KR20140076368A - Safety belt controlling system and method for vehicle - Google Patents

Abstract

The present invention relates to a system and a method for controlling a safety belt of a vehicle capable of moving a fixed point of the safety belt and a seat according to the information of a passenger. The system for controlling the safety belt of the vehicle according to an embodiment of the present invention includes: a seat mounted on a vehicle body to make a passenger seat; the safety belt composed of a belt formed to enclose a passenger across the seat and a buckle joined to one end of the belt; an actuator which supplies power to change the position of the safety belt and the seat; a sensor sensing the information of the passenger sitting on the seat; and an electric control unit which operates the actuator according to the information of the passenger received from the sensor. A method for controlling the safety belt of the vehicle according to an embodiment of the present invention is a method for controlling a safety belt control system of the vehicle in which the electric control unit, receiving the information of the passenger sensed by the sensor, controls the safety belt and the seat. The method for controlling the safety belt of the vehicle includes: a step in which a measurement value of the sensor is inputted into the electric control unit; a step of determining the height of the upper body of the passenger; a step of determining the width of the upper body of the passenger; a step of controlling the height of one end of the safety belt according to the sitting height and shoulder height of the passenger; and a step of controlling the position of the other end of the safety belt according to the width of the upper body of the passenger.

Description

TECHNICAL FIELD [0001] The present invention relates to a safety belt control system for a vehicle,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a seat belt control system and a control method for a vehicle, and more particularly, to a seat belt control system and a control method for an automobile which can improve safety.

Generally, a safety belt is a device installed in a seat to protect an occupant from shocks caused during operation in an automobile, a highway bus, an aircraft, a train, and the like. That is, the seatbelt prevents and minimizes crashing, sudden braking, or vibration when the occupant is released from the seat or hit an object in the room.

For example, if a car runs at 40 km / h and strikes an obstacle, it can be shocked to 16 times its body weight. On the other hand, the average adult man can withstand two to three times the weight of his body. Thus, a typical seat belt is designed to withstand a force that is about 30 times the weight of an adult male.

In particular, a typical automotive seat belt is formed of cloth. In addition, a buckle is provided at one end of the seat belt so that the occupant can easily wear and unfasten the seat belt.

Such a seat belt is divided into two points, three points, and four points according to the number of fixed points. Here, the fixing point is that the seat belt is fixed to the vehicle body when the buckle is fastened. In other words, the two-point type is fixed at two places of the car body so that the belt rolls around the waist or the chest of the driver, and the three-point type is fixed at three places of the car body so that the belt wears around the driver's waist and shoulder. In addition, the four-point type in which the belt is fixed to four positions of the vehicle body is applied to the main body, and it is called a full harness type.

On the other hand, when the fixing point of the seat belt is fixed at one point of the vehicle body, it may become difficult to ensure safety according to the size of the occupant's body. In addition, the occupant wearing the seat belt may feel uncomfortable, and the seat belt may be improperly worn due to inconvenience. Furthermore, when the occupant is not an adult, it is troublesome to additionally attach a child seat or the like in order to secure safety.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a seatbelt control system and a control method for a vehicle in which a fixing point of a seatbelt moves according to a passenger.

Another object of the present invention is to provide a seat belt control system and a control method for a vehicle in which the position of a seat is changed according to the posture of a passenger.

According to an aspect of the present invention, there is provided a seat belt control system for a vehicle, the seat belt control system comprising: a seat mounted on a vehicle body so that an occupant is seated; A seat belt configured to hold a passenger across the seat, and a buckle fastened to one end of the seat belt; An actuator for supplying power to change the position of the seat and the seat belt; A sensor for detecting information of a passenger seated on the seat; And an electronic control unit for operating the actuator according to information of a passenger transmitted from the sensor. . ≪ / RTI >

The other end of the belt is provided with a mounting portion to be engaged with the vehicle body. The vehicle body is provided with a mounting portion rail such that the mounting portion slides, and the mounting portion can be slid along the mounting portion rail according to the operation of the actuator.

The height of one end of the belt can be adjusted by sliding the mounting portion.

The sensor detects information including a sitting key of a passenger, and the electronic control unit can control the actuator so that the height is adjusted according to information on an occupant's sitting key transmitted from the sensor.

The buckle is coupled to the vehicle body. The vehicle body is provided with a buckle rail to slide the buckle, and the buckle can be slid along the buckle rail according to the operation of the actuator.

The width of the belt across the sheet can be adjusted by sliding the buckle.

