| With the continuous acceleration of the modernization process,the number of national automobiles and the length of expressway open to traffic are increasing,and the accident rate on the expressway is also increasing.In addition,the closure of the expressway and the randomness of traffic accidents make the existing vehicle violation detection methods more prominent.Therefore,how to improve the efficiency of traffic violation detection and reduce the accident rate on the expressway is an urgent problem to be solved in the field of intelligent transportation.In this paper,a four-rotor uav platform is designed to improve the detection efficiency of expressway vehicles.The four-rotor uav platform equipped with violation detection equipment for vehicle violation detection can not only improve the flexibility of violation detection,but also greatly improve the efficiency of vehicle violation detection.In the design of the four-rotor uav platform,the design requirements are analyzed and the basic structure of the four-rotor uav is studied.In terms of hardware design,it mainly completes the selection of hardware modules and the construction of a four-rotor uav platform.In terms of software design,the basic flight principle,control principle and cruise flight principle of four-rotor uav are mainly studied,and the dynamic model is established.In terms of four rotor unmanned aerial vehicle(uav)platform communication scheme design,first by four rotor unmanned aerial vehicle(uav)and the communication between upper machine to obtain illegal information,and then by studying the interprocess communication mechanism and MAVlink communication protocols,and custom information MAVlink message to implement illegal information transfer between the four rotor unmanned aircraft and ground station;Finally,through the design of obstacle avoidance system to ensure the safety of the four-rotor uav in the flight mission.The design of the four-rotor uav platform is based on the principle of low cost and high practicability. |