KR20190024187A - Device and method for controlling seat of vehicle - Google Patents

Abstract

The present invention provides a device and a method for controlling a seat of a vehicle, wherein when a driving mode of a vehicle is converted from a normal mode into a sport mode, a change in a position of a seat and a shape of a bolster is controlled to provide an optimized hugging feeling to a driver and a passenger. Therefore, a satisfactory seat seating feeling can be provided to a driver, and at the same time, satisfactory driving stability and running stability can be provided.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a seat control apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an automotive seat control apparatus and method, and more particularly, to an automobile seat control apparatus and method, The present invention relates to a vehicle seat control apparatus and method,

The driving mode of the vehicle includes the eco mode and the sports mode in addition to the basic normal mode in consideration of the current driving environment and the driving behavior of the driver.

The eco mode refers to a running mode that helps to improve fuel economy by controlling the engine RPM to reduce the acceleration capability and maintaining the engine RPM at an appropriate level.

Particularly, in the sports mode, the speed of the shift is decreased by increasing the instantaneous acceleration force so that the high RPM of the engine can be utilized and the reaction of the throttle valve is accelerated to allow the engine to react sensitively even when the accelerator pedal is operated with less. To the vehicle.

The driver not only feels different driving sensibilities but also feels different seat seats.

For example, when the vehicle turns while driving, the body of the driver moves toward the direction of centrifugal force and inertia. In each driving mode, the body tends to be different from each other. In particular, do.

However, since the position and shape of the seat are maintained regardless of the running mode of the vehicle, the driver has to feel dissatisfied with the seat seated feeling. Especially, in the sports mode, the seat has a hugging feeling, This may result in more complaints about the seat seated feeling, which may result in instability of the driving posture and lowering of the driving stability and driving stability.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an improved hugging feeling for a driver and a passenger by controlling seat position and bolster shape change control when a driving mode of a vehicle is changed to a sports mode The present invention provides a seat control apparatus and method for a vehicle which can provide a satisfactory seat stability to a driver while providing a satisfactory seat seated feeling.

According to an aspect of the present invention, there is provided an apparatus for measuring a body pressure of a driver, comprising: a body pressure measuring sensor mounted on a seat back for measuring a body pressure of a driver; and a tilt measuring sensor mounted on the seat back, ; A traveling mode discrimination unit for discriminating a current traveling mode; The hugging sensation scale is calculated based on the body pressure information from the measuring unit and the hugging sensation of the mid-back and back-side of the driver's body in the normal mode is calculated using the calculated hugging sensation scale. A hugging sense judgment unit for calculating the degree of hugging sensation by a numerical value; If the current driving mode is determined to be the sports mode, the hugging sense degree of the mid-back and back-side in the normal mode provided from the hugging sense judgment unit is set to the target level for the sense of sport mode hugging A hugging sense analyzer for changing and setting the hugging sense; And a seat controller for adjusting an angle of the seat back and a seat back bolster volume according to a hugging feeling in the normal mode provided by the hugging feeling judgment part and a hugging feeling in the sports mode provided by the hugging feeling analysis part. And a controller for controlling the seat of the automobile.

The body pressure measuring sensor is built in between a seat back cover and a foam pad, and has a structure in which a pressure sensor is attached in a 3 × 3 arrangement on a flexible mat, and a pair of the upper, And a second body pressure measuring sensor which is provided in a structure in which a body pressure sensor is attached in a 2x3 array on a flexible mat and is built in the top, .

The inclination measuring sensor is incorporated in a predetermined position of the seat back and is adopted as a kind of MEMS sensor for measuring the seat back angle information in the normal mode and the seat back angle change amount in the sports mode.

The measuring unit may further include a height sensor mounted on the front and rear suspensions to obtain current tilt information of the vehicle.

The driving mode determining unit may determine the current driving mode of the vehicle to be the normal mode or the sports mode based on the driving mode selection signal from the driving mode switch or the navigation information from the navigation with GPS.

Preferably, the driving mode determining unit determines whether the current driving mode is the normal mode or the sports mode using the driving information from the navigation while the auto driving switch is on, And determines that the current mode is the sports mode when the rain information is not received and determines the normal mode when the vehicle speed is less than the critical speed, the traffic condition is not smooth, or the rain information is received.

The hugging sensation scale calculated by the hugging sensation discrimination unit is calculated using the body pressure information from the measurement unit and is defined as the ratio of the body pressure in the middle part and the back side of the driver's body and the degree of unevenness of the pressure in the body of the driver.

Preferably, the body pressure generating rate is calculated as a ratio of a body pressure sensor that generates an actual body pressure sensing signal with respect to the whole body pressure sensor that can be in contact with the middle of the driver's body, (Standard deviation / average) of the body pressure sensing fluctuation of the whole body pressure sensor.

