title: Dual roadside seismic sensor for moving road vehicle detection and characterization.
abstract: This paper presents a method for using a dual roadside seismic sensor to detect moving vehicles on roadway by installing them on a road shoulder. Seismic signals are split into fixed time intervals in recording. In each interval, the time delay of arrival (TDOA) is estimated using a generalized cross-correlation approach with phase transform (GCC-PHAT). Various kinds of vehicle characterization information, including vehicle speed, axle spacing, detection of both vehicle axles and moving direction, can also be extracted from the collected seismic signals as demonstrated in this paper. The error of both vehicle speed and axle spacing detected by this approach has been shown to be less than 20% through the field tests conducted on an urban street in Seattle. Compared to most existing sensors, this new design of dual seismic sensor is cost effective, easy to install, and effective in gathering information for various traffic management applications.
authors: School of Transportation Science and Engineering, Harbin Institute of Technology, No. 73 Huanghe Rd., NanGang Dist., Harbin 150090, China. wanghua@hit.edu.cn.
authors: Hua
authors: H
authors: Wang
authors: School of Transportation Science and Engineering, Harbin Institute of Technology, No. 73 Huanghe Rd., NanGang Dist., Harbin 150090, China. weiquan@hit.edu.cn.
authors: Wei
authors: W
authors: Quan
authors: Department of Civil & Environmental Engineering, University of Washington, Box 352700, Seattle, WA 98195-2700, USA. yinhai@uw.edu.
authors: Yinhai
authors: Y
authors: Wang
authors: Department of Civil & Environmental Engineering, University of Washington, Box 352700, Seattle, WA 98195-2700, USA. gmiller@uw.edu.
authors: Gregory R
authors: GR
authors: Miller