Hardware Methods Research And Realization Of Flight Deck Semi-Simulation

Civil aviation maintenance simulator is classified into 2D maintenance trainer, 3D comprehensive maintenance trainer and fixed maintenance simulator in home and abroad simulator market, considering the requirements of advanced type training of aviation enterprise, the 3D comprehensive maintenance trainer need to be upgraded to fixed maintenance simulator, its flight deck is simulated by semi-physical,and the hardware simulation methods include hardware design, software design and communication design.Hardware design obeys the principle of setting control part and displaying part separated, flight deck is divided by region, each region contain one control board and some displaying panels, every control board could communicate with each other. Hardware part includes simulating all the panels and elements on panels of flight deck; it is difficult to simulate some elements which is multi-function.Software design use modularization and multi-file structure, software structure is divided into modules by function, each module contains some files, and each file has its own interface function for calling. Software part includes designing and programming the control program of single chip microcomputer, to collect action information on panel and control corresponding display information.Communication design use CAN bus structure, each control board is connected into a CAN network, it also contain designing communication protocol, there is conflict of competition in transmission processes, and however, low priority packet delay in the method of CAN bus process packet confliction. In view of this question, priority dynamic proving algorithm is used to solve the problem.