The seat back angle is controlled by an electric reclining device in accordance with a control signal of the seat control section, and the seat back bolster volume is controlled through air pressure control for a plurality of air cells housed in the bolster.

The seat control apparatus of the present invention senses the driver's eye point before and after the seat back angle adjustment and transmits a signal for returning the eye point after the seat back angle adjustment to the eye point before the seat back angle adjustment to the seat control unit And an eye tracking device for adjusting the position of the X-axis and the Z-axis of the seat cushion.

According to another aspect of the present invention, there is provided a method for measuring a body pressure of a driver, comprising the steps of: i) measuring a body pressure of a driver in a body pressure measuring sensor mounted on a seat back; Ii) determining whether the current driving mode is the normal mode or the sports mode in the driving mode determination unit; (Iii) The hugging sensory evaluation unit calculates the hugging sensation scale based on the body pressure information from the measurement unit and calculates the mid-back and backside parts of the driver's body in the normal mode using the calculated hugging sensation scale Calculating a degree of hugging of the back-side by a numerical value; (Iv) If the current driving mode is determined to be the sports mode, the hugging sense analyzing unit determines the hugging sense degree of the mid-back and back-side in the normal mode provided from the hugging sense judgment unit, Changing a target level for a sense of hugging in a mode; Adjusting a seat back angle and a seat back bolster volume according to a hugging sensation in a normal mode and a hugging sensation sensation in a sports mode provided by the hugging sensory analysis unit provided in the seat control unit, ; And a control unit for controlling the vehicle seat.

In the step (ii), the driving mode determining unit may determine whether the current driving mode is the normal driving mode or the sports driving mode using the driving information from the navigation while the auto driving switch is on, If the vehicle speed is below the critical speed, the traffic condition is not smooth, or the rain information is received, it is determined that the vehicle is in the normal mode.

In the step (iii), the hugging sensation scale is calculated by using the body pressure information from the measuring unit, and is defined as a ratio of generation of the body pressure in the middle part of the driver's body and a degree of unevenness in pressure generation.

Preferably, the body pressure generating rate is calculated as a ratio of a body pressure sensor that generates an actual body pressure sensing signal with respect to the whole body pressure sensor that can be in contact with the middle of the driver's body, (Standard deviation / average) of the body pressure sensing fluctuation of the whole body pressure sensor.

In the step (iii), after the current tilt information of the vehicle is obtained from the height sensor attached to the front and rear suspensions of the vehicle, the hugging impression determining unit determines whether the vehicle is downhill or uphill, The degree of hugging sensation is numerically calculated in consideration of the increase and decrease of the body pressure of the mid-back and back-side of the driver.

In the step (v), the seat back angle is controlled by an electric reclining device that receives the signal of the seat control unit, and the seat back bolster volume is controlled by pneumatic control for a plurality of air cells built in the bolster do.

Further, the seat control method of the present invention may further include: detecting driver's eye points before the seat back angle adjustment in the eye tracking apparatus before the step (v); and after the seat back angle adjustment in the eye tracking apparatus after the step Detecting a driver's eye point of the seat back angle; transmitting a signal to the seat control unit to return the eye point after the seat back angle adjustment to the eye point before the seat back angle adjustment; The X-axis and Z-axis positions of the driver eye point are adjusted so that the driver eye point returns to the eye point before the seat back angle adjustment.

Through the above-mentioned means for solving the problems, the present invention provides the following effects.

First, in the normal mode and the sports mode of the driving mode of the vehicle, it is possible to provide a hugging feeling optimized for the driver and the passenger through the seat position and bolster shape change control.

Second, due to the optimum hugging feeling that the seat covers the driver stably, the driver can feel the seated seating feeling as if he / she is in a sports car, and thus provide stable and dynamic driving stability and driving stability can do.

