KR20120038655A - Apparatus for controling airbag and method thereof - Google Patents

Apparatus for controling airbag and method thereof Download PDF

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Publication number
KR20120038655A
KR20120038655A KR1020100100215A KR20100100215A KR20120038655A KR 20120038655 A KR20120038655 A KR 20120038655A KR 1020100100215 A KR1020100100215 A KR 1020100100215A KR 20100100215 A KR20100100215 A KR 20100100215A KR 20120038655 A KR20120038655 A KR 20120038655A
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KR
South Korea
Prior art keywords
collision
sensor
vehicle
control unit
airbag
Prior art date
Application number
KR1020100100215A
Other languages
Korean (ko)
Inventor
이승우
최형호
Original Assignee
현대자동차주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to KR1020100100215A priority Critical patent/KR20120038655A/en
Publication of KR20120038655A publication Critical patent/KR20120038655A/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
    • 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
    • B60R21/015—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 the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512—Passenger detection systems
    • 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
    • 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
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/232—Curtain-type airbags deploying mainly in a vertical direction from their top edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/48—Control systems, alarms, or interlock systems, for the correct application of the belt or harness
    • 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
    • B60R21/01—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
    • B60R2021/01252—Devices other than bags
    • B60R2021/01265—Seat belts
    • 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
    • B60R2021/01315—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 monitoring occupant displacement
    • 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
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R2021/23107—Inflatable members characterised by their shape, construction or spatial configuration the bag being integrated in a multi-bag system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/48—Control systems, alarms, or interlock systems, for the correct application of the belt or harness
    • B60R2022/4808—Sensing means arrangements therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Air Bags (AREA)

Abstract

PURPOSE: Vehicle airbag control device and method are provided to prevent the errors of collision determination since two control units independently determine a head-on collision and a side collision. CONSTITUTION: A vehicle airbag control device comprises a state sensor(110), a head-on collision sensor(210), a front control unit(220), a side collision sensor(310), and a side control unit(320). The state sensor comprises a seatbelt wearing sensor, a seat track position sensor, and a passenger identifying sensor. After determining a head-on collision by receiving signals related to the head-on collision from the state sensor and the head-on collision sensor, the front control unit outputs safety operation signals to protect the passenger from the front collision of the vehicle to a front safety device(230).

Description

Vehicle airbag control device and control method {APPARATUS FOR CONTROLING AIRBAG AND METHOD THEREOF}

The present invention relates to a vehicle airbag control device, and more particularly to a vehicle airbag control device and a control method that separates the control of the front safety device for the frontal collision and the control of the side safety device for the side collision.

Recently, as the number of accidents caused by the increase of vehicles has become frequent, the performance regulation of automobiles on collisions, the merchandise, and legal regulations on them have been strengthened day by day. In particular, due to the increasing legal requirements of each country in the safety field of passengers and increasing consumer's desire for vehicle safety, seat belts and airbag systems are recognized as essential devices for automobiles. It can also be a representative reference data.

As a result, automobile companies in various countries are conducting a lot of research to improve the performance of seat belts and airbags in the event of a crash.As a result, various types of safety devices are provided to improve the protection performance of the occupants. Is being added to.

However, in order to install these various types of safety devices in a car, the capacity of the control unit for controlling these safety devices must also be increased. In order to develop a control unit having a large capacity, a large amount of research costs and considerable time are required to develop them. The required problem has arisen.

In order to solve this problem, conventionally, a method of controlling a plurality of front and side safety devices and a plurality of sensors using two conventional control units has been proposed.

For example, as shown in FIG. 1, the conventional airbag control apparatus includes a front collision sensor 11 that detects a frontal collision of a vehicle, a side collision sensor 12 that detects a side collision of a vehicle, a seat and a passenger's position. Failure of the state detection sensor 13 for detecting a state, the first airbag control unit 20a and the second airbag control unit 20b for determining whether the airbag is deployed or not from the signals applied from these sensors, and the airbag safety device Airbag status output device 21 to warn of this, and the front safety device 31 to protect the passenger from a frontal collision by receiving the operation signal from the first airbag control unit 20a or the second airbag control unit 20b and The side safety device 32 receives an operation signal from the first airbag control unit 20a or the second airbag control unit 20b to protect the passenger from side collision.

However, in the prior art, when the first airbag control unit 20a and the second airbag control unit 20b are used at the same time, a large number of wire harness circuits are connected to connect the respective sensors and safety devices to these control units. Is accompanied by a disadvantage in cost and quality, and an error in which the first airbag control unit 20a and the second airbag control unit 20b determine different collision determinations for the same collision signal may occur. Some of the safety devices were inoperative.

