Design And Implementation Of A Vehicle Positioning And Navigation System For Underground Parking Lots Based On UWB

With the rapid development of the national economy,the number of cars continues to grow,and the parking resources on the ground are becoming more and more limited,so more and more places have established underground parking lots,such as large shopping malls,high-rise residential areas,and various social places.However,some large underground parking lots are unfamiliar with the owners and the route planning is unclear,which has caused a series of problems such as difficulty in parking and finding a car.The emergence of these problems has seriously affected people’s experience and efficiency of underground parking.Therefore,indoor positioning and navigation technology is used to solve the above problems and make the underground parking lot more perfect.In this paper,the overall functional design of the system and business processes are designed.The indoor positioning method based on ranging is selected,and the positioning algorithm and navigation algorithm are theoretically deduced based on(UWB)network technology.Establish a bases station and labels networking method.The host computer reads the internal data of the base station through the serial port.During positioning,the base station sends three sets of distance information to the host computer.The host computer performs data processing on the QT platform through a nonlinear filtering algorithm.Obtain real-time tag position data,and use the communication module to send the data to the smart terminal.The smart terminal processes the data after receiving it,and then displays the corresponding location information on the electronic map.When the user issues a navigation request,the smart terminal calls the internal Dijkstra path planning algorithm to implement the navigation function,and displays the path information on the display screen of the smart smart terminal.