Third, when the vehicle turns while driving, the driver's body is concentrated in the direction of centrifugal force and inertia. By optimizing the seat position and changing the volume of the bolster, it is possible to provide stable driving posture and seat- have.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram showing an automotive seat control apparatus according to the present invention;
2 is a schematic view showing a structure in which a body pressure measuring sensor of a seat control device for an automobile according to the present invention is embedded in a seat;
3 is a schematic view showing a seat back inclination measuring sensor included in a measuring section of an automotive seat control apparatus according to the present invention,
4 is a schematic view showing a vehicle tilt sensor mounting position included in a measuring section of an automotive seat control apparatus according to the present invention,
5 is a flowchart showing a driving mode discrimination process of a driving mode discrimination unit of an automotive seat control apparatus according to the present invention,
6 is a schematic view showing a body part for optimally discriminating a hugging feeling of a seat wrapping a passenger's body,
7A and 7B illustrate a correlation between the body pressure generation rate calculated by the hunging judgment unit of the automotive seat control apparatus according to the present invention and the degree of hugging sensation (hugging sense score) calculated by the hugging sense judgment unit, The graph,
8 shows an example of calculating the hugging sense degree (hugging sense score) in the normal mode and the hugging sense degree (hugging sense score) in the sport mode in the hugging sense judgment unit of the automotive seat control apparatus according to the present invention Examples,
9 is a schematic view showing an example in which the angle of the seat back is adjusted by the seat control unit of the automotive seat control apparatus according to the present invention,
10 is a schematic view showing an example in which the bolster volume of the seat back is adjusted by the seat control unit of the automotive seat control apparatus according to the present invention,
11 is a control graph showing a control example in which the bolster volume of the seat back is adjusted by the seat control unit of the automotive seat control apparatus according to the present invention,
12 is a schematic view showing a principle of returning the eye point of the driver to the original position after the angle of the seat back is adjusted by the seat control unit of the automotive seat control apparatus according to the present invention,
13 is a flowchart showing an automobile seat control method according to the present invention.

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

1, the vehicle seat control apparatus according to the present invention includes a measuring unit 10, a traveling mode discriminating unit 20, a hugging sense determining unit 30, a hunging feeling analyzing unit 40 A sheet control unit 50, and the like.

The measuring unit 10 includes a body pressure measuring sensor 12 mounted on the seat back and measuring the body pressure of the driver, a tilt measuring sensor 14 mounted on the seat back for measuring the inclination (angle) of the seat back, And a height sensor 16 mounted on the front and rear suspensions of the vehicle to obtain current tilt information (road inclination angle).

The body pressure measuring sensor 12 has a structure in which a plurality of body pressure sensors are attached to a flexible, thin mat at regular intervals along the transverse and longitudinal directions, and are embedded between the seat back cover and the foam pad.

2, the body pressure measuring sensor 12 is provided in a structure in which the body pressure sensors 15 are attached to the flexible mat 13 in a 3 × 3 arrangement, A first body pressure measuring sensor 12-1 in which a pair of left and right upper and lower end positions are arranged side by side in the front central portion and a body pressure sensor 15 is mounted in a 2x3 arrangement in the flexible mat 13, And a second body pressure measuring sensor 12-2 that is installed at the upper end, the lower end, and the lower end of the bolster 102 formed on both sides of the front face of the seat back 100, respectively.

3, the tilt measurement sensor 14 is built in a predetermined position on the top of the seat back 100 to measure the angle of the seat back, and in particular, And a micro electromechanical system (MEMS) which measures the amount of change in the seat back angle during the sports mode and transmits the measured change amount to the hugging sense judgment unit 30 and the seat control unit 50.

4, the height sensor 16 is mounted at the front and rear suspension positions of the vehicle to measure the current tilt information (road tilt angle) of the vehicle, Unit 30 or the like.

At this time, as shown in FIG. 10, a plurality of air cells 60 connected to a normal air pressure supply means (not shown) are inflated in the inside of the bolster 102 of the seat back 100 The air cell 60 includes an upper air cell 62, an intermediate air cell 64 and a lower air cell 66 which are respectively installed at the upper end, the lower end and the lower end of the bolster 102.

The driving mode determination unit 20 determines whether the current driving mode is the normal mode or the sports mode and recognizes the current driving mode through the driving mode switch operation signal of the driver, The current driving mode is recognized using the navigation information.

For example, the driving mode determination unit 20 recognizes the current driving mode as a sports mode by receiving a signal that the driver has switched the driving mode switch installed in the vicinity of the driver's seat to the sports mode, And recognizes the current running mode as the normal mode.

On the other hand, when the driver turns on the auto driving switch to automatically switch the driving mode of the vehicle to the normal mode or the sports mode, if the vehicle speed is above the critical speed and the traffic condition is smooth and rain information is not received, The running mode automatic switching logic can be executed in which the current running mode is switched to the normal mode when the vehicle speed is less than the critical speed, the traffic condition is not smooth or the rain information is received.

Therefore, the driving mode determination unit 20 determines whether the current driving mode is the normal mode or the sports mode using the driving information from the navigation while the auto driving switch is on, If the vehicle speed is below the critical speed, the traffic condition is not smooth, or the rain information is received, the normal mode is determined.

Referring to FIG. 6, when a back part of a human body is divided into an upper part, a middle part, a lower part, and a back part, Can be distinguished.

