KR20150043886A - Air Bag control method of automobile - Google Patents

Air Bag control method of automobile Download PDF

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Publication number
KR20150043886A
KR20150043886A KR20130122859A KR20130122859A KR20150043886A KR 20150043886 A KR20150043886 A KR 20150043886A KR 20130122859 A KR20130122859 A KR 20130122859A KR 20130122859 A KR20130122859 A KR 20130122859A KR 20150043886 A KR20150043886 A KR 20150043886A
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KR
South Korea
Prior art keywords
sensor
airbag
value
sensor value
collision detection
Prior art date
Application number
KR20130122859A
Other languages
Korean (ko)
Inventor
성철웅
Original Assignee
현대모비스 주식회사
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Priority to KR20130122859A priority Critical patent/KR20150043886A/en
Publication of KR20150043886A publication Critical patent/KR20150043886A/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
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/01013—Means for detecting collision, impending collision or roll-over
    • 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
    • B60R2021/01013—Means for detecting collision, impending collision or roll-over
    • B60R2021/01027—Safing sensors
    • 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
    • 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

Abstract

The method includes determining whether at least one of the collision detection sensor and the clearing sensor is a normal operation, executing a first air bag ignition algorithm if either the collision detection sensor or the shaping sensor is normal, Wherein the second airbag ignition algorithm is executed when the sensor and the shaping sensor are normal, and if the sensors and the shaping sensor are normal, Acquiring a sensor value and a second sensor value measured at the inertial sensor and igniting the airbag if the first sensor value meets a set first sensor reference value and the second sensor value meets a set second sensor reference value The present invention also provides a method of igniting an airbag of an automobile.

Figure P1020130122859

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of igniting an airbag in an automobile, and more particularly, to a method of igniting an airbag in an automobile.

BACKGROUND ART [0002] Generally, automobiles are equipped with various safeguards for protecting an occupant in the event of a collision. Typically, the airbag inflates by gas to protect the occupant with a cushioning force.

A controller such as an ECU (Electronic Control Unit) and an ACU (Airbag Control Unit) determines whether or not the vehicle is collided by using a signal output from a collision detection sensor for detecting a collision of the vehicle, And an airbag ignition algorithm for operating the airbag.

The airbag ignition algorithm, i.e., the shaking algorithm, is logic that is activated when the sensor output exceeds a minimum set value in order to confirm that a collision of an automobile has actually occurred. In the conventional airbag ignition algorithm, A first case where the output value becomes equal to or greater than a set threshold value and a second case where the output value of the collision detection sensor becomes equal to or greater than a set threshold value.

However, in the conventional shaking algorithm, even if any one of the above two cases is used, when a local collision is applied to the mounting portion of the controller or the mounting portion of the collision sensing sensor, , There is a possibility that the airbag is opened in the morning.

It is an object of the present invention to provide a method of igniting an airbag in an automobile in the event of a vehicle collision.

A method for igniting an airbag in an automobile according to the present invention includes the steps of: determining whether at least one of a collision detection sensor and a clearing sensor is in a normal operation; and if the collision detection sensor and the clearing sensor are normal, Executing a second airbag ignition algorithm if the collision detection sensor and the shaping sensor are normal, and if the inertial sensor is in normal operation during the execution of the first airbag algorithm, Acquiring a first sensor value measured at any one of the first and second inertial sensors and a second sensor value measured at the inertial sensor; and acquiring a first sensor reference value and a second sensor reference value, And igniting the airbag.

If the sensor value input from the collision detection sensor and the shifting sensor and the sensor value input from the front impact sensor are within an error range, the collision detection sensor and the shifting sensor are in a normal state, It is judged to be operating.

The method for igniting an airbag of an automobile according to the present invention includes stopping the airbag ignition algorithm if the collision detection sensor and the clearing sensor do not operate normally.

The acquiring step may include the steps of: determining whether a sensor value measured by the inertia sensor and a sensor value inputted from a front impact sensor are within an error range; and if the sensor value is within the error range, And obtaining the first sensor value as a first time interval and the second sensor value as a second time interval.

