KR20090020257A - Automatic controlling system for maintaining safely the running range in the car and method thereof - Google Patents

Abstract

A system and a method for automatically controlling traveling safety distance of a vehicle are provided to increase the braking effect by automatically braking the vehicle, thereby reducing a braking distance of the vehicle, and to secure the traveling safety distance and prevent the risk of collision of the vehicle with other vehicle or obstacle in from of the vehicle by automatically controlling an accelerator pedal and a brake pedal. A system for automatically controlling traveling safety distance of a vehicle comprises: a sensing unit(100); an ECU(Electronic Control Unit)(200) including a calculation part(210), an RAM(Random Access Memory)(220) and an ROM(Read Only Memory)(230); and a speed reduction/braking control part including an accelerator control unit and a brake control unit. The sensing unit comprises: an outer sensing unit(110) including a front left sensor(111), a front right sensor(112), and a weather change sensor(113); and a traveling sensing unit(120) including a traveling speed sensor(121)an accelerator pedal sensor(122), a brake locking sensor(123), and a brake locking release sensor(124). The ECU additionally includes a handle rotation signal transmission part, a wiper signal transmission part, and a direction change signal transmission part.

Description

Automatic controlling system for maintaining safely the running range in the car and method

The present invention relates to a system for automatically controlling a safe driving distance of a vehicle and a method thereof, and more particularly, to an electronic control unit (ECU) automatically approaching a vehicle or an obstacle in front of a predetermined deceleration distance. The programmed control signal of the controller gives an operation command to the accelerator control unit installed on the accelerator pedal and the brake control unit installed on the brake pedal, and the accelerator control unit and the brake control unit operate sequentially according to the operation command to push the accelerator pedal in the reverse direction. Raise the vehicle's speed and then approach the predetermined braking distance by passing the deceleration distance. Then, the brake pedal is operated to brake the vehicle, causing the driver (especially the disabled driver) to be embarrassed or inexperienced. By malfunctioning the brake pedal The present invention relates to an automatic driving safety distance control system and a method for automatically controlling a driving safety distance of a vehicle so as to prevent various accidents occurring in advance.

In general, the braking device of a vehicle such as a foot brake braking of a general vehicle or a handicapped vehicle should be operated by the driver as a foot or a brake for braking the vehicle in a handicapped vehicle as necessary. It is used as a manual braking method.

In this manual braking process, if the driver (especially the driver with a physical disability) is embarrassed or the driver is in danger of malfunction due to inadequate driving, the other side of the vehicle closes to the front and rear of the air cylinder. The technology of braking automatic control device to prevent accidental accidents by automatically operating foot brake and clutch is disclosed in Korean Utility Model Application Publication No. 1090-405 (January 30, 1990). 1, hereinafter referred to as Document 1) has been disclosed in the vehicle collision prevention device.

 However, the vehicle collision avoidance device as described above does not have a means for selectively driving the driver according to the needs of the driver, there is an inconvenience that the car is stopped regardless of the driver's intention in a large number of nearby objects such as downtown, and also the vehicle Regardless of the speed of the car, the vehicle stops only when an object appears on the front and rear, so that the car stops differently from the driver's intention when driving slowly.

 In order to solve the inconvenience of the document 1, when there is an object in front of the vehicle by determining the distance of the front object and the speed of the vehicle comprehensively by operating the braking automatically to prevent accidents in advance, the linear motor Korean Patent No. 0142539 (April 01, 1998, hereinafter referred to as Document 2) is disclosed as an automatic brake control device for a vehicle capable of minimizing installation costs by driving a brake pedal using an electromagnet.

In the configuration of Document 2, when the driver selects whether the braking operation is to be performed automatically or manually, the selection switch SW converts it into an electrical signal and outputs it, and the distance of the front object. Outputs an optical signal to detect the light, detects the light signal reflected by the front object and converts it into an electrical signal and outputs the light emitting device and the light receiving device, and detects the current speed of the vehicle as an electrical signal The vehicle speed sensor output after the conversion and the selection switch are turned on, and it is determined whether the front object is closer than the reference value from the signal input from the light receiving element, and the vehicle speed sensor when the front object is closer than the reference value. From the signal input from the controller, it is determined whether the current vehicle speed is in the high speed state. And a controller outputting a drive signal to the drive, comprises a brake driving unit for operating a brake pedal in accordance with a drive signal inputted from the controller.

However, according to Reference 2, when an unexpected obstacle appears suddenly in front of the vehicle during the driving or rapid acceleration of the vehicle, the driver (especially the disabled driver) does not find it or suddenly appears ahead. If the vehicle is accelerated by stepping on the accelerator pedal instead of the braking action that prevents the braking system from operating the braking system due to an obstacle or embarrassment or inexperience of driving, it may cause a large crash or serious injury. Can be.

Furthermore, when the distance of the front obstacle calculated by the controller of the reference 2 is smaller than the reference value, the driving speed detection signal is read to determine whether the current traveling speed exceeds the reference value, and the current traveling speed exceeds the reference value. If the driver continues to press the accelerator pedal in this state, the braking command due to rapid acceleration may be lost and the vehicle may continue to run. There is a danger of causing the vehicle to run suddenly and cause an accident.

Accordingly, an object of the present invention is to solve the above-mentioned disadvantages and inconveniences, and when the vehicle approaches the vehicle or obstacle in front of a predetermined deceleration distance, the program of the electronic control unit (ECU) is automatically programmed. The control signal is given to the accelerator control unit installed on the accelerator pedal and the brake control unit installed on the brake pedal, and the accelerator control unit and the brake control unit operate sequentially according to the operation command, and the accelerator pedal is pushed in the opposite direction to the vehicle. When the vehicle approaches the predetermined braking distance after decelerating the speed again, the brake pedal is operated to brake the vehicle, causing the driver (especially the disabled driver) to be embarrassed or inexperienced due to the accelerator pedal and the brake pedal. Caused by malfunction A driving safety distance of a vehicle to avoid pre-pick to provide a safe driving distance automatic control system and method for automatically controlling a vehicle.

Sensing device 100 for sensing a vehicle or obstacle running in front; The calculator 210 is connected to the sensing device 100 and calculates and receives an electrical signal sensed by the sensing device 100, and a RAM 220 that temporarily stores various variable signals generated during operation. ), And an electronic control unit (ECU) configured to perform control commands according to a preset program, comprising ROM (230, Read only memory) in which information recorded by a program is permanently stored regardless of power supply. , 200); Accelerator control unit 310 and brake control unit 320 to automatically control the deceleration and braking of the vehicle by controlling the up and down operation of the accelerator pedal 400 and the brake pedal 500 by the electrical signal of the ECU 200. In the driving safety distance automatic control system of a vehicle consisting of a deceleration / braking control unit 300,

The sensing device 100 includes an external left sensor 111 that senses the front two-side signal and the weather change signal of the vehicle, the front right sensor 112, and the weather change sensor 113, respectively. Wow; A traveling speed sensor 121 for sensing a traveling speed of a vehicle, an accelerator pedal sensor 122 for sensing prior to a position change of the accelerator pedal 400 by the traveling speed sensor 121, and a brake pedal 500. The brake lock sensor 123 for locking the brake pedal during operation, and the brake lock release sensor 124 for releasing the brake pedal 500 locked by the brake lock sensor 123 when the accelerator pedal 400 operates. Including a traveling sensing device 120,

The ECU 200 operates the steering wheel rotation amount signal transmission unit 240 and the vehicle wiper switch to transmit the rotation amount signal of the steering wheel so as to operate the deceleration / braking control unit 300 according to the angle at which the vehicle steering wheel rotates. In order to operate the deceleration / braking control unit 300 according to the step, the wiper signal transmission unit 250 for transmitting a position signal for each step of the wiper operation, and the deceleration / braking control unit 300 according to the operation position of the direction change switch of the vehicle. It includes a direction change signal transmission unit 260 for transmitting a direction change switch operation position signal to operate.

