KR20140038187A - Air bag sensor module installed by adhesive method - Google Patents

Abstract

The present invention relates to an airbag sensor module installed by an adhesive method to detect the collision of a vehicle, impact applied to the vehicle, and the deformation of the vehicle in order to determine whether to inflate an airbag or not. According to an embodiment of the present invention, the airbag sensor module installed by an adhesive method includes a main base board mounted on the vehicle using an adhesive; and a collision detection sensor part on the main base board to detect the collision of the vehicle. [Reference numerals] (122) Strain sensor; (124) Collision detection sensor; (126) Microprocessor; (130) Communication unit; (140) Power unit

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an air bag sensor module,

The present invention relates to an airbag sensor module mounted in an adhesive manner for detecting a collision during a vehicle collision and detecting an impact amount and a deformation amount for determining whether to deploy an airbag.

Recently, as interest in collision safety of vehicles has increased, the application of the airbag system has been expanded.

The airbag system as described above is a device that is deployed during a vehicle collision to protect the occupants inside the vehicle.

The airbag includes a sensor module capable of detecting a collision of the vehicle, a control unit for receiving the detection signal of the sensor module and determining whether the airbag is deployed according to the intensity of the signal, and an airbag deployed according to the signal of the control unit .

The sensor module is generally made of a collision sensor and is equipped with a sensor module in the main collision prediction portion of the vehicle body, and is provided with an air bag in the main portion inside the space in which the passenger boards.

Further, the control unit may be integrated into an ECU that controls an engine, a transmission, a brake, and the like of the vehicle.

Therefore, when the vehicle collides, the impact is transmitted to the sensor module, and the control unit determines the amount of impact measured by the sensor module to determine whether to deploy the airbag to deploy the airbag.

However, the conventional airbag system as described above has the following problems.

First, the impact sensor of the conventional airbag system is fixed to the vehicle body with a bolt or the like as disclosed in the published Utility Model No. 20-1999-0024432, which requires a separate additional process for assembling the vehicle body, There is a problem in that it is complicated.

Secondly, since the impact sensor of the conventional airbag system is fixed to the vehicle body with bolts or the like, there is a possibility that a malfunction may occur when the bolt is tightened due to continuous vibration or external force due to running of the vehicle.

Third, the conventional airbag system senses whether or not the airbag deployment is detected by using a collision sensor. Such a collision sensor is configured to detect that a relatively large impact must be directly applied to prevent malfunction of the airbag. Accordingly, when an air bag is to be deployed, such as when an impact is applied to a portion where the collision sensor is not provided or the impact amount is small but the deformation amount of the vehicle body is large, it may occur.

Fourthly, the conventional airbag system connects the collision sensor and the ECU of the vehicle body by wire, and may require an additional process for such connection work, and there is a risk of malfunction if a wiring defect occurs due to the aging of the vehicle.

Public utility model 20-1999-0024432 Public utility model 20-1998-0048844

The present invention is to solve the above problems, an object of the present invention is to simplify the production process, there is no fear of loosening the fixing, there is an airbag sensor module mounted in an adhesive method that can more accurately detect the collision detection Providing is a challenge.

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 solve the above problems, according to an embodiment of the present invention, formed on the main substrate and the main substrate mounted in an adhesive manner to the vehicle body, and comprises a collision detection sensor unit for detecting whether or not the collision of the vehicle body An airbag sensor module mounted in an adhesive manner may be disclosed.

The main board may be made of a flexible printed circuit board having flexibility.

And a microprocessor for calculating a deformation amount of the vehicle body as a numerical value measured by the strain sensor.

And a communication unit for transmitting the measured data from the collision detection sensor unit to a control unit for controlling whether the vehicle body deploys the airbag.

The communication unit may be configured to transmit to the control unit as wireless communication.

A power supply unit for supplying power to the collision detection sensor unit and the communication unit may be further provided.

The power supply unit may include a battery for storing electric power.

The power supply unit may be configured to generate electric power.

The power supply unit may include a vibration generator that generates electric power by a vibration generated as the vehicle travels.

Also, the collision detection sensor unit may include an impact sensor for detecting an impact applied to the vehicle body.

Also, the microprocessor of the collision detection sensor unit may be configured to calculate an impact amount of the vehicle body as a numerical value measured by the impact detection sensor.

According to the airbag sensor module mounted in the adhesive method of the present invention has the following effects.

First, since the vehicle body is attached to the vehicle body in an adhesive manner, the manufacturing process can be simplified because it can be simply integrated into the car body manufacturing process without requiring additional processes such as bolting.

