KR20070060569A - Passenger air back unfold control method - Google Patents

Abstract

A passenger air bag deployment control method is provided to precisely measure the state of a passenger in order to prevent damage to the passenger caused by a vehicle collision. A passenger air bag deployment control method includes the steps of determining whether a passenger rides on a passenger seat, driving a seat distance measurement sensor and a seat angle measurement sensor, comparing the actually measured distance and angle with a predetermined distance and angle, determining an air bag deployment pressure and time by combining the resultant values, determining a predetermined value in consideration of a collision state, repeatedly driving the seat distance and seat angle measurement sensor, and calculating an average distance value and an average angle value.

Description

Passenger seat airbag deployment control method {PASSENGER AIR BACK UNFOLD CONTROL METHOD}

1 is a passenger seat airbag deployment control flow chart of the present invention

2 is a flow chart for determining the results according to the sheet distance of the present invention

Figure 3 is a flow chart for determining the results according to the sheet angle of the present invention

4 is a data table showing a case of logic values according to the sheet distance and the sheet angle of the present invention.

5 is a data table illustrating a combination of logic values according to a seat distance and a seat angle according to the present invention.

6 is a conventional passenger airbag deployment control flow chart

The present invention relates to a passenger airbag deployment control method, and more particularly, to a method for controlling the airbag deployment after determining the position and angle of the passenger seat when a collision occurs.

As is well known, the car is equipped with an airbag device together with a seat belt as part of the safety device for the occupant in the event of a collision. The airbag device is installed separately in the front seat (driver's seat and passenger seat) and the rear seat in the cabin. It is designed to protect people in each seat from injuries caused by impacts. In recent years, airbag devices that control the tension of the airbag module and seat belt at the same time are widely used. .

Among the airbag devices, the front airbag device installed on the front seat side of the cabin consists of a driver airbag module mounted inside the center of the driver's steering wheel and a passenger airbag module built on the front dashboard of the passenger seat. The airbag modules are connected to each other via a wire harness and an engine control unit installed at the bottom of the center fascia. The engine control unit is connected via a wire harness so as to receive power from a battery installed in the vehicle. It is connected.

The engine control unit has an acceleration / deceleration sensor that detects a change in driving speed of a vehicle while driving, and this acceleration / deceleration sensor detects a change in the degree of acceleration / deceleration in a driving vehicle. When the degree of deceleration is greater than or equal to a certain standard, that is, when it is determined that the driving vehicle has caused a crash accident, the deployment signal is applied to the airbag modules of the driver's seat and the passenger seat.

Accordingly, when the acceleration / deceleration of the vehicle is changed by a certain standard or more during a crash of the vehicle, the acceleration / deceleration sensor of the engine control unit detects this and applies the battery power to the airbag modules of the driver's seat and the passenger seat. The current applied to the inflator of the airbag module ignites the gas generator by sequentially igniting the peony and the ignition agent in the inflator, and the nitrogen gas generated during the combustion of the gas generator is discharged to the outside of the inflator through the diffuser screen. As the airbag is introduced into the airbag, the airbag, which is folded in the pad cover, expands and expands toward the front of the driver and passenger seat while breaking the cutout of the pad cover.

In the conventional airbag system, the deployment control method of the passenger seat airbag apparatus is as shown in FIG. 6, determining the presence of a passenger seat occupant in the event of a collision, operating a distance measuring sensor of the driver seat, measuring distance and setting distance. And comparing the airbag deployment pressure according to the result and determining the airbag deployment time to control the deployment of the passenger seat airbag.

However, the above-described passenger seat airbag deployment control method does not know the exact state of the passenger seat occupant since the seat distance measurement sensor operates only in consideration of the seat distance in determining the passenger seat occupant condition. Even if the seat distance is less than normal, the case where the back of the seat is completely folded backward and the seat back is folded forward is different, but there is a problem of deploying the airbag in the same way.

It is an object of the present invention to provide a passenger seat airbag deployment control method for correcting the above problems and measuring the exact condition of a passenger seat occupant so as to protect from an injury caused by the impact of the passenger during a collision.

In order to achieve the above object, the present invention provides a passenger seat airbag deployment control method, comprising: determining the presence of a passenger occupant during a collision, measuring the seat distance of the passenger seat, and at the same time seat angle of the passenger seat And determining the airbag deployment pressure and the airbag deployment time by combining the results of the measurement determination and the results of the two measurement determination steps.

As shown in FIG. 1, the present invention first determines whether a passenger occupants a passenger when a collision occurs. Subsequently, the sheet distance measuring sensor and the sheet angle measuring sensor are operated.

Next, the measured distance and the measured angle obtained from the sensor are compared with the preset set distance and the set angle.

The airbag deployment pressure and time are then determined by combining the comparison value results. Here, the comparison result result combination is determined by a preset value in consideration of the collision state.

The measurement and determination of the sheet distance and the sheet angle will be described in detail with reference to FIGS. 2 and 3.

First, operate the sheet distance and sheet angle measuring sensor. Subsequently, the measurement is performed at least two times in order to obtain an accurate value for measuring the sheet distance and angle using each sensor, and then the average distance value and the average angle value are calculated.

The calculated average distance value and the average angle value are compared with the predetermined set distance value and the set angle value, and two or more setting values are set to enable accurate situational control.

In FIG. 2 and FIG. 3, three result values may be obtained, for example, having two setting values.

As shown in Fig. 4, the resultant values obtained in this way are each developed in the form of a data table with development pressure and development time.

Subsequently, the airbag deployment pressure and the deployment time are determined and controlled with reference to the data table in which the deployment pressure and the deployment time are determined for each logic value as shown in FIG. 5.

As described above, the present invention can minimize the injuries caused by the collision by controlling the deployment of the airbag in consideration of the exact state of the passenger seat occupant.

Claims (4)

Determining the presence of a passenger occupant in the event of a collision; Measuring and determining the seat distance of the passenger seat; Simultaneously measuring and determining the seat angle of the passenger seat; And determining an airbag deployment pressure and an airbag deployment time by combining the results of the two measurement judgment steps. The method of claim 1, wherein the measuring of the seat distance of the passenger seat is determined by: Operating the seat distance measuring sensor, Comparing the seat distance measuring sensor operation result with at least one predetermined set distance value; Measuring and determining the seat angle of the passenger seat, Operating the seat angle measuring sensor; And comparing and determining the operation result of the seat angle measuring sensor with at least one preset set angle value. The method of claim 2, wherein the actuation of the seat distance measuring sensor comprises calculating an average distance value through at least two measurements. And said average distance value being compared with at least two predetermined set distance values to obtain at least three logic values. 3. The method of claim 2, wherein operating the sheet angle measuring sensor comprises calculating an average angle value through at least two measurements, And determining at least three logic values by comparing the average angle value with at least two predetermined set angle values.

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