of the flow management system and durable nozzle program.
At the same time involved in food safety traceable cloud systems and pesticide spray quantitative management objective requirements of pesticide spraying data into the cloud, the large data management, so that all the work data can be traced back, real-time sharing.