KR20150011091A - A crash sensing appliance and control method of a vehicle - Google Patents

A crash sensing appliance and control method of a vehicle Download PDF

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Publication number
KR20150011091A
KR20150011091A KR20130085872A KR20130085872A KR20150011091A KR 20150011091 A KR20150011091 A KR 20150011091A KR 20130085872 A KR20130085872 A KR 20130085872A KR 20130085872 A KR20130085872 A KR 20130085872A KR 20150011091 A KR20150011091 A KR 20150011091A
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KR
South Korea
Prior art keywords
collision
vehicle
sensor
data
impact sensor
Prior art date
Application number
KR20130085872A
Other languages
Korean (ko)
Inventor
조준
Original Assignee
현대모비스 주식회사
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Publication date
Application filed by 현대모비스 주식회사 filed Critical 현대모비스 주식회사
Priority to KR20130085872A priority Critical patent/KR20150011091A/en
Publication of KR20150011091A publication Critical patent/KR20150011091A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B60R21/0136—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to actual contact with an obstacle, e.g. to vehicle deformation, bumper displacement or bumper velocity relative to the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R2021/0002—Type of accident
    • B60R2021/0004—Frontal collision
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R2021/0002—Type of accident
    • B60R2021/0006—Lateral collision
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/01204—Actuation parameters of safety arrangents
    • B60R2021/01211—Expansion of air bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/30—Sensors
    • B60Y2400/304—Acceleration sensors
    • B60Y2400/3042—Collision sensors

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

The present invention relates to a front collision detection apparatus, which is installed in a side member provided in a front end module disposed in front of a vehicle, includes a front collision detection sensor for detecting a front collision, a side collision sensor for detecting collision of a vehicle side, Wherein the airbag control unit compares data input from the front collision detection sensor and the side collision sensor with data input from the yaw rate sensor, A first step of inputting acceleration and angle data when a collision occurs and a second step of determining whether a collision occurs and a collision direction by comparing the acceleration and angular data in the first step, And a third step of determining whether the vehicle is to be deployed or not.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a collision detection apparatus and a control method for a vehicle,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a collision sensing apparatus and a control method for a vehicle, and more particularly, to sensing dynamic deformation of a vehicle caused by collision of a vehicle with a small overlap.

BACKGROUND ART [0002] In recent years, accidents of vehicles have become frequent, so that a front impact sensor (FIS) and a side impact sensor (SIS) A front member and a side member of a vehicle.

The front impact sensor and the side impact sensor transmit a signal to the airbag control unit by sensing the collision position of the vehicle by the impact object, and the airbag control unit operates the airbag corresponding to the collision position according to the processed condition to protect the vehicle occupant.

In order to detect a small overlap collision of the IIHS (Insurance Institute for Highway Safety) using a two-axis (X-axis, Y-axis) collision sensor, a frontal collision sensor and a two- Are mounted on the driver's seat and the front passenger's seat, respectively, and a main sensor for controlling the two-axis front and side impact sensors is mounted on the ACU (Airbag ControUnit) mounted on the center portion of the vehicle.

More specifically, a speed change is calculated using an X-axis signal of a left side surface impact sensor installed on a left side surface pillars of a vehicle and a Y-axis signal of a left side front surface impact sensor installed on a left side surface of the vehicle, The velocity change is calculated using the X-axis signal of the collision sensor.

Also, the velocity change is calculated using the X-axis signal of the right side impact sensor and the Y-axis signal of the right side front impact sensor, and the velocity change is calculated using the X-axis signal of the right side impact sensor. The right side impact sensor and the right side front impact sensor are installed in correspondence with the left side impact sensor.

The calculated values are combined and compared as an auxiliary data value of the main algorithm stored in the main sensor mounted on the airbag control unit to determine whether to deploy the airbag.

When such a two-axis frontal impact sensor and a two-axial lateral impact sensor are applied, the dispersion of the impact energy varies depending on whether or not there is an instantaneous braking action due to the partial frontal impact.

In order to detect such a collision, four collision sensing devices have been installed to detect all collisions of the front, rear, and right sides. However, there is a problem in that the installation cost is increased.

However, the frontal impact sensor for sensing the frontal collision signal can not accurately sense the small overlaplap collision signal value only by adding the Y-axis based on the X-axis.