The sensor detects information including the circumference of an occupant's body, and the electronic control unit can control the actuator so that the width is adjusted according to information on an occupant's body circumference that is transmitted from the sensor.

Wherein the seat includes a lower body seat adapted to seat the lower body of a passenger and an upper body seat adapted to seat the upper body of the occupant, wherein the body sheet is mounted to be hinged around one end connected to the lower body sheet, The upper body sheet can be hinged.

The sensor detects information including the posture of the occupant, and the electronic control unit can control the actuator such that the body sheet hinges back and forth or right and left according to information on the occupant's posture transmitted from the sensor .

The actuator may include a plurality of actuators to move the seat or the seat belt.

The sensor can detect the body size and posture of the occupant.

A control method for controlling a seatbelt of an automobile according to an embodiment of the present invention is a control method for controlling a seatbelt control system of an automobile in which an electronic control unit that receives information of a passenger detected by a sensor controls a seatbelt and a seat, The measured value of the sensor being input to the electronic control unit; Determining an upper body height of a passenger; Determining an upper body width of an occupant; Controlling a height of the one end of the seatbelt according to an occupant's seated key and shoulder height; And controlling a position of the other end of the seat belt in accordance with an upper body width of an occupant; . ≪ / RTI >

Determining a posture of the occupant; And controlling the position of the seat in accordance with an occupant's posture; As shown in FIG.

After the height of the upper body of the occupant is determined, if the upper body width is determined, height control of the one end of the seatbelt and position control of the other end can be simultaneously performed.

If it is not possible to determine the width of the upper body after the height of the upper body of the passenger is determined, only the height control of the one end of the seatbelt can be performed.

When the posture of the passenger is determined after the height and width of the passenger is determined, height control of the one end of the seatbelt, position control of the other end, and position control of the seat can be performed simultaneously.

If the posture can not be determined after the height and width of the passenger's body are determined, only the height control of the one end of the seatbelt and the position control of the other end can be performed.

As described above, according to the embodiment of the present invention, the fixation point of the seat belt is changed according to the passenger, so that the feeling of fit of the seat belt can be improved.

Further, the position of the seat is changed according to the posture of the occupant, so that the correct wearing of the seatbelt can be maintained.

Furthermore, the safety of the passenger wearing the seatbelt is improved, and the safety can be ensured without the additional safety device required according to the occupant.

1 is a schematic block diagram of a seat belt control system for a vehicle according to an embodiment of the present invention.
2 is a view showing a state where an image sensor according to an embodiment of the present invention is mounted on a vehicle.
3 is a view showing a state where an ultrasonic sensor according to an embodiment of the present invention is mounted on a vehicle.
4 is an operational view of a seat operated by a seat belt control system of an automobile according to an embodiment of the present invention.
5 is a flowchart of a seat belt control method for a vehicle according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic block diagram of a seat belt control system for a vehicle according to an embodiment of the present invention.

1, a seat belt control system 1 for an automobile according to an embodiment of the present invention includes a seat 5, a seat belt 4, actuators 40, 50, 60, sensors 10, 20 ), And an electronic control unit (30).

The seat 5 is mounted on the vehicle body so as to seat the occupant, and includes an upper body sheet 54 and a lower body sheet 56.

The upper body seat 54 is a backrest provided so that the upper body of the occupant can be seated, and the lower body seat 56 is a base for seating the lower body of the occupant.

The body sheet 54 and the lower body sheet 56 are designed to support the load of the occupant and are designed in consideration of the riding comfort of the occupant. One end of the upper body sheet 54 is connected to the lower body sheet 56 and is mounted on the lower body sheet 56 so as to be hinged around one end connected to the lower body sheet 56. Further, the body sheet 54 can be hinged back and forth or right and left.

The seat belt 4 is a seat installed in the seat to protect the occupant from the impact of the vehicle, and includes a belt 42, a mounting portion 44, and a buckle 62. On the other hand, the control system 1 further includes a mounting rail 46, and a buckle rail 64.

The belt 42 is mainly formed of a cloth material. One end of the belt 42 is coupled to the buckle 62, and the other end is connected to the vehicle body. Further, the mounting portion 44 is provided at the other end of the belt 42 so as to be connected to the vehicle body.

On the other hand, the vehicle body is provided with the mounting portion rails 46. Further, the other end of the belt 42 is connected to the vehicle body by engaging the mounting portion rail 46 with the mounting portion 44. Further, the mounting portion rail 46 is a long one-way rail, and the mounting portion 44 is mounted so as to slide along the longitudinal direction of the mounting portion rail 46. Here, if the mounting portion 44 is moved by sliding, the height of the other end of the belt 42 is changed.

