UAV flight control system based on Android mobile phone and external sensor

Abstract

The present invention discloses a UAV flight control system based on an Android mobile phone and an external sensor. The system comprises a smart mobile phone with an Android operating system, a sensing servo controller and an aircraft execution mechanism. The smart mobile phone with the Android operating system is internally equipped with a flight control program. The smart mobile phone is internally provided with a gyroscope, an accelerometer, a GPS and a magnetic field sensor. Through combining the internal sensor in the smart mobile phone and an external assisted sensor provided by the sensing servo controller, the accurate attitude and position information of an aircraft are calculated, the flight control program in the smart mobile phone carries out computing to obtain a preliminary control command, the preliminary control command is sent to the sensing servo controller for further processing, thus the aircraft execution mechanism is driven, and the stable control of the aircraft is realized. According to the system, the pictures and videos taken by the camera of the mobile phone can be called and can be remotely transmitted in real time through a 3G, 4G or WiFi network. The system has the advantages of simple operation and good stability and is suitable for large scale popularization and use.

Description

technical field [0001] The invention belongs to the field of unmanned aerial vehicle flight control, and relates to an unmanned aerial vehicle flight control system based on an Android mobile phone and external sensors. Background technique [0002] The UAV flight control system needs to be equipped with various sensors such as accelerometer, gyroscope, barometer, GPS, magnetometer, etc., so as to sense the motion state of the aircraft and realize the stable control of the aircraft. At present, the flight control system scheme based on smart phones uses the sensors and computing units carried by mobile phones to realize the navigation and control functions of unmanned aerial vehicles. However, the sensors carried by smartphones are limited by cost and usage, and often lack one or more sensors required by the UAV flight control system; even if a certain sensor is equipped, its sensing accuracy or sampling frequency is often low , so the control effect of the flight control s...

AI Technical Summary

Problems solved by technology

However, the sensors carried by smartphones are limited by cost and usage, and often lack one or more sensors required by the UAV flight control system; even if a certain sensor is equipped, its sensing accuracy or sampling frequency is often low , so the control effect of the flight control system based entirely on the smartphone's own sensors is poor

In addition, starting or closing the camera task of the Android operating system will consume a lot of system resources, which will cause a sharp drop in the sensor sampling frequency, cause the aircraft attitude to shake violently, and even cause a crash in extreme cases

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