In addition, the present invention provides a method for automatically controlling a vehicle safety distance by a vehicle driving safety distance control system,

Initializing all sensing signals in the sensing apparatus 100 when the main power of the vehicle is applied and the acceleration operation by the accelerator pedal 400 is started (S20);

Determining whether the deceleration / braking control unit 300 electrically connected to the sensing device 100 and the ECU 200 is switched on (S30);

When the deceleration / braking control unit 300 is switched on, the external sensing device 110 of the sensing device 100 senses a vehicle or an obstacle in front of the vehicle and a weather change outside the vehicle, respectively (S40);

Calculating (S50) the calculation unit 210 of the ECU 200 to calculate actual distances and weather changes of the sensed vehicle and the obstacle in the sensing step S40;

The actual distance between the obstacle and the obstacle is calculated by referring to a lookup table already stored in the ROM 230 for the actual distance between the vehicle and the obstacle, which is calculated in operation S50. Determining whether it is smaller than a reference distance value referenced in the lookup table (S60);

When the distance to the obstacle calculated in the reference distance value determining step S60 is smaller than the reference distance value of the lookup table, the accelerator control unit 310 rotates the brake plate 317 by the ECU 200. (S70) the brake plate (317) rotates to automatically move to an initial position before operating the accelerator pedal (400);

After the accelerator control unit 310 is operated, the brake control unit 320 is operated to operate the brake pedal 500 (S80).

The automatic driving safety distance control system and method thereof according to the present invention automatically program a control signal of an electronic control unit (ECU) installed on the accelerator pedal when the vehicle approaches an obstacle to a predetermined deceleration distance. The operation command is given to the brake control unit installed on the accelerator control unit and the brake pedal, and the accelerator control unit and the brake control unit are operated in sequence according to the operation command, and the accelerator pedal is pushed in the reverse direction by the force of the pneumatic cylinder to increase the speed of the vehicle. After deceleration, when the vehicle or obstacle approaches the predetermined braking distance through the deceleration distance, the brake pedal is actuated by the force of the pneumatic cylinder to brake the vehicle. And brake pedal malfunction The various accidents that occur can be prevented in advance and can automatically control the driving of the vehicle a safe distance. In other words, the automatic driving safety distance control system and the method of the vehicle according to the distance and the driving speed of the present invention is embarrassed or inexperienced when the driver or the obstacle ahead approaches the braking reference distance. It is a very useful invention that can increase the braking effect by reducing the braking distance of the vehicle until the driver detects an obstacle and starts braking action by automatically braking regardless of the acceleration or braking action.

According to the present invention, the accelerator control unit and the brake control unit are simultaneously operated according to the ECU's operation command at the moment of detecting an accident or a collision crisis occurring suddenly when the vehicle overtakes an obstacle or another vehicle, forcing the accelerator pedal to be lifted to force By braking the vehicle by activating the brake pedal while preventing the vehicle from being accelerated by the operation, it is possible to prevent the driver (especially the disabled driver) from malfunctioning the accelerator pedal and the brake pedal due to embarrassment or inexperienced driving. .

In addition, the vehicle in front or rapid acceleration can secure the driving safety distance with the front object by automatically controlling the accelerator pedal and the brake pedal according to the distance of the front object, the driving speed and the weather condition. Alternatively, the risk of collision with obstacles can be prevented in advance.

Hereinafter, with reference to the accompanying drawings a preferred embodiment in the automatic driving safety distance control system of the present invention will be described in detail.

As used herein, automatic control refers to the automatic operation of the accelerator pedal according to an electric signal transmitted from a predetermined control program in response to the approach distance of the vehicle located in the front, rear, or side of the vehicle or the change of weather (snow or rain) around the vehicle. It includes a series of processes in which the accelerator control unit and the brake control unit operate on deceleration or braking of the brake pedal.

In addition, in the present invention, the reverse direction of the accelerator pedal is a direction opposite to the direction in which the driver presses the accelerator pedal, and refers to an operation of forcibly pushing the accelerator pedal upward by rotating the brake plate of the accelerator control unit installed in the lower part of the accelerator pedal upward. The opposite direction is called forward.

1 is a block diagram showing an automatic driving safety distance control system of a vehicle according to the present invention, the automatic control system of the vehicle of the present invention is a sensing device for sensing a vehicle or obstacle traveling in front of the vehicle while driving forward or at a rapid acceleration ( 100); The calculator 210 is connected to the sensing device 100 and calculates and receives an electrical signal sensed by the sensing device 100, and a RAM 220 that temporarily stores various variable signals generated during operation. ) And an electronic control unit (ECU) configured to perform control commands according to a preset program, comprising ROM (Read Only Memory), which is stored permanently regardless of power supply. 200); Accelerator control unit 310 and brake control unit 320 to automatically control the deceleration and braking of the vehicle by controlling the up and down operation of the accelerator pedal 400 and the brake pedal 500 by the electrical signal of the ECU 200. It includes a deceleration / braking control unit 300 made.

In the automatic driving safety distance control system of the present invention, the sensing device 100, the electronic control unit (ECU, 200), and the deceleration / braking control unit 300 are switched on when the main power of the vehicle is applied. The switch is turned on and the automatic control system is activated.

In addition, the sensing device 100 may have a front or rear surface and a front surface of another vehicle which may occur when the vehicle is traveling, left turn or right turn, U turn or rapid acceleration as shown in detail in FIG. 2. It detects various surrounding environments such as the safe distance or the close distance to obstacles other than other vehicles within a certain distance, and the weather change condition of snow or rain affecting the driving of the vehicle.

The deceleration / braking control unit 300 is an accelerator control unit 310 for automatically controlling the deceleration of the vehicle by the rising or falling operation signal by the electrical signal of the ECU 200, and the accelerator control unit 310 and The brake control unit 320 operates independently and controls the braking of the vehicle by the up or down operation signal when the obstacle in front of the vehicle approaches a predetermined distance while driving or driving at a rapid acceleration by the operation of the accelerator pedal 400 of the vehicle. It includes.

In addition, the ECU 200 is electrically connected to the steering wheel rotation amount signal transmission unit 240 for transmitting a signal of the steering wheel rotation amount to operate the deceleration / braking control unit 300 according to the angle of rotation of the vehicle steering wheel The wiper signal transmitting unit 250 which transmits a wiper operation step position signal to operate the deceleration / braking control unit 300 according to the operation stage of the vehicle wiper switch, and may operate the deceleration / braking control unit when changing the direction of the vehicle. It includes a direction switching signal transmission unit 260 for transmitting a position signal of the direction switching lever.

In this case, the handle rotation amount signal transmission unit 240 transmits an angle signal corresponding to the rotation amount (angle) of the vehicle steering wheel to the ECU 200, the wiper signal transmission unit 250 is the handle rotation amount signal Separately from the transmitter 140, the ECU 200 transmits the position of the vehicle wiper switch to each operation stage, and the direction change signal transmitter 260 transmits the position signal of the direction change lever to operate when the vehicle changes direction. do.

