WRONG-WAY-TRAVEL WARNING DEVICE AND WRONG-WAY-TRAVEL WARNING METHOD

• US 20110121992A1
• Filed: 04/09/2009
• Published: 05/26/2011
• Est. Priority Date: 04/11/2008
• Status: Active Grant

• Current Assignee: Aisin AW Company Limited (Aisin Corp.), DENSO Corporation, Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Aisin AW Company Limited (Aisin Corp.), DENSO Corporation, Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Ishikawa, Tomoaki, Yoshida, Masaki, Kanba, Motoki, Miura, Naoto, Tsurumi, Kiyoshi, Konaka, Daisuke, Nakamura, Masaki, Nakao, Koichi
• Granted Patent: US 8,421,648 B2
• Time in Patent Office: Days
• US Class Current: 340/905
• CPC Class Codes: B62D 15/029 Steering assistants using warnings or proposing actions to the driver without influencing the steering system
• CPC Class Codes: G01C 21/26 specially adapted for navigation in a road network
• CPC Class Codes: G01C 21/3658 Lane guidance
• CPC Class Codes: G01C 21/3697 Output of additional, non-guidance related information, e.g. low fuel level G01C21/3679 takes precedence
• CPC Class Codes: G08G 1/056 with provision for distinguishing direction of travel
• CPC Class Codes: G08G 1/075 Ramp control
• CPC Class Codes: G08G 1/166 for active traffic, e.g. moving vehicles, pedestrians, bikes

Abstract

A wrong-way-travel warning device comprising a vehicle speed detecting part configured to detect a vehicle speed of a vehicle, a part configured to detect a position of the vehicle, an angle detecting part configured to detect an angle of a vehicular longitudinal direction of the vehicle relative to a lane marking if the vehicle speed of the vehicle becomes less than or equal to a predetermined value, and a warning part configured to issue a warning to an occupant if the position of the vehicle is on a main lane of a highway and if the angle becomes about 90 degrees, is provided.

Claims

1. A wrong-way-travel warning device for detecting a possibility of a wrong-way-travel, comprising:

a vehicle speed detecting part configured to detect a vehicle speed of a vehicle;

a part configured to detect a position of the vehicle;

an angle detecting part configured to detect an angle of a vehicular longitudinal direction of the vehicle relative to a lane marking if the vehicle speed of the vehicle becomes less than or equal to a predetermined value; and

a wrong-way-travel detecting part configured to detect a possibility of a wrong-way-travel if the position of the vehicle is on a main lane of a highway and if the angle becomes about 90 degrees.

2. A wrong-way-travel warning device according to claim 1, wherein the angle detecting part is configured to detect the angle by temporal integrating a yaw rate while setting as a reference the vehicular longitudinal direction at the time when the vehicle speed becomes less than or equal to the predetermined value.

3. A wrong-way-travel warning device according to claim 1, further comprising:

a warning part configured to issue a warning to a vehicle occupant if the wrong-way-travel detecting part detects that there is a possibility of a wrong-way-travel.

5. A wrong-way-travel warning device according to claim 2, further comprising:

a warning part configured to issue a warning to a vehicle occupant if the wrong-way-travel detecting part detects that there is a possibility of a wrong-way-travel.

4. A wrong-way-travel warning method for detecting a possibility of a wrong-way-travel, comprising the steps of:

detecting by a vehicle speed detecting part a vehicle speed of a vehicle;

detecting that the vehicle is traveling on a main lane of a highway;

detecting by an angle detecting part an angle of a vehicular longitudinal direction of the vehicle relative to a lane marking if the vehicle speed of the vehicle becomes less than or equal to a predetermined value; and

detecting by a wrong-way-travel detecting part that there is a possibility of a wrong-way-travel if the angle becomes about 90 degrees.