Traffic monitoring using digital sound field mapping

Author

Chen, Shiping ; Sun, Ziping ; Bridge, Bryan

Author_Institution

Dept. of Mech. Eng., Maryland Univ., College Park, MD, USA

Volume

50

Issue

6

fYear

2001

fDate

11/1/2001 12:00:00 AM

Firstpage

1582

Lastpage

1589

Abstract

A new traffic sensing technique is described that utilizes a microphone array to detect the sound waves generated by the road vehicles. The detected signals are then digitized and processed by an on-site computer using a correlation based algorithm, which extracts key data reflecting the road traffic conditions, e.g., the speed and density of vehicles on the road, automatically on site. In comparison with existing traffic sensors, the proposed system offers lower installation and maintenance costs and is less intrusive to the surrounding built environment. The results of theoretical analysis, computer simulation, and preliminary experimental results are presented

Keywords

acoustic correlation; acoustic field; acoustic transducer arrays; microphones; monitoring; road traffic; correlation based algorithm; density; digital sound field mapping; key data; microphone array; road vehicles; sound waves; speed; traffic monitoring; traffic sensing technique; Computerized monitoring; Costs; Data mining; Microphone arrays; Road vehicles; Sensor systems; Signal detection; Signal processing; Traffic control; Vehicle detection;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/25.966587

Filename

966587