The buckle 62 is connected to the buckle 62 and is coupled to one end of the belt 42. The occupant seated on the seat 5 wears the seat belt 4 by fastening the buckle 62 to one end of the belt 42. [

On the other hand, the vehicle body is provided with a buckle rail (64). Further, the buckle rail (64) is engaged with the buckle (62), so that one end of the belt (42) is connected to the vehicle body. Furthermore, the buckle rail (64) is a long rail formed in one direction, and the buckle (62) is mounted to slide along the longitudinal direction of the buckle rail (64). Here, the belt 42 is connected from the mounting portion 44 to the buckle 62 across the seat 5, and when the buckle 62 is moved by sliding, 5 is changed.

The seat belt 4 may be of a two-point type having the mounting portion 44 and the buckle 62 as fixing points. On the other hand, the seat belt 4 may be of a three-point type which further includes another fixed point (not shown) which does not have a flow.

When the seat belt 3 is of a three-point type, the belt 42 is fixed to the belt 44 via the mounting portion 44 and the other fixed point disposed in the longitudinal direction of the mounting rail 46, 42 at the ends thereof. The configuration of the two-point type or the three-point type is obvious to those skilled in the art (hereinafter referred to as a person skilled in the art) and will not be described in detail.

The actuators (40, 50, 60) supply power to change the position of the seat (5) and the seat belt (4). The actuators 40, 50, and 60 may include a first actuator 40, a second actuator 50, and a third actuator 60.

Although the three actuators 40, 50 and 60 are shown in Fig. 3, the number of actuators and the number of components that power one actuator can be modified and applied by those skilled in the art.

The first actuator 40 provides power for the mounting portion 44 to slide on the mounting rail 46. The second actuator 50 supplies power to hinge the first body sheet 54 about one end connected to the lower body sheet 56. The third actuator 60 provides power to the buckle 62 to slide on the buckle rail 64. A motor (not shown) may be incorporated in the first, second, and third actuators 40, 50, 60 to supply power.

The sensors (10, 20) detect information of a passenger seated on the seat (5). Further, the sensors 10 and 20 detect information including a sitting size of a passenger, a height of a shoulder, a body size such as a volume of an upper body, and an occupant's posture. Further, the sensors 10 and 20 include an image sensor 10 and an ultrasonic sensor 20.

The image sensor 10 is a general term for an imaging device that converts image information transmitted by ultraviolet rays, visible rays, infrared rays, X-rays, or the like into electric signals. That is, the image sensor 10 is equipped with a camera 12 such as a far infrared ray camera or a near infrared ray camera.

The ultrasonic sensor 20 is a sensor that detects the distance, thickness, or motion by using characteristics of the ultrasonic sensor 20 or by generating ultrasonic waves. The ultrasound sensor 20 is equipped with a radar (not shown) or a TOF camera (time of flight camera) such as a light detection and ranging (lidar) to detect distance, thickness, .

The image sensor 10 and the ultrasonic sensor 20 may be used according to the design of a person skilled in the art, or only one of them may be used.

The electronic control unit 30 may be conventional electronic control units (ECUs) that control the control of electronic devices of an automobile.

The electronic control unit (30) is connected to the sensors (10, 20) and the actuators (40, 50, 60). In addition, the electronic control unit 30 receives occupant information from the sensors 10 and 20, and actuates the actuators 40, 50 and 60 according to the received information. Therefore, the upper body sheet 54, the mounting portion 44, and the buckle 62 are controlled to move in accordance with the information of the occupant seated on the seat 5.

In other words, the electronic control unit 30 slides the mounting portion 44 and controls the height of the other end of the belt 42 according to the information about the height of the body of the occupant detected by the sensors 10, 20. The electronic control unit 30 slides the buckle 62 in accordance with the information on the body volume and the circumference of the passenger detected by the sensors 10 and 20 so that the belt 42 is pressed against the seat 5, Lt; / RTI > Further, the electronic control unit 30 hinges the body sheet 54 back and forth or right and left according to the information about the posture of the occupant detected by the sensors 10, 20.

Although the image sensor 10 and the ultrasonic sensor 20 are shown connected to the electronic control unit 30 in FIG. 1, the image sensor 10 and the ultrasonic sensor 20 are not shown in FIG. Various sensors capable of detecting occupant information required in the embodiment of the present invention can be applied.