Second, since the adhesive method is used instead of the bolt coupling to mount the airbag sensor module, there is no fear that the airbag sensor module may be loosened even if external force such as vibration is applied for a long time.

Third, since the impact amount and the deformation amount are considered together to determine whether the airbag is deployed in the vehicle body, it is possible to configure the airbag to operate when a certain amount of deformation is detected even when the impact is not hitting the airbag sensor module accurately. can do.

Fourth, the airbag sensor module and the control unit for determining whether to deploy the airbag can be made to communicate wirelessly, so no additional wiring is required, so that the wiring process is not necessary, the production process can be shortened, and there is a fear of malfunction due to aging of the wiring. none.

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.

The foregoing summary, as well as the detailed description of the preferred embodiments of the present application set forth below, may be better understood when read in conjunction with the appended drawings. For the purpose of illustrating the invention, there are shown preferred embodiments in the figures. It should be understood, however, that this application is not limited to the precise arrangements and instrumentalities shown.
1 is a perspective view showing an airbag sensor module according to an embodiment of the present invention mounted on a vehicle body;
2 is a diagram showing a schematic configuration of an airbag sensor module according to the present embodiment;
FIG. 3 is a perspective view showing an example of the strain sensor of FIG. 2; FIG.
Fig. 4 is a plan view showing another example of the strain sensor of Fig. 2; Fig.
5 is a schematic view of the power supply unit of FIG. 2;
FIG. 6 is an enlarged perspective view of a portion where the airbag sensor module of FIG. 1 is mounted.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In describing the present embodiment, the same designations and the same reference numerals are used for the same components, and further description thereof will be omitted.

1, an airbag sensor module (hereinafter referred to as an " airbag sensor module ") to be mounted on the vehicle body 10 of the vehicle according to the embodiment of the present invention have.

At this time, the vehicle can be mounted on the front rain reinforcement 20 and the B-pillar 30 which are generally subjected to the largest impact and deformation when the vehicle collides.

In general, when the front collision of the vehicle occurs, the front impact reinforcement 20 is subjected to the greatest impact and deformation, and at the time of side collision, the maximum impact and deformation of the non-pillar 30 may be applied. Accordingly, the airbag sensor module 100 according to the present embodiment can be mounted on the front rain reinforcement 20 and the non-pillar 30. [

Of course, the mounting point of the airbag sensor module 100 of the present invention is not limited thereto, and a plurality of installation points may be installed in various places.

As shown in FIG. 2, the airbag sensor module 100 may include a main board 110 and a collision sensing unit 120.

The main board 110 may be mounted to the vehicle body 10 in an adhesive manner, and the collision detection sensor unit 120 may be formed on the main board 110.

In this case, the main board 110 may be a Flexible Printed Circuit Board (FPCB) having flexibility so as to be adhered to a vehicle body.

The collision sensing unit 120 may include a strain sensor 122 and a microprocessor 126, as shown in FIG.

The strain sensor 122 is in close contact with the vehicle body 10 and deforms as the vehicle body 10 deforms, and may measure the deformation amount.

The strain sensor 122 may be added to the main substrate 110 or may be formed on the main substrate 110 as shown in FIG. If the strain sensors 122 are arranged in different directions as shown in FIG. 4, the deformation amounts in different directions can be measured.

That is, since the strain sensor 122 is adhered to the vehicle body 10 in an adhesive manner, the deformation amount of the vehicle body 10 can be more accurately measured.

The microprocessor 126 may calculate the deformation amount of the vehicle body 10 as a value measured by the strain sensor 122.

Generally, the strain sensor 122 is configured to output a different resistance value according to the amount of deformation. The microprocessor 126 may be configured to calculate a deformation amount of the vehicle body as a resistance value output from the strain sensor 122 .

More specifically, the greater the amount of deformation in a short time, the greater the risk of the occupant. Therefore, the microprocessor 126 calculates the amount of deformation measured by the strain sensor 122 as a deformation amount per unit time, It can be applied to crystals. That is, it may be made to deploy the airbag when the amount of deformation of a value larger than the value set per unit time or at a predetermined time is measured.

The microprocessor 126 may be provided in the form of a chip and mounted on the main board 110 or may be connected to the main board 110.

On the other hand, the vehicle body 10 may be provided with one or more airbags mounted on the cabin, which is a space on which the passengers ride, and a control unit 40 for controlling whether the airbags are deployed. The control unit may be integrated in an ECU (Electric Control Unit) for controlling an engine or a transmission of a vehicle, or may be provided separately from the ECU.

The data measured by the collision detection sensor unit 120 may be transmitted to the control unit 40 through the communication unit 130.

