KR20130111772A - A sensor for detecting an occupant of seat - Google Patents

A sensor for detecting an occupant of seat Download PDF

Info

Publication number
KR20130111772A
KR20130111772A KR1020120033924A KR20120033924A KR20130111772A KR 20130111772 A KR20130111772 A KR 20130111772A KR 1020120033924 A KR1020120033924 A KR 1020120033924A KR 20120033924 A KR20120033924 A KR 20120033924A KR 20130111772 A KR20130111772 A KR 20130111772A
Authority
KR
South Korea
Prior art keywords
conductive member
passenger
seat
panel
load
Prior art date
Application number
KR1020120033924A
Other languages
Korean (ko)
Inventor
안동규
Original Assignee
현대모비스 주식회사
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.)
Filing date
Publication date
Application filed by 현대모비스 주식회사 filed Critical 현대모비스 주식회사
Priority to KR1020120033924A priority Critical patent/KR20130111772A/en
Publication of KR20130111772A publication Critical patent/KR20130111772A/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/002—Seats provided with an occupancy detection means mounted therein or thereon
    • 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
    • B60R21/01516—Passenger detection systems using force or pressure sensing means
    • B60R21/01524—Passenger detection systems using force or pressure sensing means using electric switches

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Push-Button Switches (AREA)
  • Seats For Vehicles (AREA)

Abstract

PURPOSE: A passenger detecting sensor is provided to prevent a switch part from being damaged or disconnected due to the weight of passengers by uniformly distributing the weight of passengers applied to the switch part. CONSTITUTION: A passenger detecting sensor comprises a first panel and a second panel. The first panel is arranged with a first conductive member (12). The second panel is arranged with a second conductive member (22) which is in point-touch with the first conductive member using the weight of an object on a seat and is joined to the first panel. The first and second conductive members are shaped into an ellipse with the major axis arranged from left to right.

Description

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

The present invention relates to a passenger sensor, and more particularly, to a passenger sensor installed in the seat to detect the presence of a passenger.

In general, a vehicle is provided with various safety devices for the safety of passengers, and may include a seat belt which is a device that restrains the passenger to the seat during an accident.

The passenger sitting on the seat must wear a seat belt for safety. Recently, a vehicle is equipped with a passenger detection device that warns the passenger when the passenger does not wear the seat belt after sitting on the seat.

The passenger detecting device is arranged in a seat to detect a passenger's seating and the passenger detection sensor, and receives the signal of the passenger sensor to determine whether the passenger seated on the seat, the seat belt when the passenger is seated on the seat It includes a BCM (Body Control Module) that makes the alarm sound while lighting the warning light to wear.

The passenger sensor is operated by a switch method in which two conducting members are contacted with each other by being pressed by a load of a passenger, and is legally operated by being pressed by a 5% female having a smaller body size among all women. Accordingly, the passenger sensing sensor is easily pressed even by the 5% female so that the two conductive members are formed in a circular shape of a thin film so that the switch parts may be in contact with each other.

However, since the load of the passenger acting on the seat acts strongly in the front and rear direction of the seat, which is the direction from the hip to the thigh, and weakly acts in the left and right directions of the seat, when the switch part of the passenger sensor is formed in a circular shape, Since the distribution load acting on the switch part is not uniform, the two conducting members may be disconnected or broken by torsional stress, and are not contacted with each other by a passenger load or contacted by a non-human object. There is a problem that the recognition rate of the passenger is lowered.

The problem to be solved by the present invention is to provide a passenger sensor that is formed in the elliptical switch portion to fit the distribution load of the passenger acting on the seat, the recognition rate of the passenger is improved.

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 achieve the above object, the passenger detection sensor according to an embodiment of the present invention, the first panel and the first conductive member is disposed, and the first contact member or falling off by the load of the object occupying the seat And a second panel having two conductive members disposed therein and coupled to the first panel, wherein the first conductive member and the second conductive member are each formed in an elliptical shape, the long diameter of which is disposed to the left and right of the sheet, and the short diameter of the second conductive member. It is arranged before and after the sheet.

The details of other embodiments are included in the detailed description and drawings.

In the passenger sensor according to the present invention, the first conducting member and the second conducting member, each of which performs a switch function, are formed in an oval shape, and a short diameter is disposed in the front and rear directions of a seat in which a distributed load of the passenger is strongly applied. Since the long diameter is arranged in the left and right directions of the seat in which the distribution load of R 2 acts relatively weakly, the sensitivity of the switch part is increased in the front and rear directions of the seat and is lowered in the left and right directions of the seat. The distribution load becomes uniform, so that the recognition rate of the passenger is improved.

In addition, since the distribution load of the passenger acting on the switch part becomes uniform, there is an effect that the switch part can be prevented from being disconnected or broken while being twisted by the load of the passenger.

In addition, since the switch portion is formed in an elliptical shape, since the switch portion is not easily pressed by an object that does not fit the elliptical shape, the switch portion may be pressed by an object other than the human body, thereby preventing an erroneous recognition of the passenger.

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.

Brief Description of the Drawings Fig. 1 is a view showing a passenger detection device for a vehicle including a passenger detection sensor according to an embodiment of the present invention; Fig.
FIG. 2 is a plan view showing the passenger detection sensor shown in FIG. 1,
3 is a view showing the body pressure distribution of the passenger acting on the seat is installed passenger detection sensor according to an embodiment of the present invention,
4 is a cross-sectional view taken along the line AA in Fig. 2,
FIG. 5 is an operation of FIG. 4 by the load of the passenger sitting on the seat. FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, a passenger detection sensor according to an embodiment of the present invention will be described with reference to the drawings.

1 is a view showing a passenger detection device of a vehicle including a passenger detection sensor according to an embodiment of the present invention.

Referring to FIG. 1, a passenger detecting device for a vehicle including a passenger detecting sensor according to an embodiment of the present invention includes an SBR (not shown) for notifying a passenger sitting on a seat 3 when the seat belt 6 is not worn Seat belt reminder system according to the present invention includes a passenger detection sensor 100 disposed in a seat 3 and a passenger detection sensor 100 connected to the seat 3 to determine whether a passenger is seated on the seat 3, And a body control module (BCM) 4 for determining whether or not the seat belt 6 is worn during sitting.

Passenger detection sensor 100 is installed in the seat 3, the switch is activated when the seat 3 is pressed by the load of the passenger sitting on the seat (3) to detect the seating of the passenger in the seat (3).

The controller 4 supplies a predetermined voltage to the passenger sensor 100, and then determines whether the passenger is seated in the seat 3 according to whether the output voltage falls. That is, when the passenger detection sensor 100 is switched on by the load of the passenger sitting on the seat 3, the line resistance of the passenger detection sensor 100 is increased to generate a drop in the output voltage. When the voltage output from the sensor 100 drops, the controller 4 may determine that the passenger is seated in the seat 3.

Of course, the control unit 4 controls to activate a warning sound and / or a warning light informing the passenger to wear the seat belt 6 if the seat belt 6 is not worn when the passenger is sitting on the seat 3. .

FIG. 2 is a plan view illustrating the passenger sensor illustrated in FIG. 1.

2, the passenger detection sensor 100 includes an outer panel 40 that can be bent by the load of a passenger sitting on the seat 3, a first conductive member 12 disposed in the outer panel 40, And a second conductive member (22).

The passenger detection sensor 100 is provided with a plurality of switch portions 50 to which the first conductive member 12 and the second conductive member 22 contact when the outer panel 40 is bent by the load of the passenger. As the plurality of switch units 50 are turned on / off by the load of the passenger sitting on the seat 3, the passenger sensor 100 outputs a different voltage.

The first conductive member 12 and the second conductive member 22 are each formed in an elliptical shape, the short diameter of which is disposed in the front-rear direction of the sheet 3, and the long diameter of which is disposed in the left-right direction of the sheet 3.

The first conductive member 12 and the second conductive member 22 are formed in a thin film form. Therefore, there is a possibility of disconnection and breakage due to the distribution load of the passenger sitting on the seat 3, so it is necessary to secure the rigidity against the distribution load of the passenger.

3 is a view showing the body pressure distribution of the passenger acting on the seat in which the passenger sensor is installed according to an embodiment of the present invention.

Referring to FIG. 3, the load of the passenger sitting on the seat 3 is concentrated in the direction from the hip to the thigh. In other words, the load of the passenger acting on the seat 3 is concentrated in the front-rear direction of the seat 3 and relatively weakly acts in the left-right direction of the seat 3.

Therefore, the distribution load of the passengers acting on the switch unit 50 of the passenger sensor 100 also acts strongly in the front-rear direction and relatively weakly in the left-right direction.

In the present embodiment, the switch section 50 is formed in the elliptical shape of the first conductive member 12 and the second conductive member 22, respectively, the short diameter is arranged in the front and rear direction of the sheet 3, the long diameter is the sheet 3 Since the switch unit 50 is disposed in the left and right directions, the switch unit 50 has high sensitivity in the front and rear directions and low sensitivity in the left and right directions. Therefore, since the first conductive member 12 and the second conductive member 22 are easily contacted by the load of the passenger concentrated in the front and rear direction on the seat 3, the recognition rate of the passenger can be increased.

The shear stress in the front and rear directions of the switch unit 50 is strengthened, and the shear stress in the left and right directions is relatively weak, thereby ensuring rigidity with respect to the distribution load of the passengers acting on the switch unit 50.

Shear stress is defined by the following equation.

[Mathematical Expression]

Figure pat00001

here,

Figure pat00002
: Shear stress, W: Shear load, A: Shear cross section

According to the above equation, the shear stress increases as the shear load is larger and the shear cross-sectional area is smaller, whereas the shear stress decreases as the shear load is smaller and the shear cross-sectional area is larger.

In the present embodiment, the switch 50 has a first conducting member 12 and a second conducting member 22 each formed in an elliptical shape, the short diameter of which is disposed in the front-rear direction of the sheet 3, and the long diameter of the sheet 3. Since the front and rear ends of the switch section 50 are smaller than the left and right directions, the front and rear ends of the switch section 50 are larger than the front and rear directions. Therefore, the shear stress in the front and rear directions of the switch unit 50 becomes strong, and the shear stress in the left and right directions becomes relatively weak, and thus the first conductive member 12 and the first conductive member due to the distribution load of the passenger occupying the seat 3 are made. 2 disconnection and breakage of the conductive member 22 can be prevented.

Each of the first conductive member 12 and the second conductive member 22 has a ratio of the long diameter and the short diameter of about 2: 1. For example, the long diameter may be about 16 cm, and the short diameter may be about 8 cm.

Fig. 4 is a sectional view taken along line A-A of Fig. 2, and Fig. 5 is an operational view of Fig. 4 due to a load of a passenger sitting on the seat.

4 and 5, the passenger detection sensor 100 is formed by adhering two panels on which conductive members are disposed. That is, the outer panel 40 includes a first panel 10 disposed on the upper side of the passenger detection sensor 100 and a second panel 20 disposed on the lower side of the passenger detection sensor 100, The first conductive member 12 is disposed on one side of the panel 10 and the second conductive member 22 is disposed on the second side of the second panel 20 to form the first panel 10 and the second panel 20 ). The first panel 10 and the second panel 20 are arranged such that the first conductive member 12 and the second conductive member 22 are opposed to each other and then the first conductive member 12 And the second conductive member 22 are adhered to each other. In the present embodiment, the first panel 10 and the second panel 20 are made of flexible polyethylene terephthalate (PET) material, and the joining member 30 is a double-sided tape.

The joining member 30 is formed by bonding the first conductive member 12 and the second conductive member 22 so that a space S is formed between the first conductive member 12 and the second conductive member 22 When the first panel 10 and the second panel 20 are bent by the load of the occupant occupying the seat 3, the first conductive member 12 and the second conductive member 22 are mutually engaged with each other It can be switched on and off.

The first conductive member 12 includes a first silver part 12a made of silver and printed on one surface of the first panel 10, and a first silver part for preventing oxidation of the first silver part 12a. And a first carbon portion 12b of carbon material which is printed and disposed on (12a).

The second conductive member 22 is formed in the same structure as the first conductive member 12. That is, the second conductive member 22 may include a second silver part 22a made of silver and printed on one surface of the second panel 20 to prevent oxidation of the second silver part 22a. A second carbon portion 22b made of carbon material is printed and disposed on the silver portion 22a.

The coupling member 30 bonds the first carbon portion 12b and the second carbon portion 22b so that the space S is formed, and the seat 3 is pressed by the load of the passenger sitting on the seat 3. At this time, the first panel 10 and the second panel 20 are pressed and bent, so that the first conductive member 12 and the second conductive member 22 adhere to each other in the space S so that the switched-on state is achieved. To be possible.

Referring to Fig. 4, when the seat 3 is vacant, the passenger sensing sensor 100 is separated from the first conductive member 12 and the second conductive member 22 from each other.

Referring to FIG. 5, when the passenger is seated on the seat 3, the passenger detection sensor 100 is brought into contact with the first conductive member 12 and the second conductive member 22. At this time, the line resistance is increased in the circuit to cause a voltage drop, and the controller 4 can judge that the seat 3 is occupied by the passenger.

As described above, the passenger detection sensor 100 according to the present invention, the first conducting member 12 and the second conducting member 22 to perform a switch function are each formed in an elliptical shape, the distribution load of the passenger acts strongly Since the short diameter is arranged in the front-rear direction of the seat 3, and the long diameter is arranged in the left-right direction of the seat 3, in which the distribution load of the passenger is relatively weak, the sensitivity of the switch unit 50 is increased. Since the height increases in the front-rear direction and lowers in the left-right direction of the seat, the distribution load of the passenger acting on the switch unit 50 becomes uniform, and the recognition rate of the passenger is improved.