However, since each person has different physical condition and different driving posture, the seat can feel different sense of hugging that surrounds the person.

In this study, hugging sensation experiment was performed in consideration of the shoulder height (Sitting-Shoulder Height) and the hip width (Sitting-Hip Breadth) in a seat occupied state for a number of experiment participants having different physical conditions.

That is, after a plurality of participants having different physical conditions were seated on the seat, the measurement values of the pressure measuring sensors incorporated in each seat were analyzed, and the questionnaire about the hugging feeling was evaluated as a score.

As a result of the experiment, it was judged that the sense of hugging was better as the body pressure became broader and more uniform, and the sense of hugging was felt more as the body pressure of the middle-back and back-side increased. The ratios of body pressure to the back-side and back-side and the unevenness of the body pressure can be used as the hugging gauges.

Based on the results of the experiment, the hugging determination unit 30 calculates the body pressure information transmitted from the first body pressure measurement sensor 12-1 and the second body pressure measurement sensor 12-2 of the measurement unit 10 The hugging sensation scale is used to calculate the hugging sensation scale that the seat covers the driver, and the ratios of the body pressure of the driver's middle-back and back-side and the unevenness of the pressure generation are calculated.

The PAR (Pressure Appearance Ratio) may be calculated as a ratio of a body pressure sensor that generates an actual body pressure sensing signal as compared to the total body pressure sensor that can be in contact with the middle of the body of the driver compared to the whole body pressure sensor, The PAUE (Pressure Appearance UnEvenness) can be calculated using the coefficient of variation (CV) of the body pressure sensing change of the whole body pressure sensor that can touch the back side of the driver's body have.

In addition, the hugging impression judgment unit 30 calculates the hugging sensation scale as described above, and then uses the calculated hugging sensation scale to calculate the mid-back of the driver's body in the normal mode and the back- ) Is calculated as a numerical value (e.g., score).

7A and 7B, the hugging sensitivity score can be set to be higher as the body pressure generation rate is higher as the hugging sensation scale. When the body pressure generation rate is lower, the hugging sensation score (score) (Score) can be set higher as the degree of unevenness of the body pressure is lower, and the degree of hugging sensation (score) can be set lower as the degree of unevenness of the body pressure is higher.

For example, the method of calculating the degree of hugging sensation (score) may be based on the following equation (1), which is the ratio between the middle pressure of the driver and the back pressure of the back pressure side, Stepwise regression results can be applied to the PAU, and the hugging sense can be evaluated using a score of 100 or a CR (consistency index) score through the questionnaire.

As a result, an example of calculating the degree of hugging of the mid-back and back-side of the body of the driver in the normal mode in the hugging impression judgment unit 30 by numerical value (e.g., score) The hugging sensation is quantified by 50 points of the hugging sense of the mid-back, 50 points of the hugging sense of the back side, and 100 points of the total 100 points as shown in the left part of the attached table of FIG. can do.

On the other hand, when the current vehicle travels on a downhill or uphill road, the driver's mid-back and back-side pressure increase and decrease may occur, and the degree of hugging may vary.

If the vehicle is determined to be downhill or uphill after obtaining the current tilt information of the vehicle from the height sensor 16 mounted on the front and rear suspensions of the vehicle at the hugging determination portion 30, the downhill slope angle or the ascent slope angle The degree of hugging sensation can be calculated numerically by considering the increase and decrease in the pressure of the driver's mid-back and back-side.

For example, as shown in Equation (2) below, depending on the increase and decrease in the body pressure of the mid-back and back-side of the driver according to the road inclination angle? The depression amount can be derived by assuming the linearity of the generation of the pressure due to the road inclination angle, and the road inclination angle does not affect the PAUE.

If the current driving mode is determined to be the sports mode, the hugging / analyzing unit 40 determines whether the vehicle is in the mid-back state or the back-side state in the normal mode provided from the hugging sense judgment unit 30. [ The degree of hugging is changed (increased) to the target level for the sport mode hugging sense.

More specifically, it is necessary to provide a hugging feeling and a supporting force that more closely surrounds the driver's body in order to provide a seat seated feeling suitable for high-speed driving in the sports mode operation, (Score) at the time of the mode is changed (increased) to the target level which is increased (increased) more than the degree of hugging (score) at the normal mode.

An example in which the hugging sense degree of the mid-back and back-side in the normal mode in the hugging / analyzing unit 40 is increased to the target level for the sense of hugging in the sports mode is shown in the accompanying drawings As shown in the right part of Table 8.

In this case, considering the high-speed driving at the time of sports mode, since the support of the back side is more important than the mid-back, the hugging sense score increase width of the back side is set to be larger than the hugging sense score increase width .

