KR101113527B1 - Method and Apparatus for Improving Braking Power - Google Patents

Abstract

The present invention relates to a method and an apparatus for improving braking force.

According to the present invention, an information collection unit for receiving and transmitting the own vehicle position information of the own vehicle calculated using the GPS module; A wireless communication unit configured to receive and transmit the surrounding vehicle location information from the surrounding vehicle or the surrounding base station; Calculate road information and direction information on which the host vehicle is located on the mounted map program using the received host vehicle position information, and calculate front vehicle information using a plurality of surrounding vehicle position information received from the wireless communication unit. A determination controller configured to calculate time to crash (TTC), which is a time at which the host vehicle and the front vehicle meet at an intersection, and to transmit a braking stimulus signal according to risk level information according to the estimated collision time information; And a braking unit configured to control a motor to secure a predetermined hydraulic pressure when the braking stimulus signal is received, and to set a response to braking quickly by lowering a threshold value of a control voltage transmitted to a brake assist system (BAS). It provides a device for improving the braking force, characterized in that.

Braking, braking force, nearby vehicles, nearby vehicles, road information, direction of travel

Description

Method and Apparatus for Improving Braking Power {Method and Apparatus for Improving Braking Power}

The present invention relates to a method and an apparatus for improving braking force. In more detail, it is possible to grasp the surrounding vehicle in the vicinity of the vehicle by wireless communication between the vehicles through a vehicle-to-vehicle or a neighboring base station on the roadside, and calculate the position information and the driving information of the vehicle using various sensors provided in the vehicle. It exchanges location information and driving information by wireless communication with vehicles located in the vicinity of the vehicle, and enhances the response characteristics of the braking device in case of an accident occurrence or collision is expected between the own vehicle and surrounding vehicles. The present invention relates to a method and apparatus for improving a braking force that can provide a high braking force.

In general, a brake device of a vehicle is a device that is used to decelerate or stop a vehicle while driving, and to maintain a parking state. In general, a braking device uses a friction force to convert the kinetic energy of the vehicle into thermal energy and dissipate it into the air. Perform.

The brake device of the vehicle is divided into a main brake used for decelerating and stopping the vehicle while driving and a parking brake for keeping the vehicle parked. According to the mechanism to transmit to the mechanical, hydraulic and pneumatic, the dual hydraulic brakes are most widely used because of the advantage that the braking force is transmitted evenly to all the wheels, so that the friction loss is low and the operating force can be reduced. .

Hydraulic brakes are direct type that directly delivers the pedaling force generated when the driver turns the pedal on to each wheel, and dual type brake system that transfers the pedaling force to each wheel using negative pressure or air pressure by vacuum. The device can exert a large braking force with a relatively small force, and its adoption has become commonplace in recent years.

However, the conventional braking device has a disadvantage in that a high braking force cannot be provided when there is a user's manipulation by increasing a response characteristic according to a situation in which an accident occurrence element is detected or a collision is expected while the vehicle is driving.

In order to solve the above problems, the present invention, by using a vehicle-to-vehicle or a nearby base station of the roadside to identify the surrounding vehicle in the vicinity of the vehicle by wireless communication between the vehicle, using the various sensors provided in the vehicle location information and Calculate driving information, exchange location information and driving information by wireless communication with vehicles located near your vehicle, and respond to braking devices in case an accident occurs or a collision is expected between your vehicle and surrounding vehicles. The purpose of the present invention is to provide a method and apparatus for improving the braking force that can provide a high braking force when there is a user's manipulation (braking).

In order to achieve the above object, the present invention, an information collection unit for receiving and transmitting the own vehicle position information of the own vehicle calculated using the GPS module; A wireless communication unit configured to receive and transmit the surrounding vehicle location information from the surrounding vehicle or the surrounding base station; Calculate road information and direction information on which the host vehicle is located on the mounted map program using the received host vehicle position information, and calculate front vehicle information using a plurality of surrounding vehicle position information received from the wireless communication unit. A determination controller configured to calculate time to crash (TTC), which is a time at which the host vehicle and the front vehicle meet at an intersection, and to transmit a braking stimulus signal according to risk level information according to the estimated collision time information; And a braking unit configured to control a motor to secure a predetermined hydraulic pressure when the braking stimulus signal is received, and to set a response to braking quickly by lowering a threshold value of a control voltage transmitted to a brake assist system (BAS). It provides a device for improving the braking force, characterized in that.