In addition, in order to solve the problems of the prior art, the airbag is controlled by separating the control unit into a control unit for determining only a collision from a signal detected by a sensor and a control unit for controlling only a safety device according to the collision determination. Some suggestions have been made.

For example, as shown in FIG. 2, the conventional airbag control apparatus includes a front collision sensor 11 for detecting a frontal collision of the vehicle, a side collision sensor 12 for detecting a side collision of the vehicle, a seat and a passenger A state sensor 13 for detecting a position state, a main air bag control unit 20a 'that determines only the deployment of an air bag from signals applied from these sensors, and a main air bag control unit 20a' to control only safety devices. According to the judgment result of the sub-airbag control unit 20b 'to apply an operation signal, the airbag status output device 21 to warn of failure of the airbag safety device, and the operation signal from the sub-airbag control unit 20b'. Front safety device 31, which is authorized to protect passengers from frontal collision, and side safety that protects passengers from side collision by receiving an operating signal from sub airbag control unit 20b '. It consists of the value (32).

However, in the prior art, the main airbag control unit 20a 'determines whether the airbag is deployed, and accordingly, the sub-airbag control unit 20b' applies an operation signal to the front safety device 31 and the side surface. Since the safety device 32 is operated, there is a problem that the deployment time of the airbag is delayed in this process. The delay of the deployment time is very short, so there is no problem in general parts, but even a very short deployment time may cause serious injury to the occupant due to the characteristics of the vehicle safety device.

An object of the present invention for solving this problem is to provide a vehicle airbag control device and a control method that can effectively cope with securing the capacity of the necessary control unit due to the addition of a safety device for protecting the occupant from a vehicle collision.

In order to achieve the above object, the airbag control apparatus according to the present invention includes a seat belt wearing sensor for detecting wearing of the seat belt and a seat track position sensor for detecting a moving state of the seat, and a passenger identification for detecting seating of the occupant of the seat. A state detection sensor including a sensor, a front collision sensor for detecting a front collision of the vehicle, and the front sensor is judged whether the front collision is received by receiving a signal related to a front collision from the state sensor and the front collision sensor, The front control unit outputs a safety operation signal for protecting the occupant to the front safety device, a side collision sensor for detecting a side collision of the vehicle, and a signal related to a side collision of the vehicle from the state sensor and the side collision sensor. To determine whether or not a side impact and then protect the occupant from a side collision Include side control unit that outputs an operation signal to a safety side safety.

Preferably, the front control unit and the side control unit determines whether the front safety device is abnormal or the safety of the side safety device, respectively to warn the outside through the airbag status output device.

Preferably, the front safety device includes a driver's seat and a passenger seat airbag module, a roof airbag module, a pretensioner seat belt module, a knee airbag module, and an anchor pretensioner module.

Preferably, the side safety device includes a side airbag module, a curtain airbag module and a side center front / rear airbag module.

The airbag control method according to the present invention includes detecting the occupant's state information to detect whether the seat belt is worn, the movement state of the seat, and whether the occupant is seated on the seat, and detecting a frontal collision of the vehicle to detect a front collision signal. When the front collision detection step to be applied, and the status information of the occupant and the front collision signal is applied to the front control unit, it is determined whether the front collision or not, the front safety operation signal for protecting the occupant from the front collision to the front safety device A collision determination step, a side collision detection step of detecting a side collision of the vehicle and applying a side collision signal, and when the passenger's state information and a side collision signal are applied to the side control unit, the side collision is determined to determine whether a side collision Front collision determination stage to output side safety operation signals to side safety devices to protect occupants It includes.

According to the present invention, the following remarkable effects can be realized.

First, the present invention can secure the capacity of the control unit comparable to the large-capacity control unit without newly developing a large-capacity control unit, thereby reducing the research cost and time generated when developing the large-capacity control unit, and the proven high quality There is an advantage that the reliability can be secured.

Second, according to the present invention, two different control units each independently proceed with a collision determination related to a frontal collision and a collision determination related to a side collision, thereby providing two conventional control units (first airbag control unit and second airbag control unit). In the case of controlling both front and side safety devices at the same time, there is an advantage that each control unit can prevent an error that determines a different collision decision.

