KR20190068686A - Vehicle and control method thereof - Google Patents

Abstract

The present invention provides a vehicle and a control method thereof, wherein a driver can use less brake pedal by decelerating the vehicle based on position information of an overspeed camera. According to an embodiment, the vehicle comprises: a sensor unit for obtaining a speed of the vehicle; a driving unit for adjusting a shift stage of the vehicle; a communication unit for receiving terrain information including information of at least one overspeed camera and the position information of the vehicle; and a control unit for determining a control section of the overspeed camera using information of the overspeed camera and controlling the driving unit to decelerate the vehicle when the vehicle approaches the control section.

Description

VEHICLE AND CONTROL METHOD THEREOF FIELD OF THE INVENTION [0001]

The present invention relates to a vehicle for decelerating and controlling a vehicle using navigation information and a control method therefor.

The automatic transmission is a device that automatically controls the speed change stage in accordance with the driving situation and the driver's will to maintain the driver's convenience even when the shift lever is fixed. The speed change stage of the automatic transmission is determined by the shift pattern input to the TCU. The shift change pattern consists of two axes, the vehicle speed and the accelerator pedal opening amount. The speed change stage is determined according to the driving situation represented by the vehicle speed and the driver's acceleration determined by the accelerator pedal opening amount.

In the conventional speed-change-speed control system, the road conditions are not taken into account, so vehicle speed control based on road conditions is determined only by the driver's accelerator pedal and brake operation. Therefore, if there is a facility such as a speed camera on the road on which the vehicle is traveling, the driver frequently controls the brake pedal to braking the vehicle, and the driver's fatigue is increased.

The present invention provides a vehicle in which the driver can use less brake pedal by decelerating the vehicle based on the position information of the overspeed camera, and a control method thereof.

A vehicle according to an embodiment includes: a sensor unit for obtaining a speed of the vehicle; A driving unit for adjusting a speed change stage of the vehicle; A communication unit for receiving the terrain information including the information of at least one overspeed camera and the position information of the vehicle; And a controller for determining an intermittent interval of the at least one overspeed camera using information of the at least one overspeed camera and controlling the driver to decelerate the vehicle when the vehicle approaches the intermittent interval do.

The control unit may determine a predetermined limit speed corresponding to the at least one overspeed camera intermittent interval, and may start the deceleration control when the speed of the vehicle exceeds the limit speed.

The control section may change the gear stage based on a difference between the speed of the vehicle and the predetermined limit speed.

The control unit may determine the maximum change range of the speed change stage of the vehicle based on the speed of the vehicle.

The control unit may determine an inclination of the intermittent section based on the terrain information and determine an allowable speed of the vehicle based on the inclination of the intermittent section.

The control unit may control the drive unit to decelerate the vehicle when the speed of the vehicle exceeds the allowable speed.

The vehicle according to an embodiment further includes a pedal input unit receiving a braking input signal of the vehicle,

The control unit may stop the deceleration control when the user inputs the braking signal through the pedal input unit.

The control unit may stop the deceleration control of the vehicle when the vehicle leaves the intermittent interval.

A vehicle control method according to an embodiment includes the steps of acquiring a speed of a vehicle, receiving terrain information including at least one overspeed camera information and position information of the vehicle, and using information of the at least one overspeed camera Determining an intermittent interval of the at least one overspeed camera, and controlling the driving unit to decelerate the vehicle when the vehicle approaches the intermittent interval.

Decelerating the vehicle may include determining a predetermined limit speed corresponding to the at least one overspeed camera intermittent interval and starting the deceleration control when the speed of the vehicle exceeds the limit speed have.

The decelerating control of the vehicle may change the speed change stage based on a difference between the speed of the vehicle and the predetermined limit speed.

The deceleration control of the vehicle may include determining a maximum change range of the speed change stage of the vehicle based on the speed of the vehicle.

The deceleration control of the vehicle may include determining an inclination of the intermittent section based on the terrain information and determining an allowable speed of the vehicle based on the inclination of the intermittent section.