In addition, according to another object of the present invention, the method comprising the steps of: (a) calculating the road information and the traveling direction information on which the host vehicle is located on the mounted map program using the received host vehicle position information; (b) calculating front vehicle information using a plurality of surrounding vehicle location information received from the surrounding vehicle or the neighbor base station; (c) calculating anticipated collision time information (TTC) which is a time at which the host vehicle and the front vehicle meet at an intersection; (d) transmitting a braking stimulus signal according to the danger level information according to the estimated collision time information; And (e) upon receiving the braking stimulus signal, controlling the motor to secure a predetermined hydraulic pressure, and setting a threshold value of a control voltage transmitted to a brake assist system (BAS) so that a response to braking occurs quickly. It provides a method for improving the braking force, characterized in that it comprises.

As described above, according to the present invention, a vehicle-to-vehicle or a neighboring base station of a noro side detects the surrounding vehicle in the vicinity of the vehicle by wireless communication between the vehicles, and uses the various sensors provided in the vehicle to locate and operate the vehicle. By calculating information, exchanging location information and driving information through wireless communication with vehicles located near the vehicle, and improving the response characteristics of the braking device in case an accident is detected or a collision is expected between the vehicle and the surrounding vehicle. If there is user's operation (braking), there is an effect to improve the braking force that can provide a high braking force.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 is a block diagram schematically illustrating an apparatus for improving a braking force according to an exemplary embodiment of the present invention.

The apparatus for improving braking force according to an exemplary embodiment of the present invention includes an information collecting unit 110, a wireless communication unit 120, a determination control unit 130, and a braking unit 140.

In the present invention, the device for improving the braking force is described as including the information collecting unit 110, the wireless communication unit 120, the determination control unit 130 and the braking unit 140, but this is the technical idea of the present invention It is merely an example to describe, and those skilled in the art to which the present invention pertains various modifications to the components included in the device for improving the braking force without departing from the essential characteristics of the present invention It will be applicable to the modification.

The information collecting unit 110 receives the own vehicle position information of the own vehicle calculated by using a GPS module (not shown) and transmits the received vehicle position information to the determination controller 130.

In addition, the information collecting unit 110, vehicle speed information, acceleration / deceleration information, lateral force information, ABS (Antilock Braking System) warning / control flag information, TCS (Traction Control System) warning / control flag information for the host vehicle from the sensor unit At least one of electronic control suspension (ESC) warning / control flag information, steering wheel angle information, steering wheel information, turn signal information, road surface flatness information, emergency light switch input information, start state information, and driver door opening / closing information. Generates the own vehicle driving information including the information and transmits it to the determination controller 130.

Here, the sensor unit may be at least one module of an ESC control unit, a TCS control unit, an ESC control unit, a steering control unit, a suspension control unit, and an immobilizer. However, in the present invention, the sensor unit is described as a sensor unit for convenience of description. Define it and explain it.

The wireless communication unit 120 receives the surrounding vehicle location information from the surrounding vehicle or the neighbor base station and transmits the received position information to the determination controller 130.

Here, the wireless communication unit 120 performs a direct communication (C2C) to a vehicle equipped with a module capable of performing wireless communication and a vehicle-to-vehicle, or indirectly through a neighboring base station near the road (C2I). The wireless communication standard may be a standard such as dedicated short-range communication (DSRC) or 802.11.p.

That is, the wireless communication unit 120 is a communication means capable of exchanging information (position, direction, speed, etc.) required for driving between vehicles through a vehicle equipped with a module capable of performing wireless communication or a neighboring base station on the roadside.

The determination control unit 130 according to an embodiment of the present invention calculates main road information and travel direction information on which the own vehicle is located on the mounted map program using the received own vehicle location information, and according to the progress direction information. Computes sub road information connected to the main road information, receives the plurality of surrounding vehicle location information located in the main road information and the sub road information from the wireless communication unit 120, and progresses the host vehicle among the plurality of surrounding vehicle location information. It calculates the information of the vehicle ahead of the direction, calculates the time to crash (TTC), which is the time when the own vehicle and the vehicle meet at the intersection, and calculates the risk level information by dividing the risk level according to the estimated collision time information. Generate dangerous vehicle information corresponding to the highest level of risk level information, and dangerous vehicle information exceeds preset criteria. In this case, a function of transmitting the braking stimulus signal to the braking unit 140 is performed.

