Patents by Inventor Wenteng Ma

Wenteng Ma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Traffic flow monitoring for intersections with signal controls
    Patent number: 8279086
    Abstract: A method and system are provided for determining travel time through intersections by assigning an initial position for a virtual probe in the intersection and updating the position and velocity for the virtual probe such that the position and velocity of the virtual probe are determined multiple times from a time when the virtual probe is at an initial position until the time when the updated position of the virtual probe is past a stop line at the intersection. Updating the position and velocity of the virtual probe involves retrieving vehicle detection data and traffic control signal data to determine a distance from the virtual probe to the closer of a stop line and a vehicle in a queue in front of the virtual probe. The length of the queue is determined using the intersection of two shockwaves.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: October 2, 2012
    Assignee: Regents of the University of Minnesota
    Inventors: Xianghong Liu, Wenteng Ma, Xinkai Wu
  • TRAFFIC FLOW MONITORING FOR INTERSECTIONS WITH SIGNAL CONTROLS
    Publication number: 20100079306
    Abstract: A method and system are provided for determining travel time through intersections by assigning an initial position for a virtual probe in the intersection and updating the position and velocity for the virtual probe such that the position and velocity of the virtual probe are determined multiple times from a time when the virtual probe is at an initial position until the time when the updated position of the virtual probe is past a stop line at the intersection. Updating the position and velocity of the virtual probe involves retrieving vehicle detection data and traffic control signal data to determine a distance from the virtual probe to the closer of a stop line and a vehicle in a queue in front of the virtual probe. The length of the queue is determined using the intersection of two shockwaves.
    Type: Application
    Filed: September 25, 2009
    Publication date: April 1, 2010
    Applicant: REGENTS OF THE UNIVERSITY OF MINNESOTA
    Inventors: Xianghong Liu, Wenteng Ma, Xinkai Wu