The deceleration control of the vehicle may include decelerating control of the vehicle when the speed of the vehicle exceeds the allowable speed.

Further comprising: receiving a braking input signal of the vehicle;

The deceleration control of the vehicle may further include stopping the deceleration control when the user inputs the braking signal

The deceleration control of the vehicle may include stopping the deceleration control of the vehicle when the vehicle leaves the intermittent interval.

A vehicle and its control method according to an embodiment can reduce the brake pedal by reducing the speed of the vehicle based on the position information of the overspeed camera.

1 is a view showing an appearance according to an embodiment.
2 is a view showing the interior of a vehicle according to an embodiment.
3 is a control block diagram of a vehicle according to an embodiment of the present invention.
4 is a view showing a vehicle traveling through a overspeed camera according to an embodiment of the present invention.
5 is a view showing the position of the overspeed camera according to one embodiment.
6 is a view for showing an operation when the vehicle is positioned on an inclined plane according to an embodiment.
7 is a flowchart according to an embodiment.

Like reference numerals in the drawings denote like elements throughout the specification. The description does not describe all the elements of the embodiments, and redundant descriptions are omitted from the general contents or embodiments in the technical field to which the present invention belongs. The term 'part, module, member, or block' used in the specification may be embodied in software or hardware, and a plurality of 'part, module, member, and block' may be embodied as one component, It is also possible that a single 'part, module, member, block' includes a plurality of components.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only the case directly connected but also the case where the connection is indirectly connected, and the indirect connection includes connection through the wireless communication network do.

Also, when an element is referred to as "comprising ", it means that it can include other elements as well, without departing from the other elements unless specifically stated otherwise.

Throughout the specification, when a member is located on another member, it includes not only when a member is in contact with another member but also when another member exists between the two members.

The terms first, second, etc. are used to distinguish one element from another, and the elements are not limited by the above-mentioned terms.

The singular forms " a " include plural referents unless the context clearly dictates otherwise.

In each step, the identification code is used for convenience of explanation, and the identification code does not describe the order of the steps, and each step may be performed differently from the stated order unless clearly specified in the context. have.

Hereinafter, the working principle and embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a view showing an appearance according to an embodiment.

Referring to Fig. 1, a vehicle 1 may include a vehicle body 10 that forms an appearance, wheels 12 and 13 that move the vehicle 1, and the like.

The vehicle body 10 includes a hood 11a for protecting various devices necessary for driving the vehicle 1 such as an engine, a roof panel 11b for forming an interior space, a trunk lid 11c provided with a storage space, A front fender 11d and a quarter panel 11e. A plurality of doors 15 joined to the vehicle body by a white paper may be provided on the side surface of the vehicle body 11. [

A front window 19a is provided between the hood 11a and the roof panel 11b to provide a view of the front of the vehicle 1 and a rear window is provided between the roof panel 11b and the trunk lid 11c A rear window 19b may be provided. Further, on the upper side of the door 15, a side window 19c for providing a side view can be provided.

A headlamp 15 for illuminating the vehicle 1 in the traveling direction of the vehicle 1 may be provided in front of the vehicle 1. [

A turn signal lamp 16 for indicating the traveling direction of the vehicle 1 may be provided on the front and rear of the vehicle 1. [

The vehicle 1 can flicker the direction indicator lamp 16 and display it in the traveling direction thereof. Further, a tail lamp 17 may be provided at the rear of the vehicle 1. [ The tail lamp 17 is provided behind the vehicle 1 and can display the gear shift state of the vehicle 1, the brake operation state, and the like.

At least one vehicle control unit 500 may be provided in the interior of the vehicle 1. The vehicle control unit 500 may perform a function of performing electronic control relating to the operation of the vehicle 1. [ The vehicle control unit 500 may be installed at an arbitrary position inside the vehicle 1 according to the designer's selection. For example, the vehicle control unit 500 may be installed between the engine room and the dashboard, or may be provided inside the center fascia. The vehicle control unit 500 may include at least one processor that receives an electrical signal, processes the input electrical signal, and outputs the processed electrical signal. At least one processor may be implemented with at least one semiconductor chip and associated components. At least one semiconductor chip and related parts are installed on a printed circuit board that can be installed inside the vehicle 1. [ Also, the vehicle 1 is provided with a video camera 130, and can acquire an image necessary for autonomous driving of the vehicle.