In addition, the steering wheel rotation amount signal transmission unit 240 is a deceleration / braking control unit through the ECU 200 according to the rotation amount range of the steering wheel that the driver rotates when the driver turns left or right or during a U-turn while driving the vehicle. The amount of rotation signal corresponding to the accelerator control unit 310 and the brake control unit 320 of 300 is transmitted.

Specifically, the handle rotation amount signal transmission unit 240 includes a position sensor for sensing the position of the neutral and left turn, the right turn of the handle.

That is, the steering wheel rotation amount signal transmission unit 140 operates the deceleration / braking control unit 300 according to the rotation angle of the steering wheel when the driver switches the vehicle to the S-shaped course or one direction without operating the direction switching lever. It transmits a signal to the ECU 200 whether the steering wheel rotational amount signal transmission unit 240 does not transmit the steering wheel rotational amount signal when the steering wheel original position is in the neutral 0 degree angle position as the original center position of the steering wheel, the right direction When the handle rotates, the front right sensor 112 of the external sensing device 110 is turned on and the front left sensor 111 is turned off. When the handle is rotated to the left, the front left sensor 112 is turned on. 111 is turned ON and the front right sensor is turned OFF.

For example, when the vehicle rotates in one direction, the steering wheel rotation amount signal transmitter 240 independently of the front left sensor 111 and the front right sensor 112 of the external sensing device 110 installed on both front sides of the vehicle. To make it work.

 If there is an obstacle on the left side of the vehicle when the vehicle makes a left turn or a U-turn, the front left sensor 111 installed on the left side senses and causes the ECU 200 to operate the accelerator control unit 310 to decelerate the vehicle. The front right sensor 112 installed on the right side is switched off to sense an obstacle irrespective of the driving direction so that the vehicle is not unnecessarily braked. However, when an obstacle is very close to the left side of the vehicle, the accelerator control unit 310 and the brake control unit 320 are programmed to operate at the same time to prevent a collision accident so that the vehicle is braked.

And if the vehicle is to turn right, it is preferable to set the program to operate the front right sensor 112 installed on the right side of the vehicle as opposed to the case of the left turn.

Meanwhile, as shown in FIG. 1, the wiper signal transmitter 250 is electrically connected to the ECU 200, and when the vehicle driver operates the wiper according to a weather change in rain or snow, The stepwise command signal is transmitted to the ECU 200.

In addition, the deceleration / braking control unit 300 controls the accelerator control unit 310 to operate in preference to the brake control unit 320 within a predetermined distance (meter unit) between the obstacle and the vehicle.

In addition, the deceleration / braking control unit 300 operates the accelerator control unit 310 and the brake control unit 320 by an electric signal transmitted from a preset program of the ECU 200 to change the weather (snow or rain). Deceleration and braking are performed according to the reference values referenced in the predetermined lookup table so that the

In addition, the deceleration / braking control unit 300 is connected to the brake control unit 320 separately regardless of the accelerator control unit 310 operating according to a program set in advance in the ECU 200, the ECU ( It operates according to the program preset in (200).

Thus, in Fig. 1, the accelerator control unit 310 and the brake control unit 320 are independently connected to the ECU 200 and operate according to a preset program.

On the other hand, the accelerator control unit 310 of the deceleration / braking control unit 300 is (semi) permanently stored information (once) permanently stored in the ECU 200 so that the brake control unit 320 always has a priority. It is programmed to be impossible to delete or modify.

In addition, the brake control unit 320 may generate an acceleration signal by forcibly operating the driver's accelerator pedal 400 while the front left sensor 111 and the front right sensor 112 of the external sensing device 110 are operated. When forcibly delivered, the deceleration and braking may be simultaneously operated by the brake control unit 320 and the accelerator control unit 310 that switches to the ON state.

2 is a block diagram showing the sensing device and the ECU in detail in the automatic driving safety distance control system of the vehicle according to the present invention.

In the automatic control system according to the present invention, the sensing device 100 includes a front right sensor 111 and a front left sensor 112 that sense the front left and right signals and weather signals respectively input from an input terminal. An external sensing device 110 composed of 112; The driving speed sensor 121 which operates simultaneously with the external sensing device 110 to sense the traveling speed of the vehicle itself, and the accelerator pedal 400 in preference to the position change of the accelerator pedal 400 by the traveling speed sensor 121. Accelerator pedal sensor 122 for sensing the signal of the brake, the brake lock sensor 123 to lock the brake pedal when operating the brake pedal 500, and the brake pedal 500 locked by the brake lock sensor 123 It includes a driving sensing device 120 including a brake unlocking sensor 124 to release when the accelerator pedal 400 is operating.

In addition, the external sensing device 110 and the traveling sensing device 120 of the sensing device 100 are electrically connected to an ECU 200 that stores and calculates these various signals at an output terminal and provides a corresponding operation command. .

In addition, the external sensing device 110 is composed of a plurality of individual sensing elements, the plurality of sensing elements, respectively, such as the front and bumper of the vehicle It is installed in the vicinity, and is electrically connected to the ECU (200).

In addition, in the external sensing device 110 of the sensing device 100, the front left sensor 111 and the front right sensor 112 are used to detect the distance between other vehicles or obstacles located in front of the vehicle. The sensing signal is irradiated to receive a signal reflected from a vehicle or an obstacle to be detected.

In addition, the weather change sensor 113 of the external sensing device 110 is a weather change sensing that can be changed according to various surrounding conditions, such as the conditions of the external climate change such as when the front sensor 111 rain or snow. Receive the signal.

In addition, the driving speed sensor 121 of the driving sensing device 120 is applied to the main power to the vehicle according to the control signal of the ECU 200, that is, when the main power is turned on by starting the vehicle, the external sensing device ( The front left sensor 111 and the front right sensor 112 of the 110 are switched on.

In addition, the external sensing device 110 has a predetermined safety distance (about 100 m to 50 m within a vehicle or obstacle that the front left sensor 111 and the front right sensor 112 run in front of the vehicle according to the traveling speed). ) Is approached and detected by irradiating an optical signal, and the vehicle or obstacle sensed by the front left sensor 111 and the front right sensor 112 as approached within a limited distance, for example, within 20 meters of the front left sensor ( 111 and the front right sensor 112 continue to irradiate the optical signal.

On the other hand, if a vehicle or an obstacle driving in front of the driving vehicle is farther than the deceleration distance (for example, about 50m), the driver can freely drive.

The signal sensed by the front left sensor 111 and the front right sensor 112 of the external sensing device 110 is then calculated by the ECU 200, the front right sensor 112 and the front left sensor 112. Signal is calculated by a program referring to a look up table which is set in advance by the ECU 200.

Here, the look up table is an accelerator in the ROM 230 to control the accelerator control unit 310 and the brake control unit 320 of the deceleration / braking control unit 300 described in FIG. 1. The reference value of the condition under which the control unit 310 is operated is set in advance. That is, the lookup table sets a reference value of the control signal and the traveling speed signal applied to the accelerator control unit 310 to decelerate even when the vehicle travel speed is large, even at a normal distance from the vehicle or obstacle located ahead. In this case, the reference value applied to braking is set according to the signal of sunny weather, rainy season according to the weather condition signal of the weather change. For example, a vehicle that is driving or accelerating during the rainy season is more difficult to observe an object than in clear weather, and during a sudden braking, the vehicle slips and the distance between deceleration and braking becomes longer. Set the reference value of the signal for deceleration and braking. In this way, the brake control signal of the vehicle in driving or rapid acceleration is determined according to the distance detection signal with the front object, the driving speed signal, and the weather condition signal, and the calculation unit 210 is driven by the control signal. .