The determination control unit 130 according to the embodiment of the present invention continuously calculates the estimated collision time information and continuously updates the risk level information.

The determination control unit 130 according to an embodiment of the present invention additionally receives the own vehicle driving information from the information collecting unit 110, and when there is an error in the own vehicle driving information, sets the risk level information to a high level.

Braking unit 140 is a braking means for braking by adjusting the force of the brake pad to press the disc during the pedal operation, using a small force of the pedal to increase the hydraulic pressure through the vacuum booster, using a motor of ABS or ESC Additionally generates or removes hydraulic pressure. At this time, the initial hydraulic pressure rising speed and the hydraulic pressure formed will have a great influence on the braking distance.

When the braking unit 140 receives the braking stimulus signal from the determination controller 130, the braking unit 140 controls a motor to secure a predetermined hydraulic pressure, and a threshold of a control voltage transmitted to a brake assist system (BAS). Lowers the value to set the response to braking quickly.

Here, the braking unit 140 may use a pre-fill to secure the hydraulic pressure of the motor.

In addition, pre-fill refers to a technology that increases the braking performance when the ESC control unit enters the actual control by generating a motor oil pressure by driving the motor when the movement of the vehicle reaches the control entry level.

When the brake unit 140 receives the brake stimulus release signal from the determination controller 130, the brake unit 140 performs a function of switching to the normal operation mode.

2 is a flowchart illustrating a method of operating an information collector to improve braking force according to an exemplary embodiment of the present invention.

The information collecting unit 110 receives the own vehicle location information calculated using the GPS module provided (S210).

The information collecting unit 110 checks the main road information on which the own vehicle is currently located by matching the calculated own vehicle location information with the mounted map program (S220).

Here, the main road information may be a link ID indicating a specific road in the map data.

The information collecting unit 110 may include vehicle speed information, acceleration / deceleration information, lateral force information, antilock braking system (ABS) warning / control flag information, transaction control system (TCS) warning / control flag information, and the like from the ESC, TCS and ABS controllers. ESC (Electronic Control Suspension) warning / control flag information is received (S230).

The information collecting unit 110 receives steering angle information of the steering wheel, user operating torque low and the direction indicator light information from the steering control unit (S240).

The information collecting unit 110 receives the flatness information of the road surface from the suspension control unit (S250).

The information collecting unit 110 receives emergency light switch input information (S260).

The information collecting unit 110 receives starting state information and driver's door opening / closing information from the vehicle anti-theft prevention unit (S270).

In FIG. 2, the information collecting unit 110 sequentially executes steps S210 to S270. However, this is merely illustrative of the technical idea of the present invention, and is commonly known in the art. Those having the same will be applicable to various modifications and variations to the information collecting unit 110 to execute the step S210 to step S270 in parallel without departing from the essential characteristics of the present invention.

The information collecting unit 110 may include vehicle speed information, acceleration / deceleration information, lateral force information, antilock braking system (ABS) warning / control flag information, transaction control system (TCS) warning / control flag information, and ESC Electronic Control Suspension) includes at least one of warning / control flag information, steering wheel angle information, user operating torque information, direction indicator information, road leveling information, emergency light switch input information, starting status information, and driver door opening / closing information. The vehicle generates driving information and transmits the same to the determination controller 130.

3 is a flowchart illustrating a method in which the determination controller according to an embodiment of the present invention operates to improve braking force.

The determination controller 130 calculates main road information and driving direction information in which the own vehicle is located on the mounted map program using the own vehicle position information received from the information collecting unit 110 (S310).

The determination controller 130 calculates sub road information connected to the main road information according to the progress direction information (S320).

The determination controller 130 receives a plurality of surrounding vehicle location information located in the main road information and the sub road information from the wireless communication unit 120 (S330).

The determination controller 130 calculates front vehicle information in front of the traveling direction of the host vehicle among the plurality of surrounding vehicle position information (S340).

The determination controller 130 calculates collision estimated time information that is a time at which the own vehicle and the front vehicle meet at the intersection (S350).

The determination controller 130 generates risk level information by dividing the risk level according to the collision estimated time information (S360).

The determination controller 130 extracts dangerous vehicle information corresponding to the highest level information from the dangerous level information (S370).