2 is a view showing the interior of a vehicle according to an embodiment.

2, the vehicle 1 includes a dashboard 400, a center fascia 410 extending from the dashboard 400, a gear box 420 installed at the lower end of the center fascia 410, And a console box 430 installed at the rear end of the box 420 may be provided.

The dashboard 400 provides a function of distinguishing the internal space of the engine room 5 from the internal space of the vehicle 1. The dashboard 400 may include a steering wheel 161, an instrument panel 122, an exhaust port 401, and the like.

The steering wheel 161 may be installed in the vicinity of the driver's seat 163 on the dashboard 400. The steering wheel 161 may include a rim and rim held by the driver and a spoke connecting the hub of the steering device of the vehicle located on the rotational axis for steering. The driver can adjust the running direction of the vehicle 1 by changing the traveling direction of the wheel by rotating the spoke by operating the rim. Also, the spokes may be provided with various input units for controlling the radio apparatus, the vehicle communication apparatus or the instrument panel 122 and the like. The spokes may be provided with input spokes, such as a scroll wheel, a button, a knob, a touch screen, a touch pad, a lever, a trackball, a motion sensor or a voice recognition sensor.

The instrument panel 122 can display the running speed, engine speed or fuel remaining amount of the vehicle 1, travelable distance, and the like. The dashboard 122 may be generally mounted on the rear dashboard 400 of the steering wheel 100. Depending on the embodiment, the instrument panel 122 may be installed at various locations on the dashboard 400 or at various locations, such as the center fascia 410. The exhaust port 410 can control the temperature inside the vehicle body by discharging air of a certain temperature into the vehicle 1 according to the operation of the air conditioner. The exhaust port 401 can be installed at various positions of the dashboard 400. For example, the exhaust port 401 may be installed on both sides of the display 121 as shown in FIG.

The display 121 may be installed in an upper frame of the dashboard 300. The display 121 can output various images such as a moving image and a still image and provide it to a user. The display 121 can display information necessary for operation or the like as an image. For example, the display 121 can display a map around the vehicle or a travel path of the vehicle 1. [ The display 121 may be, for example, a navigation device. The display 121 may include an exterior housing for securing the display panel and the display panel. A fixing means (not shown) for fixing the vehicle interior 1 to a predetermined position, for example, the dashboard 400 may be provided on a side surface or a rear surface of the exterior housing. In the case where the display 121 is provided at the upper end of the dashboard 400, the display 121 can be installed at various positions in the vehicle 1, so that other passengers other than the driver can check the contents of the screen.

The center fascia 410 may be located between the dashboard 400 and the gearbox 420. The center fascia 410 includes at least one of a scroll wheel, a button, a knob, a touch screen, a touch pad, a lever, and a track ball, which can input various commands for a user such as a driver or a passenger to operate various functions of the vehicle 1 One can be included. The center fascia 410 may be provided at the lower end thereof with a gear box 420 in which a gear device is installed. The gear box 420 may be provided with a gear rod 421 for gear change. The gear box 420 may be provided with an input unit for inputting various commands for operating various functions of the vehicle 1 by the driver.

A console box 430 may be provided at a rear end of the gear box 420. The console box 430 may be provided with a predetermined space for storing various objects.

The vehicle 1 can also be provided with an audio function, a video function, a navigation function, and other functions via the speaker 123 The sound necessary for performing the function can be outputted.

In addition to a speaker 123 that outputs sound to the inside of the vehicle 1, at least one speaker for outputting sound to the outside is provided, and various sounds for recognizing the vehicle 1 to a driver of a pedestrian or other vehicle are output .

3 is a control block diagram of a vehicle according to an embodiment of the present invention.