The acquiring step according to the present invention further comprises the step of confirming that the inertial sensor is not operating normally and stopping the airbag ignition algorithm if the sensor value is not within the error range.

The first time interval according to the present invention is 1.5 to 2 times the second time interval.

The first time interval according to the present invention is 400 us to 500 us and the second time interval is 150 us to 250 us.

The ignition step according to the present invention is characterized in that the first sensor value is obtained by comparing the first reference sensor value and the second sensor value with the second reference sensor value, 2 sensor value, and igniting the airbag if the first and second sensor values are equal to or greater than the first and second reference sensor values, or at least one of the first and second sensor values is different from the first And disabling the airbag if it is less than the reference sensor value.

The second reference sensor value according to the present invention is 1.1 to 1.2 times the reference sensor value for one of the collision detection sensor and the clearing sensor that does not operate normally.

The method for igniting an airbag of an automobile according to the present invention includes the steps of acquiring sensor values measured at the collision detection sensor and the shifting sensor at a third time interval when the second airbag ignition algorithm is executed, Igniting the airbag if the sensor value measured by the clearing sensor is greater than or equal to a preset reference sensor value or disabling the airbag if the sensor value is less than the reference sensor value.

The method for igniting an airbag of an automobile according to the present invention is a method for igniting a collision sensor and a sealing sensor applied to an airbag ignition algorithm using an inertial sensor (IMU sensor) for measuring an angular speed with respect to a position and a rotation of an automobile, It is possible to ignite the airbag in the event of a vehicle collision using the sensor value measured by the inertial sensor, thereby assuring the safety of the vehicle occupant and securing the reliability of the airbag ignition have.

1 is a flowchart showing a method of igniting an airbag of an automobile according to the present invention.
2 is a flowchart showing a first airbag algorithm among the airbag ignition methods of the automobile shown in Fig.
3 is a flowchart showing a second airbag algorithm in the airbag ignition method of the vehicle shown in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, the preferred embodiments of the present invention will be described below, but it is needless to say that the technical idea of the present invention is not limited thereto and can be variously modified by those skilled in the art.

FIG. 1 is a flowchart showing a method of igniting an airbag of an automobile according to the present invention, FIG. 2 is a flowchart showing a first airbag algorithm of an automobile airbag ignition method shown in FIG. 1, and FIG. 3 is a flowchart showing an airbag ignition method 2 is a flowchart showing a second airbag algorithm.

Referring to FIG. 1, an apparatus for controlling an airbag of an automobile determines whether a collision detection sensor operates normally in a vehicle collision (S110). If the collision detection sensor is in a normal operation, If the shaking sensor is in a normal operation, a second airbag algorithm is applied. If the shaking sensor does not operate normally, it is determined whether the inertial sensor is operating normally (S130).

That is, a method of igniting an airbag in an automobile is performed in an airbag control device (ACU) for deployment of an airbag provided in an automobile, that is, for ignition of an airbag.

Here, the airbag control device may be included in the airbag control device or may be provided outside the airbag control device, and may detect the collision based on the sensor value of the collision detection sensor that measures the x- It is possible to confirm whether or not the sensor operates normally.

At this time, if the collision detection sensor is in a normal operation, the airbag control device is included in the airbag control device or is provided outside the airbag control device, so that the sensor value of the shaking sensor for measuring the y- And confirms whether the shifting sensor operates normally.

That is, when the sensor value input from the collision detection sensor and the shifting sensor and the sensor value input from the front impact sensor are within an error range, the collision detection sensor and the shifting sensor perform normal operation .

Here, the airbag control device can determine whether the airbag is ignited by executing the set second airbag algorithm if the shaking sensor is in a normal operation, and a detailed description thereof will be described with reference to FIG.

At this time, the airbag control device determines whether the inertial sensor is operating normally if the shaking sensor does not operate normally, and performs a first airbag algorithm if the inertial sensor is in a normal operation. .

After the step S110, if the collision detection sensor does not operate normally, the airbag controller of the vehicle determines whether the clearing sensor operates normally or not (S140). If the clearing sensor is operating normally, If the shaking sensor does not operate normally, it is determined whether the inertial sensor operates normally (S150).