On the other hand, the ECU 200 decelerates when it is determined that the warning signal or a dangerous signal that the sensing signal calculated by the front left sensor 111 and the front right sensor 112 of the external sensing device 110 may collide. The vehicle is controlled by simultaneously operating the accelerator control unit 310 and the brake control unit 320 by transmitting an operation signal to the accelerator control unit 310 while transmitting a stop signal to the brake control unit 320 of the braking control unit 300. Activate it if possible.

In addition, the ECU 200 is a distance detection signal and a driving speed signal and a weather condition of the obstacle located in front of the weather change sensor 113 and the wiper signal transmitter 250 in response to the snow or rainy weather changes The distance can be determined according to the signal.

The wiper signal transmitter 250 transmits a stepwise operation command for the driver of the vehicle to operate the wiper. The wiper signal transmitting unit 250 is, for example, as shown in FIG. Similarly, the accelerator control unit 310 transmits an operation command so that the accelerator control unit 310 can step up in steps of 10, 30, and 50% in the direction of the arrow R1 in the direction R2.

In addition, in a rainy or snowy weather condition, the driver generally operates the wiper to secure a view in front of the vehicle. At this time, when the driver operates the switch of the wiper, the accelerator control unit 310 operates.

That is, when the accelerator control unit 310 is operated as described above, the brake plate 317 is operated 50% in the reverse direction of the accelerator pedal 400 to relate to the operation of the front left sensor 111 and the front right sensor 112. Without decelerating the traveling speed by 50% compared to the reference speed set in the lookup table of the vehicle, the braking plate 317 is operated to increase the speed of the traveling vehicle by force.

In particular, under sub-zero conditions where the road surface freezes, the braking distance of the vehicle becomes much longer than under normal weather conditions, so that a collision accident may occur due to sliding during sudden braking of the vehicle by the operation of the brake control unit 320. For example, when the temperature outside the vehicle is below zero by the weather change sensor 113, the accelerator control unit 310 operates even if the driver operates the wiper so that the vehicle is decelerated and the operation of the brake control unit 320 is stopped. By doing so, the vehicle can slow down at an appropriate speed, thereby promoting safe driving of the vehicle.

At this time, according to the driver's selection, the driver presses the accelerator pedal 400 and accelerates slowly while preventing the acceleration of the vehicle while the accelerator control unit 310 is operated, or if the driver presses the brake pedal 500 to brake the vehicle. Decide

On the other hand, the ECU 200 receives the electric signal of the sensing device 100 and transmits the light signal and the driving signal of the front left and right of the vehicle to operate with priority over the accelerator pedal 400 and the brake pedal 500. A calculation unit 220 for calculating, a random access memory (RAM) for temporarily storing various variable signals generated during operation, and a ROM 260 in which information recorded by a program is stored permanently regardless of power supply. , Read only memory).

In addition, the calculation unit 220 is connected to the output terminal of the sensing device 100 to perform a control command by receiving the electrical signal of the sensing device 100, when the vehicle or obstacle approaches within the reference distance, within the reference While the front left sensor 111 and the front right sensor 121 sense a vehicle or an obstacle, the traveling speed sensor 121 of the traveling sensing device 120 is also sensed at the same time than the change of the accelerator pedal 400 of the vehicle driver. Calculate forward light and travel signals to operate with priority. The calculator 220 determines that there is an obstacle within a predetermined distance when the front left sensor 111 and the front right sensor 112 detect that there is an object within a predetermined distance. Is transmitted to the deceleration / braking control unit 300.

In addition, a random access memory (RAM) 220 of the ECU 200 may be electrically connected to the calculator 210 and may generate various signals generated during operation, that is, a sensing device 100 and a handle rotation amount signal transmission unit ( 240, the variable signal of the wiper signal transmitter 260 and the direction telephone signal transmitter 260 is stored.

 In addition, the read only memory (ROM) of the ECU 200 is electrically connected to the calculator 210 and the random access memory (RAM) 240, and the data stored therein is temporarily stored even when no electricity is supplied. It is a memory device that can not be deleted or modified without losing data. In addition to the liquid crystal display device selectively installed in the vehicle, the ROM 230 stores data necessary for voice guidance of a person as an electric signal.

In other words, when it is determined that the warning signal or the danger signal that the sensing signal calculated by the calculation unit 210 of the ECU 200 is a collision possibility, the ECU 200 is a brake control unit of the deceleration / braking control unit 300 ( While transmitting the stop signal to 320, an alarm signal may be transmitted to the liquid crystal display and the vehicle driver may recognize the alarm signal. The alarm signal outputs voice data stored in advance in the ROM 230 of the ECU 200.

3 and 4 are cross-sectional views illustrating an example in which an accelerator pedal is operated in a driving safety distance automatic control system for a vehicle according to an exemplary embodiment of the present invention. Here, description will be given with a focus on a relationship in which the accelerator control unit 310 actually operates.

3 is a cross-sectional view illustrating an example in which the accelerator pedal 400 is operated before the accelerator control unit 310 is lifted up, and FIG. 4 is an accelerator pedal (which is caused by the accelerator control unit 310 being lifted up and down). It is sectional drawing which shows the example which 400) raises.

The accelerator control unit 310 by the ECU 200 operating on the accelerator pedal 400 of the vehicle of the present invention may occur when the vehicle travels forward, drives left or right, or turns u-turn and rapidly accelerates. It has a mechanism that works when it is close to a dangerous distance on the front or rear or side of another vehicle, or when an obstacle other than another vehicle is within a safety distance.

3 and 4, the accelerator control unit 310 acting on the accelerator pedal 400 of the vehicle is driven by a first solenoid 311 which operates mechanically according to an electrical control signal from the ECU 200. It works.

Here, the accelerator pedal 400 may be operated up and down in the directions of arrows A1 to A2 by the accelerator control unit 310 when the vehicle is driven under the control of the ECU 200. Meanwhile, in the case of braking by the brake pedal 500, when the brake control unit 320 is activated to operate, the solenoid connected to the brake control unit 320 may be understood as described with reference to FIGS. 5A and 5B. It can be understood that 321 is controlled by becoming magnetic.

On the other hand, the first solenoid 311 of the accelerator control unit 310 operates by receiving a control command from the ECU 200 to control the rapid operation of the brake plate 317.

The accelerator control unit 310 supplies air to the first solenoid 311 and the first solenoid 311 operated according to the electrical signal of the ECU 200, and the air pressure rises in the set pressure range. The air compressor 312 is provided with a pressure sensor 312a for sensing an internal air pressure and transmitting an alarm signal to the ECU when the air pressure is lowered or lowered, and the high pressure air is supplied to the inside by the first solenoid 311. A first supply port 313a is provided, and a first discharge port 313b for discharging air therein is provided, and the air is supplied and discharged through the first supply port 313a and the first discharge port 313b. A first pneumatic cylinder 313 provided with a piston rod 313c reciprocated from side to side by a side, a fixed plate 314 for fixing the first pneumatic cylinder 313 to a lower portion of the accelerator pedal 400, and The support plate 315 protruding upward on one side of the fixing plate 314, and the first hole One side is hinged to the piston rod 313c of the cylinder 313, and the other side is rotatable up and down with the link 316 to which the pin 316a is coupled, so that the upper part supports the lower part of the accelerator pedal 400. The lower portion is hinged to the support plate 315, the lower end is coupled to the piston rod 313c of the first pneumatic cylinder 313, one side of the pin 316a coupled to the other side of the link 316 is hinged and transported The pin feed groove 317a is formed to include a brake plate 317 which stops the accelerator pedal 400 at a predetermined position and provides a braking force to the up and down operation. In this case, the first supply port 313a and the first discharge port 313b serve as the supply port 313a when the air flow port 313b exhausts air when the flow direction of the air pressure is reversed.