FIG. 2 is a view showing a state where an image sensor according to an embodiment of the present invention is mounted on a vehicle, and FIG. 3 is a view showing a state where an ultrasonic sensor according to an embodiment of the present invention is mounted on a vehicle.

As shown in FIG. 2, the image sensor 10 is provided so that the built-in camera captures all the sheets 5 of the vehicle. For example, the image sensor 10 may be mounted in the vicinity of a central rear view mirror 14 in an automobile.

As shown in FIG. 3, the ultrasonic sensor 20 is provided to detect information of a passenger seated in all the seats. Therefore, at least one or more ultrasonic sensors 20 may be provided for each sheet 5. For example, the plurality of ultrasonic sensors 20 may be mounted on the roof 22 in an automobile interior.

4 is an operational view of a seat operated by a seat belt control system of an automobile according to an embodiment of the present invention.

4 (a) shows that the upper body sheet 54 of the sheet 5 is hinged to the front and rear, and FIG. 4 (b) shows that the upper body sheet 54 of the sheet 5 hinges to the left and right Respectively.

As described above, the hinge movement of the body sheet 54 in the front, rear, left, and right directions can be controlled according to the posture of the occupant. 4 (b), the upper body sheet 54 is formed so that the vertical line L and the longitudinal center line C of the body sheet 54 form an angle within a predetermined range around one end thereof You can hinge.

Hereinafter, a method of controlling a seat belt of a vehicle according to an embodiment of the present invention will be described with reference to FIG.

5 is a flowchart of a seat belt control method for a vehicle according to an embodiment of the present invention. Further, a method of controlling a seat belt of an automobile according to an embodiment of the present invention is a method of controlling the control system 1. [

5, when the control system 1 is turned on (S100), the measured values detected by the sensors 10 and 20 are input to the electronic control unit 30 (S110). Here, the measured value is information including a sitting size of a passenger, a height of a shoulder, a body size such as a volume of an upper body, and an attitude.

When the information of the passenger is input to the electronic control unit 30 (S110), the electronic control unit 30 determines the height of the passenger's body (S120).

If the height of the upper body of the occupant is determined (S120), the electronic control unit 30 determines whether the width of the occupant can be determined according to the information on the upper body volume and the circumference of the occupant (S130).

If the width of the occupant can be determined, the electronic control unit 30 determines the width of the occupant (S140).

If the width of the occupant can not be determined, the electronic control unit 30 controls the height of the seat belt 4 according to the determined height of the upper body of the occupant (S150). That is, the electronic control unit 30 changes the height of the other end of the belt 42 by operating the first actuator 40 such that the mounting portion 44 slides. Here, when the width of the occupant can not be determined, the position control of the buckle 62 may not be required depending on the width of the occupant.

If the width of the passenger is determined (S140), the electronic control unit 30 determines whether the posture of the passenger can be determined according to the information received from the sensors 10 and 20 (S160).

If it is possible to determine the posture of the occupant, the electronic control unit 30 determines the posture of the occupant (S170).

If it is not possible to determine the occupant's posture, the electronic control unit 30 controls the height of the seat belt 4 and the position of the buckle 62 in accordance with the determined height of the upper body of the occupant and the width of the occupant (S180 ). That is, the electronic control unit 30 changes the height of the other end of the belt 42 by activating the first actuator 40 so that the mounting portion 44 slides, 2 Actuator 50 actuates the belt 42 to change the width across the seat 5. [ Here, when it is not possible to determine the posture of the occupant, the position control of the seat 5 according to the posture of the occupant may not be required.

The electronic control unit 30 determines the height of the seat belt 4, the position of the buckle 62, and the position of the buckle 62 according to the determined height, width, and posture of the occupant, The position of the sheet 5 is controlled (S190). That is, the electronic control unit 30 changes the height of the other end of the belt 42 by activating the first actuator 40 so that the mounting portion 44 slides, 2 Actuator 50 is operated to change the width of the belt 42 across the seat 5 so that the upper body seat 54 of the seat 5 hinges back and forth, (60) to change the inclination of the body sheet (54) in the forward, backward, or leftward and rightward directions.

The electronic control unit 30 controls only the height of the seat belt 4 at S150 and controls only the height of the seat belt 4 and the position of the buckle 62 at S180, S150, S180, and S190) of controlling the height of the seat 5, the position of the buckle 62, and the position of the seat 5 are completed (S190), the electronic control unit 30 It is determined whether the control system 1 is turned off (S200).

If it is determined that the control system 1 is turned off, the entire process of the seat belt control method of the automobile ends (S210).