The seat control unit 50 controls the seat back angle and seat angle according to the hugging sensation in the normal mode provided by the hugging impression judgment unit 30 and the hugging sensation sensed in the sports mode provided by the hugging / Adjust the white bolster volume.

Preferably, the seat back angle is controlled by an electric reclining device in accordance with the control signal of the seat control section 50, and the seat back bolster volume is regulated through pneumatic control for a plurality of air cells embedded in the bolster.

For example, referring to FIG. 9, if the hugging sense score for the mid-back in the normal mode provided from the hugging sense judgment unit 30 to the seat control unit 50 is 30, If the hugging sense score for the mid-back in the sports mode provided to the seat controller 50 by the hugging analysis unit 40 is 45, the angle of the seat back is adjusted to 23 degrees, Is adjusted to 30 °, which is the optimum angle in the mode.

For example, referring to FIG. 10, if the hugging sense score for the back side portion in the normal mode provided from the hugging sense judgment unit 30 to the seat control unit 50 is 15, The intermediate air cell 64 is adjusted to the intermediate expansion, and the lower air cell 66 is adjusted to the minimum expansion, the air supply amount for each air cell is adjusted.

The upper air cell 62 built in the bolster 102 may have a hugging sense score of 40 when the side control unit 50 is provided to the seat control unit 50 in the sports mode, The air supply amount to each air cell is adjusted so that the maximum expansion, the maximum expansion of the middle air cell 64, and the maximum expansion of thelower air cell 66 are adjusted.

Considering that air supply (intake) and exhaustion to the air cell 60 must be smoothly performed when the running mode of the vehicle is switched to the normal mode or the sports mode, At the time when the running mode of the vehicle changes from the normal mode to the sport mode, the air supply (intake) to the air cell 60 progresses for about three seconds after about three seconds, It is preferable to allow the air evacuation to proceed to the air cell 60 for about 2 seconds after 3 seconds.

Thus, by providing the optimal hugging feeling that stably surrounds the driver through the expansion of the air cell in the seat back during the sport mode, the driver can feel the seat seated feeling as if he / she is seated in the sports car in the sports mode, It is possible to provide driving stability and driving stability.

In the sport mode, the body of the driver moves toward the direction of centrifugal force and inertia when the vehicle is accelerating or turning. The angle of the seat back is changed to a position for giving a sense of hugging and the air cell in the bolster is inflated, It is possible to provide a posture and seat seated feeling.

On the other hand, when the normal mode is switched to the sports mode and the angle of the seat back is adjusted to be further inclined backward, the eye point of the driver is changed, so that the viewing angle of the indoor room mirror and the outdoor side mirror can be changed.

Therefore, it is preferable for the driver's safety to return the driver eye point changed after the seat back angle adjustment to the eye point before the seat back angle adjustment.

To this end, as shown in FIG. 12, an eye tracking device 70 is mounted at a predetermined position on the front of the driver's seat to detect driver's eyes before and after adjustment of the seat back angle.

Preferably, the eye tracking device 70 can be adopted as a digital camera or the like capable of recognizing the driver's eye point as a predetermined coordinate value.

The eye tracking device 70 transmits a signal for returning the eye point after the seat back angle adjustment to the eye point before the seat back angle adjustment to the seat control unit 50, The driver's eye point can be returned to the eye point before the seat back angle adjustment by adjusting the X axis (forward and backward direction) and Z axis position (vertical direction) of the electric seat cushion by the control signal of the seat control unit 50 .

More particularly, the method includes the steps of sensing a driver's eye point before the seat back angle adjustment in the eye tracking device 70, detecting a driver's eye point after the seat back angle adjustment in the eye tracking device 70, Analyzing a difference between a coordinate value of the driver's eye point before the seat back angle adjustment and a coordinate value of the driver's eye point after the seat back angle adjustment; (For example, an analyzed coordinate value difference signal) to the eye point of the electric seat cushion, based on a control signal from the seat control unit 50; ) And the Z-axis position (up-and-down direction) are adjusted by the difference of the coordinate values, the driver's eye point is adjusted to the position Trojan can be easily returned.

Alternatively, as another method for returning the driver's eye point to the eye point before the seat back angle adjustment, an eye point estimation equation may be used.

That is, as another method for returning the driver's eye point to the eye point before the seat back angle adjustment, an eye point estimation equation based on the driver's human body information and the seat back angle information can be used. The driver's eye point can be easily returned to the eye point before the seat back angle adjustment by controlling the adjustment of the X-axis (front-rear direction) and Z-axis position (vertical direction) of the electric seat cushion after estimating the eye point variation amount .