The determination controller 130 transmits a braking stimulus signal to the brake unit 140 when the dangerous vehicle information exceeds a preset criterion (S380).

4 is a flowchart illustrating a method of operating a brake unit to improve a providing force according to an exemplary embodiment of the present invention.

The braking unit 140 receives the braking stimulus signal from the determination control unit 130 and then controls the motor to secure a preset oil pressure (S410).

Here, the braking unit 140 may use a pre-fill to control the motor to secure a predetermined hydraulic pressure.

In addition, it is preferable that the predetermined hydraulic pressure is 2 to 4 bar information, which is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains are essential characteristics of the present invention. It will be possible to apply a variety of modification and modification of the preset hydraulic pressure in the range without departing from.

That is, the braking unit 140 increases the braking characteristics by stimulating the braking actuator.

In the conventional braking device, the prefill rotates the motor just before the control entry of the ESC with only the vehicle sensor information. However, in the device for improving the braking force of the present invention, the wireless communication unit C2C or C2I is used. If the risk situation is detected in advance, the prefill application time can be extended, thereby improving the overall braking characteristics of the vehicle.

The braking unit 140 sets a threshold value of the control voltage transmitted to the brake assist system (BAS) so that a response to the braking occurs quickly (S420).

Here, when the driver's input (force) is insufficient in the braking pedal operation process, the BAS rotates the motor in ABS or ESC to increase the pressure to the ABS control level.

That is, the BAS determines a control entry condition based on a pre-programmed control model and a threshold value. When the brake unit 140 receives a braking stimulus signal (detects a dangerous situation in advance) and lowers the threshold value accordingly, the braking force is applied. This improves the ability to cope with risk situations more reliably.

When the braking unit 140 receives the braking stimulus releasing signal from the determination controller 130, the braking unit 140 switches to the normal operation models (S430).

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

1 is a block diagram schematically showing an apparatus for improving braking force according to an embodiment of the present invention;

2 is a flowchart illustrating a method of operating an information collector to improve braking force according to an exemplary embodiment of the present invention;

3 is a flowchart illustrating a method in which the determination controller according to an embodiment of the present invention operates to improve braking force.

4 is a flowchart illustrating a method of operating a brake unit to improve a providing force according to an exemplary embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

110: information collecting unit 120: wireless communication unit

130: judgment control unit 140: braking unit

Claims (10)