Third, according to the present invention, two different control units directly control the front safety device related to the frontal collision and the side safety device related to the side collision, respectively, so that two different control units (main airbag control unit, sub-conventionally connected) are conventionally connected. In the case of controlling the safety device through the airbag control unit, it is possible to prevent the problem that the deployment time of the airbag is delayed.

1 is a block diagram showing a vehicle airbag control apparatus according to an example of the prior art.
Figure 2 is a block diagram showing a vehicle airbag control device according to another example of the prior art.
Figure 3 is a block diagram showing a vehicle airbag control apparatus according to the present invention.

First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different 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.

Embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 3, the airbag control apparatus according to the present invention includes two different control units (front control unit and side control unit) that independently determine a collision determination related to a frontal collision and a collision determination related to a side collision. Through, the front safety device 230 and the side safety device 330 related to the side collision associated with the front collision can be controlled directly.

Specifically, the airbag control device is a state sensor 110, the front collision sensor 210, the front control unit 220, the side collision sensor 310, the side control unit 320, the airbag state output device 120 , Front safety device 230 and side safety device 330.

The state sensor 110 includes a seat belt wearing sensor, a seat track position sensor, and a passenger identification sensor. Here, the seat belt wearing sensor detects whether the seat belt is worn by a passenger seated in the driver's seat or the passenger seat or the rear seat, and the seat track position sensor detects the inflation pressure of the front airbag according to the position of the driver's seat or the passenger seat before or after the vehicle. In order to be adjusted, the movement position of the driver's seat or the passenger seat is sensed, and the occupant identification sensor is installed in the driver's seat or the passenger seat or the rear seat to detect whether the passenger is seated on the seat.

The front collision sensor 210 is installed at the front side of the vehicle such as the front side member or the radiator surfer upper member to detect a frontal collision caused from the front of the vehicle, and the side collision sensor 310 is the side surface of the vehicle such as the side panel. It is installed on the side to detect the side collision caused from the side of the vehicle. Since the front collision sensor 210 and the side collision sensor 310 have the same configuration as the normal front and side collision sensors for collision detection of the vehicle, detailed description thereof will be omitted.

However, the front collision sensor 210 according to the present embodiment is electrically connected only to the front control unit 220 to apply a collision signal generated due to the front collision to the front control unit 220. And the side impact sensor 310 is electrically connected only to the side control unit 320, and applies a collision signal generated by the side collision to the side control unit 320.

The front control unit 220 receives a signal related to a front collision of the vehicle from the state sensor 110 and the front collision sensor 210, and determines whether the front collision of the vehicle is performed using the received signal. For example, when the front collision signal is received from the front collision sensor 210, it is determined whether the deceleration value due to the frontal collision is greater than or equal to a predetermined prescribed value, and if the deceleration value is greater than the predetermined prescribed value, safety for protecting the occupant from the frontal collision. The operation signal is applied to the front safety device (230).

In this case, the front control unit 220 properly controls the operation of the front safety device 230 in consideration of the positional information on the occupant provided by the state sensor 110. For example, the seat is not seated without operating the air bag, and when the seat is moved to the front of the vehicle so that the inflation pressure of the air bag is reduced.

The front control unit 220 checks whether the front safety device 230 is normally abnormal in real time, and when an error occurs in various modules of the front safety device 230, the airbag state output device such as an airbag warning light ( 120) to alert the outside.

The side control unit 320 receives a signal related to the side collision of the vehicle from the state sensor 110 and the side collision sensor 310 and transmits a safety operation signal to the side safety device 330 to protect the occupant from the side collision of the vehicle. Output That is, when the side control unit 320 receives the side collision signal from the side collision sensor 310, it is determined whether the deceleration value due to the side collision is more than a predetermined prescribed value, and if the deceleration value is greater than the predetermined prescribed value, the side collision A safety actuation signal for protecting the occupant from the side is applied to the side safety device (330).

The side control unit 320 checks the abnormality of the usual side safety device 330 in real time, if an error occurs in the module of the side safety device 330, it is through the airbag state output device 120 You can warn the outside.

The front safety device 230 receives a safe operation signal from the front control unit 220 to protect the occupant from the front collision. To this end, the front safety device 230 may be composed of a driver's seat and a passenger seat airbag module, a roof airbag module, a pretensioner seat belt module, a knee airbag module and an anchor pretensioner module.

The side safety device 330 receives a safe operation signal from the side control unit 320 to protect the occupant from the side collision. The side safety device 330 may include a side airbag module, a curtain airbag module, and a side center front / rear airbag module.

