公开(公告)号：US09311816B2

公开(公告)日：2016-04-12

申请号：US14348026

申请日：2012-09-27

Applicant: Intelligent Imaging Systems Inc.

Inventor： Wolfgang Engler ,  Brian Heath ,  Cedar Mah

IPC: G08G1/01 ,  G08G1/042 ,  G08G1/017

CPC classification number: G08G1/042 ,  G08G1/017

Abstract: Magnetometers under the road surface detect variations in the vertical and longitudinal horizontal components of the magnetic field over time in response to passing vehicles. A trajectory of these components in the phase space of these field components is regularized to obtain a magnetic signature. Magnetic signatures are compared using cross-correlation over arc length to identify vehicles. Inductance sensors can be used to detect vehicles and help determine the beginning and end of magnetic signatures.

Abstract translation: 路面下的磁力计响应于过去的车辆，随时间检测磁场垂直和纵向水平分量的变化。 这些场分量的相位空间中的这些分量的轨迹被正则化以获得磁性特征。 使用电弧长度的互相关来比较磁性签名以识别车辆。 电感传感器可用于检测车辆，并帮助确定磁性签名的开始和结束。

公开(公告)号：US20140232563A1

公开(公告)日：2014-08-21

申请号：US14348026

申请日：2012-09-27

Applicant: Intelligent Imaging Systems Inc.

Inventor： Wolfgang Engler ,  Brian Heath ,  Cedar Mah

IPC: G08G1/042

CPC classification number: G08G1/042 ,  G08G1/017

Abstract: Magnetometers under the road surface detect variations in the vertical and longitudinal horizontal components of the magnetic field over time in response to passing vehicles. A trajectory of these components in the phase space of these field components is regularized to obtain a magnetic signature. Magnetic signatures are compared using cross-correlation over arc length to identify vehicles. Inductance sensors can be used to detect vehicles and help determine the beginning and end of magnetic signatures.

Abstract translation: 路面下的磁力计响应于过去的车辆，随时间检测磁场垂直和纵向水平分量的变化。 这些场分量的相位空间中的这些分量的轨迹被正则化以获得磁性特征。 使用电弧长度的互相关来比较磁性签名以识别车辆。 电感传感器可用于检测车辆，并帮助确定磁性签名的开始和结束。