Method for detecting traffic flow parameters based on compound sensor

A composite sensor and parameter detection technology, applied in traffic flow detection, road vehicle traffic control system, traffic control system, etc., can solve problems such as high cost, specific type of vehicle subdivision, and complex sensor group structure.

Active Publication Date: 2015-11-11
BEIJING JIAOTONG UNIV
View PDF5 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure of this sensor group is complex, the accuracy of detection results is not high, and the cost is high
For the vehicle type identification technology, most of the existing technologies only carry out a simple first-level classification, that is, they are on

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
  • Method for detecting traffic flow parameters based on compound sensor
  • Method for detecting traffic flow parameters based on compound sensor
  • Method for detecting traffic flow parameters based on compound sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Below in conjunction with accompanying drawing, preferred embodiment is described in detail. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0031] The composite sensor includes two piezoelectric sensors and one geomagnetic sensor, one geomagnetic sensor is placed in the two piezoelectric sensors, and the fixed distance between the two piezoelectric sensors is set to 3m. Collect vehicle axle number and vehicle length information through composite sensors. The statistics of the number of axles is obtained by counting the number of pulse signals generated by the axles exerting pressure on the piezoelectric sensor. figure 1 is the layout diagram of the composite sensor, figure 2 It is a flow chart of data processing.

[0032] Count the vehicles that meet the definition, if the vehicle is driving normally or passing the sensor, use the formula Calculate the vehicle len...

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 provides a method for detecting traffic flow parameters based on a compound sensor. The method includes: based on the time when a vehicle arrives and leaves, collecting statistics of the traffic flow, and at the same estimating the speed of the vehicle and the length of the vehicle; based on information of the axle, the length of the vehicle and the speed of the vehicle, conducting a I level vehicle type classification on the vehicle; based on the I level vehicle type classification result, extracting vehicle wave characteristics, and conducting II level vehicle type classification. The method, by utilizing an individual geomagnetic sensor, can conduct compound detection on the traffic parameters, especially the level identification of the vehicle type. The method herein reduces feature calculated amount, increases detection efficiency, and provides basic data for smart traffic systems, traffic planning, etc.

Description

technical field [0001] The invention relates to the technical field of acquiring traffic flow parameters, in particular to a method for detecting traffic flow parameters by using a single geomagnetic sensor. Background technique [0002] Acquisition of road traffic flow parameters is an important fundamental issue in traffic management, traffic safety assurance and traffic infrastructure monitoring and maintenance. Years of practice have shown that intelligent transportation systems have provided theoretical, technical support and practical directions for solving urban traffic problems. The subsystems of the intelligent transportation system, the advanced traffic information service system and the advanced traffic management system are all based on the perfect road network traffic information. [0003] In the existing methods of detecting traffic flow parameters using sensor groups, most of them use multiple geomagnetic sensors to detect vehicle information, and then obtain...

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
IPC IPC(8): G08G1/01G08G1/017G08G1/042
Inventor 秦勇贾利民杨艳芳董宏辉唐堃彭怀军李斌张纪升孙晓亮
Owner BEIJING JIAOTONG 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

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap