Design Of Guided Vehicle Control System Based On Bei Dou Positioning

With quickly development of passenger transport market in China civil aviation,the number of civil airport flights has increased dramatically,and the task of airport guidance has become more and more onerous.The traditional operation mode of aircraft guided vehicles in my country usually uses walkie-talkies or mobile phone software to realize the dispatch of guided vehicles by means of communication,but this mode of operation has problems such as low efficiency guidance and also causes accident and flight rates delay.This thesis aims to develop a vehicle control system based on Bei Dou positioning for guiding vehicle operate.It can not only ensure accurate guidance of vehicle operation,but also ensure real-time communication with the monitoring center.Which has great significance to improve the efficiency of airport operation.In this thesis,the existing airport guidance task mode was improved and the overall design scheme of the guidance vehicle control system was planned.The hardware platform is mainly composed of the ARM Cortex series main control module,Bei Dou positioning module,4G communication module,display module,storage module,and power conversion module.The positioning part of Bei Dou improves and optimizes the positioning accuracy through the weighted least squares method based on the weight estimation model.The software design combines embedded technology,Android system,data storage,Bei Dou positioning and 4G communication technology.After editing and compiling the system according to functional needs,the application for the guided vehicle control system has been developed.successfully.The app has visual login,task execution and completion,information query and flight status display and other functions.The function test of the whole guided vehicle control system was carried out.By comparing and analyzing the mean coordinate axis error,95% CEP and 95% SEP error of the experimental results,it can be seen that when the weighted least square method is used for positioning settlement,the weight estimation model is used to determine the weight.Compared with the least square method,the positioning deviation is reduced,and the The positioning accuracy of the system.After the test,all functions of the control system of the guide car can run perfectly on the terminal platform through the APP.The function realization of this system greatly increases the efficiency of airport guidance,realizing good information exchange with the tower,and reduces the accident rate of the airport by putting the main control in the console of the guide car.It lays a foundation for the establishment of future intelligent airports and pushes forward more vigorous development of civil aviation in China.