On the other hand, if the air pressure of the air cell is higher than a certain level so that the bolster is inflated in accordance with the normal mode or the sport mode, if the air pressure for the plurality of air cells built in the bolster is higher than a certain level, It may cause inconvenience.

The seat control unit 50 performs pneumatic exhaust control for a plurality of air cells incorporated in the bolster for a predetermined time for ease of getting off the driver at the time of getting off the driver and stores the air cell pressure before the exhaust control in the memory unit .

For example, the pneumatic exhaust control for the air cell at the time of getting off the driver is performed when the sensed value of the Bolster pressure measurement sensor (not shown) built in the bolster is less than a certain level or after a certain time from the engine start-off time.

More specifically, the seat control unit 50 determines that the driver intends to get off the vehicle if the sensed value of the bolster pressure sensor is below a predetermined level, or determines that the driver intends to get off the vehicle after a predetermined time from the engine start- And the pneumatic exhaust control for the air cell is performed for a predetermined time (for example, the time until the pneumatic pressure of the air cell becomes the minimum critical level).

Therefore, the driver and the passenger can get off easily without interference by the bolster.

On the other hand, the seat control unit 50 performs intake control for returning the air pressure to the air cell to the pressure before the exhaust control for the welcome function at the time of the driver's re-entry.

For example, the pneumatic inspiration control for the air cell at the time of re-entering the driver is performed when the sensed value of the bolster pressure measuring sensor (not shown) separately built into the bolster is above a certain level or after a certain time from the start-up of the engine.

More specifically, the seat controller 50 determines whether the driver intends to get off the vehicle if the sensed value of the bolster pressure sensor is higher than a predetermined level, And the pneumatic intake control for the air cell is performed for a predetermined time (for example, until the air cell pressure before the exhaust stored in the memory portion of the seat control unit is reached).

Accordingly, the driver can feel comfortable seat comfort with the welcome function due to the expansion of the bolster.

Meanwhile, the seat controller 50 determines whether the current driving mode is the normal mode or the sports mode, and the information on the bolster operation and the pressure state of the seatback and the seat cushion through the CAN communication, Navigation controller, and the information transmitted is displayed on the display by the AVN controller, so that the driver can visually recognize the current driving information and the bolster operation information.

Hereinafter, the seat control method of the present invention based on the above-described configuration will be described in detail with reference to the flowchart of FIG.

The body pressure of the driver is measured by the body pressure measuring sensor 12 of the measuring unit 10 and transmitted to the hunging sensation discriminating unit 30. The angle of the seat back is measured by the inclination measuring sensor 14, 50 and transmits the current tilt information (road inclination angle) of the vehicle from the height sensor 16 to the hugging sense judgment unit 30. [

At this time, the driving mode determination unit 20 determines whether the current driving mode is the normal mode or the sports mode, and transmits the determined driving mode to the hunging feeling determination unit 30 and the hunging feeling analysis unit 40.

Next, the hugging impression determination unit 30 calculates a hugging sensation scale based on the body pressure information from the measurement unit 10. [

As described above, the pressure apparent ratio (PAR) can be calculated as the ratio of the body pressure sensor that generates the actual body pressure sensing signal as compared to the total body pressure sensor that can touch the middle of the body of the driver compared to the whole body pressure sensor, The PAUE (Pressure Appearance Unevenness) of the body pressure can be calculated by using the coefficient of variation (CV) of the body pressure sensing of the whole body pressure sensor that can touch the back side of the driver's body Can be calculated.

Subsequently, in the normal mode, the hugging sensation degree (score) of the mid-back and back-side of the driver's body is calculated using the hugging sensation scale calculated in the hugging sense judgment unit 30 Calculated as a number.

As described above, the hugging sense degree of the mid-back and back-side of the driver's body in the normal mode is calculated by the hugging sense judgment unit 30 as numerical values An example is shown in the left part of the accompanying table of FIG. 8, and the hugging sense of the mid-back 50 points, the hugging sense 50 of the back side, The degree of hugging is calculated numerically.

If the current driving mode is determined to be the sports mode, the hugging / sensing unit 40 determines the mid-back state and the back-side state in the normal mode provided from the hugging sense judgment unit 30, Is increased to the target level for the sense of hugging in the sports mode.

As described above, the hugging sense degree of the mid-back and back-side in the normal mode is increased to the target level for the sense of sport mode hugging in the hugging sense analyzer 40 An example is shown in the right part of the accompanying table of FIG. 8, and considering the high-speed travel in the sports mode, the back side support is more important than the mid-back, It is preferable to set the width to be larger than the hugging sense score increase width such as the middle.

