The Design And Implementation Method Of The Cruise Early Warning Rotor UAV System

This thesis discusses the design and implementation of the cruise early warning rotor UAV system based on long-range planning.With the development of UAV application technology,the complexity of various emergencies faced by the public security system in the implementation of early warning work has increased.The application of drones in the early warning work of the public security system has gradually become a necessary trend.On this basis,it is particularly necessary to design a UAV early warning system that can carry out unmanned autonomous flight according to the planned route and the specified time during long endurance.However,the current police UAV monitoring system has problems such as the short range of surveillance UAV and only a few functions.At the same time,with the development of the domestic and international situations,the application of GPS positioning system in key sensitive areas in the country has gradually decreased,and the UAV monitoring and early warning system based on domestic Beidou positioning and navigation is also particularly necessary.The system hardware is mainly composed of a 4-axis rotary wing aircraft.The flight control module uses STMicroelectronics STM32F4 series chips to control the flight status of the UAV.The aircraft side data and ground station communication use IPMESHnet company’s AR03 seriesl radio modem.The data transmission station is used for long-distance data transmission,the ground control transmitter uses Fasstest’s 2.4GHz T18 SZ for remote control,and the positioning module uses Novartis’ s OEM7600 integrated positioning board supporting Beidou navigation for geographic information positioning.The system software part mainly develops the aircraft control rate program according to the requirements to control the flight status of the aircraft,loads the UCLinux operating system on the flight control chip,and uses the log management tool crontab of the UCLinux system to accurately time the scheduled take-offs and landings.The software superimposes the real scene and virtual scene of geographic information,and plans the track by optimizing the ant colony algorithm.And realized on the back-end ground station software and remote control equipment,real-time status monitoring of ground information and high-power voice information prompts.In addition,a power monitoring program is designed on the power supply module of the aircraft.In the case of insufficient power,the aircraft can autonomously alarm and choose to return home through a preset location.In order to prevent extreme high-altitude weather conditions,all circuit components of the aircraft are treated with triple protection,and an external insulating shielding case is used to prevent accidents caused by lightning strikes.Firstly,the research background and the purpose and significance of the design are discussed.Then it introduced the application and basic functions of UAVs in public security early warning systems at home and abroad,and proposed a plan for cruise early warning system based on long-range rotor UAV.The system uses high-density lithium batteries to support long-range flight and cruise.By loading the UCLinux operating system on the main control chip,it realizes timed tracking and cruises according to the predetermined purpose.On this basis,other external expansion functions are realized.The use of domestically-made navigation modules for positioning has achieved the goal of localization of UAV early warning cruise in important departments.