Vision-based plant protection unmanned aerial vehicle obstacle avoidance system and obstacle avoidance method thereof

Abstract

The invention discloses a vision-based plant protection unmanned aerial vehicle obstacle avoidance system and an obstacle avoidance method thereof. The system comprises a power supply module, a control module and a sensor measurement module. The power supply module transmits an adjusted output power supply to the control module and the sensor measurement module so as to provide a power source forthe system module, and a frequency signal is stabilized by using the frequency of a crystal oscillator. The control module receives a detection signal fed back by the sensor measurement module so as to control the obtained detection signal and further drive the next module to operate. The sensor measuring module judges and budgets obstacles and the distance between the obstacles in the flying process of the unmanned aerial vehicle according to the sound wave speed and the time interval of transmitting and receiving of the ultrasonic waves in an ultrasonic ranging mode, then judgment is made accurately, and the flight path is adjusted automatically to complete a specified flight task.

Description

technical field [0001] The invention relates to the technical field of obstacle avoidance for drones, in particular to a vision-based plant protection drone obstacle avoidance system and an obstacle avoidance method. Background technique [0002] With the development of UAV technology, UAVs are widely used in various fields of military and civilian use. Autonomous flight control and obstacle avoidance capabilities are the prerequisites for safe flight of UAVs. Therefore, automatic obstacle avoidance has become the automation of UAVs. Or the key to intelligence, and the so-called "automatic obstacle avoidance" of UAV means that when the UAV aircraft encounters obstacles during automatic flight, it will automatically identify them through online measurement, effectively avoid obstacles, and achieve safety. flying system. [0003] The obstacle avoidance acquisition system of the UAV needs to accurately collect the detection sensor data from the UAV, and then after data process...

AI Technical Summary

Problems solved by technology

[0003] The obstacle avoidance acquisition system of the UAV needs to accurately collect the detection sensor data from the UAV, and then after data processing, output information such as attitude angle, yaw angle, altitude, air pressure, position and speed, and the flight control system is based on The received information controls the operation of other modules, so that the UAV can fly according to the desired effect, and then detect the accuracy value of the output information of the sensor system, which indirectly affects the quality of the flight, and thus fails to achieve the expected flight effect. The control chip of the machine is easily disturbed by external noise and other factors, resulting in low accuracy of collected data

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