Next, the seat controller 50 compares the current hugging sense score in the normal mode provided by the hugging impression judgment unit 30 with the current hugging sense score in the sports mode provided by the hugging sense unit 40, Adjust the angle of the seat back and the volume of the seat back bolster according to the degree of sensitivity (score).

For example, if the hugging sense score for the mid-back in the normal mode provided from the hugging appraisal unit 30 to the seat controller 50 is 30, the angle of the seat back is adjusted to 23 degrees (See FIG. 9). When the hugging sense score for the back side portion in the normal mode provided from the hugging sense judgment unit 30 to the seat control unit 50 is 15 points, The air supply amount for each air cell is adjusted so that the upper air cell 62 is expanded to the maximum, the middle air cell 64 is expanded to the medium expansion, and the lower air cell 66 is to be the lowest expansion (see FIG. 10).

Thus, the driver can maintain a stable running posture in accordance with the seat back angle and the amount of bolster expansion suitable for the user in the normal mode.

For example, if the hugging sense score for the mid-back in the sports mode provided to the seat control unit 50 by the hugging sense unit 40 is 45, the angle of the seat back is the optimal (See FIG. 9), and when the hugging sense score for the back side portion in the sports mode provided to the seat control unit 50 in the hugging feeling analysis unit 40 is 40 points The air supply amount for each air cell is adjusted so that the upper air cell 62 built in the bolster 102 becomes the maximum expansion, the middle air cell 64 becomes the maximum expansion, and the lower air cell 66 becomes the maximum expansion (see FIG.

Thus, by providing the optimal hugging feeling that stably surrounds the driver through the expansion of the air cell in the seat back during the sport mode, the driver can feel the seated seat feeling as if he / she is seated in a sports car, and accordingly, stable and dynamic driving It is possible to provide stability and driving stability.

10:
12: Pressure sensor
12-1: First body pressure measuring sensor
12-2: Second body pressure measuring sensor
13: Flexible Mat
14: tilt measurement sensor
15: Pressure sensor
16: Height sensor
20: traveling mode discrimination unit
30:
40:
50:
60: Air cell
62: Upper air cell
64: Medium air cell
66: Lower air cell
70: Eye tracking device
100: Seatback
102: Bolster

Claims (20)

