Development Of Miniature Flight Data Recorder For UAV

Flight data recorder (FDR) is called black box.It can automatically collect all kinds of parameters of planes during flying.It will show the flying information recorded to field equipment so that we can provide objective basis for trouble diagnosis and assistant flight training.The subject of this project is to research and realize a hardware and software system of miniture FDR applied to an Unmanned Aerial Vehicle (UAV) with miniaturization,mass capacity,nonvolatility and low power dissipation.The system can manage the datum to a file management system, and the system structure can be standardized and modularized, which can suit for various requirements. The development trend of technique at home and abroad on Solid State Recorder is analyzed first. Secondly, the recorder unit scheme is introduced according to the character of UAVs, and then the process of hardware&software design and debugging are introduced. Finally, the scheme to be improved based on the forenamed project is discussed.Kinds of key technique are involved in this project.(1)Compact Flash card (CF card) is adopted to improve the recorder's strorage capacity, file system is used which can enalbe the system to manage the store flexibly and fastly.(2)USB technology is introduced to make data exchange with PC more convenient.(3)The concept of advanced everage-point method is proposed, then linearity fit of data samples is performmed with this method.(4)Modularity in hardware design is used to make the system more easier to be adapted to projects in the future.The fruit of this thesis establishes a firm foundation for the development of UAVs's FDR and has useful reference to other recorders.