In addition, the air compressor 312 is the pressure is adjusted according to the air pressure of the air tank, the set pressure (Kg / ㎠) range, that is, 6 ~ 10 Kg / ㎠ pressure is always maintained, the inside of the air tank in the pressure range When the pressure drops below the pressure range, the air compressor 312 is switched off. On the contrary, when the air pressure of the air tank reaches the set pressure range, the air compressor 312 is turned on. The pressure (Kg / cm 2) may be determined by referring to a look-up table by the program of the ECU 200.

That is, the air compressor 312 as described above is a pressure sensor when the pressure of the air tank rises or falls below the pressure range in the set pressure range, that is, the internal air pressure of the air tank rises above 10Kg / ㎠ or falls below 5Kg / ㎠ 312a senses this and transmits an alarm signal to the ECU 200, and the ECU 200, which has received the alarm signal from the pressure sensor 312a, sounds an alarm to notify the driver of an abnormality of the air compressor 312. You can prevent accidents by letting them know.

In addition, the air pressure of the air compressor 312 as described above provides a pressure to maintain the up to a fixed state of the accelerator pedal 400 by the up and down operation with respect to the accelerator pedal 400.

The brake plate 317 automatically operates up and down by a control command of the ECU 200 according to the distance between the vehicle and the obstacle and the traveling speed signal. Therefore, when the operation signal of the ECU 200 is applied, the accelerator control unit 310 gives a braking force to the accelerator pedal 400 by controlling the up and down operation of the accelerator pedal 400 with the brake plate 317. .

At this time, since the signal of the ECU 200 forcibly raises the accelerator pedal 400, the braking force for the accelerator pedal 400 is stopped while the accelerator control unit 310 is kept in an elevated state.

The electrical signal line is electrically connected to the first solenoid 311 through the accelerator unit 310 of the deceleration / braking control unit 300 in the ECU 200. That is, the signal line is connected to the air compressor 312 separately from the brake control unit 320 via the first solenoid 311 which is opened and closed by the power command supplied from the ECU 200.

In addition, the accelerator control unit 310 is supplied with air through the air compressor 312 by the second solenoid 318 and the second solenoid 318 operated according to the electrical signal of the ECU 200. A second supply port 319a is provided, and a second discharge port 319b for discharging air therein is provided, and the air is supplied and discharged through the second supply port 319a and the second discharge port 319b. It includes a second pneumatic cylinder 319 is provided with a piston support rod (319c) for reciprocating up and down to support the lower portion of the accelerator pedal (400).

6A and 6B are cross-sectional views illustrating a relationship in which the brake control unit 320 of the deceleration / braking control unit actually operates in the automatic driving safety distance control system for a vehicle according to the exemplary embodiment of the present invention, respectively.

The mechanism of the brake control unit 320 acting on the brake pedal 500 as shown in FIGS. 6A and 6B operates on a principle similar to the mechanism of the accelerator control unit 310 by the ECU 200. It is configured to.

5A and 5B show that the pneumatic cylinder 323 of the present invention does not operate the brake control unit 320 when the vehicle driver applies pressure in the direction of arrow B1 to the brake pedal 500 while driving in the normal state. Piston rod 323c and the primary link 324 and the secondary link 325 is shown to operate.

6A and 6B operate the brake pedal unit 500 by operating the brake control unit 320 regardless of the driving intention of the vehicle driver according to a condition given through the external sensing device 110 of the sensing device 100 of the vehicle. It shows.

6A and 6B, the brake control unit 320 is operated so that the piston rod 323c of the pneumatic cylinder 323 is operated in the direction indicated by the arrow B2, and is operated in the opposite direction to B2, so that the first link 324 is operated. And the brake pedal 500 operates up and down while the second link 325 is operated.

The brake control unit 320 as described above supplies the air to the solenoid 321 and the solenoid 321 operated according to the electrical signal of the ECU 200, when the air pressure rises or falls in the set pressure range An air compressor 322 having a pressure sensor 322a for sensing an internal air pressure and transmitting an alarm signal to the ECU, and a supply port 323a through which high pressure air is supplied by the solenoid 321 is provided. Is provided, the discharge port 323b for discharging the air therein is provided, the piston rod 323c which is reciprocated from side to side by the air supplied and discharged through the supply port 323a and the discharge port 323b is provided It includes a pneumatic cylinder 323, the first link 324 and the second link 325 hinged between the piston rod 323c and the brake pedal 500 of the pneumatic cylinder 323.

The brake control unit 320 configured as described above transmits an operation signal through the brake control unit 320 of the deceleration / braking control unit 300 in the ECU 200 in the same manner as the operation of the accelerator control unit 310. The brake control unit 320 operates the solenoid 321.

In addition, the solenoid 321 operated as described above operates the air compressor 322 which compresses and supplies air at a constant pressure, and the air of the air compressor 322 operated as described above is supplied through the supply port 323a. Supply the pneumatic cylinder 323 to operate.

As described above, the solenoid 321 operates the pneumatic cylinder 323 by using the air compressor 322 to operate the piston rod 323c of the pneumatic cylinder 323 to operate the first link 324 and the second link ( 325 is to operate the brake pedal 500.

In this case, the supply port 323a and the discharge port 323b serve as the supply port 323a when the air pressure flow port 323b exhausts the air pressure in the reverse direction.

As described above, when the pressure of the air tank rises or falls below the pressure range in the pressure range set in the same manner as the air compressor 312 of the accelerator control unit 310, that is, the internal air pressure of the air tank is decreased. When the pressure rises above 10Kg / cm 2 or falls below 5Kg / cm 2, the pressure sensor 322a senses this to transmit an alarm signal to the ECU 200, and the ECU 200 which has received the alarm signal from the pressure sensor 322a. An alarm may be sounded to inform the driver of an abnormality of the air compressor 322 in advance to prevent an accident.

On the other hand, when the vehicle is running downhill or downhill while the vehicle is running down the brake pedal 500, the brake lock sensor 123 of the driving sensing device 120 for sensing the position of the brake pedal 500 is The brake lock sensor 123 transmits a signal to the ECU 200 to transmit a signal to the solenoid 321 of the brake control unit 320 so that the brake pedal 500 is locked, that is, the driver presses it. The position of the brake pedal 500 is fixed.

As described above, when the brake pedal 500 is locked on the uphill road or the downhill road, the driver may stop the vehicle on the uphill road or the downhill road even when the driver does not step on the brake pedal 500.

When the driver steps on the accelerator pedal 400 to drive a vehicle that is stationary on an uphill road or a downhill road as described above, the brake lock release sensor 124 installed on the accelerator pedal 400 is operated to operate the signal to the ECU 200. And the ECU 200 transmits a signal to the solenoid 321 of the brake control unit 320 to unlock the brake pedal 500 and at the same time the vehicle is moved forward by the operation of the accelerator pedal 400. It is operated by.

As described above, by locking the brake pedal 500 by the operation of the brake pedal 500 on an uphill road or a downhill road, the vehicle remains stopped even when the driver does not continuously press the brake pedal 500, and the accelerator pedal ( As the vehicle 400 is operated, the vehicle is driven forward while the brake pedal 500 is unlocked, thereby preventing the vehicle from being pushed backward.

