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Intelligent induction of radar obstacle avoidance module of plant protection UAV

2022-10-19 567

The intelligent induction solution of the radar obstacle avoidance module of the plant protection UAV has become a demanding UAV in the field of plant protection for agricultural plant protection. It has great advantages in safety and efficiency, reducing labor costs, and ensuring crop yield, but it also encountered some practical difficulties. According to the feedback of some flight defense teams, the environment around the farmland is usually very complex. During the plant protection operation of UAV, due to the collision of high voltage lines, low voltage lines, trees, melon racks and other obstacles, explosion accidents occur frequently. Therefore, for the plant protection UAV radar obstacle avoidance module, imitation tracking (altimeter) and obstacle avoidance are indispensable arms, which directly determine the quality of the operation effect.

Intelligent induction of radar obstacle avoidance module of plant protection UAV

Obstacle avoidance function and test performance were written into the first set of industrial standards. China's agricultural UAV industry standard, Technical Specifications for Quality Evaluation of Plant Protection UAVs, was issued, which put forward clear requirements for the safety of plant protection UAVs. Among them, 7.4.7 obstacle avoidance performance test clause: "Control the plant protection UAV to fly to any obstacle such as electric pole, tree, grass pile at 2m/s, observe whether the plant protection UAV can avoid collision with the obstacle. Control the plant protection UAV to stay away from the obstacle, and determine whether the machine can be re controlled."


For the purpose of quality supervision and inspection, the National Plant Protection Machinery Quality Supervision and Inspection Center interpreted the obstacle avoidance function as follows: "At present, obstacle avoidance is mainly divided into two parts: tree obstacle avoidance and wire obstacle avoidance. In the tree obstacle avoidance test, the UAV is required to fly independently on the scheduled route, and the inspector determines it according to the UAV flight path and actual alarm situation."


The current obstacle avoidance module solutions include radar obstacle avoidance, ultrasonic obstacle avoidance, laser obstacle avoidance and vision. Obstacle avoidance has different defects in detection ability, cost, anti-interference ability, etc., while millimeter wave radar has moderate price, high reliability, anti electromagnetic interference, and can work around the clock well with plant protection UAV. UAV radar obstacle avoidance module supports three target/multiple target detection. Compared with the traditional single target mode, it can provide more abundant obstacle information and help UAVs achieve more obstacle avoidance strategies.


Breakthrough 1: Support omni-directional obstacle avoidance. Customers can flexibly network according to application scenarios, and use 4-6 obstacle avoidance radars to form radar arrays.

Breakthrough 2: Seamless docking with the network port, only three simple flight control step parameter settings are needed, and millimeter wave radar obstacle avoidance module can be quickly used.

Breakthrough 3: Shell material upgrade. After 3 months, 200+pesticides and 10+comparative verification of planting materials, shell materials suitable for plant protection UAVs were screened.


Integrating the new trend of radar security initiative, intelligence, accuracy and intrusion prevention technology, and the challenge of traditional security technology means, the traditional security system technology basically uses vibration sensor, infrared radiation, passive infrared, electronic fence, video monitoring, thermal infrared and other means, which are vulnerable to bad weather, occlusion, and complex environment, highlighting its shortcomings and cannot be widely applied to various core prevention needs. At present, security system is developing towards integration, multi-function and intelligence.


Integrated radar safety system is a set of radar vision integrated early warning products. The radar actively detects the target when it enters the defense area, accurately locates the target's distance, angle and speed, displays the tracking track in real time, and integrates video for target review. The active detection, high sensitivity and video visibility of integrated radar technology greatly improve the detection rate and practicability in complex environments.


Product advantages of radar system:

1. Simultaneous locking of multiple objects and track tracking

When the suspected target enters the radar detection area, the radar can simultaneously lock the target at 10+, and display the moving track of the target in real time on the management platform interface; The system also has very low speed measurement capability, and accurate distance measurement and angle measurement capability.

2. Flexible zone division and different levels of prevention

Users can flexibly set alert areas of different levels according to different scenarios. When someone or a vehicle approaches the alarm area, early warning can be realized in advance, and the linkage camera can track and capture suspicious targets to warn of intrusion.

3. Intelligent Differentiation of Intrusion Target Types

In order to better distinguish different types of targets and virtual alarm targets, a classification method based on machine learning is introduced, and a large amount of data is collected to train the algorithm model, which can effectively distinguish people, cars, trees and other targets.

4. Strong environmental adaptability

The radar is not affected by optical visibility, temperature, bad weather, insect shelter and complex environment, and can work all day in night, fog, snow and other weather.

Adapt to rich scenarios ?: The integrated radar security system can be widely used for the protection of nuclear power, power, oil and other key core areas; Airport, historical sites and other core areas; Prison, justice, government and other key areas.


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