3, the vehicle may include a sensor unit 600, a driving unit 700, a communication unit 800, and a control unit 500.

The sensor unit 600 can acquire the speed of the vehicle. The sensor unit 600 may include a wheel speed sensor provided in the vehicle. There is a wheel sensor on each wheel of the vehicle, analyzing the information sensed here, and if one wheel is locked, only that wheel is pumped to maintain the balance of the four wheels. Therefore, the skid phenomenon of the vehicle does not occur, the steering force is not lost, the wheel is not locked, and the braking distance is much shorter.

The wheel speed sensors are installed in each of the four front and rear wheels, and detect the rotation speed of the wheel by a tone wheel and a magnetic line change in the sensor, and input them to the computer.

The driving unit 700 can adjust the speed change stage of the vehicle. The driving unit 700 can control the speed change stage to utilize the engine brake. The engine brake selects the gears that are lower than the running speed in a stepwise manner, and the braking force is obtained by increasing or decreasing the accelerator pedal depression state by applying frictional resistance and power loss.

The communication unit 800 may receive the terrain information including the information of at least one overspeed camera and the position information of the vehicle.

The communication unit 800 may include one or more components that enable communication with an external device, and may include at least one of a short-range communication module, a wired communication module, and a wireless communication module, for example. In addition to the Wifi module and the wireless broadband module, the wireless communication module may be a GSM (Global System for Mobile Communication), a CDMA (Code Division Multiple Access), a WCDMA (Wideband Code Division Multiple Access) ), Time Division Multiple Access (TDMA), Long Term Evolution (LTE), and the like. The wireless communication module may include a wireless communication interface including an antenna and a receiver for receiving driving environment data. The wireless communication module may further include a conversion module for demodulating the analog type wireless signal received through the wireless communication interface into a digital control signal.

The control unit 500 determines an intermittent interval of the at least one overspeed camera using the information of the at least one overspeed camera and controls the driving unit 700 when the vehicle approaches the intermittent interval, Deceleration control can be performed.

The control unit 500 may determine a predetermined limit speed corresponding to the at least one overspeed camera intermittent interval and may start the deceleration control when the speed of the vehicle exceeds the limit speed. The control unit 500 may change the speed change stage based on the difference between the speed of the vehicle and the predetermined limit speed. The control unit 500 can determine the maximum change range of the speed change stage of the vehicle based on the speed of the vehicle. The control unit 500 may determine the slope of the intermittent interval based on the topographic information and determine the allowable speed of the vehicle based on the slant of the intermittent interval. The control unit 500 may control the driving unit 700 to decelerate the vehicle when the speed of the vehicle exceeds the allowable speed.

The vehicle according to an exemplary embodiment may further include a pedal input unit 800 receiving the braking input signal of the vehicle.

The pedal input unit 800 may be provided inside the vehicle. The user can input an acceleration signal through the pedal input unit 800, but can input a deceleration signal. When the driver inputs the braking signal through the pedal input unit 800, the direct driver performs the braking control. Therefore, when the user inputs the braking signal through the pedal input unit 800, the control unit 500 performs the deceleration control You can stop.

The control unit 500 may stop the deceleration control of the vehicle when the vehicle leaves the intermittent interval. The control unit 500 includes a memory (not shown) for storing data for a program reproducing an algorithm or algorithm for controlling the operation of components in the vehicle, and a processor (not shown) for performing the above- Not shown). At this time, the memory and the processor may be implemented as separate chips. Alternatively, the memory and the processor may be implemented on a single chip.

The control unit 500 may be a nonvolatile memory device such as a cache, a read only memory (ROM), a programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM) A random access memory) or a storage medium such as a hard disk drive (HDD) or a CD-ROM, but the present invention is not limited thereto.

At least one component may be added or deleted corresponding to the performance of the components of the vehicle shown in Fig. It will be readily understood by those skilled in the art that the mutual position of the components can be changed corresponding to the performance or structure of the system.