7 is a cross-sectional view illustrating a state in which an accelerator control unit operates according to an operation signal of a wiper signal transmission unit according to a weather change in a vehicle driving safety distance automatic control system according to the present invention. When the driver operates the wiper lever, the wiper signal transmitting unit transmits a signal to the ECU, and the ECU 200 operates the second solenoid 318 of the accelerator control unit 310.

When the second solenoid 318 of the accelerator control unit 310 is operated as described above, the compressed air of the air compressor 312 is supplied through the second supply port 319a of the second pneumatic cylinder 319, and the second The outlet 319b is closed so that the piston support rod 319c is operated upward to move the brake plate 317 to the upper portion, that is, 50% of the position.

At this time, when the piston support rod 319c of the second pneumatic cylinder 319 moves the brake plate 317 to the upper side, one side of the link is hinged to the piston rod 313c of the first pneumatic cylinder 313 ( The pin 316a coupled to the other side of the 316 is transferred in the pin feed groove 317a formed in the lower portion of the brake plate 317, and only the brake plate 317 is rotated to the top and the first pneumatic cylinder 313 The piston rod 313c of the to maintain a stopped state.

As described above, the second pneumatic cylinder 319 of the accelerator control unit 310 is operated to decelerate the vehicle, and when the driver accelerates by stepping on the accelerator pedal 400 according to the driver's selection, the accelerator is accelerated. The second pneumatic cylinder 319 of the control unit 310 can be accelerated in a slow direction while preventing rapid acceleration of the vehicle in the operated state.

In particular, under sub-zero conditions where the road surface freezes, the braking distance of the vehicle becomes much longer than under normal weather conditions, so that a collision accident may occur due to sliding during sudden braking of the vehicle by the operation of the brake control unit 320. For example, when the temperature outside the vehicle is below zero due to the weather change sensor 113 of the external sensing device, the second pneumatic cylinder of the accelerator control unit 310 operates even if the driver operates the wiper, thereby decelerating the vehicle to control the brake control unit ( The operation of 320 is preferably programmed to be forcibly stopped to allow the vehicle to slow down at an appropriate speed while preventing sudden braking of the vehicle.

As described above, when the wiper lever is stopped according to the weather while the vehicle is operated while the accelerator control unit 310 operates the second pneumatic cylinder 319 by operating the wiper lever according to the weather change, the wiper signal transmitter In operation 250, a signal is transmitted to the ECU 200, and the ECU 200 transmits an operation signal to the second solenoid 318 to return the piston support rod 319c of the second pneumatic cylinder 319 to the accelerator. The operation of the pedal 400 is released.

As described above, in the vehicle safety distance automatic control system for a vehicle according to the embodiment of the present invention, the automatic brake device controls the deceleration of the vehicle by raising the brake plate 317 with respect to the accelerator pedal 400 by the accelerator control unit 310. Mechanism and the brake control unit 320 acts on the brake pedal 500 to control the braking of the vehicle acts to ensure a safe distance when driving the vehicle.

Hereinafter, the driving safety distance automatic system of the vehicle of the present invention Describe the control method.

8 is a flowchart illustrating an automatic control method for deceleration or braking of a vehicle according to an exemplary embodiment of the present invention.

As shown in FIG. 6, the control method by the vehicle's driving safety distance automatic control system according to an exemplary embodiment of the present invention initializes all sensing signals in the sensing device 100 when the main power of the vehicle is first applied (S20). .

Thereafter, the ECU 200 electrically connected to the sensing device 100 determines whether the deceleration / braking control unit 300 is switched on (S30).

In addition, the ECU 200 is the front left sensor 111 and the front right sensor 112 of the external sensing device 110 of the sensing device 100 when the deceleration / braking control unit 300 is switched on (ON). The weather change sensor 113 senses obstacles and weather changes in the vicinity of the vehicle itself (S40).

In the step S40 of sensing the obstacle and the weather change, when the vehicle driver operates the wiper when rain or snow comes to operate the wiper signal transmitter 250 to check the stepwise command signal according to a preset program of the wiper. For example, when there is a change, a stepwise signal corresponding thereto may be provided to the ECU 200 to drive the deceleration / braking control unit 300.

In addition, in the method of automatically controlling the safe driving distance of the vehicle, the calculating unit 220 of the ECU 200 calculates the distance between the vehicle sensed and the obstacle in the sensing step S40 (S50). That is, the calculation unit 220 of the ECU 200 reads the sensing signal of the obstacle input from the sensing device 100, and thus calculates the distance to the obstacle.

Next, the ECU 200 determines whether the calculated distance to the front object calculated exceeds the reference value. That is, it is determined whether the front object is closer than the reference value or farther than the reference value (S60).

As the obstacle approaches in the reference distance value determining step S60, the brake plate 317 of the accelerator control unit 310 operates. For example, when the reference distance value of the ECU 200 is automatically raised and operated within a range of about 50 to 20 m, on the contrary, when the reference distance value is out of the distance, the brake plate 317 returns to its original state. do.

In the reference distance value determination step (S60), when the vehicle is congested due to road conditions and is traveling at a low speed, as in the operation mode of the weather change sensor 113 by a command programmed in the ECU 200, the lookup of the vehicle The braking plate 317 is operated to increase the driving speed by 50% relative to the reference speed set in the lookup table so that the speed of the driving vehicle is forcibly reduced.

In the control method of the vehicle automatic control apparatus according to the embodiment of the present invention, when the accelerator pedal 400 is operated up and down in the state that the main power of the vehicle is applied, programmed in the ROM 260 inside the ECU 200. The ECU 200 refers to the lookup table for automatically controlling the braking of the vehicle, and executes a control command for the accelerator pedal 400 connected to the accelerator control unit 310 to control the vehicle according to an embodiment of the present invention. The operation of the automatic control unit begins.

Specifically, when the operation of the automatic control device starts as described above, the ECU 200 determines whether the deceleration / braking control unit 300 is turned on after initializing all variables stored in the internal memory (S20) (S30). ).

Meanwhile, the deceleration / braking control unit 300 may be configured as a switch for the driver to selectively turn on / off braking as needed. When the deceleration / braking control unit 300 is off, acceleration and deceleration to braking are automatically performed. Not controlled. That is, when the deceleration / braking control unit 300 is off, the ECU 200 determines whether the deceleration / braking control unit 300 is continuously switched on. However, when the deceleration / braking control unit 300 is switched on, the ECU 200 detects a sensing signal when an obstacle approaches the plurality of front left and right sensors 111 and 112 to detect a front object. The sensing device 100 senses it (S40) and converts it into an electrical signal and outputs it to the ECU 200.

In addition, when the front object is farther than the reference value in the step of determining the reference distance value (S60), the accelerator pedal 400 and the brake pedal 500 are normally operated by the driver, and the front object is closer than the reference value. That is, when the calculated distance to the obstacle is smaller than the reference distance value of the lookup table, the accelerator control unit 310 operates the brake plate 317 from the travel sensing device 120 by the ECU 200. And the brake plate 317 is moved upward to automatically move up and down to move the accelerator pedal 400 to the first position (S70).

In addition, the accelerator pedal 400 is automatically operated up and down to the first stop position, and the brake control unit 320 is operated at this time to operate the brake pedal 500 (S80).