That is, if the collision detection sensor is not operated normally, the airbag control device checks whether the safing sensor operates normally or not, and if the safing sensor operates normally, it determines whether the inertial sensor operates normally, The first airbag algorithm, which is set if it is a normal operation, will be described in detail with reference to FIG.

If the inertial sensor does not operate normally, the shaking sensor does not operate normally, or the inertial sensor does not operate normally in steps S130, S140, and S150, The algorithm can be stopped (S160).

Referring to FIG. 2, when the first airbag algorithm is executed, when the collision detection sensor or the shaping sensor is in a normal operation (S210), the airbag control device determines that the collision detection sensor The first sensor value is obtained (S220), and the second sensor value measured by the inertia sensor is acquired at the set second time interval (S230).

That is, the airbag control device acquires the first sensor value measured by the collision detection sensor or the clearing sensor at a first predetermined time interval when the collision detection sensor operates normally, or when the clearing sensor operates normally.

Here, the first sensor value is a sensor value measured by the normal operation of either the collision detection sensor or the clearing sensor.

At this time, the airbag controller can acquire the second sensor value measured by the inertia sensor at the set second time interval.

Wherein the first time interval is from 1.5 times to 2 times the second time interval or the first time interval is from 400 us to 500 us and the second time interval is from 150 us to 250 us .

That is, since the inertial sensor is not applied to the airbag algorithm in comparison with the collision detection sensor or the safing sensor, the airbag control device may be configured to detect the collision detection sensor or the safing sensor in order to increase stability and reliability of the second sensor value, The second sensor value may be acquired at the second time interval shorter than the first sensor value obtained at the first time interval by the sensor, thereby improving the reliability and stability of the airbag ignition.

In addition, the airbag control device may apply the second sensor value, which is currently obtained, and the average value of the second sensor value acquired previously, as the second sensor value, but is not limited thereto.

(S230), the airbag controller determines whether the first sensor value is greater than or equal to a first reference sensor value and the second sensor value is greater than or equal to a second reference sensor value (S240) If the sensor value is equal to or greater than the first and second reference sensor values, the airbag is ignited (S250). If any one of the first and second sensor values is less than the first and second reference sensor values, the airbag is ignited (S260).

That is, the airbag controller determines whether the first sensor value is greater than or equal to the first reference sensor value and the second sensor value is greater than or equal to the second reference sensor value.

In other words, if the first sensor value is a value measured by the collision detection sensor, the airbag control device applies the reference sensor value set for the collision detection sensor to the first reference sensor value, If the first sensor value is a value measured by the clearing sensor, the reference sensor value set for the clearing sensor is applied as the first reference sensor value to determine whether the first sensor value is equal to or greater than the first reference sensor value.

If the collision detection sensor operates normally and the safing sensor does not operate normally, the airbag control device may change the reference sensor value from 1.1 to 1.2 times the second sensor value and the reference sensor value set for the clearing sensor, The second sensor value and the second sensor value are set to be equal to or greater than the second reference sensor value, and when the shifting sensor operates normally and the collision detection sensor does not operate normally, The second reference sensor value is 1.1 to 1.2 times the reference sensor value to determine whether the second reference sensor value is greater than or equal to the second reference sensor value.

Accordingly, the airbag control device ignites the airbag if both of the first and second sensor values are equal to or greater than the first and second reference sensor values, and if any one of the first and second sensor values is the first, If it is less than the reference sensor value, the airbag can be ignited.

Referring to FIG. 3, when the second airbag algorithm is executed, when the collision detection sensor and the shaping sensor all operate normally, the airbag control device calculates the sensor value measured from the collision detection sensor and the shaping sensor at a first time interval If the sensor value is equal to or greater than the reference sensor value (S330), the airbag is ignited (S330). If the sensor value is less than the reference sensor value The airbag is ignited (S340).

That is, the airbag control device executes the second airbag algorithm when both the collision detection sensor and the sealing sensor operate normally.

At this time, the airbag control device obtains sensor values measured from the collision detection sensor and the shaping sensor at a first time interval, i.e., the time interval described in Fig. 2, from each of the collision detection sensor and the shaping sensor, The collision detection sensor, and the clearing sensor, respectively.

