Object detection system, protection system, and vehicle

• US 7,543,677 B2
• Filed: 03/20/2006
• Issued: 06/09/2009
• Est. Priority Date: 03/22/2005
• Status: Active Grant

• Current Assignee: Joyson Safety Systems Japan K.K.
• Original Assignee: Takata Corporation (Ningbo Junsheng Investment Group Co., Ltd.)
• Inventors: Igawa, Tadahiro
• Primary Examiner(s): Ilan; Ruth
• Application Number:
  US11/384,536
• Publication Number:
  US 20060213714A1
• Time in Patent Office: 1,177 Days
• Field of Search: 180/274, 280/735, 280/730.1, 701/45, 296/187.04
• US Class Current: 180/274
• CPC Class Codes: B60R 21/0134 responsive to imminent contact with an obstacle , e.g. using radar systems

Abstract

A system of detecting an object existing at the periphery of a vehicle is provided that is effective in reducing repair cost for a vehicle. In one form, a protection system installed in a vehicle is adapted to detect an object existing at the periphery of the vehicle through a camera sensor, determine, based on the detected information, whether the object is a vulnerable road user (person), and change the operation mode of outside protection devices according to the body size of the vulnerable road user.

Claims

1. A combination comprising:

a detecting device mounted to a vehicle configured to detect information regarding a shape of an object about a periphery of the vehicle without engagement therewith;

a discriminating device configured to determine if the object is a person based on the detected information regarding the object shape;

a protecting device operable to reduce impact forces acting on the object in the event of a vehicle collision therewith; and

a control device configured to be operable to actuate the protecting device when the discriminating device determines that the object is a person,

wherein the discriminating device is configured so that if the object is determined to be a person, the discriminating device determines a body size of the person based on the detected information, the protecting device includes different operating modes, the control device is configured to actuate the protecting device in one of the operating modes based on the person'"'"'s body size, and the protecting device comprises a first protecting device at a front end of the vehicle, a second protective device at a hood of the vehicle, and a third protective device at a front windshield of the vehicle, and the control device actuates one or more of the protecting devices based on the person'"'"'s body size.

2. A pedestrian protection system for a vehicle, the pedestrian protection system comprising:

a sensor that detects information regarding size of a pedestrian prior to a vehicle collision with the pedestrian;

a plurality of external pedestrian protection devices for being deployed at different areas about the vehicle including a hood airbag and a front windshield airbag; and

a controller that is configured to determine and actuate the optimum protection device or protection devices to be deployed based on the detected information for minimizing vehicle impact forces with the pedestrian with the controller actuating both the hood and front windshield airbags for larger size pedestrians, and for smaller size pedestrians the controller actuates the hood airbag but not the front windshield airbag.

3. The pedestrian protection system of claim 2 including an input element configured to detect at least one of relative speed and relative position between the vehicle and the pedestrian without engagement therebetween, and the controller is configured to predict a collision between the vehicle and the pedestrian based on the at least one of the detected relative speed and the detected relative position with the controller operable to actuate the device or devices if a vehicle collision with the pedestrian is predicted.

4. The pedestrian protection system of claim 3 including a sensor that detects a vehicle collision with the controller operable to actuate the device or devices if the vehicle collision occurs.

5. A pedestrian protection system for a vehicle, the pedestrian protection system comprising:

a sensor that detects information regarding a predetermined dimension of a pedestrian prior to a vehicle collision with the pedestrian;

a plurality of external pedestrian protection devices for being deployed at different areas about the vehicle; and

a controller that is configured to determine and actuate the optimum protection device or combination of protection devices to be deployed based on the detected information for minimizing vehicle impact forces with the pedestrian,

wherein the predetermined dimension comprises height of the pedestrian, the controller determines whether the pedestrian is a tall, medium-height, or short person, and the protection devices comprise a front end external air bag, a hood air bag, and a front windshield air bag such that the controller actuates all three air bags if the pedestrian is tall, the front-end and hood air bags if the pedestrian is of medium height, and the front-end air bag if the pedestrian is short.

6. A method of controlling operation of protection devices of a vehicle for pedestrian protection, the method comprising:

detecting presence of an object spaced from the periphery of the vehicle;

determining if any present object is a pedestrian;

determining a physical characteristic of any present pedestrian prior to vehicle engagement therewith;

predicting whether the vehicle will collide with the pedestrian based on predetermined detected information regarding operation of the vehicle and the pedestrian; and

deploying a either a hood airbag or both the hood airbag and a front windshield airbag based on the pedestrian'"'"'s physical characteristic if a collision is predicted with the pedestrian.

7. The method of claim 6 including detecting a vehicle collision with a pedestrian and only deploying the the hood airbag or both the hood and front windshield airbags if both a collision is predicted and a collision is detected.

8. A method of controlling operation of protection devices of a vehicle for pedestrian protection, the method comprising:

detecting presence of an object spaced from the periphery of the vehicle;

determining if any present object is a pedestrian;

determining a physical characteristic of any present pedestrian prior to vehicle engagement therewith;

predicting whether the vehicle will collide with the pedestrian based on predetermined detected information regarding operation of the vehicle and the pedestrian; and

deploying a predetermined protection device or devices based on the pedestrian'"'"'s physical characteristic if a collision is predicted,

wherein the physical characteristic is the pedestrian'"'"'s height, and

determining whether the pedestrian is tall, of medium-height, or short and deploying protective devices at the front-end, hood and windshield of the vehicle if the pedestrian is tall, protection devices at the front-end and hood if the pedestrian is of medium height, and a protection device at the front-end if the pedestrian is short.