Research And Design Of Highway Vehicle Positioning System Based On UWB Technology

The Inner Mongolia Autonomous Region’s "13th Five-Year Plan for Highway and Waterway Transportation Development" proposes to continuously improve the road operation monitoring system.One of the indicators is that the real-time monitoring coverage rate of key highway sections is 100%,and the important nodes of ordinary national highways the monitoring coverage rate is 60%.In this context.Research and development of highway vehicle driving condition monitoring system is an important content.This topic comes from the intelligent lane sensing system sub-project of Beijing Lianyu Lutong Company.The system consists of the expressway along the line roadside base station,the vehicle tag and the multi-functional intelligent processing platform.The vehicle tag mainly records the initial information of the vehicle,and wirelessly communicates with the roadside base station without interruption,and the roadside base station uploads the accepted information to the intelligent processing platform.The intelligent processing platform analyzes the massive monitoring data to realize the interaction of vehicle and road information and the whole process of vehicle monitoring.This paper is mainly studies the roadside base station and vehicle tag hardware design and embedded software development part of the system,and completes the hardware circuit module design and debugging.The hardware design is completed by Altium Designer software.According to the functions and requirements to be realizedin the project,the design of roadside base station includes STM32 minimum system,power module,Ultra Wide Band(Ultra Wide Band,UWB)wireless transceiver module and The 4th Generation Mobile Communication Technology (The 4th Generation Mobile Communication Technology,4G) wireless transmission module.The design of Vehicle tags includes the STM32 minimum system,lithium battery charging circuit and UWB wireless transceiver module.The vehicle tag periodically sends positioning signals,the roadside base station receives the positioning signal and obtains timestamp information,and the roadside base station packs the positioning data,and transmits the positioning data packet to the server through the 4G module.Using Keil UVision5 software to complete the development of embedded software.The software development part mainly includes the roadside base station and the vehicle tag for information interaction to obtain the positioning information and transmit the positioning data through the 4G module and Transmission Control Protocol(Transmission Control Protocol,TCP).Finally,it is possible to monitor the driving conditions of highway vehicles.