A measuring unit including a body pressure measuring sensor for measuring the body pressure of the driver and a tilt measuring sensor for measuring the inclination of the seat back;
A traveling mode discrimination unit for discriminating a current traveling mode;
The hugging sensation scale is calculated based on the body pressure information from the measuring unit and the hugging sensation of the mid-back and back-side of the driver's body in the normal mode is calculated using the calculated hugging sensation scale. A hugging sense judgment unit for calculating the degree of hugging sensation by a numerical value;
If the current driving mode is determined to be the sports mode, the hugging sense degree of the mid-back and back-side in the normal mode provided from the hugging sense judgment unit is set as a target for hugging A hugging feeling analyzing unit for changing the hugging level to a predetermined level; And
A seat controller for adjusting an angle of the seat back and a seat back bolster volume according to a sense of hugging in the normal mode and a sense of hugging in the sports mode provided by the hugging /
And a controller for controlling the seat of the vehicle.
The method according to claim 1,
The body pressure measuring sensor is built in between a seat back cover and a foam pad, and has a structure in which a pressure sensor is attached in a 3 × 3 arrangement on a flexible mat, and a pair of the upper, And a second body pressure measuring sensor which is provided in a structure in which a body pressure sensor is attached in a 2x3 array on a flexible mat and is built in the top, And a control unit for controlling the vehicle seat.
The method according to claim 1,
Wherein the tilt measuring sensor is incorporated in a predetermined position of the seat back and is adopted as a kind of MEMS sensor for measuring the seat back angle information in the normal mode and the seat back angle change amount in the sports mode.
The method according to claim 1,
Wherein the measuring unit further comprises a height sensor mounted on the front and rear suspensions to obtain the current tilt information of the vehicle.
The method according to claim 1,
Wherein the driving mode determining unit determines the current driving mode of the vehicle as the normal mode or the sports mode based on the driving mode selection signal from the driving mode switch or the navigation information from the navigation with GPS.
The method of claim 5,
Wherein the driving mode determination unit determines whether the current driving mode is the normal mode or the sports mode using the driving information from the navigation while the auto driving switch is on, And determines that the vehicle is in the normal mode when the vehicle speed is less than the threshold speed, the traffic condition is not smooth or the rain information is received.
The method according to claim 1,
Wherein the hugging sensation scale is calculated using body pressure information from the measuring unit and is determined to be a ratio of the body pressure in the middle part of the body of the driver and the back side and a degree of unevenness in the body pressure.
The method of claim 7,
Wherein the body pressure generating rate is calculated as a ratio of a body pressure sensor that generates an actual body pressure sensing signal with respect to the whole body pressure sensor capable of reaching the middle of the driver's body, Wherein the body pressure sensing fluctuation of the sensor is calculated using a variation coefficient (standard deviation / average) method.
The method according to claim 1,
A driver's eye point before and after the seat back angle adjustment is sensed and a signal for returning the eye point after the seat back angle adjustment to the eye point before the seat back angle adjustment is transmitted to the seat control unit, And an eye tracking device for adjusting the Z-axis position.
The method according to claim 1,
The seat control unit performs pneumatic exhaust control for a plurality of air cells built in the bolster for a certain period of time for ease of getting off the driver and performs intake control for returning the air pressure to the air cell to the pre- And a control device for controlling the seat of the vehicle.
The method of claim 10,
The exhaust control is performed until the sensing value of the bolster pressure measuring sensor is less than a predetermined level or a predetermined time after the start of the engine is turned off and the intake control is performed until the air cell pressure before the exhaust stored in the memory of the seat control unit is reached Wherein the seat is a seat.
I) measuring the body pressure of the driver in the body pressure measuring unit of the seat back;
Ii) determining whether the current driving mode is the normal mode or the sports mode in the driving mode determination unit;
(Iii) The hugging sensory evaluation unit calculates the hugging sensation scale based on the body pressure information from the measurement unit and calculates the mid-back and backside parts of the driver's body in the normal mode using the calculated hugging sensation scale Calculating a degree of hugging of the back-side by a numerical value;
(Iv) If the current driving mode is determined to be the sports mode, the hugging sense analyzing unit determines the hugging sense degree of the mid-back and back-side in the normal mode provided from the hugging sense judgment unit, Changing a target level for a sense of hugging in a mode; And
Adjusting a seat back angle and a seat back bolster volume according to a hugging sensation in a normal mode provided by the haptic sensation determining unit and a hugging sensation sensation in a sports mode provided by the hugging sensation analyzer in a seat control unit;
And a control unit for controlling the seat.
The method of claim 12,
In the step (ii), the driving mode determining unit may determine whether the current driving mode is the normal driving mode or the sports driving mode using the driving information from the navigation while the auto driving switch is on, When the vehicle speed is below the threshold speed or when the traffic condition is not smooth or when the rain information is received, it is determined that the vehicle mode is the normal mode, Way.
The method of claim 12,
Wherein the hugging sensation scale is calculated using the body pressure information from the measuring unit and is determined to be a ratio of the body pressure of the middle part of the body of the driver and a back pressure of the body part of the driver, Way.
15. The method of claim 14,
Wherein the body pressure generating rate is calculated as a ratio of a body pressure sensor that generates an actual body pressure sensing signal with respect to the whole body pressure sensor capable of reaching the middle of the driver's body, Wherein the body pressure sensing fluctuation of the sensor is calculated using a variation coefficient (standard deviation / average) method.
The method of claim 12,
In the step (iii), after the current tilt information of the vehicle is obtained from the height sensor attached to the front and rear suspensions of the vehicle, the hugging impression determining unit determines whether the vehicle is downhill or uphill, Wherein the degree of hugging sensation is calculated numerically in consideration of the increase and decrease of the body pressure of the mid-back and back-side of the driver.
The method of claim 12,
In the step (v), the seat back angle is controlled by an electric reclining device that receives the signal of the seat control unit, and the seat back bolster volume is controlled by pneumatic control for a plurality of air cells built in the bolster Wherein the vehicle seat control method comprises:
The method of claim 12,
Detecting the driver eye point before the seat back angle adjustment in the eye tracking apparatus before the step (v)
Detecting the driver eye point after the seat back angle adjustment in the eye tracking apparatus after the step (v)
Transmitting a signal for returning the eye point after the seat back angle adjustment to the eye point before the seat back angle adjustment to the seat control section;
The X-axis and Z-axis positions of the electric seat cushion are adjusted by the seat control unit, thereby returning the driver eye point to the eye point before the seat back angle adjustment,
Further comprising the steps of:
The method of claim 12,
Wherein the seat control unit performs pneumatic exhaust control for a plurality of air cells built in the bolster for a predetermined period of time for ease of getting off the driver when the driver gets off the car and returns the air pressure to the air- Is performed on the basis of the control signal.
The method of claim 19,
The exhaust control is performed until the sensing value of the bolster pressure measuring sensor is less than a predetermined level or a predetermined time after the start of the engine is turned off and the intake control is performed until the air cell pressure before the exhaust stored in the memory of the seat control unit is reached Wherein the seat is a seat.

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