Design And Implementation Of Visualization System Of Urban Vehicle Data

With the rapid development of information technology,such as the Internet,the Internet Of Things,and cloud computing,hundreds of millions of data are generated every day.In the field of urban transportation,electric bicycles are increasingly used in cities due to their environmentally friendly,high speed and convenience.At the same time,the theft of electric bicycles occurred many times and the frequent occurrence of traffic accidents have attracted the attention of relevant regulatory authorities.In order to supervise the city’s electric vehicles in a good way,the internal project of my laboratory which is called Management Platform of Urban Vehicle based on RFID radio frequency identification technology to collect a large amount of electric vehicle data in a certain area of Hangzhou,and realizes data storage and basic inquiry functions of these data.However,these vehicle data are not effectively visualized.Humans’ perception of images is far stronger than digital.Mapping data into vivid charts can help users to view vehicle data stored in the system from a new perspective.Faced with a bunch of raw numbers in the database,it is difficult for system users to obtain information and value,and it is more difficult to use data to promote decisionmaking on traffic regulatory issues.Based on the above problems,this paper designs and implements a data visualization system based on the Management Platform of Urban Vehicle,and is dedicated to visualizing the data in the system.The visualization system is based on the B/S architecture,adopting the principle of front-end separation and modular development mode for system design and implementation.The research content and main work of this paper consist of the following three parts:(1)Draw the basic statistical chart based on D3.js and packaged into a tool class for visual display of vehicle statistical data and stolen analysis data in the system;(2)Realize map visualization and heat map visualization requirements in the system based on Baidu map Java Script API.The map visualization is mainly used to display the vehicle trajectory and the receiver point distribution.The thermal map visualization shows the traffic flow distribution in the relevant area with the map as the background.Accelerate front-end visual rendering with a large number of backgrounds using incremental rendering techniques and Web Worker multi-threaded rendering.(3)Design a new way of system data exploratory visualization,using MVC architecture to realize data query and analysis services.The Urban Vehicle Data Visualization System allows users to select different time ranges and visual subject exploration to visualize data stored in the system and to support a range of auxiliary functions such as chart publishing and chart export.According to the feedback from the users of the system,the visualization system of urban vehicle data designed in this paper effectively displays the data in the Management Platform of Urban Vehicle and provides important data visualization support for the decision of relevant traffic supervision problems.In general,the data visualization system designed by this theory has high practical value and can solve the data visualization requirements of Management Platform of Urban Vehicle effectively.