HOST-VEHICLE RISK ACQUISITION DEVICE AND METHOD

• US 20130289868A1
• Filed: 06/25/2013
• Published: 10/31/2013
• Est. Priority Date: 07/12/2007
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: KINDO, Toshiki, ASO, Kazuaki, HARADA, Masahiro
• Granted Patent: US 9,020,749 B2
• Time in Patent Office: Days
• US Class Current: 701/301
• CPC Class Codes: G01S 13/726 Multiple target tracking
• CPC Class Codes: G01S 2013/932 using own vehicle data, e.g. ground speed, steering wheel direction
• CPC Class Codes: G08G 1/16 Anti-collision systems road vehicle drive control systems for predicting or avoiding probable or impending collision otherwise than by control of a particular sub-unit B60W30/08
• CPC Class Codes: G08G 1/166 for active traffic, e.g. moving vehicles, pedestrians, bikes

Abstract

A host-vehicle risk acquisition device includes a host-vehicle path acquisition portion that acquires a path of a host-vehicle, and an obstacle path acquisition portion that acquires a plurality of paths of an obstacle existing around the host-vehicle. A collision risk acquisition portion acquires an actual collision risk, which is a collision risk between the host-vehicle and the obstacle when the host-vehicle is in a travel state based on the path of the host-vehicle and the plurality of paths of the obstacle. An offset risk acquisition portion acquires an offset risk, which is a collision risk between the host-vehicle and the obstacle in an offset travel state, which is offset from the travel state of the host-vehicle.

Claims

1. A host-vehicle risk acquisition method comprising:

detecting a travel state of a host-vehicle;

calculating an offset travel state of the host-vehicle which is offset from the host-vehicle travel state;

calculating a host-vehicle offset possible path based on the host-vehicle offset travel state;

calculating a plurality of possible paths of an obstacle existing around the host-vehicle; and

calculating an offset risk, which is a collision risk between the host-vehicle and the obstacle when the host-vehicle travels on the host-vehicle offset possible path.

2. The host-vehicle risk acquisition method according to claim 1, wherein the travel state of the host-vehicle includes at least one of a position and speed of the host-vehicle.

3. The host-vehicle risk acquisition method according to claim 1, further comprising:

calculating a host-vehicle possible path based on the detected host-vehicle travel state;

calculating an actual collision risk, which is a collision risk between the host-vehicle and the obstacle when the host-vehicle travels on the host-vehicle possible path;

storing the calculating offset risk; and

comparing the actual collision risk calculated in a current cycle with the offset risk stored in a previous cycle to evaluate the travel state of the host-vehicle.

4. The host-vehicle risk acquisition method according to claim 2, further comprising:

calculating a host-vehicle possible path based on the detected host-vehicle travel state;

calculating an actual collision risk, which is a collision risk between the host-vehicle and the obstacle when the host-vehicle travels on the host-vehicle possible path;

storing the calculating offset risk; and

comparing the actual collision risk calculated in a current cycle with the offset risk stored in a previous cycle to evaluate the travel state of the host-vehicle.