In other words, when the accelerator pedal 400 is automatically moved up and down to the first stop position (S70), the ECU 200 commands the brake control unit 320 to operate the solenoid 321 to operate the pneumatic cylinder 323. ). Accordingly, the pneumatic cylinder 323 is operated to operate the piston rod 323c connected to the primary link 324 and the secondary link 325 while the brake pedal 500 operates to stop the vehicle.

therefore Dangerous to other vehicles that may occur when the vehicle equipped with the automatic driving safety distance control system of the present invention travels forward, turns left or turns right, or drives at a U turn and rapid acceleration When approaching a distance or within a safe distance from an obstacle other than another vehicle, the mechanical mechanism caused by the operation command of the ECU 200 may cause the accelerator control unit 310 to move upward with respect to the accelerator pedal 400. Accordingly, the vehicle is decelerated by stopping the downward movement of the accelerator pedal 400.

FIG. 8 is a view illustrating an acceleration control unit 310 of an automatic brake device for controlling an accelerator pedal in a vehicle driving safety distance automatic control method according to an embodiment of the present invention. A flowchart illustrating the method.

As illustrated in FIG. 8, when the accelerator pedal 400 is automatically moved up and down (S70), the accelerator unit 310 approaches the vehicle within a distance that is very close to an obstacle, for example, about 40 m. Prior to the braking signal of 320, the operation signal by the front sensing of the ECU 200 is received (S702).

When the accelerator control unit 310 receives the operation signal (S702), the first solenoid 311 of the accelerator control unit 310 is the air by the operation signal of the input terminal through the electrical signal line of the ECU (200) The first supply port 313a is opened in accordance with a constant air pressure supplied or exhausted from the compressor 312, and the outlet port 313b is closed by an operation signal of the output end. It is driven (S704).

Thereafter, the pneumatic cylinder 313 moves an internal piston rod 313c and a link 316 connected to the piston rod 313c (S706) and moves the wpe brake plate 317 connected to the link 316. Ascending, that is, the accelerator control unit 310 operates the brake plate 317 by the first solenoid 311 according to the operation signal calculated by the calculation unit 220 of the ECU 200 (S708).

Thereafter, the brake plate 317 is pushed up in the reverse direction of the stepping direction of the accelerator pedal 400 located on the upper side of the accelerator pedal 100. Control operation (S710).

Therefore, in the automatic control method for braking the vehicle according to the embodiment of the present invention The brake plate 40 moves the accelerator pedal 400 upward to reduce the speed of the vehicle.

FIG. 10 is a flowchart illustrating a method for operating a brake pedal after an accelerator pedal is operated in a vehicle driving safety distance automatic control method according to an exemplary embodiment of the present invention.

As described above, the method of operating the brake pedal in FIG. 10 is the same as the process of operating the accelerator pedal of FIG. 9, and thus a detailed process thereof will be omitted.

That is, in the method of operating the brake pedal of the automatic brake of the vehicle, when the accelerator pedal 400 is operated, the braking force is applied to the acceleration of the accelerator pedal 400 to brake up and down operation (S710, FIG. 4).

Thereafter, as shown in FIG. 6B, the ECU is irrelevant to the driving intention of the vehicle driver according to the conditions given through the vehicle sensing device 100, the steering wheel rotation amount signal transmission unit 240, and the wiper signal transmission unit 250. The command 200 to the brake control unit 320 to operate the pneumatic cylinder 323 through the solenoid 321 (S802).

In addition, while the piston rod 323c of the pneumatic cylinder 323 is operated as described above (see FIG. 6B), the first link 324 and the second link 325 connected to the piston rod 323c are operated ( S704), the vehicle is stopped by controlling the vertical operation of the brake pedal 500 through the link.

On the other hand, when the vehicle is stopped by automatically operating the brake pedal 400, the accelerator pedal 400 and the brake pedal 500 are returned to their original position according to the command of the control signal of the ECU 200. The brake plate 40 for operating 400 and the piston rod 323c for operating the brake pedal 500 are returned to their original positions.

Eventually, the guide stopper 40 acting on the accelerator pedal 400 of the vehicle of the present invention moves upwards, and accordingly, the mechanical mechanism of controlling the speed of the vehicle by pushing the accelerator pedal 400 is driven by the vehicle traveling forward, Turn left or turn right Alternatively, when driving at U-turns and rapid accelerations, other vehicles or other obstacles operate before approaching the safety distance to prevent collision with the obstacles.

As described above, in the embodiment of the present invention by determining the distance of the front object and the speed of the vehicle comprehensively, it is possible to prevent accidents in advance by automatically controlling the deceleration and braking of the vehicle.

On the other hand, the automatic driving safety distance control system and method of the vehicle according to a preferred embodiment of the present invention can be freely modified, used, without departing from the scope of the present invention by those skilled in the art And application.

1 is a block diagram of a vehicle driving safety distance automatic control system according to the present invention

2 is a detailed configuration diagram of a sensing device and an electronic control unit of a vehicle driving safety distance automatic control system according to the present invention;

3 is a cross-sectional view showing an example in which the accelerator pedal operates before the accelerator control unit of the deceleration / braking control unit illustrated in FIG. 1 operates.

4 is a cross-sectional view illustrating an example in which an accelerator pedal is raised by operating an accelerator control unit of the deceleration / braking control unit illustrated in FIG. 1.

5A and 5B are cross-sectional views illustrating a state in which a brake pedal is operated before the brake control unit of the deceleration / braking control unit operates in the automatic driving safety distance control system for a vehicle according to the present invention.

6A and 6B are cross-sectional views illustrating a state in which a brake control unit of a deceleration / braking control unit operates in an automatic driving safety distance control system for a vehicle according to the present invention.

7 is a cross-sectional view showing an operation state of the accelerator control unit according to the wiper signal transmission unit according to the weather change in the automatic driving safety distance control system of the vehicle according to the present invention.

8 is an operation flowchart of an automatic control method for driving safety distance braking of a vehicle according to the present invention.

9 is a flowchart illustrating a process of operating an accelerator control unit for controlling an accelerator pedal in a vehicle driving safety distance automatic control method according to the present invention.

10 is a flowchart illustrating a process of operating a brake control unit for controlling a brake pedal after the accelerator pedal is operated in the method for automatically controlling a driving safety distance of a vehicle according to the present invention.

* Explanation of symbols for main parts of the drawings

100: sensing device

110: external sensing device

111: front left sensor 112: front right sensor

113: weather change sensor

120: driving sensing device

121: driving speed sensor 122: accelerator pedal sensor

123: brake lock sensor 124: brake lock sensor

200: electronic control unit (ECU)

210: calculator 220: RAM

230: ROM 240: Handle rotation amount signal transmission unit

250: wiper signal transmission unit 260: direction switching signal transmission unit

300: deceleration / braking control unit

310: accelerator control unit

311: first solenoid

312: air compressor 312a: pressure sensor

313: first pneumatic cylinder 313a: first supply port

313b: first outlet 313c: piston rod

314: fixed plate 315: support plate

316: link 316a: pin

317: braking plate 317a: pin feed groove

318: second solenoid 319: second pneumatic cylinder

319a: second supply port 319b: second outlet

319c: Piston Support Rod

320: brake control unit

321: solenoid

322: air compressor 322a: pressure sensor

323: pneumatic cylinder 323a: supply port

323b: outlet 323c: piston rod

324: first link 325: second link

400: accelerator pedal

500: Brake Pedal

Claims (7)