The communication unit 130 may be wired and transmitted to the control unit 40, but in the present embodiment, the communication unit 130 transmits data measured by the collision detection unit 120 as wireless communication to the control unit (B). It will be described with an example made to transmit to 40).

The communication unit 130 may be made of an RF communication circuit to communicate with the control unit 40. The present invention is not necessarily limited to the configuration of the communication unit 130 is an RF communication circuit, it is also possible to comprise a communication circuit of other methods.

In addition, the collision detection sensor 120 and the power supply unit 140 for supplying power to the communication unit 130 may be further provided.

The power supply unit 140 may be formed of a battery that stores power and supplies the stored power to the collision detection sensor unit and the communication unit.

Alternatively, the power supply unit 140 may generate power to supply the collision detection sensor unit 120 and the communication unit 130. The power supply unit 140 may be configured to generate power using vibration inevitably generated when the vehicle is driven to generate power.

5, the power supply unit 140 includes a piezoelectric element 142 capable of generating power as vibration energy, and a capacitor 144 (not shown) that stores power generated in the piezoelectric element 142. [ : capacitor). Of course, in addition to the piezoelectric element 142 and the capacitor 144 may be made of another configuration.

Therefore, the airbag sensor module 100 wirelessly communicates with the control unit 40 of the vehicle body, and the power required for operation may also be generated by itself so that no separate wiring may be required.

Meanwhile, the collision detection sensor unit 120 may further include not only the strain sensor 122 measuring the deformation of the vehicle body but also the impact sensor 124 detecting the impact of the vehicle body.

That is, by determining not only the amount of deformation of the vehicle body 10 but also the amount of impact applied, the airbag deployment decision can be made more accurately in consideration of the measured amount of deformation data and the amount of impact data.

6, the attachment of the airbag sensor module 100 is performed by an adhesive method. Therefore, a portion of the vehicle body 10 on which the airbag sensor module 100 is mounted may have a groove (32) may be formed.

At this time, the airbag sensor module 100 may be adhered to the airbag sensor module 100 using an adhesive having a very high rigidity.

Therefore, when the airbag sensor module is mounted on the vehicle body, a separate bolt fastening operation is not necessary, and thus, the mounting process may be simplified, and the mounting process of the airbag sensor module 100 may not be separated into a separate process. The production process can be greatly simplified, for example it can be integrated into the production process.

It will be apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. It is obvious to them. Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and the present invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.

10: body 20: front reinforcement
30: B filler 32: Home
40: control unit 100: airbag sensor module
110: main board 120: collision detection sensor
122: strain sensor 124: shock detection sensor
126: Microprocessor 130:
140: power supply unit 142: piezo element
144: Capacitor

Claims (11)

A main board mounted on the vehicle body in an adhesive manner;
A collision detection sensor unit formed on the main substrate and configured to detect whether a vehicle body collides;
Airbag sensor module is mounted by the adhesive method comprising a. The method according to claim 1,
The main board is an airbag sensor module mounted by an adhesive method consisting of a flexible printed circuit board having flexibility. The method according to claim 1,
The collision detection sensor unit,
A strain sensor closely attached to the vehicle body and deformed according to the deformation of the vehicle body and measuring the amount of deformation;
A microprocessor that calculates a deformation amount of the vehicle body as a value measured by the strain sensor;
Airbag sensor module is mounted by the adhesive method comprising a. The method according to claim 1,
An airbag sensor module mounted in an adhesive manner further comprising a communication unit for transmitting data measured by the collision detection unit to a control unit controlling whether the airbag is deployed in the vehicle body; 5. The method of claim 4,
The communication unit is an airbag sensor module mounted in an adhesive manner to transmit to the control unit as wireless communication. 5. The method of claim 4,
Air bag sensor module is mounted in the adhesive method further comprises a power supply for supplying power to the collision detection sensor and the communication unit. The method according to claim 6,
The power supply unit,
An airbag sensor module mounted in an adhesive manner comprising a battery for storing electric power. The method according to claim 6,
The power supply unit,
Airbag sensor module is mounted by the adhesive method made to generate power. 9. The method of claim 8,
The power supply unit,
Airbag sensor module is mounted by the adhesive method comprising a vibration generating device for generating electric power by the vibration generated in accordance with the running of the vehicle. The method of claim 3,
The collision detection sensor unit is airbag sensor module is mounted in the adhesive method is further provided with a shock detection sensor for detecting a shock applied to the vehicle body. 11. The method of claim 10,
The microprocessor of the collision detection sensor unit is configured to calculate the impact amount of the vehicle body as a value measured by the impact detection sensor.

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