In addition, the use of the two-axis collision sensor simply increases the collision detection performance by adding collision detection in the Y-axis direction, but does not reflect the vehicle dynamic characteristics of the collision situation. Thus, .

A problem to be solved by the present invention is to reduce the occurrence of non-deployment of an airbag in order to enable the performance of a conventional two-axis collision sensor to be detected by detecting a dynamic deformation of a vehicle.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, according to the present invention, there is provided a collision sensing apparatus for a vehicle, comprising: a front collision sensor installed on a side member provided in a front end module disposed in front of the vehicle, A side collision sensor for detecting a collision, and an airbag control unit mounted at a center of the vehicle and mounted on a yaw rate sensor for measuring a rotation angle at the time of a collision of the vehicle, wherein the airbag control unit includes a front collision sensor The air bag is operated by comparing the input data with the data input from the yaw rate sensor.

A method of controlling a collision sensing apparatus for a vehicle according to the present invention includes a first step of inputting acceleration and angle data at the time of a collision and a second step of comparing acceleration and angular data at the first step, And a third step of determining whether to deploy the airbag in the second step.

The details of other embodiments are included in the detailed description and drawings.

According to the present invention, there is one or more of the following effects.

It is possible to reduce the injury value by sensing the characteristic of the dynamic motion of the vehicle and to improve the sensing ability by lowering the possibility of non-deployment due to errors on the deployment of the airbag.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

1 is a plan view showing an embodiment in which a collision sensing apparatus for a vehicle according to the present invention is mounted,
Figure 2 is a top view of the collision according to one embodiment of Figure 1,
3 is a flowchart showing a control method of a collision sensing apparatus for a vehicle according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the drawings for explaining a collision sensing apparatus and a control method of a vehicle according to embodiments of the present invention.

A preferred vehicle collision sensing apparatus and control method can be changed by a person skilled in the art, and in the embodiment of the present invention is a collision sensing apparatus and a control method of a vehicle.

1 is a plan view showing an embodiment in which a collision sensing apparatus for a vehicle according to the present invention is mounted.

Referring to FIG. 1, a front impact sensor 10 installed in front of a vehicle for detecting a collision, a side impact sensor 20 installed on a side surface, and a yaw rate sensor (not shown) And an airbag control unit 30 in which the yaw rate sensor is mounted and the vehicle is installed.

The frontal impact sensor 10 is installed in a side member provided in a front end module disposed in front of the vehicle.

More specifically, the front impact sensor 10 is provided with a first frontal impact sensor (not shown) on the left side of the side member toward the front side of the vehicle, and a second frontal impact sensor And transmits the detected collision to the airbag control unit 30.

The side impact sensor 20 is provided with a first side impact sensor (not shown) to detect a side impact on the left pillar of the vehicle and a second side impact sensor (not shown) to detect a side impact on the right pillar Detects the collision on both sides and transmits it to the airbag control unit (30).

2 is a plan view illustrating collision according to one embodiment of FIG.

Referring to FIG. 2, the airbag control unit 30 is mounted such that the yaw rate sensor for measuring the rotation angle when the vehicle is collided is mounted and positioned at the center of the vehicle. However, the present invention is not limited thereto.

The airbag control unit 30 compares the data value input from the front impact sensor 10 and the side impact sensor 20 with the data value input from the yaw rate sensor to operate the airbag.

A control method of a collision sensing apparatus for a vehicle according to the present invention will now be described.

3 is a flowchart showing a control method of a collision sensing apparatus for a vehicle according to the present invention.

3, a first step of inputting acceleration and angle data when a collision occurs, a second step of determining whether a collision occurs and a collision direction by comparing the acceleration and angular data in the first step, And a third step of determining whether to deploy the airbag.

The data value of the first frontal collision sensor and the data value of the second frontal collision sensor are compared with a predetermined threshold value to check whether or not a collision has occurred on the front of the vehicle. If the data value of the first frontal collision sensor is greater than the threshold value or the data value of the first frontal collision sensor is greater than the threshold value, it is determined as a frontal collision (S100).