Thereafter, the airbag control device ignites the airbag if the sensor value is equal to or greater than the reference sensor value, and ignores the airbag if the sensor value is less than the reference sensor value.

It is to be understood that the present invention is not limited to these embodiments, and all elements constituting the embodiment of the present invention described above are described as being combined or operated in one operation. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them.

Furthermore, all terms including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined in the Detailed Description. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

It will be apparent to those skilled in the art that various modifications, substitutions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (10)

Determining whether at least one of the collision detection sensor and the clearing sensor is a normal operation;
Executing a first airbag ignition algorithm if either the collision detection sensor and the sealing sensor are normal, or if the collision detection sensor and the sealing sensor are normal, executing a second airbag ignition algorithm;
Obtaining a first sensor value measured at one of the collision detection sensor and the shifting sensor and a second sensor value measured at the inertial sensor if the inertial sensor is in normal operation during execution of the first airbag algorithm; And
And igniting the airbag if the first sensor value meets a set first sensor reference value and the second sensor value meets a set second sensor reference value. The method according to claim 1,
Wherein,
Wherein the collision detection sensor and the shifting sensor detect that the collision detection sensor and the shifting sensor are operating normally when the sensor value input from the collision detection sensor and the shifting sensor and the sensor value input from the front impact sensor are within an error range, Way. The method according to claim 1,
And stopping the airbag ignition algorithm if the collision detection sensor and the shaper sensor do not operate normally. The method according to claim 1,
The acquiring step includes:
Determining whether a sensor value measured by the inertial sensor and a sensor value inputted from a front impact sensor are within an error range; And
And if the sensor value is within the error range, confirming the normal operation of the inertial sensor and acquiring the first sensor value as a first time interval and the second sensor value as a second time interval Of airbags. 5. The method of claim 4,
The acquiring step includes:
Further comprising: if the sensor value is not within the error range, confirming that the inertial sensor is not operating normally and stopping the airbag ignition algorithm. 5. The method of claim 4,
Wherein the first time interval comprises:
Wherein the second time interval is 1.5 to 2 times the second time interval. 5. The method of claim 4,
Wherein the first time interval comprises:
400 us to 500 us,
Wherein the second time interval comprises:
A method for ignition of an airbag in an automobile having an acceleration of 150 to 250 us. 5. The method of claim 4,
Wherein the ignition step comprises:
Determining whether the first sensor value is the first reference sensor value and the second sensor value comparing the second reference sensor value and whether the first and second sensor values are equal to or greater than the first reference sensor value ;
The airbag is ignited if the first and second sensor values are equal to or greater than the first and second reference sensor values or if at least one of the first and second sensor values is less than the first reference sensor value, The airbag igniting method comprising the steps of: 9. The method of claim 8,
The second reference sensor value is a value
Wherein the reference sensor value of the collision detection sensor and the shifting sensor does not operate normally. The method according to claim 1,
When the second airbag ignition algorithm is executed, acquiring sensor values measured at the collision detection sensor and the shaping sensor at a third time interval;
And igniting the airbag if the sensor value measured by the collision sensor and the clearing sensor is greater than or equal to a preset reference sensor value or disabling the airbag if the sensor value is below the reference sensor value A method of igniting an airbag in a vehicle.
KR20130122859A 2013-10-15 2013-10-15 Air Bag control method of automobile KR20150043886A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111332241A (en) * 2020-02-24 2020-06-26 广汽蔚来新能源汽车科技有限公司 Vehicle airbag control method, system, device and computer equipment
US11084441B2 (en) 2017-01-25 2021-08-10 Hyundai Motor Company Vehicle airbag firing control system and airbag firing control method using the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11084441B2 (en) 2017-01-25 2021-08-10 Hyundai Motor Company Vehicle airbag firing control system and airbag firing control method using the same
CN111332241A (en) * 2020-02-24 2020-06-26 广汽蔚来新能源汽车科技有限公司 Vehicle airbag control method, system, device and computer equipment
CN111332241B (en) * 2020-02-24 2021-07-27 合创汽车科技有限公司 Vehicle airbag control method, system, device and computer equipment

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