KR20110121940A - Passenger Identification Device - Google Patents

Abstract

Even if the conductors are placed on the seat, passengers can not only accurately identify passengers, but also improve sensing sensitivity, identify infants and adults, and minimize the influence of external factors such as mobile phones, moisture, and seat heaters. An identification device is provided.
To this end, the passenger identification device according to an embodiment of the present invention, the first electrode disposed on the seat provided so that the passenger can sit, and is spaced apart from the first electrode and forms an electric field between the first electrode A second electrode, an ammeter for measuring a current value according to a change in the electric field by a passenger sitting on the seat, and the sheet is electrically connected to or connected to the first electrode and / or the second electrode, And a switch operated by the load of the passenger sitting on the seat.

Description

An apparatus for differential passengers

The present invention relates to a passenger identification device, and more particularly to at least one of the first electrode and the second electrode to form an electric field with each other to identify the passenger sitting on the seat, by the load of the passenger sitting on the seat It relates to a passenger identification device to which a switch operated switch is connected.

In general, a vehicle is provided with various safety devices for the safety of the passenger, and one of them includes an airbag that inflate between the vehicle structure and the passenger during a car collision to protect the passenger.

These airbags are deployed in the event of a car crash to protect passengers. For adults, there is no problem, but for infants, children or adults with poor physical conditions, inflated airbags may pose a risk to their lives. There is a possibility.

Therefore, in each country, provisions are made for the actual passenger safety evaluation according to the deployment of airbags.In order to satisfy these regulations, a passenger identification device is provided on the passenger seats to classify passengers seated on the seats. The status and development conditions are different.

The present invention is connected to at least one of the first electrode and the second electrode to form an electric field between each other to identify the passenger sitting on the seat, the switch which is switched by the load of the passenger sitting on the seat is connected, It is an object of the present invention to provide a passenger identification device capable of accurately identifying a passenger even when a conductor is placed.

In addition, by placing both the first electrode and the second electrode on the sheet, the sensing sensitivity is improved, there is no need to install an insulator on the sheet, not only the identification of the infant and adult, but also the mobile phone, moisture, sheet Another object of the present invention is to provide a passenger identification device capable of minimizing the influence of a heater.

Passenger identification device according to an embodiment of the present invention for solving the above problems, the first electrode disposed on the seat provided so that the passenger can sit, and is spaced apart from the first electrode and between the first electrode A second electrode for forming an electric field in the electric field, an ammeter for measuring a current value according to the change of the electric field by a passenger sitting on the seat, and electrically connecting the first electrode and / or the second electrode to the sheet or It is provided to be released, the switch is switched by the load of the passenger sitting on the seat.

Since the passenger identification device according to the present invention is provided with a switch that is operated by a passenger load on the seat so that an electric field is formed between the first electrode and the second electrode only when a load of a predetermined value or more is applied to the seat, Even if a lighter conductor than the passenger is placed on the seat, it can be prevented from misrecognizing it as an adult.

In addition, since both the first electrode and the second electrode are disposed on the sheet, the intensity of the electric field formed between the first electrode and the second electrode can be increased, and the electric field can be prevented from spreading in all directions, so that the sensing sensitivity Is improved and it is not necessary to provide an insulator on the sheet.

In addition, when both the first electrode and the second electrode are disposed on the sheet, since the position at which the electric field is formed is limited to the sheet, the electric field generated from the first electrode and the second electrode may be different from the electromagnetic wave generated from the electronic device. The interference and scattering can be minimized, so that the sensing sensitivity is improved.

In addition, when both the first electrode and the second electrode are disposed on the sheet, the difference between the capacitance value for the infant and the capacitance value for the adult becomes large, so that the distinction between the infant and the adult becomes clear.

In addition, when both the first electrode and the second electrode are disposed on the sheet, even if a mobile phone is placed on the sheet, water is moistened on the sheet, or a sheet heater for heating the sheet is disposed on the sheet. In addition, the influence of such a cell phone, water, and seat heater can be minimized to prevent passenger identification.

In addition, both the upper and lower plates of the passenger sensor sensor is formed in the air inlet communicating with the separation space of the two plates, the shield member for shielding the air outlet of the upper plate is disposed, the passenger sensor is inverted to the left / right seat Each can be installed.

1 is a conceptual diagram showing a main part of a passenger identification device according to a first embodiment of the present invention;
2 is a view showing the passenger identification device shown in FIG.
3 is a block diagram of FIG. 1;
4 is a capacitance graph of passenger identification of a passenger identification device according to a first embodiment of the present invention;
5 is a capacitance graph of the external elements of the passenger identification apparatus according to the first embodiment of the present invention;
6 is an exploded view of the passenger sensor shown in FIG.
7 is a cross-sectional view of the passenger sensor along the line AA of FIG.
8 is a view showing a passenger identification device according to a second embodiment of the present invention;
9 is a cross-sectional view of the passenger sensor along the line BB of FIG.

A passenger identification device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a conceptual view showing the main part of the passenger identification device 100 according to the first embodiment of the present invention, FIG. 2 is a view showing the passenger identification device 100 shown in FIG. 1, FIG. It is a block diagram.

1 to 3, the passenger identification device 100 according to the first embodiment of the present invention is disposed on a seat 10 provided to allow a passenger 1 to sit. Passenger identification device 100 is a passenger detection sensor 50 for detecting a passenger (1) sitting on the seat 10, and whether the seat 10 is vacancies according to a signal transmitted from the passenger detection sensor 50, seat ( 10) includes a control device 40 for identifying whether the passenger 1 sitting in the seat 1 is an infant, child, or 5% female with poor physical condition.

The seat 10 includes a seating portion 12 on which the hip portion of the passenger 1 is placed and a backrest portion 14 supporting the back of the passenger 1.

The passenger identification device 100 may be disposed in the seating portion 12 of the seat 10 or may be disposed in the backrest portion 14. Hereinafter, the passenger identification device 100 is limited to the seating unit 12 of the seat 10, and the seat 10 refers to the seating unit 12.

The passenger sensor 50 may include a first electrode 20 disposed on the seat 10, a second electrode 30 spaced apart from the first electrode 20 on the seat 10, and a seat 10. And a switch 60 disposed at and electrically connected to or disconnected from the first electrode 20 and the second electrode 30, respectively.

The first electrode 20, the second electrode 30, and the switch 60 are enclosed in a film 70 composed of the first film 72 and the second film 74, which will be described later, and the control device 40 is Electrically connected to the switch 60, the passenger identification device 100 according to the present embodiment is modularized, and then installed in the seat 10.

Here, although the first electrode 20, the second electrode 30, and the switch 60 are shown to be encapsulated together in the film 70, this is only illustrated as an example and the first electrode 20. In addition, the second electrode 30 and the switch 60 may be encapsulated in each film 70, and at least one of the first electrode 20, the second electrode 30, and the switch 60 may be a film ( It is also possible to encapsulate the film 70, and it is also possible that the first electrode 20, the second electrode 30, and the switch 60 are not all encapsulated in the film 70.

When the switch 60 is turned on by the load of the passenger 1 sitting on the seat 10, the first electrode 20 receives AC power from the control device 40. In addition, the second electrode 30 is grounded to the vehicle body. Of course, the first electrode 20 may be grounded to the vehicle body, and the second electrode 30 may be disposed to receive AC power from the control device 40. Hereinafter, the first electrode 20 receives AC power from the control device 40 and the second electrode 30 is grounded to the vehicle body.

Meanwhile, although the first electrode 20 and the second electrode 30 have been described as being installed on the seat 10 in the above, the second electrode 30 grounded to the vehicle body is disposed on the vehicle body instead of the seat 10. It is also possible. In this case, the switch 60 may also be electrically connected only to the first electrode 20 disposed on the sheet 10, and the switch 60 may not be connected to the second electrode 30. That is, it is possible if only one of the first electrode 20 and the second electrode 30 is disposed on the seat 10, the switch 60 is the seat so that the switch can be operated by the load of the passenger sitting on the seat 10 It is possible if it is arrange | positioned at 10 and connected to at least any one of the 1st electrode 20 and the 2nd electrode 30. FIG. Hereinafter, both the first electrode 20 and the second electrode 30 are disposed on the sheet 10, and the switch 60 is also electrically connected to the first electrode 20 and the second electrode 30, respectively. It will be described by limiting the arrangement to (10).

When the switch 60 is turned on by the load of the passenger sitting on the seat 10 and AC power is applied to the first electrode 20, the first electrode 20 and the second electrode 30 are positive (+) electrodes. While alternately operating with the negative (-) electrode, an electric field is formed between the first electrode 20 and the second electrode (30).

In general, the intensity of the electric field is inversely proportional to the square of the distance between the first electrode 20 and the second electrode 30 according to Coulomb's law, and thus, the first electrode 20 and the second electrode 30. ) Closer to each other, the greater the strength of the electric field can be improved sensitivity to detect the passenger (1).

Therefore, in the passenger identification device 100 according to the first embodiment of the present invention, since both the first electrode 20 and the second electrode 30 are disposed on the sheet 10, the first electrode 20 and the first electrode 20 are formed. Sensitivity may be improved because the distance between the two electrodes 30 is close.

In addition, the electric field is spread in all directions as the distance between the first electrode 20 and the second electrode 30 increases, so that only a part of the electric field is involved in the detection of the passenger 1, thus the sensing sensitivity may be reduced. Therefore, when the distance between the first electrode 20 and the second electrode 30 is far, the insulator is provided on the sheet 10 so that the electric field does not spread in all directions, the passenger identification device according to the first embodiment of the present invention In the 100, since the first electrode 20 and the second electrode 30 are both disposed close to the sheet 10, such an insulator can be omitted.

In addition, since the electric field formed between the first electrode 20 and the second electrode 30 is limited to the sheet 10, the electric field generated at the first electrode 20 and the second electrode 30 is an electronic device. Scattering sensitivity can be improved by minimizing scattering due to interference with electromagnetic waves generated from the.

The first electrode 20 and the second electrode 30 are preferably arranged on the same plane in order to be disposed close to each other. In the present embodiment, it is shown that the sheet 10 is disposed in parallel with the upper surface of the sheet 10.

Referring to FIG. 3, the control device 40 includes an AC power supply 42 for applying AC power to the first electrode 20, and the first electrode 20 by the passenger 1 sitting on the seat 10. The passenger sitting on the seat 10 based on the ammeter 44 for measuring the current value I according to the electric field change formed between the second electrode 30 and the current value I measured by the ammeter 44. (1) and a control section 46 for identifying.

The current value I depends on the change in the electric field formed between the first electrode 20 and the second electrode 30. That is, the current value I has different values according to the permittivity of the object between the first electrode 20 and the second electrode 30.

Typically, the dielectric constant of air is about 1, the dielectric constant of water is 80, the dielectric constant of moisture (gas) is 1, the dielectric constant of ice is 100, and the dielectric constant of plastics is 2 to 3, each having a different value. Therefore, as shown in Equation 1 below, the electrostatic force between the first electrode 20 and the second electrode 30 depends on the dielectric constant of the object between the first electrode 20 and the second electrode 30. The dose C is different.

[Equation 1]

In Equation 1, C: capacitance, ε: dielectric constant, A: sum of the areas of the first electrode 20 and the second electrode 30, d: the first electrode 20 and the second electrode ( 30) distance between.

The controller 46 may obtain the capacitance C through Equation 2 below using the current value I measured by the ammeter 44.

[Equation 2]

In Equation 2, I: current value measured by the ammeter 44, C: capacitance, V: voltage applied by the AC power supply 42. That is, the current value I measured by the ammeter 44 is the value obtained by differentiating the voltage V applied from the AC power supply 42 as a function of time, and thus the first electrode 20 and the second electrode 30. It is equal to the product of the capacitance (C) in between.

The controller 46 compares the capacitance C calculated using the current value I measured by the ammeter 44 with the capacitance preset in the controller 46.

The capacitance set in advance in the controller 46 is an experimental value, and the values are shown in FIG. 4.

4 is a graph of capacitance for passenger identification of the passenger identification device 100 according to the first embodiment of the present invention.

Referring to FIG. 4, it can be seen that the capacitance C between the first electrode 20 and the second electrode 30 has various values depending on the presence or absence of the passenger 1 and the type of the passenger 1. .

In the case where the seat 10 is a vacancy, the capacitance C between the first electrode 20 and the second electrode 30 is 0 peta farad (Pf), and an infant under 1 year old is sitting. When a child restraint system (CRS) is mounted on the seat 10, when a child sits on the seat 10, when 5% of women with poor physical conditions sit on the seat 10, the seat ( When the 5% female sat in 10), the capacitance C between each of the first electrode 20 and the second electrode 30 was converted into a quantile value.

In detail, when the infant protection device in which the infant 1 year old or young is seated is mounted on the sheet 10, the capacitance C between the first electrode 20 and the second electrode 30 has a value of 5 or less. , When the child is seated on the seat 10 had a value of 31 to 42, 5% female seated on the seat 10 had a value of 37 to 48, 5% on the seat 10 When women sat down, they had a value of 75-100.

As can be seen from the value of the capacitance C between the first electrode 20 and the second electrode 30 according to the passenger 1 sitting on the seat 10, the passenger according to the first embodiment of the present invention. The identification device 100 has a difference A between the adult capacitance and the infant capacitance. That is, the difference between 37, the minimum value of 5% of adults, and 5, the maximum value of infants, are 32. Therefore, since the difference (A) of the value of the capacitance (C) for identifying the infant and adult is distinguished relatively large, the infant and the adult can be clearly identified.

The controller 46 compares the capacitance C calculated using the current value I measured by the ammeter 44 with the capacitance set in the controller 46 shown in FIG. Accordingly, it is possible to identify whether the seat 10 is vacancies, whether the passenger 1 sitting on the seat 10 is an infant 1 year old or younger, a child, or 5% female.

Accordingly, the controller 46 may prevent the airbag from being deployed when the seat 10 is vacant and the passenger 1 sitting on the seat 10 is identified as an infant, child, or 5% female of 1 year or less as described above. Even if it is developed, it can be developed at low pressure.

5 is a capacitance graph of an external element of the passenger identification device 100 according to the first embodiment of the present invention.

5 shows that the capacitance C between the first electrode 20 and the second electrode 30 is 0 peta farad (Pf) when the sheet 10 is vacant, the sheet 10 ), The mobile phone is placed in the seat 10, the seat 10 is moistened with water, or the seat heater for heating the seat 10 is placed inside the seat 10, or 5% female is sitting. When the 5% female is seated with the seat heater disposed on the seat 10, the capacitance C between the first electrode 20 and the second electrode 30 is tested to determine the 100th percentile value. It is the value converted into.

In detail, when the mobile phone is placed on the sheet 10, the capacitance C between the first electrode 20 and the second electrode 30 has a value of 1 or less, and the sheet 10 is moistened with water. It had an approximate value of 37 when it was held, and had a value of 37-48 when 5% female sat while the seat heater was placed inside the seat 10, and the seat heater was placed on the seat 10. When the 5% women sat down, they had a value of 75 ~ 100.

However, when comparing the graphs of FIG. 4 and FIG. 5, the capacitance values shown in FIG. 5 are values included in the capacitance C values preset in the controller 46 shown in FIG. 4. Therefore, even if a mobile phone is placed on the sheet 10, water is wetted on the sheet 10, or a sheet heater is placed on the sheet 10, the capacitances preset in the controller 46 are affected. Not crazy That is, the passenger identification device 100 according to the first embodiment of the present invention can minimize the influence of the mobile phone, moisture, seat heaters. In particular, the capacitance values when the 5% female was seated with the seat heater disposed on the seat 10 had almost the same values as those of the 5% female shown in FIG. 4. Therefore, since the passenger identification device 100 according to the first embodiment of the present invention can minimize the influence of the seat heater, the electric field is formed between the first electrode 20 and the second electrode 30. It is not necessary to install a shield (not shown) between the first electrode 20 and the second electrode 30 and the sheet heater to prevent the impact on the sheet heater.

On the other hand, if the switch 60 is not provided in the passenger sensor 50, the first electrode 20 and the second electrode 30 is directly connected to the control device 40 to form an electric field, If a conductor is placed in (10), it may be mistaken as an adult. That is, when a conductor having a better permittivity (ε) than air is placed on the sheet 10, the capacitance (C) value similar to that of the adult is measured even though the passenger (1) is not seated on the seat (10). There is a risk of misunderstanding. For example, when gimbap packaged in aluminum wrapping paper was placed on the sheet 10, it was found that the adult 10 was misidentified as sitting on the sheet 10.

Accordingly, the present invention operates the switch by the passenger load on the seat 10 such that an electric field is formed between the first electrode 20 and the second electrode 30 only when a load of a predetermined value or more is applied to the seat 10. Since the switch 60 is provided, even if the conductor is placed on the sheet 10 as described above, it is possible to prevent the misidentification of this as an adult.

The switch 60, the first electrode 20, the second electrode 30, and the film 70 related to the switch 60 will be described in detail below.

6 is an exploded view of the passenger sensor 50 shown in Figure 2, Figure 7 is a cross-sectional view of the passenger sensor 50 along the line A-A of FIG. Here, since the first electrode 20 and the second electrode 30 are made of the same structure, only the first electrode 20 is shown and the illustration and description of the second electrode 30 will be omitted.

6 and 7, the first electrode 20 is made of a silver material, printed on the first film 72 to form a first plate 80, and made of silver material so as to face the first electrode 20. The conductive member 22 is printed on the second film 74 to form the second plate 90, and the spacer 85 is disposed between the first plate 80 and the second plate 90. Herein, the first plate 80 means that the sheet 10 is disposed toward the upper side, and the second plate 90 is disposed below the first plate 80 toward the lower side of the sheet 10. it means.

The first film 72 and the second film 74 are made of polyethylene terephthalate (PET), which is a material that can be bent under a load of a passenger sitting on the seat 10.

The conducting member 22 is electrically connected to the control device 40.

The spacer 85 is disposed between the first electrode 20 and the conductive member 22, and a hole 86 is formed at a portion where the first electrode 20 and the conductive member 22 face each other. A space 86 is formed between the first electrode 20 and the conductive member 22. Here, since the space 86 is a space formed by the holes 86 of the spacer 85, the same reference numerals as those of the holes 86 are given.

Therefore, when the passenger 1 is seated on the seat 10, the first electrode 20 and the conducting member 22 are in contact with each other in the separation space 86 by the load of the passenger 1, thereby causing the first The electrode 20 can receive the AC power from the control device 40. Of course, when the seat 10 is vacant or a light object is placed on the seat 10, since the first electrode 20 and the conductive member 22 do not contact each other, AC power is not applied to the first electrode 20. It is natural not to.

In this way, the spacer 85 and the conductive member 22 forming the space 86 between the first electrode 20 and the conductive member 22 are the loads of the passenger 1 sitting on the seat 10. By performing a switch 60 function to operate by the switch, it performs a function to enable or release the AC power to the first electrode (20).

The spacer 85 is formed of a double-sided adhesive member to bond the first plate 80 and the second plate 90. That is, the first electrode 20 and the first film 72 are bonded to one surface of the spacer 85, and the conductive member 22 and the second film 74 are bonded to the other surface of the spacer 85.

Passenger detection sensor 50 of such a structure should be able to freely enter and exit the air filled in the separation space 86 to the outside so that the switch 60 can operate smoothly.

That is, if the separation space 86 is sealed, not only the first electrode 20 and the conductive member 20 are hard to contact each other, but also the air in the separation space 86 expands or contracts according to the temperature change. There is a risk of malfunction of the passenger sensor 50.

Therefore, the air inlet 76 is formed in the second plate 90 to communicate with the separation space 86 so that air can enter and exit the separation space 86. The air inlet 76 may include a first plate 80 disposed toward the upper side of the seat 10 to prevent moisture from penetrating into the separation space 86 when water is spilled on the seat 10. It is preferable that it is not formed on the second plate, but is formed only on the second plate 90 disposed toward the lower side of the sheet 10.

However, due to the lifestyles and traffic laws of each country, the driver's seat and the passenger seat are located in different countries. In other words, there are countries where the driver's seat is on the left and the passenger seat is on the right, while in some countries the driver's seat is on the right and the passenger seat is on the left.

Therefore, the automaker produces two types of symmetrical structures for the driver's seat and the passenger seat, and the driver's seat and the passenger seat are mounted on the vehicle differently depending on each country and exported.

As such, in order to install the passenger sensor 50 in the left / right seat 10 having a structure symmetrical to each other, the passenger sensor 50 should also be installed in a symmetrical structure, the passenger sensor ( When the 50 is separately installed on the left seat 10 and the right seat 10, the cost increase and workability may be complicated.

Therefore, the passenger detection sensor 50 for installation on the left seat 10 and the passenger detection sensor 50 for installation on the right seat 10 are not produced separately, and are inverted so as to be symmetrical to the left and right seats ( There is a need for a passenger sensor 52 that can be installed in each of the 10). This will be described in the second embodiment below.

8 is a view showing a passenger identification device 200 according to a second embodiment of the present invention, Figure 9 is a cross-sectional view of the passenger sensor 52 along the line B-B of FIG. Here, the same reference numerals are given to the same embodiments as those described above, and the description thereof will be omitted, and only differences will be described.

8 and 9, it can be seen that the passenger detection sensor 52 of the passenger identification device 200 according to the second embodiment of the present invention is different from the above-described embodiment.

That is, the air inlet 76 is formed in both the first plate 80 and the second plate 90, and the air inlet 76 formed in the first plate 80 disposed toward the upper side of the sheet 10. A shielding member 78 for shielding is disposed on the first plate 80. Of course, since the first plate 80 is disposed toward the upper side of the seat 10 here, when water is spilled on the seat 10, the water is separated from the passenger sensor 52 through the air inlet 76. The shield member 78 is disposed on the first plate 80 to prevent penetration into the space 86, but if the passenger sensor 52 is installed upside down, the second plate 90 is on the upper side of the seat 10. In this case, the shield member 78 is disposed on the second plate 90 so as to shield the air inlet 76 of the second plate 90 at this time.

As described above, the passenger detection sensor 52 of the passenger identification device 200 according to the second embodiment of the present invention is an air inlet communicating with the separation space 86 in the first plate 80 and the second plate 90. While forming all of the 86, the upper air inlet 76 is shielded through the shielding member 78 to prevent moisture from penetrating into the separation space 86, the lower air inlet 76 is opened as it is By allowing the air to enter and exit the space 86 by leaving it in the state, the passenger sensor 52 is to be turned upside down so as to be installed on the left and right seats 10, respectively.

In the present embodiment, the shielding member 78 is formed of an attachment on which a barcode containing product information of the passenger sensor 52 is printed. As such, since one of the air inlets and outlets 76 may be shielded through an attachment in which a bar code must be attached to the passenger sensor 52 without using a separate member, the production cost may be reduced.

Looking at the operation of the passenger identification device according to an embodiment of the present invention configured as described above with reference to Figs.

First, when the passenger 1 is seated on the seat 10, the switch 60 is turned on by the load of the passenger 1, so that AC power is applied from the AC power source 42 to the first electrode 20. do. Of course, when a conductor lighter than the passenger 1 is placed on the seat 10, the switch 60 remains off and no AC power is applied to the first electrode 20. That is, the switch 60 of the passenger identification device according to the embodiment of the present invention is turned on only when the load of the object sitting on the seat 10 is greater than or equal to a predetermined value, so that when the object sitting on the seat 10 is the passenger 1. Only when the object is lighter than the passenger 1 is placed on the seat 10, the lighter than the passenger 1, when the lighter than the passenger (1) is placed on the seat 10, can be prevented from being mistaken as an adult Will be.

As such, when the switch 60 is turned on by the load of the passenger 1 sitting on the seat 10, the first electrode 20 and the second electrode 30 are connected to the positive electrode and the negative electrode. While alternately operating as, an electric field is formed between the first electrode 20 and the second electrode 30.

Thereafter, the electric field changes as the passenger 1 contacts the electric field, and the change of the current value I according to the electric field change is measured by the ammeter 44.

Thereafter, the controller 46 calculates the capacitance C between the first electrode 20 and the second electrode 30 using the current value I measured by the ammeter 44.

Thereafter, the controller 46 transmits the capacitance C between the first electrode 20 and the second electrode 30 calculated using the current value I measured by the ammeter 44 to the controller 46. Compare with the preset capacitance value. That is, the capacitance value when the seat 10 set in advance in the control unit 46 is vacancies, the capacitance value when the infant protection device in which an infant 1 year old or younger is seated on the seat 10, the sheet 10 It is compared with the capacitance value when a child sits in the seat, the capacitance value when the 5% woman sits on the seat 10, and the capacitance value when the 5% woman sits on the seat 10. FIG.

Thereafter, the controller 46 determines that the capacitance C between the first electrode 20 and the second electrode 30 calculated using the current value I measured by the ammeter 44 is the sheet 10. When the capacity is satisfied, the seat 10 is identified as a vacancy, and when the infant protection device seated by an infant under 1 year old is seated on the seat 10, the seat 10 is satisfied. Infant 1 years old or younger is identified as having a child sitting on the seat 10, and if the capacitance value when the child is seated on the seat 10 is identified, the child is seated on the seat 10, and the seat 10 is 5% female. If the capacitance value when sitting on the cushion or the 5% female sitting on the seat 10 is satisfied, it is identified as the 5% female sitting on the seat 10.

Thereafter, the controller 46 prevents the airbag from being deployed when the seat 10 is vacant and the passenger 1 sitting on the seat 10 is identified as an infant, a child, or a 5% female of 1 year or less. Even if it is developed, it can be developed at low pressure.

In the above, the preferred embodiments of the present invention have been shown and described, but the present invention is not limited to the specific embodiments described above, and the present invention belongs to the present invention without departing from the gist of the present invention as claimed in the claims. Various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

1: Passenger 10: Seat
12: sitting part 14: backrest part
20: first electrode 22: conductive member
30: second electrode 40: controller
42: AC power meter 44: Ammeter
46: control unit 50, 52: passenger detection sensor
60: switch 70: film
72: first film 74: second film
76: air inlet 78: shielding member
80: first plate 85: spacer
86: separation space 90: second edition
100,200: Passenger Identification Device

Claims (13)

A first electrode disposed on the seat provided for the passenger to sit on;
A second electrode disposed spaced apart from the first electrode and forming an electric field between the first electrode;
An ammeter for measuring a current value according to a change in the electric field by a passenger sitting on the seat; And
And a switch provided in the seat, the switch being electrically connected to or released from the first electrode and / or the second electrode, the switch being operated by a load of a passenger seated on the seat. The method according to claim 1,
And a controller for identifying a passenger seated on the seat based on the current value. The method according to claim 1,
And the first electrode and the second electrode are disposed on the same plane in the seat. The method according to claim 3,
Passenger identification device further comprises a first film and a second film encapsulating the first electrode and / or the second electrode. The method of claim 4,
The first electrode and / or the second electrode is disposed on the first film,
Wherein the switch comprises:
A conductive member disposed on the second film so as to face the first electrode and / or the second electrode;
The first electrode and / or the second electrode and the conductive member disposed between the first electrode and / or the second electrode and the conductive member so that the conductive member can be switched. And / or a spacer forming a space between the second electrode and the conductive member. The method according to claim 5,
The spacer is made of a double-sided adhesive member,
One surface of the spacer is bonded to the first electrode and / or the second electrode, and a first plate made of the first film,
Passenger identification device to which the second plate consisting of the conductive member and the second film is bonded to the other surface of the spacer. The method of claim 6,
The first plate is disposed toward the upper side of the sheet, the second plate is disposed toward the lower side of the sheet,
Passenger identification device is formed in the second plate is an air inlet communicating with the separation space. The method of claim 6,
The first plate is disposed toward the upper side of the sheet, the second plate is disposed toward the lower side of the sheet,
The first plate and the second plate is formed with an air inlet,
Passenger identification device further comprises a shield member for shielding the air inlet on the first plate. The method according to claim 8,
The shield member is a passenger identification device is a bar code printed material containing information. The method according to claim 5,
The first electrode and / or the second electrode comprises a silver material printed on the first film. The method according to claim 10,
The conductive member comprises a silver material printed on the second film. The method of claim 4,
The first film and the second film is a passenger identification device consisting of polyethylene terephthalate (PET) material. The method according to claim 1,
The first electrode is supplied with an alternating current power source, the second electrode is disposed on the seat is grounded to the vehicle body passenger identification device.

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