Sensing device 100 for sensing a vehicle or obstacle running in front; The calculator 210 is connected to the sensing device 100 and calculates and receives an electrical signal sensed by the sensing device 100, and a RAM 220 that temporarily stores various variable signals generated during operation. ) And an electronic control unit (ECU) configured to perform control commands according to a preset program, comprising ROM (Read Only Memory), which is stored permanently regardless of power supply. 200); Accelerator control unit 310 and brake control unit 320 to automatically control the deceleration and braking of the vehicle by controlling the up and down operation of the accelerator pedal 400 and the brake pedal 500 by the electrical signal of the ECU 200. In the driving safety distance automatic control system of a vehicle consisting of a deceleration / braking control unit 300, The sensing device 100 includes an external left sensor 111 that senses the front two-side signal and the weather change signal of the vehicle, the front right sensor 112, and the weather change sensor 113, respectively. Wow; A traveling speed sensor 121 for sensing a traveling speed of a vehicle, an accelerator pedal sensor 122 for sensing prior to a position change of the accelerator pedal 400 by the traveling speed sensor 121, and a brake pedal 500. The brake lock sensor 123 for locking the brake pedal during operation, and the brake lock release sensor 124 for releasing the brake pedal 500 locked by the brake lock sensor 123 when the accelerator pedal 400 operates. Including a traveling sensing device 120, The ECU 200 may include a steering wheel rotation amount signal transmission unit 240 for transmitting a rotation amount signal of the steering wheel so as to operate the deceleration / braking control unit 300 according to the rotation angle of the vehicle steering wheel, and the wiper switch of the vehicle. The wiper signal transmission unit 250 which transmits a position signal for each step of the wiper operation so as to operate the deceleration / braking control unit 300 according to the operation stage, and the deceleration / braking control unit 300 according to the operation position of the direction change switch of the vehicle. Driving safety distance automatic control system of a vehicle comprising a direction change signal transmission unit for transmitting a direction change switch operation position signal so as to operate. The accelerator control unit 310 of the deceleration / braking control unit 300 supplies air to the first solenoid 311 and the first solenoid 311 according to an electrical signal of the ECU 200. An air compressor 312 having a pressure sensor 312a for supplying an alarm signal to the ECU by supplying and sensing an internal air pressure when the air pressure rises or falls within a set pressure range, and the first solenoid 311. A first supply port 313a through which the high-pressure air is supplied to the inside is provided, and a first discharge port 313b through which the air inside is discharged is provided. The first supply port 313a and the first discharge port are provided. A first pneumatic cylinder 313 having a piston rod 313c reciprocated from side to side by air supplied and discharged through 313b, and the first pneumatic cylinder 313 are lowered from the accelerator pedal 400. Fixing plate 314 fixed to the upper side to one side of the fixing plate 314 One side is hinged to the formed support plate 315 and the piston rod 313c of the first pneumatic cylinder 313, and the other side is rotatable up and down with a link 316 to which the pin 316a is coupled. The lower portion is hinged to the support plate 315 to support the lower portion of the accelerator pedal 400, the lower end of the link 316 hinged to one side of the piston rod 313c of the first pneumatic cylinder 313 The pin 316a is coupled to the other side is coupled to the pin feed groove (317a) is formed is characterized in that it comprises a brake plate 317 for stopping the accelerator pedal 400 at a certain position to give a braking force to the up and down operation Driving safety distance automatic control system of vehicle. The method according to claim 2, wherein the accelerator control unit 310 is a second solenoid 318 which is operated in accordance with the electrical signal of the ECU 200, and the second solenoid 318 is a second high-pressure air is supplied to the inside A second supply port 319a is provided, and a second discharge port 319b for discharging the air therein is provided, and the air is supplied and discharged through the second supply port 319a and the second discharge port 319b. A traveling safety distance automatic control system for a vehicle comprising a second pneumatic cylinder (319) having a piston support rod (319c) for reciprocating up and down to support a lower portion of the accelerator pedal (400). The brake control unit 320 of the deceleration / braking control unit 300 supplies the air to the solenoid 321 and the solenoid 321 operated according to an electrical signal of the ECU 200. When the pressure rises or falls in the set pressure range, the air compressor 322 is provided with a pressure sensor 322a for sensing an internal air pressure and transmitting an alarm signal to the ECU, and the high pressure air by the solenoid 321. Is provided with a supply port 323a supplied therein, and an outlet 323b for discharging the air therein is provided, and is provided to the left and right by air supplied and discharged through the supply port 323a and the discharge port 323b. Pneumatic cylinder 323 is provided with a reciprocating piston rod 323c, the first link 324 and the second hinge hinged between the piston rod 323c and the brake pedal 500 of the pneumatic cylinder 323 Of the vehicle, comprising a link 325. Row safe distance automatic control system. In the vehicle driving safety distance automatic control method by the vehicle's driving safety distance automatic control system, Initializing all sensing signals in the sensing apparatus 100 when the main power of the vehicle is applied and the acceleration operation by the accelerator pedal 400 is started (S20); Determining whether the deceleration / braking control unit 300 electrically connected to the sensing device 100 and the ECU 200 is switched on (S30); When the deceleration / braking control unit 300 is switched on, the external sensing device 110 of the sensing device 100 senses a vehicle or an obstacle in front of the vehicle and a weather change outside the vehicle, respectively (S40); Calculating (S50) the calculation unit 210 of the ECU 200 to calculate actual distances and weather changes of the sensed vehicle and the obstacle in the sensing step S40; The actual distance between the obstacle and the obstacle is calculated by referring to a lookup table already stored in the ROM 230 for the actual distance between the vehicle and the obstacle, which is calculated in operation S50. Determining whether it is smaller than a reference distance value referenced in the lookup table (S60); When the distance to the obstacle calculated in the reference distance value determining step S60 is smaller than the reference distance value of the lookup table, the accelerator control unit 310 rotates the brake plate 317 by the ECU 200. (S70) the brake plate (317) rotates to automatically move to an initial position before operating the accelerator pedal (400); And driving the brake pedal 500 by operating the brake control unit 320 after the accelerator control unit 310 is operated (S80). The method of claim 5, wherein the step of automatically moving to the initial position before the accelerator pedal 400 (S70), When the vehicle approaches a distance close to an obstacle, the operation signal of the accelerator control unit 310 takes precedence over the braking signal of the brake control unit 320 by the ECU 200 to give an operation signal by front sensing of the ECU 200. Receiving step S702; When the accelerator control unit 310 receives the operation signal (S702), the first solenoid 311 drives the first pneumatic cylinder 313 by opening the first supply port 313a and closing the discharge port 313b. Step S704; Thereafter, the first pneumatic cylinder 313 moves a link 316 hinged to one side of the piston rod 313c and the piston rod 313c therein (S706); Rotating the brake plate 317 hinged to the link 316 to an upper portion (S708); And, The brake plate (317) supports a lower portion of the accelerator pedal (400) to brake the up and down operation of the accelerator pedal 400 (S710), characterized in that the vehicle driving safety distance automatic control method. The method of claim 5, wherein the step (S80) of operating the brake pedal 500, the ECU 200 commands the brake control unit 320 to operate the solenoid 321, the solenoid is the supply port 323a Operating the pneumatic cylinder 323 by opening and closing the outlet 323b (S802), When the pneumatic cylinder 323 is operated, the internal piston rod 323c is operated, and the first link 324 and the second hinge hinged between the brake pedal 500 and the piston rod 323c of the pneumatic cylinder 323. Controlling the driving safety distance of the vehicle, characterized in that it comprises a step (S804) of operating the link (325) to control the vertical operation of the brake pedal (500).

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