In addition, since the distribution load of the passenger acting on the switch unit 50 becomes uniform, it is possible to prevent the switch unit 50 from being disconnected or broken while being twisted by the load of the passenger.

In addition, since the switch unit 50 is formed in an elliptical shape, since the switch unit 50 is not easily pressed by an object that does not fit the elliptical shape, the switch unit 50 can be prevented from being mistaken as a passenger while being pressed by an object other than the human body. .

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative and non-restrictive in every respect. The scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalents thereof are included in the scope of the present invention Should be interpreted.

10: first panel 12: first conductive member
12a: first silver portion 12b: first carbon portion
20: second panel 22: second conductive member
22a: second silver portion 22b: second carbon portion
30: coupling member 100: passenger detection sensor

Claims (6)

A first panel on which the first conductive member is disposed; And
And a second panel in which a second conductive member contacting or falling from the first conductive member by a load of an object occupying a sheet is disposed and coupled to the first panel.
The first conductive member and the second conductive member are each formed in an elliptical shape, the long diameter of which is arranged to the left and right of the sheet, the short diameter of the passenger sensor is disposed before and after the sheet. The method according to claim 1,
The first conductive member so that the first conductive member and the second conductive member are spaced apart between the first conductive member and the second conductive member so that the first conductive member and the second conductive member can be contacted or separated from each other by the load of the object occupying the sheet. And a coupling member for coupling the member and the second conductive member. The method according to claim 1,
The first panel and the second panel is a passenger sensor, each formed of a PET (PET) material. The method according to claim 1,
The first conductive member may include a first silver part of a silver material disposed on one surface of the first panel, and a first carbon part of a carbon material disposed on the first silver part to prevent oxidation of the first silver part. and,
The second conductive member may include a second silver part of silver material disposed on one surface of the second panel, and a second carbon part of carbon material disposed on the second silver part to prevent oxidation of the second silver part. Passenger detection sensor. The method according to claim 1,
And the first conductive member and the second conductive member have a ratio of the long diameter and the short diameter of about 2: 1, respectively. The method according to claim 2,
The coupling member is a double sided tape passenger detection sensor.
KR1020120033924A 2012-04-02 2012-04-02 A sensor for detecting an occupant of seat KR20130111772A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120033924A KR20130111772A (en) 2012-04-02 2012-04-02 A sensor for detecting an occupant of seat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120033924A KR20130111772A (en) 2012-04-02 2012-04-02 A sensor for detecting an occupant of seat

Publications (1)

Publication Number Publication Date
KR20130111772A true KR20130111772A (en) 2013-10-11

Family

ID=49633010

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020120033924A KR20130111772A (en) 2012-04-02 2012-04-02 A sensor for detecting an occupant of seat

Country Status (1)

Country Link
KR (1) KR20130111772A (en)

Similar Documents

Publication Publication Date Title
US20150360643A1 (en) Occupant sensing and classification system
EP1795402A1 (en) Seat occupancy detection device
JP5316527B2 (en) Capacitive occupant detection device
JP4324877B2 (en) Capacitive occupant detection sensor
CN201895647U (en) Seat with safety belt warning device
JP2010159043A (en) Occupant detection system
JP2012141137A (en) Occupant detection system
US20190299924A1 (en) Occupancy Sensing for a Child Transportation System
JP2014221562A (en) Seating state determination device, seat belt and seating state determination method
KR101495770B1 (en) Sensor for detecting an occupant of seat and menufacturing method thereof
KR20130111772A (en) A sensor for detecting an occupant of seat
KR20130007830A (en) Sensing apparatus of passenger for automobile
CN203479440U (en) Seating load detecting device
KR20120129114A (en) A apparatus for sensing passenger
JP2017007472A (en) Seating state detection device
US20140305713A1 (en) Occupant classification apparatus using load sensor
US11673489B2 (en) Seating sensor and seat device
KR20140062802A (en) A sensor for detecting an occupant of seat
US9541446B2 (en) Occupant determination apparatus using load sensor
KR20140024606A (en) A apparatus for sensing an occupant
KR20140082235A (en) A sensor for detecting an occupant of seat and menufacturing method thereof
CN206485267U (en) Vehicle and its steering indicating light fault self-checking and early warning system
KR20100113376A (en) Sensing apparatus of passenger for automobile
JP5738694B2 (en) Seat sensor and seat device
JP2012086780A (en) Seat device

Legal Events

Date Code Title Description
WITN Withdrawal due to no request for examination