On the other hand, the airbag control method according to the present invention includes a passenger's state information detection step, front collision detection step, front collision determination step, side collision detection step and front collision determination step.

The state information detecting step detects the seat belt wearing through the seat belt wearing sensor, detects the movement state of the seat through the seat track position sensor, and detects whether the seat of the occupant is seated by the occupant identification sensor.

The front collision detecting step detects whether the vehicle is in front of the vehicle through the front collision sensor 210 and applies a front collision signal to the front control unit 220.

In the front collision determination step, when the passenger's state information is applied from the state sensor 110 and the front collision signal is applied from the front collision sensor 210, the front collision determination is performed. Output to the front safety device (230). In this case, the front safety device 230 protects the occupant from the front collision through the operation of the driver's seat and the passenger seat airbag module, the loop airbag module, the pretensioner seat belt module, the knee airbag module and the anchor pretensioner module.

The side collision detection step detects a side collision of the vehicle through the side collision sensor 310 and applies a side collision signal to the side control unit 320.

In the side collision determination step, when state information of the occupant is applied from the state sensor 110 and a side collision signal is applied from the side collision sensor 310, the side safety operation signal 330 is determined by determining whether the side collision occurs. Output to. At this time, the side safety device 330 protects the occupant from the side collision through the operation of the side airbag module, curtain airbag module and side center front / rear airbag module.

Although the present invention has been described in detail using the preferred embodiments, the scope of the present invention is not limited to the specific embodiments, and should be interpreted by the appended claims. In addition, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

110: state detection sensor 120: airbag status output device
210: front collision sensor 220: front control unit
310: side collision sensor 320: side control unit

Claims (5)

A state detection sensor 110 including a seat belt wearing sensor for detecting wearing of the seat belt, a seat track position sensor for detecting a moving state of the seat, and a passenger identification sensor for detecting whether a seat is seated by the occupant;
A front collision sensor 210 for detecting a front collision of the vehicle;
After receiving the signals related to the front collision from the state sensor 110 and the front collision sensor 210 to determine whether or not the front collision, a safety operation signal for protecting the occupant from the front vehicle collision to the front safety device 230 A front control unit 220 for outputting;
A side collision sensor 310 for detecting a side collision of the vehicle; And
After receiving the signals related to the side collision of the vehicle from the state sensor 110 and the side collision sensor 310 to determine whether the side collision, safety operation signal for protecting the occupant from the side collision of the vehicle to the side safety device 330 Vehicle airbag control device comprising a side control unit 320 for outputting. The method according to claim 1,
The front control unit 220 and the side control unit 320 determines whether the front safety device 230 is abnormal and the side safety device 330 is abnormal, respectively, through the airbag state output device 120. Vehicle airbag control device, characterized in that for warning. The method according to claim 2,
The front safety device 230 is a vehicle airbag control device comprising a driver seat and passenger seat airbag module, a roof airbag module, a pretensioner seat belt module, a knee airbag module and an anchor pretensioner module. The method according to claim 2,
The side safety device (330) is a vehicle airbag control device comprising a side airbag module, curtain airbag module and side center front / rear airbag module. Detecting status information of the passenger to detect whether the seat belt is worn, the movement state of the seat, and whether the passenger is seated on the seat;
A front collision detection step of sensing a front collision of the vehicle and applying a front collision signal;
A front collision determination step of determining whether a front collision occurs and outputting a front safety operation signal for protecting the occupant from a front collision to the front safety device when the driver's status information and the front collision signal are applied to the front control unit;
A side collision detection step of detecting a side collision of the vehicle and applying a side collision signal;
When the passenger's status information and the side collision signal is applied to the side control unit, the front collision determination step of outputting the side safety operation signal for protecting the occupant from the side collision by determining whether the side collision to the side safety device; Vehicle airbag control method.
KR1020100100215A 2010-10-14 2010-10-14 Apparatus for controling airbag and method thereof KR20120038655A (en)

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KR1020100100215A KR20120038655A (en) 2010-10-14 2010-10-14 Apparatus for controling airbag and method thereof

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9463760B2 (en) 2014-11-12 2016-10-11 Hyundai Motor Company Method and system for protecting occupants in vehicle
KR20190071507A (en) * 2017-12-14 2019-06-24 현대모비스 주식회사 Air bag device for vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9463760B2 (en) 2014-11-12 2016-10-11 Hyundai Motor Company Method and system for protecting occupants in vehicle
KR20190071507A (en) * 2017-12-14 2019-06-24 현대모비스 주식회사 Air bag device for vehicle

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