VEHICLE SAFETY CONTROL SYSTEM

• US 20140222306A1
• Filed: 01/28/2014
• Published: 08/07/2014
• Est. Priority Date: 02/01/2013
• Status: Active Grant

• Current Assignee: DENSO Corporation
• Original Assignee: DENSO Corporation
• Inventors: Wanami, Shingo
• Granted Patent: US 9,108,583 B2
• Time in Patent Office: Days
• US Class Current: 701/70
• CPC Class Codes: B60K 28/14 responsive to accident or emergency, e.g. deceleration, tilt of vehicle
• CPC Class Codes: B60R 2021/01252 Devices other than bags
• CPC Class Codes: B60R 21/013 including means for detecting collisions, impending collisions or roll-over
• CPC Class Codes: B60R 21/0132 responsive to vehicle motion parameters , e.g. to vehicle longitudinal or transversal deceleration or speed value
• CPC Class Codes: B60R 21/0136 responsive to actual contact with an obstacle , e.g. to vehicle deformation, bumper displacement or bumper velocity relative to the vehicle monitoring crash strength in combination with passenger seat detection B60R21/01558

Abstract

A vehicle safety control system that executes a safety stop control for safely stopping a vehicle after a vehicle collision is detected is provided. The vehicle safety control system includes a first collision detector, a first collision determination part, a behavior detector, a behavior determination part, a traveling state determination part, a safety controller. The first collision detector detects the vehicle collision. The first collision determination part determines whether a first collision has occurred based on a detection result of the first collision detector. The behavior detector detects a vehicle behavior. The behavior determination part determines whether the vehicle behavior is abnormal based on a detection value of the behavior detector. The traveling state determination part determines whether a dangerous traveling is performed. The safety controller executes the safety stop control.

Claims

1. A vehicle safety control system that executes a safety stop control for safely stopping a vehicle after a vehicle collision is detected, the vehicle safety control system comprising:

a first collision detector to detect the vehicle collision;

a first collision determination part to determine, based on a detection result of the first collision detector, whether a first collision has occurred;

a behavior detector to detect a vehicle behavior;

a behavior determination part to determine, based on a detection value of the behavior detector, whether the vehicle behavior is abnormal or not;

a traveling state determination part to determine that a dangerous traveling is performed when the first collision determination part has determined the first collision, and when the behavior determination part has determined a behavior abnormality; and

a safety controller to execute the safety stop control for the vehicle when the traveling state determination part has determined the dangerous traveling.

2. The vehicle safety control system according to claim 1, wherein:

the first collision detector is an acceleration sensor, which is placed in a compartment of the vehicle;

the first collision determination part determines, based on a slight collision threshold value and the detection result of the first collision detector, whether the first collision has occurred; and

the slight collision threshold value is set less than an airbag threshold value at which an airbag deploys.

3. The vehicle safety control system according to claim 1, wherein the first collision detector is placed outside a compartment of the vehicle.

4. The vehicle safety control system according to claim 1, wherein:

the first collision detector is a curb contact detection sensor; and

the curb contact detection sensor detects a curb contact to a tire of the vehicle.

5. The vehicle safety control system according to claim 1, wherein:

when the behavior determination part determines that the behavior abnormality has occurred within a predetermined period after the first collision determination part determines that the first collision has occurred, the traveling state determination part determines that the dangerous traveling has occurred.

6. The vehicle safety control system according to claim 1, further comprising:

a vehicle speed measuring part that measures a vehicle speed, wherein

in a case where, after the first collision determination part determines that the first collision has occurred, a measured speed by the vehicle speed measuring part exceeds a predetermined speed and the behavior determination part determines that the behavior abnormality has occurred, the traveling state determination part determines that the dangerous traveling has occurred.

7. The vehicle safety control system according to claim 2, wherein

the first collision detector is the acceleration sensor, which is placed to a substantially center of the compartment in a vehicle crosswise direction.

8. The vehicle safety control system according to claim 3, wherein

the first collision detector is an acceleration sensor, a contact sensor, or a pressure sensor.

9. The vehicle safety control system according to claim 4, wherein:

the curb contact detection sensor is an tire pressure sensor or an acceleration sensor; and

the acceleration sensor is installed to a substantially center in a vehicle crosswise direction in a compartment of the vehicle.

10. The vehicle safety control system according to claim 1, wherein:

the behavior detector is a gyro sensor, an acceleration sensor, or a combination of the gyro sensor and the acceleration sensor; and

the gyro sensor and the acceleration sensor are installed to a substantially center of a compartment of the vehicle in a vehicle crosswise direction.

11. The vehicle safety control system according to claim 1, wherein:

when the detection value detected by the behavior detector exceeds a predetermined value, the behavior determination part determines that the behavior abnormality has occurred; and

the detection value is;

one of a yaw rate, a roll rate, a pitch rate, a first acceleration along a vehicle front-and-rear direction, a second acceleration along a vehicle crosswise direction, and a third acceleration along a vehicle up-and-down direction;

or

a combination of two or more of the yaw rate, the roll rate, the pitch rate, the first acceleration, the second acceleration, and the third acceleration.

12. The vehicle safety control system according to claim 8, wherein

the pressure sensor measures an inner pressure of a side door of the vehicle.