Design And Implementation Of Multi-rotor UAV Hardware Circuit For Power Inspection

Multi-rotor UAV is causing great concern in recent years, you can hear or notice its news no matter at campus or in network, can be seen Quadrotor has quietly entered the people’s lives. Actually, it is mainly due to human’s needs and interests of the UAV has reached an unprecedented height. Which directly promote its express development,its small volume, lightweight and flexibility etc., gain people’s favor; that is to say you can take off in a very small place, achieve stationary, landing and a variety of complex maneuvers, what’s more, people can carry and conduct aerial photography at any time.The development of the quadrotor like splitting bamboo, which likely become popular as smart phones among the public.With fixed frame and simple solid structure offer powerful energy to complete many highly difficult flight actions and execute small load transport services. Compared with the fixed wing aircraft, it can quickly adjust the direction of flight, altitude which have great flexible, environmental adaptability and so on. Its simple structure design greatly reduces the weight of the Quadrotor itself, which makes it being able to carry more load thus improve its payload. With the increase of people’s awareness of UAV it is believed that more occasions will use it; its advantages will inevitably bring great change to the living way of people in the future, which is also an important reason for more and more researchers to join.Due to the power sector require the least inspection time is thirty minutes, we take22000 mAh huge capacity lithium batteries for the rotor power supply to ensure the least endurance time of UAV. During the process of inspection, UAV needs to carry a camera which is equipped with pan tilt whose total quality are about 1.3kg to complete the patrol task, so the minimum design loads must be 1.3kg and maximum load is 1.5 kg, the UAV flight no-load weight is 7.4kg. We take two-level PID control mode, the first(navigation level) to achieve four rotor navigation by using chip STM32F103C8T6. The second(control level) by using the chip STM32F427ZGT6 connecting some motion sensor module,air pressure meter, gyro and three axis magnetic meter module, wireless communication module, GPS navigation module etc., to realize data acquisition, storage and operation.What’s more, with steering gears and rack, we design and make four axis aircraft to achieve the inspection work of overhead power lines by carrying a camera in UAV.