On-line queuing length detection method based on floating vehicle data

A floating car data and detection method technology, applied in the field of transportation, can solve the problems of large matching errors, no consideration of abnormal parking, etc., and achieve the effect of simple method, convenient traffic optimization, and good processing efficiency

Active Publication Date: 2014-08-20
SUN YAT SEN UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the matching of the stop point by this method is only filtered by setting the projection distance threshold, but when the vehicle is parked or driving at a low speed, the GPS point will drift greatly, which will lead to a large matching error; and the The method does not consider the situation of abnormal parking in front of the intersection

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
  • On-line queuing length detection method based on floating vehicle data
  • On-line queuing length detection method based on floating vehicle data
  • On-line queuing length detection method based on floating vehicle data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0043] The present invention utilizes a comprehensive map matching algorithm that considers characteristics such as confidence points, topological accessibility, and time accessibility. On the premise of strengthening the matching accuracy of zero-speed points, the initial queuing range of the intersection is delineated, and the Statistical method, and considering the situation of abnormal queuing parking, estimate the position of the last floating car parking in a specific time interval, and correct to get the maximum queuing length.

[0044] Step 1. Match the current position of the vehicle with the electronic map according to the GPS positioning information.

[0045] Map matching is the behavior of associating the current position of the vehicle with the road on the electronic map based on the vehicle GPS positioning information co...

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 present invention provides an online queuing length detection method based on floating car data with good implementability, high efficiency and low cost, comprising the following steps: step 1, matching the current position of the vehicle with the electronic map according to the GPS positioning information ; Step 2, according to the preset time interval, statistical interval and parking point, count the number of parking; Step 3, estimate the queue length and add error limit correction.

Description

Technical field [0001] The present invention belongs to the field of transportation. Background technique [0002] The key factor of restrictions on urban main roads is the cross section of the signal.The traffic capacity at the signal intersection is generally lower than that of conventional road sections. Due to the existence of red lights, traffic congestion and delay at the signal intersection will often occur.The queuing length is an important indicator of the operating efficiency of evaluation signal crossing. It can timely reflect the running status of the traffic at the intersection, which has a vital role in optimizing the signal. [0003] The current status of research and technology at home and abroad is mainly as follows: [0004] First, model research.Scholars at home and abroad have done a lot of research on the cross -line queuing length calculation model. The more classic are Miller, Akcelik, Synchro, SIGNAL94, Transyt and other queuing length models, as well as m...

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 Patents(China)
IPC IPC(8): G08G1/01
Inventor 何兆成庄立坚
Owner SUN YAT SEN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products