If it is determined that the control system 1 is not turned off, the process is repeated from the step S110 in which the measured values of the sensors 10 and 20 are input to the electronic control unit 30.

As described above, according to the embodiment of the present invention, the fixation point of the seat belt 4 is changed according to the occupant, so that the feeling of fit of the seat belt 4 can be improved. Further, the position of the seat 5 is changed according to the posture of the occupant, so that the correct wearing of the seat belt 4 can be maintained. Furthermore, the safety of the passenger wearing the seat belt 4 can be improved, and the safety can be ensured without an additional safety device required according to the occupant.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And all changes to the scope that are deemed to be valid.

1: control system 4: seat belt
5: seat 10: image sensor
12: camera 20: ultrasonic sensor
30: Electronic control unit 40: First actuator
42: belt 44:
46: mounting part rail 50: second actuator
54: upper body sheet 56: lower body sheet
60: third actuator 62: buckle
64: Buckle rail

Claims (17)

A seat mounted on the vehicle body for seating the occupant;
A seat belt configured to hold a passenger across the seat, and a buckle fastened to one end of the seat belt;
An actuator for supplying power to change the position of the seat and the seat belt;
A sensor for detecting information of a passenger seated on the seat; And
An electronic control unit for operating the actuator according to occupant information transmitted from the sensor;
The seat belt control system of the present invention. The method according to claim 1,
The other end of the belt is provided with a mounting portion to be engaged with the vehicle body,
A mounting part rail is provided on the vehicle body such that the mounting part slides,
And the mounting portion is slid along the mounting rail according to the operation of the actuator. 3. The method of claim 2,
And the height of the other end of the belt is adjusted by sliding the mounting portion. The method of claim 3,
The sensor detects information including a sitting key of a passenger,
Wherein the electronic control unit controls the actuator so that the height is adjusted in accordance with information about an occupant's seat key transmitted from the sensor. The method according to claim 1,
The buckle is engaged with the vehicle body,
The vehicle body is provided with a buckle rail to slide the buckle,
And the buckle is slid along the buckle rail according to the operation of the actuator. 6. The method of claim 5,
Wherein a width of the belt across the seat is adjusted by sliding the buckle. The method according to claim 6,
Wherein the sensor detects information including an upper body circumference of a passenger,
Wherein the electronic control unit controls the actuator so that the width is adjusted according to information about an upper body circumference of a passenger transmitted from the sensor. The method according to claim 1,
The seat includes a lower body sheet provided to seat the lower body of a passenger and an upper body sheet provided to seat the upper body of the occupant,
The upper body sheet is mounted so as to be hinged around one end connected to the lower body sheet,
And the upper body sheet is hinged according to an operation of the actuator. 9. The method of claim 8,
The sensor detects information including the posture of the occupant,
Wherein the electronic control unit controls the actuator such that the upper body sheet hinges back and forth or right and left according to information on an occupant's posture transmitted from the sensor. The method according to claim 1,
Wherein a plurality of actuators are provided to move the seat or the seat belt. The method according to claim 1,
Wherein the sensor detects a body size and an attitude of a passenger. A control method for controlling a seatbelt control system of an automobile in which an electronic control unit, which has received information on an occupant detected by a sensor, controls a seatbelt and a seat,
The measured value of the sensor being input to the electronic control unit;
Determining an upper body height of a passenger;
Determining an upper body width of an occupant;
Controlling a height of the one end of the seatbelt according to an occupant's seated key and shoulder height; And
Controlling a position of the other end of the seat belt in accordance with an upper body width of an occupant;
And a control unit for controlling the seat belt. 13. The method of claim 12,
Determining a posture of the occupant; And
Controlling a position of the seat in accordance with an occupant's posture;
Further comprising the steps of: 13. The method of claim 12,
After the upper body height of the occupant is determined, if the upper body width is determined,
Wherein the height control of the one end of the seat belt and the position control of the other end are simultaneously performed. 13. The method of claim 12,
If it is determined that the upper body width can not be determined after the height of the upper body of the passenger is determined,
Wherein only the height control of the one end of the seat belt is performed. 14. The method of claim 13,
After determining the height and width of the upper body of the passenger, if the posture is determined,
Wherein a height control of the one end of the seat belt, a position control of the other end, and a position control of the seat are simultaneously performed. 14. The method of claim 13,
If the posture can not be judged after the height and width of the body of the passenger are judged,
Wherein the height control of the one end of the seat belt and the position control of the other end are performed.

Images