delete An information collection unit which receives and transmits the own vehicle position information of the own vehicle calculated using a GPS module; A wireless communication unit configured to receive and transmit the surrounding vehicle location information from the surrounding vehicle or the surrounding base station; Calculate road information and direction information on which the host vehicle is located on the mounted map program using the received host vehicle position information, and calculate front vehicle information using a plurality of surrounding vehicle position information received from the wireless communication unit. A determination controller configured to calculate time to crash (TTC), which is a time at which the host vehicle and the front vehicle meet at an intersection, and to transmit a braking stimulus signal according to risk level information according to the estimated collision time information; And Receiving the braking stimulus signal, to control the motor to secure a predetermined hydraulic pressure, and lowering the threshold value of the control voltage transmitted to the BAS (Brake Assist System) includes a braking unit for setting the response to the braking to appear quickly, The determination control unit, Calculating main road information and direction information on which the host vehicle is located on the map program; calculating sub road information connected to the main road information according to the direction information; And receive the plurality of surrounding vehicle position information located in the road information and the sub road information. The method of claim 2, The determination control unit, The front vehicle information in front of the traveling direction of the host vehicle among the plurality of surrounding vehicle position information, and the collision estimated time information (TTC) which is a time at which the host vehicle and the front vehicle meet at an intersection using the front vehicle information; Apparatus for improving braking force, characterized by calculating Time to Crash). The method of claim 3, wherein The determination control unit, Generate risk level information by dividing the risk level according to the collision estimated time information, extract dangerous vehicle information corresponding to the highest level of the risk level information, and when the dangerous vehicle information exceeds a preset criterion Apparatus for improving braking force, characterized by transmitting a stimulus signal. An information collection unit which receives and transmits the own vehicle position information of the own vehicle calculated using a GPS module; A wireless communication unit configured to receive and transmit the surrounding vehicle location information from the surrounding vehicle or the surrounding base station; Calculate road information and direction information on which the host vehicle is located on the mounted map program using the received host vehicle position information, and calculate front vehicle information using a plurality of surrounding vehicle position information received from the wireless communication unit. A determination controller configured to calculate time to crash (TTC), which is a time at which the host vehicle and the front vehicle meet at an intersection, and to transmit a braking stimulus signal according to risk level information according to the estimated collision time information; And Receiving the braking stimulus signal, to control the motor to secure a predetermined hydraulic pressure, and lowering the threshold value of the control voltage transmitted to the BAS (Brake Assist System) includes a braking unit for setting the response to the braking to appear quickly, The determination control unit, And continuously calculating the anticipated collision time information to continuously update the risk level information. delete An information collection unit which receives and transmits the own vehicle position information of the own vehicle calculated using a GPS module; A wireless communication unit configured to receive and transmit the surrounding vehicle location information from the surrounding vehicle or the surrounding base station; Calculate road information and direction information on which the host vehicle is located on the mounted map program using the received host vehicle position information, and calculate front vehicle information using a plurality of surrounding vehicle position information received from the wireless communication unit. A determination controller configured to calculate time to crash (TTC), which is a time at which the host vehicle and the front vehicle meet at an intersection, and to transmit a braking stimulus signal according to risk level information according to the estimated collision time information; And Receiving the braking stimulus signal, to control the motor to secure a predetermined hydraulic pressure, and lowering the threshold value of the control voltage transmitted to the BAS (Brake Assist System) includes a braking unit for setting the response to the braking to appear quickly, The information collecting unit, Vehicle speed information, acceleration / deceleration information, side force information, ABS (Antilock Braking System) warning / control flag information, TCS (Traction Control System) warning / control flag information, ESC (Electronic Control Suspension) warning from the sensor unit Generates self-driving vehicle information including at least one of control flag information, steering wheel steering angle information, user operating torque information, direction indicator information, road surface flatness information, emergency light switch input information, starting state information and driver door opening / closing information Transfer to the determination controller, The determination control unit, And receiving the own vehicle driving information from the information collecting unit and setting the dangerous level information to be high when there is an error in the own vehicle driving information. (a) calculating road information and direction information on which the own vehicle is located on the mounted map program using the received own vehicle location information; (b) calculating front vehicle information using a plurality of surrounding vehicle location information received from the surrounding vehicle or the neighbor base station; (c) calculating anticipated collision time information (TTC) which is a time at which the host vehicle and the front vehicle meet at an intersection; (d) transmitting a braking stimulus signal according to the danger level information according to the estimated collision time information; And (e) controlling the motor to secure a preset hydraulic pressure upon receiving the braking stimulus signal, and setting a threshold value of a control voltage transmitted to a brake assist system (BAS) so that a response to braking occurs quickly. But In step (a), Calculating main road information and heading direction information in which the host vehicle is located, and calculating sub road information connected to the main road information according to the heading direction information; . (a) calculating road information and direction information on which the own vehicle is located on the mounted map program using the received own vehicle location information; (b) calculating front vehicle information using a plurality of surrounding vehicle location information received from the surrounding vehicle or the neighbor base station; (c) calculating anticipated collision time information (TTC) which is a time at which the host vehicle and the front vehicle meet at an intersection; (d) transmitting a braking stimulus signal according to the danger level information according to the estimated collision time information; And (e) controlling the motor to secure a preset hydraulic pressure upon receiving the braking stimulus signal, and setting a threshold value of a control voltage transmitted to a brake assist system (BAS) so that a response to braking occurs quickly. But In the step (d), the risk level information is continuously updated based on the continuously estimated collision time information. (a) calculating road information and direction information on which the own vehicle is located on the mounted map program using the received own vehicle location information; (b) calculating front vehicle information using a plurality of surrounding vehicle location information received from the surrounding vehicle or the neighbor base station; (c) calculating anticipated collision time information (TTC) which is a time at which the host vehicle and the front vehicle meet at an intersection; (d) transmitting a braking stimulus signal according to the danger level information according to the estimated collision time information; And (e) controlling the motor to secure a preset hydraulic pressure upon receiving the braking stimulus signal, and setting a threshold value of a control voltage transmitted to a brake assist system (BAS) so that a response to braking occurs quickly. But The step (d) And if the received own vehicle driving information has an error, setting the risk level information to a high level.

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