Meanwhile, each of the components shown in FIG. 3 refers to hardware components such as software and / or a Field Programmable Gate Array (FPGA) and an Application Specific Integrated Circuit (ASIC).

FIG. 4 is a view showing that the vehicle travels through the overspeed camera P1 according to the embodiment of the present invention, and FIG. 5 is a view showing the positions P1 to P5 of the overspeed camera according to an embodiment.

Referring to FIGS. 4 and 5, at least one overspeed camera can be positioned P1 while the vehicle is running. The vehicle can receive the position P1 of the overspeed camera through the communication unit 800. [ The driver usually uses the brake pedal to apply the brakes to the car when the overspeed camera is located. However, such frequent control of the brake pedal can provide inconvenience to the driver. Therefore, the vehicle can receive position information of the overspeed camera. Also, the vehicle can determine the intermittent interval Z1 based on the position of the overspeed camera. When the vehicle travels at a speed higher than the limit speed in the intermittent section, the speed of the vehicle can be reduced by controlling the speed change stage.

According to one embodiment, the vehicle can be controlled so that the current speed of the vehicle is one step lower than the current speed limit when the speed exceeds 10 km / h. If the vehicle is currently traveling at speeds above 20 km / h, it can be controlled to reduce it by two steps at the current gear stage. The vehicle can reduce the speed change stage based on the difference between the current running speed of the vehicle and the limit speed of the intermittent interval

According to another embodiment, the vehicle can determine the maximum change range of the gear range of the vehicle based on the current running speed of the vehicle. That is, if the vehicle is shifted to an excessive range during traveling, the engine RPM may vary greatly, so that the engine may operate unreasonably. Therefore, the range of change of the speed change stage can be adjusted to solve this problem. On the other hand, such an operation can be realized by limiting the lowest gear range. For example, when the vehicle travels at 70 km / h, the lowest gear range may be set to 5, and the gear range may not be lowered to 5 or lower. Specifically, when the vehicle travels at a speed of 100 km / h at six speeds with a speed limit speed of 70 km / h, the final speed change stage can be adjusted to five speeds instead of three speed limits. Such an operation can be used to prevent an excessive rise of the vehicle engine RPM.

On the other hand, the above-described embodiment is merely an example of controlling the speed change stage of the vehicle on the basis of the running speed of the vehicle and the limit speed of the intermittent section, and is an operation for controlling the speed of the vehicle on the basis of the difference between the running speed and the limit speed Applied is not limited.

6 is a view for showing an operation when the vehicle is positioned on an inclined plane according to an embodiment.

Referring to FIG. 6, the vehicle may be decelerated only when the hysteresis condition for the vehicle speed is satisfied, in order to prevent the operation state of reducing the vehicle speed by the vehicle speed from being repeated when the vehicle is located at the slope

For example, if the vehicle travels at a speed limit of 100 km / h on a -3% downhill road, deceleration may be deactivated only if the current vehicle speed is less than 95 km / h. In this case, the vehicle can also activate the deceleration when traveling at 105 km / h or more. On the other hand, when the inclination is higher, the width of the vehicle speed can be further increased.

For example, if the vehicle is traveling at a speed limit of 100 kph on a -5% downhill road, deceleration may be deactivated only if the vehicle speed is below 93 kph. In this case, the vehicle can also activate the deceleration when traveling at more than 107 km / h.

That is, the vehicle can acquire the terrain information of the terrain on which the vehicle is traveling through the communication unit 800, and determine the inclination of the interrupted section based on the terrain information. Further, the allowable speed of the vehicle can be determined based on the inclination of the intermittent section. That is, the higher the slope of the terrain located in the vehicle, the greater the hysteresis of the deceleration control of the vehicle, thereby reducing the variation of the deceleration control.

7 is a flowchart according to an embodiment.

Referring to FIG. 7, the vehicle may receive position information of the overspeed camera (1001). The vehicle can determine whether the current vehicle is traveling in the intermittent interval based on the received position information of the overspeed camera (1002). If it is determined that the vehicle is traveling in the intermittent section, it can be determined whether the traveling speed of the vehicle exceeds the limit speed of the intermittent section (1003). When the running speed of the vehicle exceeds the limit speed, the vehicle can be controlled to decelerate (1004).

