Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Vehicle travel path reconstruction macro/micro integrated new method based on automatic vehicle identification data

A travel path and new method technology, applied in data processing applications, forecasting, computing and other directions, can solve the problems of analyzing vehicle travel paths, failing to integrate macro and micro path information, and underutilizing effective information.

Active Publication Date: 2015-09-16
TONGJI UNIV
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, this method only reconstructs the vehicle travel path from the microscopic level of individual vehicle travel, and does not analyze the vehicle travel path from the perspective of macroscopic network equilibrium, and does not realize the integration of macroscopic and microscopic routing information. Therefore, the effective information of vehicle travel detected by AVI underutilized

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vehicle travel path reconstruction macro/micro integrated new method based on automatic vehicle identification data
  • Vehicle travel path reconstruction macro/micro integrated new method based on automatic vehicle identification data
  • Vehicle travel path reconstruction macro/micro integrated new method based on automatic vehicle identification data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Embodiment 1: This path reconstruction method is used for figure 2 of a larger-scale road network shown. The road network includes 127 nodes, 151 road sections, and 42 traffic cells. Deploy vehicle license plate video detectors on road sections. Required input information: vehicle license plate information after identification, vehicle arrival time, AVI detector number.

[0057] After obtaining the above input information, use the vehicle A For example, the complete travel path reconstruction of A part of the path, the steps are as follows:

[0058] (1) Initialization of the path flow estimator

[0059] (1.1) Path set generation. Using AVI Segment Dual Variables , the dual variable of non-AVI segment and path dual variable Update segment cost . Determine the shortest path for all OD pairs, update the path flow estimator working path set .

[0060] (1.2) The path flow estimator seeks a feasible path flow solution that satisfies the stochastic user equi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the field of traffic planning and management and specifically relates to a vehicle travel path reconstruction macro / micro integrated new method based on automatic vehicle identification (AVI) data. The method constructs a macro / micro integrated reconstructed frame only by utilizing the automatic vehicle identification data and is characterized by, in micro level, reconstructing vehicle paths based on individual path selection principle and with particle filter theory being integrated, and increasing a reconstruction path traffic and path set constraint for a path traffic estimator in macro level; and in the macro level, realizing path traffic estimation based on random user equalization principle and with the path traffic estimator being integrated, and updating travel time consistency of particle filter and a path gravitation observation equation. Through the method, high-precision and complete vehicle travel paths and path traffic and road section traffic can be obtained under the conditions that only the AVI data is available and the AVI coverage rate is low.

Description

technical field [0001] The invention belongs to the field of traffic planning and management, and in particular relates to a new macro and micro integration method for vehicle travel path reconstruction based on vehicle automatic identification data. Background technique [0002] In recent years, the collection of traffic system information has rapidly changed from "section-type" detection represented by induction coils, "mobile-type" detection represented by floating vehicles to "wide-area" vehicle automatic recognition represented by video license plate automatic recognition. (Automatic Vehicle Identification, AVI) to detect the trend of transition. AVI technology includes video license plate automatic identification technology, radio frequency identification technology and non-stop electronic toll collection technology. The AVI system can collect information such as vehicle ID, vehicle transit time, and vehicle location. AVI technology, especially video license plate au...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04
Inventor 孙剑杨剑浩冯羽
Owner TONGJI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com