At the same time, the collision direction is determined by receiving the data value of the side collision sensor to determine the collision direction. If the data value of the first side impact sensor LSy is larger than the data of the second side impact sensor RSy, a collision occurs at the installation position of the first side impact sensor RSy, and if the data value of the second side impact sensor RSy is If it is larger than the data value of the first side impact sensor LSy, it is determined that a collision has occurred in the direction of the second side collision sensor. If the frontal collision occurs and the collision direction is determined, it is determined whether a partial collision has occurred (S110).

When the collision direction is determined by the first side collision sensor, if the front collision occurs and it is determined that the collision has occurred in the first side collision sensor direction, the data value (ARz) measured by the yaw rate sensor is smaller than the partial collision threshold value (Threshold_SO) It is detected that a partial collision has occurred in the direction of the first side collision sensor (S120).

When the collision direction is determined by the second side impact sensor, if the data value (ARz) measured by the yaw rate sensor is greater than the partial collision threshold value (Threshold_SO), it is detected that a partial collision occurs in the first side collision sensor direction (140) .

In case of partial collision, the deployment threshold Threshold_Fire is set to the partial collision threshold Threshold_SO (S130).

An acceleration data value in the X axis direction and an acceleration data value in the Y axis direction from the first side impact sensor and the second side impact sensor are input to the airbag control unit from the first frontal impact sensor and the second frontal impact sensor LSy, RSy). After the collision, the vehicle is turned in the yaw direction, and the yaw rate data value ARz is input to the yaw rate sensor (S130. If the collision is not a partial collision, the deployment threshold value is set as an average threshold value (Threshold_GEN) (S150).

(X axis data AccX S160 and Y axis data AccY S165) of the main acceleration sensor mounted on the electronic control unit are received and it is determined whether the final development is performed (S170).

When the X-axis acceleration data value and the Y-axis acceleration data value are larger than the deployment threshold (Threshold_Fire), the front airbag deployment is determined and the deployment command is transmitted and the transmitted airbag is deployed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It should be understood that various modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention.

<Detailed Description of Main Drawings>
10: Front collision detection sensor 20: Side collision sensor
30:

Claims (8)

A front crash sensor installed in a front end module disposed in front of the vehicle, for detecting a frontal collision;
A side impact sensor mounted on the vehicle side pillar to detect side impact; And
And an airbag control unit mounted at a center of the vehicle and mounted with a yaw rate sensor for measuring a rotation angle at the time of a collision of the vehicle,
Wherein the airbag control unit operates the airbag by comparing data input from the front impact sensor and the side impact sensor with data input from the yaw rate sensor.
A first step of inputting acceleration and angle data when a collision occurs;
A second step of comparing the acceleration and the angle data in the first step to determine whether a collision occurs and a collision direction; And
And a third step of determining whether the air bag is deployed in the second step.
3. The method of claim 2,
In the first step,
A method for controlling a collision sensing apparatus in a vehicle, wherein acceleration data values in the X-axis direction are input to a front impact sensor when a vehicle collision occurs, and acceleration data values in a Y-axis direction are input to a side impact sensor.
3. The method of claim 2,
In the first step,
When a data value is inputted from a first front-side collision sensor installed on the front left side and a data value is inputted from a second front-side collision sensor, which is installed at a front right side with a data value larger than a predetermined threshold value, The control method of the collision sensing apparatus of the vehicle.
5. The method of claim 4,
The second step comprises:
If the data value of the first side impact sensor is larger than the data of the second side impact sensor,
When the data value of the second side impact sensor is larger than the data of the first side impact sensor, it is determined that the collision is on the right collision.
6. The method of claim 5,
The second step
And when the angle data value is larger than the set threshold value, detecting the collision on the left side and deploying the airbag.
6. The method of claim 5,
And if the angle data value inputted by the yaw rate sensor is larger than the threshold value, it is detected as the right collision.
8. The method of claim 7,
A method for controlling a collision sensing device in a vehicle, the method comprising setting yaw rate data to a yaw rate sensor when the vehicle is turned in the yaw direction after a collision,

KR20130085872A 2013-07-22 2013-07-22 A crash sensing appliance and control method of a vehicle KR20150011091A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR20130085872A KR20150011091A (en) 2013-07-22 2013-07-22 A crash sensing appliance and control method of a vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR20130085872A KR20150011091A (en) 2013-07-22 2013-07-22 A crash sensing appliance and control method of a vehicle

Publications (1)

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KR20150011091A true KR20150011091A (en) 2015-01-30

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