Meanwhile, the disclosed embodiments may be embodied in the form of a recording medium storing instructions executable by a computer. The instructions may be stored in the form of program code and, when executed by a processor, may generate a program module to perform the operations of the disclosed embodiments. The recording medium may be embodied as a computer-readable recording medium.

The computer-readable recording medium includes all kinds of recording media in which instructions that can be decoded by a computer are stored. For example, it may be a ROM (Read Only Memory), a RAM (Random Access Memory), a magnetic tape, a magnetic disk, a flash memory, an optical data storage device, or the like.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or essential characteristics thereof. It will be appreciated that the present invention may be practiced. The disclosed embodiments are illustrative and should not be construed as limiting.

1: vehicle
500:
600:
700:
800:
900: Pedal input section

Claims (16)

A sensor unit for acquiring the speed of the vehicle;
A driving unit for adjusting a speed change stage of the vehicle;
A communication unit for receiving the terrain information including the information of at least one overspeed camera and the position information of the vehicle; And
Determining an intermittent interval of the at least one overspeed camera using information of the at least one overspeed camera,
And a control unit for controlling the driving unit to decelerate the vehicle when the vehicle approaches the intermittent section.
The method according to claim 1,
Wherein,
Determining a predetermined limit speed corresponding to the at least one overspeed camera intermittent interval,
And starts the deceleration control when the speed of the vehicle exceeds the limit speed. 3. The method of claim 2,
Wherein,
And changes the speed change stage based on a difference between the speed of the vehicle and the predetermined limit speed.
The method according to claim 1,
Wherein,
And determines a maximum change range of the speed change stage of the vehicle based on the speed of the vehicle.
The method according to claim 1,
Wherein,
Determining an inclination of the intermittent section based on the terrain information,
And judges an allowable speed of the vehicle based on an inclination of the intermittent section.
The method according to claim 1,
Wherein,
When the speed of the vehicle exceeds the permissible speed,
And controls the driving unit to decelerate and control the vehicle.
The method according to claim 1,
And a pedal input unit receiving the braking input signal of the vehicle,
Wherein,
And stops the deceleration control when the user inputs the braking signal through the pedal input unit.
The method according to claim 1,
Wherein,
When the vehicle leaves the intermittent section,
And stops the deceleration control of the vehicle. Acquiring the speed of the vehicle,
Receiving topographical information including information of at least one overspeed camera and position information of the vehicle,
Determining an intermittent interval of the at least one overspeed camera using information of the at least one overspeed camera,
And controlling the driver to decelerate the vehicle when the vehicle approaches the intermittent section.
10. The method of claim 9,
To decelerate and control the vehicle,
Determining a predetermined limit speed corresponding to the at least one overspeed camera intermittent interval,
And when the speed of the vehicle exceeds the limit speed, starting the deceleration control.
11. The method of claim 10,
To decelerate and control the vehicle,
And changing the speed change stage based on a difference between the speed of the vehicle and the predetermined limit speed.
10. The method of claim 9,
To decelerate and control the vehicle,
And determining a maximum change range of the speed change stage of the vehicle based on the speed of the vehicle.
10. The method of claim 9,
To decelerate and control the vehicle,
Determining an inclination of the intermittent section based on the terrain information,
And determining an allowable speed of the vehicle based on the inclination of the intermittent section.
10. The method of claim 9,
To decelerate and control the vehicle,
And when the speed of the vehicle exceeds the permissible speed, decelerating control of the vehicle.
10. The method of claim 9,
Further comprising: receiving a braking input signal of the vehicle;
To decelerate and control the vehicle,
And when the user inputs the braking signal, the deceleration control is stopped.
10. The method of claim 9,
Wherein the deceleration control of the vehicle includes stopping deceleration control of the vehicle when the vehicle leaves the intermittent interval.

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