| Multi-rotor UAV(unmanned aerial vehicle)is flexible,takes off and lands vertically with a broad prospect of application.It can hover,and fly to some places people are difficult to reach.National "thirteen five" policy supports the development of UAVs in disaster prevention and mitigation,integrated transportation and other industries.At present,the efficiency of UAV power system has been closed to its technical limit.Besides,battery voltage and capacity are also limited.Multi-rotor UAV flight time is far from meeting the needs of the industry.To complete a task,engineering staffs need to bring many batteries and almost there is no effective charging measures.In some operations that are harsh or in remote places or long-term,people need to spend a lot of time on the road,but a very short time on data collection.and the operation efficiency is low.Required frequent inspection of the occasion,manual control makes the work process complex,and the cost increases significantly.This paper developed a UAV autonomous task system,which can solve problem such as UAV's short battery life,people on duty and other issues,and achieve UAV 7*24 continuous self-control work,breaking the restrictions on the development of UAV applications.UAV autonomous task system includes UAV sensing system,intelligent landing station system and software system.UAV sensing system consists of UAV platform and task load.Camera and PM2.5 sensors are main task loads.The top of the intelligent landing station is set as the cube of the skylight structure.The intelligent landing station's structure is a cube with skylight.The integration the principle and theory of mechatronics technology,pattern recognition technology and intelligent control helps achieve the sub-millimeter guided landing and fixed,autonomous battery life.Meanwhile,the intelligent landing station can save the UAV safely and monitor the operating environment.he software system realizes the data exchange and control between the UAV and the intelligent landing station.In this paper,the UAV autonomous task system,which breaks the shortcomings of existing technology,is not limited by the terrain.Once installed,it can be used many times.The UAV's automatic life and storage do not need human intervention.So that unattended operations.The main research contents include:1.Break down the operating process task by considering the UAV automatic task system's workflow.According to the principle that subsystems need to be relatively independent,make the whole plan.2.Design UAV autonomous control function,select the appropriate development platform and achieve it.3.Design intelligent landing station appearance structure,internal layout and function composition.4.Study the automatic life function which is the core of the intelligent landing station,which can be further divided into guided landing and automatic battery replacement part.The guided landing process mainly includes real-time accurate identification of UAV and UAV guidance algorithm and mechanical guidance design.Automatic battery replacement,including hardware selection and propose solutions,select the appropriate hardware and controller,and to achieve control functions.5.Design software system communication format,data interface and implementation.The system had been commissioned for a long time,verifying the guided landing and fixed,automatic battery replacement function worded well.The system is reliable and stable,to meet the design requirements,and can achieve UAV 7*24 hours uninterrupted,unattended,automated operations. |
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